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| 325/95R24（12.00R24）TT/TL通用型全钢载重子午线轮胎的设计 |
| Design on 325/95R24（12.00R24） TT/TL General Truck and Bus Radial Tire |
| Received:April 11, 2021 Revised:April 11, 2021 |
| DOI： |
| 中文关键词: 全钢载重子午线轮胎；通用型；混合花纹；结构设计；施工设计；成品性能 |
| 英文关键词: truck and bus radial tire；general；mixed pattern；structure design；construction design；finished tire performance |
| 基金项目: |
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| 中文摘要: |
| 介绍325/95R24（12.00R24）TT/TL通用型全钢载重子午线轮胎的设计。结构设计：外直径 1228 mm，断面宽 312 mm，行驶面宽度 240 mm，行驶面弧度高 7.47 mm，胎圈着合直径 612.6 mm，胎圈着合宽度 216 mm，断面水平轴位置（H1/H2） 1.15，胎面采用以横沟为主的横纵混合花纹沟、大块状花纹，花纹深度 20.5 mm，花纹饱和度 66%，花纹周节数 49。胎侧字体排布考虑到共用问题，同时打刻325/95R24和12.00R24。施工设计：胎面采用两方三块翼胶结构，1#和2#带束层采用3＋8×0.33HT钢丝帘线，3#带束层采用5×0.30HI钢丝帘线，0°带束层采用3×7×0.20HE钢丝帘线，胎体采用0.22＋6＋11×0.205ST超高强度钢丝帘线。采用一次法成型机成型，蒸锅式硫化机硫化。成品轮胎性能试验结果表明，轮胎的充气外缘尺寸、强度性能和耐久性能均满足相应设计和国家标准要求。 |
| 英文摘要: |
| The design on 325/95R24（12.00R24） general TT/TL truck and bus radial tire was introduced.In the structure design，the following parameters were taken：overall diameter 1 228 mm，cross-section width 312 mm，width of running surface 240 mm，arc height of running surface 7.47 mm，bead diameter at rim 612.6 mm，bead width at rim seat 216 mm，maximum width position of cross-section（H1/H1） 1.15，horizontal and longitudinal mixed pattern groove and large block pattern for tread with main horizontal groove，pattern depth 20.5 mm，block/total ratio 66%，and number of pattern pitches 49.In the sidewall trademark font design：considering the problem of common font layout，325/95R24 and 12.00R24 tire were engraved on the sidewall at same time.In the construction design，the following processes were taken：two-formula and three-piece structure for tread with wing shape，3＋8×0.33HT steel cord for 1# and 2# belt，5×0.30HI steel cord for 3# belt，3×7×0.20HE steel cord for 0° belt，0.22＋6＋11×0.205ST steel cord for carcass，using one stage building machine to build tire and steam press to cure tire.It was confirmed by the tests of the finished tire that，the inflated peripheral dimension，strength and endurance met the requirements of corresponding design and national standards. |
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