Plastic plating-A brief description of the principles and requirements for the selection of substrate coating.
Huizhou Boluo Tenglong Technology Co., Ltd. serves you wholeheartedly! Mainly engaged in plastic hydroelectroplating processing, with plastic injection molding processing, mold processing and so on!
Many items in life, such as faucets, kettles, doors and windows, and even car parts, circuit boards and other items, they are more or less using electroplating technology.
In addition to increasing the beauty of the object surface, the electroplating process can also change the surface property or size of the object because of the metal coating on the surface substrate, so that it can achieve things that can not be done by its own material, such as giving the article anti-rust and anti-wear functions. or improve electrical conductivity, lubrication, heat resistance, weather resistance and strength, etc.
Therefore, electroplating is widely used as a surface treatment process, but not every kind of substrate and coating can be matched with each other, and the selection of substrate and coating is skillful. Each kind of coating has its own unique properties and uses. In addition to the application properties of the coating, the processing technology and cost should also be considered when selecting the coating.
Several requirements for coating selection:
1. Working environment and requirements of parts.
The electroplating of most parts requires good protection, and environmental factors are the fundamental conditions for the corrosion of metal materials, such as atmospheric environment (industrial atmosphere, marine atmosphere), working temperature, humidity, medium properties, mechanical conditions, etc., so environmental factors are the first consideration in the selection of coating. At the same time, specific functions such as electrical and magnetic properties should also be considered.
2. Types and properties of parts.
The type, physical and chemical properties of matrix materials have a great influence on the type and structure of the coating, such as zinc coating, anodic coating and simple structure should be used in the protective coating of iron and steel materials in general atmosphere. Because copper, nickel and chromium are negative coatings relative to iron and steel, the coating should have smaller porosity and appropriate thickness, and the corresponding pretreatment process should be selected according to the types of materials in order to obtain the coating with good collective bonding.
3. Tolerances for the structure, shape and dimensions of parts.
For parts with complex structure or with deep holes, the plating solution with good covering ability and dispersion ability should be selected, otherwise the coating can not be plated on the surface of the depression or deep hole, or the coating is uneven. In general, it is difficult to get a complete coating on the inner wall of finer tubular parts, so this problem can be well solved by electroless plating. For precision parts with small dimensional tolerance and strict requirements, thin layers with good performance must be used.
4. properties and service life of the coating.
The coating can change the surface properties of the matrix material and prolong the service life of the parts, but it is not permanent. Especially the protective coating still needs to be repaired or replaced after a certain period of time. The properties and life of the coating should be in line with the specific requirements of the parts to meet the expected purpose, so that the parts can work safely and reliably during the service life.
The properties of different coatings have both similarities and differences, so when electroplating products are processed, the appropriate coating should be selected according to different working conditions and environment, combined with the cost of electroplating processing.
Hot Tags: plastic plating-a brief description of the principles and requirements for the selection of substrate coating, China, suppliers, manufacturers, factory, custom, wholesale, buy, made in China
