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随着国民经济建设的发展,无缝钢管的用途越来越广泛,对其生产品种的要求也越来越高。对它不仅要求生产园形无缝钢管,同时也要求生产异形无缝钢管。 目前,小型异形无缝钢管,利用冷拔的方法,国内已有生产。而大型异形无缝钢管,国内尚为空白。因此,如何发挥热轧机组的设备潜力,主要是利用定径机,生产大型异形无缝钢管,这对于国民经济建设,是具有很大经济意义的。
With the development of the national economy, the use of seamless steel pipe is becoming more and more widespread, and the requirements for its production varieties are also getting higher and higher. It not only requires the production of circular seamless steel pipe, but also requires the production of shaped seamless steel pipe. At present, small shaped seamless steel pipe, the use of cold-drawn methods, the domestic production. The large-scale shaped seamless steel pipe, the domestic is still blank. Therefore, how to give full play to the potential of hot rolling mill equipment is mainly due to the use of sizing machines to produce large-scale shaped seamless steel tubes, which is of great economic significance for the national economic construction.