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Patent Searching and Data


Title:
METHOD FOR DRAWING PIPE AND POLISHING OF INTERNAL SURFACE OF PIPE
Document Type and Number:
Japanese Patent JPS6363523
Kind Code:
A
Abstract:

PURPOSE: To enable polishing an inner surface of a tubular body to a specular surface and to enable drawing into a pipe of prescribed diameter possessed of a fine inner surface even for a small-sized pipe by drawing a tubular body of metal or plastic material, etc., through a die in the state of packing a ceramic powder material in its inner part.

CONSTITUTION: A small-sized top fitting part 11 of the tubular body 1 made of the metal, plastic, etc., is sealed and the ceramic powder 2 material is packed. This top fitting part 11 is passed through the die 3 buried with a heating element 4 and gripped by a catcher 5, then the drawing work is performed. And then, the plastic working of the tubular body 1 is facilitated by heating and the inner surface of the pipe is polished by the incorporated ceramic powder material 2 to make the inner surface specular. Therefore, even for the small- sized pipe, the drawing work is performed to obtain the small-sized pipe of prescribed diameter possessed of a fine inner surface at low cost.


Inventors:
Hajikano, Kiyoshi
Application Number:
JP1986000206917
Publication Date:
March 19, 1988
Filing Date:
September 04, 1986
Export Citation:
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Assignee:
HAJIKANO KIYOSHI
International Classes:
B21C1/22; (IPC1-7): B21C1/22