How to Repair a Slightly Bulged Car Tire?
1 Answers
Repair method for a slightly bulged car tire is hot patching. Below are detailed explanations regarding tire bulges: 1. Causes of Bulging: Generally, it is not recommended to repair or remedy a bulged car tire because the bulge is caused by broken cords, which cannot be repaired and require replacement. The reason for tire bulging lies in the tire's inner structure, which consists of a carcass layer without steel wires, only nylon cords that prevent the internal gas from bulging outward. This is the primary function of the carcass layer, serving as the skeleton of the entire tire. When several cords break simultaneously, only the elastic rubber remains to support that area, and under pressure, the rubber forms a bulge. 2. Repair: If the bulge is relatively small, some repair shops might opt for hot patching as a repair method. Hot patching, also known as vulcanization repair, involves using high-temperature vulcanization to fuse raw rubber into the tire's wound, which then cools and solidifies to seal the wound. Compared to internal patch repairs, hot patching is more versatile for various types of tire damage. However, hot patching a bulge does not fundamentally address the issue of broken cords. Moreover, hot patching demands higher technical skills from the technician, as excessive vulcanization time can lead to over-vulcanization, resulting in severe tread brittleness, groove chipping, cracking, and surface bluing. Insufficient vulcanization time, on the other hand, can cause under-vulcanization, making the repaired area prone to detachment. To avoid oversights or technical deficiencies during the repair process, it is generally recommended to replace the tire directly rather than attempting a repair.
