Casting under pressure

Battara · 8th October 2006, 09:29 PM

The use of pressure in casting is essential for proper casting and as has been mentioned, very ancient. However, the amount of pressure equalling what we can do today is in serious doubt. Not only is the capability of technology at the time an issue, but in come cases one would not want to have steel solid bronze. Not only would it be ridiculously heavy, but the ability to expand when firing off a cannon shot could be compromised. Also, in brass and bronze mounts, one would want the softness to be such that one could easily chase or stamp designs into it.

Jens Nordlunde · 9th October 2006, 04:43 PM

Thank you for your explanations, The way I understood the article was, that the bigger pressure the smaller ‘grains’, and the smaller ‘grains’ made the metal harder. If you tried this on steel, would it work the same way?

8th October 2006, 09:29 PM	#1
Battara EAAF Staff Join Date: Dec 2004 Location: Louisville, KY Posts: 7,273	The use of pressure in casting is essential for proper casting and as has been mentioned, very ancient. However, the amount of pressure equalling what we can do today is in serious doubt. Not only is the capability of technology at the time an issue, but in come cases one would not want to have steel solid bronze. Not only would it be ridiculously heavy, but the ability to expand when firing off a cannon shot could be compromised. Also, in brass and bronze mounts, one would want the softness to be such that one could easily chase or stamp designs into it.

9th October 2006, 04:43 PM	#2
Jens Nordlunde Member Join Date: Dec 2004 Location: Europe Posts: 2,718	Thank you for your explanations, The way I understood the article was, that the bigger pressure the smaller ‘grains’, and the smaller ‘grains’ made the metal harder. If you tried this on steel, would it work the same way?