Deformation Control of Pure Molybdenum Thin-walled Rings

LING Liyue; CHENG Dehua; ZHANG Xianguo; WANG Yongkang

doi:10.3969/j.issn.1674-6457.2025.09.020

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Journal of Netshape Forming Engineering ›› 2025, Vol. 17 ›› Issue (9) : 204-211. DOI: 10.3969/j.issn.1674-6457.2025.09.020

Refractory Metal Forming

Deformation Control of Pure Molybdenum Thin-walled Rings

LING Liyue^{1, 2,*}, CHENG Dehua¹, ZHANG Xianguo¹, WANG Yongkang¹

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Abstract

The work aims to study the cutting clamping force and cutting technology of pure molybdenum thin-walled rings, find the best processing technology, and improve the pass rate of cutting. The processing technology of pure molybdenum thin-walled rings was analyzed, and the key reasons for non-conformity were confirmed. Aiming at the problem that the thin wall is likely to deform, special tooling was designed. Finite element simulation was used to analyze the clamping force, and the hydraulic value of different hydraulic chucks was compared to determine the best hydraulic value to reduce the cutting deformation. Different cutting tools and cutting methods were compared to improve the pass rate of cutting. Batch processing experiments were carried out to verify the effectiveness of process optimization. The results showed that the greater the clamping force, the greater the internal stress of the workpiece, and the more likely to occur deformation. The special tool supporting cutting could effectively reduce the internal stress and deformation of the workpiece during cutting, and effectively improve the pass rate of the coaxiality of the thin-walled ring. Through the use of electric machining wire cutting, the medium wire cutting could be replaced by lathe cutting, which could significantly improve the pass rate of cutting and ensure the processing efficiency. After the optimization of the machining process, the overall average pass rate of the parts increases from 65.33% to 92.00%, and the optimization effect is remarkable, which provides a process reference for the processing of pure molybdenum thin-walled parts.

Key words

pure molybdenum / thin-walled parts / deformation / finite element analysis / wire cutting

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LING Liyue, CHENG Dehua, ZHANG Xianguo, WANG Yongkang. Deformation Control of Pure Molybdenum Thin-walled Rings[J]. Journal of Netshape Forming Engineering. 2025, 17(9): 204-211 https://doi.org/10.3969/j.issn.1674-6457.2025.09.020

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