This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Testing for Thermal Distortion in Chemically-Bonded Foundry Sands
Technical Paper
2001-01-1038
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2001 World Congress
Language:
English
Abstract
The automotive/metalcasting industry has realized the need for near-net shape casting. Powertrain components are designed to assuage in close tolerance. A goal of the foundry engineer is to produce cores and molds of consistent dimensional accuracy, and hence a casting satisfying the ever tighter tolerances of the automotive industry. The developers and users of chemical binders, in hot or cold box cores or on patterns for mold, all have this issue in mind.
A thermal distortion tester, developed at Western Michigan University for examining the thermomechanical properties of chemically-bonded sands, is described. It is simple to operate and the test piece is a “disc transverse strength specimen” used with chemically-bonded sands.
The tester can be used for process control to establish a materials control program and for dimensional control of cores and molds. The tester is another tool that would aid in identifying correct amounts of binder materials and catalysts, and for predicting the behavior of the core and mold material in thermo-mechanical application. The thermal distortion curves of sand/binder systems are discussed.
Authors
Citation
Ramrattan, S., "Testing for Thermal Distortion in Chemically-Bonded Foundry Sands," SAE Technical Paper 2001-01-1038, 2001, https://doi.org/10.4271/2001-01-1038.Also In
References
- Guichelaar P.J. Ramrattan S.N. Tieder R.E. “Alternative Granular Media for the Metal Casting Industry,” September 30 1994 Work Performed Under Contract No. FC07-93ID13231, For Metal Casting Competitiveness Research Program Department of Energy, Idaho Field Office Idaho Falls, Idaho
- Fountaine G.C. Horton K.B. “Comparison of Core Distortion Using Various Binder Systems,” AFS Transactions 1993 101 721
- Morgan A.D. Fasham E.W. “The BCIRA Hot Distortion Tester for Quality Control in Production of Chemically Bonded Sands,” AFS Transactions 1975 91 73 80
- Company Brochure “Dietert Model 490-A Sand Strength Machine,” George Fischer Disa Inc. Holly, MI 1999
- AFS Mold and Core Test Handbook 2nd 313 314 The American Foundrymen's Society, Inc. Des Plains, IL 1989