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- Publisher
- Emerald Publishing
- Copyright
- Copyright © Emerald Group Publishing Limited
- ISSN
- 0002-2667
- DOI
- 10.1108/eb032819
- Publisher site
- See Article on Publisher Site
Abstract
sprayed on to the component, and then washed with clean water. It leaves a film which inhibits corrosion, but which is compatible with paint. The export agents are Norton Giles & Co. Ltd., 35 Bessborough Place, London, S.W.I. Brief Particulars of Recently Introduced Materials Reaming, Tapping and Drilling Lubricant likely to have Aircraft Applications Rocol Ltd., Rocol House, Swillington, near Leeds, have developed a material called Rocol R.T.D. which is claimed to give markedly increased tool lives when Chrome Plating of Plastics change is necessary at a later date, no damage can drilling, reaming and tapping stainless and high alloy occur to the copper foil due to careless hand soldering. steels, nickel alloys, and titanium. The compound Industrial Mouldings (Warwick) Ltd. have evolved One of the main features of the receiver is the use can be used neat, or in combination with cutting oils a process, I.M. Plastichrome, whereby plastic mould of printed circuit sheet connexions at the rear of the or paraffin. ings can be chromium plated. sockets. This demonstrates that dip soldering or auto They claim that components so treated can be used matic soldering techniques can be as readily applied in almost any application where zinc-alloy diecastings Neoprene Coatings to these inter-connecting points as to the individual are used, and in some instances where a diecasting or replaceable units. In fact, throughout the receiver The most effective way of improving the weathering a stamping would be impracticable. I.M. Plasti practically all wired joints have been eliminated. and abrasion resistance of plastics laminates which are chrome Mouldings are said to be very resistant to exposed to the airstream on high performance aircraft corrosion and blistering, and they are lighter than Chemical Polishing Solutions is to apply a 0·010 in. neoprene coating. This has the diecastings or stampings or a comparable size. In advantage of not influencing the dielectric properties strength the mouldings compare favourably with Albright & Wilson Ltd., 49 Park Lane, London, of radomes and antennae housings. A range of neo pressure diecastings. W.I, have issued data sheets on two chemical polish prene coating materials is now being distributed, under ing solutions for aluminium and its alloys, known as They possess negligible thermal conductivity, and the name Semprene-Adcora, by E. & F. Richardson Phosbrite 150 and 159. They are suitable for all grades cost in some cases has been found to be less than that Ltd., Buckingham. The material is manufactured by of pure aluminium, and all alloys except those of high of plated components. Semtex t Ltd., fro m neoprene supplied by E. I. du silicon content. Pont de Nemours & Co. (Inc.), who will shortly be Phosbrite 150 is a slow acting solution which re S.B.A.C. Materials Data Sheets operating a production plant in Northern Ireland. moves about 0·75 thou. of metal in a three minute To help the industry familiarize itself with the new Aircraft industry sales are being handled by Cellon polishing period. It is suitable for use on aluminium 'S.500 series' British Standards for steel sheet and Ltd. which is only lightly scratched, and gives good results strip, the S.B.A.C. has issued an addition to the range on aluminium which has been mechanically polished The coatings are largely used for the protection of of S.B.A.C. Materials Data Sheets. previously. steelwork in corrosive applications, and can be built The new schedule, MAT.6—Sheet and Strip, com up to a considerable thickness while retaining good Phosbite 159 is an up-to-date version of the Alupol plements the recently revised MAT.1 covering speci adhesion and abrasion resistance. solution which is widely used on the Continent. It is fications for steel bars and forgings. It provides a a rapidly acting solution which removes 3 thou. of quick reference to the complete British Standard metal during a three minute polishing period, and is Controlled Stretched Plates range for steel sheet and strip and also to those effective for polishing aluminium which is badly D.T.D. specifications still available for more special Controlled stretched Duralumin plates, which were scratched or has other surface imperfections. ized requirements. previously available only from the United States, are Copies of the schedules and of data sheets MAT.2-5 now being manufactured in this country by a special Contact Adhesive covering aluminium alloys in the form of sheet, strip, process developed by James Booth & Co. Ltd. A new contact adhesive for a variety of applications castings, bars, forgings, extruded sections and tubes, (Argyle Street Works, Birmingham, 7). known as Tretobond 404 is being marketed by Tretol are available from the Society of British Aircraft The largest plates of a number recently supplied Associated Products Ltd., Tretol House, The Hyde, Constructors Ltd., 29 King Street, St. James's, Lon were 25 ft. 4 in. long, 2 ft. 8 in. wide and 2 in. thick, London, N.W.9. It is suitable for fixing materials such don, S.W.1, price \s. per copy or 6s. per set of six weighing 1,880 lb. each, and all had been subjected to as plastics films, wood, cork, rubber and fabrics, and sheets. a controlled stretching operation to eliminate the in is resistant to moisture, oil, grease, petrol, and dilute ternal stresses. acids. It is a one-part adhesive, and provides a bond Zinc-rich Primer The plates were manufactured by a special process, immediately on contact. combining both forging and rolling operations, to en A primer for iron and steel which gives a coating sure that in spite of their thickness they are uniform in containing about 95 per cent zinc has been developed Rubber Mounting Pads mechanical properties and are not subject to the un by Corrosion Ltd., 16-18 Malvern Road, South Vulcascot (Great Britain) Ltd., 87-89 Abbey Road, desirable core effect to which plates of this size are ampton. The zinc is made up with a synthetic resin London, N.W.8, have developed a type of rubber pad liable when produced solely by rolling. To ensure binder and solvent, and the dry coating gives pro for use as an anti-vibration mounting for machine that the finished plates were free from internal defects, tection similar to that of galvanizing, although tools, and other equipment. The material is sold in they were examined by ultra-sonic methods at two abrasion resistance is lower. The material is available sheets 5/16 in. thick with deep square-section ribs for stages—first as a cast ingot and later as a finished in forms which can be applied to wet surfaces. each face, the ribs on one side running at right angles plato; to those on the other. It is claimed that this construc All plates treated in this manner conform to D.T.D. Bakelite Copper-Clad in Printed Circuits tion gives the pads such grip that in many cases bolting specifications 5010, 5020 or 5050, and are claimed to down of the machines is unnecessary. Loads of up to The compact design of a sub-miniature radar be particularly useful in methods of construction 4 tons per sq. ft. of pad can be carried. receiver recently introduced by Elliott Brothers (Lon where components have to be machined from thick don) Ltd., Borcham Wood, is due to the fullest use of plates. Although the size of the plate quoted is be Soluble Degreasant printed circuit techniques. The receiver comprises six lieved to be the largest yet made in this country it is replaceable plug-in units, five of which are made with A new degreasant known as Hilo has been devel claimed that plates up to 35 ft. long can be supplied if all components on one side of a Bakelite copper-clad oped by the Gre-Solvent Co., Junction Works, White required, subject to a maximum cross-sectional area laminated sheet, the etched circuit, including gold- hall Road, Leeds, 12. The material is brushed or of 65 sq. inch. plated etched plugs, being arranged on the opposite side to allow connexions to be made by dip soldering. Where valve wires are to be connected, small eyelets have been inserted into the board so that if a valve 128 Aircraft Engineering
Journal
Aircraft Engineering and Aerospace Technology – Emerald Publishing
Published: Apr 1, 1957