Nb 微合金化钢连铸异型坯表面温度分析

特殊钢 ›› 2005, Vol. 26 ›› Issue (3): 51-53.

Nb 微合金化钢连铸异型坯表面温度分析

刘建华，包燕平，张军，杜松林，汤寅波，李建中

北京科技大学冶金与生态工程学院，北京100083 马鞍山钢铁股份有限公司，马鞍山243003

收稿日期:2004-11-29 出版日期:2005-06-01 发布日期:2023-05-29
作者简介:刘建华(1966-),男，博士，副教授。2001年毕业于北京科技大学冶金物理化学，从事精炼和连铸方面的研究。
基金资助:
国家技术创新项目(编号：〔2002〕566)

An Analysis on Surface Temperature of Concasting Profiled Beam Blank of Nb Microalloying Steel

Liu Jianhua, Bao Yanping， Zhang Jun，Du Songlin, Tang Yinbo， Li Jianzhong

School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083 Maanshan Iron and Steel Co Lid, Maanshan 243003

Received:2004-11-29 Published:2005-06-01 Online:2023-05-29

摘要/Abstract

摘要： 采用CIT-M型红外测温线性化传感器测定了马钢Nb 微合金化钢 SM490YB(%:0.09～0. 13C, 1.35～1.50Mn,0.04～0.06Nb)异型坯在连铸过程中的表面温度，结果表明异型坯横向表面温度不均匀；在二冷区测量位置和矫直区，铸坯表面温度基本处于SM490YB钢的低温脆性区(650～750℃);在二冷2段由于支撑棍间间隔喷水冷却，温度回复大于冶金规则允许的最大限度100 ℃/m。SM490YB异型坯浇铸应采用弱冷工艺，同时调整冷却喷嘴的布置，以提高异型坯表面质量。

关键词: Nb微合金化钢, 连铸异型坯, 表面温度

Abstract: The surface temperature of profiled beam blank of Nb microalloying steel SM490YB-0.09～0. 13C,1.35 ~1.50Mn,0.04～0.06Nb during concasting by CIT-M Infrared Pyrometer. The results showed that the traverse surface temperature of beam blank was uneven, the surface temperature of beam at measured location in secondary cooling and straightening area were generally in the brittle low temperature range between 650 ℃ and 750℃ of steel SM490YB; and due to interval water spraying cooling between supporting rollers,the re-rise rate of temperature of beam surface between some supporting rollers in secondary cooling area was higher than 100 ℃/m the limits of metallurgical rules. It shall be to adopt weakening cooling process during casting profiled beam and adjust distribution of spraying nomles in order to increase the surface quality of profiled beam.

刘建华, 包燕平, 张军, 杜松林 , 汤寅波, 李建中. Nb 微合金化钢连铸异型坯表面温度分析[J]. 特殊钢, 2005, 26(3): 51-53.

Liu Jianhua, Bao Yanping, Zhang Jun, Du Songlin, Tang Yinbo, Li Jianzhong. An Analysis on Surface Temperature of Concasting Profiled Beam Blank of Nb Microalloying Steel[J]. Special Steel, 2005, 26(3): 51-53.

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