Blackie C Copper, Brass, Zinc Room Temperature Blackening Agent

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BC Blacky C Tohbi Chemical

last updated：Feb 03, 2020

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Black dyeing can be easily done at room temperature by anyone, anywhere. (This product is a concentrated solution, so it should be diluted with tap water before use.)

Black dyeing can be easily done at room temperature by anyone, anywhere. (This product is a concentrated solution and should be diluted with tap water before use.) 【Target Metals】 It can be widely used for black dyeing of finished products and parts made of copper, brass, and zinc. - Pressed parts, pins, screws, bolts, nuts, washers, springs, shafts. - Finished products or cast parts of machines, tools, and molds. - Black dyeing or repair of parts of assembled machines. - Black dyeing of large copper, brass, and zinc products that cannot fit into a tank. 【Characteristics】 Black dyeing can be done at room temperature by immersion or brush application. No special equipment is required. - The processing technique is extremely simple and does not require special equipment; a plastic bucket is sufficient for small quantities. - Even complex shapes of the items being treated can achieve a uniform coating. - Since the processing temperature is at room temperature, it does not damage the material. - Blackie C is odorless, non-flammable, and does not deteriorate even with long-term storage. - There is almost no change in dimensions before and after processing. - In addition to immersion, brush application and spraying methods are also available for processing.

Related Link - https://www.toolexpress.jp/item/bc-5-20/

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Copper, brass, and zinc room temperature black dye Tobikaba Black C 1L 5L 20L Tobi Chemical

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Black dyeing processing requires complete degreasing due to chemical reactions. (Note: Insufficient degreasing can cause dye unevenness.) For degreasing agents, there is trichloroethylene or a dedicated degreasing agent, Tobikamarit, a water-based degreasing cleaning agent made by Tobi Co. In the case of trichloroethylene degreasing agent, immerse the material to be dyed for 1 to 2 minutes, then remove it after sufficient degreasing, allow it to air dry, and wash with water. When using an alkaline degreasing agent, immerse in a detergent solution at 50 to 60°C for 4 to 5 minutes, then wash with water and neutralize in a 5 to 10% sulfuric acid solution (for about 1 minute) before washing with water. If there is rust or smut, immerse in a 10% hydrochloric acid solution (a solution diluted 2 to 3 times with water from industrial hydrochloric acid) for 1 to 2 minutes. ↓ [3. Black Dye Treatment] Dilute the room temperature black dye Tobik Blacky C with water (distilled water or tap water) at a ratio of 1:6 (7 times), and immerse the pre-treated material in this solution, stirring up and down several times, for 5 to 7 minutes. (Be careful, as using the concentrate directly or insufficient dilution can lead to poor fixation.) Since black "sludge" adheres to the surface, lightly wipe it with a sponge or cloth. Additionally, using Chemik's ChemQ Sludge Remover Spray will be even more effective.