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2 158 668

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IPC

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Application

99102179/02, 1999-02-04

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Start date

1999-02-04

(22)

Actual filing date

1999-02-04

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Published

2000-11-10

(72)

Inventor

Semenov V.N.Grigor'Ev A.I.Derkach G.G.Movchan Ju.V.Loginov A.L.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Npo Ehnergomash Im. Akad. V.P. Glushko

WELDED JOINT FORMING METHOD Russian patent published in 2000 - IPC

Abstract RU 2158668 C2

FIELD: mechanical engineering; rocket building welding. SUBSTANCE: invention relates to welding of maraging steels. V-preparation is carried out with provision of contraction groove in weld root. Butt joint is formed is formed by tacking with direct working current using chromium-plated surface filler wire. Welding is done by multiple-pass method in shielding gases such as argon or carbon dioxide. First pass is carried out with direct working current tungsten electrode and filler wire with chromium plated surface. Second and all subsequent passes, with reverse working current unit fusible electrode made of chromium plated surface wire. EFFECT: provision of welded joint without cracks, both in weld and adjacent zone. 3 cl, 1 dwg

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RU 2 158 668 C2

Authors

Semenov V.N.

Grigor'Ev A.I.

Derkach G.G.

Movchan Ju.V.

Loginov A.L.

Dates

2000-11-10—Published

1999-02-04—Filed

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