半钢子午线轮胎胎趾缺陷的原因分析及解决措施

Root Cause Analysis of Bead Toe Defects of Steel-belted Radial Tire and Corrective Actions

分析半钢子午线轮胎胎趾缺陷的产生原因,并提出相应解决措施。通过采取轮胎模具钢圈曲线角度和宽度合理取值、应用二次法成型工艺时胎侧宽度减小并在内衬层上预复合胎圈包布或耐磨胶片、二次法成型机采用聚氨酯环式机头、设计合适的钢丝圈内径,合理存放和转运胎坯以及加强工艺管理并提高员工质量意识等措施,可以大幅减少轮胎胎趾缺陷,降低消耗的同时提高成品轮胎质量。

The causes of bead toe defects of steel-belted radial tire was analyzed,and the corrective actions were proposed.By adopting a reasonable value for the angle and width of the bead curve of the tire mold,reducing the sidewall width when the secondary molding process was applied,pre-compounding the bead cloth or wear-resistant film on the inner liner,using polyurethane ring head for the two-stage building machine,designing appropriate inner diameter of the bead,implementing reasonable storage and transfer of the green tires,strengthening the process management and raising the quality awareness of the staff,the bead toe defects of steel-belted radial tire could be reduced significantly,the material consumption was reduced and at the same time the quality of finished tires was improved.