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Enclosure for Painting and Enforcing Evaporation U.S. PaleM5,397,606. Mr. 14, 1995 C.S. Jetis, ass&nor to imperia Chamical industries PLC, London
A method of forcing evaporation of a solvent such as water from a coating on a predefined surface of a panel comprising directing a jet of air from an air supply held at a predetermined distance from the panel towards one edge region of the panel, the jet being substantially narrower, when it reaches the panel edge region than the length of the panel edge and the jet being inclined to the plane of the panel such that the air from the jet is entrained by the panel in a spreading, predominantly laminar flow across the panel surface.
Colored Stainless Steel U.S. Patent5,397$52. Mar. 14, 1995 J.E Carey and N.R. Ha&e, assignors to The Louis Serkman Co., Steubenville, Ohio
A method of providing a colored protec- tive layer on a ferrous strip surface by a continuous process, comprising pretreating for removing oxides; providing a tin coat- ing of less than 0.002 in. thickness to create
an intermetallic ahoy layer containing chromium, tin, and iron, said tin coating provided by passing the strip at less than 150 ftlmin through a molten bath of tin maintained at least 449’F, cooling the tin- coated ferrous strip; and removing the tin coating with an oxidizing solution to ex- pose the intermetallic layer.
Aqueous Cleaning Method U.S. Patent5,399,204. Mar. 21, 1994 IJ. Campo et al., assignors to The Gillette Co., Boston
A method of removing contamination from the surface of an article, which in- cludes moving the article along a continu- ous path through a prewash station, a wash station, a rinse station, a final rinse station, and a plurality of drying stations.
Parts Cleaning Machine U.S. Patent 5,395,708. Mar. 21, 1995 M W. Sheldon, Grass Va//ex Calif.
A device for removing surface contam- inants from articles comprising in combi- nation a cabinet having an interior receiv- ing the articles, including means for automatically delivering cleaning fluid; a
sink having a basin for supporting articles and a means for manually delivering clean- ing fluid; and a reservoir operatively cou- pled to both sink and cabinet.
Method for Crown Plating a Camplate U.S. Patent5,398,791. Mar. 21, 1995 M.D. Tombers et al, assignors to Genera/ Motors Cop., Detroit
A camplate for an overrunning clutch, the camplate having a plurality of ramps defined at a perimeter of the camplate, wherein the ramps are electroplated by a method comprising circumscribing the pe- rimeter of the camplate with a mask, and electroplating the ramps such that a greater thickness of metal is deposited on the in- termediate regions than on the edge re- gions, so as to more uniformly distribute a bearing load imposed on each of the ramps by roller bearings.
Electrostatic Powder Coating U.S. Patent 5,399,199. Mar. 27, 7995 KG. Ghaisas, Anand Tarang, lndia
Apparatus for electrostatic powder coat-
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METAL FINISHING . OCTOBER 1995 95
ing, comprising a powder-spray module having a substantially vertical rotary shaft carrying an impeller at a lower end of the shaft, a vertically movable sleeve sur- rounding in spaced relationship the rotary shaft and providing an air passageway in communication with the impeller, and a nonrotatable nozzle assembly supported by the module and constructed and arranged to provide and transport a stream of electro- statically-charged powder downwardly to the center of the impeller.
Zinc Phosphate Process U.S. Parent5,399,205. Mar. 21, 1995 ‘I: Sobata et al., assignors to Nippon P&f Co. ltd., Osaka, Japan
A method for forming a zinc phosphate coating on a metal surface containing alu- minum, comprising contact with a treating solution; passing the treating solution to an external bath; adding a simple fluoride to the treating solution in the external bath thereby precipitating aluminum ions in the external bath; separating the precipitated aluminum from the treating solution; and returning the treating solution from which the precipitated aluminum has been sepa-
rated to the treating bath; wherein the treat- ing solution is adjusted in concentration so as to contain the simple fluoride in a con- centration range of 200-300 mg/L.
Conversion Coating for Aluminum U.S. Patent 5,399,210. Mar 21, 1995 R.N. Miller, Ga., assignor to Lockheed Corp., Calabasas, Calif.
A process for producing a corrosion- resistant chemical conversion coating on aluminum and aluminum alloys comprising subjecting a cleaned, degreased, and deox- idized aluminum to an alkaline solution containing sodium molybdate, sodium ni- trite, and sodium metasilicate.
Chromating Treatment U.S. Pafent5,399,209. Mar. 21, 1995 A. Suds and T: Ogina, assignors to He&e/ Corp., Plymouth Meeting, Pa.
A method for the chromate treatment of metal surfaces by contact with an aqueous acidic composition consisting essentially of 4.0 to 51.0 g/L of hexavalent chromium; 6.0 to 38.0 g/L of trivalent chromium; 0.5 to 97.0 g/L of phosphate ions; 0.01 to 2.90
M of a component selected from the group consisting of sulfate ions, nitrate ions, flu- oride ions, and mixtures thereof; and 0.003 to 0.85 M of a component selected from the group consisting of cations of copper, co- balt, nickel, tin, iron, and lead and mixtures thereof, wherein the trivalent chromium/ hexavalent chromium weight ratio is in the range 0.2 to 1.4.
Magnetron Sputtering Apparatus U.S. Patent 5,399,252. Mar. 21, 1995 M. Scherer et al, assignors to Leybold AG, Hanau, Germany
Apparatus for coating a substrate by magnetron sputtering, comprising an evacuable coating chamber, at least one magnetron cathode in the coating chamber; a target associated with each cathode, com- prising an oval ring of material to be sput- tered; bar means of stainless steel including outer bar means surrounding the oval ring and inner bar means located centrally of the oval ring; and insulating means between the bar means and the cathode, said stain- less steel plates being electrically grounded.
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