Buku Teknik Las SMAW Kelas 10 SMK

Buku Teknik Las SMAW Kelas 10 SMK


Kelas 10
Pengarang -
Penerbit Direktorat Pembinaan Sekolah Menengah Kejuruan
Tahun 2014
Bagikan kepada teman anda.

Materi Teknik Las SMAW

HALAMAN SAMPUL ................................ ................................ ................................ .. i
HALAMAN FRANCIS ................................ ................................ ................................ . ii
DAFTAR ISI ................................ ................................ ................................ .............. iv
PETA KEDUDUKAN BAHAN AJAR TEKNIK PENGELASAN KAPAL ....................... ix

BAB I PENDAH ULUAN ................................ ................................ ............................. 1
1. Deskripsi ................................ ................................ ................................ ....... 1
2. Prasyarat ................................ ................................ ................................ ....... 1
3. Petunjuk Penggunaan ................................ ................................ ................... 1
4. Tujuan Akhir ................................ ................................ ................................ .. 2
5. Kompetensi Inti dan Kompetensi Dasar ................................ ........................ 3
6. Ce k Kemampuan Awal ................................ ................................ .................. 6

BAB II MATERI PEMBELAJARAN ................................ ................................ ............ 7
Karakteristik Logam Dasar Pengelasan ................................ ............................ 7
1. Deskripsi Pembelajaran ................................ ................................ ......... 7
2. Kegiatan Belajar ................................ ................................ .................... 7
2. 1. Kegiatan Belajar 1 : Jenis dan Karakteristik Log am Dasar
Pengelasan ................................ ................................ ................................ 7
Tujuan Pembelajaran ................................ ................................ 7 2.1.1.
Uraian Materi ................................ ................................ ............. 7 2.1.2.
Rangkuman ................................ ................................ ............. 35 2.1.3.
Tugas ................................ ................................ ...................... 35 2.1.4.
Tes Formatif ................................ ................................ ............ 35 2.1.5.
Lembar Jawaban Tes Formatif ................................ ................ 36 2.1.6.
Lembar Kerja Peserta didik ................................ ..................... 38 2.1.7.

2. 2. Kegiatan Belajar 2 : Perlakuan Logam Dasa r Pengelasan .......... 39
2.2.1. Tujuan Pembelajaran ................................ .............................. 39
2.2.2. Uraian Materi ................................ ................................ ........... 39
2.2.3. Rangkuman ................................ ................................ ............. 47
2.2.4. Tugas ................................ ................................ ...................... 49
2.2.5. Tes Formatif ................................ ................................ ............ 54
2.2.6. Lembar Jawaban Tes Formatif ................................ ................ 54
2.2.7. Lembar Kerja Peserta didik ................................ ..................... 56
Perlakuan Panas Logam Dasar Pengelasan ................................ ................... 57
1. Deskripsi pembelajaran ................................ ................................ ....... 57
2. Kegiatan Belajar ................................ ................................ .................. 57
2. 1. Kegiatan Belaja r 3 - 4 : Perlakuan Panas Logam Dasar
Pengelasan ................................ ................................ .............................. 58
Tujuan Pembelajaran ................................ .............................. 58 2.1.1.
Uraian Materi ................................ ................................ ........... 58 2.1.2.
Rangkuman ................................ ................................ ............. 73 2.1.3.
Tugas ................................ ................................ ...................... 73 2.1.4.
Tes Formatif ................................ ................................ ............ 74 2.1.5.
Lembar Jawaban Tes Formatif ................................ ................ 74 2.1.6.
Lembar Kerja Peserta Didik ................................ ..................... 76 2.1.7.

2. 2. Kegiatan Belajar 5 - 6 : Pre -heating dan Post -heating ................ 77
2.2.1. Tujuan Pembelajaran ................................ .............................. 77
2.2.2. Uraian Materi ................................ ................................ ........... 77
2.2.3. Rangkuman ................................ ................................ ............. 84
2.2.4. Tugas ................................ ................................ ...................... 85
2.2.5. Tes Formatif ................................ ................................ ............ 85
2.2.6. Lembar Jawaban Tes Formatif ................................ ................ 85
2.2.7. Lembar Kerja Peserta Didik ................................ ..................... 86
Teknologi Mesin Las SMAW ................................ ................................ ........... 88
1. Deskripsi pembelajaran ................................ ................................ ....... 88
2. Kegiatan Belajar ................................ ................................ .................. 88
2.1. Kegiatan Belajar 7 : Kelistrikan Dasar Las Listrik ........................... 88
Tujuan Pembelajaran ................................ .............................. 88 2.1.1.
Uraian Materi ................................ ................................ ........... 88 2.1.2.
Rangkuman ................................ ................................ ............. 96 2.1.3.
Tugas ................................ ................................ ...................... 96 2.1.4.
Tes Formatif ................................ ................................ ............ 96 2.1.5.
Lembar jawaban tes Formatif ................................ .................. 97 2.1.6.
Lembar Kerja Peserta Didik ................................ ..................... 97 2.1.7.

