一、刨齿光洁度在厂中存在的问题 20 Cr低碳合金钢,在调质后刨齿,齿表面光洁度很差。以武重厂加工的齿轮(m=3;z=28,a=20°)为例,工艺上规定预先调质热处理;硬度的HB200-230,在车间现有设各情况下,光洁度一般只能达 4- 5,如图1所示。齿面拉沟划道非常严重,并呈现出节状鳞刺,成为 First, the gear tooth finish There are problems in the factory 20 Cr low-carbon alloy steel, after quenching and shaving teeth, tooth surface finish is poor. For example, the gear (m = 3; z = 28, a = 20 °) processed by WuWei Plant is pre-tempered and heat-treated according to the technology. The hardness of HB200-230 is generally only Up to 4-5, as shown in Figure 1. Tooth surface pull groove is very serious, and showed a nodular scale, become