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Slewing ring raceway delamination occurs how to fix?

Keywords:Slewing,Slewing ring

After delamination occurs, it must be promptly repaired. Otherwise, delamination area will be expanded to the entire slewing bearing scrap.

The fix
First ball or roller slewing ring inside out, separating the inner and outer ring; then gasoline to clean the raceway; then carefully peel layer surrounding the needle, Microsoft has been generated by the United States District grinder (wheel) crack the hardened layer rubbed off, the bottom layer of peel polished; raceway needs welding and cutting torch used at the preheating, with (to be dried before use electrodes, and as baking) carbon steel welding rod, To make the solder layer is slightly higher than the raceway surface 1-2mm; if delamination deeper or larger, should be layered sub-welding, not the base material caused by high temperature deformation; this avoids rapid cooling weld cracking It should be taken immediately after welding insulation measures, so that he gradually cooled. After cooling, polished with a grinder repair welding layer, it is slightly higher than the raceway surface, oil stone or emery cloth metallurgical gradually grinding welding layer table, making it highly consistent with the raceway surface normal, with the corresponding original curvature model testing, until qualified so far; clean with gasoline raceway and roller (ball) on grease, integrally assembled to complete.

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