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).
Letter from Ferodo Limited discussing the microstructure analysis of a badly scored Millenite drum lining sample.
| Identifier | ExFiles\Box 141\1\ scan0207 | |
| Date | 9th November 1936 | |
| 1180 All Communications to be addressed to the Company FERODO LIMITED TELEPHONE: 19 CHAPEL-EN-LE-FRITH (4 LINES) TELEGRAMS: FRICTION, PHONE, CHAPEL-EN-LE-FRITH. FERODO BRAKE & CLUTCH LININGS REGD. TRADE MARK CHAPEL-EN-LE-FRITH, STOCKPORT, ENGLAND. CODES: WESTERN UNION FIVE LETTER EDITION, BENTLEYS COMPLETE & 2ND PHRASE, MARCONI INTERNATIONAL, LIEBER'S CODE, LIEBER'S LATEST CODE, A.B.C. 5TH & 6TH EDITIONS. Depots:- LONDON 222, TOTTENHAM COURT RD W. 1. ABERDEEN 26, GUILD STREET. BELFAST 8, 10 & 12, MONTGOMERY ST BIRMINGHAM 198, CORPORATION ST BRIGHTON 84, QUEEN'S ROAD. BRISTOL 118, VICTORIA STREET. CARDIFF 39, CHARLES ST DUBLIN 120, UPPER ABBEY ST GLASGOW 70, WATERLOO ST LEEDS 25, BRAMLEY RD LIVERPOOL 1-3, BERRY STREET. MANCHESTER 32, CATHEDRAL ST NEWCASTLE-ON-TYNE WORSWICK CHAMBERS. 10, WORSWICK ST OFF PILGRIM ST 9th November, 1936 YOUR REF. OUR REF. JNL/KM File A.{Mr Adams} F.{Mr Friese} Martindale Esq., Messrs. Rolls Royce Ltd., Derby. Dear Mr. Martindale, I have now had an opportunity of examining the portion of Millenite drum lining, badly scored, which you sent to me. I can straight away tell you that this bears not the slightest resemblance in microstructure to the iron alloy we know as Millenite and is indeed a most extraordinary mixture of soft Ferrite in large patches. The difficulties of reproducing an ideal structure in an alloy cast iron are severe enough in a drum of appreciable dimensions but in a thin liner of this small section they must be nearly insuperable. It is unfortunate that S.5805 should be associated in any way with this metal liner because it is my considered opinion, judging from the microstructure, that any friction lining would cause its collapse in the manner shown by this sample. I think it would be very interesting for Mr. Hall to polish a section right across the working path and examine it at 1/8" intervals under the microscope and I should be interested to see if his opinion confirms mine. Yours truly, FERODO LIMITED J.Nongley Chief Chemist & Director. | ||