基于锻件基体的增材制造工艺参数对温度场的影响

Influence of additive manufacturing process parameters on temperature field based on forged substrate

为了研究激光功率、扫描速度和层间停留时间对增材制造(Additive Manufacturing,AM)温度场的影响,利用ANSYS有限元软件建立了在3种不同结构锻件基体(凸台、平台和凹槽)上增材制造的复合成形模型,揭示了增材制造工艺参数与温度分布之间的关联。结果表明,对于在不同结构锻件基体上增材制造的构件而言,当增材制造工艺参数改变时,其温度、温度振荡范围和熔池尺寸的变化规律一致。但是,不同构件上的温度和熔池尺寸不同,在凹槽锻件基体上增材制造时的温度最低而熔池尺寸最大。另外,当增材制造工艺参数(激光功率、扫描速度和层间停留时间)改变时,带凸台锻件基体构件的温度场所受的影响最为显著。

To study the influence of laser power,scanning speed and interlayer dwell time on the temperature field of additive manufacturing(AM),composite forming models fabricated by AM based on forged substrates with three different structures(boss,platform and groove)were established using ANSYS finite element software,and the relationship between AM process parameters and temperature distribution was revealed.The results show that for components fabricated by AM based on forged substrates with different structures,when the AM process parameters are changed,the change laws of temperature,temperature oscillation range and molten pool size are consistent.However,the temperature and the molten pool size of different components are different.When AM is carried out on the groove forged substrate,the temperature is the lowest and the molten pool size is the largest.In addition,when the AM process parameters(laser power,scanning speed and interlayer dwell time)are changed,the effect on temperature field of the component fabricated by AM based on the boss forged substrate is the most significant.