影响硬质合金与钢基体高频感应钎焊质量的主要因素及改善措施
Key Factors Influencing Welding Quality of Cemented Carbide and Steel Matrix with Hi-frequency Induction Brazing and Its Improvement Measures
万祥明1， 刘建雄1, 吴正宇2， 詹肇麟1
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作者单位：1.昆明理工大学 材料科学与工程学院， 云南 昆明 650093;2.昆明理工大学 理学院,云南 昆明 650093
中文关键字：硬质合金； 润湿； 残余应力； η相
英文关键字：cemented carbide; wetting; residual stress; η phase
中文摘要：钎焊是硬质合金与钢基体结合的主要方法，而大批量生产时主要以高频感应钎焊为主。焊接过程中钎料润湿与填充不充分、焊接残余应力过大以及高脆性物质η相的生成是影响焊接接头质量的主要因素。本文主要阐述了这三种因素产生的原因与解决措施。
英文摘要： Brazing is the major method of connecting cemented carbider and steel matrix, and high-frequency induction brazing was mainly used for volume-produce. The major factors influencing the quality of welded point include the inadequate wetting and padding of soldering, the excessive welding residual stress and the generation of brittle material η phase in the process of welding. Therefore, the causes of the three factors mentioned above were explained and some recommended measures were put forward.