What materials are usually used for scraper conveyor sprockets?

SprocketThe component is the key part of the power drive of the scraper conveyor, and its wear resistance and strength determine the working efficiency of the entire fully mechanized mining face.The wear resistance and strength are determined by the material and heat treatment method.

由链轮的工作环境可知,链轮和链条摩擦主要发生在链窝处,因此链窝处的淬火硬度和淬硬层深度至关重要。对于42CrMo和40CrNiMoA材质的链轮,两种材质齿内面及链窝轮廓淬火硬度都能达到HRC50-55。其中42CrMo材质一般淬硬层深度可达到8mm左右,40CrNiMoA材质的淬硬层深度可达到12mm左右。

Compared with 40CrMo, the 42CrNiMoA material adds Ni element, which improves its own plasticity and toughness, and improves the corrosion performance. When used in combination with Cr and Mo, it can improve the thermal strength and hardenability, and has good high-temperature oxidation resistance and oxidation resistance. Therefore, it is more suitable for the fully mechanized mining face with harsh environment and large coal mining volume.There are different requirements for sprocket main engine manufacturers of different specifications. The main engine manufacturers determine how to select sprocket materials according to the size of the coal mining volume of the fully mechanized mining face in different mining areas and the mine production environment, so as to meet the mine production requirements.