| 摘要 |
PURPOSE:To obtain an excellent casting having less surface defects by measuring the rising rate of the molten metal temp. at the apout before and behind a furnance holding the copper melted in a shaft furnace and charging the copper meetimg said rate into the molten metal well just before a casting machine thereby controlling the molten metal temp. CONSTITUTION:A thermometer is attached to the 1st spout 2 for conducting the copper melted in a shaft furnace 1 to a holding furnace 3 and/or a spout 4 which charges the molten metal from the furnace 3 into a tundish or ladle 5. The present temp. T1 and the temp. T0 before the time DELTAH is measured with said thermometer and the predicted temp. T2 after the time DELTAH is calculated. The copper wire or the nugget of the copper of the amt. calculated preliminarily to meet DELTAT/DELTAH is supplied to the molten metal well 6 just before the spout 4 to control the temp. of the molten copper to be supplied to the casting machine. |
