热轧中厚板氧化铁皮控制技术  

Control Techniques of Oxide Scales in Hot-Rolled Heavy and Medium Plates

作　　者：陈永利[1] 查显文[1,2] 陈礼清[1] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110819 [2]中冶东方工程技术有限公司秦皇岛研究设计院,河北秦皇岛066004

出　　处：《东北大学学报（自然科学版）》2011年第7期960-963,980,共5页Journal of Northeastern University(Natural Science)

基　　金：国家高技术研究发展计划项目(2007AA03Z504)

摘　　要：为了探究热轧中厚板氧化铁皮控制方法,分析了氧化铁皮的影响因素并提出相应的控制方法.试验及生产实践结果表明:降低Si和Mn含量,在成分中加入合金元素Gr可以有效抑制氧化铁皮;采用微正压、微氧化气氛快速加热对氧化铁皮有较好抑制作用;保证1 173℃以上的除鳞温度和合理除鳞设备参数,采用高温快轧、低温精轧的轧制节奏可以有效抑制中厚板氧化铁皮;轧制速度和压下率对氧化铁皮厚度和板面粗糙度有显著影响,压下率和轧制速度越大,氧化铁皮厚度和表面粗糙度越小.Formation mechanism of iron oxide scales in hot-rolled heavy and medium plates was analyzed to explore the control method of oxide scales.The experimental and industrial results showed that the lower Si and Mn contents,the addition of Gr,the rapid heating with slight positive pressure and partial-pressure oxidization atmosphere,the descaling temperature above 1 173 ℃ and the reasonable equipment parameters of descaler can inhibit the formation of iron oxide scales.Adopting reasonable rolling parameters,high-temperature fast rolling and low-temperature finish rolling can also effectively reduce oxide scales.Rolling speed and reduction ratio can significantly affect the oxide scale thickness and surface roughness.The thickness and surface roughness of oxide scale decrease with the increase of reduction rate and rolling speed.

关 键 词：热轧中厚板 组织 氧化铁皮 缺陷 

分 类 号：TG151.1[金属学及工艺—热处理]