陈鑫,王栋,刘昱范.高速磨削对18CrNiMo7-6表面完整性的影响研究[J].表面技术,2018,47(9):259-265.
CHEN Xin,WANG Dong,LIU Yu-fan.Influence of High Speed Grinding on Surface Integrity of 18CrNiMo7-6[J].Surface Technology,2018,47(9):259-265 |
| 高速磨削对18CrNiMo7-6表面完整性的影响研究 |
| Influence of High Speed Grinding on Surface Integrity of 18CrNiMo7-6 |
| 投稿时间：2018-05-27 修订日期：2018-09-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2018.09.034 |
| 中文关键词: 高速磨削 齿轮材料 18CrNiMo7-6 残余应力 表面粗糙度 表面完整性 |
| 英文关键词:high speed grinding gear material 18CrNiMo7-6 residual stress surface roughness surface integrity |
| 基金项目:国家工信部项目 |
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| 中文摘要: |
| 目的 对试件表面粗糙度和残余应力进行分析，为研究高速磨削齿轮材料表面完整性提供试验依据，并对齿轮材料高速磨削工艺进行深入探讨。方法 选择以平面磨削为主要研究方式，根据Salomon理论和高速磨削理论，提出以单因素法对齿轮材料18CrNiMo7-6进行高速磨削工艺试验，试验变量为砂轮线速度、磨削深度和工作台速度，以此得到了高速磨削工艺参数与表面完整性（主要为表面粗糙度和残余应力）之间的关系。结果 齿轮材料18CrNiMo7-6的表面粗糙度随砂轮线速度的增大、磨削深度和工作台速度的降低而得以改善，用三维粗糙度表征法可以准确地评定工件表面形貌。试验得到砂轮线速度对残余应力的影响最大，磨削深度次之，工作台速度的影响较小。除Vs=160 m/s外，经高速磨削的渗碳淬火18CrNiMo7-6试件表面残余压应力值得到提升。结论 通过分析高速磨削对表面完整性的影响，可得到该研究材料的最优磨削参数组合为：Vs=120 m/s，Vw=4 m/min，ap=0.02 mm。在此磨削参数下，试件的残余压应力值最大，将有利于提高试件表面完整性。 |
| 英文摘要: |
| The work aims to analyze surface roughness and residual stress of specimen, provide a test basis for studying high-speed grinding of gear materials on surface integrity of gears, and thoroughly discuss high-speed grinding process of gear material. Plane grinding was selected as main research method, and single factor method was proposed to be used for high speed grinding of 18CrNiMo7-6 according to Salomon theory and high speed grinding theory. Test variables were grinding wheel linear speed, grinding depth and table speed. As a result, relationship between the high-speed grinding process parameters and surface integrity (mainly surface roughness and residual stress) was obtained. The surface roughness of gear material 18CrNiMo7-6 was improved with the increase of grinding wheel linear speed, and decrease of grinding depth and table speed. The surface roughness could be accurately evaluated in three-dimensional roughness method. The influence of the grinding wheel linear speed on residual stress was the most significant, followed by the grinding depth, and the table speed the least. In addition to Vs=160 m/s, compressive residual stress of the specimen surface on 18CrNiMo7-6 receiving high speed grinding was improved. By analyzing the influence of high speed grinding on surface integrity, the optimal grinding parameters combination for the material being studied in the test is Vs=120 m/s, Vw=4 m/min, and ap=0.02 mm, compressive residual stress value of specimen under the grinding parameters is the maximum, which contributes to better surface integrity of specimen. |
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