To create a protective layer against corrosion on metallic surfaces, these surfaces are often burnished. By immersing the workpieces in a solution, black mixed-oxide layers are formed to protect the surface. Stainless steel, heavy metals, structural and tool steels, as well as non-ferrous metals, aluminum and aluminum alloys can all be processed with Emil Otto’s excellent burnishing solutions. All burnishing solutions are designed for immediate use in metal processing. The coatings created by burnishing are resistant to bending and abrasion, allowing subsequent further processing of the metal. Likewise, burnished surfaces act as an adhesion primer for other surface coatings such as lacquers.
Product | Application area |
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NIGRIT “AL-LIQUID-BLACK 4.20” | COLD BURNISHING - BLACKENING of aluminum, acts only on blank treated areas |
NIGRIT “K” | COLD BURNISHING - BLACKENING of iron and steel, corrosion protection |
Nigrit “M-Extra” | COLD BURNISHING - BLACKENING for copper, tin, zinc, special copper alloys and for special alloys of copper and steel |
NIGRIT “M” | COLD BURNISHING - BLACKENING of copper, brass and bronze |
NIGRIT “Ti” | COLD BLACKENING - BLACKENING AGENT for titanium and titanium alloys, corrosion protection |
NIGRIT “VA-Extra” | COLD BURNISHING - BLACKENING of stainless steel, corrosion protection |
NIGRIT “VA” | COLD BURNISHING - BLACKENING of stainless steel, corrosion protection |
NIGRIT AI-Extra | The solution supplied ready for use is to be filled into a resistant container made of GRP, HDPE or PP. |
NIGRIT GEL “Al Liquid Black 4.20“ | COLD BURNISHING - BLACKENING of freshly sanded aluminium |
NIGRIT GEL “K“ | COLD BURNISHING - BLACKENING of iron, steel, zinc, tin, lead |
NIGRIT GEL “M“ | COLD BURNISHING - BLACKENING of brass |
NIGRIT GEL “VA“ | COLD BURNISHING - BLACKENING of stainless steel |