Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Verfahren zur Herstellung komplex geformter Gussteile mit eine Druckgießmaschine

Preparing complex formed cast parts using a pressure casting machine, in which lost cast parts are used during casting process, comprises forming lost cast parts from a ceramic body, where the cast parts are prepared using a lost model
 
: Heuser, Michael; Haesche, Marco; Wöstmann, F.-J.; Eilers, J.

:
Frontpage ()

DE 102012006572 A1: 20120330
German
Patent, Electronic Publication
Fraunhofer IFAM ()

Abstract
The method of preparing complex formed cast parts using a pressure casting machine, in which lost cast parts (3) are used during casting process and define a region of the complex formed cast parts, comprises forming the lost cast parts from a ceramic body, where the cast parts are prepared using a lost model. The casting process is performed with the pressure casting machine having a pressure of less than 10 MPa and a casting piston speed of less than 1 m/s. The lost cast parts for the casting process are inserted into a casting chamber of the pressure casting machine. The method of preparing complex formed cast parts using a pressure casting machine, in which lost cast parts (3) are used during casting process and define a region of the complex formed cast parts, comprises forming the lost cast parts from a ceramic body, where the cast parts are prepared using a lost model. The casting process is performed with the pressure casting machine having a pressure of less than 10 MPa and a casting piston speed of less than 1 m/s. The lost cast parts for the casting process are inserted into a casting chamber of the pressure casting machine or a cavity of permanent cast parts (5) used in the pressure casting machine, where cast parts are dimensions in such a way that it completely fill the casting chamber or the cavity of the permanent cast part. A surface of the ceramic body is impregnated, sealed or coated to prevent a penetration or an infiltration of the liquid casting material (6) during the casting process. The ceramic body is prepared from a material composition changing to the surface of the body, where the material composition is selected in a portion of the surface of the ceramic body. The lost model is prepared with a rapid prototyping method, and is made of a wax or a plastic. The casting chamber of the pressure casting machine is provided with a temperature-fixed coating, and is formed from a ceramic material or equipped with a changeable wear insert to enable processing of higher melting metals in the casting process.

: http://publica.fraunhofer.de/documents/N-270917.html