Novelis, Inc.

Alcan International Limited

Honda Motor Co., Ltd.

Nippon Light Metal Company, Ltd.

Kevin Michael Gatenby

Iljoon Jin

Toshiya Anami

Ichiro Okamoto

Pierre Henri Marois

Edward S Luce

Willard Mark Truman Gallerneault

Andrew D Howells

Yoshito Oki

Noboru Hayashi

Kunihiro Yasunaga

Pizhi Zhao

Thomas L Davisson

Ronald Roger Desrosiers

Hitoshi Kazama

Christopher M Gabryel

Jyothi Kadali

Simon Barker

Eric Lees

Willard Mark Gallerneault

Don Allen Doutre

Michael Jackson Bull

Hany Ahmed

John Fitzsimon

Peter Alexander Wales

Jean-Pierre Martin

Daniel Godin

Rejean LeBlanc

Gijsbertus Langelaan

Jeff Ballyns

Alan Robert Carr

Fred Perdriset

Mark Gallerneault

Ian Smith

Edwin Stanley Luce

Eider Alberto Simielli

Takahiko Watai

Christopher Gabryel

Eric Robert Lees

Edward Stanley Luce

Rejean Leblanc

Kunihiro c/o Honda R & D Co Ltd Yasunaga

Ichiro c/o Nikkei Techno R & D Ctr Okamoto

Toshiya c/o Nikkei Techno R & D Ctr Anami

Noboru c/o Honda R & D Co Ltd Hayashi

Hitoshi c/o Honda R & D Co Ltd Kazama

Pizhi c/o Nikkei Techno R & D Ctr Zhao

Provided herein are new aluminum alloy materials which are useful in replacing copper in a heat exchanger. The aluminum alloy materials are also useful in manufacturing components of heating, ventilating, air-conditioning, and refrigeration (HVAC&R) systems for indoor and outdoor units. The alloys are well-suited for tubing in a heat exchanger. The alloys display high strength and good corrosion resistance. Also provided herein are methods for making the aluminum alloy materials.

High strength and corrosion resistant alloy for use in HVAC and R systems

The present invention relates to an aluminum alloy product for use as a finstock material within brazed heat exchangers and, more particularly, to a finstock material having high strength and conductivity after brazing. The invention is an aluminum alloy finstock comprising the following composition in weight %: 

Aluminum fin alloy and method of making the same

The present invention provides a new aluminum alloy material which may be used for a core alloy of a corrosion-resistant brazing sheet. This core alloy displays with high strength, and good corrosion resistance for use in heat exchangers. This aluminum alloy material was made by direct chill (DC) casting. The present inventions also provides corrosion-resistant brazing sheet packages including the aluminum alloy material as a core and one or more cladding layers.

Brazing sheet core alloy for heat exchanger

This application discloses a corrosion-resistant brazing sheet package for use in manufacturing tubing. The brazing sheet package includes a core layer of aluminum-containing alloy comprising from 0.1 wt % to 0.2 wt % of titanium. The core layer has a first side and a second side. The first side of the core layer is adjacent to a first cladding layer to form a first interface. The second side of the core layer is adjacent to a second cladding layer to form a second interface. The first cladding layer and the second cladding layer each include from 2.5 wt % to 4.0 wt % of zinc.

Corrosion-resistant brazing sheet package

Embodiments of the invention relate to a method and apparatus for continuously casting a metal slab. The method involves continuously introducing molten metal into an inlet of a casting cavity defined between advancing casting surfaces, cooling the metal in the cavity to form a metal slab, and discharging the slab from the cavity through an outlet. The casting surfaces have an ability to remove heat from the metal but this ability is reduced, thus reducing heat flux, for at least one of the casting surfaces in a region of the cavity spaced from both the inlet and the outlet and extending transversely to the casting direction. This reduced ability to remove heat is relative to such ability of the casting surface in immediately adjacent upstream and downstream regions of the cavity. The apparatus may be a twin belt caster or other form of continuous caster modified to perform the method.

Method of and apparatus for casting metal slab

An aluminum alloy sheet is manufactured by preparing a slab having a thickness of 5 to 15 mm with a continuous casting machine by a continuous casting process using molten alloy containing 0.40% to 0.65% of Mg, 0.50% to 0.75% of Si, 0.05% to 0.20% of Cr, and 0.10% to 0.40% of Fe, a remainder being Al; winding the slab into a coil; cold-rolling the slab into a sheet; subjecting the sheet to solution heat treatment in such a manner that the sheet is heated to a temperature of 530&#xb0; C. to 560&#xb0; C. at a heating rate of 10&#xb0; C./sec or more and then maintained at the temperature for five seconds or more; quenching the sheet with water; coiling up the sheet; maintaining the sheet at a temperature of 60&#xb0; C. to 110&#xb0; C. for 3 to 12 hours; and then cooling the sheet to room temperature.

Aluminum alloy sheet and method for manufacturing the same

An aluminum alloy sheet having excellent press formability and stress corrosion cracking resistance, comprises 3.3 to 3.6 percent by weight of Mg and 0.1 to 0.2 percent by weight of Mn, furthermore, 0.05 to 0.3 percent by weight of Fe and 0.05 to 0.15 percent by weight of Si, and the remainder comprises Al and incidental impurities, wherein the sizes of intermetallic compounds is 5 &#x3bc;m or less, the recrystallized grain size is 15 &#x3bc;m or less in the region at a depth of 10 to 30 &#x3bc;m below the sheet surface, and the surface roughness is Ra 0.2 to 0.7 &#x3bc;m.

