1前言近10年来，与世界各主要工业大国钢铁工业发展萎缩的形式相反，我国钢铁工业生产发展迅速，尤其是线材更是发展迅猛。1994年全国线材产量1530万吨，其中高速线材50O万吨，占线材总产量的32．7％。高速线材的引进和投产，使我国线材产品、品种、质量上了一个新台阶，但另一 1 Introduction In the past 10 years, contrary to the shrinking development of the iron and steel industry in all the major industrial powers in the world, the production of iron and steel industry in our country has been developing rapidly. In particular, the wire industry is developing rapidly. In 1994, the national wire production reached 15.3 million tons, of which 5.0 million tons were high-speed wire rods, accounting for 32.7% of the total wire rod production. The introduction of high-speed wire and put into operation, so that China’s wire products, varieties, quality on a new level, but the other