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).
Letter from Adamant Engineering Company detailing a heat treatment process.
| Identifier | ExFiles\Box 153\2\ scan0131 | |
| Date | 14th October 1936 | |
| Contd: -2- 14th October, 1936. Messrs. Rolls-Royce, Ltd. Carborise at 880°C. Cool in box. Quench in oil from 880°C. Quench in oil from 780°F.{Mr Friese} Temper for 20 minutes at 200°C. Assuring you of our best attention at all times, We are, Yours faithfully, for ADAMANT ENGINEERING COMPANY, LIMITED. Managing Director. | ||