From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Trial of nitrifying hardening on 'SS' and aero engine components.
| Identifier | ExFiles\Box 17\6\ Scan065 | |
| Date | 19th November 1928 | |
| X7060 BY.{R.W. Bailey - Chief Engineer} from R.{Sir Henry Royce} c. to BJ. Wor.{Arthur Wormald - General Works Manager} c. to Hs.{Lord Ernest Hives - Chair} RL/M19.11.28. NITRIFYING HARDENING. X.4469 X.3822 X.7060 X.4003 X.7090 The first things to try in this are the 'SS{S. Smith}', and aero engine, valve gear followers, and camshaft. The thing it seems least suitable for is the sliding change gear, and piston pins. The SS.{S. Smith} cam followers should be put in hand at once. It may be necessary to make them in this material, and anyway they should be better. R, | ||