[1]杨勤祥.内衬复合钢管管端封焊到堆焊的改进[J].焊管,2019,42(8):36-42.[doi:10.19291/j.cnki.1001-3938.2019.8.007]
 YANG Qinxiang.Improvement of the Sealing to Surfacing of Lined Steel Pipe End[J].,2019,42(8):36-42.[doi:10.19291/j.cnki.1001-3938.2019.8.007]
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内衬复合钢管管端封焊到堆焊的改进()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
42
期数:
2019年第8期
页码:
36-42
栏目:
工艺与设备
出版日期:
2019-08-28

文章信息/Info

Title:
Improvement of the Sealing to Surfacing of Lined Steel Pipe End
文章编号:
10.19291/j.cnki.1001-3938.2019.8.007
作者:
杨勤祥
上海海隆复合钢管制造有限公司, 上海 200949
Author(s):
YANG Qinxiang
Shanghai Hilong CRA-Lined Steel Pipe Manufacture Co., Ltd., Shanghai 200949
关键词:
复合钢管封焊堆焊焊接材料坡口形式焊缝硬度
Keywords:
lined steel pipe sealing surfacing welding material groove forms weld hardness
分类号:
TG441.2
DOI:
10.19291/j.cnki.1001-3938.2019.8.007
文献标志码:
B
摘要:
为了避免管端封焊引起的刺漏事故,通过采用不同基体及焊接材料、不同坡口形式、不同焊接方法进行焊接试验,并对焊后的管材及焊缝进行硬度测试。测试结果表明,采用不同基体及焊接材料、不同坡口形式、不同焊接方法焊后的硬度值存在很大差异。采用309L Mo材料封焊,无论选用何种坡口形式,均存在硬度超标问题;采用NiCrMo-3材料,无论选用封焊还是堆焊,母材、焊缝和热影响区的硬度都能达到标准要求;堆焊相对于封焊,能够减少焊接缺陷,避免应力集中,适用范围更广且有利于现场施工。建议内衬复合钢管端部处理方式为管端堆焊。
Abstract:
In order to avoid the piercing-caused leakage of pipe end sealing, the welding tests are carried out by using different groove types and welding methods for different base metals and welding materials, and the hardness of welded pipe and weld are tested. The test results show that the hardness of base metals and welding materials with different groove forms and different welding methods are very different. Using 309L Mo for sealing, no matter which groove form is chosen, the hardness exceeds the standard; using NiCrMo-3 material, the hardness of base weld and heat affected zone can meet the standard requirements, no matter it is used for sealing or surfacing, the hardness of base matel, weld and heat affected zone can meet the standard requirements, no matter it is used for sealing or surfacing; compared with sealing, surfacing can reduce welding defects, avoid stress concentration, had wider application and be conducive to site construction. It is suggested that the end of lined composite steel pipe should be surfacing.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-11-28
作者简介:杨勤祥(1965—),大学本科,工程师,长期从事复合钢管的研究及工艺开发工作。
更新日期/Last Update: 2019-09-29