随着机械工业的不断发展,对其基本原材料——轧材的质量要求也越来越高。与此同时,世界市场出现的不景气也使得竞争愈演愈烈,这种竞争促使生产厂家努力改善轧材质量,提高经济效益,而且对传统产品外部和内部特性的要求也日益严格。 With the continuous development of machinery industry, its basic raw materials - the quality of rolled material is also getting higher and higher. In the meantime, the downturn in the world market has also led to intensified competition, which has prompted manufacturers to work hard to improve the quality of rolling stock and increase economic efficiency. Moreover, the requirements on the external and internal characteristics of traditional products have also become increasingly stringent.