FIELD: processes for restoring or strengthening worn surfaces of steel parts by means of electric arc surfacing, mainly parts of passenger and cargo cars of railway road rolling stock.
SUBSTANCE: method comprises steps of electric arc surfacing of worn surface, mechanically working it, heating and gas-flame depositing wear-resistant layer onto it for further flashing coating surface. Electric arc surfacing is realized while taking into account allowance for further mechanical working performed at lowering nominal size of part. Then worked surface is subjected to activation by means of shot blasting. Gas-flame deposition is realized with use of self-fluxing powdered alloy for further flashing of applied coating by heating part till temperature 950 - 1050°C. Coating is applied for increasing nominal size of part by shrinkage value of coating after finally cooling part.
EFFECT: improved quality of restored surfaces of parts, increased fatigue strength of steel parts.
1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF RECLAIMING RAILWAY TRACK WORN-OUT ROLLING SURFACES WITHOUT REMOVING TRACK FROM ITS BED | 2009 |
|
RU2421309C1 |
| RESTORATION METHOD OF WORN-OUT SURFACES OF STEEL PARTS | 2013 |
|
RU2532738C1 |
| METHOD TO RECOVER STEEL CRANKSHAFT JOURNALS | 2008 |
|
RU2385211C2 |
| METHOD OF WELDING RAILROAD RAILS | 2007 |
|
RU2356712C1 |
| METHOD FOR ELIMINATION OF RAIL HEAD CRUSHING AND WEAR DEFECT IN WELD JOINT BY ELECTRIC ARC SURFACING | 2019 |
|
RU2708126C1 |
| METHOD OF APPLICATION OF METALLIC POWDER COATING TO THE SURFACE OF METAL CONSTRUCTIONS | 2016 |
|
RU2645421C1 |
| METHOD FOR FACING BY SELF-FLUXING POWDERS | 1992 |
|
RU2042738C1 |
| METHOD FOR REPAIR OF RAILWAY TRACK RAILS WITHOUT THEIR DISMANTLING OFF RAILWAY BED | 2008 |
|
RU2364674C1 |
| METHOD FOR RESTORING OF NECKS OF STEEL CRANKSHAFTS | 2017 |
|
RU2652609C1 |
| METHOD TO RECONDITION STEAM TURBINE VANES FROM ALLOYED STEELS | 2009 |
|
RU2426631C1 |
