04-27-2017, 05:29 PM
All I could ask for is something tangible, like a micrograph.
I hear all sorts of opinions, never heard of any evidence.
As someone who's been using diamond plates for many decades, they've always worked well for me.
Many people would say that diamond plates are the only thing that works with such abrasion resistant steel. I would definitely be leaning in that direction.
In actuality, the only things harder than a vanadium carbide are CBN and diamonds, so it's more reasonable to say that you Better be using diamonds if you expect to affect the carbides. Otherwise you're just kind of polishing them.
Now that we have come to some conclusions regarding tooth in relation to grit, we find that 400 grit is pretty fine. Keep that in mind.
Vanadium carbides are generally recognized as the smallest carbides. I've read that they are 2-4um in modern powdered steel like S35VN.
If the carbides are 2-4um, and you have a 400 grit scratch pattern, one scratch would be 10-20 vanadium carbides DEEP (400 grit happens to be about 40um).
It's difficult for me to fathom how completely irrelevant a 2-4um "hole", from tear out or chip, would appear on a 400 grit scratch pattern.
The thing that I really don't understand is why I never see micrographs that show what micro-chipping or carbide tear out actually Looks like!
Mr. Rupert, I don't believe you've been missing Anything.
I hear all sorts of opinions, never heard of any evidence.
As someone who's been using diamond plates for many decades, they've always worked well for me.
Many people would say that diamond plates are the only thing that works with such abrasion resistant steel. I would definitely be leaning in that direction.
In actuality, the only things harder than a vanadium carbide are CBN and diamonds, so it's more reasonable to say that you Better be using diamonds if you expect to affect the carbides. Otherwise you're just kind of polishing them.
Now that we have come to some conclusions regarding tooth in relation to grit, we find that 400 grit is pretty fine. Keep that in mind.
Vanadium carbides are generally recognized as the smallest carbides. I've read that they are 2-4um in modern powdered steel like S35VN.
If the carbides are 2-4um, and you have a 400 grit scratch pattern, one scratch would be 10-20 vanadium carbides DEEP (400 grit happens to be about 40um).
It's difficult for me to fathom how completely irrelevant a 2-4um "hole", from tear out or chip, would appear on a 400 grit scratch pattern.
The thing that I really don't understand is why I never see micrographs that show what micro-chipping or carbide tear out actually Looks like!
Mr. Rupert, I don't believe you've been missing Anything.