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I'm trying to get some cycle time out of an aluminum casting. Currently they are using a facemill with PCD inserts to rough and finish the faces. I know I could save a lot of cycle time by switching to a Seco Square 6 facemill to rough the part and keep the PCD to finish but the concern is tool life of the carbide inserts. I have already been talking to Seco about doing a PVD coating on their aluminum inset but I'm not having any luck. My question is how much does the residual sand from the casting process play into the tool life on a polished carbide insert?
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