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 analysis of corrosion products from a badly corroded radiator.
| Identifier | ExFiles\Box 15\1\ Scan122 | |
| Date | 6th May 1929 | |
| HM{Capt. W. Hallam - Head Repairs}/NRC.{N. R. Chandler} c. to BY.{R.W. Bailey - Chief Engineer} Extract from- H15/EA6.5.29. Laboratory. Report No. L1501. Re Radiator Corrosion. We have analysed the sample of the corrosion products taken from the radiator which was badly corroded. The tubes of the radiator were in some cases so badly attacked that it was possible to push holes in them easily. The corrosion products collected in the top portion of the radiator and reduced the circulation of the water, which soon boiled. This corrosion is of a serious nature seeing that it has taken place after only four months service. The analysis is as follows :- Zinc ---------- 0.96 % Chlorine ------ Traces. Silica -------- -1.40 % Lime ---------- -9.12 % Magnesia ------ -1.24 % Iron Oxide ---- 11.68 % Alumina ------- 8.52 % Sulphates ----- Absent. Tin and lead in the metallic state from the solder, were also present. The unusual features of the analysis are the lime and alumina contents. The presence of the lime must be due to the addition at some time or other, of hard water, as neither soft water nor distilled water contains it in appreciable quantities. Incidentally the low chlorine content indicates that the water is free from contamination by sea water. We mention this because the car was used in and around Grimsby. Hl. | ||