INFINITE POSSIBILITIES.

Service is a top priority for us

Our customers are at the centre of everything we do.

We will work with you to develop the best and most economical coating solution for you.

Talk to us - we will be happy to advise you!

Technical advice

Our experienced sales team will be happy to provide you with advice and assistance in all questions relating to coating.
From the optimum design of your component to be coated to the selection of the optimum coating material for your requirements, we will support you throughout the entire process chain.

Our test methods

The following test methods and test procedures are used in our company:

Coating thickness measurement of the coating
DIN EN ISO 2178 and
DIN EN ISO 2360
Pore testing
ASTM D5162 and
DIN 55670
Constructive design Coating conformity
DIN EN 14879-1
Blasting quality / surface preparation
DIN EN ISO 8501-1 and
DIN EN ISO 12944-4
Blasting media (for conductivity)
DIN EN ISO 8502-6 and
DIN EN ISO 8502-9
Blasting media for contamination
ASTM D4940
Testing the electrical surface resistance
DIN EN 61340-2-3
MEK test
ASTM D4752
CSN test
DIN EN ISO 8502-5 and
DIN EN ISO 8502-11
Cross-cut test
DIN EN ISO 2409 and
ASTM D3359
Adhesion test (pull-off test)
DIN EN ISO 4624 and
ASTM D4541
Checking the compressed air
ASTM D4285
Determination of the hardness of coatings
DIN EN ISO 15184
Measurement of surface roughness
DIN EN ISO 4288
Oxygen measurement
DIN EN 50104 and
VDE 0400-20
Monitoring the climate conditions
Humidity and temperature
Determination of the chloride ion content on prepared steel surfaces
DIN EN ISO 8502-4

We can offer you further test methods on request.

Our capacities

In three separate production halls, we have eleven coating systems with stoving and sintering ovens of different sizes, which can cover a maximum temperature range of up to 500°C, for coating your workpieces.

From the size of a coin to a tonne

11

Ovens

11 different systems in 3 different halls
10m

Length

maximum
3m

Diameter

maximum
8t

Unit weight

maximum

Pre-treatment

SANDBLASTING

Sandblasting is the pre-treatment of the surface of a workpiece by using sand (corundum) as an abrasive to remove rust, dirt, old coatings, paint and other impurities. This process is used to optimise the pre-treatment of the workpiece for the coating process. The abrasive, in this case corundum, is applied to the surface to be treated under high pressure via a special hose and nozzle system. Due to the abrasive effect of the corundum, parts of the surface are loosened and ultimately removed, resulting in a clean surface. Hüni+Co has various blasting systems on which we can process workpieces of up to 10 metres in length with corundum of various grain sizes for you. Blasting with corundum according to DIN EN 12944-4

GLASS BEAD BLASTING

Glass bead blasting is a similar method of pretreating the surface of a workpiece to blasting with sand or corundum. However, small glass beads are used here, which are significantly finer and therefore produce a finer surface. The special thing about glass bead blasting is that it achieves a plastic deformation, which creates the desired internal stress in the workpiece and thus significantly increases the fatigue strength. This is why it is often referred to as shot peening. With glass bead blasting, the surface is less roughened than when blasting with sand or corundum. The more filigree the glass beads, the finer the surface structure, right up to a polishing effect.

DECOATING USING THE PYROLYSIS PROCESS

Pyrolysis is a pyrolytic decomposition process. In a thermal process, without the addition of oxygen, chemical compounds are broken down; large molecules are converted into small molecules. Colloquially, pyrolysis also means burning or incineration. In the case of plastics, the matrix is destroyed and they disintegrate. In coating technology, pyrolysis is an upstream process when workpieces with an old coating are refurbished, i.e. recoated. We offer pyrolysis as a possible decoating process for the pre-treatment of your workpieces.

THERMAL DEGREASING

A grease-free surface is an essential condition for the substrate adhesion of coatings and other surface finishes. In addition to chemical degreasing, thermal degreasing is also used for this purpose. Substances such as oils and greases burn at high heat during thermal degreasing. The residues produced during the process would reduce the substrate adhesion of a coating and are therefore removed, e.g. by radiation.

Glossary

In our glossary you will find a short and concise explanation of many relevant keywords from the world of plastic coatings.
The aim of the glossary is to provide a general introduction to topics related to plastic coatings.
If you have any further questions, please do not hesitate to contact us personally!

To the glossary

FAQ

FAQ - Frequently Asked Questions.
Here we provide you with answers to the questions we are asked most frequently.

To the FAQ

Data sheets

Technical data sheets for our various coatings are available on request - write to us!

Handling and cleaning guidelines for coated tank containers