BS3100 A1
BS3100 A1
(OP)
I am currently making castings in BS3100 A1 material, more often than not the castings I have made previously are full of gas holes. Can anyone suggest why this may be? Where can I find typical melting temperatures for this material grade?





RE: BS3100 A1
RE: BS3100 A1
_____________________________________
"It's better to die standing than live your whole life on the knees" by Peter Mayle in his book A Good Year
RE: BS3100 A1
You definitely want to use clean charge material, too much revert into the charge is asking for trouble, especially material that has been cycled several times. It reaches a point where it is "dead" metal and remelting it without AOD or vacuum degas is pointless. A charge of carbon steel plate and 30% revert shouldn't be a problem, deoxidize with Al, keep it <0.07% or use Ti, can be done in the ladle. Use a fixed amount of Al or Ti per ladle and fill the ladle to the same level every time if pouring multiple ladles from a heat. Make up any additions of C, Mn & Si that you need before deox. Mn and Si will also help with deox. If you are induction melting keep in mind that there is very little refining going on in the furnace, so garbage in, worse garbage out. Pouring temp should probably be around 2900f.
RE: BS3100 A1
I realized the error,regarding temperatures. 1625 C is a good temperature in my experience. But then I assumed maybe you were referencing some high carbon alloys
Rest all other comments, I agree with you.
_____________________________________
"It's better to die standing than live your whole life on the knees" by Peter Mayle in his book A Good Year
RE: BS3100 A1