Blackening Coloration Agent under Normal Temperature

Highly Concentrated Blackening Agent (No Sludge Black Color)

Everyone can easily execute blackening coloration under normal temperature.

Ⅰ. Features

❶ Ease of blackening guaranteed even for any complicated shape articles thanks to no generation of gas.

❷ Blackening appearance darker than conventional products.

❸ Simplified treatment technique requires no special facility, allowing only of plastic container for small quantity of treatment.

❹ AT&C’s blackening agent has no odor and flammability allowing no change in quality against the long period of storage.

❺ Almost no variation of dimension before and after treatment.

❻ Brushing and spraying are applicable other than dipping for alternative usage.

Ⅱ. Applications

Applicable to wide variety of blackening coloration processes of metals, parts and finished products.

❶ Places subject to complicated shape and difficulty of removing gases (sludge).

❷ Machined Pins, bolts, nuts, washers, springs, shafts, etc.

❸ Components, finished products and castings of machineries, jigs and tools.

❹ Partial blackening of machine assemblies or blackening of surfaces with cracks.

❺ Blackening of large steel products which cannot be placed inside of any containers.

Ⅲ. Technical Data

●Color----Blue

●Specific Gravity----1.102

●Odor----None

●PH----1.2

●Flammability---Non-flammable

●Blackening Film Thickness---0.2~0.3μ (2/10,000mm~3/10,000mm)

●Objects Complicated for Blackening--- Blackening performance declines for those heat treated metal surfaces, hardened metal surfaces due to severe milling machine or lathe machining processes. (To be stained.)

● Interference to Human Body---No interferences are presented to healthy skin. Yet, it is recommended to wear the rubber or vinyl gloves as much as possible as it may cause stinging and inflammation on wounds, mucous membrane & etc.

As well, wash with abundant amount of water after completion of work.

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Ⅳ. Disposal of Waste Liquid

The blackening coloration agent contains no harmful and toxic substances such as CN compounds, toxic heavy metal arsenic like hexavalent chrome. Leave the waste steel pieces in the waste treatment liquid container for 5 days, execute filtration for mentioned liquid and dispose as it is for disposal treatment. As well, in the event of urgency, apply the solution containing 5~10% ferrous sulfate and slaked lime neutralizing as pH=8 to sediment the metal hydroxide residues. Execute filtration of above residues disposing the residual liquid as it is, and dispose the compressed sediments. 

Ⅴ. Usage

◆Container: Use beakers or poly containers for small amount. For big amount, use FRP or non-metallic containers. (Metal container cannot be used due to blackening of container itself.)

❶ Fat Removing (Remove oil content) ⇨⇨Blackening coloration requires the complete fat removing as it is processed with chemical reaction. The insufficient fat removing results in the defective blackening. The special fat removing agent is available with 1.1.1 TCE or the TOBIKA MERIT, the product of AT&C Corporation as exclusive fat removing agenty. For use of fat removing agent, dip the blackening desired articles to be processed for 1~2 minutes, and wipe with clean cloth or execute natural drying. 

❷ Surface Activation⇨⇨ For presence of rusts or foreign materials, either clean the surface up with rust remover or activate the metal surface by dipping with activation.

❸ Blackening Treatment⇨⇨ Put the fat removed article in blackening coloration liquid prepared and take out after 10 seconds or 1~2 minutes after shaking well or dipping. (Use the blackening agent as diluted with appropriate amount of water for economy, and use the undiluted liquid as it is in the event of using brush or spray.)

❹ Washing (Water washing) ⇨⇨Dip the article completed of blackening in water as not wiped, and wash by shaking lightly.

❺ Polishing Agent Treatment (Anti-corrosion treatment)⇨⇨Upon completion of washing with water, dip the article stained with water as it is in the blackening polishing agent (Anti-corrosion treatment) for 1 minute. Wipe with cloth or tissue paper as necessary, and use. (Leave the article alone for over 1 hour after taking it out of polishing agent to obtain sufficient effect.)

※Caution: When the temperature of blackening agent goes over 20℃, the gas (sludge) may be generated. With such occasion, put any cold stuff such as ice in cooling the temperature down below 20℃ and proceed with work.

❶ Ease of blackening guaranteed even for any complicated shape articles thanks to no generation of gas.

❷ Simplified treatment technique requires no special facility, allowing only of plastic container for small quantity of treatment.

❸ AT&C’s blackening agent has no odor and flammability allowing no change in quality against the long period of storage.

❹ Almost no variation of dimension before and after treatment. Thickness of blackening film – 0.2~0.3 microns.

❶Remove fat. ⇨⇨❷Dip in blackening agent for about 10 seconds.⇨⇨❸Wash with water.⇨⇨❹흑Blackening Polishing (Anti-corrosion)⇨⇨❺ Blackening coloration completed.

Brief Usage

No coloration may be made when any oil contents or foreign materials exist on the surface of object to be blackened. Thoroughly clean the surface up, and wipe well with dry cloth or by blowing air after dipping in the fat removing liquid for 1~2 minutes.

Put the article to be blackened in the blackening coloration agent for 10 seconds at least up to 2~3 minutes for long to observe the blackening process.

For brush coloration, execute brushing for several times for sufficient blackening.

Wash the article completed of blackening with flowing water.

Dip in the polishing agent for about 1 minute. (Putting in the polishing agent with no drying up of water is allowed.)

Thoroughly dry up or wipe the polishing agent with cloth, and use.