Title:
METHOD AND DEVICE FOR PRODUCING DIMENSIONALLY ACCURATE FOAM
Document Type and Number:
WIPO Patent Application WO2004085688
Kind Code:
A3
Abstract:
The invention relates to a method for producing dimensionally accurate metal foam from a foamable, powder metallurgically produced metal semifinished product having a melting point > 200 °C involving: the introduction of material, which is capable of foaming when T > 200 °C, into a mold, which is thermally stable up to the melting point of the foamable material and which has a coefficient of expansion of less than 3 K<-1>, preferably < 1 K<-1>; the controlled heating of the foamable material inside the mold while radiators foam said material, whereby these radiators are controlled with regard to energy output and are used on or through the mold, and; the removal of the foam formed thereby from the mold. The invention also relates to a device for producing dimensionally accurate thermally foamed metal foam parts that comprises: a thin-walled mold, which is stable at the melting temperature of the metal foam and which has a coefficient of expansion of < 3 K<-1>; a controllable irradiating device, and; a controller that controls the irradiating device based on the measurement given by a radiation measuring device.
Inventors:
RAJNER WALTER (DE)
SIMANCIK FRANTISEK (SK)
SIMANCIK FRANTISEK (SK)
Application Number:
PCT/EP2004/003183
Publication Date:
December 29, 2004
Filing Date:
March 25, 2004
Export Citation:
Assignee:
ALULIGHT INTERNAT GMBH (AT)
RAJNER WALTER (DE)
SIMANCIK FRANTISEK (SK)
RAJNER WALTER (DE)
SIMANCIK FRANTISEK (SK)
International Classes:
B22F3/11; B22F3/12; (IPC1-7): B22F3/11
Foreign References:
| DE19954755A1 | 2001-05-17 | |||
| US20020127425A1 | 2002-09-12 | |||
| US5255729A | 1993-10-26 |
Other References:
SIMANCIK F ET AL: "EFFECT OF FOAMING PARAMETERS ON THE PORE SIZE", METAL FOAMS AND POROUS METAL STRUCTURES, XX, XX, 1999, pages 105 - 108, XP009034573
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