Hammer finish painting
Hammer finish or hammer finish is a finish with a special varnish that creates a network-like structured surface when it dries. This structure (typically measuring around 3 mm) creates the visual impression of a surface that has been treated with many hammer blows.
The slightly iridescent areas are created by the different orientations of the smallest, shiny platelets that are suspended in the hammer finish lacquer . These flakes are aluminum flakes or the mineral mica . Mica is chemically inactive and very stable. The special surface structure is caused by specific surface defects caused by the addition of small amounts of silicone oil .
The hammer finish is mainly used as a means to beautify technical equipment and less as a protective varnish . The visual advantage of hammer finish painting is that the painted surface looks good even if the component surface itself is not completely smooth and regular. In order to achieve the same optical effect with a smooth finish, the component surface would often have to be reworked, for example smoothed, polished or filled. With a hammer finish painting, these steps are not necessary.
In addition, the lamellar pigments increase the durability of the paint. Mica and aluminum protect the binders underneath from UV radiation and prevent rapid aging. Hammer finish paints can also be made relatively hard and scratch-resistant by adding various additives.
Individual evidence
- ↑ Kittel, textbook on paints and coatings, S. Hirzel Verlag Stuttgart 2008, ISBN 978-3-7776-1016-0 .
