D36-Z35钢两种焊接方法接头CTOD断裂韧度试验与分析  

Test and Analysis of the Welding Joint CTOD of Steel D36-Z35 Welded by Two Welding Methods

作　　者：刘维[1] 曹军[1] 丁文斌[1] 张良锋[1] 杨双羊 

机构地区：[1]海洋石油工程股份有限公司,天津塘沽300451

出　　处：《中国造船》2008年第A02期310-315,共6页Shipbuilding of China

摘　　要：依据英国BS7448断裂韧性试验标准，对番禺30-1深海导管架项目广泛应用的超大尺寸焊接接头的低温CTOD断裂韧度进行了探讨。对采用手工电弧焊（SMAW）和药芯焊丝气体保护焊（FCAW）工艺施焊的大尺寸板厚的海洋石油平台焊接接头试样进行了CTOD试验。分别测试了0℃两种工艺下焊缝金属和热影响区的CTOD断裂韧性，对试验结果进行了分析讨论。试验表明，除药芯焊丝气体保护焊热影响区接头两个试样数据无效外，其余试件均满足挪威船级社DNV规定的最小特征CTOD为0．15mm的要求。这说明95mm的D36-Z35钢板手工电弧焊和药芯焊丝气体保护焊焊接接头可以在不进行焊后热处理的情况下使用。试验结果为免除这种板厚焊接接头的焊后热处理提供了依据，这对于海洋平台大型焊接结构来说，可以大大降低制造成本，缩短生产周期，具有巨大的经济意义。According to the British standard BS7448, CTOD tests of thick plate welding joint of PY30-1 jacket are carried out and discussed. CTOD tests of SMAW and FCAW thick plate welding joint and HAZ are carried out on 0 ℃. Results of tests show that all of the specimens satisfy DNV standard that the minimum CTOD should be greater than 0.15mm but two data of HAZ of FCAW are invalid. The results explain that SMAW and FCAW welding joint of 95mm D36-Z35 steel can be used without heat treating. The results provide the evidence that these joints can be used without heat treating. For platform and large-sized welding structure this can make the cost smaller, shorten the periodic and make more economic.

关 键 词：英国BS7448标准 厚板焊接接头 裂纹尖端张开位移(CTOD) 断裂韧度 深海海洋平台导 管架 

分 类 号：TG407[金属学及工艺—焊接] TG44