03-22-2015, 01:46 PM
Thank you for sharing that with us. Now having seen that I can say that for your light finish cuts of 0.2mm or less, try jumping up to the 1120 rpm range, use climb milling paths and bump up your feed rate commensurately.
No reason to dawdle along. It'll take it!
The results you show are exactly what I would expect, and believe I may have predicted. The Walter grade WKP25S for milling tougher steels (and cast iron!) has always impressed me. You do have to be cautious because it can be brittle, but when you do it right the reward is the extraordinary productivity and dramatically lower cost per part. Yes, it is a VERY expensive cutter (far more than cheap Asian imports) and Walter is very proud of the inserts, but when you see those kind of process improvements and confidence is built, the cost quickly turns into "look how much that tooling pays me."
BTW, how does the sound of it working compare to the previous cutter? Machining tells us as much (if not more) about how good or bad the cutting conditions are than the visual does. If it sounds good, it probably is good. If it sounds like crap, it almost ALWAYS is.
No reason to dawdle along. It'll take it!
The results you show are exactly what I would expect, and believe I may have predicted. The Walter grade WKP25S for milling tougher steels (and cast iron!) has always impressed me. You do have to be cautious because it can be brittle, but when you do it right the reward is the extraordinary productivity and dramatically lower cost per part. Yes, it is a VERY expensive cutter (far more than cheap Asian imports) and Walter is very proud of the inserts, but when you see those kind of process improvements and confidence is built, the cost quickly turns into "look how much that tooling pays me."
BTW, how does the sound of it working compare to the previous cutter? Machining tells us as much (if not more) about how good or bad the cutting conditions are than the visual does. If it sounds good, it probably is good. If it sounds like crap, it almost ALWAYS is.