鋼板對(duì)接焊縫熱影響區(qū)產(chǎn)生大長(zhǎng)度裂紋原因
- Q345B鋼板對(duì)接焊縫兩側(cè)熱影響區(qū)出現(xiàn)裂紋長(zhǎng)度較大,母材化學(xué)成分、機(jī)械性能檢測(cè)均未發(fā)現(xiàn)問(wèn)題,工藝參數(shù)經(jīng)過(guò)長(zhǎng)期施焊驗(yàn)證,焊工為老焊工操作符合要求,請(qǐng)專(zhuān)家指導(dǎo)產(chǎn)生原因
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問(wèn)
提問(wèn)者:網(wǎng)友
2017-06-13