采煤机用薄壁薄片件淬火加工工艺优化

Optimization of Quenching Processing Process of Thin-walled Sheet Part Used in Shearer

采煤机中采用一种薄壁薄片件,其具有外圆及厚度精度要求高、热处理淬火硬度高的特点,但薄壁薄片件在淬火过程中会使其加工精度要求无法保证。通过对工艺进行优化,将单件淬火改为多件一起进行淬火,在达到淬火硬度的同时,保证零件变形量较小及后序加工精度要求。该方案保证了热处理硬度高的薄壁薄片耐磨垫的加工精度要求。同时,新刀具、新工艺的应用使生产成本大大降低,并提高了生产效率,值得推广应用。

A thin-walled sheet part is used in the shearer,it has the characteristics of high accuracy requirements for external circular and thickness,high heat treatment quenching hardness.However,the machining accuracy requirements for thin-welled sheet part cannot be guaranteed during quenching process.By optimizing the process,the single quenching is changed to multiple pieces for quenching together.While achieving the hardness,the parts are less deformation and the post-sequential processing accuracy requirements.This scheme ensures the processing accuracy requirements of thin-walled sheet wear-resistant pad with high heat treatment hardness.At the same time,the application of new tools and new processes has greatly reduced production costs and improved production efficiency,which is worth promoting and applied.