Increasing Durability of Driving Axle Elements of MAZ Automobiles by Means of Various Thermal and Chemical-Thermal Treatment

Abstract

The paper analyzes conditions and main reasons for destruction of main gear and wheel reduction gear of driving axles in MAZ automobile. A mathematical model of stress of bevel drive teeth has been developed; the reasonability of improving their thermal and chemical-thermal treatment has been proven. The research proposes to replace 20XH3A steel by 60 ПП volumetric-surface hardened steel to be used in bevel gear wheels.

Keywords

• gears
• transmission
• stress state
• chemical and heat treatment
• body-surface hardening
• main transmission
• gears reduction
• front axle