pengelasan fcaw sementara (unsada) by ridwan

8/17/2019 PENGELASAN FCAW SEMENTARA (Unsada) By Ridwan

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BALAI BESAR PENGEMBANGAN LATIHAN KERJA LUAR NEGERI

FUX COREFUX CORE ARC WELDINGARC WELDING((FCFCAW)AW)

BAB IBAB I


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PROSES PENGELASAN LASFCAW

WELDING DEPARTMENT


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APLIKASI PENGGUNAAN LASFCAW

• Penggunaan las FCAW misalna !iguna"an!alam #engelasan !i !unia In!us$%i un$u"#em&ua$an sua$u &a%ang a$au ala$'

WELDING DEPARTMENT


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KELEBIHAN ( KEKURANGAN LASFCAW

• KELEBIHAN LAS FCAW – Sanga$ e)sien !an #%*ses #enge%+aan ang

,e#a$ –

Da#a$ !iguna"an un$u" semua #*sisi#engelasan – Memili"i ang"a !e#*sisi (deposition rates)

ang le&i- $inggi !i&an!ing"an SMAW – Mem&u$u-"an "emam#uan *#e%a$*% ang

&ai" – Mem&u$u-"an se!i"i$ #em&e%si-an post-

weld

WELDING DEPARTMENT


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• KEKURANGAN LAS FCAW – Wire-feeder ang meme%lu"an #eng*n$%*lan

ang "*n$inu

–

Se.a"$u .a"$u !a#a$ $e%+a!i Burnback – Ca,a$ las #*%*si$i se%ing $e%+a!i a"i&a$

#engunaan "uali$as gas #elin!ung ang$i!a" &ai"'

–

Busu% ang $i!a" s$a&il/ a"i&a$ "e$%am#ilan*#e%a$*% ang "u%ang &ai"'

– Pa!a a.alna se$0u# #engelasan me%u#a"an#e%mulaan ang suli$'

WELDING DEPARTMENT


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PERALATAN LASPERALATAN LAS FCFCAWAW

BAB IIBAB II


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PERALATAN UTAMA LASFCAW

• Mesin Las FCAW

• Uni$ #eng*n$%*l "a.a$ ele"$%*!a 1wirefeeder 2

• Welding Gun

• Ka&el las !an "a&el "*n$%*l

•

Regula$*% gas #elin!ung• Pi#a "*n$a"

• Nozzel gas #elin!ung

WELDING DEPARTMENT


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PERALATAN BANTU LASFCAW

• Si"a$ &a+a

• Tang #anas 1Smith Tang2

•

Tang #em*$*ng "a.a$• Palu

WELDING DEPARTMENT


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MESIN LAS FCAW

• Sis$em #em&ang"i$ $enaga #a!a mesin FCAW #a!a#%insi#na a!ala- sama !engan mesin SMAW ang!i&agi !alam 3 g*l*ngan/ ai$u 4 – Mesin las a%us &*la" &ali" 1 lternating !urrent " ! Welding

#achine2 – Mesin las a%us sea%a- 1$irect !urrent"$! Welding #achine2

• Namun sesuai !engan $un$u$an #e"e%+aan !an +enis&a-an ang !i las ang "e&ana"an a!ala- +enis &a+a/ma"a se,a%a luas #%*ses #engelasan !engan FCAW

a!ala- mengguna"an mesin las DC'• Umumna mesin las a%us sea%a- 1DC2 men!a#a$"an

sum&e% $enaga lis$%i" !a%i $%a5* las 1 AC 2 ang"emu!ian !iu&a- men+a!i a%us sea%a- !engan 6*l$ageang "*ns$an 1constant-%oltage )&

WELDING DEPARTMENT


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MESIN LAS FCAW

• Rang"aian #e%leng"a#an mesin lasFCAW

WELDING DEPARTMENT


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MESIN LAS FCAW

• Jenis #emasangan "a&el las 1#*la%i$as 7#eng"u$u&an2 mesin las FCAW DC 4

– Peng"u$u&an langsung 1 DCSP 7 DCEN 2• Dengan #eng"u$u&an langsung &e%a%$i "u$u& #*si$i5182 mesin

las !i-u&ung"an !engan &en!a "e%+a !an "u$u& nega$i5 102!i-u&ung"an !engan "a&el ele"$%*!a' Dengan -u&unganse#e%$i ini #anas #engelasan ang $e%+a!i 97: &agian #anasmemanas"an ele"$%*!a se!ang"an 37: &agian memanas"an

&en!a "e%+a'

–

Peng"u$u&an $e%&ali" 1 DCRP 7 DCEP 2• Pa!a #eng"u$u&an $e%&ali"/ "u$u& nega$i5 102 mesin las

!i-u&ung"an !engan &en!a "e%+a/ !an "u$u& #*si$i5 182!i-u&ung"an !engan ele"$%*!a' Pa!a -u&ungan sema,am ini#anas #engelasan ang $e%+a!i 97: &agian #anas

memanas"an &en!a "e%+a !an 37: &agian memanas"an

ele"$%*!a' WELDING DEPARTMENT


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MESIN LAS FCAW

+ -- +

POLARITAS MESIN LAS DC

TANG LAS TANG LAS

KLEM LASKLEM LAS

POLARITAS LURUS (DCEN/DCSP/DC(-)) POLARITAS TERBALIK(DCEP/DCRP/DC(+))

WELDING DEPARTMENT


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WIRE FEEDER

• Wire 'eeder a!ala- ala$ #eng*n$%*l 7#engum#an "a.a$ ele"$%*!a'

WELDING DEPARTMENT


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WIRE FEEDER

• Fungsi Wire 'eeder 4

– Menem#a$"an %*l "a.a$ ele"$%*!a

– Menem#a$"an "a&el las 1$e%masu" welding gun

!an nozzle2 !an sis$em salu%an gas #elin!ung – Menga$u% #ema"aian "a.a$ ele"$%*!a

1se&agian $i#e mesin/ uni$ #eng*n$%*lna$e%#isa- !engan wire feeder unit 2

–Mem#e%mu!a- #%*ses 7 #enanganan#engelasan/ !imana wire feeder $e%se&u$!a#a$ !i#in!a-0#in!a- sesuai "e&u$u-an'

WELDING DEPARTMENT


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WIRE FEEDER

• Jenis Wire 'eeder 4

– Jenis !*%*ng

– Jenis $a%i"

– Jenis !*%*ng0$a%i"

WELDING DEPARTMENT


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WIRE FEEDER

• Jenis R*l Wire 'eeder &e%!asa%"an +umla- %*l4

– Sis$em 3 R*l

– Sis$em ; R*l

• Jenis R*l Wire 'eeder &e%!asa%"an&i!ang "*n$a" %*l4

– Jenis $%a#esium -alus – Jenis se$enga- ling"a%an -alus

– Jenis se$enga- ling"a%an "asa%

WELDING DEPARTMENT


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WELDING GUN

• Welding Gun Las

WELDING DEPARTMENT


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KABEL LAS ( KABELKONTROL

• Ka&el P%ime% 1rimar owercable2

– Ka&el ang meng-u&ung"an an$a%a sum&e% $enaga

!engan mesin las'

– Jumla- "a.a$ in$i #a!a "a&el #%ime% !isesuai"an

!engan +umla- #-asa mesin las !i$am&a- sa$u"a.a$ se&agai -u&ungan #en$ana-an !a%i mesin las'

• Ka&el Se"un!e% 7 Ka&el Las 1Welding !able2

– Ka&el0"a&el ang !i#a"ai un$u" "e#e%luan mengelas'

– Te%!i%i !a%i "a&el ang !i-u&ung"an !engan $ang las!an &en!a "e%+a se%$a "a&el0"a&el "*n$%*l'

WELDING DEPARTMENT


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REGULATOR GASPELINDUNG

• Fungsi 4

– un$u" menga$u% #ema"aian gas'

WELDING DEPARTMENT


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REGULATOR GASPELINDUNG

• Un$u" #ema"aian gas #elin!ung!alam .a"$u ang %ela$i5 lama/$e%u$ama gas CO3 !i#e%lu"an #emanas

1heater-%aporizer 2 ang !i#asangan$a%a silin!e% gas !an %egula$*%'

• Hal ini !i#e%lu"an aga% gas #elin!ung

$e%se&u$ $i!a" mem&e"u ang&e%a"i&a$ $e%gangguna ali%an gas'

WELDING DEPARTMENT


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PIPA KONTAK

• Pi#a #enga%a- ele"$%*!a &iasa +uga !ise&u$ #i#a"*n$a" 1contact tips2'

• Pi#a "*n$a" $e%&ua$ !a%i $em&aga/ !an &e%5ungsiun$u" mem&a.a a%us lis$%i" "e ele"$%*!a ang&e%ge%a" !an menga%a-"an ele"$%*!a $e%se&u$ "e!ae%a- "e%+a #engelasan'

