Leica Cleanliness in the automotive industry

Leica Cleanliness in the automotive industry

In the automotive industry, even the smallest components on a single part can cause malfunctions. Gasoline, lubricants, and urea filtration systems are extremely vulnerable. Therefore, the cleanliness of parts has become the most critical quality characteristic in modern manufacturing processes, especially when assembling parts provided by different suppliers.

The Leica cleanliness detection system has a history of more than 10 years. So far, it has been able to provide a relatively complete overall cleanliness solution. Through intuitive software, more accurate and repeatable measurement of particles on the filter membrane, it can bring customers Better work efficiency.

First of all, the light path of the Leica Cleanliness System is currently specifically designed for cleanliness. The unique automatic polarization can directly and quickly and accurately identify reflective and non-reflective particles during the scanning process. The automatic polarization method is based on the difference in refractive index of reflective and non-reflective particles, and the brightness and darkness under the polarizer, combined with the gray level judgment of the software to intuitively and accurately judge the reflective and non-reflective particles. This determination method is not affected by the shape of the particles. As long as the particles are matt, they are completely black under polarization, and the rest of the particles are reflective particles. Other companies use natural light, which is highly misjudgmental for spherical particles. The reason is that the spherical matt particles will show the duality of partial darkness and partial brightness under natural light. For software that only relies on grayscale to identify, it is difficult to determine whether they are reflective or matt particles.

Secondly, the fixture specially designed for filter paper by Leica Cleanliness System can effectively prevent the deformation of filter paper from affecting the test results.

At the same time, the Leica cleanliness system is also compatible with the current automotive industry's most demanding casting porosity testing requirements: The entire system is compatible with the current automotive industry's extremely demanding casting porosity testing based on cleanliness analysis. Requirements for use. As we all know, VW's porosity testing standard is a specification for casting porosity testing extended and formulated in accordance with the German Foundry Association VGD-P201 standard. This specification puts forward very high requirements on graphics processing and sampling requirements. That is, according to the characteristics of the sample section, the average shrinkage ratio of the largest area is taken. In this regard, the LAS X software package developed by Leica adds a multi-shape sampling area setting and automatic image stitching function that meets the VW specification on the basis of the traditional rectangular sampling method, which has been highly praised and successfully provided accurate porosity detection. Spend.