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1.概述我国钢产量由1949年的15.8×10~4t发展到1989年的61.24×10~4t,居世界第4位。1988年与1949年相比,轧材产量由14×10~4t增至4689×10~4t,品种规格由不足200个增至20000个以上,板管比由16％左右上升到36.6％,轧机台数由数十台增至1500台左右。轧钢技术有了长足的进步。 1.1发展历程我国轧钢业的发展经历了以下几个阶段: ①在旧中国千疮百孔的废墟上迅速恢复生产,从1949年开始,经历三年恢复时期到
1. Overview China’s steel production from 1949 15.8 × 10 ~ 4t development in 1989 to 61.24 × 10 ~ 4t, ranking fourth in the world. Compared with 1949, the output of rolled products increased from 14 × 10 4 t to 4689 × 10 4 t in 1988, and the specification of the products increased from less than 200 to more than 20,000. The ratio of plate and tube increased from about 16% to 36.6% Number of units increased from dozens to about 1500 units. Rolling technology has made great strides. 1.1 Development History The development of China’s rolling industry has undergone the following stages: ① the rapid restoration of production in the ruins of the riddled holes in old China, starting from 1949, after three years of recovery period to