FIELD: pressure welding, for example in rail welding plants.
SUBSTANCE: method comprises steps of mechanically working ends of joined parts, abutting them and heating butt till welding temperature, namely heating butt till temperature (Ac3 +300)°C - (Ac3+ 400)°C; soaking it at such temperature for providing austenization of butt zone; after upsetting, cooling butt by means of air-water mixture till temperature Мн°C - (Мн + 400)°С then air cooling of it till temperature of environment. Such welded joints of parts have no fins and they feature mechanical properties similar to those of base metal.
EFFECT: enhanced reliability and safety of railway roads with welded joints according to invention, increased useful life period of welded rails.
1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| RAILS PRESSURE WELDING WITH HEATING | 2010 |
|
RU2425738C1 |
| METHOD OF RAILS WELDING WITH PRESSURE AND HEATING | 2009 |
|
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| METHOD OF HEAT TREATMENT OF RAIL WELD JOINTS | 2012 |
|
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| METHOD OF CONTACT BUTT WELDING OF RAILS | 2020 |
|
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| METHOD FOR PRESSURE WELDING OF RAILS AT HEATING THEM | 2005 |
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| METHOD OF ALUMINOTHERMIC WELDING OF RAILS | 2009 |
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| METHOD OF ALUMINOTHERMIC WELDING OF RAILS | 2009 |
|
RU2423213C1 |
| METHOD FOR PRESSURE WELDING WITH HEATING OF PIPES FROM ALLOYED STEELS | 2006 |
|
RU2352442C2 |
| METHOD OF ALUMINOTHERMAL WELDING OF RAILS | 2007 |
|
RU2349433C2 |