WELDING DEPARTMENT


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NO


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SIKAT BAJA

• Fungsi 4

– Mem&e%si-"an -asil las

– Mem&e%si-"an &en!a "e%+a se&elum!ilas

WELDING DEPARTMENT


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TANG PANAS

• Fungsi 4

– Memegang &en!a "e%+a #anas

WELDING DEPARTMENT


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TANG PEMOTONG KAWAT

• Fungsi 4

– Mem*$*ng "a.a$ ele"$%*!a se&elummemulai #engelasan

WELDING DEPARTMENT


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PALU LAS

• Fungsi 4

– Mem&e%si-"an $e%a"

– Mem&e%si-"an s#a$$e%

WELDING DEPARTMENT


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MENGESET MESIN LASMENGESET MESIN LASDAN ELEKTRODA FCAWDAN ELEKTRODA FCAW

BAB IIIBAB III


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MENGESET MESIN LASFCAW

• Sa$u se$ #emasangan #e%leng"a#anFCAW

WELDING DEPARTMENT


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• Di!alam mesin las FCAW $i#e DC$e%!a#a$ !ua +enis #e%a$a a%us1 recti*er 2/ a"ni4

– Ti#e &e%#u$a% 1 rotating 2 ai$u gene%a$*%ang !i ge%a""an mesin 1 engine dri%engenerator 2

–

Ti#e s$a$is/ ai$u transformer recti*er!an in%erter

WELDING DEPARTMENT


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• Un$u" #e"e%+aan !i &eng"el le&i- su"a !isu"ai$i#e s$a$is ang se%ing mengguna"an sum&e%lis$%i" AC &e%$egangan 3:= > a$au ;?= >' Ti#eini memili"i "a%a"$e%is$i" ,e#a$ $angga#( +uick response 2/ le&i- $enang/ !an $i!a"meng-asil"an #*lusi asa#'

• Se!ang"an $i#e &e%#u$a% ( rotating 2

!i#e%lu"an !i l*"asi ang $i!a" memili"isum&e% $enaga lis$%i" !an !i !ae%a- $e%&u"a !imana 5a"$*% #*lusi asa# $i!a" $e%lalu!i%isau"an'

WELDING DEPARTMENT


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MEN@ETEL PERALATANFCAW

• Pene$elan Mesin Las FCAW

– Pa!a mesin las $i!a" &ana" !i#e%lu"an#ene$elan/ "e,uali -ana #ene$elan

#enggunaan +enis a%us #engelasan/ ai$uDCRP a$au DCSP a$au !isesuai"an !engan +enis7$un$u$an #e"e%+aan' Namun/ "-ususun$u" #enggunaan "a.a$ ele"$%*!a s*li!

1solid wire) &iasana mengguna"an#eng"u$u&an DCRP 1 welding gun!i-u&ung"an !engan "u$u& #*si$i5 mesin )&

WELDING DEPARTMENT


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• Pene$elan Wire 'eeder

– Menesuai"an u"u%an alu% %*!a !enganu"u%an "a.a$ ele"$%*!a' Be&e%a#a $i#e %*!a

-ana ,u"u# !engan mem&ali" #*sisi %*!asu#aa sesuai !engan u"u%an "a.a$ele"$%*!a/ $a#i #a!a #a!a $i#e ang ang lain"a!ang "ala -a%us menggan$i u"u%an %*!aang sesuai'

– Menga$u%7 mene$el $e"anan %*!a $e%-a!a#"a.a$ ele"$%*!a aga% "a.a$ !a#a$ $e%#u$a%se,a%a lan,a%'

WELDING DEPARTMENT


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• Pene$elan Wire 'eeder

WELDING DEPARTMENT


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• Pene$elan Welding Gun

– menesuai"an u"u%an contact tips!engan !iame$e% "a.a$ ele"$%*!a

– menesuai"an $i#e nozzle !engan"e&u$u-an #e"e%+aan&

WELDING DEPARTMENT


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KAWAT ELEKTRODA

• Jenis l*gam ang !a#a$ !i lasmengguna"an #%*ses FCAW an$a%alain 4

– Ba+a $egangan $inggi !an menenga-

– Ba+a #a!uan %en!a-

– Ba+a $a-an "a%a$

– Aluminium – Tem&aga

– Tem&aga #a!uan/ !ll

WELDING DEPARTMENT


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KAWAT ELEKTRODA

• Ben$u" "a.a$ ele"$%*!a se,a%aumum4

– Solid wire

•

un$u" mengelas "*ns$%u"si %ingansam#ai se!ang !an !i*#e%asi"an#a!a %uangan %ela$i5 $e%$u$u# 1indoor 2

– 'lu, cored wire

•

un$u" #engelasan "*ns$%u"si se!angsam#ai &e%a$ !an $em#a$#engelasanna memung"in"an le&i-$e%&u"a 1outdoor 2

WELDING DEPARTMENT


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KAWAT ELEKTRODA

• Fa"$*% u$ama ang mem#enga%u-i#emili-an +enis "a.a$ ele"$%*!aFCAW 4 – K*m#*sisi !a%i &a-an !asa%

– Si5a$0si5a$ me"ani" !a%i &a-an !asa%

– Gas #elin!ung ang !i#a"ai

–

S#esi)"asi !a%i #e"e%+aan – Ti#e !esain sam&ungan

WELDING DEPARTMENT


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KAWAT ELEKTRODA

• Kan!ungan "a.a$ ele"$%*!a FCAW 4

– Ele"$%*!a Fe%%* 1Fe2

– Pa!uan Sili"*n 1Si2

– Pa!uan Mangan 1Mn2

– Pa!uan Alumunium 1Al2/ Ti$anium 1Ti2/


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KAWAT ELEKTRODA

• Ele"$%*!a Fe%%* 1Fe2 – Pa!a umumna se$ia# ele"$%*!a 1,*n$*- 4

&a-an !asa% Fe2 memili"i unsu% #a!uan'

–

Fungsi u$ama #enam&a-an unsu% #a!uan #a!aele"$%*!ana a!ala- un$u" menga$u% !e*"si!asigenangan las 1weld puddle2 !an un$u"mem&an$u menen$u"an #%*#e%$i me"ani"na'

– De*"si!asi a!ala- "*m&inasi elemen !engan*"sigen !a%i genangan las meng-asil"an slag a$au 5*%masi "a,a 1glass formation2 #a!a#e%mu"aan'

WELDING DEPARTMENT


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KAWAT ELEKTRODA

• Pa!uan Sili"*n 1Si2 – Sili"*n a!ala- elemen !e*"si!asi ang #aling

se%ing !iguna"an un$u" #a!uan ele"$%*!a las

–

Umumna/ ele"$%*!a mengan!ung =/;=09/== sili"*n' Dalam +ang"auan #e%sen$ase ini/ sili"*nmenun+u"an "emam#uan !e*"si!asi ang &ai"'

– Mem#e%&esa% &ana"na sili"*n a"an

menai"an "e"ua$an las !engan se!i"i$#enu%unan "e$anggu-an' Te$a#i +i"a !ia$as 909/3 sili"*n/ l*gam las a"an sanga$ sensi$i5$e%-a!a# %e$a" 1crack)&

WELDING DEPARTMENT


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KAWAT ELEKTRODA

• Pa!uan Mangan 1Mn2 – Mangan +uga !iguna"an un$u" mening"a$"an

"e"ua$an !an !e*"si!asi l*gam las'

–

Ele"$%*!a mild-steel mengan!ung 9/==03/== mangan'

– Menai""an &ana"na mangan a"anmening"a$"an "e"ua$an !an a"an mengu%angi

sensi$i)$as "e%e$a"an "a%ena #anas !a%i l*gamlas'

WELDING DEPARTMENT


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KAWAT ELEKTRODA

• Pa!uan Alumunium 1 Al 2/ Ti$anium1 Ti 2/


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KAWAT ELEKTRODA

• Pa!uan Ka%&*n 1C2 !an lainna – Ka%&*n mem#enga%u-i s$%u"$u% !an #%*#e%$i me"ani"

l*gam las le&i- &esa% !i&an!ing"an !engan elemen#a!uan lainna' Un$u" "egunaan #engelasan &a+a

"a%&*n/ ele"$%*!a mengan!ung =/=0=/93 "a%&*n'Pe%sen$ase ini ,u"u# un$u" meng-asil"an "e"ua$anl*gam las ang !iingin"an $an#a mem#enga%u-i"e$anggu-an !an #*%*si$i'

– Ni"el/ "%*m !an m*l&!enum $e%"a!ang !i$am&a-"an

un$u" mening"a$"an #%*#e%$i me"ani" !an "e$a-anan"*%*si' Dalam +umla- "e,il/ me%e"a !a#a$ !iguna"an!alam ele"$%*!a &a+a "a%&*n un$u" mening"a$"an"e"ua$an !an "e$anggu-an !a%i l*gam !e#*si$.

