电火花表面强化过程中的_阳极粘连_现象.pdf

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焊接 2005(8) · 73 ·
电火花表面强化过程中的“阳极粘连”现象
中国农业机械化科学研究院表面工程技术研究所(北京市 100083) 汪瑞军程家龙黄小鸥
哈尔滨工业大学现代焊接国家重点试验室(150001) 常志龙何鹏钱乙余
摘要通过对 TC1 合金表面强化 WC - Co 过程中的“阳极粘连”现象研究,揭示出电极旋转式电火花表
面强化过程的实质是一种混合冶金过程。由于存在“阳极粘连”现象,电火花强化过程中两极间的放电过程
具有不规律交变放电的特征。上述结论为解释 TC1 合金表面 WC - Co 电火花强化层中存在 TiC 等新相提供
了理论依据。
关键词: 电火花表面强化阳极粘连 WC - Co 电极 TC1 合金
PHENOMENA OF ANODE - CONGLUTINATING IN THE COURSE OF
ELECTROSPARK SURFACE STRENGTHENING
Chinese Academy Agriculture Mechanization on Sciences Wang Ruijun , Cheng Jialong , Huang Xiaoou
State Key Lab of Advanced Welding
Production Technology , HIT Chang Zhilong , He Peng , Qian Yiyu
Abstract The phenomena of“anode - conglutinating”during depositing of WC - Co on TC1 titanium alloy by electrospark
surface strengthening was investigated in present paper. It indicates that the essence of rotating - type electrospark surface strength
ening is a mixed metallurgy process. Alternating discharge between the two electrodes occurs in the course of electrospark surface
strengthening , because the existence of anode - conglutinating. It gives the new evidence why some new phases such as TiC are
generated in the strengthening layer.
Key words : electrospark surface strengthening , anode - conglutinating , WC - Co electrode , TC1 alloy
题,采用电极旋转式电火花表面强化设备在 TC1 合金
0 引言
表面强化 WC - Co 材料,重点研究强化过程中电极放
电极旋转式电火花表面强化技术是利用电极与基电端头的“阳极粘连”现象。结果