控制轧制与控制冷却对16Mn钢板组织和性能的影响

THE INFLUENCE OF CONTROLLED ROLLING AND CONTROLLED COOLING ON THE MICROSTRUCTURE AND PROPERTIES OF 16Mn STEEL PLATE

摘要: 本文研究了终轧温度及控轧后冷却速度对16Mn钢板组织及性能的影响。结果表明:1.适当地降低终轧温度对改善16Mn钢板性能是有利的。2.轧后冷却速度对组织及性能有较大的影响,随着冷却速度增大,钢的强度显著提高,当冷却速度在5～22℃/s的范围内,钢的塑性及韧性均合格。冷却速度为5℃/s、15℃/s,38℃/s时,其屈服强度分别可达到35kgf/mm²,40kgf/mm²、45kgf/mm²的级别。可以认为,控轧及控冷是提高16Mn钢板强韧性的有效力法。

Abstract: This article has studied that both of the finish rolling temperature and cooling speeds after hot-rooling influence on the microstructure and mechanical properties. Experimental results demonstrate:1) appropriately reducing finish rooling temperature will improve mechanical properties of 16Mn steel plate. 2) as cooling speeds increasing after hot-rooling, strength of steel increases obviously,when cooling speeds between 5℃/s and 22℃/s. The plasticity and ductility come up to the standard value, at cooling speed of 5℃/s, 15℃/s and 38℃/s, yield-strengths make the grade of 35kgf/mm², 40kgf/mm² and 45kgf/mm²; respectively. Therefore controlled cooling after hot rooling is an effective method for increasing strength-ductility of 16Mn steel.