| 摘要 |
PURPOSE:To permit the easy handling of the coefft. of heat transfer and to heat surely billets to a target temp. by determining set furnace temp. in accordance with the four factors; the present and future billet temps., future furnace temp. and target billet temp. by using functions to calculate the furnace temp. and billet temp. respectively. CONSTITUTION:The preset temp. and billet temp. are first calculated by present temp. calculation 1 in a function part 106 to set the furnace temp. with the billet information and actual fuel flow rate from an operation information control part 102 and a fuel flow rate control part 103 as inputs in the operation of a continuous heating furnace 101. The future furnace temp. and billet temp. are predicted in accordance with the calculated temps. The heating-up pattern is determined by taking energy economization, etc., into consideration in heating-up pattern calculation 3. The results of the calculations 1-3 (2 is future temp. calculation) are inputted and the set value of the furnace temp. is determined by furnace temp. setting calculation 4. The function part 106 applies the set value determined in the above-mentioned manner to a control part 103 which controls the fuel flow rate by heating with a burner 105 so that a furnace temp. measuring part 104 attains the set value.
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