room temperature blacking process

benefits

Safe – unlike conventional blacking methods it is non-hazardous
Simple – the solutions are topped up and not replaced when they become weak.
Fast – it is on-site and ready to use at any time. There is no preparation required, the tank lids are taken off and components are blacked without any delay.
Inexpensive – the Blackfast solution coverage per litre is high and the resultant cost per unit of blacking is markedly less than the conventional method.

Blackfast creates a corrosion resistant finish without dimensional change. This is an attractive finish for machined parts manufactured to tight tolerances, where plating or painting would not be acceptable.

process

Blackfast's room temperature blacking process is a simple dip operation specifically designed for use in factories. The process does not materially effect dimensions and a uniform colouring is obtained over machined surfaces, threads and blind holes. Blacking is achieved by chemical conversion of the metal surface. The process entails degreasing, immersion in a surface conditioner and blacking solution. Corrosion protection is afforded by a final immersion in a dewatering oil.

a typical line configuration

blacking process schematic (pdf).

20 litre blacking line construction

modular blackfast line construction

option 1

option 2