Paint Flushing System U.S. Patent 5,701,922. Dec. 30, 1997 R.E. Knipe, Jr. eta/., assignors to De~co Industries Ltd., Spring Valley, N.Y.

An apparatus for water-based flushing for paints and other coatings.

P o w d e r C o a t i n g D e v i c e U.S. Patent 5,702,209. Dec. 30, 1997 F. Mauchle, assignor to Gema Volstatic AG, St. Gallen, Switzerland

A powder feed device especially for powder coating material.

A n t i g r a v i t y B last C l e a n i n g U.S. Patent 5,702,289. Dec. 30, 1997 JM. Champaigne, assignor to Electronics Inc., Mishawaka, Ind,

A shot peening method comprising the steps of conveying media into a transport hose at a predetermined mass flow rate; supplying gas under pressure through an inlet opening for accelerating media to a conveyance velocity sufficient to convey the media through the hose; aiming the hose at a target workpiece; and discharging media from a terminal end of the hose toward the target workpiece to discharge the media upwards against the force of gravity to form a fountain.

H y d r o g e n P e r o x i d e P ick l ing of S ta in less Stee l u.s. Patent 5,702,534. Dec. 30, 1997 R.D. Rodabaugh and J.W. Leeker, assignors to Armco Inc., Middletown, Ohio

A process for removing scale from a ferrous alloy containing chromium com- prising pretreating the strip to crack the scale; immersing the strip into a first tank containing a first pickling acid to remove the cracked scale thereby forming a pickled strip; applying an aqueous solution free of dissolved iron and containing hydrogen peroxide to the pickled strip wherein any

remaining scale on the pickled strip be- comes activated by the peroxide; and im- mersing the activated strip into a second tank containing a second acid to remove any residual scale thereby forming a clean strip.

M e t h o d of A p p l y i n g a C o a t i n g u.s. Patent 5,702,578. Dec. 30, 1997 H. Umeda eta/., assignors to Mazda Motor Corp., Hiroshima, Japan

A method of applying a surface coating to a subject surface with a paint spray device, which forms a spray pattern of paint having a specified diameter compris- ing forming an undercoating on the subject surface; coating an opaque colored base layer over the undercoating; and coating a transparent layer containing dye coloring on the opaque colored base layer by rotat- ing the subject surface around an axis while continuously moving the subject surface along the axis.

C o r r o s i o n - R e s i s t a n t C o a t i n g u.s. Patent 5,702,581. Dec. 30, 1997 K.G. Keriin and P. Hamacher, assignors to Herberts GmbH, Germany

A process for painting metal substrates with a phosphate treatment and electro- phoretic dip coating without the use of environmentally hazardous metal com- pounds comprising pretreating the metal substrate with a spray or dip phosphate treatment solution without passivation treatment and without toxic metal com- pounds.

M e t h o d for S e l e c t i v e E lec t rop la t ing U.S. Patent 5,702,583. Dec. 30, 1997 J. W, Rischke and W. van Sprang, assignors to Meco Equipment Engineers B.V., Hertogenbosch, Netherlands

A method for selectively electroplating apertured metal or metallized products ob- tained by stamping or etching comprising continuously transporting apertured prod- ucts through a photoresist bath during op- eration, while the product are connected to a power source at least from a time the apertured products enter the bath until the apertured products exit from the bath so as to electrophoretically apply a fully closed photoresist layer to the apertured products; covering the apertured products after a dry- ing of the photoresist layer with at least one photomask at desired locations; exposing the apertured products covered with the at least one photomask; removing the photo- resist layer by means of a developing pro- cess from parts of the apertured products to be electroplated after removal of the at least one 'photomask, while a remaining part of the photoresist layer on the aper- tured products serves as a mask for the apertured products; and electroplating those parts of the apertured products from which the photoresist layer has been re- moved.

Plast ic S u b s t r a t e u.s. Patent 5,702,584. Dec. 30, 1997 L.N. Goenka et aL, assignors to Ford Motor Co., Dearborn, Mich.

