Page 34: of Maritime Reporter Magazine (May 1984)

Marine Coatings Review — International (continued from page 33) faces of such marine equipment as steam generator boilers and drums, economizers, water heaters, evap- orators, and steam turbine rotors.

It is applied by brush and dries tack-free in 16 hours.

Apexior Number 3K offers low- cost basic corrosion protection for difficult-to-prepare metal surfaces that are frequently wet or im- mersed in water at temperatures up to 140 F. It is recommended for service conditions where the use of expensive high-performance coat- ings cannot be justified.

Typical applications include con- densers, air receiver tanks, brine tanks, rudders and rudder posts, propeller blades and cones, and chain lockers. Apexior Number 3 can be applied by spraying or brushing; drying time between coats is 12 hours.

DEVOE PRUFCOAT

Circle 33 on Reader Service Card

Devoe Prufcoat of Baton Rouge,

La., a major producer of protective coatings and linings for industry, recently introduced its Chemline* 546 WB, a high-performance, two- coat, water-based epoxy system to provide superior protection for tank linings. The new product may also be used for steel and masonry

Tests prove water blasting at20,000 PSI removes subsurface corrosion cells.

Barnacles and marine growth can be easily cleaned with 20,000 psi on land or by using a zero thrust gun underwater.

In independent field tests. Coastal

Science Associates compared our new 20,000 psi Liqua-Blaster® with abrasive blasted surfaces - which often cause coating failures. They reported. "At 20.000 psi, we got to white metal... clean of hidden corrosion cells that interfere with paint life."

Our 20,000 psi Liqua-

Blaster safely allows one operator to remove depos- its that can't be removed with abrasive blasting.

Including older salt-rusted steel surfaces, paint, refractory build-up, concrete, aggregate and marine growth.

Challenge the 20.000 psi Liqua-

Blaster. Call or write for complete test results. 100X. Surface view. 0.00394 inch (.1mm).

Sand blasted.

Note corrosion cell. 130X. Surface view. 0.00394 inch (.1mm).

Cleaned with 20,000 PSI water blast.

Butterworth Inc.. 3721 Lapas Drive. P.O. Box 18312. Houston. TX 77223 USA.

Phone: 713-644-3636 or 1-800-231-3628. Telex: 775112 EXXON I'SAB.

Affiliates of Exxon Corporation. £ 1984, Butterworth. Inc. The "Butterworth" emhlem and "LIQUA-BLASTER art registered trademarks of BUTTERWORTH. INC. structures, and for plant and mill equipment.

According to Andy House, na- tional sales manager, Chemline 546 WB offers excellent chemical resistance, high solids, low V.O.C., fast water insensitivity, and may be applied over clean, sound old paint without involved preparation.

Devoe Prufcoat is a division of

Grow Group, Inc., one of the lead- ing U.S. producers of specialty chemicals and paint.

DREW AMEROID

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Drew Ameroid Marine of Boon- ton, N.J., has introduced a non- corrosive marine cleaner designed for engine cooling systems, which, unlike other products available in the industry, performs three key tasks in one step. The new one- step cleaner removes oxides and other minerals and light oils, much like an acid, but without the need for pretreatment solvents, to re- move oils, or neutralizers, to pre- vent flash rusting.

In addition to cleaning recircu- lating water systems, Ameroid one- step cleaner is suitable for parts such as exhaust valves, turbochar- ger parts, heat exchangers, piping, rotors, and filters. It is also an ef- fective brightener for aluminum, brass, and copper.

The water-soluble cleaner works to clean surfaces by penetrating quickly to remove exhaust carbon, oils, mineral scales, and the oxide layer itself. Dispersants in the product help to prevent redeposits on the cleaned surfaces.

The cleaner may be applied by one of a number of methods, in- cluding dip or hot tank soaking, recirculation, spray/high-pressure washing, steam lancing, power washer cabinets, and foam meth- ods. Economically concentrated, it performs consistently in a 20-per- cent solution at temperatures of 140-180 F. It may also be used at ambient, but longer cleaning time is required.

A very slightly contaminated engine water system or chilled water system may use a lower con- centration of the new Ameroid one-step as a system flush. Heav- ily rusted systems may require several cleanings at elevated tem- peratures with good agitation to achieve the desired results.

DUPONT STARBLAST

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DuPont "Starblast" of Wil- mington, Del., markets an abra- sive that is a blend of coarse and fine grains of staurolite mined from DuPont's heavy mineral de- posit located in Starke, Fla.

Repeated demonstrations con- firm that a ton of "Starblast" will clean three times as many square feet of metal surface as 36 Circle 292 on Reader Service Card Maritime Reporter/Engineering News