全钢载重子午线轮胎胎肩气泡产生原因及解决措施

Causes Analysis and Counter Measures of Shoulder Blister of Truck and Bus Radial Tire

对全钢载重子午线轮胎胎肩气泡产生原因进行分析,并提出相应的解决措施。从结构设计、半成品部件和成型方面分析胎肩气泡产生原因,通过采取重新设计胎面和垫胶尺寸,调整带束层宽度;严格控制车间温度和湿度,保证物料存放条件,增大胎面基部胶宽度;根据不同胎面调整压合压力,校正后压辊精度等措施,有效解决了全钢载重子午线轮胎胎肩气泡问题。通过加强现场工艺监控措施,明显减小了胎肩气泡发生几率。

The causes of shoulder blisters in truck and bus radial tire were analyzed,and the corrective solutions were put forward. The effects of structure design,semi-finished parts and molding process were investigated. It was found that,by redesigning tread and pad size,adjusting belt width,strictly controlling workshop’s temperature and humidity,ensuring material storage conditions,increasing tread base compound width,adjusting pressure and correcting roller precision according to different tread,the problem of shoulder blisters of truck and bus radial tire was effectively solved. By strengthening on-site process monitoring,the defect rate of shoulder blisters was significantly reduced.