摘要
为了提高液压支架立柱母材用27SiMn钢表面熔覆层的综合性能,对其元素组成做了适当优化,制得了单层厚度2 mm以上的熔覆层,并通过实验测试了其摩擦性能。研究结果表明:熔覆层硬度均值为631.3 HV,相对基体提高了近2倍,实现了显著的表面强化作用。提高载荷后,熔覆层磨损体积上升幅度相对载荷变化幅度更小,形成了相反变化的磨损率。试样表面组织氧化磨损,造成塑性切削而产生犁沟。
In order to improve the comprehensive performance of the surface cladding layer of 27SiMn steel used for the base material of hydraulic support column,a single layer with thickness of more than 2 mm was prepared by proper optimization of its element composition,and its friction performance was tested by experimental means.The results show that the average hardness of the cladding layer is 631.3 HV,which is nearly 2 times higher than that of the matrix,and the surface strengthening effect is realized significantly.After increasing the load,the increase of the cladding wear volume is smaller than the change of the load,resulting in the opposite change of the wear rate.The surface tissue of the sample is oxidized and worn,resulting in plastic cutting and furrow.
作者
卢易枫
Lu Yifeng(School of Automotive Engineering,Henan Vocational College of Industry and Trade,Zhengzhou Henan 450052,China)
出处
《山西冶金》
CAS
2023年第8期5-6,17,共3页
Shanxi Metallurgy
基金
河南省高等学校重点科研项目(项目编号:22A470005)。
