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460 heavy truck gear material selection, according to the strength, toughness and process performance requirements, comprehensive consideration. Combined with the reality of our country, 460 heavy truck gear should choose low carbon alloy carburized steel. For gears bearing heavy loads and impact loads, Ni-Cr and Ni-Cr-Mo alloy carburized steel is used. Compared with gears made of ordinary electric furnace steel, the contact and bending fatigue life of 460 heavy truck gear made of this steel can be increased by 3-5 times, and the limit load of 460 heavy truck gear is also greatly increased. The 460 heavy truck gear treated by heat treatment process can improve the gear material, appropriately increase the hardness, eliminate or reduce the local overload of the tooth surface, and improve the anti-spalling ability of the tooth surface.
