INTERNAL TREATMENT DEVICE FOR CAST IRON PIPE

Japanese Patent JP2002200524

A

To reduce a burden on a subsequent treatment process by eliminating generation of grinding abrasive grain dust in treatment of grinding away scales on the surface of a cast iron pipe after casting.

The tip of a main support shaft 1 cantilevered for insertion in the cast iron pipe 10 after casting supports rotary boards 3 rotatable on the axis of the main support shaft 1. The rotary boards 3 journals, on a plurality of sub support shafts 4 parallel to the main support shaft 1, respective loosely rotatable ringed cutter blades 5 of super-hard steel with a center hole 5b punched in a larger relation to the diameter of the sub support shafts 4. The rotary boards 3 supporting the plurality of ringed cutter blades 5 is connected to a rotating drive 15 drivable in such a rotational frequency as allows the ringed cutters projected under centrifugal force to chip the internal surface of the cast iron pipe. The support shaft 1 can axially reciprocate over a distance conforming to the pipe length of the cast iron pipe 10.

JPH064189	Equipment into which a structure is processed by the temperature shock and pressure shock by lighting inflammable mixed gas, especially heat barricade picking equipment
WO/1986/004531	INSTALLATION FOR THE TREATMENT OF PARTS BY MEANS OF AN EXPLOSIVE GAS MIXTURE, PARTICULARLY THERMAL DEBURRING MACHINE
JP2002086314	SUPPLY PIPE FOR SURFACE FINISHING OF PART

NISHIBORI HIKARI
KAKIUCHI TSUTOMU
OTAKI HIROSHI
TANI FUMIHIKO

JP2000399680A

July 16, 2002

December 28, 2000

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KUBOTA KK
TANI KIKAN KOGYO KK

B23D79/00; (IPC1-7): B23D79/00

Yoshihiro Morimoto

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