What Causes a Brake Drum to Crack?
1 Answers
A cracked brake drum is typically caused by the braking force exceeding its load-bearing capacity or due to external impact and compression. Below are detailed explanations: 1. Causes: Insufficient shear strength of the brake lining, poor material quality, or inadequate manufacturing processes can lead to cracking. Additionally, overheating from high-speed or continuous braking may cause cracks to form. It is recommended to replace cracked brake linings promptly. 2. Brake Lining Composition: Generally composed of a steel plate, bonded heat insulation layer, and friction block. The steel plate undergoes anti-rust coating, with the coating process monitored by an SMT-4 furnace temperature tracker to ensure quality by detecting temperature distribution. The heat insulation layer consists of non-conductive materials designed to insulate heat. The friction block is made of friction materials and adhesives, which create friction when pressed against the brake disc or drum to decelerate the vehicle. Due to friction, the friction block gradually wears down, with lower-cost brake linings typically wearing out faster.