Stainless Blades 2

[nornrich]

All,

I am looking for a Series of Stainless that will take and hold a cutting edge on material of about 0.01" - 0.017" of thickness. It will be coated with an anti-stick material after grinding the edge. Also any recommendations on what type of grinding would be best. Chemical vs. Mechanical?

Regards,

Rich.....

Richard Nornhold, PE

 

[unclesyd]

Here are some SS used for blades. You have to be careful with SS when you get to thin sections with a very fine edge due to some potential carbide problems. If the quantity warrants I would look to one of the following manufactureres.
As to grinding you can go either direction depending on the precision need, though both are very precise.
We used a twin disk machine to produce a sharp edge on a metal band blanks. To produce ultra precision edges we use a machine like a mechanical lap with different abrasive plates.

A material, not a SS but very tough, now being use on very small mechanical cutters on medical devices is Carpenter Aermet 100 produced by the Special Products Division of Carpenter in San Diego, California.

Checkout the following.

Ferrium M60S

http://www.questek.com/

440C Strip I would also look at 440C Modified, I have some data showing this material is considerably better that 440C currently used on a little heavier cutter than your requirements.

http://www.falcon-metals.com/UsefulInfo/ProductList.htm

BG42 and other SS Blade Materials

http://www.timken.com/products/spec...F_Files/air_melt/KnifeSteels/Knife Steels.pdf

Here are three companies that I have worked with in providing blades.

http://www.appliedcutting.com/strtkn.html

Check also the parent company of the following.

http://www.americancuttingedge.com/

http://www.personna.com/PageView.aspx?NavKey=153&MarketID=3&RegionID=6

 

[rnd2]

nornrich in addition to the information supplied by unclesyd. I strongly suggest you look at the Kolsterising process or one of its clones. Choose 316L or a duplex type stainless, but preferably a ss with plenty of chrome, and Mo. The process allows carbon to form carbide compounds with Fe and is discouraged to combine with Cr. Traditional hardening methods permit carbon to combine with Cr and render the metal no longer stainless. What you end up with is a seriously corrosion resistant ss with a 70+ Rockwell 'C' scale surface to a depth of 30 microns.
Downside: Use and when worn, throw away.

Fortune favours the bold and avoids the unprepared.

 

[EdStainless]

Please don't double post in multiple forums

= = = = = = = = = = = = = = = = = = = =
Corrosion, every where, all the time.
Manage it or it will manage you.

http://www.trent-tube.com/contact/Tech_Assist.cfm

 

[unclesyd]

EdStainless,
As I was about to post a reply, it was suggested by the other Forum owner that Richard post in another Forum and instead of a reply I suggested a couple of possibilities and he availed himself of this particular Forum to post his query. That is the reason for the double post.

 

[whizzz]

In some cases, this ceramic coating is the most popular solution for the cast iron as we used now. in my point of view, abrasive ceramics are commonly used to wear, grind or cut away other material which necessarily is softer.