低炭素鉄板の性質におよぼす焼鈍条件の影響

概要

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The annealing of low-carbon steel sheets is usually performed either by a batch-type annealing furnace or by a continuous annealing furnace. In this paper, an experimental study was made on the recrystallization behavior of low-carbon iron sheets, and on the effect of annealing processes, i.e. box-type vs. continuous type, upon mechanical properties of low-carbon iron sheets. The main results obtained are as follows : 1) When compared with normal low-carbon steel sheets, low-carbon iron sheets has a higher recrystallization or softening temperture, and is relatively slow in recrystallization speed. 2) In the case of continuous-type annealing, more than 100℃ higher annealing temperature is needed compared with a batch-type annealing when the same mechanical properties and grain size are expected. 3) Batch-type or box-annealing is satisfactorily performed when the soaking time is more than 2h, and the optimum soaking temperature is around 850℃. 4) In the case of continuous-type annealing the necessary soaking period is at least more than 3mn, and the preferable soaking temperature is not less than 900℃, but when compared with the batch-type annealing method, properties of the product are somewhat inferior.
社団法人日本鉄鋼協会の論文
1962-12-01