Research of Wax Injection Molding Precision and Simulation of Nozzle Transition Section

Huang Mingji; Wu Geng

doi:10.15980/j.tzzz.2017.09.011

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Research of Wax Injection Molding Precision and Simulation of Nozzle Transition Section
Vol. 37, Issue 9, Pages: 971-975(2017)
Published： 2017 ，
DOI： 10.15980/j.tzzz.2017.09.011

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[1]黄明吉,吴庚.蜡模喷射成形尺寸精度研究与喷嘴过渡段模拟[J].特种铸造及有色合金,2017,37(09):971-975.

Huang Mingji, Wu Geng. Research of Wax Injection Molding Precision and Simulation of Nozzle Transition Section. [J]. Special Casting & Nonferrous Alloys 37(9):971-975(2017)
[1]黄明吉,吴庚.蜡模喷射成形尺寸精度研究与喷嘴过渡段模拟[J].特种铸造及有色合金,2017,37(09):971-975. DOI： 10.15980/j.tzzz.2017.09.011.

Huang Mingji, Wu Geng. Research of Wax Injection Molding Precision and Simulation of Nozzle Transition Section. [J]. Special Casting & Nonferrous Alloys 37(9):971-975(2017) DOI： 10.15980/j.tzzz.2017.09.011.

摘要

采用三维打印技术（3DP）和液滴按需喷射技术（DOD）

以铸造蜡为对象

采用仿真与试验相结合的方法

以喷嘴温度、成形速度、供料压力为研究因素

研究蜡模的打印精度。首先通过正交试验

获得最优工艺参数组合

然后进行喷射模型理论分析

并对压电喷射阀喷嘴处的流体进行仿真分析和喷射试验

了解工艺参数的影响机理。最后制造样件

通过三维扫描获得其尺寸精度

证明了此种工艺制造蜡模的可行性。

Abstract

Through adopting 3D printing and Drop-On demand injection

taking the casting wax as the material

printing precision of the wax pattern was investigated to understand effects of wax spray temperature

molding speed and feed pressure based on numerical simulation and experiment.The optimum combination of process parameters was presented by orthogonal test.Then the spraying model theory was analyzed.Meanwhile

the fluid at the nozzle of the piezoelectric jet valve was simulated and analyzed

and influence of the process parameters was determined.The dimension precision of the wax pattern was obtained by 3D scanning

which verified manufacture feasibility of wax pattern.