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).
Plan for adhesion tests on white metal for connecting rods.
| Identifier | ExFiles\Box 81\2\ scan0033 | |
| Date | 26th November 1918 | |
| EH. from BY/RB.{R. Bowen} c. Mr Coverley. c. Mr Hall. c. EFC. X.3415. RE WHITE METAL TESTS. Owing to the trouble we have been having to get white metal to adhere properly to the connecting rods, it is thought advisable that we should carry out some definite adhesion tests on white metal. We attach herewith one print XR.81, shewing the idea by which we may white metal two plates together and pull the two apart in our testing machine. This consists of a pair of plates which screw on to a pair of plugs, the latter screw into the testing machine jaws. Will you kindly produce three screw plugs and two pairs of plates out of mild steel. It is intended to cut various grooves in the face of the plates and to get comparative results of adhesion of different types of grooves and also with different types of fluxes and tinning compounds. As a basis it is thought that a plain surface should be tried first and grooves added afterwards to Mr Hall's recommendations. It should be noted that inrunning in the white metal between the two plates, the ring of mild steel sheet has been sketched up. In order to keep the two plates in line they should both be screwed tight up together on one plug - it is for this reason the one spare plug is required. BY/RB.{R. Bowen} | ||