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Ferix Orlando Gultom | 125090807111002 | Fisika | Universitas Brawijaya  iv

LAPORAN KULIAH KERJA LAPANGAN

PT. KRAKATAU STEEL (PERSERO)

DIVISI COLD ROLLING MILL

DAFTAR ISI

LEMBAR PENGESAHAN .............................................................................................. i 

KATA PENGANTAR ..................................................................................................... ii 

DAFTAR ISI .....................................................................................................................iv 

DAFTAR GAMBAR ........................................................................................................vi

DAFTAR TABEL ........................................................................................................... ix

BAB 1: PENDAHULUAN

Latar Belakang ................................................................................................................... 1

Tujuan ................................................................................................................................ 2

Manfaat .............................................................................................................................. 2

Waktu dan Lokasi .............................................................................................................. 3

Bentuk Kegiatan ................................................................................................................. 3

Batasan Masalah ................................................................................................................ 3

Sistematika Penulisan Laporan .......................................................................................... 3

BAB II: PROFIL PERUSAHAAN

Latar Belakang Perusahaan ................................................................................................ 5

Visi dan Misi Perusahaan ................................................................................................. 11

 Nilai-Nilai Perusahaan ..................................................................................................... 11

Unit-Unit Produksi ........................................................................................................... 12

Pabrik Besi Spons ............................................................................................................ 12

Pabrik Billet Baja ............................................................................................................. 16

Pabrik Baja Slab ............................................................................................................... 18

Pabrik Baja Lembaran Panas ........................................................................................... 21

Pabrik Baja Batang Kawat ............................................................................................... 23

Pabrik Baja Lembaran Dingin ......................................................................................... 26

Anak Perusahaan PT. Krakatau Steel .............................................................................. 28

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Ferix Orlando Gultom | 125090807111002 | Fisika | Universitas Brawijaya  v

LAPORAN KULIAH KERJA LAPANGAN

PT. KRAKATAU STEEL (PERSERO)

DIVISI COLD ROLLING MILL

Perusahaan Join Venture .................................................................................................. 29

Struktur Organisasi Perusahaan ....................................................................................... 30

Kepegawaian dan Sistem Kerja Perusahaan .................................................................... 31

Kesejahteraan Karyawan ................................................................................................. 32

BAB III: DIVISI COLD ROLLING MILL

Profil Divisi ...................................................................................................................... 32

Continuous Pickling Line ................................................................................................ 35

Continuous Tandem Cold Mill ........................................................................................ 36

Elecrtolytic Cleaning Line ............................................................................................... 38

Annealing ......................................................................................................................... 41

Temper Pass Mill ............................................................................................................. 43

Finishing .......................................................................................................................... 44

BAB IV: DASAR TEORI

Relay ................................................................................................................................ 48

Programmable Logic Control (PLC) ............................................................................... 49

Sejarah PLC ..................................................................................................................... 51

PLC Hardware ................................................................................................................. 55

Pemrograman PLC Omron .............................................................................................. 62

DC SIMOREG Konverter ................................................................................................ 71

BAB V: PEMBAHASAN

Roll Grinding Machine .................................................................................................... 72

Sistem Kendali PLC Pada Grinding Machine ................................................................. 83

BAB VI: PENUTUP

Kesimpulan ...................................................................................................................... 97

Saran ................................................................................................................................ 97

DAFTAR PUSTAKA ..................................................................................................... 98

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Ferix Orlando Gultom | 125090807111002 | Fisika | Universitas Brawijaya  vi

LAPORAN KULIAH KERJA LAPANGAN

PT. KRAKATAU STEEL (PERSERO)

DIVISI COLD ROLLING MILL

CURRICULUM VITAE ................................................................................................ 99

LAMPIRAN .................................................................................................................. 100