Application of 3+8×0.21ST Steel Cord in Carcass of All-steel Light Truck and Bus Radial Tire
The application of 3+8×0.21ST steel cord in carcass of all-steel light truck and bus radial tire was studied.The results showed that,compared with 3×0.24/9×0.225CCHT steel cord,3+8×0.21ST steel cord had smaller diameter and cord density,equivalent adhesive performance,and good calendering and cutting process performances.By using 3+8×0.21ST steel cord to replace 3×0.24/9×0.225CCHT steel cord in the carcass of 7.50R16LT all-steel light truck and bus radial tire,the inflated peripheral dimension,strength,high-speed performance and durability met the requirements of national standards,the comfortability was better,the rolling resistance and the single tire mass were reduced,and the cost was lower.
all-steel light truck and bus radial tiresteel cordcarcass