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).
The process for calorizing pipes, considering the melting point of the brazing spelter used for joints.
| Identifier | ExFiles\Box 54\4\ Scan006 | |
| Date | 25th March 1925 | |
| 44635 E.{Mr Elliott - Chief Engineer} Dept. c. Roy.{Sir Henry Royce} c. Hs.{Lord Ernest Hives - Chair} BY9/H.{Arthur M. Hanbury - Head Complaints} 25.3.25. Further to BY8/H.24.3.25. in looking over the details of the pipes I find that certain flanges etc. are secured to the pipes by brazing. Before I can definitely issue the pipes for Calorizing, it will be necessary for us to find out from the people who do the work in question, at what temperature the pipes are Calorized. Is it so high as to melt the brazing? The brazing spelter will have a melting temperature of approximately 750ºC. If the temperature used during the Calorizing process is 800ºC or above, it will be necessary for us to reconsider our methods, so that we would send away the pipes in pieces, and braze the flanges and other pieces on after they are returned. Suitable care will have to be taken by the people who do the Calorizing, to protect the parts where we would later desire to make the brazed joints. BY.{R.W. Bailey - Chief Engineer} By | ||