锻压技术

细长薄壁发动机金属壳体精密制造技术

英文标题：Precision manufacturing technology on slender thin-walled engine metal shells

作者：王北平韩冬王兆楠张岩肖立军

分类号：TG156

出版年,卷(期):页码：2022,47(12):200-205

摘要：

阐述了实现细长薄壁发动机金属壳体精密制造形/性一体化控制的两种主要技术途径，描述了形变热处理和形变时效强化技术方案加工金属壳体的技术路线及金属材料强化机理，研究获得了F154钢、30Cr3钢、30CrMnSiA钢、T250马氏体时效钢壳体旋压热处理工艺的关键参数。应用570～610 ℃的坯料调质预强化回火温度和75%以上的旋压变形率，可实现F154钢、30CrMnSi钢、30Cr3钢壳体形/性一体化控制目标，形变强化对强度的贡献率约为20%～30%；T250钢按固溶温度为（820±10）℃、时效温度为（520±20）℃进行热处理可获得抗拉强度大于等于1700 MPa的发动机金属壳体。

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)℃.

基金项目：

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

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