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| 25/50ZRF17 94W跑气保用轿车轮胎的研发 |
| Development of 225/50ZRF17 94W Run Flat Passenger Car Tire |
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| DOI： |
| 中文关键词: 跑气保用轿车轮胎；结构设计；施工设计；内支撑胶 |
| 英文关键词: run flat passenger car tire；structure design；construction design；sidewall support compound |
| 基金项目: |
| 中图分类号:U463341＋.4/.6 |
| Author Name | Affiliation | | LIN Li-yu | Guangzhou South China Rubber & Tire Co.，Ltd | | CAO Hui | Guangzhou South China Rubber & Tire Co.，Ltd | | WANG Zhi-yuan | Guangzhou South China Rubber & Tire Co.，Ltd | | ZHOU Tao | Guangzhou South China Rubber & Tire Co.，Ltd | | LU Yan-fang | Guangzhou South China Rubber & Tire Co.，Ltd | | BAI Ya | Guangzhou South China Rubber & Tire Co.，Ltd |
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| 中文摘要: |
| 介绍225/50ZRF17 94W跑气保用轿车轮胎的研发情况。结构设计：外直径 654 mm，断面宽 238 mm，行驶面宽度 188 mm，行驶面弧度高 7.8 mm，胎圈着合直径 435.83 mm，胎圈着合宽度 196 mm，断面水平轴位置(H1/H2) 1.001，采用不对称胎面花纹，花纹深度 8.2 mm，花纹饱和度 62%，花纹周节数 73。施工设计：胎面采用三方四块结构，带束层采用2×0.30HT钢丝帘线，胎体采用2层2200dtex/2聚酯浸胶帘布，胎侧采用内支撑胶加强，下胎侧补强层采用94tex/2锦纶66浸胶帘布，采用二步法成型工艺、双模定型硫化机硫化。成品性能试验结果表明，轮胎的充气外缘尺寸、强度性能、脱圈性能、高速性能、耐久/低气压/高速联合性能和零气压性能均符合设计和相关标准要求。 |
| 英文摘要: |
| The development of 225/50ZRF17 94W run flat passenger car tire was introduced.In the structure design，the following parameters were taken：overall diameter 654 mm，cross－sectional width 238 mm，width of running surface 188 mm，height of running surface 7.8 mm，bead diameter at rim seat 435.83 mm，bead width at rim seat 196 mm，maximum width position of cross－sectional(H1/H2) 1.001，unsymmetrical tread pattern，pattern depth 8.2 mm，block/total ratio 62%，and total number of pitches 73.In the construction design，the following processes were taken:three formula and four piece tread，2×0.30HT steel cord for belt，2 layers of 2200dtex/2 polyester dipped cord for carcass ply，support compound to reinforce sidewall，94tex/2 nylon 66 dipped cord for lower part of sidewall，and using two stage building process to build tires and curing press to cure tires.It was confirmed by the test of finished tires that，the inflated peripheral dimension，strength，bead unseating resistance，high speed performance，endurance performance under low inflated pressure and high speed，and zero pressure performance all reached the requirements of design and enterprise standard. |
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