METHOD FOR MAKING HOLLOW PROFILED ARTICLES (VARIANTS) AND APPARATUS FOR PERFORMING THE SAME (VARIANTS) Russian patent published in 2004 - IPC

Abstract RU 2226439 C2

FIELD: manufacture by extrusion process of elongated hollow metallic articles, mainly tubes widely used in building industry branches, aircraft making, chemical machine engineering, municipal engineering and so on. SUBSTANCE: method comprises steps of extruding metallic blank from container through die having splitter; at extruding process applying coating onto inner surface of hollow profiled articles; supplying coating material through one or several ducts passing through splitter. EFFECT: enhanced functional possibilities of universal press equipment allowing simultaneously with extrusion to apply onto inner surface of profiled articles high-quality different-designation coatings. 4 cl, 2 dwg

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RU 2 226 439 C2

Authors

Kavtaev E.E.

Litvinov A.N.

Timofeev A.V.

Mikhajlov E.D.

Glazenkov S.Eh.

Uglov A.V.

Smirnov G.V.

Dates

2004-04-10Published

2002-03-19Filed