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445/65R22.5 20PR全钢载重子午线轮胎的设计
Design of 445/65R22.5 20PR Truck and Bus Radial Tire
  
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中文关键词: 全钢载重子午线轮胎；结构设计；施工设计
英文关键词: truck and bus radial tire；structure design；construction design
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中图分类号:U463.341+.3/.6
Author NameAffiliation
WANG Xiaotao Triangle Tire Co.，Ltd 
ZHANG Chunge Triangle Tire Co.，Ltd 
LI Zhenbo Triangle Tire Co.，Ltd 
HAN Zhitian Triangle Tire Co.，Ltd 
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中文摘要:
      介绍445/65R22.5 20PR全钢载重子午线轮胎的设计。结构设计：外直径　1 153 mm，断面宽　454 mm，行驶面宽度　350 mm，行驶面弧度高　17 mm，胎圈着合直径　569.5 mm，胎圈着合宽度　356 mm，断面水平轴位置（H1/H2）　1.008 6，采用3条纵向主花纹沟设计，花纹深度　20 mm，花纹周节数　38，花纹饱和度　77.61%。施工设计：胎体采用0.25+（6+12）×0.225HT钢丝帘线，1#和2#带束层采用3+6×0.35HT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；采用一次法成型机成型，B型双模定型硫化机硫化。成品性能试验结果表明，成品轮胎充气外缘尺寸、强度性能和耐久性能符合相应设计和国家标准要求，胎圈耐久性能符合企业标准要求。
英文摘要:
      The design of 445/65R22.5 20PR truck and bus radial tire was described.In the structure design，the following parameters were taken：overall diameter　1 153 mm，cross-sectional width　454 mm，width of running surface　350 mm，height of running surface　17 mm，bead diameter at rim seat　569.5 mm，bead width at rim seat　356 mm，maximum width position of cross-section （H1/H2）　1.008 6，3 longitudinal pattern grooves，pattern depth　20 mm，total number of pitches　38，and block/total ratio　77.61%.In the construction design，the following processes were taken：0.25+（6+12）×0.225HT steel cord for carcass ply，3+6×0.35HT steel cord for 1# and 2# belt ply，5×0.30HI steel cord for 3#belt ply，3×7×0.20HE steel cord for 0° belt ply；using single stage building machine to build tires，and using B-type curing press to cure tires.It was confirmed by the tests of finished tires that the inflated peripheral dimension，strength performance and endurance performance met the requirements of relative design and national standard，and the bead endurance performance met the requirements of enterprise standard.
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