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对Q550热轧中厚板轧后直接淬火+回火(DQ-T)工艺替代调质工艺进行研究,试验中选取3种厚度规格的钢板,通过DQ-T多种工艺的比较,摸索出最佳的生产工艺,并批量生产出具有良好稳定综合力学性能的Q550高强度中厚钢板。
The direct quenching and tempering (DQ-T) process of quenching and tempering process of Q550 hot rolled plate is studied. Three kinds of thickness gauge steel plate are selected and compared by DQ-T process, Good production technology, and mass production of a stable and comprehensive mechanical properties of Q550 high-strength steel.