METHOD FOR CONTACT-BUTT WELDING OF TUBE WITH PLUG Russian patent published in 2006 - IPC B23K11/04 B23K101/04 G21C21/02

Abstract RU 2268811 C2

FIELD: machine engineering, namely processes for sealing tubular articles by means of contact-butt welding, for example fuel element in the form of tube with plug in nuclear reactors.

SUBSTANCE: method comprises steps of fixing tube end portion in attachment having recess; freely placing part of plug in electrode with possibility of its radial motion at welding process; compressing tube and plug whose maximum diameter is less than outer diameter of tube but more than tube inner diameter; heating parts by passing electric current; pressing-in plug inside tube for providing desired alignment of tube and plug.

EFFECT: stable quality of welded seam and the whole joint, simplified tuning of equipment.

1 dwg

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RU 2 268 811 C2

Authors

Kislitskij Aleksandr Antonovich

Dates

2006-01-27—Published

2002-08-08—Filed