Heat treating saw blade made of M2, or M4
Heat treating saw blade made of M2, or M4
(OP)
We are trying to work with a potential customer who would like us to wire cut some saw blades out of M2 or M4. They would like the body of the blade to be a hardness of 44 to 52 on the Rockwell C scale, and the cutting edge or teeth to have a hardness of 62 to 65 on the Rockwell C scale.
Does anyone have experience in induction hardening to this type of requirement??
Does anyone have experience in induction hardening to this type of requirement??





RE: Heat treating saw blade made of M2, or M4
instead of selectively hardening and tempering the edge, you could possibly consider to retemper to the lower hardness range the remaining portion of the blade (after it has been heat treated in full to the higher range). This can be done by preventing the edges to heat up by means of suitable chills.
Laser heat treatment also could probably provide acceptable results.
http://www.welding-advisers.com/
RE: Heat treating saw blade made of M2, or M4
The cutting creates aheat effected zone at the edge of the cut that has to be considered.
If it is carbide, ceramic or diamond tipped then the brazing will alter the metal again.
Often the saw blades are annealed after brazing.
You might conider getting quotes and subbing this out.
Peerless in Groveport Ohio and Western Saw (Steve Bergerson 503 781-5013) are both very good.
RE: Heat treating saw blade made of M2, or M4
Maui
RE: Heat treating saw blade made of M2, or M4
RE: Heat treating saw blade made of M2, or M4
Welded edge blades are the stock answer to this problem. They're usually welded using electron beam welding, but laser would probably do too.