I need to make and harden some small sleeves, OD about 1/4", ID about 3/16", length about
1/2". I'd like the parts to be hard enough to make a file skip on them, but not glass- hard.Given that the only heat treating equipment I have is a MAP and oxy/ace torch, what material would you recommend.
I've had good luck using drill rod stock in the past.
O-1 is relatively non-fussy and easy to torch harden. Test for transition temperature with a magnet, quench in light oil and temper in the kitchen oven at 375F. Or you can buy drill bushings all done for $5-6 each, though you may have to live with a slightly heavier wall.
CRS and Kasenite is an option if you have Kasenite on hand. Buying air hardening steel in 1/4" is likely cheaper and easier in this case though.
Wes
The bushing is machineable with carbide on a decent lathe. I've used drill bushings for other purposes over the years.
Wes
PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.