12R22.5全钢载重子午线轮胎的设计
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摘要
介绍12R22.5全钢载重子午线轮胎的设计。结构设计:外直径1 078 mm,断面宽292 mm,行驶面宽度228 mm,行驶面弧度高7.4 mm,胎圈着合直径570.5 mm,胎圈着合宽度228.6 mm,断面水平轴位置(H_1/H_2)0.999 6,采用纵向直沟花纹设计,花纹深度15.5 mm,花纹饱和度77.3%,花纹周节数30。施工设计:胎面采用分层挤出,采用4层带束层结构,其中1~#,2~#和3~#带束层采用3×0.20+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+15×0.175+0.15NT钢丝帘线,采用一次法成型机成型、热板式氮气硫化机硫化。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达到设计和国家标准要求,高速性能达到企业标准要求。
The design on 12R22.5 truck and bus radial tire was described.In the structure design,the following parameters were taken:overall diameter 1 078 mm,width of cross-section 292 mm,width of running surface 228 mm,arc height of running surface 7.4 mm,bead diameter at rim seat 570.5mm,bead width at rim seat 228.6 mm,maximum width position of cross–section(H_1/H_2)0.999 6,longitudinal straight grooves for tread design,pattern depth 15.5 mm,block/total ratio 77.3%,and number of pattern pitches 30.In the construction design,the following processes were taken:co-extruded tread,four-layer belt structure,3×0.20+6×0.35HT steel cord for 1~#,2~#和3~# belt,5×0.30HI steel cord for 4~# belt,3+9+15×0.175+0.15NT steel cord for carcass,using one-stage 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,endurance met the requirements of design and national standards,and the high speed performance met the requirements of enterprise standard.
The design on 12R22.5 truck and bus radial tire was described.In the structure design,the following parameters were taken:overall diameter 1 078 mm,width of cross-section 292 mm,width of running surface 228 mm,arc height of running surface 7.4 mm,bead diameter at rim seat 570.5mm,bead width at rim seat 228.6 mm,maximum width position of cross–section(H_1/H_2)0.999 6,longitudinal straight grooves for tread design,pattern depth 15.5 mm,block/total ratio 77.3%,and number of pattern pitches 30.In the construction design,the following processes were taken:co-extruded tread,four-layer belt structure,3×0.20+6×0.35HT steel cord for 1~#,2~#和3~# belt,5×0.30HI steel cord for 4~# belt,3+9+15×0.175+0.15NT steel cord for carcass,using one-stage 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,endurance met the requirements of design and national standards,and the high speed performance met the requirements of enterprise standard.
引文