激光相变硬化工艺参数对5CrNiMo钢温度场的影响  

Effect of optimizing parameters of laser transformation hardening on 5CrNiMo steel Temperature Field

作　　者：孙文强[1] 李云涛[1] 尹博[1] 

机构地区：[1]天津理工大学材料科学与工程学院天津市光电显示材料与器件重点实验室,天津300384

出　　处：《天津理工大学学报》2012年第6期34-38,共5页Journal of Tianjin University of Technology

摘　　要：本文运用ANSYS.有限元软件对5CrNiMo合金工具钢激光相变硬化过程进行数值模拟研究,分析了不同激光工艺参数(激光功率、扫描速度、光斑直径)对激光相变硬化过程温度场的影响,并且预测硬化层深.结果表明,激光表面淬火过程温度场分布经历了非稳态到中间准稳态,然后到最后非稳态三个阶段;温度与激光功率成正比,与光斑直径和扫描速度成反比.工件扫入端与扫出端硬化层分布不均匀,呈现扫入端硬化层浅,扫出端深的特点.The process of laser phase transformation hardening, through 5 CrNiMo steel, was numerically simulated by means of ANSYS software, the effect of different optimizing parameters of laser on the temperature field were analyzed, and the depth of surface hardened layer was predicted. The results showed that the distribution of temperature field experienced three stages in the process of laser transformation hardening, unsteady state, quasi-steady and unsteady state. The temperature field is proportional to the laser power, and inversely proportional to the laser beam diameter and the scan velocity. The hardness layer between the inputoutput area showed an uneven distribution, which presented that the hardness layer of output area was deeper than input area.

关 键 词：5CRNIMO钢 有限元 激光工艺参数 温度场 

分 类 号：TP39[自动化与计算机技术—计算机应用技术] TG156.33[自动化与计算机技术—计算机科学与技术]