EP 2193858 A1 20100609 - Foundry core with improved gutting properties II
Title (en)
Foundry core with improved gutting properties II
Title (de)
Gießereikerne mit verbesserten Entkernungseigenschaften II
Title (fr)
Noyaux de fonderie dotés de propriétés de dénoyautage II améliorées
Publication
Application
Priority
DE 102008056842 A 20081112
Abstract (en)
The foundry core comprises sand such as quartz sand, aluminum oxide-based sand and/or mullite-based sand, organic binder or binder mixture, and hydrophobic aerogel granules such as oxidic aerogel granules, which have a grain size distribution in the order of magnitude of the sand. The sand and/or the aerogel granules have a grain size distribution of 0.1-0.9 mm. The aerogel granules have a grain size of = 0.5 mm. The portion of aerogel granules is 8-12 vol.%. The portion of aerogel granules in the core is 0.13-0.19 wt.%. An independent claim is included for a method for producing a foundry core.
Abstract (de)
Die vorliegende Erfindung betrifft Gießereikerne mit verbesserten Entkernungseigenschaften, ein Verfahren zu ihrer Herstellung sowie ihre Verwendung. Die Gießereikerne enthaltend Sand, Bindemittel und hydrophobes Aerogelgranulat.
IPC 8 full level
CPC (source: EP)
B22C 1/183 (2013.01); B22C 1/2253 (2013.01)
Citation (applicant)
- WO 9506617 A1 19950309 - BASF AG [DE], et al
- DE 102006003198 A1 20070726 - DEUTSCH ZENTR LUFT & RAUMFAHRT [DE]
- K. E. HÖNER: "Ullmanns Encyklopädie der technischen Chemie", vol. 12, 1976, VERLAG CHEMIE, article "Gießereiwesen", pages: 271 - 287
Citation (search report)
- [I] WO 9506617 A1 19950309 - BASF AG [DE], et al
- [AD] DE 102006003198 A1 20070726 - DEUTSCH ZENTR LUFT & RAUMFAHRT [DE]
- [A] WO 2005056643 A2 20050623 - DEUTSCH ZENTR LUFT & RAUMFAHRT [DE], et al
- [A] DE 102006056093 A1 20080521 - DEUTSCH ZENTR LUFT & RAUMFAHRT [DE], et al
- [A] EP 1852197 A1 20071107 - DEUTSCH ZENTR LUFT & RAUMFAHRT [DE]
- [A] EP 0340707 A2 19891108 - BASF AG [DE]
- [A] US 2002173554 A1 20021121 - BAUMANN THEODORE F [US], et al
- [A] LORENZ RATKE ET AL: "Mechanical properties of aerogel composites for casting purposes", JOURNAL OF MATERIALS SCIENCE, KLUWER ACADEMIC PUBLISHERS, BO, vol. 41, no. 4, 1 February 2006 (2006-02-01), pages 1019 - 1024, XP019211565, ISSN: 1573-4803
- [A] BRÜCK S ET AL: "RF-Aerogels: A New Binding Material for Foundry Application", JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, SPRINGER, NEW YORK, NY, US, vol. 26, 1 January 2003 (2003-01-01), pages 663 - 666, XP002442103, ISSN: 0928-0707
Designated contracting state (EPC)
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 SE SI SK SM TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2193858 A1 20100609; EP 2193858 B1 20160113; DE 102008056842 A1 20100520
DOCDB simple family (application)
EP 09175205 A 20091106; DE 102008056842 A 20081112