Heating control method of plating alloy amount of plated metal plate

  • Inventors:
  • Assignees: Nippon Steel Corp
  • Publication Date: June 07, 1980
  • Publication Number: JP-S5576090-A

Abstract

PURPOSE: To correctly control the alloy amount on the plated metal plate by calculating the ultimate heating temperature and formed alloy amount in resistance heating and induction heating, obtained deviation-elimination-corresponding voltage from the alloy amount thus calculated and a preset alloy amount and determining control voltage then inputting the same to the control system for both heating. CONSTITUTION: At the time of heat treating the metal plate having been plated with dissimilar metals through combination of resistance heating and induction heating, the intermediate point temperature of the point corresponding to the mean value of electric resistivities and the ultimate temperature in the heating zone are calculated from the voltage, current, line speed, dimensions and material of the metal plate, plating amount and atmospheric temperature in resistance heating and further the ultimate temperature in induction heating is also calculated. From the ultimate temperatures of both, the formed alloy amount is calculated and the deviation-elimination-corresponding voltage for the set alloy amount is obtained. Thence, a control voltage is determined from the line speed, the intermediate point temperature of the resistance heating and the corresponding voltage, and is then inputted to the control system of the heating device, whereby the controlling of the alloy amount is accomplished. COPYRIGHT: (C)1980,JPO&Japio

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (2)

    Publication numberPublication dateAssigneeTitle
    JP-S50134933-AOctober 25, 1975
    JP-S51144340-ADecember 11, 1976Nippon Steel CorpMethod of measuring amount of alloy in plated layer

NO-Patent Citations (0)

    Title

Cited By (4)

    Publication numberPublication dateAssigneeTitle
    JP-H02217489-AAugust 30, 1990Armco IncProduction of steel strip subjected to galvannealing treatment and steel strip having zinc-iron alloy coating
    JP-H0429753-B2May 19, 1992
    JP-H05306491-ANovember 19, 1993Nkk Corp, 日本鋼管株式会社連続錫鍍金設備のリフロー制御装置
    JP-S61204392-ASeptember 10, 1986Nisshin Steel Co LtdProduction of chromium coated stainless steel strip