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New cleanroom for laser welding applications put into operation

14.12.2018

New cleanroom for laser welding applications put into operation

Today ProCleanRoom bv from Valkenswaard handed over the new cleanroom to RJ Lasertechnik ready for operation.

The low-particle, clean air of cleanroom class 7 was necessary in order to be able to handle increasingly demanding welding tasks from medicine and semiconductor technology.

Today ProCleanRoom bv from Valkenswaard handed over the new cleanroom to RJ Lasertechnik ready for operation. In future, high-quality components from medical technology and semiconductor technology will be laser welded on 4 laser systems in 2D and 3D operation in an area of around 75 square metres. The particularly clean air of cleanroom class 7 ensures processing with as few particles as possible, as far as this can be guaranteed with the joining process of laser welding.

From mid-January, operations in the cleanroom will initially start on 2 laser systems. A third system for 3D applications will be added from mid-March. There is a separate news page for this new machine.

The personnel lock is used by employees to put on clean cleanroom clothing before entering the low-particle work area of the cleanroom. This prevents dust particles from entering the production area through normal clothing and safety shoes.
The workpieces are fed in and out via a separate material lock. There, too, the outer shipping packaging is removed, and only the workpieces wrapped in clean foil are introduced.

A windowless area for packaging and quality control is located between the two locks and the welding cleanroom. The permissible number of particles for both incoming and outgoing products is checked using UV lights there. Helium leak tests or pressure drop tests of the welded assemblies also take place there. All test results are recorded by the employees in a database.

The working principle of air purification is quite simple. The air in the cleanroom is extracted from the floor on all sides below the slats, transported upwards over the false ceiling, and cleaned there by coarse filters, fine filters, and HEPA filters. The clean air is then fed back into the cleanroom through the ceiling. The air flow always takes place from top to bottom, and in our case the air exchange takes place 24 times an hour.

The quality of the air is checked at regular intervals with a particle measuring device.

A complex ventilation/air conditioning system above the cleanroom ensures a stable supply of fresh air with pre-cleaned and conditioned air. This allows a constant temperature and air quality to be achieved in summer and winter. This system in turn exchanges the cleanroom air between 6 and 10 times per hour. This also ensures the reduction of gaseous products from the welding and testing processes. In addition to the health aspects, it is important to act responsibly in terms of energy consumption.

RJ Lasertechnik GmbH
| Administratie: Boschstrasse 20 | 52531 Übach-Palenberg
| Levering van goederen: Fraunhoferstrasse 1
| T +49.24 51.9 10 54-0 | info@rj-lasertechnik.de