目前,耐磨轴承以多种方式进行生产。但是,所有这些方法中共同的是滚动件材料例如滚珠、滚柱或滚针大部分是以中间坯料的状态得到的。因为热轧工序伴随着层片状珠光体的形成,这种组织结构对后续机械加工或淬火及回火有不利的作用。所以,在成形之前要求进行基本的退火处理。这种基本退火会产生均匀分布的球状渗碳体结构,这种结构具有较好 At present, the wear-resistant bearings in a variety of ways to produce. However, common to all of these methods is that the material of the rolling elements, such as balls, rollers or needles, is mostly obtained as an intermediate material. Because the hot-rolling process is accompanied by the lamellar pearlite formation, this structure is detrimental to subsequent machining or quenching and tempering. Therefore, a basic annealing process is required before forming. This basic annealing will produce a uniform distribution of spherical cementite structure, this structure has better