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1. (WO1998050186) METHOD FOR PRODUCING POROUS CAST PARTS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/050186 International Application No.: PCT/DE1998/000929
Publication Date: 12.11.1998 International Filing Date: 02.04.1998
IPC:
B22D 19/14 (2006.01) ,B29C 33/52 (2006.01) ,B29C 33/54 (2006.01) ,B29C 39/22 (2006.01) ,B29C 71/00 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
22
CASTING; POWDER METALLURGY
D
CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
19
Casting in, on, or around, objects which form part of the product
14
the objects being filamentary or particulate in form
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
33
Moulds or cores; Details thereof or accessories therefor
44
with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
52
soluble or fusible
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
33
Moulds or cores; Details thereof or accessories therefor
44
with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
54
made of powdered or granular material
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
39
Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
22
Component parts, details or accessories; Auxiliary operations
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
71
After-treatment of articles without altering their shape; Apparatus therefor
Applicants:
ROBERT BOSCH GMBH [DE/DE]; Postfach 30 02 20 D-70442 Stuttgart, DE (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, JP, KR, LU, MC, NL, PT, SE)
BIENZLE, Marcus [DE/DE]; DE (UsOnly)
Inventors:
BIENZLE, Marcus; DE
Priority Data:
197 18 886.903.05.1997DE
Title (DE) VERFAHREN ZUR HERSTELLUNG VON PORÖSEN FORMKÖRPERN
(EN) METHOD FOR PRODUCING POROUS CAST PARTS
(FR) PROCEDE DE FABRICATION DE PIECES MOULEES POREUSES
Abstract:
(DE) Die Erfindung betrifft ein Verfahren zur Herstellung von porösen Formkörpern. Hierbei lassen sich komplexe Porenverläufe und Porengeometrien dann auf einfache Weise wirtschaftlich verwirklichen, wenn vorgesehen ist, daß Füllkörper aneinanderliegend in eine Form eingelegt werden, daß die zwischen den Füllkörpern gebildeten Hohlräume mit einem flüssigen Material ausgegossen werden, daß nach dem Vergießen das Material in einen festen Aggregatzustand überführt wird, und daß nach der Verfestigung die Füllkörper vom festen in den flüssigen oder gasförmigen Aggregatzustand überführt und aus dem Formkörper ausgeleitet werden.
(EN) Disclosed is a method for producing porous cast parts, whereby complex structures and geometric designs of pores are realized at a low cost. Said method involves arranging filling bodies side-by-side in a mould, filling the cavities formed between the filling bodies with a liquid substance which is then processed to a solid aggregate and, after solidification, processing said filling bodies from a solid state to a liquid or gaseous state, thus enabling the cast part to be removed therefrom.
(FR) La présente invention concerne un procédé de fabrication de pièces moulées poreuses, consistant à réaliser de façon simple et pour un coût avantageux des structures et géométries complexes de pores, à placer des corps de remplissage en juxtaposition dans un moule, à remplir les cavités formées entre les corps de remplissage en y versant une matière liquide que l'on fait ensuite passer à l'état d'aggrégat solide; après solidification, on fait passer les corps de remplissage de l'état solide à l'état liquide ou gazeux, pour ensuite en extraire la pièce moulée.
front page image
Designated States: JP, KR, US
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: German (DE)
Filing Language: German (DE)