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针对光杠在实际工作中的特点,提出用激光螺旋扫描淬火的方法提高光杠的耐磨性能。通过利用Abaqus软件对光杠进行三维实体建模,细化作用面,细分作用时间步长等操作,对光杠圆周表面激光螺旋扫描淬火的温度场瞬态形成进行仿真分析。通过对仿真所得结果进行分析发现,螺旋扫描时的螺距对后道激光光斑扫描淬火时所形成的温度场有一定的影响。揭示了前后道激光螺旋扫描淬火光道之间的温度场耦合是造成后道淬火光道激光淬火时所形成温度场变高的主要原因。并且由于螺距的不同,影响的程度也不同。本研究为利用Abaqus软件对光杠圆周表面激光螺旋扫描淬火温度场仿真分析提供了指导,同时对圆柱圆周表面激光螺旋扫描淬火工艺应用于实际生产有很大的帮助。
Aiming at the characteristics of light bar in practical work, the method of laser spiral scanning quenching is proposed to improve the wear resistance of light bar. Abaqus software was used to simulate the transient formation of the temperature field of laser spiral scanning quenching on the peripheral surface of the light bar by three-dimensional solid modeling of the light bar, thinning of the active surface, subdivision time step and so on. By analyzing the simulation results, it is found that the helical pitch of helical scanning has a certain influence on the temperature field formed by laser scanning and quenching. It is revealed that the temperature field coupling between the front and back laser helical scanning and quenching tracks is the main reason that the temperature field resulting from the laser quenching of the back quenching track becomes higher. And due to the different pitch, the extent of the impact is different. This study provides a guideline for using Abaqus software to simulate and analyze the temperature field of laser spiral scanning quenching on the circumferential surface of the light bar, and is helpful for the actual production of the laser spiral scanning quenching process on the cylindrical circumferential surface.