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冷噴焊在溫度250以下硬面處理，可使鐵心不變形，不易斷裂，可增加耐磨耗特性，硬度可達HRC65氣孔率10%
The treatment of cold soldering can be conducted under 250C, the iron core will not be transformed as not easy to break,and also the hardness also can reach HRC65
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熱噴焊在溫度400以上硬面處理，硬度可達HRC75氣孔率0%
The temperature of thermal soldering can reach 400, the hardness can reach HRC75
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