一.前言值此所需钢的产品品种逐渐增多之际,用户对其质量要求也不断提高。与此同时,钢铁生产正在朝着各种不同性能和钢种的小批量定货方面变化。在这种情况下,为了建立一个完善的生产基地作为优质钢产品的可靠供给源地 I. Preface The value of the steel products required by the gradual increase in the species, the user of its quality requirements are also rising. At the same time, steel production is moving toward small batch orders of different properties and grades. Under such circumstances, in order to establish a sound production base as a reliable source of quality steel products