Type of Steel Rails

Since the invention of the rail Steel Rails in 1767, has gone through more than 230 years, with the development of railway technology, rail section has also experienced from the flat to T-shaped to U-shaped process, that 1864 was finally fixed for the I-shaped.
According to the Steel Rails use of different, modern rail can be divided into three categories:
1, China Coal brand light Steel Rails for the mine with 8kg / m, 9 kg / m, 12 kg / m, 18 kg / m, 22 kg / m, 24 kg / m, 30 kg / m eight.
2, for the passenger and cargo railway with the heavy cabinet, the use of heavy rail rails are 38 kg / m, 43 kg / m, 50 kg / m, 60 kg / m, 75 kg / m five kinds. There are also changing the track with the track, there are 50AT, 60AT two.
3, the supply of crane rails with the crane rail, there QU70, QU80, QU100, QU120 four specifications.
Rail according to the choice of different materials, can also be divided into different quality, divided into high-quality carbon rail, alloy rail and the whole field heat treatment track three:
1, high-quality carbon tracks are mainly carbon and manganese elements to improve the strength and improve human nature, sulfur, phosphorus content control in 0.030% below the main grades U74, U71Mn.
2, the alloy rail is based on the carbon track, adding appropriate alloying elements such as V, Ti, CRr, Mo, etc., thereby enhancing the strength and toughness of the rail, China's alloy rail is RE-Nb rail, RE-Cr and V -Ti rail, the main grades are U76RENB, U75V, U76CrRE.
3, full-length heat treatment track is mainly above the two rails for the material through the heating and cooling control of the heat treatment process to improve its internal structure, grain refinement, the formation of pearlite structure, so that the rail to obtain high strength and high toughness.

Find Steel Rails, must China Coal Steel Rails, high quality Steel Rails