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).
Record of metal casting experiments with different die types and temperatures.
| Identifier | ExFiles\Box 115\5\ scan0197 | |
| Date | 1st November 1938 | |
| COPY. -3- Rm{William Robotham - Chief Engineer}/CFM.3/JH.1.11.38. (i) Cont'd.{John DeLooze - Company Secretary} 4 - Cast at 680° 5 - " 665° 6 - " 660° All castings made from this die are cracked. Modifications can be made to the die to suit the characteristics of the alloy which would produce castings free from cracks. (g) New type Billet Die without cored holes, poured from underside, the metal rising to form the casting - 1 - Cast at 705° 2 - " 730° 3 - " 750° 4 - " 730° 5 - " 690° 6 - " 720° (h) Die as above but cored hole formed by plunging bore into the metal in a semi plastic condition. This is an experimental type of job which we have been developing in the Foundry and the structure of the metal will be interesting when compared with that of the above - 1 - Cast at 730° 2 - " 700° 3 - " 710° 4 - " 730° 5 - " 730° 1.15 p.m. Finally - From the residue of the material in the crucibles two Cont'd.{John DeLooze - Company Secretary} | ||