WELDING DEPARTMENT


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JENIS ELEKTRODA FCAW

• Jenis0+enis ele"$%*!a un$u"#%*ses las FCAW 4

–

Ele"$%*!a &esi "a%&*n –Ele"$%*!a s$ainless s$eel

–Ele"$%*!a alumunium

WELDING DEPARTMENT


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STANDAR KODE WIRE FCAW

WELDING DEPARTMENT

KAWAT LAS BERPELINDUNG SENDIRI


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WELDING DEPARTMENT

KAWAT LAS BERPELINDUNG SENDIRI


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K: FCAW

• Gangguan "ese-a$an a$au"e,ela"aan !a#a$ !ia"i&a$"an *le-&e&e%a#a 5a"$*%/ a"ni 4

– *#e%a$*% 7 $e"nisi las 1welder 2

– mesin !an ala$0ala$ las

– ling"ungan "e%+a

WELDING DEPARTMENT


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K: FCAW

• Resi"* &e"e%+a !engan #%*ses lasFCAW se,a%a umum 4

– "e+u$an lis$%i" 1 electric shock 2

– sina% las

– !e&u !an asa# las

– lu"a &a"a%

– "e&a"a%an

WELDING DEPARTMENT


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RESIKO LAS FCAW

• Ke+u$an lis$%i" 1 electric shock 2

– Ke,ela"aan a"i&a$ "e+u$an lis$%i" !a#a$$e%+a!i se$ia# saa$/ &ai" i$u #a!a saa$

#emasangan #e%ala$an/ #ene$elan a$au#a!a saa$ #engelasan'

– Resi"* ang a"an $e%+a!i !a#a$ &e%u#alu"a &a"a%/ $e%+a$u-/ #ingsan se%$a !a#a$meninggal !unia'

WELDING DEPARTMENT


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RESIKO LAS FCAW

• Ke+u$an lis$%i" 1 electric shock 2

– Ji"a $e%+a!i "e,ela"aan a"i&a$ "e+u$anlis$%i"/ ma"a !a#a$ !ila"u"an lang"a-0

lang"a- &e%i"u$ 4• Ta%i" #en!e%i$a !engan &en!a "e%ing 1"a%e$/ #las$i"/

"au/ !an se+enisna2 #a!a &agian0&agian #a"aianang "e%ing'

• Pen*l*ng &e%!i%i #a!a &a-an ang $i!a" &e%si5a$

"*n!u"$*% 1 #a#an/ se#a$u "a%e$2• D*%*ngla- #en!e%i$a !engan ala$ ang su!a-

!ise!ia"an'

• Ba.ala- "e%uma- sa"i$ !engan sege%a'

WELDING DEPARTMENT


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RESIKO LAS FCAW

• Ke+u$an lis$%i" 1 electric shock 2 – Be%i"u$ u#aa men,ega- "e,ela"aan #a!a mesin FCAW 4

• Ka&el #%ime% -a%us $e%+amin !engan &ai"/ mem#unai is*lasi ang &ai"'

• Ka&el #%ime% usa-a"an se#en!e" mung"in'

• Hin!a%"an "a&el0"a&el las !a%i g*%esan/ l*n,a$an &unga a#i !an &en!a#anas'

• Pe%i"sala- sam&ungan 0 sam&unggan "a&el/ a#a"a- su!a- "e$a$/ se&a&

#e%sam&ungan ang l*ngga% !a#a$ menim&ul"an #anas ang $inggise%$a !a#a$ menggangu "es$a&ilan a%us las'

• Jangan mele$a""an las #a!a me+a las a$au #a!a &en!a "e%+a'

• Pe%&ai"ila- sege%a "a&el0"a&el ang %usa"'

• Pemeli-a%aan !an #e%&ai"an mesin as se&ai"na !i$angani *le- *%angang a-li !i&i!angna'

• Jangan mengganggu "*m#*nen0"*m#*nen !a%i mesin las'

WELDING DEPARTMENT


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RESIKO LAS FCAW

• Sina% las

– Dalam #%*ses #engelasan $im&ul sina%ang mem&a-aa"an *#e%a$*% las !an

#e"e%+a lain !i!ae%a- #engelasan' Sina%ang mem&a-aa"an $e%se&u$ a!ala- 4

• Ca-aa $am#a"

• Sina% in5%a me%a-

• Sina% ul$%a6i*le$

WELDING DEPARTMENT


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RESIKO LAS FCAW

• Sina% las

– Ca-aa $am#a"

• Ben!a "e%+a !an "a.a$ ele"$%*!a ang

men,ai% #a!a FCAW mengelua%"an ,a-aa$am#a"' Semua ,a-aa $am#a" ang masu""e ma$a a"an !i$e%us"sn *le- lensa !an"*%nea ma$a "e %e$ina ma$a' Bila ,a-aa ini$e%lalu "ua$/ ma"a ma$a a"an sege%a men+a!ilela- !an "alau $e%lalu lama mung"in men+a!isa"i$/ .alau#un %asa lela- !an sa"i$ #a!ama$a $e%se&u$ si5a$na -ana semen$a%a'

WELDING DEPARTMENT


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RESIKO LAS FCAW

• Sina% las

– Sina% in5%a me%a-• Sina% in5%a me%a- &e%asal !a%i &usu% lis$%i"' A!ana sina%

in5%a me%a- $i!a" sege%a $e%asa *le- ma$a/ "a%ena i$u

sina% ini le&i- &e%&a-aa/ se&a& $i!a" !i"e$a-ui/ $i!a"$e%li-a$' A"i&a$ !a%i sina% in5%a me%a- $e%-a!a# ma$asama !engan #enga%u- #anas/ ai$u a"an $e%+a!i#em&eng"a"an #a!a "el*#a" ma$a/ $e%+a!ina #ena"i$"*%nea !an "e%a&unan' Ja!i +elas a"i&a$ sina% in5%a me%a-

+au- le&i- &e%&a-aa !a%i #a!a ,a-aa $am#a"' Sina%in5%a me%a- selain &e%&a-aa #a!a ma$a +uga !a#a$mene&a&"an $e%&a"a% #a!a "uli$ &e%ulang0ulang 1mula0mula me%a- "emu!ian mema% !an selan+u$na $e%"elu#asang sanga$ %ingan2'

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RESIKO LAS FCAW

• Sina% las

– Sina% ul$%a6i*le$

• Sina% ul$%a 6i*le$ se&ena%na a!ala- #an,a%anang mu!a- $e%se%a#/ $e$a#i sina% ini mem#unai#enga%u- ang &esa% $e%-a!a# %ea"si "imia ang$e%+a!i !i!alam $u&u-' Bila sina% ul$%a 6i*le$ ang$e%se%a# *le- lensa mele&i-i +umla- $e%$en$u /ma"a #a!a ma$a $e%asa sea"an0a"an a!a &en!a

asing !i!alamna !alam .a"$u an$a%a ? sam#ai93 +am/ "emu!ian ma$a a"an men+a!i sa"i$selama ? sam#ai 3; +am' Pa!a umumna %asasa"i$ ini a"an -ilang se$ela- ; +am'

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RESIKO LAS FCAW

• Sina% las

– usa-a #en,ega-an a$au u#aa "a%ena"e,ela"aan a"i&a$ sina% las/ an$a%a lain 4

• Mema"ai #elin!ung ma$a !an mu"a "e$i"amengelas/ ai$u "e!*" !an -elm las'

• Mema"ai "eselama$an !an "ese-a$an "e%+a ai$u#a"aian #elin!ung a$au #a"aian "e%+a/a#%*n a$au +a"e$ las/ a%ung $angan/ !an se#a$u "eselama$an"e%+a'

• Bua$la- &a$as a$au #elin!ung !ae%a- #engelasansu#aa *%ang lain $i!a" $e%ganggu 1mengguna"an"ama% las $e%$u$u#/ mengguna"an $a&i% #eng-alang2'

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RESIKO LAS FCAW

• De&u !an Asa# las – De&u !an asa# las &esa%na &e%"isa% an$a%a =/3 mm

sam#ai !engan : mm ang &iasana $e%!i%i !a%i +enis !e&u e$e%ni$ !an -i!%*gen %en!a-' Bu$i% !e&u

a$au asa# !engan u"u%an =/ mm !a#a$ $e%-isa#/$e$a#i se&agian a"an $e%sa%ing *le- &ulu -i!ung !an&ulu #i#a #e%na#asan/ se!ang ang le&i- -alus a"an$e%&a.a "e !alam !an "e lua% "em&ali' De&u a$auasa# ang $e%$inggal !an mele"a$ #a!a "an$*ng

u!a%a !i #a%u0#a%u a"an menim&ul"an #ena"i$/se#e%$i sesa" na#as !an lain se&againa' Ka%ena i$u!e&u !an asa# las #e%lu !a#a$ #e%-a$ian "-usus'

