FIELD: welding jobs.
SUBSTANCE: invention relates to methods of electric arc welding and can be used for railroad rails welding together. In compliance with the proposed method, first, metal peeling and spalling points are sought for on rolling surfaces of rail joints in hardened layer. When defined, aforesaid points are abraded, the rail is measured and marked using non-destructive test techniques. The rail head is heated to, at least, 400°C and worn rail joint surfaces are subjected to resurface welding to increase the size of repaired joint. Then, joint is cooled down and mechanically processed. The said resurface welding is performed over the entire width of rail head at reverse-polarity continuous current by applying deposited bead to overlap previously deposited bead along the repaired joint perimetre, starting crosswise from the rail nonworking part.
EFFECT: welding rectilinear and curvilinear track sections, high-quality welded seam.
1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD TO TRANSFORM OPERATED RAIL TRACK WITH JOINTS INTO JOITNTLESS RAIL TRACK | 2008 |
|
RU2378440C1 |
| METHOD OF RECLAIMING RAILWAY TRACK WORN-OUT ROLLING SURFACES WITHOUT REMOVING TRACK FROM ITS BED | 2009 |
|
RU2421309C1 |
| METHOD FOR ELIMINATION OF RAIL HEAD CRUSHING AND WEAR DEFECT IN WELD JOINT BY ELECTRIC ARC SURFACING | 2019 |
|
RU2708126C1 |
| REPAIR METHOD OF OPERATIONAL DAMAGES OF RAILROAD HEAD ROLLING SURFACE | 2018 |
|
RU2693252C1 |
| METHOD FOR REPAIR OF RAILWAY TRACK RAILS WITHOUT THEIR DISMANTLING OFF RAILWAY BED | 2008 |
|
RU2364674C1 |
| METHOD FOR RESTORING RAILS WITH DEFECTS ON THE ROLLING SURFACE OF AUTOMATIC ELECTRIC ARC WELDING | 2016 |
|
RU2654253C2 |
| RECOVERY METHOD OF WORN SURFACES | 2008 |
|
RU2382695C1 |
| METHOD OF THERMAL TREATMENT OF WELDED JOINTS OF RAILS | 2008 |
|
RU2371535C1 |
| RAIL BULL JOINT WELDING METHOD | 2005 |
|
RU2304495C2 |
| WORN SURFACE OF STEEL PARTS RESTORATION METHOD | 2005 |
|
RU2299115C1 |
