215/70R17.5 14PR全钢载重子午线轮胎的设计

Design on 215/70R17.5 14PR Truck and Bus Radial Tire

介绍215/70R17. 5 14PR全钢载重子午线轮胎的设计。结构设计:外直径770 mm,断面宽217 mm,行驶面宽度175 mm,行驶面弧度高9. 9 mm,胎圈着合直径442. 5 mm,胎圈着合宽度170 mm,断面水平轴位置(H1/H2) 1. 1,胎面采用自锁型Z-Z刀槽花纹,变节距设计,花纹深度13. 5 mm,花纹饱和度80%,花纹周节数61。施工设计:胎面采用热、冷喂料双复合挤出,采用4层带束层结构,1~#,2~#和3~#带束层均采用3×0. 2+6×0. 35HT钢丝帘线,4~#带束层采用5×0. 30HI钢丝帘线,胎体采用3+9×0. 22+0. 15HT钢丝帘线,采用三鼓一次法成型机成型、双模B型热板硫化机硫化。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符合设计及国家标准和企业标准的要求。

The design on 215/70 R17. 5 14 PR truck and bus radial tire was described. In the structure design,the following parameters were taken:overall diameter 770 mm,cross-sectional width 217 mm,width of running surface 175 mm,arc height of running surface 9. 9 mm,bead diameter at rim seat 442. 5 mm,bead width at rim seat 170 mm,maximum width position of cross–section(H1/H2) 1. 1,self locking Z-Z siping tread pattern,variable pattern pitch,pattern depth 13. 5 mm,block/total ratio 80%,and number of pattern pitches 61. In the construction design,the following processes were taken:co-extruded tread using hot and cold feedings,4 layer belts structure,3×0. 2+6×0. 35 HT steel cord for 1~#,2~# and 3~# belt,5×0. 30 HI steel cord for 4~# belt,3 + 9×0. 22 + 0. 15 HT steel cord for carcass,using three-drum single-stage building machine to build tires,and double-mold B-style hot plate press to cure tires.It was confirmed by the finished tire test that,the inflated peripheral dimension,strength and endurance met the requirements of the design,national standards and enterprise standards.