Non-destructive surface testing of additive manufactured components at Toolcraft

June 22, 2015

C-2-After-preliminary-clean_1_1

After preliminary cleaning of the

components in an alkaline bath, the alkali

is washed off in a three-stage bath using

demineralised water

A process for the non-destructive testing of components produced via metal Additive Manufacturing is now being used by German engineering company Toolcraft. The system offers the opportunity to check components using a non-destructive method for cracks, overlaps, folds, pores and binding errors in the surface.

Precision parts and high-tech components are wetted with a fluorescent penetrant, thereby making even the smallest cracks visible under UVA light. The process is predominantly used on metallic materials, although it can also be applied to other materials such as ceramics, assuming the surface is suitable for testing with penetrants.

Each testing process starts with preliminary cleaning of the components in an alkaline bath.

C-3-The-precision-parts-and_1_1

The precision parts and high-tech

components are wetted with a fluorescent

penetrant for the testing

Following this, the alkali is washed off in a three-stage bath cascade using demineralised water. To protect the environment an activated charcoal filter continuously filters the process water and prepares it for further cleaning processes. Toolcraft has also installed an additional water treatment plant that filters the water required for the process so it can be reused in further test procedures.

Once the fluorescent penetrant has been applied by an electrostatic method, the component undergoes intermediate cleaning. Following this, it is immersed in an emulsifier bath in order to partially dissolve the penetrant. Immersion in the water stop bath is used for finishing the process.

The testers apply a dry developer before assessing the component. This picks up the penetrant remaining in the defects and shows it up under UVA light.

C-4-Even-microscopically-sm

Microscopically small cracks are

revealed in the evaluation cabin

Even microscopically small cracks, which can have a decisive effect in aerospace applications, are revealed in the evaluation cabin.

www.toolcraft

 

 

 

 

 

Useful links

To submit news and articles for publication on Metal Additive Manufacturing email us at [email protected] 

Go to the Metal-AM homepage | View all news | Subscribe to our free e-newsletter

Metal AM magazine Summer 2022

In the latest issue of Metal AM magazine

Download PDF
 

Extensive AM industry news coverage, as well as the following exclusive deep-dive articles:

  • Transforming access to medical implants with PrinterPrezz
  • Lessons from 2021’s Olympic bike crash
  • Xerox liquid metal AM
  • Additive Manufacturing for oil, gas and maritime
  • Multi-material metal parts by Powder Bed Fusion
  • Findings from Wohlers Report 2022
  • The challenge of grain size: X-ray powder diffraction analysis of parts made by metal AM

The world of metal AM to your inbox

Don't miss any new issue of Metal AM magazine, and get the latest industry news. Sign up to our twice weekly newsletter.

Sign up

News from the industry…

    News from the industry…

    Discover our magazine archive…

    The free to access Metal Additive Manufacturing magazine archive offers unparalleled insight into the world of metal Additive Manufacturing from a commercial and technological perspective through:

    • Reports on visits to leading metal AM part manufacturers and industry suppliers
    • Articles on technology and application trends
    • Information on materials developments
    • Reviews of key technical presentations from the international conference circuit
    • International industry news

    All past issues are available to download as free PDFs or view in your browser.

    Browse the archive

    qweqw

    Looking for AM machines, metal powders or part manufacturing services?

    Discover suppliers of these and more in our comprehensive advertisers’ index and buyer’s guide, available in the back of Metal AM magazine.

    • AM machines
    • Process monitoring & calibration
    • Heat treatment & sintering
    • HIP systems & services
    • Pre- & post-processing technology
    • Powders, powder production and analysis
    • Part manufacturers
    • Consulting, training & market data
    Download PDF
    Share via
    Copy link
    Powered by Social Snap