塔里木大学学报2025，Vol.37Issue(4)：70-81,12.DOI:10.3969/j.issn.1009-0568.2025.04.009
LK500高速犁犁尖堆焊层磨损性能试验研究
Experimental study on the wear performance of LK500 high-speed plough tip surfacing layer
摘要
Abstract
The utilisation of high-speed ploughs has become a prevalent practice in the context of deep ploughing operations within the Alar region of Xinjiang.The condition of the soil in contact with the plough body has a direct impact on its lifespan and the effectiveness of soil tilling.The aim of this study was to investigate the effects of abrasive wear on the tip of a high-speed plough in a field setting.The changes in wear amount,length,width,thickness,edge angle,microhardness and microscopic wear surface of the tip of the plough were observed during the ploughing process.The area of the ploughed land was 35,70,105 and 140 ha,and the degree of penetration of the wear surface was calculatedto analyse the microscopic wear mechanism with a view to prolonging the service life of the tip from the perspective of design and material.The findings indicated that with an increase in the ploughing area,the overlay layer was progressively removed,and the dimensional alterations in wear length,width,thickness and edge angle were predominantly concentrated at the tip.The number of spalling pits exhibited a gradual decline,while the number of furrows demonstrated a gradual increase from the edge of the plough tip to its midpoint.The Dp value of the overlay layer and the substrate is less than 0.2,indicating that the microscopic wear mechanism is micro-ploughing.As the ploughing area increases,the depth and width of the cladding layer cracks demonstrate a rising trend.The interface between the substrate and cladding layer exerts a certain hindering effect on the cracks,showing cracks on the cladding layer undergo staggered extension while those on the interface undergo transverse extension.These accumulating extensions ultimately result in the cladding layer falling off in a stepwise manner under the impact loading,and the fall-off area gradually extending from the edge to the middle.关键词
高速犁/堆焊层/磨料磨损/田间实验Key words
high-speed plough/surfacing layer/abrasive wear/field experiment分类
农业科技引用本文复制引用
李明健,郭琦,栗伟杰,姚强,韩晓蕊,罗树丽..LK500高速犁犁尖堆焊层磨损性能试验研究[J].塔里木大学学报,2025,37(4):70-81,12.基金项目
2022年度兵团指导性科技计划项目(2022ZD093) （2022ZD093）