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RESIKO LAS FCAW

• De&u !an Asa# las – Aga% !e&u !an asa# $i!a" $e%$inggal !i !alam $u&u-/

u#aa ang -a%us !ila"u"an an$a%a lain 4• Pe%e!a%an u!a%a a$au 6en$ilasi -a%us &ena%0&ena% !ia$u% !an

!iu#aa"an/ !i mana se$ia# "ama% las !ileng"a#i !engan #i#a#engisa# !e&u !an asa# ang #enem#a$anna +angan mele&i-i$inggi %a$a0%a$a 7 #*sisi .a+a- 1 -i!ung 2 *#e%a$*% las ang&e%sang"u$an'

• Mengguna"an "e!*"7 -elm las se,a%a &ena%/ a"ni #a!a saa$#engelasan &e%langsung -a%us menu$u#i sam#ai !i &a.a- .a+a-1 !agu 2/ se-ingga mengu%angi asa#7 !e&u %ingan mele.a$i .a+a-'

• Mengguna"an &a+u las 1A#%*n2 $e%&ua$ !a%$ "uli$ a$au as&es'

• Mengguna"an ala$ #e%na5asan #elin!ung !e&u/ +i"a %uanganna$i!a" a!a si%"ulasi u!a%a ang mema!ai 1 sama se"ali $i!a" a!a 2'

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RESIKO LAS FCAW

• Lu"a &a"a% – Lu"a &a"a% !a#a$ $e%+a!i "a%ena l*gam #anas/ &usu%

,a-aa/ !an l*n,a$an &unga a#i' Lu"a &a"a% !a#a$!ia"i&a$"an *le- l*gam #anas "a%ena a!ana

#en,ai%an &en!a "e%+a an$a%a 9= C' Lu"a &a"a%ang !ia"i&a$"an *le- l*n,a$an &unga a#i a!ala-l*n,a$an &u$i%an l*gam ,ai% ang !i$im&ul"an *le-,ai%an l*gam' Bia%#un &unga a#i i$u "e,il/ $a#i !a#a$

melu&angi "uli$ melalui #a"aian "e%+a/ l*&ang "an,ing

ang le#as a$au #a"aian "e%+a ang l*ngga%' Su#aalu"a &a"a% $i!a" mengenai "i$a/ #a!a saa$

meng*#e%asi"an mesin FCAW *#e%a$*% las -a%usmema"ai &a+u "e%+a ang leng"a#'

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PERLENGKAPAN K: FCAW

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MENGHUBUNGKAN DANMENGHUBUNGKAN DANMENGESET PERALATANMENGESET PERALATAN

PENGELASANPENGELASAN

BAB I>BAB I>

K: DALAM PEMASANGAN


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K: DALAM PEMASANGANPERLENGKAPAN LAS FCAW

• Hal ang -a%us !i#e%-a$i"an #a!a .a"$u#emasangan #e%leng"a#an las FCAW a!ala- 4 – Ta&ung0$a&ung gas/ %egula$*% !an selang0selang gas -a%us

!i#e%-a$i"an !an !i#e%la"u"an !engan -a$i0-a$i'

– Mesin las !an wire feeder -a%us !i-u&ung"an !engan -a$i0-a$i !an &ena% "e sum&e% $enaga'

– Ka&el las -a%us !i+au-"an !a%i +ang"auan a#i/ !an!ilin!ungi !a%i #anas mau#un #e%,i"an a#i !a%i#engelasan'

– Pe%-a$i"an u%u$an #emasanganna' – I"u$i #e$un+u"0#e$un+u" "-usus !a%i #a&%i" #em&ua$

#e%leng"a#an las $e%se&u$'

WELDING DEPARTMENT

K: DALAM PEMASANGAN


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K: DALAM PEMASANGANPERLENGKAPAN LAS FCAW

• Penga$u%an #*sisi #e%leng"a#an lasFCAW ang aman 4

– Ta&ung gas !an ai% #en!ingin !isa$u"an/

le$a"na !e"a$ !engan mesin #engge%a""a.a$/ aga% mu!a- !i-u&ung"an'

– Mesin las -a%us !e"a$ !engan sum&e%$enaga !an se!e"a$ mung"in !engan mesin

#engge%a" "a.a$ aga% -u&ungan !e"a$' – Bila masing0masing ala$ su!a- &ena%

#*sisina/ &a%u"a- sia# un$u" !iguna"an'

WELDING DEPARTMENT

PROSEDUR PEN@ETELAN


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PROSEDUR PEN@ETELANPERLENGKAPAN LAS FCAW

Lang"a-0lang"a- #ene$elan 4

• Hu&ung"an "a&el mesin las "e sum&e% $enaga/ lalu-i!u#"an mesin'

• Se$el #eng*n$%*l #engge%a" "a.a$ #a!a #*sisi n*l/

su#aa "a.a$ $i!a" +alan !ulu se&elum .a"$una'• Bu"a "a$u#0"a$u# #a!a $a&ung gas !an $a&ung ai%

#en!ingin'

• Ta%i" #ela$u" #is$*l las/&u"a "%an ai% ali%an gas #a!a#enga$u%na/ "emu!ian se$el ali%an gas menu%u$"e$en$uan'

• Se"a%ang se$el "e,e#a$an ge%a" "a.a$'

• Se$el &esa% $egangan ang sesuai !engan "e$en$uan'

WELDING DEPARTMENT

PROSEDUR PEN@ETELAN


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• Se$el s$i," *u$ sesuai !engan "e&u$u-an 4 – P*sisi n*%mal 1am#e%e $inggi2

– P*sisi se$a%a n*el 1am#e%e menenga-2

– P*sisi men+ulu% 1am#e%e %en!a-2

WELDING DEPARTMENT

PROSEDUR PEN@ETELAN


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• Se$el &esa%na $egangan/ se&ai"na am&il %a$a %a$a $egangan +angan $e%lalu %en!a- mau#un $e%lalu$inggi'

• Se$ela- semua selesai !engan &ai" #engelasan

!a#a$ !i mulai' sen$u-"an u+ung ele"$%*!a "e &en!a"e%+a se-ingga $im&ul &usu% lis$%i"/ !an #ela$u"sege%a !i $a%i"' Ji"a mengalami "esuli$an !alammenga.ali #engelasan/ !a#a$ !i guna"an &al*"se&agai #em&an$u un$u" l*n+a$an &usu% a#i'

• Demi "eselama$an/ se&elum mem#%a"$e""an #%*seslas MIG se&ai"na #ela+a%i !ulu ,a%a #enesuaianmengelas !an mem&ena-i #e%leng"a#anna'

WELDING DEPARTMENT

PROSEDUR PEN@ETELAN


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Lang"a-0lang"a- #em&ena-an 4• Le#as #ela$u" #is$*l las &ila #engelasan su!a-

selesai la.a$ !an gas &e%-en$i mengali%' Jau-"an#is$*l las !a%i &en!a "e%+a se-ingga &usu% lis$%i"

$e%#u$us !an ma$i'• Tu$u# "a$u# gas #elin!ung

• Se$el "e,e#a$an "a.a$ #a!a #*sisi n*l

• Tu$u# "a$u# gas ang $e%!a#a$ #a!a %egula$*%

• Ma$i"an mesin #engge%a" "a.a$

• Ma$i"an mesin las

• Be%es"an ala$0ala$ ang $ela- !i#a"ai

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GAS PELINDUNG FCAW

• De)nisi – Pelin!ung un$u" mem#e%$a-an"an a$au men+aga s$a&ili$as

&usu% !an #e%lin!ungan ,ai%an l*gam las !a%i "*n$aminasiselama #engelasan/ $e%u$ama !a%i a$m*s5e% !an#eng*$*%an !ae%a- las'

• Fungsi – mem&en$u" se"eliling !ae%a- #engelasan !engan me!ia

#elin!ung ang $i!a" &e%ea"si !engan !ae%a- las$e%se&u$'

– mengusi% u!a%a !i se"i$a% &usu% !an "*lam las aga% $i!a"&e%singgungan !engan ,ai%an me$al un$u" men,ega-$e%+a!ina #%*ses *"si!asi me$al $e%se&u$ *le- *"sigen!alam u!a%a'

