Optimization of the Die Forging Parameters of 21-4N Heat-Resistant Steel by Processing Maps

被引:2
作者
Huang, Xiaomin [1 ]
Zang, Yong [1 ]
Guan, Ben [1 ]
Ji, Hongchao [1 ,2 ]
机构
[1] Univ Sci & Technol Beijing, Sch Mech Engn, 30 Xueyuan Rd Haidian Dist, Beijing 100083, Peoples R China
[2] North China Univ Sci & Technol, Coll Mech Engn, 21 Bohai Rd, Tangshan 063210, Hebei, Peoples R China
基金
中国国家自然科学基金; 中国博士后科学基金;
关键词
21-4N; Processing maps; Valve; Die forging; Numerical modeling; HOT DEFORMATION-BEHAVIOR; NIMONIC; 80A; CONSTITUTIVE MODEL; EXHAUST VALVE; ALLOY; MICROSTRUCTURE; WORKABILITY; EXTRUSION; EVOLUTION; 4CR9SI2;
D O I
10.1007/s12666-021-02346-y
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The valve is one of the important parts of the engine, and 21-4N is the main material of the engine valve. In the die forging process, accurate process parameters are required to ensure that the engine valve parts that meet the requirements can be obtained. In this paper, the thermal simulation experiments are conducted to obtain stress-strain data of 21-4N heat-resistant steel at a deformation temperature of 1273-1453 K and a deformation rate of 0.01-10 s(-1). And hot processing maps are used to optimize the die forging process of 21-4N. The numerical simulation of valve die forging based on the optimized parameters obtained from the thermal processing maps is conducted, and the forming rules are studied. The influence law of die forging temperature, die forging speed, and friction coefficient is analyzed and finally verified in valve processing enterprises.
引用
收藏
页码:2713 / 2728
页数:16
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