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2 226 143

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Application

2002114377/02, 2002-05-31

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Start date

2002-05-31

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Actual filing date

2002-05-31

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Published

2004-03-27

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Inventor

Rukosuev A.P.Demchenko A.I.Kholodov D.A.Novosel'Tsev Ju.G.Kireev A.A.

(73)

Holder

Krasnojarskij Gosudarstvennyj Tekhnicheskij Universitet

METHOD FOR SINGLE-SIDE CONTACT SPOT WELDING Russian patent published in 2004 - IPC

Abstract RU 2226143 C2

FIELD: machine engineering. SUBSTANCE: method comprises steps of welding with use of two electric current pulses and variable compression effort; heating, mainly upper part while increasing its electric resistance by means of first electric current pulse at lowering compression effort of electrodes relative to its nominal value by 40-80%; by means of second welding electric current pulse providing welding spot of predetermined size at nominal compression effort. Value of shunting electric current flowing along upper part is lowered due to heating upper part. EFFECT: enhanced quality of welded joint due to lowered value of by-pass electric current and improved fusion of lower part. 2 dwg

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RU 2 226 143 C2

Authors

Rukosuev A.P.

Demchenko A.I.

Kholodov D.A.

Novosel'Tsev Ju.G.

Kireev A.A.

Dates

2004-03-27—Published

2002-05-31—Filed

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