论文部分内容阅读
珠光体合金铸铁机械零件由于表面硬度不高在服役过程中因磨损而失效的情况屡见不鲜。为提高铸铁件的使用寿命，采用高能密度方法对新零件进行表面强化或对失效的零件进行修复在国内外已经倍受重视。激光熔凝处理技术正是在此背景下迅速发展起来的。经激光熔凝处理的合金铸铁件
Pearlite alloy cast iron mechanical parts due to the surface hardness is not high in the service process due to wear and tear failure is not uncommon. In order to improve the service life of cast iron parts, the use of high-energy density method to strengthen the surface of new parts or to repair the failed parts has drawn great attention at home and abroad. It is against this background that laser fusion processing technology has developed rapidly. Laser fused alloy cast iron