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Machining stainless, lathe

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petro1head24/01/2020 03:19:19
742 forum posts
143 photos

I have been given some stainless round bar, about 16mm dia however i don't know what type it is, but would like to make use of it for a couple of jobs.

i would like some idea of what indexable cutting tip to use, cutting technique and feed rate please

Clive Hartland24/01/2020 07:21:52
2592 forum posts
40 photos

More than likely it will be 303 or 316. 316 iis the tougher one and you will need a sharp tool to cut it. the 303 is softer and much easier to machine. I use HSS tools and it works fine with a bit of coolant.

Clive Brown 124/01/2020 08:45:37
480 forum posts
18 photos

300 series stainless steels are non-magnetic, or virtually so, which allows for a simple test. They machine readily to a good finish but work-harden. Modest speeds but relatively high feed-rates and DOC avoid this. Also applies to drilling. Don't let the tool rub. For myself, I'd probably use HSS tool-bits, a sharp tool is needed.

Edited By Clive Brown 1 on 24/01/2020 08:48:38

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