挤压
材料科学
过程(计算)
焊接
机械
机械工程
常量(计算机编程)
冶金
工程类
计算机科学
物理
程序设计语言
操作系统
作者
J. W. Gebhard,André Schulze,A. Erman Tekkaya
出处
期刊:Lecture notes in mechanical engineering
日期:2023-08-23
卷期号:: 450-458
标识
DOI:10.1007/978-3-031-41023-9_46
摘要
Continuous hot extrusion enables a constant profile velocity throughout all stages of the process, including the dead cycle time when reloading a billet. The processes direct and indirect hot extrusion are combined with a stationary or a movable valve. Both variants have different influences on the process and the profile properties. The movable and the stationary valve are directly compared with numerical and experimental methods. Continuous extrusion experiments are conducted using the method of similarity with a model material. The results show that a movable valve secures the functionality safely and a stationary valve reduces the length of the machine, the required ram forces and the amount of weld seams. The stationary valve also leads to a reduced profile temperature, which allows enhanced profile speeds and increases the productivity of the continuous extrusion process.
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