LIU Zhaoyang, LI Bo, LI Juanli

(College of Mechanical and Vehicle Engineering, Shanxi Provincial Key Laboratory of Coal Mining Equipment,Taiyuan University of Technology, Taiyuan 030024，China)

Abstract: In order to solve the wear and tear of the middle trough of scraper conveyer and improving the service life by certain technological treatment. A simulation model of ML-100 abrasive wear reciprocating testing machine was designed, which is similar to the working principle of scraper conveyor. Based on Plackett-Burman screening method and response surface method, the best parameters of repair process of surfacing stripe method for middle trough of scraper conveyor were explored. Comparison test with the smooth middle plate was conducted. The results show that under the experimental conditions, the optimal surfacing fringe process parameter combination are quadratic function of shape, width of 1 mm, height of 0.42 mm, the angle of 120 ° and the spacing of 9 mm, in which, the shape, height and spacing are significant influencing factors. The contour of stripe convex body is smooth, the wear is mainly concentrated on the bead welding stripe, and the wear is uniform. In addition, the stress of the middle plate sample is uniform, and the fluctuation of the upper sample is small, which can reduce the wear caused by the vibration of the scraper to a certain extent, and improve the service life of the middle trough. The process parameters of the bead welding stripe of the middle trough can further improve the repair process of the middle trough.

Keywords: middle trough; response surface method; surfacing; process parameters

中图分类号： TD528.3

文献标志码：A

文章编号：1008-5548(2021)05-0027-11

DOI:10.13732/j.issn.1008-5548.2021.05.004

收稿日期： 2021-04-20，修回日期：2021-05-12，在线出版时间：2021-08-16 17:17。

基金项目：国家自然科学基金项目，编号：51804207；国家自然科学基金项目，编号：51875386。

第一作者简介：刘朝阳(1994—)，男，硕士研究生，研究方向为现代机械设计理论。E-mail: liuhong8434@qq.com。

通信作者简介：李娟莉(1979—)，女，博士，教授，硕士生导师，研究方向为机械系统故障监测与诊断。E-mail: lijuanli@tyut.edu.cn。