We are China Guangrao International Auto Wheel Expo. Today let we talk zhout the the tire quality problem. How to improve the quality of tires and reduce the failure rate is the goal of the major manufacturers for many years. The tire quality problem is manifested in the fact that the appearance of the tire is more serious, the shoulder drum and the outer surface of the tire are seriously worn off and puncture.

(1) From the perspective of the dicing, the tread is not wearable.

(2) Measuring 75 degrees of 600-9 with a hardness tester, and less than 65 degrees of 650-10, indicating that there are two reasons for the excessive or excessive sulfur in the tire, which is caused by stuffing the pot during the vulcanization process or prematurely. of.

(3) Further analysis, the materials used may be incorrect, such as the use of N220 carbon black, replaced with N330, with the wrong material.

(4) Or the tread extrusion, using the wrong rubber number, not using the tread rubber or the proportion of mixing is too large.

(5) If a large area appears, the formulation performance may not meet the requirements, or the technical implementation of the curing time is too short and too long.