Fried. Krupp Huttenwerke Ag

Krupp Stahl Aktiengesellschaft

Crio Ice Gmbh & Co. Kg

Reinhard Schweitzer

Wilhelm Heller

Jurgen Flugge

Lutz Weber

Walter Knoor

Günter Kirschenmann

The present invention relates to a process for reducing internal stresses of roller straightened rails. After the straightening operation the rail web portion is heated for a short time to temperatures ranging between 200.degree.-700.degree. C., preferably between 350.degree.-500.degree. C., and after reaching the desired temperatures the rail is cooled by air to room temperature. For the purpose of heating the rail is continuously conveyed in front of the heating apparatus. The inventive process permits to reduce internal stresses in the rail head and base portions to a value of less than 50 N/mm.sup.2 thus ensuring increased rupture strength of the rail.

Method for reducing internal stresses of roller straightened rails

Abrasion resistant rails or rail wheels formed from a steel alloy having between 0.02 to 0.35 percent by weight of lead or bismuth, and a process for the production of the same comprising alloying 0.02 to 0.35 percent by weight of lead or bismuth with a rail or rail wheel steel.

Abrasion resistant rails and/or rail wheels, and process for producing

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Dusseldorf, Germany

Reinhard Schweitzer