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two-step normalizing
释义
two-step normalizing
Encyclopedia
工学
正火
释
two-step normalizing
二段正火
工件加热至Ac3或者Accm以上30~50℃并保温适当时间后,在静止的空气中冷却到Ar1附近即转入炉中进行缓慢冷却的正火工艺。
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