化工设备与管道
化工設備與管道
화공설비여관도
Process Equipment & Piping
2015年
5期
17-20
,共4页
高强钢%氧气球罐%检验%裂纹处理
高彊鋼%氧氣毬罐%檢驗%裂紋處理
고강강%양기구관%검험%렬문처리
high strength steel%oxygen spherical tank%inspection%crack treatment
某钢铁企业650 m3氧气球罐在历次检验中发现对接焊缝上有较多的表面裂纹，针对该球罐主体材质07MnCrMoVR高强钢的焊接特点，对裂纹部位进行复膜金相和硬度测定，从裂纹分布形貌和产生机理综合分析，认为属于焊接冷裂纹中的延迟裂纹，不属于再热裂纹，并提出相应处理和预防措施。
某鋼鐵企業650 m3氧氣毬罐在歷次檢驗中髮現對接銲縫上有較多的錶麵裂紋，針對該毬罐主體材質07MnCrMoVR高彊鋼的銲接特點，對裂紋部位進行複膜金相和硬度測定，從裂紋分佈形貌和產生機理綜閤分析，認為屬于銲接冷裂紋中的延遲裂紋，不屬于再熱裂紋，併提齣相應處理和預防措施。
모강철기업650 m3양기구관재력차검험중발현대접한봉상유교다적표면렬문，침대해구관주체재질07MnCrMoVR고강강적한접특점，대렬문부위진행복막금상화경도측정，종렬문분포형모화산생궤리종합분석，인위속우한접랭렬문중적연지렬문，불속우재열렬문，병제출상응처리화예방조시。
In?several?inspections?for?one?650?m3 oxygen spherical tank, quite a lot cracks were found in weld seams. With respect to the characteristics of welding for material of 07MnCrMoVR, the metallographic composition and the hardness around cracks were measured.?Based?on?comprehensive?analysis,?it?was?considered?that?the?cracks?are?postweld?relayed?cold?cracks,?and?are?not?reheated?cracks. Then, the related treating and protecting measures were presented.
