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How to make these parts more chemically and wear resistant


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Posted · How to make these parts more chemically and wear resistant

Any ideas on how to make these parts last longer? They are used a guide fixture that a rubber extrusion then slides across as a promoting agent is applied with a felt tip. The force applied is only about 2-3 pounds max but these are about 1200 parts being pulled through a day. I typically have to replace these every month. I have tried ulimaker brand CPE (in yellow) and CPE+ (white). I have also tried a filament by igus which claims to have 50x the wear resistance of nylon and abs but it was unable to withstand the chemicals in the primer and ended up deteriorating even faster. 

 

Is there any thing else I can try beyond adding metal inserts or cutting them out of aluminum entirely? I already have the local infill areas set up to 100%. 

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    Posted · How to make these parts more chemically and wear resistant

    Would PVDF be an option?

    I was about to try it for a demanding application but never got there so cant tell how good it is.

     

    Supposed to have excellent chemical and wear resistance but I have not compared properties with CPE

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    Posted · How to make these parts more chemically and wear resistant
    11 hours ago, AndersK said:

    Would PVDF be an option?

    Interesting! All the reviews suggest this could be just what I need. I wish it wasn't so expensive though! 

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    • 1 month later...
    Posted · How to make these parts more chemically and wear resistant

    Like @AndersK said PVDF. Or a non-fluorinated version like PP might do the trick. It really depends on what kind of chemical agents are being used - please check this one where we put some common chemicals vs materials in a table:
    https://ultimaker.com/learn/chemical-resistant-materials-a-beginners-guide

     

    Other options could be:

    - Arnitel TPC (like a PETG but softer and more wear-resistant like TPU)

    - Nylon (something with PA66 like UM Nylon, which is wear resistant - however it should withstand the chemicals too).


    Hope this helps!

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