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Process monitoring | TRUMPF

Process monitoring to verify component quality

TRUMPF Power Bed Monitoring for monitoring component quality

The process monitoring focuses on the LMF process. The powder bed is monitored during the laser exposure process. Two products are available for this purpose: Powder Bed Monitoring enables you to monitor the powder bed, and Melt Pool Monitoring enables you to monitor the weld pool of your TruPrint machine. As a result, you have full control over the quality of your components – layer-by-layer. Your production system is also made more efficient as faults are identified quickly.

Layer-by-layer monitoring of the component quality

View of the weld pool in the TruPrint 2000

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How does Powder Bed Monitoring work?

A central component of process monitoring is the so-called Powder Bed Monitoring function. You can automatically monitor the powder bed via an integrated camera in the TruPrint machine and the automatic image processing function. You are therefore provided with an overview of the component state at all times and can analyse the quality parameters layer-by-layer. The TruPrint machines are equipped with a high-resolution camera system, so that you have a precise view of each powder layer. Automatic evaluations are possible in conjunction with the image processing function. Here, the integrated dark field illumination additionally supports the image analysis. As the user, you decide the limit values at which notifications or error messages should appear. As the quality parameters are assigned per layer, locating malfunctions is fast and accurate. This means that you can intervene in the current build job at an early stage. In addition to the powder coating, the Powder Bed Monitoring function also records the state of the layer and identifies protruding parts in the powder bed. The process is ideal for evaluating the condition of the components during the actual LMF process and for identifying potential developments at an early stage. After the LMF process, a comprehensive analysis of the individual layers can be performed via the image selection and, among other things, be compared with CAD data.

Melt Pool Monitoring – monitoring the weld pool

In order to have a better overview of the LMF process in the TruPrint machine and to be able to optimally evaluate the component quality, you can take advantage of the Melt Pool Monitoring product for the TruPrint 2000 and the TruPrint 5000, alongside the Powder Bed Monitoring function. Melt Pool Monitoring monitors the weld pool of the laser metal fusion process using sensors. Take advantage of a detailed quality check and documentation, layer-by-layer. This enables you to detect any process deviations early on, including during series production, and, if necessary, visualise areas of the component that are critical. These key figures can then be automatically compared with a reference build job to monitor the stability of the process. When using several lasers, you can also monitor all of the weld pools in parallel with ease.

Note: this product range and information may vary depending on the country. They are subject to changes in technology, equipment, price and range of accessories. Please get in touch with your local contact person to find out whether the product is available in your country.

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