Ford Global Technolgoies, LLC

Ford Motor Company Limited

Visteon Global Technolgoies, Inc.

Gerald Adam Grab

Matthew John Zaluzec

Henry Mehraban

Ronald Paul Cooper

Tim Van Evans

Walter Leon Winterbottom

Furqan Zafar Shaikh

Robert F Novak

Kimberly Ann Lazarz

Gregory Hugh Smith

Timothy Van Evans

Craig Edward Burch

Martin Andrew Brogley

Michael Raymond Rigley

Warren A Smith

Robert Walter Grenkowitz

The invention is a method of forming a conversion coating on an aluminum surface. According to the method, the aluminum surface is conversion coated by first treating the surface with thermal degreasing or aqueous alkaline degreasing and then contacting the treated surface with an aqueous bath solution of KF. The concentration of KF in the solution is 2.0-25.0 wt. % and the temperature is 90-212&deg; F. for at least 5 seconds. The conversion coating consists essentially of: (a) substantially all K AlF or (b) a mixture comprising a major proportion of K AlF and a minor proportion of KAlF

Conversion coatings on aluminum from KF solutions

A heat exchanger assembly includes at least one tube having an internal surface and an external surface, a composition cladding having at least lithium and magnesium applied to either one of the internal surface and external surface of the tube, and at least one component disposed adjacent the composition cladding, whereby the tube and component are joined together during a controlled atmosphere brazing process.

Heat exchanger and method of assembly for automotive vehicles

Method of rapidly producing a contoured part, comprising: designing a computer graphic model of the part, sectioning the graphic model into graphic members which are at least one of blocks or slabs, carving a solid member (14-150 mm in thickness) for each of the graphic members, the solid member being proportion to and enveloping such graphic members, the carving being carried out by accessing two or more sides (opposite sides) of such solid member to at least essentially duplicate the corresponding graphic member, and securing the carved solid members together to replicate the graphic model as a usable unitary part. The method can be modified to make castings by carving wax or foam solid members which are assembled to form an investment pattern, the was pattern being used in a shell mold casting steps and the foam pattern being used in evaporative casting steps.

Rapidly making a contoured part

An improved method of brazing of two unclad aluminum shapes, particularly for automotive heat exchangers, which brazing joint does not leave a physically apparent layer of brazing material and which effects a stronger, sounder autogenous joint. A thin film of aluminum eutectic forming material (Si, Al-Si or Al-Zn) is deposited onto a zone of at least one of the shapes to be brazed or joined. The shapes are placed in joining relationship to form an assembly with a joint at the zone. The assembly is heated to a temperature to diffuse the eutectic forming material into the aluminum members to form a sacrificial bond between the shapes at the joining zone. It is desirable that at least one of the unclad aluminum shapes to be joined is extruded tubing having a precise diametrical configuration and said film is deposited as a physically vapor deposited layer in a thickness range of 1-50 microns.

Thin film brazing of aluminum shapes

Growing community of inventors

Trenton, MI, United States of America

Gerald Adam Grab