摘要
选用钎料HL105真空钎焊WC-Co硬质合金与低碳钢,系统地研究了焊接温度对硬质合金/钢钎焊接头组织和性能的影响。研究表明:用钎料HL105成功地焊接了硬质合金和低碳钢;随着钎焊温度的升高,钎料流动性和润湿性增加,同时,钎料成分元素挥发,焊缝宽度变窄,基体晶粒组织长大,硬质合金/钢接头的抗拉强度先增加后降低。当钎焊温度为980℃,硬质合金/钢接头达到的最佳抗拉强度为263.9 MPa。
Abstraet.WC-Co cemented carbide was joined with low carbon steel using HL105 solders by vacuum brazing. The influences of welding temperature on the microstructure and properties of WC-Co/steel joints were investigated systematically. The results show that WC-Co and low carbon steel are successfully joined by using solder HL105. With the increase of brazing temperature, the flowability and wettability of solder HL105 increase. Simultaneously, the elements of solder evaporates, the width of the seam welding decreases and the grains of WC-Co and steel grow. The tensile strength of the welded joints increases ？rstly and then decreases with the brazing temperature increasing. The maximum tensile strength of the welded joint is 263.9 MPa at 980℃. Key words： cemented carbide; vacuum brazing; welding temperature; tensile strength; microstructure
出处
《热加工工艺》
CSCD
北大核心
2013年第17期37-39,共3页
Hot Working Technology
基金
德阳市科技支撑计划项目(2012ZZ040-3)
关键词
硬质合金
真空钎焊
焊接温度
抗拉强度
显微组织
cemented carbide
vacuum brazing
welding temperature
tensile strength
microstructure
作者简介
张光明（1972-），男，四川安县人，博士生，研究方向：材料加工及模拟：E—mail：zgmgary@163．com
