Qi I Zhao

6453976, Sep 24, 2002

Oct 29, 1999

09/430652

George D. Chandley - Amherst NH
Qi Zhao - Nashua NH

Hitchiner Manufacturing Co., Inc. - Milford NH

B22C 904

164 34, 164 63, 164119, 164306, 164234, 164137, 164341

A vaporizable refractory coated pattern assembly is formed having a sprue connected to a plurality of thin wall patterns of articles to be cast. The pattern assembly is supported in a refractory particulate media in an open bottom container that is evacuated to subambient pressure and rotated in a manner to distribute particulates to regions of the refractory coated patterns not yet directly contacted by particulates. The pattern assembly is comprised of relatively dense foam plastic pattern material that imparts increased strength to the thin wall patterns. The sprue includes a vent passage that communicates to a particulate media to vent pattern decomposition vapors thereto in a manner that enables faster replacement of the pattern assembly in the media, despite the use of the relatively dense pattern material.

6283195, Sep 4, 2001

Feb 2, 1999

9/243292

George D. Chandley - Amherst NH
Curtis A. Harrison - Flint MI
Qi Zhao - Nashua NH

Metal Casting Technology, Incorporated - Milford NH

B22D 1300

164113

Tooling for handling molten or hot solid aluminum and its alloys wherein the tooling is made of a passivated titanium aluminide (TiAl) intermetallic compound having a thin passivating surface oxide film formed in-situ thereon by contact with an oxygen-bearing atmosphere at elevated temperature. The surface oxide film passivates and renders the tooling non-wetted by and non-reactive with molten aluminum and its alloys and non-bonded to hot solid aluminum and its alloys.

61895989, Feb 20, 2001

Oct 5, 1998

9/166788

George D. Chandley - Amherst NH
Qi Zhao - Nashua NH

General Motors Corporation - Detroit MI

B22C 904
B22C 702

164 34

Fold defects are reduced or eliminated in lost foam castings by contacting a destructible polymeric pattern surface proximate to which deleterious fold defects comprising unbonded seams are prone to form in the solidifying molten metal with a material that reduces or eliminates fold defects in the casting proximate the pattern surface. The material can comprise a silicone layer that is anti-sticking relative to a gas permeable refractory layer on the pattern or foundry sand directly contacting the pattern surface depending on casting configuration. The pattern is cleaned prior to contact with the material. Lower melt casting temperatures can be used with concomitant improvements in casting microstructure (e. g. finer dendritic arm spacing) and mechanical properties.

20170173668, Jun 22, 2017

Feb 27, 2017

15/442806

- Schenectady NY, US
Brian Victor Moore - Niskayuna NY, US
Michael Douglas Arnett - Simpsonville SC, US
Dejia Wang - Shanghai, CN
Junyoung Park - Greer SC, US
Yanfei Gu - Shanghai, CN
Qi Zhao - Niskayuna NY, US

General Electric Company - Schenectady NY

B22C 7/02
B01J 23/00
B01J 23/10
B22C 3/00
B22C 9/04

Refractory slurry for use in coating a foam cluster to provide a foam pattern for lost foam casting is provided. The slurry includes a catalyst capable of catalyzing reactions for vaporizing the foam cluster. A foam pattern with a refractory coating including the catalyst and processes for preparing the foam pattern and using the foam pattern are also provided.

20160271691, Sep 22, 2016

Mar 16, 2015

14/658664

- Schenectady NY, US
Adegboyega Masud Makinde - Niskayuna NY, US
Duncan Spalding Pratt - Albany NY, US
Huijuan Dai - Niskayuna NY, US
Longzhi Jiang - Florence SC, US
Qi Zhao - Niskayuna NY, US

B22D 27/00
B22D 41/00
B22D 21/04
B22D 1/00
B22D 18/06

A method involves filling a hydrogen-lean molten material in a crucible and closing a lid of the crucible and then feeding a first quantity of a compressed dry gas via the crucible to form a dry gas blanket on a surface of the hydrogen-lean molten material. The method further involves feeding a second quantity of the compressed dry gas to a mold assembly to purge the mold assembly and transferring the hydrogen-lean molten material via an opening of the lid of the crucible to a mold cavity of the mold assembly. The method further involves cooling the hydrogen-lean molten material to form a casting.

20160180996, Jun 23, 2016

Oct 23, 2013

14/060981

- Schenectady NY, US
Evangelos Trifon Laskaris - Niskayuna NY, US
Paul St. Mark Shadforth Thompson - Niskayuna NY, US
Tao Zhang - Niskayuna NY, US
Qi Zhao - Niskayuna NY, US
GuangZhou Li - Shanghai, CN

General Electric Company - Schenectady NY

H01F 6/06
H01F 6/04

A superconducting magnet system including a coil former, superconducting coils supported by the coil former, and one or more thermally conductive tubes. The one or more thermally conductive tubes are embedded inside of the coil former. The one or more thermally conductive tubes are in thermal contact with the coil former and arranged to receive a cryogen.

20140290892, Oct 2, 2014

Mar 24, 2014

14/223573

- Schenectady NY, US
Brian Victor MOORE - NIskayuna NY, US
Michael Douglas ARNETT - Simpsonville SC, US
Dejia WANG - Shanghai, CN
Junyoung PARK - Greer SC, US
Yanfei GU - Shanghai, CN
Qi ZHAO - Niskayuna NY, US

General Electric Company - Schenectady NY

B22C 7/02
B22C 3/00
B01J 23/10
B22C 9/04

164 34, 164249, 164 45, 502 1

Refractory slurry for use in coating a foam cluster to provide a foam pattern for lost foam casting is provided. The slurry includes a catalyst capable of catalyzing reactions for vaporizing the foam cluster. A foam pattern with a refractory coating including the catalyst and processes for preparing the foam pattern and using the foam pattern are also provided.