Electroplating has been throughout the national economy in various production and scientific fields. Especially in machinery manufacturing, national defense, communications, transportation, light industry and other industries have become an indispensable part. Electroplating is widely used in mechanical production to improve the wear resistance and corrosion resistance of various shaft, sleeve and other parts: it plays an increasingly important role in the use of various high-pressure gaskets for sealing corrosion protection, as well as various mechanical wear and repair dimensions of machining parts.
Electroplating is one of the basic processes in manufacturing industry. Due to its unique technological and economic advantages, electroplating is not only difficult to be completely replaced, but also makes new breakthroughs in the fields of electronics and steel. After the reform and opening up, the electroplating industry also entered the rapid development period, a large number of foreign manufacturers into China's Yangtze river delta, pearl river delta, bohai rim and other economically developed, convenient transportation areas, its basic process provider electroplating enterprises also followed.
The application hot spots of electroplating processing are transferred from the machinery, light industry and other industries to the electronics and steel industries, and from pure protective and decorative coating to functional coating, and from relative dispersion to gradual integration. And the kind that electroplate also is increasing ceaselessly, from the earliest gold plating, plating silver, plating copper to later plating nickel, galvanizing, plating hard chromium, plating tin.
According to relevant data, guangdong, jiangsu, zhejiang, Shanghai and other coastal developed cities have gathered most of the country's electroplating enterprises, but the national electroplating enterprises, 70% of the electroplating enterprises are small and medium-sized enterprises. The results show that nickel plating is the most common metal in mainland China, accounting for 24%. The proportion of zinc plating and chromium plating is equal, both slightly lower than nickel plating, both 17%; Copper and tin plating again, respectively 15% and 10%; Gold and silver precious metal plating accounted for 8% of the total.
The main reason is that the electroless nickel plating layer has high stability in the air, good luster, decorative, wear resistance, corrosion resistance and other characteristics, if combined with other materials electroplating can also improve the hardness and wear resistance, and even become a lubricating coating.
