Aluminum aluminum black agents at room temperature black liquor HF-636

HF-636 aluminum at room temperature blackening agent I. Applications: HF-636 aluminum at room temperature blackening agent for all kinds of aluminum extrusions, stampings, die-cast aluminum, aluminum foundry and all types of aluminum and aluminum alloy materials, room temperature operation, blackening effect of the fine, the aluminum surface treated to form a pure black appearance, widely used in various types of hardware accessories, machinery and equipment, gifts and other industries, but also prior to electrophoresis, spray, spray paint and other coating processes Processing supporting the use of products and enhance its coating layer binding, preventing the paint off the plastic layer. Second, the operational processes: aluminum → After degreasing activation washed clean → HF-636 black agents at room temperature Aluminum washed clean → → drying → closed or varnish to protect → drying three operating conditions: No. Item Specification Note 1 the ratio of 1: 2-5 watered colored slow low solubility, concentration of high color fast 2 Operating temperature Room temperature blackening temperature should be controlled in less than 30 degrees 3 processing time 1-5 minutes time to piece black black prevail for too long it will be easy to fall off 4 use solution soak 5 Use Plastic tank, PP / PVC groove Fourth, operation and maintenance: 1. operation, strict control of the working fluid temperature below 35 ℃, or likely to cause excessive aluminum parts corrosion, loose black film easy to fall off, the reaction liquid temperature rises due to black when black, and therefore deal with the number of workpieces to be controlled; 2. With black production progresses, the active ingredient gradually reduce solution should be based on production additional HF-636 aluminum blackening agent, the most appropriate way is to keep working concentration of more than 80% of the time slot concentration, ensure the normal black liquid, low concentration, black slow, the film is not dense; High concentrations of black fast, aluminum corrosive and loose black layer capacity off; 3 black film is dry before, the film adhesion, in general, be taken to prevent scratches, protective treatment should be done immediately after black, water-based sealant or spray transparent varnish; 4. This blackening agent is a strong alkaline solution, good labor protection, wear rubber gloves. V. Packaging and storage: 25 kg / barrel, valid for one year stored in a cool place.