Transactions of Materials and Heat Treatment

Title：Precision manufacturing technology on slender thin-walled engine metal shells

Authors： Wang Beiping Han Dong Wang Zhaonan Zhang Yan Xiao Lijun

Unit： Xi′an Aerospace Power Machinery Co. Ltd.

KeyWords： metal shell precision manufacturing shape/property integrated control spinning thermomechanical treatment deformation strengthening

ClassificationCode：TG156

year,vol(issue):pagenumber：2022,47(12):200-205

Abstract：

Two main technical approaches to realize the integration control of shape and property in the precision manufacturing of slender thin-walled engine metal shells were expounded，the technical route of processing metal shells by deformation heat treatment and deformation aging strengthening technology schemes and the strengthening mechanism of metal materials were described, and the key parameters of spinning heat treatment process for F154 steel, 30Cr3 steel, 30CrMnSiA steel and T250 martensite aged steel shells were obtained. Then, the goal of intergrated shape/property control for F154 steel, 30CrMnSiA steel and 30Cr3 steel shells was realized by applying the billet quenching and tempering pre-strengthening tempering temperature of 570-610 ℃ and the spinning deformation rate of more than 75%, and the contribution rate of deformation strengthening to strength was about 20%-30%. Furthermore, the engine metal shell with the tensile strength greater than or equal to 1700 MPa was obtained by T250 steel after heat treatment at the solution temperature of (820±10)℃ and the aging temperature of (520±20)℃.

Funds：

王北平（1970-），男，学士，高级工程师 E-mail：15102926157@139.com

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