钨铜粉末轧制的有限元模拟研究

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Abstract The Drucker-Prager/Cap model was used to describe the rolling deformation of tungsten-copper powders,and the corresponding finite element model was established. The effects of processing paramenters, including roll gap, rolling speed and rolling temperature on the relative density of sheets were studied using the finite element analysis software (Abaqus). The simulation results were compared with the experimental ones. The results show that in the process of tungsten-copper alloy powder rolling, the larger the gap between rolls, the smaller the relative density of the rolled sheet and the more uniform the density distribution. With increasing rolling speed, the relative density of the sheet decreases, the low density area of the edge decreases, and the uniformity of the density distribution increases. The higher the rolling temperature is, the higher the relative density of the sheet is and the better the powder fluidity is. Comparing the simulation results with the experimental results, the maximum error is 4.1%, which indicates the reliability of the finite element model.

Key words： tungsten-copper powder rolling finite element simulation processing paramenters relative density

Received: 29 March 2019 Published: 14 November 2019

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TG146.1

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	Articles by authors
	CUI Liqun
	HAN Shengli
	SHI Qi
	LI Daren
	HU Jianzhao
	LIU Zuyan

Cite this article:

CUI Liqun,HAN Shengli,SHI Qi, et al. Finite element simulation study on the process of tungsten-copper powder rolling[J]. Materials Science and Engineering of Powder Metallurgy, 2019, 24(5): 406-412.

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http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2019/V24/I5/406

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