摘要
T23管焊接接头失效已成为超超临界机组安全运行的重大隐患。以某电厂百万超超临界塔式锅炉为例,对锅炉水冷壁T23管开裂原因进行分析,发现焊接接头韧性不足和残余应力水平较高是导致失效的主要因素,据此提出了T23钢管焊接接头缺陷的治理措施。
The failure of T23 Steel tube welded joints has become an important hidden danger to safety operation of ultra-su-percritical units. This paper investigated the cracking reasons of T23 Steel water-wall tube in a 1,000 MW ultra-supercritical tower-type boiler and found the major causes are lacking of the toughness and high level of the residual stress in welding joints. According to the result, a treatment measure of the T23 Steel welded joints was suggested.
出处
《神华科技》
2014年第5期63-66,共4页
Shenhua Science and Technology
关键词
T23钢
焊接接头
缺陷
治理
T23 Steel
Welding Joint
Defect
Treatment
