小型锅炉锅筒开裂原因分析  

CRACKING ANALYSIS OF SMALL SIZED BOILER CANISTER

作　　者：郭海霞[1] 岳灿甫[1] 杨之勇[1] 

机构地区：[1]洛阳船舶材料研究所,洛阳471039

出　　处：《理化检验（物理分册）》2008年第5期255-257,共3页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：采用化学成分分析,宏、微观组织检验,断口观察和腐蚀产物分析等方法对SUS304奥氏体不锈钢锅炉的锅筒开裂进行了分析。结果表明,环境中存在硫和氯等元素,造成在锅筒板与顶盖的焊接处发生腐蚀而形成腐蚀坑并萌生裂纹,在各种应力作用下裂纹不断扩展,最终导致开裂。Through analysis of cracking causes in boiler canister of SUS304 （0Cr18Ni9） austenitic stainless steels, the reason for its inactivation was pointed out. After self-coiling welding boiler canister and cover were welded, at the self-coiling stress of boiler canister and welding stress of boiler canister and cover, the self-coiling welding boiler canister appeared stress corrosion cracking at the pitting corrosion by chloride inducement and sulfide accelerating.

关 键 词：奥氏体不锈钢 应力腐蚀开裂 锅炉 

分 类 号：TK229.51[动力工程及工程热物理—动力机械及工程]