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According to the  Steel Rail Supplier , there are many professional  Steel Track  welding companies now, specializing in providing first-class rail seamless rail welding tasks. There are four types of rail welding methods: arc welding, air pressure welding, flash welding and aluminothermic welding. These four welding methods have different characteristics. 1. The new arc welding methods are: forced forming arc welding, automatic narrow gap active gas shielded welding, etc. Studies have shown that the static bending, drop weight, fatigue and mechanical properties of rail arc welding joints all surpass that of aluminium thermal welding joints, which is close to the joint performance of flash welding and air pressure welding. 2. There is no casting structure in the gas pressure welding zone, the temperature gradient of the joint is small, the crack sensitivity is very small, no high-power PowerPoint is required, and it is mainly used for joint welding on site. 3...

The  GB standard steel rail  is divided into high-quality carbon rails, alloy rails and full field heat treatment rails according to the materials selected. 1. High-quality carbon rail mainly has carbon and manganese elements to improve strength and improve toughness. Sulfur and phosphorus content are controlled below 0.030%, and the main grades are U74 and U71Mn. 2. The alloy rail is based on the carbon rail, adding appropriate alloying elements such as V, Ti, Cr, Mo, etc. to improve the strength and toughness of the rail. The alloy rails in China are RE-Nb rails, RE-Cr rails and V-Ti rail, the main brands are U76RENB, U75V, U76CrRE. 3. The full-length heat-treated rail is mainly the heat treatment process of the above two rails for heating and controlling cooling of the plain rail, improving the internal structure, refining the crystal grains, and forming the pearlite structure, thereby obtaining high strength and high toughness of the rail. We are  steel ...

Along with the progress of social economic growth, all kinds of steel products have captured the attention of this current market, the existence of heavy rail is that the typical steel merchandise, is the key product, which has brought great concern of the society from all walks of existence, of heavy rail joint control requirement of this phase error, want to know the following specific knowledge simple customers friend. Artificial laid  heavy steel rail , in order to decrease the number of railroad sawing, dealing with 500 m within the scope of the tool rail online for gauging, matching use, so as to prevent joint phase fault phenomenon of quantity to transcend bidding, if there's an actual construction issue, can be confirmed by the onsite technical employees, document, take railroad sawing, drilling to solve. When mechanical railing paving, the curve section adjusts the joint phase error by adjusting the internal and external railing seam, i.e., the internal rail seam decr...

Chinese rails can be divided into  crane rail , heavy steel rail and light steel rail in kilograms per square meter. 1. The crane rail is divided into four types: QU120, QU100, QU80, QU70. The material is generally manganese steel. The single weight is QU120 up to 118kg/m. 2.  Heavy steel rail . According to the steel used, the steel can be divided into ordinary manganese-containing rails, copper-containing carbon steel rails, high-silicon copper-containing steel rails, copper rails, manganese rails, silicon rails, etc. There are three main types: 38kg, 43kg and 50kg. In addition, there are 45kg rails for a few lines, and 60kg rails are planned for use on lines with high traffic and high speed. 3.  Light steel  rail . There are mainly different rail types such as 9kg/m, 12kg/m, 15kg/m, 22kg/m, 30kg/m. Each country in the world has its own standards for the production of rails, and the classification methods are also different. Such as British standard...

Super Costs Rail Steel qualities: From heavy-haul to city transportation Given that its very starting, the train system has actually been driven by a consistent demand for more growth.  Heavy-haul railways  have focused lasting on enhancing the yearly throughput by elevating axle loads and boosting train sizes and also train regularities. Although some demands such as high axle tons and also yearly tonnages specify for heavy-haul railways, others such as really tight contour span or the need for maintenance innovations are mainly existing in city railways. But both are joined in the need for advanced track components which supply appropriate material resistance for long-service lives and little upkeep needs as the available maintenance home windows are obtaining smaller sized as well as smaller sized. Based on the expertise concerning the positive effect of the hypereutectoid material principle (C > 0.9 per cent) on the efficiency of  12m Heavy Steel Rail supply...