2.2. Kegiata n Belajar 8: Perangkat Las SMAW ................................ ..... 98
2.2.1. Tujuan Pembelajaran ................................ .............................. 98
2.2.2. Uraian Materi ................................ ................................ ........... 98
2.2.3. Rangkuman ................................ ................................ ........... 112
2.2.4. Tugas ................................ ................................ .................... 114
2.2.5. Tes Formatif ................................ ................................ .......... 114
2.2.6. Lembar jawaban tes Formatif ................................ ................ 115
2.2.7. Lembar Kerja Peserta Didik ................................ ................... 116
2. 3. Kegiatan Belajar 9 : Karakteristik Busur Las SMAW ................. 117
2.3.1. Tujuan Pembelajaran ................................ ............................ 117
2.3.2. Uraian Materi ................................ ................................ ......... 117
2. 4. Kegiatan Belajar 10 : Unjuk Kerja (Duty Cycle) Mesin Las SMAW ................................ ................................ ............................. 122
2.4.2. Uraian Materi ................................ ................................ ......... 122

Elektroda Las Las busur listrik manual (SMAW) ................................ ............ 126
1. Deskripsi pembelajaran ................................ ................................ ..... 126
2. Kegiatan Belajar ................................ ................................ ................ 126
2.1. Kegiatan Belajar 12 - 13 : Klasifikasi dan Kodifikasi Elektroda Las SMAW ................................ ................................ ................................ .... 126
Tujuan Pembelajaran ................................ ............................ 126 2.1.1.
Uraian materi ................................ ................................ ......... 126 2.1.2.
Rangkuman ................................ ................................ ........... 146 2.1.3.
Tugas ................................ ................................ .................... 147 2.1.4.
Tes Formatif ................................ ................................ .......... 147 2.1.5.
Lembar Jawaban Tes Formatif ................................ .............. 148 2.1.6.
Lembar Kerja Peserta Didik ................................ ................... 149 2.1.7.
2.2. Kegiatan Belajar 14 : Penanganan Elektroda SMAW .................. 150
2.2.1. Tujuan Pembelajaran ................................ ............................ 150
2.2.2. Uraian Materi ................................ ................................ ......... 150
2.2.3. Rangkuman ................................ ................................ ........... 163
2.2.4. Tugas ................................ ................................ .................... 163
2.2.5. Tes Formatif ................................ ................................ .......... 164
2.2.6. Lembar Jawaban ................................ ................................ ... 164
2.2.7. Lembar Kerja Peserta Didik ................................ ................... 165

Metoda Pencegahan Distorsi ................................ ................................ ........ 166
1. Deskripsi pembelajaran ................................ ................................ ..... 166
2. Kegiatan Belajar ................................ ................................ ................ 166
2.1. Kegiatan Belajar 15 : Pengertian, Penyebab dan Jenis -jenis
Distorsi ................................ ................................ ................................ ... 166
Tujuan Pembelajaran ................................ ............................ 166 2.1.1.
Uraian Materi ................................ ................................ ......... 166 2.1.2.
Rangkuman ................................ ................................ ........... 172 2.1.3.
d. Tug as ................................ ................................ ................ 172 2.1.4.
Tes Formatif ................................ ................................ .......... 173 2.1.5.  
Lembar Jawaban Tes Formatif ................................ .............. 173 2.1.6.
Lembar Kerja Peserta Didik ................................ ................... 173 2.1.7.

2.2. Kegiatan Belajar 16 : Metoda Pencegahan Distorsi ..................... 174
2.2.1. Tujuan Pembelajaran ................................ ............................ 174
2.2.2. Uraian Materi ................................ ................................ ......... 174
2.2.3. Rangkuman: ................................ ................................ .......... 179
2.2.4. Tugas ................................ ................................ .................... 180
2.2.5. Tes Formatif ................................ ................................ .......... 180
2.2.6. Lembar Jawaban Tes Formatif ................................ .............. 180
2.2.7. Lembar Kerja Peserta Didik ................................ ................... 181

Keselamatan dan Kesehatan Kerja Pengelasan SMAW ............................... 182
1. Deskripsi pembelajaran ................................ ................................ ..... 182
2. Kegiatan Belajar ................................ ................................ ................ 182
2.1. Kegiatan Belajar 17 : Bahaya Busur Las dan
Pencegahannya ................................ ................................ ...................... 182
Tujuan Pembelajaran ................................ ............................ 182 2.1.1.
Uraian Materi ................................ ................................ ......... 182 2.1.2.
Rangku man ................................ ................................ ........... 185 2.1.3.
Tugas ................................ ................................ .................... 186 2.1.4.
Tes Formatif ................................ ................................ .......... 186 2.1.5.
Lembar J awaban Tes Formatif ................................ .............. 186 2.1.6.
Lembar Kerja Peserta Didik ................................ ................... 187 2.1.7.

2.2. Kegiatan Belajar 18 : Bahaya Busur Las, Asap / Gas dan Penceg ahannya ................................ ................................ ...................... 188
2.2.1. Tujuan Pembelajaran ................................ ............................ 188
2.2.2. Uraian Materi ................................ ................................ ......... 188
2.2.3. Rangkuman ................................ ................................ ........... 190
2.2.4. Tugas ................................ ................................ .................... 190
2.2.5. Tes Formatif ................................ ................................ .......... 190
2.2.6. Lembar Jawaban Tes Formatif ................................ .............. 190
2.2.7. Lembar Kerja Peserta Didik ................................ ................... 192
2.3. Kegiatan Belajar 19 : Alat Perlindungan Diri (APD) ...................... 193
2.3.1. Tujuan Pembelajaran ................................ ............................ 193
2.3.2. Uraian Materi ................................ ................................ ......... 193
2.3.3. Rangkuman ................................ ................................ ........... 198
2.3.4. Tugas ................................ ................................ .................... 198  
2.3.5. Tes Formatif ................................ ................................ .......... 198
2.3.6. Lembar Jawaban Tes Formatif ................................ .............. 199
2.3.7. Lembar Kerja Peserta Didik ................................ ................... 200

BAB III Penerapan ................................ ................................ ................................ 201
1. Attitude skills ................................ ................................ ............................. 201
2. Kognitif skills ................................ ................................ ............................. 201
3. Psikomotorik skills ................................ ................................ ..................... 201
4. Produk/benda kerja sesuai kriteria standar ................................ ................ 201
DAFTAR PUSTAKA ................................ ................................ .............................. 202