锻压技术

深孔带中间法兰锻件的锻造

英文标题：Forging of the forging workpiece with deep hole and middle flange

作者：景屹峰

单位：无锡东海锻造有限公司

分类号：TG316

出版年,卷(期):页码：2017,42(1):1-4

摘要：

深孔带中间法兰锻件由于孔深、壁薄且中间部位带法兰，因此锻造成形难度极大。设计了一种浮动模架，利用弹簧驱动上浮动模座，在螺旋压力机上通过两道成形工步生产深孔带中间法兰锻件。制定了成形工艺，第1工步预锻局部成形，第2工步终锻采用浮动模座热挤压深孔成形。分析了弹簧设计对锻造工艺的影响，选择了合理的弹簧压缩变形量。采用设计的工艺和设备生产该锻件并进行质量检验，结果表明，生产出的产品外形尺寸和粗加工后各尺寸符合图纸规定要求，纤维流线连续流畅，晶粒度达到7级左右，力学性能参数满足用户要求。

The forging workpiece with deep hole and middle flange is difficult to produce because of its deep hole, thin lateral wall and with flange in middle. A kind of floating die holder was designed to drive the upper floating die holder by springs, and the forging workpiece with deep hole and middle flange was produced by two-step forming on the screw press. Then, the forming process was designed, such as the first step was local forming by preforging and the second step was hot extrusion deep hole forming by finish forging with float die holder. Therefore, the influence of spring design on forging process was analyzed, and a reasonable compression value of the spring was chosen. Furthermore, a practical forging workpiece was produced by the optimized process and devices, and their qualities were inspected. The results show that the overall dimensions and sizes after rough machining of products meet all requirements of the engineering drawing, the flow-lines are continuous and proper, the grain size is up to around seven grade, and the mechanical properties meet the requirements of user.

基金项目：

国外客户委托开发项目（20150110）

景屹峰（1960-），男，学士，工程师 E-mail：13606195347@163.com

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