Transactions of Materials and Heat Treatment

Title：Advanced finishing technology for bimetal temperature compensation sheet

Authors： Cao Lilin Li Yang

Unit： AECC Xi′an Engine Control Co. Ltd.

KeyWords： bimetal temperature compensation sheet finishing process formal composite finishing die geometrical tolerance small allowance cutting

ClassificationCode：TG305

year,vol(issue):pagenumber：2020,45(3):37-40

Abstract：

The bimetal temperature compensation sheet for aviation is required to be able to reliably perform temperature compensation, and the tolerances in internal and external positions as well as the cross-section roughness requirements are high. Therefore, starting from the analysis of structural characteristics and stamping process of the bimetal temperature compensation sheet and combining production requirements, the finishing process plan for small allowance cutting was proposed, and the finishing process parameter design method was analyzed in detail. Then, the advantages and disadvantages of the structures for inverted and formal composite finishing dies were analyzed, and the structure of formal composite finishing die was selected in the end, which completed the finishing at one time with small enough margin to ensure the roughness requirement of section. At the same time, the three-sided positioning was changed to six-point positioning to solve the operation difficulty and positioning plate deformation problems caused by the squeeze of the waste material between the positioning plate and the workpiece. The production proves that the process and the structure of die achieve good results, which not only greatly improves the production efficiency, but also significantly improves the product qualification rate.

Funds：

曹立林（1970-），女，学士，高级工程师 E-mail：735613732@qq.com 通讯作者：李杨（1986-），男，学士，工程师 E-mail：584185446@qq.com

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