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1984年11月,一条新的酸洗机组在日本制钢株式会社Had Shin工厂投产。每月产量可达13万吨。原料热轧带钢厚度为1.6～4.5毫米,宽600～1610毫米,最大卷重25吨。由于焊接机上安装有切头剪,可减少机组换卷时入口段的停车时间。入口和出口活套采用了双层活套的活套车,这样就缩短了活套的长度。为了解决原料的除锈问题,以水平酸洗槽为中心的酸洗机组还设有一台粗轧除鳞机,一组机械除鳞刷和一个利用机组余热加热的予热槽。这条新机组只需四个工人进行操作,取代了原来用硫酸进行酸洗的一条旧机组。
In November 1984, a new pickling unit was put into operation at Had Shin Plant, Japan Steel Works. Monthly output up to 130,000 tons. Hot rolled strip thickness of 1.6 to 4.5 mm, width 600 ~ 1610 mm, the maximum weight 25 tons. Due to the welding machine is equipped with a shear cutter, can reduce the unit at the entrance section of the parking lot of time. The entry and exit looper uses a two-looper looper, which shortens the looper’s length. In order to solve the problem of rust removal of raw materials, the pickling unit with horizontal pickling tank as the center also has a roughing and desizing machine, a set of mechanical descaling brushes and a preheating tank which utilizes residual heat of the unit to heat. This new unit requires only four workers to operate, replacing an old unit that had been acid-washed with sulfuric acid.