高锰高氮不锈钢10Cr21Mn16NiN线材开发

介绍了10Cr21Mn16NiN钢线材成分设计、增氮原理、冶炼工艺、轧制和固溶工艺、Cr₂N相析出的生产工艺。采用30 t AOD精炼,吹氮气增氮,精炼后期加氮化锰。轧制时采用1 240 ℃加热、控轧控冷,保证了盘条表面质量,避免了中心缩孔等问题;固溶温度应控制在1 100 ℃左右,且保温30 min后快冷,可防止Cr₂N相析出。成功生产出表面质量和性能优良的10Cr21Mn16NiN不锈钢线材。

Exploitation of 10Cr21Mnl6NiN Stainless Steel Wire withHigh Manganese and High Nitrogen

The production process of steel 10Cr21Mnl6NiN wire rod, including composition design, principle of increasing nitrogen, smelting process, rolling and solution process, precipitation of Cr₂N phase is introduced. A 30 t AOD furnace is used for refining, blown nitrogen to increase nitrogen in steel water, and added manganese nitride at the later stage of refining. The surface quality of wire rod is ensured and the problem of central shrinkage is solved by adopting 1 240℃ heating and controlled rolling and cooling in the process. The solution temperature should be controlled at 1 100℃ and cooled quickly after holding for 30 min to prevent the precipitation of Cr₂N phase. The 10Cr21Mnl6NiN stainless steel wire rod with excellent surface quality and performance has been successfully produced.