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一、概述目前,国内外许多航空发动机减速器的齿轮和齿轮轴,由于同一零件各部位的服役条件不同,因而要求两种渗碳深度。通常在齿形面上较浅,在滚动面(轴承跑道上)较深。为了满足一个零件有两种不同的渗碳深度,目前采用的几种方法是①将零件同时渗碳,,获得深的碳层。然后,通过磨削来满足浅层部位的层深要求。显然,磨削后,这些部位的表面碳浓度和硬度都会降低;另外,大量磨削不仅费工,而且可能产生磨削裂纹。②首先,对要求较深渗层的
I. Overview At present, many domestic and international gear reducer gear and gear shaft, due to different parts of the same parts of the service conditions, which require two kinds of carburizing depth. It is usually shallow on the toothed surface and deeper on the rolling surface (bearing runway). In order to satisfy two different carburizing depths for one part, several methods are currently used to carburize the part at the same time and obtain a deep carbon layer. Then, by grinding to meet the shallow depth requirements of the site. Obviously, after grinding, the surface carbon concentration and hardness of these parts will be reduced; In addition, a large number of grinding is not only labor-intensive, and may produce grinding cracks. ② First of all, for the deeper layers of the request