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Title:
METHOD FOR THE HEAT TREATMENT OF STRUCTURE CASTINGS FROM AN ALUMINIUM ALLOY TO BE USED THEREFOR
Document Type and Number:
WIPO Patent Application WO2001023633
Kind Code:
A3
Abstract:
The invention relates to a method for the heat treatment of structure castings from an aluminium alloy. The inventive method comprises the steps: laying the structure casting onto a product receiving device that embraces the contours of said casting, heating up to 490 DEG C in approximately 30 minutes, maintaining the temperature of 490 DEG C for between 90 and 120 minutes, chilling in air from 490 DEG C to approximately 100 DEG C for approximately 4 minutes and optionally and subsequently chilling in water, heating up to 250 DEG C in approximately 15 minutes, maintaining the temperature of 250 DEG C for between 30 and 120 minutes, chilling in air to 40 DEG C and optionally and subsequently chilling in water. The invention also relates to a light-metal alloy for the use in said method. Said alloy has the following composition: Si: 2-11.5 %, Fe: 0.15-0.4 %, Mg: 0.3-5.5 %, Cu: <0.02 %, Mn: 0.4-0.8 %, Ti: 0.1-0.2 %, the rest being aluminium and trace elements, whereby the alloys having a high content of silicon are provided with low contents of magnesium and vice versa.

Inventors:
JERICHOW ULRICH (DE)
Application Number:
PCT/EP2000/008822
Publication Date:
November 01, 2001
Filing Date:
September 09, 2000
Export Citation:
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Assignee:
HONSEL GUSS GMBH (DE)
JERICHOW ULRICH (DE)
International Classes:
B22D29/00; C22C21/02; C22C21/06; C22C21/08; B22D1/00; C22F1/00; C22F1/04; C22F1/043; C22F1/047; (IPC1-7): C22F1/04; C22F1/043; C22C21/02; C22C21/08
Foreign References:
US4786340A1988-11-22
EP0796926A11997-09-24
Other References:
"HEAT TREATING OF ALUMINUM ALLOYS", 1991, ASM HANDBOOK, OHIO, US, XP002163162
W.HUFNAGEL: "ALUMINIUM-TASCHENBUCH", 1983, ALUMINIUM VERLAG, DÜSSELDORF, DE, XP002163163
SCHNEIDER W ET AL: "WAERMEBEHANDLUNG VON ALUMINIUM-GUSSLEGIERUNGEN FUER DAS VAKUUM- DRUCKGIESSEN TEIL 4: ERGEBNISSE VON AUSLAGERUNGSVERSUCHEN", GIESSEREI,DE,GIESSEREI VERLAG. DUSSELDORF, vol. 83, no. 19, 30 September 1996 (1996-09-30), pages 23 - 27, XP000627093, ISSN: 0016-9765
SCHENEIDER W ET AL: "WAERMEBEHANDLUNG VON ALUMINIUM-LUSSLEGIERUNGEN FUER DAS VAKUMM-DRUCKGIESSEN", GIESSEREI,DE,GIESSEREI VERLAG. DUSSELDORF, vol. 84, no. 4, 24 February 1997 (1997-02-24), pages 17 - 22, XP000688088, ISSN: 0016-9765
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