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新日本钢铁公司采用一种新的切分轧制法生产圆钢和螺纹钢。新的切分轧制法称为“多条切分轧制法”,钢坯靠轧辊进行切分,而不使用任何特殊的切分装置。切分数量可自由选择,以达到所需的生产率。一、切分方法小方钢坯通过1～8道次轧成扁钢,在第9道形成缩颈(切分四条则要形成三个缩颈),在第10道进一步加深缩颈,然后进入切分孔,而从缩颈处切断。此时,钢坯以相同角度扭
Nippon Steel Corporation uses a new split-rolling method to produce round and rebar. The new split rolling method is called “multiple split rolling method”, the billet is cut by the roller, without using any special cutting device. The number of cuts is freely selectable to achieve the desired productivity. First, the method of segmentation Small square billet rolled into flat steel 1 to 8 times, the formation of necking in the 9th (cut into four will have three necks), in the 10th to further deepen the neck, and then enter Cut the hole, cut off from the necking. At this point, the billet twist at the same angle