A composition of matter for cleaning an

aluminum surface comprising 70 to 140

g/L of a hydroxy organic acid; 20 to 35 g/L

of an aminocarboxylic acid complexing

agent; an aqueous phosphorous oxide acid

at about 85% concentration in an amount

from SO to 60% by volume; an aqueous

nitrogen oxide acid at about 60 to 65%

concentration in an amount from 5 to 15% by volume; 0 to 20 g/L of a urea com-

pound; and 0 to 4 g/L of a compound

having a fluoride ion.

Paint Pump U.S. Patent 5,671.656. Se@. 30, 1997 N.A. Cyphers and EG. Mirazifa, assignors to Wagner Spray Tech Corp., Minneapolis

In a piston paint pump fluid section of

the type having a piston carried in a

housing and secured against leakage from

an inlet chamber to an outlet chamber by

an inlet seal located between the piston

and the housing. the improvement in combination therewith comprising the

piston being formed of unplated stainless steel and the inlet seal being a first mul-

tiple lip seal formed of a resilient elax-

tomer material.

Spraying System U.S. Patent 5,670,202. Sept. 23, 1997 R.J. Guzowski and D. W. Lazar, assignors to FANUC Robotics North America Inc., Auburn Hills, Mich.

A method and sys.tem for spraying a material in a pattern having a variable form comprising a mask for obstructing a se-

lected portion of the spray path.

Apparatus for Resist Stripping U.S. Patent 5671,760. Sept. 30, 1997 T Nakagawa et al.. assignors to Hirama RlKA Kenkyujo Ltd.. Kawasakishr and Nagase & Co. Ltd.. Osaka, Japan

An apparatus for controlling a resist

stripping solution. ct.)mprising a liquid level gauge: two absorption photometers: first replenishing means; second replenish-

ing means: and mean:, for discharging re- Xist stripping solution by detecting the dis- solved resist concentration in the resist

stripping solution employing one of the

two absorption photometers. wherein the

first replenishing means replenishes or- ganic solvent and alkanolamine by detect- ing the liquid level of the resist stripping

solution employing the liquid level gauge. and wherein the second replenishing means

replenisheh at least one of organic solvent and alkanolamine by detecting the alkano- lamine concentration of the resist stripping

solution employing the other of the two absorption photorncters.

Water-Soluble Pyrolytic Paint U.S. Patent5,670,259. Sept. 23, 1997 Y Hamada and Y Kameyama, assignors to Heat System Research & industry Inc., Tokyo

A water-soluble pyrolytic paint com-

prising a mixture that contains at least one metal carbide. at least one metal

nitride. at least one metal oxide. at least one metal horide. a~ least one metal sili- tide. at lea\t one additive metal selected

from the group consisting of tungsten and nickel. and a solvent that contains so- dium citratr. ethylene glycol. silicic acid

anhydride. sodium silicate, or a mixture thereof, and water

PROFILE OF ANOTHER SATISFIED CUSTOMER OF GA AT INFRA-RED

PAINT CURING- EQUIPMENT

Who: Nelson Zimmerman

What: Owner of Keystone Koating

Where: In the Mennonite community of Lititz, PA

Nickname ‘Mme. I only name my children: Crystal, for oven: Andrea, Alicia and Chad.

Use of oven: “We powdercoat the frames for stadium seats. They’ve got to be durable for fans of the Chicago Bulls, Colorado Rockies and Jacksonville Jaguars. I built my oven using Gas CatTM heaters. ”

Why Gas Cat’” “They cost less to run. I needed an 80% turn down ratio. I’ve just ordered more Gas CatTM units for another oven. ”

Catch us at the Automotive Finishing Show ‘98! m

~ _ _ _ _ _ _ _ _ _ “V ““V ” I IL”. “I”--rLn--rT&L

Email: jay4500241 @aol.com www.thomasregister.com/infra-red

Circle 039 on reader information card

88 METAL FINISHING l MAY 1998