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2 423 211

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IPC

B23K20/02(2006-01-01)

B23K101/26(2006-01-01)

(21) (22)

Application

2009144649/02, 2009-12-01

(24)

Start date

2009-12-01

(22)

Actual filing date

2009-12-01

(45)

Published

2011-07-10

(72)

Inventor

Bondarenko Aleksej AlekseevichMaerov Georgij RomanovichKolesnikov Evgenij Igor'EvichAtapin Vitalij VladimirovichFedorova Oksana Anatol'EvnaMaljanov Denis VladimirovichGil'Mutdinova Elena Alikovna

(73)

Holder

Gosudarstvennoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Gosudarstvennyj Universitet Putej Soobshchenija"

METHOD OF RAILS WELDING WITH PRESSURE AND HEATING Russian patent published in 2011 - IPC B23K20/02 B23K101/26

Abstract RU 2423211 C1

FIELD: process engineering.

SUBSTANCE: invention may be used in butt welding of railway and tram rails. Butts are machined and subjected to nitrogen hardening to depth of 0.05 to 0.1 mm. Rails butted, pressing force is applied to butt joint to heat to (Ac₃+300)°C÷(Ac₃+400)°C and hold it thereat for butt joint austenitisation. After upsetting, butt joint is cooled by air-water mix to "Мн"°C÷("Мн"+400)°C and, then, by air to ambient temperature.

EFFECT: higher hardness and strength thanks to fine-grained structure, and impact number of metal.

1 tbl, 1 ex

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RU 2 423 211 C1

Authors

Bondarenko Aleksej Alekseevich

Maerov Georgij Romanovich

Kolesnikov Evgenij Igor'Evich

Atapin Vitalij Vladimirovich

Fedorova Oksana Anatol'Evna

Maljanov Denis Vladimirovich

Gil'Mutdinova Elena Alikovna

Dates

2011-07-10—Published

2009-12-01—Filed