用有限元软件对非调质钢48MnV在各种磨削参数下的磨削强化过程进行了有限元分析，预测了磨削强化层的深度；试验测定了非调质钢48MnV磨削强化层的显微硬度，分析了磨削强化层的显微组织，并用硬度与金相两种方法测出了磨削强化层深度随磨削深度的变化规律。结果表明：硬度法和金相法所得磨削强化层深度测定值接近，试验结果准确；磨前强化层深度在磨削深度为0．2mm时达到最大值，有限元预测磨削强化层深度与试验结果相对误差在11．9％～18％之间，在可接受的范围内。
The grinding hardening process for 48MnV non-quenched and tempered steel with different griding parameters was analyzed using the finite element software to predict the depth of the grinding-hardening layer. The microhardness and microstructure of the layer at the surface of non-quenched and tempered steel 48MnV were studied, and the regulation of layer depth changing with grinding depth was also analyzed according to microhardness and microstructure. The results showed that both values of layer depth tested through microhardness and microstructure were quite close,and the test results were accurate. The grinding-hardening layer depth reached maximum when the grinding depth was 0. 2 ram, Although the predicted grinding-hardening layer depth by finite element simulation differed from the experimental results with relative error from 11.9% to 18%,which still could be accepted.
参考文献
| [1] | T. Brockhoff .Grind-hardening: a comprehensive view[J].CIRP Annals,1999(1):255-260. |
| [2] | 葛培琪,孙建国,刘镇昌.磨削淬硬--磨削加工与表面淬火集成制造技术[J].工具技术,2001(01):7-10. |
| [3] | X. X. Yu;W. S. Lau .A finite-element analysis of residual stress in stretch grinding[J].Journal of Materials Processing Technology,1999(1):13-22. |
| [4] | Zarudi I.;Zhang LC. .Mechanical property improvement of quenchable steel by grinding[J].Journal of Materials Science,2002(18):3935-3943. |
| [5] | 王文静,李强,缪龙秀,谢绒娜,王润志,胡振山,迟建波.内燃机车曲轴中频淬火过程的数值模拟[J].内燃机学报,2002(03):278-282. |
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