Graphite steel is a combination of graphite and steel, in which graphite particles are part of the structure and mainly assumes the role of reinforcing the metal matrix while increasing its wear resistance. The combination of graphite and metal matrix is in the form of a composite. It is a combination of metal matrix reinforced by graphite. The manufacturing process of graphite steel is similar to that of cast iron. The metal matrix is melted and poured into a mould, and then solidified. The metal matrix solidification can form graphite and metal combination to enhance the wear and corrosion resistance of the product.
Graphite steel is composed of metal matrix containing graphite particles and graphite flakes dispersed in it. The metal matrix of graphite steel is made of low sulfur and phosphorus iron, and the graphite particles mainly exist in lamellar form, accounting for about 6% of the total mass of the material. In addition, it also contains trace alloy elements such as silicon and manganese. These alloying elements can greatly improve the performance of graphite steel.
In general, graphite steel has the following characteristics:
1. Superior wear resistance. The graphite particles in graphite steel can play the role of solid lubricant under certain conditions, and reduce the friction between the surfaces in contact, thus effectively reducing the wear.
2. Excellent corrosion resistance. The graphite particles in the graphite steel can form a protective film on the surface due to the oxidation reaction, which can prevent the corrosion of the metal matrix, achieve the purpose of anti-corrosion, and extend the service life.
3. High strength and hardness. The combination of graphite particles and metal matrix can improve the overall strength and hardness of graphite steel, make it more resistant to cutting force and impact force, and improve its service life.
In addition to the above characteristics, graphite steel also has the advantages of high thermal conductivity and thermal shock resistance, which can guarantee its stability and service life in high temperature environment.
Graphite steel is widely used in various manufacturing industries due to its superior performance. It is mainly used in agricultural machinery, metallurgical machinery, energy and railway transportation. In agricultural machinery industry, graphite steel is mainly used as structural parts and working parts in the manufacturing process, such as tractors, combine harvesters, trucks, bucket teeth and blades. In the metallurgical industry, graphite steel is mainly used as seals, nozzle sleeves and furnace rollers. In the energy industry, graphite steel is a very important material because of its thermal shock resistance and wear resistance, and is mainly used in nuclear power industry, hydroelectric power industry and hot-rolled steel industry. In the railway transportation industry, graphite steel can be used to make railway vehicles and railway track switches, and its superior wear resistance and corrosion resistance can ensure the stable performance and service life of railway vehicles and track switches.
In summary, graphite steel is a metal matrix reinforced with graphite particles. It has superior wear resistance, corrosion resistance and high strength. In addition, it also has the advantages of high thermal conductivity and thermal shock resistance. It is widely used in various manufacturing industries, such as agricultural machinery, metallurgy, energy, railway transportation and so on. Its application can make the manufacturing industry more efficient, reduce the cost and improve the production efficiency.