YG8硬质合金与DC53钢真空钎焊工艺组织及性能研究  

Research on Vacuum Brazing Process and Properties of YG8 Hard Alloy and DC53 Steel

作　　者：龚正朋[1] 王娟[2] 吴艳[1] Gong Zhengpeng;Wang Juan;Wu Yan

机构地区：[1]嘉兴南洋职业技术学院,314000 [2]山东大学

出　　处：《工程机械》2020年第2期57-62,I0003,共6页Construction Machinery and Equipment

基　　金：嘉兴市科技计划项目(2017AY13001)。

摘　　要：针对YG8硬质合金与DC53钢环形构件真空钎焊工艺,选取常用的BNi_2镍合金、S201铜合金和纯铜箔3种钎料进行真空钎焊试验,通过DHV-1000数显式显微硬度计对钎焊缝及其附近组织进行硬度测试,采用XJP-6A型金相显微镜获取试样结合界面状态和组织形态。试验表明:3种试验钎料中,S201铜合金钎料最佳。又针对S201铜合金钎料选取0.1 mm、0.15 mm和0.20 mm的焊接间隙,对0.15 mm的焊接间隙设置3个不同温度峰值(1080℃、1100℃和1140℃)及1100℃温度峰值分别保温30 min和20 min真空钎焊试验,试验结果表明,YG8与DC53环形构件真空钎焊工艺参数推荐采用:S201铜合金钎料、0.15 mm焊接间隙、1100℃加热温度峰值及20 min保温时间。In view of YG8 hard alloy brazing with DC53 steel it has to select BNi2 nickel alloy, S201 copper alloy and pure copper foil, 3 types of metal, to carry out a vacuum brazing test while hardness testing the braze seam and the surrounding tissue with a data display DHV-1000 microhardness instrument, before identifying interface state and tissue formation with XJP-6A metallographic microscope. Tests show that among the 3 types of metal, the S201 copper alloy and its test result shows that YG8 brazing with DC53 ring type work piece can be recommended to use S201 copper alloy in 0.15 mm clearance at 1 100 ℃ peak heating, and insulated for 20 min.

关 键 词：YG8硬质合金 DC53钢 真空钎焊 工艺参数 

分 类 号：TG454[金属学及工艺—焊接]