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).
List of questions and comments regarding iron foundry practices for cylinder blocks, referencing Buick and Oldsmobile methods.
Identifier | ExFiles\Box 142\1\ scan0202 | |
Date | 1st September 1938 | |
Rm.{William Robotham - Chief Engineer} RHC{R. H. Coverley - Production Engineer}/Vs.{J. Vickers}1/JT.1.9..38. Iron Foundry. The following is a list of the information we would very much appreciate having from Buick's. U.S.A. They are gathered as a result of careful investigation of the Buick cores which we have here in the Foundry. 1. Are Oldsmobile Cylinder Blocks cast bores horizontal, and if so would it be possible to obtain a print of the gating system, and moulding boxes? 2. What stress releasing treatment is given to Cylinder Blocks to counteract the effect of shaking out 20 to 25 mins after casting? 3. What is the gum or paste used for sticking together the two halves of the Buick 8 in-line jacket core which we have? You might say that we thoroughly agree with the bulk of Buick foundry technique, and have applied it here as far as possible during the last 12 months. Regarding Buick cylinder block material, our practice is in line with theirs excepting for the fact that against their .25% Nickel we run 1.0%, with a corresponding reduction in our Silicon content to give us the required Brinell Hardness. They also run a .30% Chromium which has already been the subject of our recommendation to you in the bore wear tests now in operation, RHC{R. H. Coverley - Production Engineer}/Vs.{J. Vickers} [Signature] | ||