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Change TAC and VOC manually

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6 comments

  • GNT TECH Taiwan

    Hi Joakim,

    This is Bryant from GNT Tech Taiwan.

    Thank you for such a clear description.

    So, basically we have a waterjet machine, and we want to use TAP to overcome the tapper.

    I have done the way you described above before. Could you please tell me more about the cutting speed measurement before we cut the part for the VOC measurement?

    The way I did was doing a manual cutting with fix speed to get the number for machineability.

    Somehow, the judgement of the speed might be various.

    Do I just use the speed it cuts thorugh? Or not cutting through? Or almost cutting through?

     

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  • Joakim Johansson

    Hi Bryant,

    You should use a speed so that the jet doesn't cut through. But I usually just set a machinability value based on other materials. If you click on the "?" to the right of the Machinability value you will see a list of materials and their values. 

    Approximate a value between two other materials and cut a test part, then change the value accordingly if you want a faster or slower cut.

    This method is often faster and gives you more understanding of the material.

    Joakim

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  • GNT TECH Taiwan

    Hi Joakim,

    That's nice.Let's start a scenario!

    So, when I am cutting some "usual material" or let's define it as common material like steel, alumium, or stainless steel.

    There are some recommond machineability on the list as you said:

    304 stainless steel.... 81.9

    mild steel ....87.6

    For now, I will have to cut carbonfiber, which is different selection from those metal material.

    What kind of number would you go for?

    Bryant

     

     

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  • Joakim Johansson

    Unfortunately I don't have any experience cutting carbon fiber. Maybe somewhere around 400? If you don't want to waste material, go with a lower machinability value and work your way up.

    Joakim

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  • GNT TECH Taiwan

    Thank you Joakim! You have been extremelly helpful.

    I am not trying to get any data from you but the thought.

    The way you told me is helping me to determine if I am on the right track.

    I do understand material can be differnt in different counrties, and it will make the machineablilty vary.Eventhough there are some good data in Igems, I still have to test for the best outcome.

    These are the photos of titanium I cut based on the parameter in database.

     

    Bryant

     

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  • Joakim Johansson

    Thank you Bryant!

    Please use the community in the future for questions.

    Good luck with the carbon fiber.
    Joakim

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