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2025年8月5日,山西太钢不锈钢股份有限公司成功申请一项专利,名称为“一种量具用马氏体不锈钢板及其制造方法” ,申请公布号为CN120425118A,申请日期回溯至2025年4月18日。

此发明聚焦于量具用马氏体不锈钢板及其制造工艺。其制造方法涵盖成分优化控制、热连轧轧制、退火及平整等关键环节。在化学成分优化方面,有着严格设定:C含量控制在0.37~0.43%、Cr为13.0~14.5%、Si为0.6~1.2%、Mn为0.5~1.0%、P≤0.035%、S≤0.01%、Ni≤0.1%、V为0.08~0.15%、N为0.04~0.07%、Al≤0.01%、Nb≤0.01%、Ti≤0.01%,且N与V的原..

热连轧轧制环节,对板坯加热温度、各精轧阶段变形率有明确要求。板坯加热需达1200~1280℃ ,精轧F1、F2变形率大于38% ,F3、F4大于30% ,F5、F6为20%~28% ,F7小于16%。退火阶段,温度设定在830℃~870℃ ,保温18~25h 。平整时,压力为150~200吨,出口张力2.5~3.2kg/mm²。

通过该发明,量具用马氏体不锈钢得以具备优良磨削性与耐蚀性,且经热处理后能呈现高表面质量。如此一来,有效提升了产品合格率,延长产品使用寿命,从而满足量具行业用钢的特定需求。(信息源自国家知识产权局)

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