Topher Posted September 20, 2011 Share Posted September 20, 2011 What type of sand is used to cast bronze, brass, steel and aluminium? also what are their shrinkage rates and melting points? Link to comment Share on other sites More sharing options...
Newbies_Kid Posted September 21, 2011 Share Posted September 21, 2011 What melting points? the sand or the metals? Link to comment Share on other sites More sharing options...
Topher Posted September 21, 2011 Author Share Posted September 21, 2011 The metals, I'm more having difficulty with finding the sand compositions. Link to comment Share on other sites More sharing options...
Enthalpy Posted September 21, 2011 Share Posted September 21, 2011 You already read this, I suppose? http://en.wikipedia.org/wiki/Sand_casting they give an example of sand composition. From a friend's experience, an important condition is to dry completely the sand mould before pouring the liquid metal. After few seconds on Google, I've seen many pages giving such information. Link to comment Share on other sites More sharing options...
Hal. Posted September 21, 2011 Share Posted September 21, 2011 (edited) Aluminium melts at approximately 660 degrees Celsius , Brass has many compositions some of which melt between 900 - 940 degrees Celsius , Bronze likewise has it's different varieties and one of them melts at 950 degrees Celsius approximately , Steel is a term for many Iron alloys and a Cast Iron alloy for reference melts at approximately 1260 degrees Celsius . Do you want to melt some metal and pour a casting ? Edit : A capital C for Celsius . Edited September 21, 2011 by Hal. Link to comment Share on other sites More sharing options...
John Cuthber Posted September 21, 2011 Share Posted September 21, 2011 I know that Ethalpy said this, but I'm repeating it. Dry sand can be used as a mould for any of those metals. Slightly dap sand can be used to spray molten metal about the place and give you a nasty, or even fatal set of burns. Link to comment Share on other sites More sharing options...
Topher Posted September 23, 2011 Author Share Posted September 23, 2011 This is for an assignment, I have all the information I need now except for shrinkage rates, thank you everyone who's replied. Link to comment Share on other sites More sharing options...
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