UNS N08825合金复合管环焊缝根焊关键质量验收准则探讨  

Discussion on the key acceptance criteria for the root girth weld ofUNS N08825 alloy lined or clad pipes

作　　者：李科 唐力 陶科宇 李天雷 邱蜀峰 任艳辉 陈勇彬 姜放 LI Ke;TANG Li;TAO Keyu;LI Tianlei;QIU Shufeng;REN Yanhui;CHEN Yongbin;JIANG Fang(CPECC Southwest Company,Chengdu,Sichuan,610041,China;PetroChina Southwest Oil and Gas Field Company Northeast Sichuan Gas District,Dazhou,Sichuan,635000,China)

机构地区：[1]中国石油工程建设有限公司西南分公司,四川成都610041 [2]中国石油天然气股份有限公司西南油气田分公司川东北气矿,四川达州635000

出　　处：《天然气与石油》2023年第6期8-13,共6页Natural Gas and Oil

基　　金：中国石油集团工程股份有限公司科研项目“双金属复合管选材、焊接与无损检测技术深化研究”(2022ZYGC-12-02);中国石油工程建设有限公司西南分公司科研项目“高含硫气田825合金双金属复合管应用及元素硫沉积防治技术研究”(FKY2021-208)。

摘　　要：基于UNS N08825合金复合管实际工程实施情况,识别了环焊缝关键位置根焊处存在的主要缺陷形式。对比分析了国内外相关标准及实际工程中环焊缝的质量控制要求,基于工程合于使用、安全可靠的原则,在SY/T 7464—2020《耐腐蚀合金双金属复合管焊接及无损检测技术标准》基础上,对UNS N08825合金复合管环焊缝质量验收准则进行了探讨,推荐了根焊处内凹、气孔、内表面颜色以及错边等主要缺陷的合格验收指标,可直接指导工程建设。Based on the actual engineering construction of UNS N08825 alloy lined or clad pipes,the main defects in root girth weld have been identified in this paper.The quality control requirements of girth welds in the relevant local and international standards and actual engineering projects are compared and analyzed,based on the principle that the engineering is fit for purpose,safe and reliable.This paper discusses the NDT acceptance criteria of the girth weld of UNS N08825 alloy lined or clad pipes on the basis of SY/T 7464—2020 Internal Lined or Clad Corrosion Resistant Alloy Pipeline Welding and Inspection Specification industry standard,and recommends the acceptance criteria of the main defects of root weld,such as internal concavity,porosity,inner surface discoloration and misalignment.These recommendations can be directly used as guidance for other engineering projects.

关 键 词：UNS N08825合金 环焊缝 根焊 内凹 气孔 颜色 错边 

分 类 号：TE973.3[石油与天然气工程—石油机械设备]