HYDRAULICS
INDUSTRY NEWS
prevention, layer distribution, visual appearance, and friction coefficients – qualitative reproducibility of the 6600 different articles from which the larger product spectrum is derived is always guaranteed. Weight, size, geometry – these are only some of the on average twelve program parameters saved for each article in the production system. They are an important prerequisite for optimally coating the different connecting parts on a recurrent basis. Current strength during electroplating, retention time in the basin, and handling are clearly defined specific to the article. The frames and baskets used for transporting the connecting parts in the plant are in-house developments. Larger connecting parts with up to 2.5 kg weight and sensitive outer threads are placed manually on frames by personnel, thereby preventing potential damage to the thread during the coating process. During pretreatment, the articles are cleaned via ultrasound in order to remove any dirt in the bores. Smaller components are fed to the process via drums. The filling cycle utilizes a conveyor belt in order to minimize falling heights and prevent process-related damage. A significantly reduced coating time also conserves the material. For resource-efficient production, the entire electroplating process is controlled and monitored via online analysis and sensor systems. Automatic dosing pumps ensure that the correct amount of chemicals is always supplied specific to the product. The baths thus remain stable within the specified process limits. The chemicals are continuously kept in motion to ensure they are distributed evenly. After the electroplating process, the layer thickness and nickel content are monitored for each production batch. This means the articles receive a verifiable even coating with VOSS coat, which permanently protects them against corrosion. A pilot electroplating has been operated since 2013. This enables
26 IMT June 2015
Dr.-Ing. Harald Pott, Division Manager Technology at VOSS Fluid GmbH in Wipperfürth.
In contrast to the usual coatings available on the market, VOSS Fluid has optimized the electroplating process in respect to component damage prevention, layer distribution, visual appearance, and friction coefficients.
the entire electroplating process to be mapped in miniature form, while simulating production parameters modified to save resources. Besides the refinement of VOSS coat, optimization of the internal processes in relation to efficiency and sustainability are also integrated here. Users therefore benefit from a future-oriented surface coating and customized system solutions.
Quality from A to Z
The quality of the products, their dimensional accuracyand hence their process-reliable application do not solely depend on the electroplating system. The high product standard begins with the selection of the raw material, which is procured exclusively from audited partners. For example, the composition of the materials is determined via spectral analysis for incoming goods, while the geometry of the goods is ascertained using an optical profile projector, contour measuring device, or depth gauge. Hardness measurements and the elastomer testing for e.g. sealing rings are also conducted here. Another special feature is the machining feasibility inspection, which all articles undergo so as to ensure a
consistently high product quality. A statistical process control (SPC) is used to monitor each production batch – both in machining as well as during coating. The tool wear is continuously monitored during machining. As the sister of VOSS Automotive, system solution provider for the international commercial vehicle and car industry, VOSS Fluid pursues a zero- fault strategy in order to meet the increasingly complex requirements of fluid technology.
Conclusion
The process reliability of hydraulic systems in mobile and stationary working machinery depends on the choice of suitable tube connecting systems for the relevant application, its corrosion resistance, and correct assembly. VOSS Fluid GmbH lays the cornerstone for this with its consulting and application expertise: Assembly-reliable production processes are ensured by accompanying customers through the technical stages of project configuration, engineering, and assembly. Thanks to specially developed zinc-nickel technology along with state-of-the-art production and quality standards, users receive tube connections with optimum assembly torques
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and a high level of corrosion protection. The result is durable machines as well as a process- reliable and economic hydraulic system.
About VOSS Fluid GmbH VOSS Fluid GmbH is an internationally leading supplier of hydraulic connection technology. The company’s head office is in Wipperfürth and, with around 400 employees, it is part of VOSS Holding. The product portfolio comprises tube connections for stationary and mobile hydraulics, including cutting ring couplings, tube forming systems, and flange couplings. VOSS Fluid as a development and system partner of international mechanical engineering focuses on application- specific system solutions. VOSS Fluid offers customers everything from a single source: from project planning and engineering, production and assembly to economic logistics services. With its four own sales companies in Europe and Asia as well as further VOSS Group representations and a worldwide network of dealers, VOSS Fluid ensures the reliable distribution of its system solutions at all times.
More information:
Catrin Neukirchen • VOSS Fluid GmbH Telephone: +49 (0) 2267 63-5653 Fax: +49 (0) 2267 63-9653 Email:
catrin.neukirchen@
voss.net Internet:
www.voss.de/de/fluid
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