摘要
掘进机截齿堆焊修复要求熔深浅、稀释率小,等离子弧堆焊就具备这一特性。本试验通过对Q235钢板进行Ti(C,N)增强镍基粉末涂层等离子弧堆焊耐磨强化处理,分析堆焊层的金相组织、显微硬度,并对堆焊层和基体材料进行摩擦磨损试验,对比分析经等离子弧堆焊处理后材料的耐磨性,并观察表面形貌,分析磨损机理。以此应用到掘进机截齿的堆焊和修复上,从而防止齿尖过早磨钝和硬质合金头脱落,提高截齿的使用寿命。
The plasma arc surfacing has shallow penetration and small dilution rate for surfacing and reparing of cutting pick. Q235 steel plate was strengthened with Ti（C,N） particle reinforcing the coating of nickel base powder by plasma arc powder surfacing. The microstructure of the welding transition layer and microhardness were analyzed. The friction and wear experiments were carried out on the surfacing layer and base material, then the wear resistance after plasma arc surfacing treatment was analyzed, the surface morphology was observed, and he wear mechanism was analyzed t. If the technology is applied to the surfacing and reparing of cutting pick, it can prevent the tooth tip premature blunt and the loss of hard alloy head, so as to improve the service life of cutting tooth.
出处
《热加工工艺》
CSCD
北大核心
2014年第19期29-32,共4页
Hot Working Technology
基金
徐州工程学院2013年大学生创新创业基金项目(201325)
江苏省大型工程装备检测与控制重点建设实验室开放课题(JSKLEDC201308)
徐州市一般科技计划项目(XF13C047)
