Effect of Cooling Process on Peripheral Dimension and Performances of Tire
The effect of the cooling process on the peripheral dimension and performances of tires was studied.The results showed that the natural cooling rate was higher than that of post-cure inflation cooling,but the size uniformity,radial stiffness,and durability of the post-cure inflation cooled tire were higher.Extending the post-cure inflation time and reducing the tire temperature at the endpoint of post-cure inflation could help reduce the tire size shrinkage rate.The tension of a single cord needed to be greater than the thermal shrinkage stress of the skeleton material at the initial cooling temperature.As the post-cure inflation pressure increased,the peripheral dimension of the tire tended to increase.The width of the post-cure inflation rim had little effect on the peripheral dimension of the tire.As the demolding time prolonged,the peripheral dimension of tires decreased,and the demolding time needed to be controlled.