Causes of brake drum cracking
Release Time:
2019-08-21
Brake drums are also called brake pots. In a car's braking system, brake drums are crucial components. The quality of the brake drum directly determines the effectiveness of self-braking and even relates to driving safety, so choosing a qualified automotive brake drum is vital. Below, we'll explore the reasons why brake drums crack.During braking, due to dry friction and high friction, brake drums often overheat and turn red. At this time, staff often pour tap water onto the brake drums to lower their temperature. The brake drum continuously generates heat through strong friction, increasing its surface temperature. Using tap water to cool the brake drum acts as a quenching process, increasing local hardness, internal stress, and cold brittleness of the surface layer. At the same time, due to the repeated action of tangential forces, local cracks germinate at the block carbides and inclusions in the surface layer, and with the action of irregular alternating impact forces, the crack propagation in these areas is accelerated.
Related News
