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研究了５９０ＭＰａ级工程机械用高强度厚钢板调质工艺参数。分析在不同淬火、回火温度条件下钢板的组织与力学性能的关系。该钢在９２０℃淬火、５８０℃回火获得细的回火索氏体，其综合力学性能均超过标准要求。
The technological parameters of quenching and tempering of high strength steel plate for 590MPa grade construction machinery were studied. The relationship between the microstructure and mechanical properties of steel plate under different quenching and tempering temperatures was analyzed. The steel quenched at 920 ℃, 580 ℃ tempering get fine tempered sorbite, its comprehensive mechanical properties are more than the standard requirements.