WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO1994026438) METHOD AND MANUFACTURING OF MOULDING SAND, SUCH MOULDING SAND AND APPLICATION THEREOF
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1994/026438    International Application No.:    PCT/DK1993/000163
Publication Date: 24.11.1994 International Filing Date: 14.05.1993
Chapter 2 Demand Filed:    14.06.1994    
IPC:
B22C 1/00 (2006.01)
Applicants: P.V. SAND A/S, FREDERICIA [DK/DK]; Aagade 103, Pjedsted, DK-7000 Fredericia (DK) (For All Designated States Except US).
JØRGENSEN, Palle, Norup [DK/DK]; (DK) (For US Only)
Inventors: JØRGENSEN, Palle, Norup; (DK)
Agent: LEHMANN & REE A/S; Grundtvigsvej 37, DK-1864 Frederiksberg C (DK)
Priority Data:
Title (EN) METHOD AND MANUFACTURING OF MOULDING SAND, SUCH MOULDING SAND AND APPLICATION THEREOF
(FR) SABLE DE FONDERIE, SON PROCEDE DE PRODUCTION ET SES APPLICATIONS
Abstract: front page image
(EN)A moudling sand, produced from free and mainly pure quartz sand particles, mixed with free and mainly pure feldspar particles in the amount of 5 to 20 percent by weight, is well suited for use in the production of iron castings in which blatribs must be avoided. The amount of free feldspar particles creates a buffer which allows the quartz sand particles to perform an expansion without any risk of formations of cracks in the sand. Furthermore, the produced moulding sand will have a good binding so that there is no risk that edges are broken off from cores or moulds at ingates.
(FR)Sable de fonderie obtenu à partir de particules libres de quartz pratiquement pur mélangées à des particules libres et pratiquement pures de feldspath à raison de 5 à 20 % en poids, et convenant à la production de pièces en fonte ne devant pas comporter de nervures. La quantité de particules libres de feldspath créent un tampon qui permet la dilatation des particules de quartz sans aucun risque de formation de craquelures dans le sable. De plus, le sable ainsi produit présente une bonne capacité d'agglomération, ce qui supprime les risques de rupture des bords des moules ou des noyaux lors de l'attaque de coulée.
Designated States: AT, AU, BB, BG, BR, CA, CH, CZ, DE, DK, ES, FI, GB, HU, JP, KP, KR, LK, LU, MG, MN, MW, NL, NO, NZ, PL, PT, RO, RU, SD, SE, SK, UA, US.
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: Danish (DA)