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).
Requesting tests on the effect of heat treating aluminium castings to hasten the ageing process.
| Identifier | ExFiles\Box 148\3\ scan0031 | |
| Date | 2nd February 1924 | |
| X1476 Mr. RHC.{R. H. Coverley - Production Engineer} C. Hs.{Lord Ernest Hives - Chair} C. SHD C. Py. Rg{Mr Rowledge}1/W16. 2. 24 I want to try the effect of heat treating aluminium castings, and also whether we can hasten the ageing process. Will you therefore please make tests as follows:- (1) A fatigue test, using our standard rotating test piece, and also (2) Tensile tests on castings cast on the same date. The first set of test pieces should be cast in ordinary crankcase alloy, one tested without heat treatment, one tested annealed at 200°C. in oil for 2 hours, and the other heated for 2 hours in oil at 200°C., and then for 20 minutes at 250°C., afterwards being taken out and quenched in oil. It will be necessary to have duplicate test pieces for each test. We should also test Hall's Crankcase Alloy, with the small zinc content. Rg.{Mr Rowledge} | ||