- Joined
- Aug 25, 2013
- Messages
- 1,220
Hello everyone 
From some time I was wondering, about to start making kitchen knives.
And from some time working on santoku type knife.
Steel: NCV1 2,5mm ( ~80CrV2)
HT: 650*C 2h stress reliewing -> 820*C 15min. Austenizing -> cooling in Canola Oil 160*C hot (step hardening) for 1 minute to equal temp of knife and oil.
Tempering for 2h in 175*C (probably).
Why 160*C hot Oil?
To have some austenite still in a knife after taking of from oil, this giving me option to make knife straight in hands and then put knife between 50*C hot plates
Blanks was not so straight ( sheet of steel with waves...)
Also with this knife I hardened Usuba and Petty knife.
For now only Santoku is in state of epoxied handles, today finishing this knife
Later I will get to work on Usuba and Petty.
And epoxy is setting with Brown Mahogany and brass pins.
And by this time I done similar HT for 4 Tengu-C knives
Btw. Started making Tengu-C and Garmr from 2,5mm ELMAX
Later when I change hardware of the kiln, and buy 309 SS tool Wrap, Probably I get 2,5mm AEB-L steel for kitchen knives , or maybe also from ELMAX / M390.
From some time I was wondering, about to start making kitchen knives.
And from some time working on santoku type knife.
Steel: NCV1 2,5mm ( ~80CrV2)
HT: 650*C 2h stress reliewing -> 820*C 15min. Austenizing -> cooling in Canola Oil 160*C hot (step hardening) for 1 minute to equal temp of knife and oil.
Tempering for 2h in 175*C (probably).
Why 160*C hot Oil?
To have some austenite still in a knife after taking of from oil, this giving me option to make knife straight in hands and then put knife between 50*C hot plates
Blanks was not so straight ( sheet of steel with waves...)
Also with this knife I hardened Usuba and Petty knife.
For now only Santoku is in state of epoxied handles, today finishing this knife
Later I will get to work on Usuba and Petty.
And epoxy is setting with Brown Mahogany and brass pins.
And by this time I done similar HT for 4 Tengu-C knives
Btw. Started making Tengu-C and Garmr from 2,5mm ELMAX
Later when I change hardware of the kiln, and buy 309 SS tool Wrap, Probably I get 2,5mm AEB-L steel for kitchen knives , or maybe also from ELMAX / M390.
