連鑄(zhu)圓坯(pi)表面(mian)質量是(shi)決定金屬收得(de)率和成本的重(zhong)要因素，必須(xu)采取以下相應措施加(jia)(jia)以控制。鑄(zhu)坯(pi)表面(mian)存(cun)在的裂紋、夾渣、凹(ao)坑、重(zhong)接、氣孔、切(qie)傷、劃傷等缺陷(xian)必須(xu)通過精(jing)整修磨清(qing)理(li)，合格后才能進行熱加(jia)(jia)工，否則會(hui)造成軋制缺陷(xian)。

 鑄(zhu)坯(pi)(pi)表(biao)面(mian)(mian)(mian)(mian)(mian)重(zhong)接(jie)、切(qie)傷和劃傷塊陷(xian)(xian)主(zhu)要(yao)與(yu)連鑄(zhu)設備異(yi)常(chang)有關。鑄(zhu)坯(pi)(pi)表(biao)面(mian)(mian)(mian)(mian)(mian)重(zhong)接(jie)是因(yin)拉矯機突然停(ting)頓造成的(de)(de)；鑄(zhu)坯(pi)(pi)表(biao)面(mian)(mian)(mian)(mian)(mian)切(qie)傷是連鑄(zhu)切(qie)割(ge)系統異(yi)常(chang)造成的(de)(de)：鑄(zhu)坯(pi)(pi)表(biao)面(mian)(mian)(mian)(mian)(mian)劃傷是由于輸(shu)送輥不轉或粘有堅(jian)硬異(yi)物造成的(de)(de)。  鑄(zhu)坯(pi)(pi)表(biao)面(mian)(mian)(mian)(mian)(mian)重(zhong)接(jie)和切(qie)傷多是偶然發(fa)生(sheng)(sheng)的(de)(de)；而鑄(zhu)坯(pi)(pi)表(biao)面(mian)(mian)(mian)(mian)(mian)劃傷只要(yao)出現就(jiu)會連續大量(liang)(liang)發(fa)生(sheng)(sheng)，因(yin)此必須經常(chang)巡視(shi)檢查(cha)在線鑄(zhu)坯(pi)(pi)表(biao)面(mian)(mian)(mian)(mian)(mian)質(zhi)量(liang)(liang)，發(fa)現問題及時處(chu)理，避免(mian)缺陷(xian)(xian)大量(liang)(liang)發(fa)生(sheng)(sheng)。