
Properties of Weld Metals
Authored by NOOR KPM-Guru
Education
12th Grade
Used 1+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah yang dimaksudkan dengan logam kimpalan?
Logam asas yang tidak dicairkan
Logam yang terbentuk daripada gas pelindung
Logam yang mencair dan membeku semasa proses kimpalan
Logam yang terdapat dalam zon HAZ
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Struktur mikro logam kimpalan sangat dipengaruhi oleh:
Ketebalan logam asas
Kelajuan penyejukan dan komposisi kimia
Saiz elektrod sahaja
Warna permukaan bahan
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah struktur mikro yang boleh menyebabkan logam kimpalan menjadi rapuh?
Ferrit
Martensit
Austenit
Perlit
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah sifat utama yang perlu ada pada logam kimpalan?
Kelembutan yang tinggi
Rapuh dan keras
Kekuatan dan keliatan yang sesuai
Kadar kakisan tinggi
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Salah satu faktor yang mempengaruhi sifat logam kimpalan ialah:
Warna nyalaan obor
Kelajuan angin persekitaran
Input haba semasa kimpalan
Kadar kelembapan bahan asas
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah kesan jika input haba terlalu tinggi semasa kimpalan?
Menghasilkan struktur yang sangat kuat
Meningkatkan kadar penyejukan
Menyebabkan pertumbuhan bijian kasar dan penurunan keliatan
Menghasilkan lebih banyak ferrit
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah kesan porosity (liang gas) dalam logam kimpalan?
Meningkatkan keliatan
Meningkatkan kekerasan
Melemahkan kekuatan dan ketahanan beban berulang
Mengurangkan suhu lebur
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