Best wheels for grinding stainless knife steels?

D

DukeHarley

Joined
Apr 11, 2014
Messages
644
I work at a machine shop and have use of everything they have but every time I try to surface grind any stainless like AEB-L or S35 it always ends up sucking up and grinding uneven. I'm using a small dry grinder with coolant attachment but no matter how well I dress the wheel and no matter how little of a pass I take it's always loading up by the time I make it across. One of the toolmakers here says we have the wrong type of wheels for doing what I want to do.

Any of you guys have a recommendation on the type of wheels that work best?

Jay
 
Ate you sharpening or shaping?

If shaping, a wheel grinder is the wrong tool. You want a belt grinder or a disc grinder.
 
Hahaha........yes Stacy it's a surface grinder for flattening my blades and getting them parallel. I'm very experienced with grinding die steels (D2 and A2) on a big wet grinder like I did at my previous shop but I work at a fixture shop now and all they have are small dry grinders and one dry style that has been modified for flood coolant. We generally only grind mild steel up to 01 but never any steels like the CPM steels.

I was recently grinding a .100" AEBL paring blank and it actually curled like .040". I was only taking a .001" pass and very small step overs but even well dressed wheels load up right away on me.

Thank you to both of you!

Don, I will order a few up tomorrow and give them a try.

Jay
 
Jay, I take .005" per pass with the above wheel. Run dry and rarely get a warp. I do flip the piece back and forth often and take the same amount off each side.
 
You want a coarse, open wheel and dress it coarse, I use an "I". I had trouble early on with overheating and warping and found that I was traversing too slow and glazing the wheel. Once the wheel glazes, you're done. I now traverse as fast as I can (manual machine) with up to .001" DOC and .100" stepover with no coolant. I use a belt for hogging material.

Bob
 
I went and ordered myself the exact same wheel as shown above. I'm waiting for it to get here. I think the wheel I was using was a white wheel and seemed very fine grit. Yes it was loaded/glazed before I even made it 1/2 way across the blade. Hopefully this new wheel will get me what I want.

Thank you guys!!!!!

Jay
 
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