The Idling gear checkout equipment is Mitoyo contourgraph and gear surface hardness of ≤230HB,The product is the transmission structural steel, structural steel is generally divided into quenching and tempering structural steel and surface hardening structural steel.

The production process

According to the requirements of steel type and steel quality, the smelting of alloy structural steel can use oxygen top blown converter, open hearth furnace and electric arc furnace; Or add electroslag remelting, vacuum degassing. Ingot casting can be continuous casting or die casting. The steel ingot should be cooled slowly or hot sent to forge and roll.

Surface hardened structural steels are used to make parts, such as gears and shafts, that are hard and wearable on the surface but flexible at the core. In order to make the core of the parts of high toughness, the carbon content in the steel should be low, generally in 0.12~0.25%, while there is an appropriate amount of alloy elements, to ensure appropriate hardenability.