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Description and Applications |
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HJ900 is an
excellent hard facing electrode for repairing cutter
knives, dies, and crusher jaws which have high alloy
elements such as Mo, W, and V that could improve the
hardness and the toughness. The alloy element could form
carbide after welding so it can support good abrasion
wear-resistant and impact toughness. |
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Guideline in Usage
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1. |
Electrode should be re-dried
at 250∼300℃
for 60 minutes before use. |
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2. |
Slow cooling is
recommended after welding to avoid cracking |
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3. |
Remove dirt such as oil and
dust before welding. |
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Typical
Chemical Composition of Weld Metal（％） |
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C |
Si |
Mn |
Cr |
Mo |
W |
V |
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0.82 |
1.55 |
0.44 |
4.17 |
6.55 |
2.30 |
1.43 |
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Typical Hardness of
Weld Metal |
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As-Welded |
Vickers |
Rockwell (HRC) |
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700∼780 |
60∼63 |
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Size & Recommended Current Range（AC
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3.2 |
4.0 |
5.0 |
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350 |
400 |
450 |
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Current (Amp) |
F |
90~130 |
120~180 |
170~230 |
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