轻量化12R22.5无内胎全钢子午线轮胎的设计

Design of Lightweight 12R22.5 Tubeless All-steel Radial Tire

介绍轻量化12R22.5无内胎全钢子午线轮胎的设计。结构设计:外直径1 073 mm,断面宽292 mm,行驶面宽度215 mm,行驶面弧度高5.5 mm,胎圈着合直径569.5 mm,胎圈着合宽度240 mm,断面水平轴位置(H_(1)/H_(2)) 0.98,胎面采用4条S形花纹,花纹深度15.5 mm,花纹饱和度74.6%,花纹周节数57。施工设计:采用双复合挤出胎面,采用3层带束层+0°带束层结构,1#和2#带束层采用0.37+6×0.32ST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3×0.24/9×0.225ST钢丝帘线,采用一次法胶囊成型机成型、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、强度性能和耐久性能均满足国家标准和设计要求。

The design of a lightweight 12R22.5 tubeless all-steel radial tire was described.In the structural design,the following parameters were taken:overall diameter 1073 mm,cross-sectional width 292 mm,width of running surface 215 mm,arc height of running surface 5.5 mm,bead diameter at rim seat 569.5 mm,bead width at rim seat 240 mm,maximum width position of cross–section(H_(1)/H_(2))0.98,adopting 4 S-shaped patterns for tread,pattern depth 15.5 mm,block/total ratio 74.6%,and number of pattern pitches 57.In the construction design,the following processes were taken:using double composite extruded tread,using 3 layer belt+0°belt structure,0.37+6×0.32ST steel cord for 1#and 2#belt,5×0.30HI steel cord for 3#belt,3×7×0.20HE steel cord for 0°belt,3×0.24/9×0.225ST steel cord for carcass,using one-stage capsule molding machine to build tire and a steamer type vulcanizing press to cure tire.The finished tire performance test results showed that,the inflated peripheral dimension,strength and durability met the requirements of corresponding national standards and designs.