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GAS PELINDUNG FCAW

• Jenis0+enis gas #elin!ung

– Gas A%g*n

– Gas Helium

– Gas Ka%&*n Di*"si!a

WELDING DEPARTMENT

JENIS0JENIS GAS PELINDUNG


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JENIS JENIS GAS PELINDUNGFCAW

• Gas A%g*n – A%g*n a!ala- +enis gas #elin!ung ang !iguna"an se,a%a sen!i%i a$au

!i,am#u% !engan gas lainna un$u" men,a#ai "a%a"$e%is$i" &usu% ang!iingin"an #a!a #%*ss #engelasan l*gam 5e%%* mau#un n*n05e%%*'

– Ham#i% semua #%*ses #engelasan FCAW !a#a$ mengguna"an gas

a%g*n a$au ,am#u%an gas a%g*n un$u" men!a#a$"an mam#u las/#%*#e%$i me"ani"/ "a%a"$e%is$i" &usu% !an #%*!u"$i)$as ang &ai"'

– Gas a%g*n !iguna"an se,a%a sen!i%i $an#a ,am#u%an un$u" #%*ses#engelasan l*gam n*n05e%%*/ se#e%$i alumunium/ #a!uan ni"el/ #a!uan$em&aga/ !an lainna'

– Gas a%g*n !a#a$ meng-asil"an s$a&ili$as &usu% ang &ai" #a!a

#engelasan &usu% s#%a/ !an meng-asil"an #ene$%asi se%$a &en$u"bead weld ang &ai"'

– Ke$i"a mengguna"an l*gam 5e%*/ gas a%g*n &iasana !i,am#u% !engan

gas lainna s#e%$i *"sigen/ !an -elium' P*$ensi i*nisasi ang %en!a-!a%i gas a%g*n/ meng-asil"an "es$a&ilan &usu% ang su#e%i*%'

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• Gas A%g*n – Pe%&an!ingan -asil #engelasan gas a%g*n mu%ni !an gas a%g*n

,am#u%an 4

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• Gas Helium – Helium a!ala- gas #elin!ung ang !iguna"an

un$u" a#li"asi #engelasan ang mem&u$u-"anmasu"an #anas 1heat input 2 ang le&i- &esa%un$u" mening"a$"an bead wetting/ #ene$%asiang le&i- !alam !an "e,e#a$an #engelasanang le&i- ,e#a$'

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J S J S G S U GFCAW

• Gas Helium – Pe%&an!ingan -asil #engelasan gas a%g*n

mu%ni !an gas a%g*n ,am#u%an -elium 4

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J JFCAW

• Gas Ka%&*n Di*"si!a – Gas "a%&*n !i*"si!a umumna !iguna"an

un$u" #%*ses #engelasan un$u" l*gam 5e%%*'

–

Kele&i-an !a%i gas #elin!ung "a%&*n !i*"si!aa!ala- "e,e#a$an #engelasan ang ,e#a$ !an#ene$%asi ang le&i- !alam'

– Gas "a%&*n !i*"si!a +uga !a#a$ !i,am#u%!engan gas #elin!ung lainna un$u"menam&a- "a%a"$e%is$i" "imia gas $e%se&u$'

WELDING DEPARTMENT



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J JFCAW

• Gas Ka%&*n Di*"si!a – Pe%&an!ingan -asil #engelasan gas "a%&*n

!i*"si!a mu%ni !engan gas a%g*n ,am#u%an 4

WELDING DEPARTMENT

PARAMETER PENGELASAN


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PARAMETER PENGELASANFCAW

• A%us las

• E"s$ensi ele"$%*!a

• Tegangan las• Ke,e#a$an #engelasan 1arc

tra%el speed)

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• A%us las – Besa%na a%us !an $egangan #engelasan a!ala-

$e%gan$ung #a!a 4

• $e&al &a-an

•

!iame$e% "a.a$ ele"$%*!a• #*sisi #engelasan

• &e%!asa%"an WPS 1 welding procedure speci*cation 2#e"e%+aan $e%se&u$

– Dalam #%*ses #engelasan FCAW/ a%us las se,a%a

langsung &e%-u&ungan !engan "e,e#a$an wirefeed' Ji"a a%us las !inai""an ma"a "e,e#a$an wirefeed +ugase-a%usna nai"' Hu&ungan ini &iasana !ise&u$

"a%a"$e%is$i" burn-o '

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• A%us las – Ke$en$uan umum #ene$elas &esa%an a%us !an

$egangan &e%!asa%"an !iame$e% "a.a$ele"$%*!a 4

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– E"s$ensi ele"$%*!a a$au &iasa !ise&u$!engan stick-out a!ala- +a%a" an$a%a

$i$i" $e%u+ung !a%i "*n$a" lis$%i"/&iasana u+ung !a%i #i#a "*n$a" 1contacttip2/ !engan u+ung !a%i ele"$%*!a' Ja%a"$e%se&u$ a"an mem#enga%u-i &esa%na

a%us lis$%i" ang !i&u$u-"an un$u"melele-"an ele"$%*!a'

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WELDING DEPARTMENT



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• Tegangan las – Tegangan &usu% las a!ala- $egangan !ian$a%a u+ung

ele"$%*!a !an &en!a "e%+a'

– Tegangan lis$%i" #a!a #engelasan memegang

#e%anan #en$ing #a!a +enis $%ans5e% l*gam ang!iingin"an'

– T%ans5e% l*gam a%us #en!e" mem&u$u-"an$egangan ang %en!a-/ semen$a%a $%ans5e% l*gams#%a mem&u$u-"an $egangan ang le&i- $inggilagi'

– Ji"a a%us lis$%i" !inai""an/ ma"a $egangan las +uga-a%us !inai""an un$u" meng-asil"an "es$a&ilan

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• Ke,e#a$an #engelasan – Ke,e#a$an #engelasan &e%&an!ing se,a%a linie% !engan

#e%ge%a"an &usu% las se#an+ang &en!a "e%+a' Pa%ame$e%

ini &iasana !ina$a"an !alam me$e% #e% meni$'

–

Dengan mening"a$na "e$e&alan ma$e%ial/ "e,e#a$an-a%us !i$u%un"an'

– Dengan ma$e%ial !an +enis #enam&ungan ang sama/ +i"a a%us lis$%i" mening"a$/ ma"a "e,e#a$an #engelasan +uga -a%us mening"a$'

– Ke,e#a$an #engelasan ang le&i- $inggi !a#a$mengguna"an $e"ni" #engelasan ma+u 1forehandtechni+ue)&

WELDING DEPARTMENT

JENIS PERPINDAHAN


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JELEKTRODA FCAW

• Pe%#in!a-an l*gam ele"$%*!a !i#enga%u-i *le-&e&e%a#a 6a%ia&el !ian$a%ana 4

– $i#e gas #elin!ung ang !iguna"an

– $egangan las

– +enis a%us ang !iguna"an

– !iame$e% ele"$%*!a

– "e,e#a$an "a.a$ ele"$%*!a

• Se-ingga metal transfer !i&agi men+a!i : +enis/ ai$u4

– Short !ircuit Transfer

– Globular Transfer

– Spra rc Transfer WELDING DEPARTMENT

JENIS PERPINDAHAN


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JELEKTRODA FCAW

• Short !ircuit Transfer – Ilus$%asi

WELDING DEPARTMENT

JENIS PERPINDAHAN


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JELEKTRODA FCAW

• Short !ircuit Transfer – Si"lus

WELDING DEPARTMENT

JENIS PERPINDAHAN


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ELEKTRODA FCAW

• Short !ircuit Transfer – M*!e #emin!a-an l*gam

WELDING DEPARTMENT

JENIS PERPINDAHAN


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ELEKTRODA FCAW

• Globular Transfer – Ilus$%asi

WELDING DEPARTMENT

JENIS PERPINDAHAN


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ELEKTRODA FCAW

• Globular Transfer – Kelema-an

• Te%+a!ina spatter

• Suli$ un$u" mengelas selain #*sisi .at !an*llet horizontal&

• Suli$ un$u" mengelas l*gam !i a$as : mm'

WELDING DEPARTMENT

JENIS PERPINDAHAN


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ELEKTRODA FCAW

• Spra rc Transfer – Ilus$%asi

WELDING DEPARTMENT

PROSES PENGELASAN FCAW


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PROSES PENGELASAN FCAW

WELDING DEPARTMENT


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MENGIDENTIFIKASIMENGIDENTIFIKASIMETODA PENCEGAHANMETODA PENCEGAHAN

DISTORSIDISTORSI

BAB >BAB >

DISTORSI


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DISTORSI

• De)nisi – #e%gese%an &en$u" a$au &en$u" !a%i &en!a lasan

a"i&a$ !a%i #enusu$an'

