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一、概况本厂φ75(20~#)管坯由第四轧钢车间生产,经无缝车间酸洗检验发现有翘皮与横裂,这些缺陷分布面积广,数量亦多(约占5—10%),磨修困难,若不清除,造成成品钢管表面翘皮及横裂,严重影响了质量与产量。经火花检验该种缺陷含碳极高,与通常遇到的翘皮、横裂绝不相同。在厂党委领导下组成生产工人、领导、技术人员三结合班子,深入车间现场观察,对缺陷的特征及产生原因进行了试验探讨。车间积极采取改进措施,取得了成效,提高了管坯质量。
First, an overview of the factory φ75 (20 ~ #) from the fourth rolling steel rolling production shop, pickling test found seamless workshop with warping and transverse cracking, these defects are widely distributed, the number is also more (about 5-10 %), Wear repair difficulties, if not removed, resulting in finished steel pipe surface warping and transverse cracking, seriously affecting the quality and yield. The spark test of such defects high carbon content, and the commonly encountered Alice, transverse not the same. Under the leadership of the factory party committee composed of three production workers, leaders, technicians combined team, in-depth observation of the workshop site, the defects of the characteristics and causes were discussed. Workshop to take positive measures to improve and achieved success, improve the quality of tube.