Lost Foam.The AFS A distributed file system for large, widely dispersed Unix and Windows networks from Transarc Corporation, now part of IBM. It is noted for its ease of administration and expandability and stems from Carnegie-Mellon's Andrew File System. AFS - Andrew File System Lost Foam Div. provided metalcasters with a series of presentations and panels centered around lost foam patterns and molding. In their presentation, "Folds Formation and Prevention in the Lost Foam Aluminum Process" (04-080) Q. Zhao, Metal Casting Metal casting A metal-forming process whereby molten metal is poured into a cavity or mold and, when cooled, solidifies and takes on the characteristic shape of the mold. Technology Inc., T.W. Gustafson and M. Hoover, General Motors Powertrain, and M.C. Flemings, Massachusetts Institute of Technology Massachusetts Institute of Technology, at Cambridge; coeducational; chartered 1861, opened 1865 in Boston, moved 1916. It has long been recognized as an outstanding technological institute and its Sloan School of Management has notable programs in business, , discussed the fundamentals of lost foam aluminum casting, including various types of process-specific defects that were collected from both production and research environments to characterize and understand defect formation principles. Visual inspection (both real time and post cast) and surface analysis indicated that all the defects analyzed an·a·lyze tr.v. an·a·lyzed, an·a·lyz·ing, an·a·lyz·es 1. To examine methodically by separating into parts and studying their interrelations. 2. Chemistry To make a chemical analysis of. 3. , despite differences in shape, size, color and occurrence, have similar surface structures and share the same root cause in defect formation, it is the variation in fold formation path within and among castings that leads to an apparent complexity in defect appearance. Also presented during the sessions was an AFS Research Report, "Comparison of Aluminum Alloys and EPS (Encapsulated PostScript) A PostScript file format used to transfer a graphic image between applications and platforms. EPS files contain PostScript code as well as an optional preview image in TIFF, WMF, PICT or EPSI, the latter being an ASCII-only format. Foams for Use in the Lost Foam Casting Process" (04-110). Author D. Hess, General Motors Powertrain, examined aluminum alloys 319, 356 and 206 for use in lost foam. His findings showed that alloy 206 has similar castability, to alloys 319 and 356. In fact, metal front velocities In physics, Front velocity is the speed at which the first rise of a pulse above zero moves forward. In mathematics, it is also used to describe the velocity of a possibly propagating front in the solution of hyperbolic partial differential equation. and total defect area were found to be slightly higher for alloy 206. |
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