HRB400E含铬带肋钢筋的研发生产
Research and Production of HRB400E Chromium Containing Steel Bars
徐兵伟1
作者信息
- 1. 首钢长治钢铁有限公司,山西 长治 046031
- 折叠
摘要
介绍了 HRB400E含铬钢筋的化学成分、冶炼方法、轧制工艺、产品力学性能、金相组织和应用效果.采用转炉出钢过程加铬铁和吹氩精炼的方法,实现了 w(Cr)=0.32％～0.42％带肋钢筋的冶炼,Cr元素吸收率达到90％.轧钢方面,采用微合金化钢坯热轧生产工艺,含铬钢筋产品的力学性能完全满足协议要求;采用低成本控轧控冷生产工艺,轧件冷却过程中易出现贝氏体组织,延伸率指标达不到标准要求.
Abstract
This article introduces the chemical composition,smelting method,rolling process,mechanical properties,metallographic structure,and application effect of HRB400E chromium containing steel bars.The smelting of ribbed steel bars with a Cr content of 0.32～0.42％was achieved by using the method of adding chromium iron and argon refining during the converter steelmaking process,and the Cr element absorption rate reached 90％.In terms of steel rolling,the microalloyed steel billet hot rolling production process is adopted,and the mechanical properties of chromium containing steel bars fully meet the requirements of the agreement.Using low-cost controlled rolling and cooling production technology,bainite structure is prone to occur during the cooling process of rolled parts,and the elongation index does not meet the standard requirements.
关键词
HRB400E/含铬/带肋钢筋/微合金化/控轧控冷Key words
HRB400E/containing chromium/ribbed bars/microalloying/controlled rolling and cooling引用本文复制引用
出版年
2024
NETL
NSTL
万方数据