宝钢钢管厂φ140mm无缝连轧管机组的狄塞尔导盘二辊式斜轧穿孔机由于轧辊直径大,倾角大,轧制压力大,穿孔速度快,国产顶头一般都不能适应该机组的使用要求,所以只得依赖进口。现经宝钢与常州冶金机械厂三年多的共同努力,穿孔顶头终于研制成功。经两年多的实际使用证明,顶头氧化层质量优于联邦德国同类产品,使用寿命每 Baosteel Steel Works φ140mm seamless pipe mill seamless steel pipe Diesel two-roll oblique piercing mill due to the roll diameter, large angle, rolling pressure, perforation speed, the domestic head generally can not adapt to the use of the unit Requirements, so have to rely on imports. After more than three years of joint efforts by Baosteel and Changzhou Metallurgical Machinery Factory, the piercing head has finally been successfully developed. After more than two years of actual use that the quality of the head oxide layer is superior to similar products in the Federal Republic of Germany, the service life of each