Cast Iron Gear Castings
Cast iron materials have many applications, one of which is very common is the manufacture of open transmission gears.
Gray cast iron has graphite material, which can play a certain lubricating effect during work and greatly reduce friction. At the same time, gray cast iron has low cost and good processing performance. Therefore, it is widely used in the production of gears.
Gray cast iron gears are often used in gear system structures with low load carrying capacity, low transmission speed, and low impact resistance. But with a compact design. There are also ductile cast iron gears, which can be used in closed drive systems.
Ductile cast iron has good comprehensive mechanical properties, good process performance and low price,. That means it is an excellent material for manufacturing gears. At present, there are many application examples of ductile iron gears used in automobiles, tractors, agricultural machinery, machine tools. And there are also automobile rear axle spiral bevel gears, tractor transmission gears and so on.
Cast iron gears have higher requirements for wear resistance. Whereupon surface quenching treatment is required. This is very important to ensure the comprehensive performance of cast iron gears.