Molding material testing device
A molding material testing device is a laboratory device used in foundry technology . Molding material testing devices test the mechanical-technological properties of the foundry molding materials, such as the compressive / flexural strength of a defined molding material geometry (bending bar), the gas permeability or are used to investigate the rolling behavior of molding materials . The latter gives information about the hardening behavior and the hardening during the mask construction in the mask molding process. As part of the quality control of the molding department in the foundries, these devices are housed in a molding material laboratory and are used for regular control of the molding material parameters of the respective molding process.
The mask shape testing device consists of a rotatably arranged, round heating plate above which there is a funnel for receiving the molding material to be tested and precisely weighed beforehand. A collecting tray is arranged under the heating plate, which collects the molding material that falls off during the turning process.
A control unit is attached to the test device itself, where the electrical displays and the temperature control are located. The test temperature is set using a corresponding temperature controller and the heating status is indicated by a control lamp .
Individual evidence
- ^ Foundry practice ( Memento from July 11, 2012 in the web archive archive.today ).
swell
- Ernst Brunhuber (founder), Stephan Hasse (ed.): Giesserei Lexikon. Fachverlag Schiele & Schön, Berlin 2000, ISBN 3-7949-0655-1 .
literature
- Karl Stölzel: Foundry for thousands of years. German publishing house for basic industry, Leipzig 1978.
- Günter Spur , Theodor Stöferle (Ed.): Handbook of manufacturing technology. Volume 1: Archetypes. Carl Hanser Verlag, Munich et al. 1981, ISBN 3-446-12532-9 .
- Alfred Herbert Fritz, Günter Schulze (ed.): Manufacturing technology. 7th revised edition. Springer, Berlin et al. 2006, ISBN 3-540-25623-7 .