摘要
为了提高牙骨凿刃口硬度,延长使用寿命,利用ANSYS参数化设计在420B不锈钢牙骨凿表面进行激光淬火数值模拟,在此基础上进行激光淬火试验,并用光学显微镜、显微硬度计对刃口激光淬火后的显微组织和硬度进行分析。结果表明:在激光功率500 W,扫描速度960 mm/min时,仿真模型模拟得出淬火表面最高温度约1070℃。此工艺参数下淬火后刃口截面最高硬度达到57.1 HRC,平均硬度达到51.0 HRC,淬火效果较好。
In order to improve the hardness of cutting edge of the dental chisel and prolong service life,laser quenching test on 420B stainless steel dental chisel was carried out based on the numerical simulation by using ANSYS parameterized design,and the microstructure and hardness were analyzed by means of OM and hardness test.The results show that when the laser power is 500 W and the scanning speed is 960 mm/min,the simulation model shows that the maximum temperature of the quenched surface is about 1070℃.Under this process parameter,the highest hardness of the cutting edge in cross section after quenching is 57.1 HRC,and the average hardness is 51.0 HRC,and the quenching effect is preferable.
作者
郭士锐
张仕豪
车江宁
崔陆军
郑博
Guo Shirui;Zhang Shihao;Che Jiangning;Cui Lujun;Zheng Bo(School of Mechanical and Electrical Engineering,Zhongyuan University of Technology,Zhengzhou Henan 450007,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2021年第4期147-151,共5页
Heat Treatment of Metals
基金
河南省高等学校重点科研项目(20A460033,20A460031)
河南省高等学校现代制造装备与仪器重点学科开放实验室资助项目(2017MEI002,2015MEI004)
中国纺织工业联合会科技指导性项目(2016085)
中原工学院专业学位研究生课程教学案例库项目(ALK201907)。
关键词
420B不锈钢
数值模拟
激光淬火
硬度
显微组织
420B stainless steel
numerical simulation
laser quenching
hardness
microstructure
