The NU-BLAK® SYSTEM allows the chemical blacking (oxydising) of iron components using a dipping method.
A sub-group is the blacking of the parts with brush-on cream. Especially suited for the treatment of small parts or spots under repair and refurbishing conditions.
The NU-BLAK® procedure is qualified to achieve a uniform fine-dark black surface and will increase by oiling/sealing the corrosion protection of materials like cast iron, alloyed and low-alloy steel, zinc and zinc pressure die cast without secondary treatment.
These are commonly found within the manufacturing industry. Producers of mass production components are using the chemical blacking process to reach a decorative character in an inexpensive way. Another important feature is that the finish does not result in an alteration to the dimension of the component. This is a special advantage against other kinds of corrosion protection coatings.The treatment works without hydrogen embrittlement and fulfils the requirements of DIN 50 938 easily.
Blacking at room temperature means the dipping of iron components in a mild, light chemically, non-polluting solution at about 20°C. The effect of the solution is a change of the surface structure. Treated surfaces will get a black coat of iron oxide.
Unlike the conventional blacking method at 145°C in connection with dangerous, toxic acids and solutions, the NU-BLAK® SYSTEM will work only at room temperature.
List of Applications
Industrial components | Gauges and measuring instruments |
Turn- and mill parts (also tolerances) | Parts of cast iron and pressure die cast |
Hydraulic components | Hand tools |
Printing machine parts | Automotive, gears, etc. |
Tool holders | Joints and artificial jewellery |
Geared components | Springs, screws, standard parts |
Tool- and die Shops | Tools of all kind – also repair |
Advantages of NU-BLAK® -blacking at room temperature compared to the conventional method
Forget regarding of warnings and directions like:
You ought to consider the high energy loss for the permanent run up of a conventional plant. The NU-BLAK® System works without energy consumption. You can interrupt and restart the process every time and even after long storage time the chemicals do not collapse!
We provide EU-Application data sheets for the safe and functional handling.