Tungsten bars, rods, profiles and profiles plates, sheets, strip and foil of a deeper level of processing products export tariffs, so the 5% export tax rebate policy will continue. It can be understood, at least for now, for this type of tungsten production and exports, the country is still allowed, and even encouraged.
2013年8月2日星期五
Terms of its total electroplating wastewater, such as paper, printing, chemicals, pesticides and other small water pollution narrow. However, due to electroplating factory points widely distributed, highly toxic substances contained in the wastewater of many kinds, its harmfulness is great. Compliance electroplating wastewater untreated into rivers, ponds, into the ground, not only will harm the environment and can contaminate drinking water and industrial water. Chromium electroplating wastewater containing zinc, copper, cadmium, lead, nickel and other heavy metals and acid, alkali cyanide and other toxic debris great. Some also belong to the highly toxic carcinogenic and teratogenic substances must be handled carefully in order to avoid harm to people.
motorcycle plating parts care Raiders
A Molybdenum plate usually consists of thousands of large and small parts, plating parts is one of the important part. Motorcycle plating by plating metal plating base material can be divided into parts and plastic plating two kinds, such as the handlebars, fenders, rims, exhaust pipes, etc., are metal-plated base member; while scooters shell, instrument, trademark, logo belongs plastic plated vehicle base member. If the motorcycle plating intact the vehicle will look brilliant. Conversely, if the plating for rust, scratches, dents, then the vehicle is even ugly, and further affect the rider's image. Luxury imports, as some large displacement motorcycles, such as tungsten carbide inserts exhaust pipe corrosion, the car will be trouble (because these parts are very difficult to buy).
A plating layer classification and characteristics
Electroplating layer classification and characteristics: the plating layer can be divided by the use of a protective function, decorative and functional three categories.
1, the protective coating: As the name implies, this coating is used to prevent the corrosion products and parts, the motorcycle production process usually galvanized to protect the steel main parts.
2, protective - decorative coating: This coating in motorcycle production process most widely used manufacturing processes complex than the protective coating, at least two or more plated, and some more. If the motorcycle fenders, rims, croissants handlebars, exhaust pipes, etc.; This coating looks good apart from outside, but also play the role of preventing corrosion of the main parts.
3, the functional coating: This coating is usually applied to shaft parts, engine cylinder and piston ring friction surfaces, in general, chrome ways to increase the wear resistance of the main parts.
4, other coating: the production of tires, in order to increase the pressing between the wire and the rubber of the adhesive, the general approach is copper zinc alloy on the wire. Depending on the application, different metal plating is commonly used metals are zinc, copper, silver, lead, chromium, nickel, black chrome, black nickel.
Second, plating parts protection measures
Most corrosive plating solution, the organic acid is stable to long-term luster. However, the following situations will corrode the plating layer, need to pay attention and to take measures to protect it.
1, should prevent salt, hydrochloric acid, bittern and other substances. Because the coating is easy to dissolve in the above-mentioned substances, so avoid with 84 disinfectant, bleach, toilet Qing substances.
2, the motorcycle should not be stored in a gas, pellet heaters, soot BBQ place. This is because the carbon monoxide (CO) generated gray-black mesh coating will crack and corrosion.
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