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).
Technical memorandum discussing the production of heat-treatable carbon steel and carbon steel wire for springs.
| Identifier | ExFiles\Box 93\5\ scan0038 | |
| Date | 19th November 1936 guessed | |
| -2- (3) - Cont'd.{John DeLooze - Company Secretary} We have not had any recent experience of this class of material, but there seems no reason why a heat treatable Carbon Steel can not be produced providing again that the maximum stress does not exceed 70000 lbs. (4) CARBON STEEL WIRE HEAT TREATED IN THE COIL. As an alternative to No.3 above, it would appear possible to produce springs from a carbon steel wire of the same quality and composition as No.3, but heat treated in the coil i.e. before it is made into springs. This would be much more econimcal than heat treating coiled springs. Again the stress should be kept below 70000 lbs. We are in touch with Messrs. Fox, who are investigating the possibilities of heat treating in the coil and we are also making enquiries from Sweden to see if this type of wire is available on a production basis. BY/EM. | ||