10.00R20 18PR全钢载重子午线轮胎的轻量化设计

Design on 10.00R20 18PR All-steel Truck and Bus Radial Tire

介绍10.00R20 18PR全钢载重子午线轮胎的轻量化设计。结构设计:外直径1 046 mm,断面宽270 mm,行驶面宽度215 mm,行驶面弧高度7.9 mm,胎圈着合直径511 mm,胎圈着合宽度203 mm,断面水平轴位置(H1/H2)1.034,花纹深度20.5 mm,花纹饱和度62.98%,花纹周节数53。施工设计:胎面由胎面胶、基部胶和过渡胶片组成,1~#和2~#带束层采用3×0.20+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,胎体采用3+9+15×0.22+0.15NT钢丝帘线,采用三鼓成型机成型、热板硫化机硫化。成品性能试验结果表明,成品轮胎的外缘尺寸、强度性能、耐久性能和高速性能均达到设计和相关标准要求。

The design on lightweight 10.00 R20 18 PR all-steel truck and bus radial tire was described.In structure design,the following parameters were taken：overall diameter 1 046 mm,cross-sectional width 270 mm,width of running surface 215 mm,arc height of running surface 7.9 mm,bead diameter at rim seat 511 mm,bead width at rim seat 203 mm,maximum width position of cross–section（H1/H2） 1.034,pattern depth 20.5 mm,block/total ratio 62.98%,and number of pattern pitches 53.In construction design,the following processes were taken：tread consisting of tread compound,tread slab base and transition strip,3×0.20＋6×0.35 HT steel cord for 1# and 2# belts,5×0.30 HI steel cord for 3# belt,3×7×0.20 HE steel cord for 0° belt,3 ＋ 9 ＋ 15×0.22 ＋ 0.15 NT steel cord for carcass,using three-drum building machine to build tire and hot plate press to cure tire.It was confirmed by the finished tire test that,the inflated peripheral dimension,strength,endurence and high speed performance met the requirements of the design and corresponding standards.