How to repair welding rail?What kind of electrode is used in rail welding? What's the problem easily?
Repair welding is found when pitting corrosion pits local rail surface, affecting the smooth operation of the train, but the rail has not reached the need to replace the degree, can be used in welding repair: first by flame heated to a certain temperature, and then use the welding welding, using heat to control the cooling speed. When reduced to a certain temperature. The grinding wheel along the longitudinal smoothing.
The rail welding is divided into the docking and repair welding. Rail butt can use aluminium heat welding, with aluminum and iron oxide mixed in proportion, with mold fixed rail, fill the thermite at the seams, lit by magnesium. Because the operation is complex, the heat affected zone, is now rarely used now commonly used. Use special welder. But after welding to reduce the total length of a point.
