Method of improving quality and reliability of welded rail joint properties by ultrasonic impact treatment
A technology of ultrasonic shock and pulse treatment, applied in heat treatment furnaces, welding equipment, welding equipment, etc., can solve problems such as internal cracks, inclusions, porosity, low tensile ductility, etc., to reduce internal stress and optimize heat exchange The effect of exchanging with quality
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[0086] The present invention relates to the repair of parts of rails joined together by welding by reworking the welded joints using the Ultrasonic Impact Treatment (UIT) process before welding, during welding, after welding, or during repairing of the rails. improvements in the performance of the segment, such as heat or heat flux welding, such as thermite or copper heat welding, and welding processes such as arc welding, gas pressure welding, and flash welding, where reprocessing includes the use of ultrasonic An impact tool applies an ultrasonic impact treatment either manually or automatically, continuously or in batches, to treat a joint around a joint and / or a length of track for the purpose of improving fatigue life and / or other properties of welded track sections.
[0087] The ultrasonic shock treatment according to the invention results in a reduction, compensation and redistribution of the internal stresses and produces favorable compressive stresses in the welded joi...
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