Turning hardened forged steel with CNC Lathe (OP 1)
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This video is a response to Introduction - Centering the 3-Jaw Chuck - Episode 1
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All Comments (29)
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Is he making wigs?
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Its coming off hot. Keep a hose on it
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I've seen this done with a piece of broken spark plug
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Awesome video. Thanks for posting.
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200 brinnel is not hard at all. Thats about 15 Rockwell C. I cut 600 brinnel plate all the time at work. 57 Rockwell. To me you should not be getting red chips like that on 200 brinnel. Your feed is too slow or speed too fast.
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we use ceramic button tool. 350 ft/min. .010 feed. up to .3 of .4 depth of cut. we use coolant.
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Ceramic inserts are awesome, but I wonder about the heat warping the material?
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yeah... glowing confetty!!! it pretty amazing to see a cnc in real like that...
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@redramage lol, make a vid of that pls XD
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The glowing "ribbons" are normal for hard turning.
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VERY interesting indeed! what hardness IS this steel, rockwell scale/#? I need to make some small MIG welder feed rolls, and my buddy has a 'pretty stout' lathe...turning 'already hard' stuff would be a BIG plus...
*thanks* for posting this :-)
hardwares1 2 years ago
Not sure about Rockwell. Bit it was between 160 and 200 Brinell
buggable 2 years ago
I could be wrong but you are turning way too fast dia looks like about 6 inch and your feed looks very slow
but good job man keep it up
ranjha1970 3 years ago
No, the cutting speed was between 330 (interrupted cut) and 430 ft/min. Feedrate was between 0.003 and 0.004 inch/rev. The diameter of the part was about 7 1/2 inches.
We didn't have much trouble turning those parts. We just had to tell everybody in the shop who came over to tell us something is wrong that we did not forget to turn on the coolant and the glowing chips are just fine ;-)
buggable 3 years ago