[1]刘治华,张天增,杨孟俭,等.超声滚压工艺参数对18CrNiMo7-6齿轮钢表面质量性能分析[J].郑州大学学报(工学版),2020,41(02):47-52.
点击复制

超声滚压工艺参数对18CrNiMo7-6齿轮钢表面质量性能分析()
分享到:

《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
41
期数:
2020年02期
页码:
47-52
栏目:
出版日期:
2020-05-31

文章信息/Info

Title:
Performance Analysis of Surface Modification Layer of 18CrNiMo7-6 Gear Steel Treated by Ultrasonic Rolling
作者:
刘治华张天增杨孟俭戴骐隆张银霞
文献标志码:
A
摘要:
研究了 18CrNiMo7-6齿轮钢超声滚压后表面变质层的性能和加工工艺。 分别运用三维表面形 貌测量系统、显微硬度计、超景深三维显微系统和高速大功率 X 射线残余应力分析仪等工具观察试样加 工前后的表面变质层变化,并采用单因素试验分析试验数据,研究超声滚压工艺参数对试样表面变质层 的影响。 结果表明:经过超声滚压加工,表面粗糙度由未经超声滚压处理的 3.003μm 减少到0.468 μm,显著的加工硬化在该材料表面形成,表面显微硬度从最开始的 360.9HV 升高到442.9HV,升高了 22.7%,高硬度层达到了300 μm;平整的表面在超声滚压加工后出现;在距离表面 40 μm 处残余压应力 形成峰值,其值约为-790.97 MPa。 超声滚压技术显著提高了材料的变质层性能。
Abstract:
The performance and processing technology of surface modification layer of 18CrNiMo7-6 gear steelafter ultrasonic rolling were studied. The measurement instructions, such as 3D surface topography measure-ment system , microhardness instrument , super depth of field 3D microscopy system and high power X-ray dif-fractometer were used respectively, to observe the variation of surface modification layer of the sample. Theeffects of ultrasonic rolling process parameters on surface modification layer were studied by single factor test.The results showed that after ultrasonic rolling, the surface roughness of the specimen is decreased from theuntreated 3. 003um to 0. 468um. Significant work hardening formed on the surface of the material after ultra-sonic rolling. Surface microhardness increased by 22. T% from 360. 9 HV to442. 9 HV , and the high hardness layer reached 300 um. Flat surface appeared after ultrasonic rolling. The maximum residual compressive stressoccured at a distance of 40 um from the surface, which was about -790. 97 MPa. Ultrasonic rolling technology significantly improveed the properties of the modification layer.
更新日期/Last Update: 2020-05-30