42crmo4 steel is the key product of Otai company, it is popular among our customer. I wound like to talk about 42crmo4 steel applies in the Gear making.
42crmo4 steel is the key product of Otai company, it is popular among our customer. It can be used in different industry. I wound like to talk about 42crmo4 steel applies in the Gear making.
Key performance requirements for high quality gear
High quality gear steel is mainly shown in three aspects: narrow end quenching zone, high purity and fine and uniform grain.
(1) end quench band
The stability of the hardenability of the end has a great influence on the quantity of heat treatment deformation of gear steel.
(2) purity
Purity mainly refers to the decrease of oxygen content and other harmful elements. The influence of oxygen content on the fatigue life of gears has been paid more and more attention. In order to improve the purity and reduce harmful inclusions, the content of Ti in gear steel should be limited, It is the source of fatigue crack.
(3) grain size
Grain size is another important index of gear steel, because coarse grain makes the concentration of penetration layer relative increase, resulting in the increase of brittleness, make the product strength decline, the tooth surface easy to peel off. If mixed crystals appear, the heat treatment deformation between the aging teeth may lose its rules and cannot be matched. In the aspect of structure control technology of gear steel, fine austenite grain is important to the stability of steel and its products, and is the basic property of high quality steel.
why is the 42crmo4 steel applies in the Gear making.
42CrMo4 steel material is a high quality Quenched and Tempered Alloy Structural steel . It belongs to the high quality medium carbon alloy steel, Oil Quenched & Tempered Hardenss is 28-34 HRC . Annealing delivery hardenss less than 250HB . This materials was the best choose for produce gears .It has high creep strength and durable strength at high temperature. Its hardenability is high, it has good toughness, the possibility of quenching deformation is small.
