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De-Icing Protection WITH A DIFFERENCE "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 rn.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 su rface 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 advantaqes 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 DALlC technique obviates the numerous difflculties experienced
in bath plating a complete wound armature.
Micrograin nickel protects the air intakes of the Tyne engines on the Vickers
Vanguard
METACHEMICAL PROCESSES LTD
41 /43 GATWICK ROAD, CRAWLEY, SUSSEX Tel: Crawley 25241
20 HARROW ROAD, BOURNBROOK, BIRMINGHAM 29 Tel: Selly Oak 2556 |