Incoming Inspection

Casting quality is not determined solely by individual controls, but much earlier in the design and manufacturing processes at the supplier. The quality of the manufacturing processes at our foundries is ensured by our supplier development. Here objectives are agreed and the implementation of necessary measures is monitored on site by LESER.
LESERs origins are in the brass foundry, which is why LESER has its own knowledge and experience in casting production. This knowledge is important for the initial design of the casting components, which later enables high quality casting.

Wareneingangsprüfung — Incoming Inspection

Incoming inspection of semifinished goods

Spring testing

The static spring test calculates the spring forces occurring for certain spring lengths or, conversely, the corresponding tensioned spring lengths for certain spring forces. To carry out this test, there are a large number of machine types, each of which is configured for a limited but largest possible force measuring range.

The "ELASTICOMETERE E 1000" spring testing machine exhibited here is designed for testing springs of different dimensions, especially long compression and tension springs.

Further technical details about the spring testing machine and a list of spring data from 1992:

Magnetic particle crack testing

Magnetic particle crack detection is another non-destructive testing method to determine surface defects such as cracks or porosities. In contrast to dye penetrant testing, it can also detect defects slightly below the surface. Magnetic particle crack detection is used for magnetizable ferritic materials.
LESER's magnetic particle crack detection system can:

- Check components up to 3”
- Approx. 5,000 components are tested per year
- Mainly safety valve bodies

Further Information:

The casting to be tested is mounted and electrically magnetized. Cracks become visible when it is flushed with a fluorescent liquid containing iron particles. The test is carried out under UV light to make the magnetically caused fluorescent deposits in or over casting defects visible.

Inspection of bodies

A comprehensive quality control of the casting material takes place in the incoming goods inspection. Inspections carried out are e.g:

- Inspection of dimensions in 2D and 3D
- Document verification
- Material identification by spectral or radiographic fluorescence analysis
- Ultrasonic test

Further information:

Liquid penetrant check

Dye penetrant testing is a non-destructive testing method for detecting surface defects such as cracks or porosities.

- Due to the flexibility of this test method it can be used for all sizes and components at LESER.
- The applied paint is washed off after a contact time of 20 minutes.
- By subsequently applying a developer, any defects become clearly red on the white surface after a further 20 minutes.