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Hot Rolled 16MnCr5 42CrMo4 Gear Steel Round Bar For Making Reducers
Specifications
1). Material: 45#, 16MnCr5, 35SiMn, 40Cr, 40CrNi, 40MnB, 42CrMo, 35CrMo, as per customer’s requirement
2). Packing: standard sea-worthy packing
3). Surface treatment: punched, welded, painted or as per customer’s requirement
4). Size: according to customer’s requirement
Development of Gear Steel
Gear steel is one of the key materials with high requirements in special alloy steel used in automobiles, railways, ships and construction machinery, and it is also the manufacturing material of core components to ensure safety. In recent years, gear steel is developing in the direction of high performance, long service life, stable gear operation, low noise, safety, low cost, easy processing and various varieties.
Classification of Gear Steel Materials
The commonly used materials for gear steel are forged steel and cast steel. Among them, cast steel is generally used in the manufacture of gears with a diameter greater than 400mm and a complex structure that is not suitable for forging. In other cases, forged steel is more suitable. The forged steel used According to the tooth surface hardness is also different:
1). Soft tooth surface
Tooth surface hardness less than 350mm is called soft tooth surface, the commonly used gear steel for soft tooth surface is 45# steel, 35SiMn, 40Cr, 40CrNi, 40MnB.
2). Hard tooth surface
Tooth surface hardness greater than 350mm is called hard tooth surface. The gear steel used for hard tooth surface can be divided into medium carbon steel and low carbon steel. Medium carbon steel includes 35# steel, 45# steel,
40Cr, 40CrNi, 42CrMo, 35CrMo, etc. Low carbon steel includes 20Cr, 20CrMnTi, 20MnB, 20CrMnTo, etc.
Application
1) 42CrMo gear steel has the characteristics of high strength, high harden-ability, good toughness, small deformation during quenching, high creep strength and durable strength at high temperature.
Used to manufacture forgings that require higher strength and larger quenched and tempered sections than 35CrMo steel, such as: large gears for locomotive traction, supercharger transmission gears, pressure vessel gears, rear axles, extremely loaded connecting rods and springs It can also be used for oil deep well drill pipe joints and fishing tools below 2000m; and can be used for molds of bending machines, etc.
2) 20CrMnTiH gear steel is a carburizing steel with good performance, high harden-ability, hard and wear-resistant surface and tough core after carburizing and quenching, high low temperature impact toughness, medium weld-ability, and can be welded after normalizing Good machinability.
It is used to manufacture important parts with a cross-section
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