【摘要】 冷弯异型管在角部存在应力集中现象 ,有时存在裂纹倾向。通过对沈阳东洋异型管有限公司一异型管产品—— 8字形管产生裂纹的原因进行分析 ,确定了解决方案 :1修理轧辊 ,加大有开裂倾向的内陷角 ;2选用塑性更好的板材。实践证明 ,该措施能有效地防止管角角部裂纹的产生更多还原

【Abstract】 The situation of stress focused in corner occurred in nonstandard cool-bend pipe,and sometimes cracks trend existed.Through the analysis of crack cause of"8"shape pipe--one of nonstandard cool-bend pipe made in Shenyang Dongyang Nonstandard Pipe Company,The answer was found:①repairing roller and enlarging the concave part;②choosing materials with better plastic properties.The Practice proved that the methods can effectively prevent the corner crack in pipe corner.更多还原