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2 156 184

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IPC

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Application

98109065/02, 1998-05-14

(24)

Start date

1998-05-14

(22)

Actual filing date

1998-05-14

(45)

Published

2000-09-20

(72)

Inventor

Adzhjan A.P.Pirogov N.A.Grigorkin N.M.Bedov Ju.A.Tumanov L.A.Semenov V.N.Movchan Ju.V.

(73)

Holder

Nauchno-Proizvodstvennoe Ob"Edinenie Ehnergeticheskogo Mashinostroenija Im. Akad. V.P. Glushko

METHOD OF AND DEVICE FOR MAKING LONG-CUT ARTICLES Russian patent published in 2000 - IPC

Abstract RU 2156184 C2

FIELD: mechanical engineering; welded structures. SUBSTANCE: invention relates to production of long-cut articles such as pipes, bushings, vessels, from blanks. First blanks equal in length and width are cut from sheet material pack. After welding of shells they are subjected to facing at both ends. Then shells are butt-joined by means of centering tool in form of sector expander with channel to supply shielding gas to root of welded edge seam. Centering tool is installed on guide in form of rod of equal diameter over entire length with surface roughness not below Rz 20. This provides high accuracy in axial alignment and straightness of long-cut articles. Insert with stepped thrust and centering surfaces is secured on end face part of rod. Shell are butt joined and welded by girth seams in shielding gas being arranged on rod one after the other. EFFECT: improved quality of welded long-cut articles. 3 cl, 2 dwg

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RU 2 156 184 C2

Authors

Adzhjan A.P.

Pirogov N.A.

Grigorkin N.M.

Bedov Ju.A.

Tumanov L.A.

Semenov V.N.

Movchan Ju.V.

Dates

2000-09-20—Published

1998-05-14—Filed

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