INCREASING DURABILITY OF DRIVING AXLE ELEMENTS OF MAZ AUTOMOBILES BY MEANS OF VARIOUS THERMAL AND CHEMICAL-THERMAL TREATMENT

Mikhailyuk A.I., Candidate of Technical Sciences, Minsk Automobile Plant, Minsk, Republic of Belarus

Belsky S.E., Candidate of Technical Sciences, Belarusian State Technological University, Minsk, Republic of Belarus

Pischov M.N., Candidate of Technical Sciences, Belarusian State Technological University, Minsk, Republic of Belarus

61-65

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 &#928&#928 volumetric-surface hardened steel to be used in bevel gear wheels.

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

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