【摘要】 研究了纵向交流脉冲磁场电流对等离子弧堆焊层金属组织及性能影响,利用光学金相、X射线衍射、显微硬度和磨损试验等方法对不同脉冲磁场电流作用下的堆焊试样的硬度、耐磨性及组织进行分析。研究发现,在适当的脉冲磁场电流作用下,可以增加堆焊层金属中硬质相的数量,控制硬质相的生长方向,提高等离子弧堆焊层的硬度和耐磨性。更多还原

【Abstract】 The influence of longitudinal alternative pulsed magnetic field current on microstructure and properties of plasma arc surfacing layer was researched,and the hardness,wear resistance and microstructure of surfacing layer with different pulsed magnetic field current were systematically analyzed by using optical microscope,X-ray diffraction,wear test and microscopic hardness test.The results indicated that the proper pulsed magnetic field current can increase the amount of hardening phase in deposited layer,control the growth direction of hardening phase and improve the hardness and wear resistance of the surfacing layer.更多还原