锻压技术

大长径比不等径筒形件旋压成形试验研究

英文标题：Experimental research on spinning forming of large slenderness ratio cylinders with different diameters

作者：袁玉军夏琴香肖刚锋杨琛

分类号：

出版年,卷(期):页码：2014,39(4):42-46

摘要：

针对大长径比不等径筒形件采用拼焊或车削预制坯后再旋压成形时存在的工艺复杂、成形精度低、产品质量差及生产效率低等缺陷，提出采用板坯卷焊成管坯后，再经过旋压成形的方法来实现其完整近净成形。对零件进行工艺分析后，确定了零件的旋压成形工艺和流动旋压方式；通过试验获得了双旋轮等距旋压道次减薄率的合理范围；采用流动旋压、旋压缩径及旋压翻边等工序，成功地加工出了高精度、大长径比不等径筒形件，使其材料利用率提高了78%以上。

A spinning method based on coil welding tubular blank was put forward to overcome the limitation of complex process, low precision, poor quality and low production efficiency deformed by welding or spinning based on machining tubular blank, and the near net shape forming of large slenderness ratio cylinders with different diameters was then realized. The spinning forming process and flow spinning pattern were obtained through the technology analysis of parts. The reasonable range of reduction ratio per pass during isometric spinning with double rollers was determined through experimental research. The qualified large slenderness ratio cylinders with different diameters was produced based on the compound spinning forming methods, including flow spinning, necking spinning and flanging spinning，and the material utilization rises over 78%.

基金项目：

华南理工大学国家金属材料近净成形工程技术开发中心开放基金资助项目（2012001）

袁玉军（1990-），男，硕士研究生

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