Shop Doc Forum » Cutting Tools

1. Anonymous
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   We are haveing a difficult time holding tolerances (.005mm) because the material hardness is so inconsistent, even within the slug. Any suggestions?

   Posted 2 years ago #

2. Anonymous
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   I would be able to help if you could give lots more info about this application.

   Posted 2 years ago #

3. Anonymous
   Unregistered

   What type on machining are you doing? Turning, milling,grinding?

   Posted 2 years ago #

4. Anonymous
   Unregistered

   The article is named "Precision turning 4140H" you say "the slug" wich all implies a turning opperation. In what make and type of machine is not listed nor is the type of tooling or coolant If any.
   I would turn the slug with a carbide insert tool and leave a finishing pass if you have the extra material. This material can work harden and change from 25RC to 65Rc in the wrong conditions. If you could tell us more of what you want to do, and what you have to do it with, we can help more.

   Good Luck!

   Posted 2 years ago #

5. Anonymous
   Unregistered

   Can you anneal the material?

   Posted 2 years ago #

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