| 摘要 |
<p>A method for producing a raw plate for a surface treatment plate for a can using continuous annealing which comprises a step heating and soaking a cold rolled plate of a low carbon aluminum-killed steel, which contains C: 0.1 wt.% or less and N: 0.001 to 0.015 wt.%, to a temperature higher than the recrystallization temperature thereof, a step primarily cooling, after recrystallization, to 350 °C to 480 °C with an average cooling rate greater than 100 °C/sec and less than 300 °C/sec, a step conducting an overaging treatment with no re-heating after the aforementioned primary cooling, and a step finally cooling after the overaging treatment and conducting a temper rolling, wherein the temperature of the soaking is controlled according to the desired degree of refining and the heat cycle in the steps from the primary cooling downward is approximately the same, being independent of the degree of refining. This method can be used for separately producing various raw plates having various degrees of refining over the whole range from a soft material to a hard material, using a single CAL facility which is compact and does not entail great expense to construct, without lowering productivity or yield, and further at low costs and with stability.</p> |
