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).
Merits of Cosletizing versus Sherardizing for rust-proofing aero-engine cylinders and cylinder jackets.
| Identifier | ExFiles\Box 38\6\ Scan090 | |
| Date | 9th February 1926 | |
| 13388 HYS O.{Mr Oldham} wer. C. c. Hs.{Lord Ernest Hives - Chair} EYS/H.{Arthur M. Hanbury - Head Complaints} 9.2.26. ---------------------- PROTECTION OF CYLINDERS AND CYLINDER JACKETS AGAINST RUST. ------------------------------------------------------ As a result of a number of experiments we have had in hand in this direction, it would appear that the best way of protecting the water jacket and cylinder barrel of an aero engine against rust is by treating same under the Cosletizing process. Sherardizing, in common with the number of other experiments we have had in hand, does not seem to be nearly as effective when dealing with parts which are constantly under water, and the water is warm and likely to get slightly acid. Would you kindly look into the question of what arrangements can be made to treat cylinders with cylinder jackets welded on, with this process at our own works, as it would be impracticable to send cylinders away and await same being treated and, returned. The time lost on the road would be a very serious item. BY.{R.W. Bailey - Chief Engineer} JH | ||