Cost optimization case of powder spraying process - application of photothermal non-contact wet film thickness measurement technology

In the powder coating process, it is often necessary to measure the dry film thickness of the powder coating. If the coating thickness is not within the acceptable range, there will be risks of poor corrosion performance, adhesion, and bending performance. However, the current powder coating Thickness Gauge can only measure the data after the powder coating is baked to form a dry film. If the coating is too thin, the workpiece needs to be resprayed. If the coating is too thick, it is prone to paint explosion and damage. Cause the waste of coating raw material.

Is there any way to predict the dry film thickness immediately after powder application? No need to wait for coating to cure before measuring film thickness?

The PowderTAG Powder Coating Thickness Analyzer of TQC Company in the Netherlands is an instrument for non-contact and non-destructive measurement of the thickness of powder coatings before curing by photothermal method. Complies with standard DIN EN 15042-2. This lightweight and robust instrument can quickly and accurately measure the thickness of powder coatings on metal substrates before curing. Using the dry film thickness data for correction, the instrument can quickly read the dry film thickness from the wet film data.

Applications:

A familiar aluminum factory used a PowderTAG powder coating thickness analyzer to measure the thickness of 20 workpieces before the powder coating was cured. After the coating was cured, it used an eddy current dry Film Thickness Gauge to measure the film thickness of the same point. The data as follows:

From the experimental data, it can be clearly seen that the film thickness correspondence between the PowderTAG powder coating thickness analyzer and the eddy current dry Film Thickness Gauge before and after the powder coating is cured is very good, the difference value range is small, the maximum difference is 4um, the data is uniform and fluctuating Also smaller. In this regard, it is determined that the accuracy of the PowderTAG powder coating thickness analyzer has a certain guarantee, and it can be used to monitor the completion effect of the spraying process, thereby controlling the coating thickness, reducing material consumption, and saving costs.

The PowderTAG powder coating thickness analyzer measures the thickness of the coating before curing, which means that the defects of the coating can be found in time for rapid correction, and the measured wet film thickness data can be used to quantify the product quality and ensure the dry film thickness. Under the premise, reduce the use cost of powder coating. In addition, when different products are sprayed, the powder spraying machine can be adjusted according to the quantified data, or data reference value can be provided for the manual spraying process.