• Penusu$an a"i&a$ #engelasan $i!a" !a#a$ !i-in!a%i

#a!a &en!a a$au l*gam ang !isam&ung !engan lasse&a& #%*ses #engelasan meme%lu"an #emanasan!engan $em#e%a$u% ang ,u"u# $inggi/ se-ingga #a!asaa$ #en!inginan $e%+a!i #enusu$an angmenga"i&a$"an #e%u&a-an u"u%an sam&ungan las

a$au &en$u" !a%i l*gam ang !ilas men+a!i &e%u&a-/#a!a saa$ !ilas mem#unai &en$u" lu%us $e$a#i se$ela-selesai !ilas a$au se$ela- !ingin men+a!i &eng"*"'

WELDING DEPARTMENT

TEKNIK PENGELASAN


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UNTUK DISTORSI

• Las ,a$a$

• Mengguna"an ala$ &an$u

• Mengguna"an #ela$ #unggung

• Pengelasan &e%u%u$an

WELDING DEPARTMENT

TEKNIK PENGELASAN


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UNTUK DISTORSI

• Las ,a$a$ 1tack-weld2

WELDING DEPARTMENT

TEKNIK PENGELASAN


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UNTUK DISTORSI

• Mengguna"an ala$ &an$u 1 /ig and*,ture2

WELDING DEPARTMENT

TEKNIK PENGELASAN


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UNTUK DISTORSI

• Mengguna"an #ela$ #unggung1backing bar 2

WELDING DEPARTMENT

TEKNIK PENGELASAN


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UNTUK DISTORSI

• Pengelasan &e%u%u$an 1se+uenceweld2

WELDING DEPARTMENT

PENGONTROLAN DISTORSI


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• Tegangan !i !alam #engelasan a!ala- $egangan ang!ia"i&a$"an *le- a!ana #e%u&a-an &en$u" #a!a &agianang !ilas'

• Pe%u&a-an ini !ia"i&a$"an *le- #anas ang mene&a&"anl*gam mengem&ang !an "e$i"a l*gam !ingin

#engem&angan ini $i!a" !a#a$ menusu$ se#e%$i se!ia"ala'• Ti!a" &isa "em&alina #*sisi #engem&angan "e #*sisi

semula menga"i&a$"an $e%+a!ina !is$*%si'

• Dis$*%si ini si5a$na mena%i" &en!a "e%+a ang !ilas "e a%a-!ae%a- !imana #engelasan !ila"u"an'

• Dis$*%si !a#a$ !iminimal"an !engan mengi"a$ &en!a "e%+a#a!a "lem ang a!a #a!a )$u%e "e$i"a !ila"u"an#engelasan sesuai !engan #en+elasan !i a$as'

WELDING DEPARTMENT



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Ca%a lain ang !a#a$ !iguna"an un$u" meminimal"an $e%+a!ina !is$*%sia!ala- 4

9' Jangan mengelas !engan l*gam !e#*si$ ang &e%le&i-an'

3' Guna"anla- ,a%a mengelas &e%selang 1intermittent welding2

:' Meminimal"an +umla- la#isan !i !alam #engelasan'

;' Mengelas !engan lang"a- mun!u%'

' Mengese$ sam&ungan ang &iasana meleng"ung a"i&a$ $a%i"an las

!engan #*sisi men+au-i se-ingga "e$i"a #engelasan selesai!ila"u"an

#*sisi ini a"an sesuai !engan #*sisi ang !i-a%a#"an'

?' Ji"a #engelasan !ila"u"an &e%se&ela-an/ la"u"an #engelasan &e%gan$ian

$a-a# !emi $a-a# an$a%a sisi ang sa$u !engan sisi ang lain'

' Guna"an &en$u" sam&ungan las ang &ena%'

' Sam&ungan las !iusa-a"an men!e"a$i sum&u ne$%al'

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• Mes"i#un se,a%a 6isual "e!ua me$*!a inimeng-asil"an #enam#a"an sam&ungan ang&ai"/ $i!a" &e%a%$i !i !alam sam&ungan $i!a" a!a$egangan'

• Di!alam sam&ungan $egangan ini $e$a# a!a ang!ise&u$ $egangan sisa 1residual stress2'

• Tegangan ini !a#a$ !i-ilang"an !enganmela"u"an #e%la"uan #anas ang !ise&u$ stress

relie%ing ai$u memanasi sam&ungan #a!a su-u$e%$en$u !an !i!ingin"an #e%la-an la-an'

WELDING DEPARTMENT

SOAL LATIHAN


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SOAL LATIHAN

9' Jelas"an #enge%$ian !a%i !is$*%si

3' A#a #ene&a& !is$*%si !i!alam#engelasan

:' Se&u$"an $e"ni"0 $e"ni" "-usus un$u"mengu%angi !is$*%si &e%i"u$ #en+elasanna

;' Se&u$"an ,a%a lain un$u" meminimalisi%$e%+a!ina !is$*%si

' Jelas"an !engan gam&a% #%*ses#engelasan mengguna"an backing bar


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MENGELAS MATERIALMENGELAS MATERIALDENGAN BENARDENGAN BENAR

BAB >IBAB >I

PROSEDUR UMUMPENGELASAN FCAW


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PENGELASAN FCAW

9' A!ana #%*se!u% #e%$*l*ngan #e%$ama #a!a "e,ela"aan1P:K2 !an #%*se!u% #enanganan "e&a"a%an ang +elas 7$e%$ulis'

3' Pe%i"sa sam&ungan0sam&ungan "a&el las/ ai$u !a%imesin las "e "a&el las !an !a%i "a&el las "e &en!a "e%+a 7

me+a las se%$a sam&ungan !engan $ang las' Ha%us!ia"in"an/ &a-.a $ia# sam&ungan $e%#asang se,a%a&ena% !an %a#a$'

:' Pe%i"sa sa"la% sum&e% $enaga/ a#a"a- $ela- !i-i!u#"an'

;' Pa"ai #a"aian "e%+a ang aman'

' K*nsen$%asi !engan #e"e%+aan'

?' Se$ia# ge%a"an n*le 7 "a.a$ ele"$%*!a -a%us selalu$e%"*n$%*l'

WELDING DEPARTMENT

PROSEDUR UMUMPENGELASAN FCAW


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PENGELASAN FCAW

' Be%!i%i se,a%a seim&ang !an !engan "ea!aan %ile"s'' Pe%i"sa/ a#a"a- #eng-alang sina% las7 %uang las su!a-

$e%$u$u# se,a%a &ena%'

' Tem#a$"an $ang ele"$%*!a #a!a $em#a$ ang aman +i"a$i!a" !i#a"ai'

9=' Selalu guna"an "a,a ma$a #engaman selama &e"e%+a !i!alam &eng"el'

99' Be%si-"an $e%a" a$au #e%,i"an las se&elum melan+u$"an#engelasan &e%i"u$na'

93' Ma$i"an mesin las &ila $i!a" !iguna"an'9:' Jangan meninggal"an $em#a$ "e%+a !alam "ea!aan "*$*%

!an "em&ali"an #e%ala$an ang !i#a"ai #a!a $em#a$na'

WELDING DEPARTMENT

PERSIAPAN BAHAN


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PENGELASAN• Pe%sia#an &a-an las $ia# +enis #%*ses #engelasan

#a!a #%insi#na $i!a" &e%&e!a/ $e%u$ama &ila!i&an!ing"an !engan #e%sia#an &a-an las #a!a#%*ses Las Busu% Manual 1SMAW2/ &ai" #e%sia#an

sam&ungan $um#ul 1butt /oint 2 mau#un un$u"sam&ungan su!u$ 1*llet /oint 2/ "e,uali WPS1welding procedure speci*cation2 un$u" #e"e%+aan$e%$en$u meng-en!a"i lain'

•

Pe%sia#an &a-an #engelasan s$an!a% meli#u$i 4 – Pem&ua$an "am#u- las

– Pem&ua$an las ,a$a$ 1tack-weld2

WELDING DEPARTMENT

PERSIAPAN BAHAN


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PENGELASAN• Pem&ua$an "am#u- las

– Me$*!e 4

• Ala$ #em*$*ng gas 1brander potong2

– C*n$*- 4 sam&ungan $um#ul

• Mesin #em*$*ng gas lu%us 1straight line cutting machine2

– C*n$*- 4 "am#u- las &e6el 1"am#u- > a$au 2

• Mesin #em*$*ng gas ling"a%an 1circular cutting machine2

– C*n$*- 4 #em*$*ngan ( #em&ua$an &e6el #i#a

• Mesin &u&u$

– C*n$*- 4 #em*$*ngan ( #em&ua$an &e6el #i#a

• Mesin #*$*ng #ela$ 1guletin2 (hidrolic shearing machine2 – C*n$*- 4 sam&ungan su!u$ 1*llet 2/ "am#u- I

