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1980年以前,三钢线材车间生产Φ6.5、Φ8、Φ10mm三个规格。1980年以后全部生产Φ6.5mm线材。几年来,三钢重视提高Φ6.5mm线材质量,充分满足了用户要求。主要采取了以下措施:①提高坯料质量,采用连铸70mm方坯,同时,进加热炉前认真挑废,表面质量太差,整支挑出,1987年挑出废坯1927t,钢坯头部质量差的,去头。去年割钢坯头共39695个。②1987年4月进行大修,主要改造项目12项,即把原来Φ240mm胶木瓦闭口式轧机改为Φ280mm四列短圆柱轴承开口式轧机。总投资188.66多万元。改造后线材成品精度由
Before 1980, the three steel wire workshop production Φ6.5, Φ8, Φ10mm three specifications. After 1980 all Φ6.5mm wire rod production. Over the past few years, three steel emphasis on improving Φ6.5mm wire quality, fully meet the user requirements. Mainly taken the following measures: ① improve the quality of billet, the use of continuous casting 70mm billet, at the same time, carefully pick the waste before the heating furnace, the surface quality is too poor, the whole pick, 1987 out of waste billet 1927t, billet head quality Poor, to the head. Last year cut a total of 39,695 steel billet. ② 1987 April overhaul, the main transformation project 12, that is, the original Φ240mm bakelite closed-mouth mill changed Φ280mm four columns of short cylindrical bearings open mill. A total investment of 1886600 yuan. After the transformation of wire products from precision