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| 全轮位325/95R24增强型全钢载重子午线轮胎的设计 |
| Design on All Position 325/95R24 Enhanced Truck and Bus Radial Tire |
| Received:October 09, 2022 Revised:October 09, 2022 |
| DOI： |
| 中文关键词: 全钢载重子午线轮胎；结构设计；施工设计；成品轮胎性能 |
| 英文关键词: truck and bus radial tire；structural design；construction design；finished tire performance |
| 基金项目: |
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| 中文摘要: |
| 介绍全轮位325/95R24增强型全钢载重子午线轮胎的设计。结构设计：外直径 1 224 mm，断面宽 318 mm，行驶面宽度 238 mm，行驶面弧度高 7.5 mm，胎圈着合直径 612.5 mm，胎圈着合宽度 228 mm，断面水平轴位置（ H/1/H/2） 1.17，胎面采用三道纵向曲折沟花纹，花纹深度 16 mm，花纹饱和度 74.2%，花纹周节数 64。施工设计：胎面采用两方两块贯通式基部胶结构，采用4层带束层，其中1# —3# 带束层采用3＋8×0.33ST钢丝帘线，4# 带束层采用3×4×0.22HE钢丝帘线，胎体采用0.25＋6＋12×0.225HT钢丝帘线，胎圈包布加强层为1层钢丝胎圈包布和两层锦纶纤维包布的增强型结构，采用一次法机械反包方式成型，蒸锅式硫化机硫化。成品性能试验结果表明，轮胎的充气外缘尺寸、强度性能、静负荷性能和耐久性能均达到相应的标准和设计要求。 |
| 英文摘要: |
| The design on all position 325/95R24 enhanced truck and bus radial tire was introduced.In the structure design，the following parameters were taken：overall diameter 1 224 mm，cross-sectional width 318 mm，width of running surface 238 mm，arc height of running surface 7.5 mm,，bead diameter at rim seat 612.5 mm，bead width at rim seat 228 mm，and maximum width position of cross–section（H1/H2） 1.17.The tread adopted three longitudinal zigzag grooves，pattern depth 16 mm，block/total ratio 74.2%，and mumber of pattern pitches 64.In the construction design，the following processes were taken：adopted a two-formula and two-piece through type base compound for tread，adopted a 4-layer belt，among them，
3＋8×0.33ST steel cord for 1#—3# belts，3×4×0.22HE steel cord for 4# belt，0.25＋6＋12×0.225HT steel cord for carcass.The enhancing layer of the bead chafer was a enhanced structure consisting of one layer of steel wire bead chafer and two layers of nylon fiber chafer，and using one-stage mechanical reverse molding method to build tires and a steamer plate press to cure tires.The test results of finished tire showed that，the inflated peripheral dimention，strength performance，static load performance and durability of the tire met the corresponding standards and design requirements. |
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