• Mesin #*$*ng #lasma 1 plasma cutting machine2

– C*n$*- 4 #em*$*ngan #ela$ 7 #i#a 7 &e6el

WELDING DEPARTMENT

PERSIAPAN BAHAN


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PENGELASAN• Pem&ua$an las ,a$a$ 1tack-weld2

– Hal ang #e%lu !i#e%-a$i"an 4

• Ba-an las -a%us &e%si- !a%i &a-an0&a-an ang mu!a- $e%&a"a% !an"a%a$'

• Pa!a sam&ungan su!u$ ,u"u# !i las ,a$a$ #a!a "e!ua u+ungse#an+ang #enam#ang sam&ungan 1$e&al &a-an $e%se&u$2' Bila!ila"u"an #engelasan sam&ungan su!u$ 1T2 #a!a "e!ua sisi/ ma"a"*ns$%u"si sam&ungan -a%us = $e%-a!a# &i!ang !a$a%na' Bila-ana sa$u sisi sa+a/ ma"a su!u$ #e%a"i$anna a!ala- :0 men+au-isisi $ega" sam&ungan/ a"ni un$u" mengan$isi#asi $egangan#enusu$an 7 !is$*%si se$ela- #engelasan'

• Pa!a sam&ungan $um#ul "am#u- >/ / U a$au J #e%lu !ilas ,a$a$ #a!a

&e&e%a#a $em#a$/ $e%gan$ung #an+ang &en!a "e%+a' Un$u" #an+ang&en!a "e%+a s$an!a% un$u" u+i #%*5esi las 1:== mm2 !ila"u"an $iga las,a$a$/ ai$u "e!ua u+ung !an $enga- !engan #an+ang las ,a$a$ an$a%a903= mm a$au tig !"#i $"#t %&i t$'& ' &!. Se!angun$u" #an+ang &en!a "e%+a !i&a.a- a$au sama !engan 9= mm !a#a$!ilas ,a$a$ #a!a "e!ua u+ung sa+a'

WELDING DEPARTMENT

METODA PENGELASAN


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FCAW• A%a- #engelasan FCAW

– A%a- ma+u

– A%a- mun!u%

WELDING DEPARTMENT

METODA PENGELASAN


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FCAW• Ge%a"an 7 Aunan Las

– Ge%a"an ele"$%*!a 1welding gun2 #a!a #engelasanFCAW !i#enga%u-i *le- 4

• Ben$u" sam&ungan

• $e&al &a-an

• le&a% #e%sia#an sam&ungan

• +enis &a-an

• #*sisi #engelasan

– Ge%a"an a$au aunan .el!ing gun !iu#aa"an lu%us/

a#a&ila $i!a" memung"in"an ge%a"an lu%us 1misal#engelasan a%a- nai"2 !iusa-a"an mengguna"anaunan "e sam#ing seminimal mung"in' Misal le&a%aunan un$u" se$ia# +alu% ma"simal 9 mm'

WELDING DEPARTMENT

METODA PENGELASAN


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FCAW• Ge%a"an 7 Aunan Las

– C*n$*- aunan ele"$%*!a 1welding gun2 #a!a#engelasan FCAW 4

WELDING DEPARTMENT

METODA PENGELASAN


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FCAW• Su!u$ #engelasan

– su!u$ #engelasan a!ala- su!u$ ang!i&en$u" *le- #e%mu"aan &a-an !engan

welding gun – Su!u$ #engelasan &e%gan$ung #a!a 4

• P*sisi #engelasan

• Besa% a%us !an $egangan

WELDING DEPARTMENT

METODA PENGELASAN


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– P*sisi a$

WELDING DEPARTMENT

METODA PENGELASAN


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– P*sisi -*%i*n$al sam&ungan T 13F2

2

WELDING DEPARTMENT

METODA PENGELASAN


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– P*sisi -*%i*n$al sam&ungan $um#ul

WELDING DEPARTMENT

METODA PENGELASAN


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– P*sisi $ega" a$au 6e%$i"al

WELDING DEPARTMENT

TIPE SAMBUNGANLAS


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LAS

WELDING DEPARTMENT

METODA PENGELASANC


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FCAW• P*sisi #engelasan

– P*sisi &a.a- $angan 1downhand2 7 9F 79G

–P*sisi men!a$a% 1horizontal2 7 3F 7 3G

– P*sisi $ega" 1%ertical2 7 :F 7 :G

– P*sisi a$as "e#ala 1o%erhead2 7 ;F 7 ;G

WELDING DEPARTMENT

POSISI PENGELASAN


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WELDING DEPARTMENT

POSISI PENGELASAN1SAMBUNGAN FILLET2


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1SAMBUNGAN FILLET2

WELDING DEPARTMENT

POSISI PENGELASAN1SAMBUNGAN TUMPUL2


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1SAMBUNGAN TUMPUL2

WELDING DEPARTMENT

1SAMBUNGAN TUMPUL


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•P*sisi #i#a 9=7 6e%$i"al•Pi#a !a#a$ !i#u$a% : "ali•A%a- #engelasan 6e%$i"al•Pengelasan !imulai !a%i a%a- +am ;

•P*sisi #i#a =•

P*sisi #i#a $i!a" !a#a$ !i#u$a%•A%a- #engelasan -*%i*n$al

PIPA2

WELDING DEPARTMENT

1SAMBUNGAN TUMPUL


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• P*sisi #i#a 9=• Pi#a $i!a" !a#a$ !i#u$a%• Pengelasan !imulai !a%i a%a- +am ?• Pengelasan !ia"-i%i #a!a a%a- +am 93• Pengelasan !a#a$ !imulai !a%i a%a-

"anan mau#un "i%i

• P*sisi #i#a ;• Pi#a $i!a" !a#a$ !i#u$a%• Pengelasan !imulai !a%i a%a- +am ?• Pengelasan !ia"-i%i #a!a a%a- +am 93• Pengelasan !a#a$ !imulai !a%i a%a-

"anan mau#un "i%i

PIPA2

WELDING DEPARTMENT

POSISI PENGELASAN1PENGERJAAN2


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1PENGERJAAN2

WELDING DEPARTMENT

PERSIAPAN KAMPUH LAS1KAMPUH >2


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1KAMPUH >2

WELDING DEPARTMENT


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KERUSAKAN ATAU CACATKERUSAKAN ATAU CACATPENGELASANPENGELASAN

BAB >IIBAB >II

MACAM CACAT LAS


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C C C S

• Se,a%a umum/ ,a,a$ las !i&agi 3 4 – Ca,a$ las &agian lua%

• C*n$*- 4 undercut / o%erlap/ porosit / !ll'

–Ca,a$ las &agian !alam• C*n$*- 4 slag inclusion/ cracking/ !ll

WELDING DEPARTMENT

CACAT LAS BAGIAN LUAR


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• Ta"i"an &a.a- 1undercut 2

WELDING DEPARTMENT



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• Ta"i"an &a.a- 1undercut 2 – Pene&a& $e%+a!ina undercut an$a%a lain 4

92 Ke,e#a$an las $e%lalu $inggi'

32 >*l$ase $e%lalu $inggi'

:2 A%us $e%lalu &e%le&i-an'

;2 Wa"$u #en,ai%an 1dwell2 $e%lalu #en!e"'

2 Su!u$ tra%el angle !an work angle $i!a" $e#a$'

– Penanggulangan $e%+a!ina undercut ai$u 4

92 Pe%lam&a$ "e,e#a$an las'

32 Tu%un"an 6*l$ase'

:2 Ku%angi "e,e#a$an #as*" "a.a$ las';2 Tam&a- .a"$u #en,ai%an #a!a sisi "*lam las'

2 Be$ul"an #*sisi *&*% se-ingga $enaga &usu% !a#a$ mem&an$u!e#*sisi &a-an las'

WELDING DEPARTMENT



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• Penum#u"an l*gam las 1o%erlap2

WELDING DEPARTMENT



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• Penum#u"an l*gam las 1o%erlap2 – Pene&a& $e%+a!ina o%erlap ai$u 4

92 Ke,e#a$an #engelasan $e%lalu lam&a$'

32 Pene$elan am#e% $e%lalu %en!a-'

:2 P*sisi ele"$%*!a $i!a" &ena%'

Penanggulangan $e%+a!ina o%erlap ai$u 4

92 Pe%,e#a$ la+u #engelasan/ $e$a#i !enganmem#e%$im&ang"an $e&al &a-an'

32 A$u% am#e% sesuai !engan ele"$%*!a !an &a-an anga"an !i las'

:2 P*sisi"an ele"$%*!a se,a%a &ena% sesuai !engan $a$a

,a%a #engelasan ang $ela- !i$en$u"an

WELDING DEPARTMENT



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• P*%*si$as 1 porosit 2

WELDING DEPARTMENT



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• P*%*si$as 1 porosit 2 – Pene&a& $e%+a!ina #*%*si$i ai$u 4

