AboutWillie Cutit Expertise Types of Tools to use on machining applications.
Experience My expertise is in cutting tools. Present job is Senior Applications Engineer with a major Indexable tooling line which supports turning, milling, boring and drilling.
Education/Credentials Tool and Die trade, over 25 years in the industry
Question I'm milling pockets and trying to get maximum tool life on 465. I'm tired of salesmen selling me sandvik tools. Is there a relatively affordable carbide insert that would get a longer tool life than 10 to 15 minutes. (.036 depth of cut, 1950rpm,47ipm)
Answer Darryl,
It's tough to give you a black and white answer to milling questions as there are so many variables to deal with. You gave me the RPMS and IPM but not the diameter of the cutter, pitch of the cutter, lead angle of the cutter, overhang condition of the cutter, how the workpiece is being held and thickness of the workpiece. How do the inserts look? Are they chipped or a wear land on the corner? How does it sound? Any vibration or chatter? Custom 465 has some similar characteristic to 13-8 PH with a little more nickel (10 to 11%) and titanium. Would like to see the SFM in the neighborhood of 275 to 325 with a good PVD coated grade. A good starting LPT can be .005 to .006". Worked to get 25 to 30 mins of incut time on this material. Another funky thing about milling is that most inserts are proprietary to a given manufacture. (Example: Sandvik's 390 insert will not fit into Iscar's Endmill style or Kennametal's endmill style. Lastly, Every Carbide manufacture has good products, the key is the guy who can review your application and knows their products well enough to spec out a cutter for your job. It's a very competitive world in carbide. If Sandvik is not cutting it, Call in someone else. Their are a lot of people that want your business and will work hard to earn it. Write back with more info,
