View Single Post
Old 08-17-2009, 07:17 PM
restapukin restapukin is offline
Motorized Bicycle Elite Member
Join Date: Jul 2009
Location: australia
Posts: 112
Default Re: Art of the Ninja!

yeah - this is called 'case hardening'

1 plunge your piece of red-hot lower-carbon-content steel into the case-hardening compound

2 reheat the bizzo back to red-hot

3 clean the cooled work

4 harden the piece 'right out' with a red-hot plunge into cold water or brine

5 temper to desired hardness -

nah... a bike frame is a bit big, and the tubing, if heat treated already (likely) will have its strength/springyness changed, most likely for the worse...

his mark
Reply With Quote