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  1. niamu

    Machining problems with special cast iron

    Hi,we are machining a special Cast Iron,GGL(Mn 0.50-1% and P 0.35-0.7%), 100% perlite and we cut at 100m/min.The problem is that we can't achieve de finish surface Rt8. The micoestructure is ok and our supplier has told me that he hasn't make any heat treatment to the parts but maybe if we do a...

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