45钢与钨钴硬质合金的钎焊组织及性能
The brazing microstructure and properties of 45 steel and WC-Co cemented carbide
李玉龙，禹业晓
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作者单位：南昌大学机电工程学院
中文关键字：硬质合金；感应钎焊；界面组织；显微硬度；电镀处理
英文关键字：cemented carbide; induction brazing; interfacial microstructutre; microhardness; electroplating process
中文摘要：为实现中碳钢和硬质合金的高效优质钎焊,以Cu-Zn钎料对硬质合金和中碳钢进行了感应钎焊。结果表明，黄铜钎料可以使硬质合金和中碳钢形成良好的钎焊接头；分析了钎焊接头界面组织，接头区由α铜、Fe-Cu-Zn三元反应层构成；维氏硬度测试结果表明，因感应加热淬火效应，焊接后硬质合金显微硬度有显著增加；对感应钎焊的打磨头进行了电镀Cr处理，铬镀层提高了打磨头的耐蚀性和美观程度。
英文摘要：In order to braze the grinding head with high-quality and high-efficiency, induction brazing experiments of cemented carbide and the carbon steel were carried out using the Cu-Zn alloy. Results show a good brazed joint of the cemented carbide and carbon steel can be acquired using the Cu-Zn filler metal; the interface structure are analyzed, the brazed joint is consist of α copper and Fe-Cu-Zn reaction layer; Vickers hardness test results show that after brazing the hardness of cemented carbide has increased significantly because of the quenching effect of induction heating; the brazed grinding head was electroplated with chromium, the corrosion resistance ability was enhanced and the appearance was improved due to the plating.