Key Technology and Application of Digital Twin Modeling for Deformation Control of Investment Casting
Received date: 2022-05-31
Revised date: 2022-12-04
Online published: 2023-01-13
Supported by
National Key Research and Development Program of China(2022YFB3706800);National Key Research and Development Program of China(2020YFB1710100);National Science and Technology Major Project of China(2017-Ⅶ-0008-0102);National Science and Technology Major Project of China(J2019-VI-0004-0117);National Natural Science Foundation of China(51821001);National Natural Science Foundation of China(52090042);Zhejiang Provincial Key Research and Development Program of China(2020C01056);Zhejiang Provincial Key Research and Development Program of China(2021C01157);Zhejiang Provincial Key Research and Development Program of China(2022C01147)
Investment casting processes are controlled separately for its complex casting system, resulting in the dimensional out of tolerance. A calculation method for node displacement transfer is proposed based on the node normal vector and the nearest neighbor points in investment casting; the relationship between injection parameters, dimensional deviation in injected wax pattern, and casting solidification is studied, which provides a data model for digital twin. The digital twin is applied to the antideformation design and process optimization under a multiprocess for ring-to-ring casting. In the design stage, the geometric model of the mold cavity is designed via reverse deformation, and the error between the simulation results of the casting after the antideformation design and the target geometric is < 0.04 mm. In the casting, the optimal control of the subsequent process is performed according to the dimensional deviation of the previous process.
GUAN Bang , WANG Donghong , MA Hongbo , SHU Da , DING Zhengyi , CUI Jiayu , SUN Baode . Key Technology and Application of Digital Twin Modeling for Deformation Control of Investment Casting[J]. Acta Metall Sin, 2024 , 60(4) : 548 -558 . DOI: 10.11900/0412.1961.2022.00263
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