A process of plating a metal on a plastic substrate comprising incorporating etch- able filler elements and etchant-resistant metal filler elements in the plastic substrate so that some etchable filler elements and some metal filler elements are continuous to the exposed surface of the substrate; etching the exposed surface of the plastic substrate to selectively remove the contig- uous etchable filler elements while leaving the contiguous metal filler elements ex- posed at the substrate surface; and plating a metal on the exposed surface of the sub- strate, using the exposed metal filler ele- ments as anchorages for the plating mate-

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• Nickel buffing (Lime) - Stainless Steel Compound - Aluminum Compound - Chrome Coloring Rouge - Green Rouge- Plastic Compound - Emery Cake - Jeweler's Rouge - Grease Stick - Abras-Ease Abrasive Belt Lubricant - All ferrous and non-ferrous buffing compounds, Bar, Spray or Paste. ISO 9002 Certified Compounds Scha~er Metal Aircooled (Bias type) Buffs - Bias Cloth and Sisal-Bias Sisal, Treated or Untreated - Sanitizer Buffs - Rubber Sectional Contact Wheels - Cloth or Abrasive

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180 M E T A L F IN ISHING • J U N E 1998

rial; said metal plating step involving the substeps of electroless plating a first metal layer on the substrate and electroplating a second metal layer on the first metal layer.

C o m p o s i t e Plated Art ic le U.S. Patent 5,702,763. Dec. 30, 1977 N. Feldstein, assignor to Surface Technology Inc., Trenton, N.J.

A process for plating a substrate to form a composite plated coating comprising con- tacting with 'a plating composition incorpo- rating particulate matter insoluble with the plating composition to yield a composite- plated coating with particulate matter dis- persed within the coating having a prede- terrnined varied density of codeposited particulate matter from a first region to a second region.

Coated Abrasive U.S. Patent5,702,811. Dec. 30, 1997 K-L. Ho and W.L Harmer, St. Paul, Minn.

A coated abrasive article comprising a backing having a layer of grains adherently bonded thereto by a binding material, wherein the layer of grains comprises abra- sive grains and nonabrasive composite grains.

Oxygen-Curable Coating Composition U.S. Patent 5,703,138. Dec. 30, 1997 S.E. Cantor and L. Levine, assignors to Dymax Corp., Tordogton, Conn.

A liquid coating composition compris- ing, on a weight basis, 15 to 60 parts of a free-radical reactive acrylate monomer; 5 to 25 parts of an air-curing polyether-ene polymer containing at least three acti- vated double bonds per molecule; a cat- alytic amount of photoiniatiator; and a catalytic amount of a dissolved transition metal ion, said composition being free from acrylated carbonate polymers, added active oxygen catalytic com- pounds, oxygen-reaction inhibitors, and inert solvents.

UV-Curable Coatings U.S. Patent 5,703,141. Dec. 30, 1997 P. Jin, assignor to Tarkett AG, Frankenthal, Germany

A UV-curable composition having a low viscosity and useful in the preparation of coatings having high tensile strength, high elongation, and high gloss retention, pre- pared by reacting a caprolactone adduct and an isocyanate in a first reaction,

wherein the product of the first reaction is further reacted with a hydroxyalkyl acry- late or mcthacrylate and an additional ca- prolactone adduct component, while the ratio of acrylate or methacrylate to capro- lactone adduct is adjusted in order to vary the hardness an flexibility of the composi- tion as desired.

Waterborne Coating U.S. Patent5,703,155. Dec. 30, 1997 S. Swarup and R.J. Sadvary, assignors to PPG Industries Inc., Pittsburgh

A waterborne coating composition hav- ing improved rheology control and appear- ance comprising a polymeric film-forming resin; up to 2.1% by weight of a hydropho- bic amorphous fumed silica; and 0.5 to 4.0% of a nongelled copolymer.

Radiation-Curable Powder Paint U.S. Patent 5,703,198. Dec. 30, 1997 F. Twigt nd R. van der Linde, assignors to DSM N. V., Heerlen, Netherlands

A powder paint containing a radiation- curable binder composition.

Modern Electroplating ~. F Lowenhe im 801 pages $170.00

This is the third edition of this valuable textbook. Numerous authorities have contributed summaries on principles of plating and metal finishing, control, maintenance, deposit properties, and troubleshooting. A worthwhile reference.

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METAL FINISHING • JUNE 1998 181