The exemplary embodiments relate to a multilayer aluminum alloy sheet material suitable for fabrication into coolant-conveying tubes, headers and the like used for heat exchangers, and to the tubes and headers, etc., fabricated from the sheet. The multi-layer metal sheet has a core layer of aluminum alloy having first and second sides. The first side has an interlayer made of a Zn-containing aluminum alloy positioned between a Zn-containing outer layer and the core layer. The alloy of the outer layer is more electronegative than the alloy of the interlayer. The alloy of the interlayer is preferably more electronegative than the alloy of the core layer. The first side clad in this way is the side intended for exposure to the coolant, and provides good resistance to corrosion and erosion.

Clad metal sheet and heat exchanger tubing etc. made therefrom

Exemplary embodiments of the invention provide a side dam for a continuous metal casting apparatus having elongated opposed casting surfaces forming a casting cavity. The side dam has an elongated upstream part and an elongated downstream part that are mutually laterally pivotable, and a smooth metal-contacting side surface extending continuously from an upstream end to a downstream end of the side dam. The surface has regions thereof formed on the upstream part and the downstream part. Mutual pivoting of the upstream part and the downstream part of the side dam enables the regions of the smooth metal-contacting side surface to be moved out of mutual coplanar alignment. The side dams can therefore be used to form either a convergent or divergent casting cavity to assists the casting procedure and to enhance the properties of the cast article.

Stationary side dam for continuous casting apparatus

A twin-belt casting machine for casting metal strip. The machine is provided with a casting cavity which includes an upstream fixed casting region, in which the belts are in fixed convergent paths in contact with the cast slab, and an adjacent downstream portion in which the belts are adjustable between alignment with the fixed convergent paths and non-alignment therewith (being less convergent or divergent). When the adjustable portions of the paths are moved outwardly relative to the fixed convergent paths, the belts separate from the cast slab at differing predetermined points within the casting cavity. By adjusting the downstream portion of the casting cavity in this manner, the casting machine can operate at essentially constant throughput for a wide range of alloys while ensuring that the cast slab exiting the caster has a temperature within a predetermined range suitable for further rolling to produce sheet product.

Belt casting machine having adjustable contact length with cast metal slab

A casting belt for using in a single-belt or twin-belt casting apparatus is disclosed. The casting belt is made of aluminum alloy such as an alloy from the AA5XXX and AA6XXX systems, preferably having a thickness in the range of 1 to 2 mm. The aluminum casting belt of the invention is suitable for casting non-ferrous and light metals such as aluminum, magnesium, copper, zinc and their alloys, especially aluminum alloys such as Al&#x2014;Mg, Al&#x2014;Mg&#x2014;Si, Al&#x2014;Fe&#x2014;Si and Al&#x2014;Fe&#x2014;Mn&#x2014;Si alloy systems. A belt casting machine and process using the aluminum casting belt of the invention are also disclosed.

Belt casting of non-ferrous and light metals and apparatus therefor

A method of producing a clad metal ingot suitable for rolling to form a clad metal sheet, and the clad metal ingot so produced. The method involves providing a solid core ingot having an upper side with a rolling face thereon having cavities extending inwardly into the ingot from the rolling face. All or all-but-one of the cavities are blocked against molten metal entry and casting cores extending outwardly from the rolling surface are provided in alignment with the cavities. Molten cladding metal is cast on the rolling face around the casting cores to produce a composite ingot and the casting cores are removed to produce voids in the cladding layer, and the cavities are unblocked. The resulting interconnected cavities and voids are filled with a molten metal to form cast-in-place metal lugs keying or pinning the cladding layer to the core ingot.

Method of producing clad metal products

An aluminum alloy foil is formed from an alloy containing about 1.2 to 1.7% by weight Fe and about 0.35 to 0.80% by weight Si, with the balance aluminum and incidental impurities. The alloy is continuously strip cast to form a strip having a thickness less than about 25 mm, which is then cold rolled to interanneal gauge and interannealed at a temperature of at least 400&deg; C. The interannealed strip is cold rolled and further annealed to form the final foil product, having excellent rollability combined with high strength of the final foil.

Production of aluminum alloy foils having high strength and good rollability

An improved aluminum alloy fin stock is described having both a high strength and a high thermal conductivity. The fin stock contains 1.2-1.8% Fe, 0.7-0.95% Si, 0.3-0.5% Mn, 0.3-1.2% Zn and the balance Al, and is produced by continuously strip casting the alloy at a cooling rate greater than 10&deg; C./sec. but less than 200&deg; C./sec., hot rolling the strip to a re-roll sheet without homogenization, cold rolling the re-roll sheet to an intermediate gauge, annealing the sheet and cold rolling the sheet to final gauge. This fin stock has a conductivity after brazing of greater than 49.8% IACS.

High conductivity aluminum fin alloy

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Kingston, Canada

Kevin Michael Gatenby