Rolls-Royce Archives
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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).
Hand-drawn cross-section diagram of a chromium layer on cast iron before honing.

Identifier  ExFiles\Box 132\5\  scan0036
Date  25th January 1939 guessed
  
CHROMIUM
CAST IRON
Note ridge at top and taper at bottom.
Before Honing
  
  


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