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镦锻管料需要非常谨慎。在计算或调整中,稍有疏忽就会产生折纹造成废品。60年 CA—30轴管内孔折纹与近来 EQ240轴管内孔又出现折纹,从根本上分析,都属镦粗工步的计算和调整不当引起的。因此,把管料傲粗问题提出来分析研究是有必要的。为解决 CA—30轴管折纹,我曾于81年初在“管料局部镦粗过程的研究”一文中找到一种计算管料镦粗的方法,既简便又实用,用于 CA—30轴管上,折纹消除了,用于 EQ240轴管设计上,也没有出现折纹,但当采用机械手操作时,用西德设计的模具,同一个 EQ240轴管由于工步计算
Upsetting tubes requires great care. In the calculation or adjustment, a slight negligence will produce wrinkles resulting in waste. 60 years CA-30 shaft bore hole fold and the recent EQ240 shaft tube bore again appear creases, from the fundamental analysis, are upsetting step calculation and adjustment caused by improper. Therefore, it is necessary to put forward the analysis of pipe material proud proud rough. In order to solve the buckling of the CA-30 shaft tube, I found a method to calculate the tube upsetting in the article “Research of the tube upsetting process” in early 81, which is simple and practical for the CA-30 shaft Tube, the crease eliminated, for the EQ240 shaft design, there is no crease, but when using manipulator operation, with West Germany designed mold, the same EQ240 shaft tube calculated as a result of step