teknik pengelasan kapal 1

TEKNOLOGI LAS KAPAL
I.4. PEMOTONGAN......................................................................... 51
I.4.1. Pemotongan Gas ...................................................................... 51
I.4.2. Pemotongan Busur Plasma ...................................................... 58
I.4.3. Pemotongan dengan Sinar Laser .............................................. 66
I.4.4 Teknik Pemotongan................................................................... 70
I.5. KUALIFIKASI PENGELASAN.................................................... 89
I.5.1. Spesifikasi Prosedur Pengelasan ............................................. 90
I.5.2. Juru Las / Operator Las ............................................................. 93
I.5.3. Supervisi Las ............................................................................. 98
I.5.4. Inspektur Las............................. .............................................. 104
RANGKUMAN ....................................................................................... 118
LATIHAN SOAL ..................................................................................... 121
BAB II. PROSES PENGELASAN SECARA UMUM
II.1. PENGERTIAN PENGELASAN ................................................ 125
II.1.1. Penyambungan Logam............................................................ 125
II.1.2. Prinsip Pengelasan.................................................................. 127
II.1.3. Kelebihan dan Kekurangan Pengelasan ................................. 130
II.2. PERALATAN PENGELASAN .................................................. 141
II.2.1. Fenomena Las busur............................................................... 141
II.2.2. Mesin Las Busur ...................................................................... 159
II.3. MATERIAL LAS ....................................................................... 180
II.3.1. Baja roll untuk struktur umum ( Baja SS )............................... 180
II.3.2. Baja roll untuk struktur las ( SM Stell ).................................... 181
II.3.3. Baja berkekuatan tarik tinggi................................................... 182
II.3.4. Baja untuk servis temperatur rendah ...................................... 184
II.3.5 Perubahan Sifat Material pada Daerah Kena Pengaruh Panas
Las .......................................................................................... 185
II.3.6 Perlakuan Panas Dari Daerah Las ......................................... 188
II.3.7 Logam pengisi......................................................................... 190
II.4. PERENCANAAN KONSTRUKSI LAS ..................................... 225
II.4.1. Simbol Pengelasan.................................................................. 225
II.4.2. Disain Sambungan Las............................................................ 230
II.4.3. Sambungan Las....................................................................... 231
II.4.4. Penumpu Las........................................................................... 235
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