How is the gear made of SCM440 round steel?

As readers know, gears play an actuator role in engines or machines. Currently, there are many types of gear materials but depending on the technical requirements that choose different gear materials. Among the popular materials today can be listed as SCM440 steel. So, how is the gear made of SCM440 round steel?
1. Working condition of gear
Playing a transmission role in machinery and equipment, so gears must work in harsh conditions such as:
 - Gears are subject to cyclic loads;
 - During work, the surface is abraded by friction;
 - Cores subjected to bending stress;
 - The root area is easily destroyed;
 - Possibility of strong impact.

                                             How is the gear made of SCM440 round steel?
2. How is the gear made of SCM440 round steel?
To create a gear part that can be durable enough to withstand working intensity, a material is required to meet the requirements: Wear resistance, balance of hardness and ductility.
a. Chemical composition of solid steel SCM440
 - Carbon content accounts for about 0.28% - 0.43%;
 - Chromium content accounts for about 0.9% - 1.2%;
 - Molipden content accounts for about 0.15% - 0.3%;
 - Silicon content accounts for about 0.15% - 0.35%;
 - Manganese content accounts for about 0.6% - 0.85%;
 - Phosphorus content accounts for about <= 0.03%;
 - Sulfur content accounts for about <= 0.03%;
b. Base to choose SCM440 solid steel as a gear
After researching and working with many units, SCM440 solid steel is used as a suitable choice for the following reasons:
 - Resistant to abrasion during operation while ensuring the core remains tough and resistant to impact.
 - SCM440 solid steel with chromium content from 0.9% to 1.2% helps improve permeability.
 - SCM440 solid steel also adds about 0.25% Molipden will improve the anti-ram, used for parts with an average diameter of over 50mm and relatively complex shapes such as gears, ...
 - SCM440 solid steel with medium carbon content has good strength, hardness, ductility and toughness.
 - In addition, SCM440 also possesses high resistance to deformation and abrasion.
 Hopefully the above information will solve the problems that readers are having. If you want more detailed advice on the type of industrial steel, readers can contact 0332 91 61 61 or chat online with us.
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