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).
Methods for cleaning and preventing corrosion in radiators.
| Identifier | ExFiles\Box 27a\3\ Scan037 | |
| Date | 13th August 1929 | |
| X1066 c to Wor.{Arthur Wormald - General Works Manager} c to Hs{Lord Ernest Hives - Chair}: H14/EA13.8.29. Laboratory. Re Blocking of Radiators. A comparison of methods of cleaning radiators when they become blocked or dirty, indicate that a very weak solution of phosphoric acid is the most efficient. The solution need not be boiling and the time occupied is short. A subsequent wash with very dilute caustic soda is desirable, since this neutralises any trace of acid that might be left. Any sodium phosphate produced by the combination of the phosphoric acid and caustic soda is an advantage rather than a disadvantage, since it has a very marked corrosion retarding effect. Should the radiator be minutely alkaline after the above treatments it would not be a disadvantage from the corrosion standpoint. We understand that radiators will be cleansed after removal from the chassis, though the above treatment would probably be possible without removal (further tests are being made to confirm this.) A considerable no. of tests are being made with a view to discovering the best method of diminution of corrosion in new radiators. We hope to make a report in 2 or 3 days including work relating to By2/G.8.8.29. Hl. Hc. | ||