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).
Instructions regarding the metallurgical examination of a fractured crankshaft.
| Identifier | ExFiles\Box 76\3\ scan0055 | |
| Date | 10th April 1918 | |
| R.R. 300 (120 B) (SC. 576. 25.2.16) E.P. 1262 ROLLS-ROYCE LIMITED. 59212 INSTRUCTIONS. To: By Mr Hives Date: 10th April 1918 Order No.: Customer's No.: Laboratory Re: B.D. Crankshaft - no 140 - Examination of fracture does not give definite indication of flaw though the piece is rather coarse in one part. Microscopically the crystal grain shows to be a little coarser than average & there is evidence of rather considerable carbide separation as hard particles. There is no cellularity however. The steel appears to be in a satisfactory condition from the heat treatment point of view. With respect to composition see my report. L.L. 146 of yesterday. Signed: HC This Sheet must be filed on completion of the work. Just heard tensile result Y.P. Elong R.a. Br Stanton 68.8 61.6 20.4 55.0 321 5166 | ||