Blackening
 The blackening process provides a black decorative finishing and a reasonable increase at the corrosion resistance on the parts. The blackening is applied at several areas of the mechanical industry, and can be used in a simple, economical and safe way. Examples of application: cutting tools, springs, valve bodies, tool boxes, fixtures, molds, hydraulic components, chains, gears, screws, tools and machinery, automobile parts, etc.
Nowadays, the blackening processes can be divided in two: hot and room temperature.
Hot blackening uses a caustic salt that, when mixed with water and under temperature (135-140ºC), produces an uniform and adherent ferrous-ferric oxide black finishing on the surface of the parts. STEEL parts with less than 12% chrome can be treated.
Room temperature blackening is done between 20 and 30ºC and uses concentrated liquid solutions (BLACKFAST solutions) dilluted in water, and through chemical reactions produces uniforme black finishing on the parts. It is an ecological process, extremely safe and simple to operate. STEEL AND CAST IRON parts with less than 12% chrome can be treated.
| Products |
Working Temperature |
Characteristics |
| Ferroblack 1 |
135-140ºC |
HOT blackening. Produces an uniform and adherent blackening on the metallic surfaces of mild and alloyed steels (with crhome leves under 12%) |
| Ferroblack 2 |
135-140ºC |
| Blackfast 181 |
20-30ºC |
ROOM TEMPERATURE BLACKENING solution for steel and cast iron |
| Blackfast 551 |
20-30ºC |
Conditioning solution for ROOM TEMPERATURE BLACKENING |
| Blackfast 716B |
20-80ºC |
Alkaline degreaser used in the ROOM TEMPERATURE BLACKENING process |
| Blackfast 833B |
20-30ºC |
Dewatering and proctetive oil used in the ROOM TEMPERATURE BLACKENING process |
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