To meet uninterruptedly increasing in the demand for the cold rolled steel sheets and to meet the technological demand of continuous annealing, the production of ultra-low carbon steel is increasing.
为了满足市场对冷轧薄板钢需求量的不断增加和连续退火工艺要求，超低碳钢生产也在不断增加。
Some observations of voids formation were carried out by using low carbon steel with three kinds of heat-treatment, namely, normalizing, annealing and spheroidizing.
对三种不同热处理(正火、退火、球化)的低碳钢中微空洞的形成进行了一些观测。
Carbon steel bright heat treatment are mainly free-cutting steel and other low-carbon steel bright annealing, as well as bright demagnetization.
碳钢的光亮热处理主要有易切削钢等低碳钢的光亮退火处理以及光亮退磁。
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