| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.10 ( December1984 ) ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| An Outline of New Continuous Tin-Free Steel Line and Shearing Line Katsuhiko Iwanuma, Masayuki Morimoto, Shigeki Taniguchi, Tokumitsu Kimura, Yosho Izumiyama, Toshio Ichida |
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Synopsis : The continuous tin-free steel line (TFL) and the shearing line were introduced in June 1983 to the cold rolling plant of Chiba Works at Kawasaki Steel and are now in smooth operation. They have the following characteristics: The adherence of coatings was greatly improved by the development of the reverse electrolysis method. The automatic analysis system for measuring solution concentrations includes ICP analyzing equipment, which was also developed. Its optimum operating conditions were set by the process computer. Consequently, all chromium coated steel products were able to bed manufactured by an automated process from entry to delivery. The new shearing equipment permits improvement in the accuracy of the cutting length by digital control systems developed. Equipment including no loop enhanced the accuracy of squareness and detection of surface defects of products. The piling process based on the high-speed no-lapping system prevents the occurrence of dents due to slippage of the strip. As a result, quality has been improved and stabilized. |
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