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Thread: Plasma Booth @ Work

  1. #1
    Zzzzzzz sleepyhead's Avatar
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    Plasma Booth @ Work

    After alot of grief and time, our plasma booth is operational.

    Here is a short video for anyone interested of the robot in action. It's nothing exciting as the application was on an HPT Aft Shaft which is quite a small component; I'll see if we can grab some more if people are interested.

    Plasma Application

    Test run with no flame, gas or powder
    Last edited by sleepyhead; 04-03-2009 at 03:46 PM.

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    Does he need a reason? Funkstar's Avatar
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    Re: Plasma Booth @ Work

    And here was me thinking it was all the about the TVs

    That looks cool! Any chance of a before and after shot so we can see that the plasma is doing to the component?

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    Zzzzzzz sleepyhead's Avatar
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    Re: Plasma Booth @ Work

    Lol..TVs...yeah the title is misleading.

    I'll see what is on queue for plasma - at the moment our cleaning line is down (or more accurately the nitric acid tank) for maintenance. I'd like to get video of a big component getting sprayed...I'll ask our Plasma technician if he can take pictures and video

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    Re: Plasma Booth @ Work

    That would be cool.

    I like stuff like this

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    Mostly Me Lucio's Avatar
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    Re: Plasma Booth @ Work

    What's it actually used for? Cutting? cleaning? something else??

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    Zzzzzzz sleepyhead's Avatar
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    Re: Plasma Booth @ Work

    Quote Originally Posted by Lucio View Post
    What's it actually used for? Cutting? cleaning? something else??
    The video is of application of a metal (nickel-aluminium powder) onto another metallic item (the HPT Aft Shaft). It is to provide the component with an abradable cutting teeth that cuts into the graphite coating on the mating surface of the component that sits over it (HPT Cooling and Vent Seal).

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    Re: Plasma Booth @ Work


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    Re: Plasma Booth @ Work

    Quote Originally Posted by Funkstar View Post
    Not quite Funkstar; the part in question (in the video) required a bond coat applied for adhesion. I'll inquisition one of the senior repair technicians about it. The wikipedia link is probably the process for how items such as the Pressure Tube Adapter and HPT Coupling Nut get silver plated.

    I'll get back to you with more information after our lunch break (as long as the repair guys don't run off out for lunch).

    Funkstar: OK, our booth does 3 types of plasma process. One is with argon and (i forget the other gas) gas and this forms a plasma gas, one is oxy acetylene (at higher velocities) and the other is HVOF. What you see in the video is the first process.

    EDIT: I updated the first post with a link to the test run before any powder, gas or flame was used.
    Last edited by sleepyhead; 04-03-2009 at 04:08 PM. Reason: Additional info :) Correcting myself

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    Senior Amoeba iranu's Avatar
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    Re: Plasma Booth @ Work

    It's this http://en.wikipedia.org/wiki/Plasma_Spray.

    HVOF - is high velocity oxyfuel (spraying or coating). They are all processes for applying coatings to parts for different reasons such as

    wear resistance (abradable), prevent corrosion, bond coats (a bit like a primer in painting) for thermal barrier coatings which are used on the surface to protect from heat, anti-fretting to stop parts binding etc.
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