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hello there, i have problems. when we poured high chr. white cast iron in molds, metal melt has boiled in sprue. we tried degassing technique with Al turnings, but more didnt not work. a lot of gas porosity,and shrinkage too. we cast high. white cast iron aprrox. 1500 celcius degree and...

thank you for advice

yes air quenching

@EdStainless yes we apply heat treatment process but we have old heat treatment furnace. flame furnace we heat treat 280 minutes in 865-875 C for 11- 13 Cr balls. and also 350 minutes in 975-985 C for 17-19 Cr balls time and temperature depends on ball diameter.

we used pig iron for vitalization of melt when furnace waited for a long time.(nucleation)(grey-ductile iron) we manufacture 17-19 Cr abrasive balls I mean using 100% returns are impossible in production of 17-19 Cr ? i wanna produce with %100 returns. is there any method for apply this...

I m a material engineer and work in a foundry. we produce high chromium white cast iron abrasive balls. we cannot use %100 returns in smelting due to inhibition of starting nucleation. But we use pig iron for starting nucleation grey-ductile iron smelting. i want to produce high chr white...