预应力淬硬磨削复合加工表层硬化试验研究

发布时间：2018-07-06 12:02

本文选题：预应力 + 磨削　；参考：《东北大学学报(自然科学版)》2015年01期

【摘要】：融合了预应力磨削与磨削淬硬技术原理,提出一种预应力淬硬磨削技术方法.以工件淬硬层组织形貌、分布特征、厚度、硬度等为研究对象,开展预应力淬硬磨削复合加工试验研究,并与单纯磨削淬硬试验结果对比分析.结果表明,相同加工条件下,预应力淬硬磨削加工表面在宏观上具有与磨削淬硬加工表面相同的金相组织形貌与分布,组织为亚温淬火组织.与磨削淬硬工艺相比,预应力淬硬磨削工艺对磨削热具有更强的抑制作用;预应力淬硬磨削试件的淬硬层硬度、厚度略小于磨削淬硬试件,但表面硬度可以达到常规完全淬火硬度;该研究工作可为开发预应力淬硬磨削工艺及工件表面质量控制技术提供理论与实验基础.
[Abstract]:Combining the principle of prestress grinding and grinding hardening, a method of prestressing hardening grinding is presented. Based on the microstructure, distribution, thickness and hardness of workpiece quenched layer, the experimental study of prestressing hardening grinding was carried out, and the results were compared with those of pure grinding hardening test. The results show that, under the same processing conditions, the microstructure of pre-stressed quenched grinding surface is the same as that of grinding quenched surface, and the microstructure is subtemperature-quenched microstructure. Compared with the grinding hardening process, the prestressing hardening grinding process has a stronger effect on the grinding heat, and the hardness of the hardened layer of the pre-stressed hardened grinding specimen is slightly less than that of the grinding hardened specimen. However, the surface hardness can reach the conventional complete quenching hardness, which can provide theoretical and experimental basis for the development of prestressing hardening grinding technology and workpiece surface quality control technology.
【作者单位】：东北大学机械工程与自动化学院;沈阳工程学院机械工程系;
【基金】：国家自然科学基金资助项目(51375083) 沈阳市科技计划项目(F13-316-1-59)
【分类号】：TG580.6

【共引文献】