The practical application and management of silane technology in coating process is the most widely used pretreatment process at present. However, due to the limitation of heavy metal ions such as zinc, nickel, manganese, phosphate and sodium nitrite in phosphating solution, and the high treatment temperature, the complex harmless transformation process of wastewater and waste residue, the application of silane technology is facing. With the increasing pressure of environmental protection. Silane treatment technology overcomes the above shortcomings and brings a revolutionary change in the field of coating pretreatment. The treatment effect of silane pretreatment technology has been comparable to that of zinc phosphating.
Since the first household appliances production line used silane technology 10 years ago, silane technology has moved from laboratory research stage to industrial production stage. By the end of 2011, hundreds of pretreatment production lines around the world have used silane technology, and dozens of production lines in China have used silane technology. The industry covers various fields, including household appliances, automotive parts, general industry, trucks, functional vehicles, cars and so on. The body painting has gradually entered the stage of vehicle production. At present, hundreds of thousands of cars have been off-line using silane as pretreatment technology in France, Spain, Brazil, Russia and other countries. China's first large-scale vehicle painting line will be put into operation in Wuhan by the end of 2012. Vehicle painting is the most anticorrosive and decorative coating. Silane technology can meet the requirements of car painting, and naturally can well meet the requirements of other industries.
Silane treatment technology and phosphating treatment have the same requirements, but also have some different requirements. In this paper, the specific requirements of process, equipment and management of silane technology in the practical application of painting are briefly introduced.