Machining Hastelloy

[freudianfloyd]

Does anybody have experience machining Hastelloy C-22? I have to make the part in the attached drawing. Machining the outside shape isn't a problem, but parting it at the .040" is proving tricky. I have tried using a slitting saw, but it wore it out pretty quick. The saw was HSS, which I am sure isn't the best material to use, but it was all I had. Anybody have any ideas on how to make this cut? I have looked into wire EDM but the cost was pretty high.

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Thanks

 

[atthebeach]

Hastelloy C-22 can be difficult. A carbide slitting saw is your best approach. Below is a link to a supplier who offers slitting saws thin enough for your application.

http://www.damencarbide.com/Standar...rbide+Slotting+and+Slitting+Saws/default.aspx

 

[freudianfloyd]

Hastelloy C-22 can be difficult. A carbide slitting saw is your best approach. Below is a link to a supplier who offers slitting saws thin enough for your application.

http://www.damencarbide.com/Standar...rbide+Slotting+and+Slitting+Saws/default.aspx

Thank you. I was hoping that somebody had some experience with this material.

 

[Jim Pelosi]

My shop usually grinds slits like that in titanium and hastalloy. Ceramic tooling is also good for turning hast.

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[freudianfloyd]

My shop usually grinds slits like that in titanium and hastalloy. Ceramic tooling is also good for turning hast.

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How do you mean grind the slits? Do you use a mill with a special type of grinding wheel or something completely different? Please excuse my ignorance.

 

[pxtyson]

I do this all the time with a fiber cut off disc on a surface grinder. Simple to do.