ids, and salts of the acids; and 0 to 200 a of at least one compound selected from the group consisting of conductivity acids and conductivity salts.

Acidic Cleaning Solution for Aluminum U.S. Patent 5514,293. May 7, 1996 T Shimakura et al, assignors to Nippon Paint Co. Ltd., Osaka, Japan

An acidic cleaning aqueous solution for aluminum and aluminum alloy, which com- prises 0.5 to 2.5 g/L, of at least one inorganic acid, 0.002 to 5 g/L of bromide ions; 0.05 to 4 g/L of oxidized metallic ions; 0.1 to 10 g/L of surfactant; and an oxidizing agent, wherein the inorganic acid is a mixture consisting of sulfuric acid and nitric acid having a mixture weight ratio of sulfuric acid/nitric acid of 3O:l to 30:4.

Painting Elongated Workpiecs U.S. Patent 5,514,420. May 7, 1996 M. Suzuki and H. Nishida, assignors to Honda Giken Kogyo KK, Tokyo

A method of painting an elongated workpiece using a painting gun comprising a ring-shaped gun main body having a cir-

cumferential opening formed in one pe- ripheral portion thereof so as to allow for passage of the elongated workpiece as an object to be painted, and a plurality of at least three nozzles radially disposed so as to eject a paint towards a central portion of the gun main body, comprising moving the painting gun in a longitudinal direction of the elongated workpiece in a condition in which the elongated workpiece is placed in position inside the painting gun through the circumferential opening; wherein each of the nozzles consists of an air atomizing nozzle for atomizing the paint by injection of atomizing air, and wherein an amount of the paint to be ejected from each of the nozzles is set to 35 cc/min or less per 1 kg/cm* of an atomizing air pressure, wherein ejection of the atomizing air is continued even when ejection of the paint from any of the nozzles is stopped depend- ing on a shape of a portion of the elongated workpiece.

Painting of Plastics U.S. Patent 5,514,423. May 7, 1996 V. Krish et al., assignors to Ford Motor Co., Dearborn. Mich.

with Forty-Fm Years of Ultrasonic Expedence...

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If you have a historic parts cleaning problem, we’ve proba- bly had some experience clean- ing a similar part or material. Since 1951 Blue Wave has been applying the power of ultrasonic cavitation to cleaning aluminum, brass, ceramics, cop- per, glass, iron, nickel, plastics, printed circuit boards, steel, zinc and others. I

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An electrostatic painting method wherein multiple spray stations having al- ternating polarities are used to minimize the residual charge on a plastic substrate.

Coating for Metal Containers U.S. Patent $514,433. May 7, 1996 HI Cole, assignor to The Dexter Corp., Windsor Locks, Corm.

A coating composition for a metal sub- strate comprising 2 to 25% by weight of nonvolatile material of a low molecular weight polyfunctional epoxy novolac resin; 2 to 25% of nonvolatile material of a phe- nolic resin; 2 to 25% of nonvolatile mate- rial of a solution grade vinyl chloride co- polymer; 60 to 90% of nonvolatile material of a vinyl chloride dispersion resin; and wherein the coating composition is free of a plasticizer.

Corrosion-Resistant Coating for Aluminum U.S. Patent 5514,478. May 7, 1996 SK Nadkarni, assignor to A/can International Ltd., Montreal, Canada

An aluminum article having a surface bearing a nonabrasive, corrosion-resistant,

A merican Plating Systems recognizes the need for new concepts and methods in the manufacturing of plating equipment. American Plating Systems specializes in

plating equipment for electronics, packaging, P.C. Boards, Semi Conductors and orher related products. We have dedicated ourselves to designing and developing equipment that would make quality plating easier, more efficient and cost effective. With that focus, we produce products and accessories that exceed the quality standards of the industry. Ler Americaa Plating Systems show you how we’re

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96 METAL FINISHING . JANUARY 1997