Copeland Corporation

Emerson Climate Technologies Gmbh

Warren G Williamson

Scott S Hendrie

Aluminum alloys are provided that have improved fluidity and elongation, as well as freedom of die soldering. The aluminum alloys are particularly suitable for die-casting of structural components. The aluminum alloy includes silicon at from about 8 weight % to about 11 weight %, manganese at from about 0.8 weight % to about 1.9 weight %, iron at from about 0.1 weight % to about 0.5 weight %, magnesium at from about 0.2 weight % to about 0.7 weight %, boron at from about 0.002 weight % to about 0.15 weight %, strontium at from about 0.006 weight % to about 0.017 weight %, less than about 0.25 weight % copper, less than about 0.35 weight % zinc, less than about 0.25 weight % titanium, and a balance of aluminum. Methods related to the aluminum alloys are also provided.

Aluminum alloy compositions and methods for die-casting thereof

Methods of casting improved scroll compressor components having high quality involute portions are provided. The casting method comprises gating molten metal through a patterned region of a core or mold defining the involute vanes. In certain aspects, during casting, molten metal passes through one or more gates that extend through a core in a central patterned region that forms the involute portion of the scroll component. In certain variations, the metal comprises a gray cast iron, so the cast part comprises an involute having a matrix of pearlite and Type A graphite that is substantially free of undercooling defects. Further, in certain variations, the involute portion is substantially free of Types B-E graphite. Thus, high-quality low-defect cast scroll components are formed having good machinability and superior fatigue strength.

Methods of casting scroll compressor components

An apparatus and method for casting metallic components is disclosed. The apparatus has a vertical parting line and a gate configuration which reduces defects within the cast components.

Green sand casting method and apparatus

A system for making a gray cast iron scrolls using a high performance inoculant.

Gray cast iron system for scroll machines

A lost foam casting method for the manufacture of scrolls.

Growing community of inventors

Sidney, OH, United States of America

Warren G Williamson