goudsmit magnets are present in various locations in automobiles: gearboxes, sensors, brakes, water pumps, electric motors, ignition coils, and starter-generators, as well as in the currently widely used "lane departure warning" systems; these emit an audible warning or vibration alert when you drift off the road. This is achieved using magnets, which must function correctly to prevent automobile accidents. Therefore, measurement is critical.

For automotive component suppliers, finding suitable magnets for electric motors, actuators, or sensors is not easy. For both automotive component suppliers and magnet suppliers, only magnetic measurements can provide adequate assurance. Measurement is a standard part of the IATF16949 process. These measurements are used to calculate the Cpk value (process capability index), which is essential for ensuring reliable magnets in products such as motors, actuators, or sensors. The Cpk value is part of statistical process control and provides information on how manufacturers control their processes.

Cpk value of goudsmit magnets

The higher the Cpk value, the better the magnet supplier's control over the process. This makes the statistical probability of product failure negligible. Moreover, since the magnet supplier's final inspection also serves as the customer's incoming inspection, the likelihood of failures in automobiles, machines, or systems after delivery is reduced.

goudsmit magnets are used in GOM 3D scanners

A brief explanation from Marc Teeuwen, an expert in high-tech magnetic components: "Assume your magnet has nominal dimensions with plus/minus tolerances. When the values measured by the GOM 3D scanner are very close to the nominal dimensions, you obtain a high Cpk value, indicating that the manufacturer's process is well controlled. This means the statistical probability of obtaining magnets outside the tolerance band, and thus rejected, is very small. The GOM 3D scanner measures the magnets and automatically generates reports in which the Cpk value is derived from the measurement data. This is very important for customers in the automotive industry."

goudsmit magnetsMagnetic tolerances

Marc continues: "When you have a block of magnets in front of you, you see the dimensions: length x width x height. Assume the length is 20 mm, with a standard tolerance of ±0.1 mm for this dimension. This means the length of the magnets we deliver must always be between 19.9 mm and 20.1 mm. However, it is important that the tolerances do not vary too much: they should all be around 20 mm, with deviations as small as possible. The smaller the deviation from 20 mm, the higher the Cpk value."

goudsmit magnetsHigh quality requirements

This also reduces the possibility of magnets exceeding tolerances. If the tolerance line is flat, the manufacturer has good control over the process, and the likelihood of defective products is low. The GOM 3D scanner visually displays this in the measurement report. For automotive component suppliers, this is extremely important: it demonstrates that the products they deliver meet the highest quality requirements. Furthermore, this report and the Cpk value are requirements in a series of contracts established for automotive component suppliers.

Goudsmit Magnetics is certified to ISO9001, IATF 16949, AS9120, and ISO140001.