高铬钢复合辊结合层针状缩孔缺陷的消除

IMR OpenIR

	高铬钢复合辊结合层针状缩孔缺陷的消除
	董振强
学位类型	硕士
导师	李殿中 ; 艾忠诚
	2012
学位授予单位	中国科学院金属研究所
学位授予地点	北京
学位专业	材料工程
关键词	离心铸造高铬钢轧辊缩松缺陷消除 Centrifugal Casting High-chromium Cast Steel Roll Shrinkage Defects Resolve
摘要	" 高铬钢轧辊作为热轧带钢粗轧后架工作辊已经在国内外得到广泛应用。在竞争日益激烈的轧辊行业，生产出满足用户技术要求的高铬钢轧辊并不断提高其性能，不仅具有理论意义，而且具有经济意义。本文通过查阅大量文献，结合鞍钢轧辊厂丰富的离心轧辊铸造经验，对高铬钢复合轧辊研制过程中出现的缩松缺陷进行了系统分析，并通过调整中间层材质成分、改进浇注工艺等措施使缺陷得以消除，有效提高了高铬钢轧辊综合性能和使用寿命。主要工作内容有： 1、对缺陷部位进行形貌、成分检测分析，排除气孔、夹杂等可能，判断出在高铬钢轧辊离心铸造过程中产生了缩松（针状缩孔）缺陷。 2、为消除高铬钢轧辊结合层部位的针状缩孔缺陷，以提高轧辊性能，制订出调整中间层材质、改进工艺等措施。 3、根据改进措施进行生产试制，并进行系统检验。重点检验改进工艺后轧辊的探伤、硬度、抗拉强度等性能。 4、通过检验对比发现，改进工艺后生产的高铬钢轧辊在保证原有良好性能基础上，消除结合层缺陷，进一步提高轧辊厂高铬钢轧辊生产技术。关键词：离心铸造，高铬钢轧辊，缩孔缺陷，消除 "
其他摘要	" High-chromium steel roll as hot strip back work rolls has been widely used in the world. Increasingly competitive in the work roll industry, Products to meet the technical requirements of users of high-chromium steel roll and continue to improve its performance, Not only of theoretical significance, but also makes economic sense. In this paper, according to a large literature, Combined with many years of experience in centrifugal roll in the roll factory, In the development process of high chromium steel roll, For the occurrence of shrinkage defects and to determine the system analysis, And by adjusting the composition of the intermediate layer material, And other measures to improve the casting process to resolve defects, Effectively improve the high-chromium steel roll overall performance and service life. Following major elements: 1, We do testing and analysis for defects area in composition and shape, Exclude porosity, inclusions, etc. Determine the high-chromium steel roll in centrifugal casting process produces a shrinkage (needle-like holes )defect. 2, To eliminate shrinkage defect of needle-like hole in connect layer of high-chromium steel roll,, To improve the roll performance , We adjust the middle layer of material, process improvements and other measures. 3, Pilot production according to the improved measures, And system tested, Focus on the inspection non-destructive testing, hardness, tensile strength and other properties after improving process of the roll. 4, Found by examining the contrast, Improve the process after the production of high-chromium steel roller to ensure good performance, based on the original, And the binding layer defects can be eliminated. High-chromium steel roll production technology to further improve in roll factory. Keywords:centrifugal casting, high-chromium cast steel roll, shrinkage defects, resolve "
文献类型	学位论文
条目标识符	http://ir.imr.ac.cn/handle/321006/64559
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	董振强. 高铬钢复合辊结合层针状缩孔缺陷的消除[D]. 北京. 中国科学院金属研究所,2012.