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Aviation History
1959
1959 - 2166.PDF
4 SEPTEMBER 1959 FLIGHT De-icing Protection WITH A DIFFERENCE STAND No. 198S.B.A.C. EXHIBITIONFARNBOROUGHSEPT. 7th-13th MICROGRAIN A new type of nickel deposit, MICROGRAIN, which is extremely hard yet flexible, has been developed for the protection of aircraft de-icing equipment. Tests show that MICROGRAIN propeller-edge and air-intake electroformed sheaths are so highly resistant to damage and deformation by dust, stones and rain erosion at impact speeds of up to 500 m.p.h. to be in all respects superior to stainless steel for de-icing equipment protection. Fatigue tests have shown that the material has a higher fatigue strength than the component to which it has been fitted. The most recent tests in resistance to erosion by water show no apparent effect on the surface of the nickel under conditions of a supposed component flying at the above speed through rain at 3in per hour for 35 hours. DALIC This process is widely used throughout the aircraft industry for the re-zinc plating of damaged propeller blades. Rhodium plating of commutators is an additional function of this process. The advantages to be gained by Rhodium plating are that the metal has a low electrical resistance, is non-oxydizing and has a hardness of 5-600 Brinell and a lower coefficient of friction than that of copper oxide. The DALIC technique obviates the numerous difficulties experienced in both plating a complete wound armature. Micrograin nickel protects the air intakes of the Tyne engines on the Yickers Vanguard METACHEMICAL PROCESSES LTD 41/43 GATWICK ROAD, CRAWLEY, SUSSEX Tel: Crawley 25241 20 HARROW ROAD, BOURNBROOK, BIRMINGHAM 29 Tel: Selly Oak 2556 Comparatively speaking The difference between the new Bosch High Frequency Grinders with dust-proof motors and ordinary electric or pneumatic tools is well-nigh incredible. High Frequency Tools are cheaper to install, cheaper to run, lighter and safer. The power loss, when many tools are running simultaneously off the same power source, is negligible com- pared with that of pneumatic tools. There's a complete range of drills, polishers, screwdrivers, sanders and shears. Make your own comparison. Write to the address below, and we'll send you full details. BOSCH HIGH FREQUENCY GRINDERSWITH DUST-PROOF MOTORS Details from: BOSCH LTD., 20 CARLISLE ROAD, LONDON, N.W.9 COLindale 0161
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