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Materials Science and Engineering Commons™
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Articles 1 - 3 of 3
Full-Text Articles in Materials Science and Engineering
Method For Reducing Macrosegregation In Alloys, Angus Hellawell
Method For Reducing Macrosegregation In Alloys, Angus Hellawell
Michigan Tech Patents
Macrosegregation in metal alloy castings and other alloys having similar solidification behavior is reduced by slowly rotating a mold or the like containing the liquid alloy about an axis at an acute angle to the vertical from the time the liquid alloy is poured into the mold until substantially all of the alloy has solidified. The mold is rotated at a speed below that which produces a centrifuging effect or causes stirring or agitation of the interdendritic liquid.
Method For Preparing Organic Hyponitrites, G. David Mendenhall
Method For Preparing Organic Hyponitrites, G. David Mendenhall
Michigan Tech Patents
Tertiary organic hyponitrite usable as initiators for polymerizing ethylenically unsaturated compounds are prepared by reacting an alkali metal, alkaline earth, ammonium or substituted ammonium salt of hyponitrite, such as sodium hyponitrite, with a tertiary organic halide, such as tert-butyl chloride, in the presence of one or more weak Friedel-Crafts catalysts, such as ferric or zinc chloride, and in a solution of a neutral solvent.
Method For Molding Articles Having Non-Planar Portions From Matted Wood Flakes, Bruce A. Haataja, Tauno B. Kilpela, Anders E. Lund, James F. Hamilton
Method For Molding Articles Having Non-Planar Portions From Matted Wood Flakes, Bruce A. Haataja, Tauno B. Kilpela, Anders E. Lund, James F. Hamilton
Michigan Tech Patents
An article having non-planar portions, such as a pallet having a substantially flat deck member and a plurality of hollow leg members projecting integrally from the deck member, is molded as a one-piece unit from a loosely-felted, layered mat formed from a mixture of a resinous particle board binder and flake-like wood particles. The wood flakes have an average length of about 11/4 to about 6 inches, preferably about 2 to about 3 inches, an average thickness of about 0.005 to about 0.075 inch, preferably about 0.015 to about 0.025 inch, and an average width of 3 inches or less …