The invention relates to a method for welding the steel rail and deck, which comprises: first, arranging the prepared support; then processing point welding, assembling, preheating, welding, heating, treating and detaching; detaching the rail in room temperature to be welded with the deck, while the connection is realized by sternum. The sternum and the deck are made from same material with better welding property. The invention has the advantages that: since the sternum is small with lower heat conductive speed, the rail and sternum can reach needed temperature before heating, to slow down the cooling speed of weld seam, and reduce the possibility and hardenability of martensite. And in heating, it can confirm the needed temperature of steel rail and sternum, to reduce the restrain stress of weld, to avoid the weld seam crack. |