[1]曹国富.小直径厚壁高频焊管成型孔型改进[J].焊管,2010,33(10):70-73.[doi:1001-3938(2010)10-0070-04]
　CAO Guo-fu.Pass Improvement for High Frequency Welded(HFW) Pipe with Small Diameter and Thick Wall[J].,2010,33(10):70-73.[doi:1001-3938(2010)10-0070-04]
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小直径厚壁高频焊管成型孔型改进
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
33
期数:
2010年第10期
页码:
70-73
栏目:
经验交流
出版日期:
2010-10-28

文章信息/Info

Title:
Pass Improvement for High Frequency Welded(HFW) Pipe with Small Diameter and Thick Wall
文章编号:
1001-3938(2010)10-0070-04
作者:
曹国富
（佛山市万乘实业有限公司，广东 佛山 528316）
Author(s):
CAO Guo-fu
(Guangdong Foshan Wansheng Industry Co.,Ltd.,Foshan 528316,Guangdong,China)
关键词:
小直径厚壁高频焊管; 变形盲区; 壁厚V形口; 边缘双半径孔型
Keywords:
small diameter and thick wall HFW pipe; deformation blind area; V notch at wall thickness; double radius pass on pipe edge
分类号:
TG335.75
DOI:
1001-3938(2010)10-0070-04
文献标志码:
B
摘要:
形成高频焊管成型缝壁厚V形口的根本原因是：变形管坯对接边边缘存在不可避免的变形盲区，且管壁越厚，管径越小，壁厚V形口越明显，对焊缝强度的负面影响越大。因此，小直径厚壁管的变形盲区相对更宽，造成管坯边缘成型质量不良，对焊缝强度的负面影响非常显著。采用边缘双半径孔型设计能够在变形盲区存在的情况下，实现待焊管坯对接面平行对接，通过变形工艺的改进，保证了小直径厚壁管的焊缝强度。
Abstract:
The original reason of generating V notch of HFW pipe with longitudinal weld lies in:unavoidable deformation blind area exists in butt edge welding of deformed pipe blank,the heavier of pipe wall is,the smaller of pipe diameter is,and the shape of V notch is more obvious,the greater negative effect on weld strength.So the deformation blind area of small diameter and thick wall welded pipe is relative wider;this will cause to bad forming quality of pipe blank edge,and obvious negative effect on weld strength.It pointed out that under existing blind area,adopting double radius pass on pipe edge design can realize parallel butt welding of pipe blank which will be welded,through improving deformation process,weld strength of small diameter and thick wall welded pipe can be ensured.

参考文献/References:

［1］赵亚涛.高频厚壁管焊接质量的影响因素［J］.焊管,2006（6）：85-89.
［2］李宏.直缝埋弧焊钢管生产线预弯工艺［J］.焊管,2006（1）:55-57.
［3］介升旗.ERW焊管压扁试验性能评价与提高［J］.焊管,2005（5）:77-80.
［4］曹国富.V形区管坯边缘的控制［J］.焊管,1993（1）:45-47.
［5］〖曹国富.试论直缝焊管管坯边缘双半径成型［J］.钢管,1997（4）:22-27.

备注/Memo

备注/Memo:
作者简介：曹国富（1957—）男,工程师,长期从事焊管孔型设计、工艺研究和现场管理工作，发表论文30余篇。
收稿日期：2010-03-29
更新日期/Last Update: