Cast Copper 1-3% Chrome alloy
Cast Copper 1-3% Chrome alloy
(OP)
Appararantly this alloy is difficult to cast without introducing defects. I suppose these would be gas or shrinkage or possibly dross defects. Has anybody got any experience in casting this alloy and have any tips as to how a good casting can be produced?
Thank you
Clive Jones
Thank you
Clive Jones





RE: Cast Copper 1-3% Chrome alloy
maybe relocate the vent holes and degassing/deoxidizing may help to reduce the porousity or blow holes...
Relocating/redesign the risers or adding hot pads may also work for shrinkage...
What are you trying to cast anyway?
all the best to you..
RE: Cast Copper 1-3% Chrome alloy
The castings are to be sand cast (with a large CO2 core). The product is a pressure ring cast in green sand (currently AB1 Al Bronze). It weights about 180kgs and is water cooled, it is used to push copper contact shoes on to a carbon electrode in a chrome smelter. Therefore it has to be pressure tight, conduct the furnace heat away and be mechanically strong enough to support a reasonable force.
Regards
Clive
RE: Cast Copper 1-3% Chrome alloy
If you have any more concerns please feel free to ask.