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VOSS Fluid GmbH Article
Reliable hydraulics thanks to
high-quality connection technology
By Dr.-Ing. Harald Pott, division manager technology at VOSS Fluid GmbH
Introduction
Small components with big system function: the process
reliability of hydraulic connection technology is crucial for
the effective and economical operation of modern working
machinery in all sectors. A central aspect here is the pursuit
of greater energy efficiency – yet the loads in fluid technology
also rise as efficiencies increase. To ensure that systems
subject to permanent stress – such as plastic injection
moulding machines and large excavators in mining – can
also function under tougher conditions, components are
needed that correspond to the requirements for the leak
safety of connection points, while providing effective corrosion
protection. For the user this means, besides a choice of
system-compatible connecting components, the focus is on
correct assembly and the selection of a competent supplier.
VOSS Fluid GmbH is a manufacturer of pipe connecting
systems and a system partner to international mechanical
engineering. The product portfolio comprises tube connections
for stationary and mobile hydraulics including cutting ring
and flanged screw couplings, tube forming systems, flange
couplings, valves and accessories. VOSS Fluid has long-
standing expertise in the production of customised connecting
parts, enabling it to implement this effectively in the
development of system solutions and technical advice for its
customers. The result: consistently high-quality components,
a high level of corrosion protection, time-efficient assembly
capability of the components, and hydraulic systems with
long-term leak tightness.
“Surface” quality
A central, qualitative condition is the coating of the tube
connections. This is a prerequisite for permanent corrosion
protection along with functionally stable and hence economic
components. VOSS Fluid utilises its in-house, sustainable
High levels of efficiency, alternating temperature
conditions and frequent load changes – hydraulic systems
of stationary and mobile working machinery are subject
to continuous loads. To ensure the greatest possible
functionality long-term, corrosion-resistant and precise
connection technology is indispensable.
zinc-nickel base coating VOSS coat for all tube couplings.
These fulfil all specifications of the EU End-of-Life Vehicles
Directive, which has prohibited surfaces containing chromium
VI since 2007. Together with independent research institutes
and universities (for example Aalen University of Applied
Sciences), a corrosion protection has been developed that
is around ten times better than conventional zinc coatings
in comparison to the base coats. In contrast to purely zinc
surfaces, zinc-nickel does not form any distinct white rust
during corrosion, but instead only a slight grey haziness. The
values are 50 times below the limit values stipulated in EU
Larger connecting parts with up to 2.5kg weight and sensitive outer
threads are placed manually on frames by personnel, thereby
preventing potential damage to the thread during the coating process