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Plasma Spraying

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  • #31713

    Tierradentro
    Participant

    I am a BB in the Aerospace industry working with a supplier who carries out tungsten coating via plasma spraying during refurbishment of my company’s components. We are experiencing a great deal of re-work/srappage by the supplier. Has anyone worked on a similar project?
     

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    #83834

    Charles H
    Participant

    John,
    Are you using APS or VPS/LPPS?  What are the failure modes requiring material rework / scrap?
    Charles H

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    #83962

    Tierradentro
    Participant

    Charles,
    Thanks for your reply to my post. The scrappage is occurring in the grinding operation where they remove the old coating in preparation for spraying. Have you come across this?
    John
     

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    #83982

    Charles H
    Participant

    John,
    As you know, there are many variables associated with this process.  From your reply, I assume that the scrap is due to overgrind of the base material.  Is this true?  What kind of tolerances are we dealing with?  What is the base / substrate material you are coating?  Aluminum, steel . . .?  What other means of coating removal has the supplier tried, if any?  Is the process of coating removal manual or autonomated?  Is the part configuration simple or complex? Of the parts you receive that are not scrapped, does the coating adhere properly and evenly.  Are there any coating issues that result from poor surface preparation by the supplier?
    We may find this easier to go through our emails on this one.  If you agree, email me at: [email protected] and we can get into this in greater detail.
    Best always,
    Charles H.

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