焊管2012，Vol.35Issue(9)：69-73,5.
JCOE焊管椭圆度和管径误差的控制
Control Ovality and Diameter Tolerance for JCOE Pipe
汪超 1武占芳 1金博 1钱勇 1葛玉宏 1朱敏 2王卫华1
作者信息
- 1. 渤海装备南京巨龙钢管有限公司,南京210061
- 2. 渤海装备巨龙钢管有限公司,河北青县062658
- 折叠
摘要
Abstract
Through analysis on process characteristics of JCOE two-side submerged-arc welded pipe, including raw material performance, forming, tack welding , as well as the effect of expansion on ovality and diameter tolerance. The results indicated that when the ovality of pipe end is not more than 0.0120, the ovality index increases obviously, the one-pass conformity rate is enhanced from 85.4% to 98.46%; the diameter (D≥610 mm) tolerance of pipe end is controlled at ±1.3 mm, the accuracy of pipe end diameter is improved greatly, and one-pass conformity rate is enhanced from 90.56% to 99.47%. In the end, it pointed out the adjustment approach for steel pipe ovality, improved methods for controlling pipe end diameter tolerance, the reason for common problems and improvement measures, which delivers significant value for improving ovality and the accuracy of diameter.关键词
JCOE双面埋弧焊管/椭圆度/管径误差/改进措施Key words
JCOE two-side submerged-arc welded pipe/ ovality/ diameter tolerance/ improvement measures分类
能源科技引用本文复制引用
汪超,武占芳,金博,钱勇,葛玉宏,朱敏,王卫华..JCOE焊管椭圆度和管径误差的控制[J].焊管,2012,35(9):69-73,5.
