贝泰威三相合金镀层钢丝帘线在轮胎中的应用

研究铜、锌、钴三相合金镀层钢丝帘线贝泰威®结合无钴粘合胶料在轮胎中的应用,并与现行的黄铜(铜锌合金)镀层钢丝帘线结合含钴粘合胶料进行对比。结果表明:在高温高湿的老化条件下,与黄铜镀层钢丝帘线加含钴胶料相比,贝泰威®钢丝帘线的粘合力明显提升,无钴胶料表现出优异的抗硫化返原性能;轮胎中贝泰威®钢丝帘线的剥离力和覆胶率及覆胶形貌明显优于黄铜镀层钢丝帘线;使用贝泰威®钢丝帘线加无钴胶料的轮胎钢丝帘线粘合层的规整性明显优于使用黄铜镀层钢丝帘线加含钴胶料。

315/70 R22.5湿地、雪地抓着性能测试用标准测试轮胎研发

介绍了315/70 R22.5标准测试轮胎研究开发的背景及重要意义,研究分析了标准测试轮胎作为一种用于评价测量的参比物,必须具有准确性、均匀性和稳定性三个特征,创新设计了超低温环境下高附着力橡胶配方,多功能胎冠花纹设计及轮胎性能控制技术等,填补了国内该技术领域空白。

Prediction of Deformation and Footprint of High-speed Rotating Radial Tires

In this research,the tire deformations due to rotation are divided into three parts:tread,belt and carcass.Tread deformation is obtained by using a rotating hollow cylinder model,belt expansion is calculated according to the laminated composite shell theory,and a formula of dynamic equilibrium profile is built to investigate carcass deformation.Moreover,a simple method is used to predict the footprint changes caused by tire deformation.Results show that a large deformation is occurring at tire shoulder,a smaller one at tread centre,and the shoulder deformations are mostly caused by carcass.Length of footprint side edges increase with tire rolling speed increasing.The predicted tread,belt,carcass deformations and footprint changes are in good agreement with finite element analysis results.The proposed method and the results will offer a helpful guidance to tire and vehicle engineers.

0.16+5×0.205+9×0.235CCST钢丝帘线在全钢载重子午线轮胎中的应用

研究0.16+5×0.205+9×0.235CCST新型钢丝帘线在全钢载重子午线轮胎中的应用。结果表明:以0.16+5×0.205+9×0.235CCST钢丝帘线替代0.17+5×0.215+10×0.235CCST钢丝帘线用于12R22.5 18PR全钢载重子午线轮胎胎体,钢丝帘线的渗胶性能提高,刚度有所下降;成品轮胎的外缘尺寸、强度性能、高速性能及耐久性能均满足企业标准要求,同时可减小钢丝帘布厚度和质量,降低轮胎的生产成本。