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2 425 738

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IPC

B23K20/00(2006-01-01)

C21D7/06(2006-01-01)

C21D9/50(2006-01-01)

(21) (22)

Application

2010108311/02, 2010-03-05

(24)

Start date

2010-03-05

(22)

Actual filing date

2010-03-05

(45)

Published

2011-08-10

(72)

Inventor

Bondarenko Aleksej AlekseevichMaerov Georgij RomanovichAtapin Vitalij VladimirovichKolesnikov Evgenij Igor'Evich

(73)

Holder

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

RAILS PRESSURE WELDING WITH HEATING Russian patent published in 2011 - IPC B23K20/00 C21D7/06 C21D9/50

Abstract RU 2425738 C1

FIELD: metallurgy.

SUBSTANCE: connected details of steel are assembled butt-to-butt and there is applied compression force. Butt is heated to temperature (Ac₃+300)°C÷(Ac₃+400)°C and conditioned at this temperature for austenisation of butt zone. Upon upset the butt is cooled with air-water mixture to temperature Mn°C÷(Mn+400)°C and is strengthened with shot. Further, the but is cooled to temperature of environment. As working substance at strengthening there are used steel balls of 0.6…0.8 diameter at air pressure 0.7…0.8 MPa.

EFFECT: raised hardness in zone of welding seam relative to base material of rail.

4 tbl, 1 ex

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RU 2 425 738 C1

Authors

Bondarenko Aleksej Alekseevich

Maerov Georgij Romanovich

Atapin Vitalij Vladimirovich

Kolesnikov Evgenij Igor'Evich

Dates

2011-08-10—Published

2010-03-05—Filed