FORMING TECHNIQUE USING DISCRETE HEATING ZONES

Title:

FORMING TECHNIQUE USING DISCRETE HEATING ZONES

Document Type and Number:

WIPO Patent Application WO1998043759

Kind Code:

A9

Abstract:

A forming device including discrete heating zones (18a-18d) along the axial length and circumferential portion of a mold cavity (23). One zone can be heated to cause the heated tube portion to become more elastic than the non-heated tube portions. As a result, less axial force and radial pressures are required in order to provide the necessary metal deformation against the mold halves (12, 14). Preferably, the heating zones (18a-18d) are provided by way of a series of induction coils (16a-16d) disposed along the axial length and circumferential portion of the tube (26). Each induction coil (16a-16d) can be individually energized so that select portions of the tube (26) are heated in a controlled manner.

More Like This:

JP2001286944	FORMING METHOD AND MACHINE FOR TUBE HYDROFORMING
WO/2013/012097	FORMING SYSTEM FOR WORKING MATERIAL, AND, FORMING METHOD FOR WORKING MATERIAL

Inventors:

FREEMAN RICHARD B
HANDLEY MARK C

Application Number:

PCT/US1998/006105

Publication Date:

April 22, 1999

Filing Date:

March 27, 1998

Export Citation:

Click for automatic bibliography generation Help

Assignee:

BUDD CO (US)

International Classes:

B21D26/033; B21D37/16; B21D41/02; (IPC1-7): B21D39/20; B21D41/04

Download PDF:

View/Download PDF PDF Help

Previous Patent: METHOD AND APPARATUS FOR FORMING OF TUBING

Next Patent: PRESSURIZED SQUEEZE CASTING APPARATUS AND METHOD