钢帘线表面和性能质量控制工艺的研究-材料加工工程专业论文.docxVIP

武汉科技大学硕士学位论文 武汉科技大学硕士学位论文 第1页 摘要 钢帘线是橡胶制品尤其是汽车子午胎理想的骨架材料，是线材制品中技术含量较高、 质量要求最为严格的产品之一．钢帘线具有强度高、变形小、散热性好，疲劳性能优异的 特点，因此，制成的子午线轮胎与传统的斜交胎相比具有诸多优点。 目前，我国的钢帘线生产水平远远不能满足轮胎行业迅猛发展的需求，在规格、质量、 产量等方面都与国外存在一定的差距。本文首先介绍了国内外钢帘线的发展现状以及未来 的发展趋势，包括国内外厂家对钢帘线用线材的质量要求和技术要求，对钢帘线的生产工 艺流程进行了简要叙述；重点分析了钢丝的热处理工艺以及钢丝拉拔、淬火后的组织、性 能的变化；阐述了原料盘条表面氧化层的形成机理，弯曲除鳞的原理、酸洗的影响因素以 及线材加热过程中的脱碳机理及脱碳层测定方法。 对各试样表面氧化层的组成、结构和形貌进行了实验研究，分析比较了各试样间的差 异；测定了不同厂家产品的脱碳层深度，给出不同产品表面质量之间的定量差异；对帘线 生产中的加热、铅浴淬火的工艺参数进行了正交试验分析，测定比较了各试样之间的强度 和塑性指标，根据实验结果提出了较好的热处理工艺制度。 关键词：钢帘线盘条氧化层热处理工艺 第1I页 第1I页 武汉科技大学硕士学位论文 Abstract The steel cord is all ideal carcass material of rubber products，especially radial tires for cars．it is one of the strictest products of quality requirement晰tll lligh technical advantage in wire products．The steel cord has the characteristics such aS high strength、small deformation and excellent performance of radiation and fatigue behavior．Therefore，compared to traditional tire， the radial tire made ofsteel cord has more advantages． Now,the production-level of steel cord in our country is far from meeting the demand that the rapid development oftire n砒．certain disparity exists with foreign countries in such aspects aS specification,quality and output．Firstly,this paper has introduced the current situation ofthe development of steel cord both at home and abroad and the development trend in the future， including the quality and technology requirement of wire for steel cord which produced by domestic and international company and the tedmological process of the steel cord have been narrated briefly；the heat treating process of steel wire and variety of microstmemre and performance after drawing and quenclliIlg have been analysed especially．Tllis text also has explained the formation mechanism of the surface oxide layer of wire rod and principles of descaling by alternating bending and influencing factors of pickling．The decarbarization mechanism of wire in he