【摘要】 对于材质为20 G的缩口管,在缩口后有的管子的缩口直段产生了沿管子轴向的纵向裂纹。通过试验分析其产生的原因以及确定其解决办法。更多还原

【Abstract】 There will be longitudinal cracks along the straight parts of the wage tube for 20 G tube after waging.In this article the cause of crack and the solution to this problem is introduced through test and analysis.更多还原