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多功能的激光器又有一个用途,即:铸铁凸轮轴的重熔硬化。当凸轮轴仅旋转一周的同时,把一支激光束聚焦在凸轮宽度方向上的一条线上,即将表面熔化到一定深度。在随即开始的冷却过程中,熔化区域凝固并转变成一种硬(HV_(0.5)575)的细晶粒莱氏体显微组织,显著提高了其耐磨性,以抵抗凸轮和滚轮间的赫兹按触应力和摩擦。德国Mauser—Werke Oberndorf公司软件开发工程师W·Rompp指出:这种
Versatile lasers have one more purpose: reflow hardening of cast iron camshafts. When the camshaft rotates only one revolution, a laser beam is focused on a line in the width direction of the cam to melt the surface to a certain depth. During the immediate cooling, the molten area solidifies and transforms into a hard (HV_ (0.5) 575) fine grain ledeburite microstructure that significantly increases its wear resistance against the Hertz between the cam and the roller Press the contact stress and friction. W · Rompp, a software development engineer at Mauser-Werke Oberndorf in Germany, points out that this