论文部分内容阅读
拖链轮工作表面受链轨节的撞击及摩擦很易磨损,使用寿命很低,一般均用不到一个大修周期。寿命低的根本原因是由于铸件材质的影响:工作表面及轮缘冷铸深度不够;表面硬度低等。图纸中技术条件规定:1．材料为HT21－40; 2．与链轨节接触表面及凸维工作部分冷铸深度大于7毫米。我厂是采用下列工艺方法铸造拖链轮的,常年生产,质量稳定。现介绍如下:
Drag chain wheel work surface by the link section of the collision and friction is easy to wear and tear, low service life, generally less than one overhaul cycle. Low life expectancy is the fundamental reason for the impact of the casting material: the work surface and rim chill depth is not enough; the surface hardness is low. Technical requirements in the drawings: 1. Material is HT21-40; 2. The contact surface with the chain link and convex part of the working part of the depth of the chilled cast greater than 7 mm. Our factory is using the following process casting drag chain wheel, perennial production, quality and stability. Now introduced as follows: