Stainless steel for compressed air and cooling water
Thyssen Krupp has built a new plant in Röhrsdorf near Chemnitz. For the manufacture of special machines for battery production, it was important to install a reliable system for compressed air and cooling water. The high requirements could be met with the stainless steel system NiroTherm.
With the new building in Röhrsdorf, Thyssen Krupp System Engineering has created a further foothold in the Chemnitz region alongside the electromobility competence centre in neighbouring Hohenstein-Ernstthal and the Pleißa technical centre.
The production site was built on the 40,000 m2 site by the real estate developer VGP Industriebau with its German headquarters in Düsseldorf and is leased to the mechanical engineering company. Depending on demand, up to 250 employees will be employed there. The focus is on environmentally friendly mobility. The internationally active company is part of thyssenkrupp Industrial Solutions, a system partner for all essential components of the car body and powertrain process chains in the automotive industry.
The building
The production hall with a size of around 9,400 m2 was built in a precast concrete construction according to the latest standards. Radiant ceiling panels were installed for heating the interior. The compressed air required for production is generated by a total of four Compair compressors, of which two models were used: Two speed-controlled L37-RS and two fixed-speed L37-10A compressors.
To ensure that the system achieves a long service life, a treatment technology in the form of four refrigeration dryers with filter technology was installed. As a result, the pressure dew point is 3°C and corresponds to class 4. This guarantees that the medium is available for the processing operations in a consistent quality. The compressed air quality is classified according to the ISO 8573 standard - in this case it corresponds to:
- Class 1 for solid particles,
- Class 4 for humidity (dew point) and
- Class 1 for oil
An important aspect of the compressed air system is the distribution: the system should work permanently with as little loss as possible. For this purpose, piping had to be designed without leaks. This was realised and tested by the company druckluft-technik Chemnitz.
Compressed air and cooling water
For distribution in the production area, the compressed air and cooling water piping was laid as DN 65 ring lines. 30 compressed air connections and 5 cooling water connections were integrated into the ring pipelines, each in DN 25.
Each connection is secured with a shut-off valve so that it can be reacted to later expansion requirements without major interventions in the plant operation. The compressed air lines are not insulated. The system designed by Klußmann Partnerschaft, Gütersloh, is serviced every 4000 operating hours, at the latest once a year. This process also includes checking all shut-off and testing devices.
NiroTherm stainless steel system
The NiroTherm system from SANHA was used. The pipes and all stainless steel fittings are made of 1.4301 material. This material offers the necessary durability and reliability that was required in this construction project - after all, industrial production must run as uninterruptedly and with as little maintenance as possible.
Combipress for fast work processes
When installing pipes and fittings today, speed is of the essence - along with proper workmanship. To achieve this at every single step, the installers could rely on the advantages of combipress: The processing of the pipes and fittings is thereby considerably simplified thanks to the properties of universal contour, sliding adhesion and "unpressed leakproof", and processing reliability is increased.
Existing tools with different original press contours (V, M and SA) can be used up to and including 54 mm without any problems. For larger dimensions, the original SA and M contours can be used. For the craftsman, this means easier handling and more safety when pressing, because the universal contour or tool compatibility virtually rules out any confusion of pressing jaws on the construction site that could cause damage. Planning and execution are 100% in line with the client's ideas.
Essentially, the "very competent support from the Sanha field representative, Dietmar Pohling, contributed to this", explains the company druckluft-technik Chemnitz. "We have been working with the piping systems that have this combipress function for a long time and can look back on 10 years of the best experience."