H13钢电渣锻材超细化工艺研究

Research on Ultra-refining Process of H13 Steel Forgings Manufactured by ESR

长城特钢为了满足用户对组织和冲击的特殊需求(组织AS1-AS5,横向7×10×55mm无缺口冲击值≥360J),对热作模具钢热锻材H13进行了不同的淬火温度和保温温度的试验以确定最佳的超细化工艺。结果表明H13的力学性能与超细化的淬火温度很大的关系。超细化工艺:1100℃淬火为最佳工艺,钢材的力学性能最好,硬度均匀,金相组织也合格,完全满足用户标准要求。

In order to meet the user’s special requirements for microstructure and impact value, different quenching and holding temperature tests were performed during manufacture of hot forged material H13 for hot working die steel to determine the optimum ultra-refining process.The results showed that the mechanical properties of H13 have a close relationship with the quenching temperature for ultra-refinement;quenching for ultra-refinement at 1100℃ is the best process, which could get the best mechanical properties, uniform,hardness and qualified metallographic structure, so the technical requirements of standards were fully met.