Temperature blackening agent aluminum die-cast aluminum black liquor HF-637

HF-637 black agents at a temperature of aluminum, product applications: HF-637 temperature blackening agent suitable for aluminum die-cast aluminum, aluminum foundry and casting aluminum products blackened, dark shiny black film is compact into effect, black solid film does not fade, smudge-free surface was treated with strong corrosion resistance, stable solution performance, long service life, black and low cost, but also prior to electrophoresis, spray, spray paint and other painting process handling supporting the use of the product, after-treatment coating layer to enhance its combined ratio, widely used in various types of hardware accessories, machinery and equipment, auto parts and other industries dyed black aluminum. Second, the product advantages: 1, the product is a single preparation, easy to use, simple to manage, low production costs; 2, the product operating process is simple, black film does not fade even, free from dust, corrosion resistance. Third, the operation flow: → HF-601 aluminum aluminum cleaner soak washed clean → → activation → washed clean → HF-637 aluminum temperature blackening agent → → washed clean on the packaging or drying after drying varnish can Note: activation with 5% caustic soda (sodium hydroxide) watered, soak for 2-5 minutes at room temperature activated surface, washed clean and then soaked black liquor, in order to enhance the uniformity and black black adhesion, eliminating the need for less demanding This channel technology. Fourth, the operating instructions: No. Description Use Notes 1 HF-637 aluminum temperature blackening agent watered 10-20% lower color slow solubility, concentration of high color fast 2 Operating temperature 60-903 processing time 1- 10 minutes of time to piece black black prevail 4 5 use solvents to use immersion thermostat Stainless steel tank, glass beaker V. operation and maintenance: 1, according to the ratio of the concentration of black liquor configured into the prepared container which will the liquid was heated to 60-90 degrees can be, high temperature black speed, low temperature black slow; electric heating equipment selection, or titanium heating pipe, stainless steel heating pipe; 2, aluminum washing after degreasing cleaning activation Clean and then immersed in black liquor, in order to observe the whole piece black prevail, when the work issued to insufficient black black soaking time may be extended until the whole piece black prevail, then washed clean out, washed with water please drying aluminum to prevent watermarks; 3, with the use of long time Blackening, solutions of the active ingredient will be reduced, should be timely to add HF-367 temperature liquid aluminum black agents to maintain slotted PH: 4- 5. bath overall turbidity, and after additional black when it is not recommended to replace the bath; 4, the product is a weak acid solution, and the heating operation, wear rubber gloves when operating, operating environment to a well-ventilated, Long-term operation of the proposed wear masks. VI, packaging and storage: 25 kg / barrel, 1-year store it in a cool place.