Design of 12R22.5 18PR GX58 Tubeless All-steel Truck and Bus Radial Tire
ZHAO Haibin;WU Suhua;Tianjin University of Science and Technology;Yinchuan GITI Tire Co.,Ltd;
This paper introduced the design of 12 R22. 5 18 PR GX58 tubeless all-steel truck and bus radial(TBR) tire. In the structure design,the following parameters were taken:overall diameter 1 094 mm,cross-sectional width 295 mm,width of running surface 250 mm,arc height of running surface 8. 8 mm,bead diameter at rim seat 569. 5 mm,bead width at rim seat 254 mm,maximum width position of cross-section(H_1/H_2) 0. 838,pattern block/total ratio 72. 68%,and with GX58 center symmetric block pattern. In the construction design,the following processes were taken:twopiece and two-formula tread,1 layer of 0. 25 + 6 + 12×0. 225 HT steel cord for carcass ply,2 layers of 3+8×0. 33 HT steel cord,1 layer of 5×0. 35 HI steel cord and 1 layer of 3×7×0. 20 HE steel cord for belt,using single stage three-drum forming machine to build tires,and 1 615 mm(65 inches) type B vulcanization machine to cure tires. The inflated peripheral dimension,strength property,endurance performance and high speed performance of the finished tire met the requirements of the design and national standards.
【CateGory Index】： TQ336.1