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).
Use of the nitriding process on H.R. Crown Valve Steel for inlet valves.
| Identifier | ExFiles\Box 154a\1\ scan0262 | |
| Date | 3rd June 1932 | |
| WOR{Arthur Wormald - General Works Manager} (crossed out) c. Rg.{Mr Rowledge} (crossed out) c. Hs.{Lord Ernest Hives - Chair} (crossed out) c. ROY{Sir Henry Royce} (crossed out) X1474. (handwritten) BY.1/G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 8.6.32. H.R. CROWN VALVE STEEL - ROY.{Sir Henry Royce}7/MG. 3.6.32. ------------------------- I am definitely of the opinion that we can use all the valve steel up for inlet valves providing we treat the finished valve by the nitriding process, so that we obtain a hard skin on the spindle of the valve. We instructed this experimentally some time ago, but the matter seems to have been overlooked. [STAMP] RECEIVED 8 JUN 32 BY.{R.W. Bailey - Chief Engineer} By (handwritten signature) | ||