The Encyclopedia Americana: A Library of Universal Knowledge ...Encyclopedia Americana Corporation, 1924 |
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Stran 427
... cent aluminum to cast- ings of iron will cause the metal to flow more leisurely and take on a closer grain . In steel castings the proportion of aluminum commonly used is minute , about 1 / 50th to 1 / 30th of 1 per cent , although for ...
... cent aluminum to cast- ings of iron will cause the metal to flow more leisurely and take on a closer grain . In steel castings the proportion of aluminum commonly used is minute , about 1 / 50th to 1 / 30th of 1 per cent , although for ...
Stran 455
... cent of clean steel punchings or rivets to the thermit to modify the intensity of the reaction . A further addition of 1 per cent of metallic manganese and 1 per cent of nickel thermit will improve the quality of the casting . In the ...
... cent of clean steel punchings or rivets to the thermit to modify the intensity of the reaction . A further addition of 1 per cent of metallic manganese and 1 per cent of nickel thermit will improve the quality of the casting . In the ...
Stran 457
... cent and renders the iron more fluid at 2200 ° F. than at 3500 ° without it . With 2 to 10 per cent of magnesium , aluminum forms an alloy lighter even than its normal weight . This alloy goes by the name of mag- nalium and is equal in ...
... cent and renders the iron more fluid at 2200 ° F. than at 3500 ° without it . With 2 to 10 per cent of magnesium , aluminum forms an alloy lighter even than its normal weight . This alloy goes by the name of mag- nalium and is equal in ...
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