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日本钢铁公司京滨厂研究成功用圆坯连铸设备生产无缺陷圆坯的技术。该厂于1982年12月投产了一套生产小断面圆坯连铸机。其后,从精炼到锻造积极地进行了技术研究和技术改进,最后,研究成功无缺陷圆坯的生产技术。这项新技术适用于碳素钢至低合金钢所有钢种无缝管的生产。目前,该厂全部圆坯产量的99%完全不经清理直接提供给无缝管车间。
Japanese steel company Keihin Factory successfully researched the technology of producing a defect-free round billet using the round billet continuous casting equipment. The plant in December 1982 put into operation a production of small cross-section billet caster. Subsequently, from refining to forging actively carried out technical research and technological improvements, and finally, the successful study of the production of defect-free round billet technology. This new technology is suitable for the production of seamless pipes from all grades of carbon steel to low-alloy steel. At present, 99% of the plant’s entire round billet output is directly supplied to the seamless pipe shop without cleaning.