How to avoid Ferrit??

hello,
im casting pig iron with high amount of phosphor ( about 3 percent) and i
get 40- 50 percent Ferrit.
by 1,5 percent phosphor i dont have such problem ( 8-10 percent ferrit)
does anybody have an idea what i can change
the time from casting to unpacking is about 1 hour
Reply to
sebastian
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