The quality of electroplating solution is an important factor affecting the coating thickness, and the judgment of its quality is multifaceted: 1. Dispersion ability: when other conditions are the same, the better the dispersion ability, the more uniform the coating thickness distribution; 2. Deep plating ability: deep plating ability refers to the ability of the plating solution to deposit coatings on the deep recesses of complex parts, also known as coverage ability. The higher the depth capability, the more uniform the coating. In addition, it is also related to many factors, such as metal distribution: coating thickness is related to the change of cathodic current efficiency with cathodic current density; Uneven mass transfer: the mass transfer supplement speed of main salt metal ions in the middle of the plate after consumption is lower than the supplement speed of surrounding main salt metal ions, the concentration polarization is large, and the coating in the middle is often thin and the brightness is poor.
Electroplating equipment After being put into use, it is necessary to strengthen the daily management of electroplating equipment. Automatic electroplating line manufacturer The management of electroplating equipment can be divided into three parts: electroplating tank, rectifier power supply and auxiliary equipment. Shandong Electroplating equipment manufacturer Let's introduce them separately.
Management of electroplating tank: as electroplating tank is still non-standard equipment, its specification and size have great flexibility. As small as beakers and as large as pools can be used as plating tanks, there is no unified standard, which is unfavorable for strengthening electroplating management.
Rectification power supply: the power supply equipment is not only simple, but also has great flexibility. Of course, the formal electroplating processing will use a more reliable silicon rectification device. The main indicator of the electroplating equipment is the size and adjustable range of the current value, and the voltage changes from 0 to 15V with the electrorheological process.
Auxiliary equipment: auxiliary equipment includes heating or cooling equipment, cathode moving or stirring equipment, plating solution circulation or filtering equipment, Manufacturer of electroplating wastewater treatment equipment And the necessary accessories of the plating tank, such as electrode rod, electrode conductor, anode and anode basket, electroplating hanger, etc.
Electrogalvanizing is widely used as protective coating for steel parts and structures. In recent years, the use of hot-dip galvanized surface has a very strong anti-corrosion ability, but its price is relatively high. Cadmium coating is commonly used for parts in aviation, navigation and electronic industry. In marine atmosphere and sea water, the protective performance of cadmium coating is better. Electroplated copper shall be used for the protection of iron and steel workpieces - the bottom or middle layer of decorative coating to improve the bonding force between the substrate and the surface or middle layer and the coating protection function. Chemical equipment, microelectronic devices, some medical devices and household articles commonly use nickel plating as a protective layer. Chrome plated products include: chrome plated abrasives, high-precision cylinders, chrome plated cars, chrome plated gun barrels and black chrome plated collectors, etc. Tin plating is often used in food packaging. Plastic electroplating is used for car logo, metal building emblem, MP3, etc. In addition, there are composite coatings, which are used in various fields.