轮胎基础知识培训精品文档.pptVIP

The particularity of the radial structure, invented by Michelin in 1946, is that the function of the sidewall and crown are totally dissociated. How? The radial architecture consists of a carcass ply formed by textile arcs running from one bead to the other. Each arc is laid at an angle of 90° to the direction the tire rolls. At the top of the tire, a crown belt1, made up of several plies reinforced with metal wire, is laid on top of the carcass ply. These crown plies2 are laid one on top of another and overlap at an angle determined by the type of tire. The number of plies varies from one category of tire to the next (passenger car, truck, earthmover, agricultural, etc.). The thickness of the crown and sidewall plies is different so that the work of each part of the tire is more specialized. Here, in greater detail, we can see how the functions are specialized: the sidewall reinforcing consists of a single thin layer of textile. The rubber covering this reinforcing is also thin. At the crown we can see the textile reinforcing, near the inside of the tire, overlaid with the belt of metal plies. This construction gives flexible sidewalls and an inextensible crown.. 1- crown belt: series of crown plies 2- crown plies: rubber plies reinforced with metal or textile wires running round the tire crown USING THE SEMI-FINISHED EXAMPLES AND THE CUT SECTIONS, CAREFULLY DESCRIBE ALL THE INDIVIDUAL PRODUCTS AND WHERE THEY ARE FOUND IN THE TYRE. . MAKE SURE EVERYONE HAS UNDERSTOOD. 抗割 shear 寿命life 抓地grip(湿wet) 滑水slip 舒适comfortable 噪音Noise 操控(运动)steering 抓地grip(干dry) 离层 abscission 100 平均磨耗Wear 轮胎设计： 考虑综合因素的平衡 Expectations期望 Safety安全 Driving Pleasure 驾驶舒适 Cost 成本 Environment 环境 Performance性能 Grip (dry wet)干湿抓地力 Winter Grip冬季抓地力 Hydroplaning湿滑性能 High speed resistance高速性能 Tire Endurance耐久性能 Handling操纵性能 Vibration震动性能 Acoustic comfort噪音 Rolling Resistance滚动阻力 Tire Mass轮胎质量 Tire Life轮胎寿命 Extended Mobility适应性 Tyre Markings轮胎标志第五节 子午线轮胎的标志 轮胎扁平率 H/B = 0.6 ×100%