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).
Laboratory report on the chemical composition of deposits from water pump casings.
| Identifier | ExFiles\Box 131\5\ scan0111 | |
| Date | 30th December 1938 | |
| To Mr Radcliffe 1114 h o W Ru / pson Rm.{William Robotham - Chief Engineer}/Std. Hl/BPS. 2/JM.{Mr Morley} 30.12.38. Laboratory Report L.4736. Re: Deposits from Cooling Systems. -------------------------------- We have examined the deposits which were present in the water pump casings submitted - 3AX147 and 3AZ238, and have found them to consist of the following.- 3AX147. Chiefly aluminium oxide with moderate amounts of copper and iron oxides, traces of magnesium oxide and a little organic matter. 3AZ238. Chiefly aluminium oxide with small amounts of copper oxide. The colour of the deposit from 3AX147 was brown, and that from 3AZ238 white; the brown colour of the former being due to the iron oxide and organic matter present. These deposits have resulted from the action of the cooling water on the metallic parts; notably aluminium, of the systems; there was no evidence of other substances likely to cause corrosion having been present. Hl/BPS. [Signature] | ||