关于锅筒集箱上管接头的链接焊缝金相试件的探讨

当焊件为合金钢、额定工作压力大于或等于3.8 MPa时,其锅筒、集箱上与管接头的链接焊缝,应将管接头分为壁厚大于6mm和小于或等于6 mm两种,对每种管接头,按1/200焊制一个试件,并沿检查试件中心线切开作金相试件.本文从历年<蒸汽锅炉安全技术监察规程>版本的修改情况和焊接方法、焊接工艺水平的不断提高和更有效的无损检...

Discussion of Metallographic Specimen on Link Weld of Drum Header Upper Tube Joint

When welding parts are alloy steels,rated pressure is equal to or greater than 3.8 Mpa,its pot cylinder,setting the case with tin-in of weld,should divide wall thickness of pipe connector into two kinds: greater than 6mm and less or equal to 6mm,for each pipe joints,as per 1/200 soldering a specimen,and metallographic specimen is made along centerline of the test specimen in incision.This article from past Supervision and Regulation of Steam Boiler Safety and Technique version revision situation and weldin...