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我国的废钢来源有两种,一种是由厂外购入,另一种是由厂内回收;尤其自产返回钢(如炼钢的汤道、注余、轧、锻切头等)为钢铁冶炼良好的原料。对于钢铁冶炼工厂的平炉、电炉及转炉所用的钢铁废料管理情况及技术条件初步意见略述如下: 甲、平炉炼钢所用的废钢必须乾净,不含杂质及无过多的铁锈。一、根据废钢重量来说,可分为两种:第一种为重废钢,如废钢胚、板胚或废钢锭等,其重量较大,熔化时间较长,不易氧化;另一种为轻废钢,如钢屑或其他较轻的废钢件,如机器零件及各种废薄板、小
There are two sources of scrap in our country, one is purchased from outside the factory and the other is recovered from the factory. In particular, the return of steel from the production (steel soup, note remover, rolling, forging first) Smelting good raw materials. The preliminary comments on the management of steel scrap and technical conditions used in open hearth furnaces, electric furnaces and converters in iron and steel smelting plants are summarized as follows: A. Scrap used in open hearth steelmaking must be clean, free of impurities and without excessive rust. First, according to the weight of the scrap, can be divided into two kinds: The first is heavy scrap, such as scrap steel embryo, embryo or scrap ingot, its weight, longer melting time, not easy to oxidation; the other is light Scrap, such as steel scraps or other lighter scrap pieces, such as machine parts and various scrap sheets, are small