Application range of high manganese steel castings

The properties of high manganese steel are characterized by high hardness and brittleness.

 

Manganese steel is mainly used to withstand adverse working conditions such as impact, extrusion, material wear and so on. The main form of failure is wear consumption, partial fracture and deformation. There are three kinds of wear: friction and wear in which the surfaces of metal components contact with each other and move; abrasive wear caused by the impact of other metal or non-metallic materials on the metal surface and erosion wear caused by the contact between flowing gas or liquid and metal.

 

High manganese steel is very easy to work and harden, so it is difficult to process. Most of them are castings, and a very small amount of them are processed by forging. The casting property of high manganese steel is better. The melting point of the steel is low (about 1400 ℃), the temperature interval between the liquid and solid line of the steel is small (about 50 ℃), and the thermal conductivity of the steel is low, so the molten steel has good fluidity and is easy to be cast. The linear expansion coefficient of high manganese steel is 1.5 times that of pure iron and 2 times that of carbon steel, so the volume shrinkage and linear shrinkage of high manganese steel are large, and stress and cracks are easy to occur.