【摘要】 以 ＨＴ２００为试验材料，用钨极氩弧对其表面进行了局部重熔硬化，得出了相关工艺参数对重熔处 理后表层性能的影响，同时与铸铁表面激光硬化进行了对比。结果表明：铸铁表面氩弧硬化是有 效提高其耐磨性，发挥自身潜力，降低成本的一项新工艺。更多还原

【Abstract】 The wear resistibility of gray cast iron HT200 is improved by employing inert gas tungsten arc remelting and fast solidified, the effect of current and arc moving rate on the chilling layer properties are studied. And it is compared with laser hardening. The results show that Tungsten inert Gas Arc remelting can improve the resistance to abrasion of cast iron and it is much better and cheaper technique than others.更多还原