EP 2744612 B1 20151021 - METHOD FOR PRODUCING INVESTMENT CASTINGS
Title (en)
METHOD FOR PRODUCING INVESTMENT CASTINGS
Title (de)
VERFAHREN ZUR FEINGUSSHERSTELLUNG
Title (fr)
PROCÉDÉ DE PRODUCTION DE MOULAGES À MOULES PERDUS
Publication
Application
Priority
- PL 39603011 A 20110819
- PL 2012000068 W 20120810
Abstract (en)
[origin: WO2013028086A2] A method for producing investment castings, preferably in ceramic moulds, from alloys based on Al, Mg, Cu, Zn and Fe, characterised in that the ceramic mould is baked at temperatures of 800-1000°C for 2-4 hours, then the mould is cooled to a temperature of 20-950°C and is held at this temperature for 10-40 minutes, then it is poured with liquid alloy overheated by from 50 to 200°C above the initial melting point and after a lapse of 10-100 seconds, the mould is immersed at a fixed or variable speed in a liquid cooling medium, which is a 1 -99 volume percent aqueous solution of liquid polymer at a temperature of 15-85°C. Preferably, the liquid polymer is a polymer of the PAG or PVP, or ACR, or PEO type. Preferably, the ceramic moulds made of aluminosilicate, or high alumina refractory materials, especially based on synthetic sand, for example Molochite, are used.
IPC 8 full level
B22D 27/04 (2006.01)
CPC (source: EP US)
B22D 27/04 (2013.01 - US); B22D 27/045 (2013.01 - EP US); B22D 30/00 (2013.01 - EP US)
Citation (examination)
SCOTT MACKENZIE D: "Advances in Quenching - A Discussion of Present and Future Technologies", HEAT TREATING AND SURFACE ENGINEERING. PROCEEDINGS OF THE 22ND HEAT TREATING SOCIETY CONFERENCE AND THE 2ND INTERNATIONAL SURFACE ENGINEERING CONGRESS, 15-17 SEPTEMBER 2003, INDIANA CONVENTION CENTER, INDIANAPOLIS, INDIANA, USA, ASM INTERNATIONAL, US, 15 September 2003 (2003-09-15), pages 228 - 239, XP009184673, ISBN: 0-87170-797-7
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2013028086 A2 20130228; WO 2013028086 A3 20130418; WO 2013028086 A4 20130613; EP 2744612 A2 20140625; EP 2744612 B1 20151021; JP 2014525839 A 20141002; PL 216825 B1 20140530; PL 396030 A1 20130304; RU 2014104995 A 20150927; RU 2579841 C2 20160410; UA 109823 C2 20151012; US 2014190653 A1 20140710
DOCDB simple family (application)
PL 2012000068 W 20120810; EP 12772821 A 20120810; JP 2014525961 A 20120810; PL 39603011 A 20110819; RU 2014104995 A 20120810; UA A201401353 A 20120810; US 201214237360 A 20120810