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245/70R17.5全钢载重子午线轮胎的设计
Design on 245/70R17.5 Truck and Bus Radial Tire
  
DOI：
中文关键词: 全钢载重子午线轮胎；结构设计；施工设计；强度；耐久性；速度性能
英文关键词: truck and bus radial tire；structure design；construction design；strength；endurance；speed performance
基金项目:
中图分类号:U463.341＋.3/.6
Author NameAffiliation
DING Ning Shandong Linglong Tire Co.，Ltd 
LIU Xiao–fang Shandong Linglong Tire Co.，Ltd 
MA Xiao–gang Shandong Linglong Tire Co.，Ltd 
SUI Hai–tao Shandong Linglong Tire Co.，Ltd 
SONG Yan–yan Shandong Linglong Tire Co.，Ltd 
WU Xiang–xin Shandong Linglong Tire Co.，Ltd 
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中文摘要:
      介绍245/70R17.5全钢载重子午线轮胎的设计。结构设计：外直径　788 mm，断面宽　247 mm，行驶面宽度　205 mm，行驶面弧度高　8.5 mm，胎圈着合直径　443.5 mm，胎圈着合宽度　203.2 mm，断面水平轴位置（H1/H2）　0.998 5，胎面采用块状花纹设计，花纹深度　18 mm，花纹饱和度　70.5%，花纹周节数　50。施工设计：胎面采用胎面胶、基部胶和过渡胶三复合结构，胎体采用3×0.24/9×0.225＋0.15HT高强度钢丝帘线，1#和2#带束层采用0.365＋6×0.35HT钢丝帘线，3#带束层采用3×4×0.22HE钢丝帘线，0°带束层采用2层3×7×0.20HE钢丝帘线，采用三鼓一次法成型机成型、热板式定型硫化机硫化。成品性能试验结果表明，成品轮胎的外缘尺寸、强度性能、耐久性能和速度性能均符合相关设计和标准要求。
英文摘要:
      The design on 245/70R17.5 truck and bus radial tire was described.In structure design，the following parameters were taken：overall diameter　788 mm，cross–sectional width　247 mm，width of running surface　205 mm，arc height of running surface　8.5 mm，bead diameter at rim seat　443.5 mm，bead width at rim seat　203.2 mm，maximum width position of cross–section (H1/H2)　0.998 5，block tread patterns，pattern depth　18 mm，block/total ratio　70.5%，and total number of pitches　50.In construction design，the following processes were taken：three layer extruded tread，3×0.24/9×0.225＋0.15HT steel cord for carcass ply，0.365＋6×0.35HT steel cord for 1# and 2# belt ply，3×4×0.22HE steel cord for 3# belt ply，two plies of 3×7×0.20HE steel cord for 0° belt ply；and using three–drum single stage building machine to build tires and hot curing press to cure tires.It was confirmed by the finished tire test that，the inflated peripheral dimension，strength，endurance and speed performance met the requirements of design and corresponding standards.
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