１　前言我厂小方坯连铸机可生产１２０×１２０、１５０ｍｍｘ１５０ｍｍ连铸坯；而小型分厂原横列式小型棒材轧机采用５９ｍｍ×５０ｍｍ、６０ｍｍｘ６０ｍｍ方坯。为了实现连铸坯－火成材，我厂投资１６００多万元进行改造。改造结果基本达到预期目标。２改造前概况我厂小 1 Introduction I plant billet caster can produce 120 × 120,150mmx150mm billet; while the small factory of the original line of small bar rolling mill with 59mm × 50mm, 60mmx60mm billet. In order to achieve continuous casting - fire into the timber, I plant more than 16 million yuan investment to transform. The results of the transformation have basically reached the expected goals. 2 before the transformation of our factory small