| 摘要 |
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 |
