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以螺纹转接头注塑模为例,通过应用Moldflow与Fluent创建不同工况下的注塑模型,模拟动态模温模具的加热和冷却,分析流体类别及流速对模具温度变化的影响,获取动态模温注塑热响应曲线。结果显示:冷却流体流速对模温的影响有明显的区间差异性;模具型腔表面温度变化幅度比成型件内大,加热介质为热水时更显著;介质流速快的平均模温比流速慢的高,其中传热油特别明显;同一介质加热温度越高,加热及冷却时的模温变化幅度越大;加热介质对模温变化影响存在滞后性,其中传热油更明显。
Taking the mold of thread adapter as an example, the injection molds under different working conditions were established by using Moldflow and Fluent to simulate the heating and cooling of dynamic mold. The influence of fluid type and flow rate on the mold temperature was analyzed. The dynamic mold temperature Thermal response curve. The results show that the influence of the cooling fluid flow rate on the mold temperature is obviously different. The variation of the surface temperature of the mold cavity is larger than that of the molded part, and the heating medium is more obvious when the heating medium is hot water. Of which heat transfer oil is particularly obvious; the same medium heating temperature is higher, the heating and cooling the greater the change in the mold temperature; heating medium on the impact of temperature changes there is a lag, in which the heat transfer oil is more obvious.