What are the hazards of illegal plastic electroplating?

First, air pollution: strong acids, alkalis, salts, organic solvents and other chemicals should be used in the production of plastic electroplating, which will emit a lot of toxic and harmful gases during the operation. For example, hydrofluoric acid smokes in the air, and its vapor is highly corrosive and toxic; When electroplating chromium, it will emit a lot of chromium mist. Chromium compounds can cause skin ulcers, anemia, nephritis, neuritis and other diseases, and have the effect of carcinogenesis and inducing gene mutation.

The second is water pollution: the main source of zinc in waste water from plastic electroplating and metal processing industries is the dragging solution of electroplating or pickling. The pollutants are transferred to the rinsing water through the metal rinsing process. The pickling process includes immersing metal (zinc or copper) in strong acid to remove surface oxides, and then immersing it in brightener containing strong chromic acid for long face treatment. The wastewater contains a lot of hydrochloric acid, zinc, copper and other heavy metal ions and organic brighteners, which are highly toxic. Some of them also contain carcinogenic, teratogenic and mutagenic substances, which are extremely harmful to human beings.

Third, dust hazard: most hardware workpieces must be polished and mechanically polished before electroplating; In addition, in order to remove the slag, molding sand, oxide skin and other impurities on the surface of castings, forgings or parts after heat treatment, sand blasting is also required. These operations will produce a lot of dust that may contain silicon, chromium, aluminum, iron, copper and linen. Fourth, there is a risk of explosion: organic solvents are often used to degrease and degrease the workpieces in the production of plastic electroplating. Common organic solvents include gasoline, kerosene, acetone, benzene, trichloroethylene and carbon tetrachloride; In addition, the paint remover is used to remove the old coating, and the varnish (sealing) paint is used to seal the coating. The paint remover contains a lot of dichloromethane and other organic solvents, and the varnish (sealing) paint also contains a variety of organic solvents Gasoline, fire oil, benzene and other organic solvents have very low flash points and are very volatile in the air. When the mixture of vapor and air reaches the lower explosion limit, fire and explosion will occur in case of spark and other ignition sources.