浙江仙居抽水蓄能电站780MPa级钢岔管制造质量控制

Manufacturing Quality Control of 780MPa Grade Steel Bifur cation Pipes in Zhejiang Xianju Pumped-storage Power Station

钢岔管的制造质量控制对保证岔管较好的性能起着至关重要的作用,本文概要介绍仙居抽水蓄能电站780MPa级钢岔管焊接工艺评定试验、坡口设计、瓦片成形、整体与装配、部件焊接、组合焊缝焊接残余应力测试与消除、整体正式装配、水压试验等环节的关键技术措施和质量控制要点,并根据相应的规范标准对各工程环节得到的质量进行了评价。

Manufacturing quality control of steel bifurcation pipes plays a vital role in ensuring that the steel bifurcation pipes performance better. This paper provides a overview of the key technical measures and mian points of quality contol of welding procedure qualification test, bevel design, tile molding, overall preassembled, parts welding, combination weld residual stress testing and elimination, overall formal assembly and hydrostatic test of 780 MPa grade steel bifurcation pipes in Xianju pumped-storage power station. Moreover, each engineering process has been evaluated according to the corresponding quality standards.