文档介绍：某某XX 学院
毕业设计说明书(论文)
作者: 学号:
学院(系、部): 材料工程学院
专业: 材料科学与工程
题目: 钢帘线形变组织加热转变过程分析
指导者:
评阅者:
2011 年 6 月
毕业设计说明书(论文)中文摘要
钢帘线形变组织加热转变过程分析
汽车轮胎中使用的钢帘线使用共析钢制造,随着钢帘线棒材冷拔减面到一定尺寸后,其强度提高、塑性下降,需要重新加热奥氏体化随后派登处理获得极细的索氏体组织,调整力学性能以满足后续的拉拔形变。本文主要研究钢帘线形变组织的奥氏体化转变规律,优化工艺参数、控制热处理质量。通过热处理工艺试验,改变加热温度和时间。采用金相法、硬度法研究奥氏体化过程中形变组织的变化规律。试验结果表明:在Ac1以下加热,形变组织先发生渗碳体片层的粒化转变,温度升高、时间延长后即发生再结晶转变;770℃以上开始奥氏体化,形变组织的奥氏体化温度有升高迹象;采用高温短时的加热方式可以控制奥氏体晶粒,获得良好的组织。
关键词:钢帘线;形变组织;奥氏体化;相变规律
毕业设计说明书(论文)外文摘要
Title Research On Heating Transition For Cord Deformation Structure
Abstract:
Steel cord used in automobile tires using the eutectoid steel,with a certain size decrease on cut surface of steel cord bar drawing,the strength increase, the plastic these properties have a close relationship on the process of austenite after deformed wire in the drawing. As the lack of the plastic to re-heat the austenitizing,and then into very fine Sorbite, adjust the intensity to meet the subsequent this paper, deformed steel cord tissue by heating austenitized then quenching the formation of martensite specimen preparation the microstructure was of the degree of austenite transformation process. Of heating temperature and time on anizational changes in grain using metallographic method and hardness method have a research on the process of the experimental results, have a concluditon that at the temperature below Ac1, deformation occurs anized lamellar cementite grain transition, temperature, recrystallization occurs after prolonged change. The austenitizing temperature is higher than normal tissue, more than 770℃ to start austenitizing, and high temperature short time heating method has good performance on their
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Keywords: Steel Cord; Deformation Structure; Austenitizing; Phase change rule
pha
目录
前言 1
第一章绪论 2
2
国内外钢帘线生产现状及发展趋势 2
2
国外钢帘线生