Nature of metal drop displacement during deposit welding elements of railway transport

The transformation of the microstructure of the heat-strengthened steel 65G section deposited with an electrode with a low-carbon rod is complex. Increased hardness values of individual areas contribute to an increase in the abrasive wear resistance of the part. The presence of a fusion zone ensures the resistance of the deposited area of an element on railway transport to cracking. The use of electrodes with a low-carbon rod is advisable when carrying out surfacing reinforcement of heat-hardened steels. The authors obtained mathematical expressions for the speed of displacement of a metal drop falling from the electrode material and the path it traverses when deposit welding elements on railway transport. They show that the displacement of this drop is accompanied by acceleration followed by deceleration. In electromagnetic deposit welding, the experimental assessment of the level of circumferential and radial residual thermal stresses during deposit welding of a coating on a hollow cylinder is of considerable practical interest. As an example, the calculation and experimental analysis of the stress state during deposit welding of the cylinder on the inner surface is made. He showed that residual compressive stresses, significant in magnitude, are formed on the outer surface. The method, which is limited to cutting the cylinder along the generatrix, without subsequent layer-by-layer removal of metal from its inner surface, is a simple and effective method for determining the circumferential residual stresses that provides the required accuracy.


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  • Accession Number: 01853584
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 29 2022 4:57PM