Q345H型钢的薄厚精密度是由冷扎加工工艺明确的。冷轧力和热轧带钢支撑力是控制系统的，以减少冷轧全过程中的薄厚误差，根据对挤压机通道侧和运输侧的热轧带钢薄厚的精确测量。冷轧带轧制油在淬火全过程中被烧毁，它是冷扎后的下一道工艺流程。在淬火以前，根据电解法清理去除其他类型的轧制油。
需注意，电解法清理与必须清理表层的商品一起应用，以保证优良的可喷漆性。Q345H型钢的可成形性由淬火决策。因为冷扎明显提升了原材料的强度，促使成型艰难，因此开展淬火是以便根据在钢中诱发加工硬化构造来提升可塑性。
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