Archives

Influence of part shape on deformation of truck gear

The shape of parts is a very important factor affecting the deformation size and deformation trend of heat treatment, which is unanimously recognized. If the shape of the part is complex, the shrinkage (or increase) of different sections during heat treatment is uneven, resulting in the deformation and uncontrollability...

spacer
spacer
spacer

Heat treatment deformation control of heavy truck gear

The research on heat treatment deformation control of heavy truck gearbox gear is of great practical significance and great practical value. (1) The material selection of the gear box of heavy-duty truck requires the hardenability to ensure that the tooth surface and center of the truck gear get the...

spacer

Heat treatment process of heavy truck gear

At present, foreign automobile manufacturers generally adopt isothermal annealing treatment for truck gear forging blank, and specify different isothermal annealing processes for different materials. For example, Volkswagen adopts isothermal annealing treatment of deformation waste heat, i.e. by treatment, and the forging blank of higher alloy truck gear is treated...

spacer
spacer

Steel for heavy truck gears

Foreign tests have proved that the supercooled austenite decomposition products during surface quenching of carburized steel are the main reason to reduce the fatigue resistance of truck gears, and internal oxidation just promotes this process. In order to reduce the effect of internal oxidation ‚ The content of Cr...

spacer

Situation of gear steel for heavy trucks in China

China’s truck gear steel basically follows the brand of the former Soviet Union. For a long time in the past, 20CrMnTi dominated the world. China’s truck gear not only has a single brand, but also has large fluctuations in steel composition, wide hardenability bandwidth and many inclusions, resulting in...

spacer
spacer

Truck gear processing technology

1. Introduction to truck gear processing The cold working routes of the three parts are basically the same: forging – pre heat treatment – rough and finish machining – carburizing quenching and tempering – shot blasting – a small amount of grinding. The pre heat treatment of the first...

spacer