【摘要】 研究了纵向间歇交变磁场占空比对等离子弧堆焊金属组织及性能的影响。测试分析了不同磁场占空比下堆焊层的硬度、耐磨性及其显微组织。结果表明,适当的磁场占空比能有效地增加堆焊金属中硬质相的数量,控制硬质相的生长方向,提高堆焊层金属的硬度和耐磨性。更多还原

【Abstract】 The influence of duty ratio of longitudinal intermittent alternative magnetic field on microstructure and properties of plasma arc surfacing layer was researched. The hardness, wear resistance and microstructure of surfacing layer with different duty ratios of magnetic field were tested and analyzed. The results indicate that proper duty ratio of magnetic field can increase the amount of hardening phase in overlay deposit, control the growth direction of hardening phase and improve the hardness and wear resistance of the surfacing overlay.更多还原