刘朝阳， 李 博， 李娟莉

（太原理工大学机械与运载工程学院； 煤矿综采装备山西省重点试验室， 山西太原030024）

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。

摘要：为了解决刮板输送机中部槽的磨损以及通过工艺处理提高其使用寿命的问题，设计与刮板输送机工作原理相似的ML-100型磨粒磨损往复试验机仿真模型，基于Plackett-Burman筛选法和响应面法，探究刮板输送机中部槽堆焊条纹法修复工艺的最佳参数;并与光滑中板进行耐磨性对比试验研究。结果表明:试验条件下，最优堆焊条纹工艺参数组合为形貌二次函数，宽度为1 mm，高度为0.42 mm，角度为120°，间距为9 mm，其中形貌、高度和间距为显著性影响因素;条纹凸体轮廓光滑，磨损主要集中在堆焊条纹上，且磨损均匀;堆焊条纹中板试样受力均匀，且上试样波动较小，可从一定程度上减少刮板的振动所引起的磨损，提高中部槽使用寿命;中部槽的堆焊条纹工艺参数可进一步改善中部槽修复工艺。

关键词：中部槽；响应面法；堆焊；工艺参数

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

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