92 K*n$aminasi a$m*s)%

32 O"si!asi ang $inggi #a!a #e%mu"aan &en!a "e%+a

:2 Ku%angna #a!uan !e*"si!asi #a!a ele"$%*!a – Penanggulangan $e%+a!ina #*%*si$i ai$u 4

92 O#$imal"an ali%an gas lin!ung

32 Ku%angi ali%an gas ang &e%le&i-an'

:2 Guna"an gas lin!ung "-usus un$u" las'

;2 Guna"an "a.a$ las ang "e%ing !an &e%si-'

2 Tu%un"an 6*l$ase'

?2 Ku%angi stick out

WELDING DEPARTMENT



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• Ku%ang #en,ai%an 1lack of fusion2

WELDING DEPARTMENT



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• Ku%ang #en,ai%an 1lack of fusion2 – Pene&a& $e%+a!ina lack of fusion ai$u 4

92 Pene$elan a%us $e%lalu %en!a-'

32 Te"ni" #engelasan ang sala-'

:2 Pe%sia#an #engelasan "u%ang sem#u%na'

;2 Mengguna"an "a.a$ las $i!a" sesuai !engan +enis sam&ungan'

2 Pe%mu"aan l*gam las "*$*%'

– Penanggulangan $e%+a!ina lack of fusion ai$u 4

92 Besa%"an a%us sesuai !engan &a-an ang a"an !i las'

32 Biasa"an mengelas sesuai !engan $e"ni" ang &ena%'

:2 Pe%sia#"an semua "e&u$u-an #engelasan &ai" !a%i segi

&a-an/#e%ala$an/mau#un ala$ "eselama$an "e%+a'

;2 Guna"an "a.a$ ele"$%*!a ang sesuai !engan +enis &a-an !an $e&al $i#is&a-an'

2 Se&elum mela"u"an #engelasan/ #as$i"an &en!a "e%+a !alam "*n!isi &es%i-!a%i segala "*$*%an'

WELDING DEPARTMENT



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• Te%,ema% $ungs$en 1tungsteninclusion2

WELDING DEPARTMENT



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• Te%,ema% $ungs$en 1tungsteninclusion2

– Pene&a& $e%+a!ina tungsten inclusion

ai$u 492 Pene$elan a%us $e%lalu $inggi !n ele"$%*!a

ang !i#a"ai $i!a" sesuai'

32 Pengasa-an ele"$%*!a $i!a" &ena%'

:2 Ele"$%*!a menen$u- &en!a "e%+a ssaa$#engelasan'

;2 L*gam las &ana" $e%,ema% *le- ele"$%*!a'

WELDING DEPARTMENT



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• Fusi $i!a" sem#u%na 1incomplete fusion2 – Pene&a& $e%+a!ina incomplete fusion

a!ala- 4

92 Pe%mu"aan *na las $i!a" &e&as !a%i )lm

"*$*%an a$au *"si!a

32 Masu"an #anas $i!a" ,u"u#

:2 K*lam las $e%lalu le&a%

;2 Te"ni" las ang $i!a" $e#a$

2 Desain sam&ungan $i!a" $e#a$

?2 Ke,e#a$an las &e%le&i-an

WELDING DEPARTMENT

CACAT LAS BAGIAN DALAM


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• Te%a" $e%+e&a" 1slag inclusion2

WELDING DEPARTMENT



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• Te%a" $e%+e&a" 1slag inclusion2 – Pene&a& $e%+a!ina slag inclusion ai$u 4

92 Ben!a "e%+a "*$*%'

32 Bana" !e&u mau#un *li'

:2 A%us $e%lalu %en!a- – U#aa #enanggulangan $e%+a!ina slag inclusion

aitu 0

92 Be%si-"an &en!a "e%+a/ mengguna"an si"a$ &a+a '

32 Be%si-"an &en!a "e%+a !a%i !e&u ang menem#el/mengguna"an "uas'

:2 Cu,i &en!a "e%+a !engan sa&un sam#ai&e%si-/"emu!ian "e%ing"an'

WELDING DEPARTMENT



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• Re$a" 1cracking2

WELDING DEPARTMENT



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• Re$a" 1cracking2 – Pene&a& $e%+a!ina cracking ai$u 4

92 Desain sam&ungan "u%ang $e#a$'

32 Pe%&an!ingan an$a%a le&a% !alam las $e%lalu &esa%'

:2 Jalu% las $e%lalu sem#i$ 1 $e%u$ama )lle% !an a"a% las 2'

;2 Masu"an #anas $e%lalu $inggi se-ingga mene&a&"an #eng"e%u$an'

$e%lalu &esa% !an !is$*%si'2 Re$a" hot short&

?2 Tegangan $inggi #a!a &agian sam&ungan'

2 Pen!inginan ,e#a$ #a!a "a.a- !i a"-i% +alu% las'

– U#aa #enanggulangan $e%+a!ina cracking ai$u 4

92 Pe%$a-an"an u"u%an "am#u- ang &ena%'

32 Nai""an 6*l$ase &usu% a$au $u%un"an a%us las a$au "e!uana'

:2 Ku%angi "e,e#a$an';2 Ku%angi a%us a$au $egangan "e!uana/ nai""an "e,e#a$an las'

2 Pe%guna"an "a.a$ las ang &e%"an!ungan mangan le&i- $inggi'

?2 Guna"an #emanasan a.al un$u" mengu%angi $egangan sisa

2 Hilang"an "a.a- !engan $e"ni" #engelasan mun!u% 1 back step )

WELDING DEPARTMENT



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• Pene$%asi $i!a" sem#u%na 1incomplete penetration2

– Pene&a& $e%+a!ina #ene$%asi $i!a" sem#u%na ai$u 4

92 Pe%sia#an "am#u- ang sala-'

32 Te"ni" #engelasan ang sala-'

:2 A%us las $i!a" mema!ai'

– U#aa #enanggulangan $e%+a!ina #ene$%asi $i!a" sem#u%naai$u 4

92 Ku%angi mu"a a"a% 1 root face ) ang $e%lalu le&a%'

32 Le&a%"an ,ela- a"a% 1 root gape )

:2 Pe%$a-an"an su!u$ ele"$%*!a $ega" lu%us !engan #e%mu"aan &en!a"e%+a'

;2 Pe%$a-an"an &usu% nala #a!a sisi !e#an "*lam las'

:2 Ting"a$"an "e,e#a$an #as*" "a.a$ las 1 a%us las 2

WELDING DEPARTMENT



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• Te%&a"a% $em&us 1melt through " burntthrough2

– Pene&a& $e%+a!ina melt through a!ala- 4

92 Masu"an #anas &e%le&i-an'

32 Pene$%asi las "u%ang &ai"' – U#aa #enanggulangan $e%+a!ina melt through

a!ala- 4

92 Ku%angi "e,e#a$an #as*"an "a.a$ las 1 a%us las 2 !an6*l$ase'

32 Nai""an "e,e#a$an las

:2 Ku%angi ,ela- las 1 root gap ) dan perlebar muka akar&

WELDING DEPARTMENT



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• Re$a" #a!a *na $e%im&as #anas 112 2 – Pene&a& $e%+a!ina %e$a" #a!a *na $e%im&as #anas

ai$u4

92 Penge%asan !alam s*na $e%im&as #anas'

32 Tegangan sisa $e%lalu $inggi'

:2 Pengge$asan -i!%*gen'

– U#aa #enanggulangan $e%+a!ina %e$a" #a!a *na$e%im&as #anas ai$u 4

92 Pemanasan a.al un$u" mem#e%lam&a$ la+u #en!inginan'

32 Guna"an #e%la"uan #anas #as"a las'

:2 Guna"an "a.a$ las ang &e%si- !an "e%ing !an gas lin!ungang $i!a" $e%"*n$aminasi ai%'

;2 Ke%ing"an #e%mu"aan &en!a "e%+a'

WELDING DEPARTMENT

TROUBLE SHOOTINGPENGELASAN FCAW


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PENGELASAN FCAW

• Masala- #a!a #engelasan FCAW !i"el*m#*""an !alam $iga "a$eg*%i/a"ni 4

–

Lis$%i" – Me"ani"

– P%*ses

WELDING DEPARTMENT



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PENGELASAN FCAW

• Penanggulangan masala- "elis$%i"an lasFCAW

WELDING DEPARTMENT



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PENGELASAN FCAW

• Penanggulangan masala- me"ani" lasFCAW

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148/148

PENGELASAN FCAW

• Penanggulangan masala- #%*ses las FCAW

pengelasan fcaw sementara (unsada) by ridwan

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