MANIFOLD AND MANUFACTURE THEREOF

Title:

MANIFOLD AND MANUFACTURE THEREOF

Document Type and Number:

Japanese Patent JPH04370492

Kind Code:

A

Abstract:

PURPOSE: To provide a manifold which is used for a heat-exchanger having a multibranch coupling part formed by integral forging molding.

CONSTITUTION: After a core 30 is inserted in a work having a premolded body pipe part, the work is brought into contact with a bottom mold 21. A top mold 25 having a branch pipe molding hole 28 and a punch rod 29 is set to effect pressurization. A part of the work flows in a solid state to the interior of the molding hole 28. Thereafter, by effecting pressurization by using a punch rod 29, a branch pipe 3 can be molded. Then the top mold is removed, a core is taken out and, by intercommunicating a branch pipe hole 5 and a body pipe 4 by using a punch or a drill, a manifold having a number of branch pipe couplings can be integrally forge-molded.

Inventors:

KATAOKA HIROMI

Application Number:

JP24530291A

Publication Date:

December 22, 1992

Filing Date:

June 19, 1991

Export Citation:

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Assignee:

KATAOKA HIROMI

International Classes:

B21C23/20; B21C37/29; B21J5/06; B21J5/10; B21K1/16; B21K21/16; F16L41/03; F28F9/02; (IPC1-7): B21C23/20; B21C37/29; B21J5/06; B21J5/10; B21K1/16; B21K21/16; F16L41/03; F28F9/02

Attorney, Agent or Firm:

Takahiko Higashiyama

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