[1]楊勤祥.內襯復合鋼管管端封焊到堆焊的改進[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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內襯復合鋼管管端封焊到堆焊的改進()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
42
期數:
2019年第8期
頁碼:
36-42
欄目:
工藝與設備
出版日期:
2019-08-28

文章信息/Info

Title:
Improvement of the Sealing to Surfacing of Lined Steel Pipe End
文章編號:
10.19291/j.cnki.1001-3938.2019.8.007
作者:
楊勤祥
上海海隆復合鋼管制造有限公司, 上海 200949
Author(s):
YANG Qinxiang
Shanghai Hilong CRA-Lined Steel Pipe Manufacture Co., Ltd., Shanghai 200949
關鍵詞:
復合鋼管封焊堆焊焊接材料坡口形式焊縫硬度
Keywords:
lined steel pipe sealing surfacing welding material groove forms weld hardness
分類號:
TG441.2
DOI:
10.19291/j.cnki.1001-3938.2019.8.007
文獻標志碼:
B
摘要:
為了避免管端封焊引起的刺漏事故,通過采用不同基體及焊接材料、不同坡口形式、不同焊接方法進行焊接試驗,并對焊后的管材及焊縫進行硬度測試。測試結果表明,采用不同基體及焊接材料、不同坡口形式、不同焊接方法焊后的硬度值存在很大差異。采用309L Mo材料封焊,無論選用何種坡口形式,均存在硬度超標問題;采用NiCrMo-3材料,無論選用封焊還是堆焊,母材、焊縫和熱影響區的硬度都能達到標準要求;堆焊相對于封焊,能夠減少焊接缺陷,避免應力集中,適用范圍更廣且有利于現場施工。建議內襯復合鋼管端部處理方式為管端堆焊。
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.

參考文獻/References:

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備注/Memo

備注/Memo:
收稿日期:2018-11-28
作者簡介:楊勤祥(1965—),大學本科,工程師,長期從事復合鋼管的研究及工藝開發工作。
更新日期/Last Update: 2019-09-29
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