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Heavier Coats by Brushed Rust-proofer
Page 116
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ALIQUID coating system for rust proofing iron and steel offered by Metalife Liquid Metals, Ltd., Harrogate, Yorks, permits 2.1 oz. of anodic metals to be deposited on each square foot of the base metal in two brushed coats. This is said to be equivalent to good quality galvanising. It is known as the Metalife Duplex system and comprises two constituents (a base and a solidifier) which are mixed before application to Form a non-toxic compound which will withstand temperatures from —65°F. to 400°F. dry heat.
The coating can be applied to damp surfaces and dries in about six hours. Coverage is approximately 1,400 sq. ft. per cwt. of material. The compound is not subject to serious settlement in the can and is said not to drip or run when applied.
Low-speed Pump UNNING at only 700 r.p.rn. the Ljungmans 3-in.-bore gear pump for road tankers has a nominal output of 195 gal, per minute when handling petrol or heavy oils. Thus, the engine of the tanker need be run only at low speed whilst pumping. The pump, which weighs 145 lb., incorporates an adjustable by
pass valve which can be changed over to allow _the unit to run in reverse.
A similar 2-in.-bore pump weighing 93 lb. is also available and both types are marketed in this country by J. S. Webber, 6 Stanley Road, Chingford, London, E.4. The 2-in, model costs £72 whilst the larger pump is priced at £154.
Treating Light Alloy C'MLOCK 720, offered by Durham Raw Materials, Ltd., 1-4 Great Tower Street, London, E.C.3, is a chemical surface treatment for aluminium alloys which improves the adhesion of paints, lacquers and enamel to the base
"metal, The Chemlock system can be applied by spray or immersion and is claimed to give a paint-to-metal bond which is so strong that the paint fihn will fail internally before it strips off.