Telegram copy detailing the heat treatment procedure for frames made of 3% nickel steel.
| Identifier | ExFiles\Box 75\3\ scan0263 | |
| Date | 10th February 1913 | |
| C O P Y. X.962 X703 Re Frames. Mr Bagnall Na {Mr Nadin} 31/B28813. Below is a copy of a telegram received from Mr Wormald this afternoon. We should give this immediate effect.- "Heat treat all front ends of frames beyond cross members." The steel from which the frame is made should contain about 3% nickel steel, and should give good results if hardened as follows:- (1) Heat up to 800º Cent. and quench out in oil. (2) Re-heat to about 400º Cent. and allow to cool out in the air. In fact they may be treated in the same way as we treat our other 3% nickel steel. The Frames should be quenched for not less than 6" behind the centre of the front tubular cross member. [STAMP TEXT] REC'D W.M.L. 10 FEB 1913 | ||
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).