Steel lined plastic chemical anti-corrosion electroplating tank

electroplate(Electroplating)It is the process of coating a thin layer of other metals or alloys on certain metal surfaces using the principle of electrolysis. It is a process of using electrolysis to attach a layer of metal film to the surface of metal or other material parts, thereby preventing corrosion, improving wear resistance, conductivity, reflectivity, and enhancing aesthetics.

During electroplating, the plated metal or other insoluble material serves as the anode, and the workpiece to be plated serves as the cathode. The cations of the plated metal are reduced on the surface of the workpiece to form a coating. To eliminate the interference of other cations and make the coating uniform and firm, a solution containing the metal cations of the coating needs to be used as the plating solution to maintain the concentration of the metal cations in the coating unchanged. The purpose of electroplating is to deposit a metal coating on the substrate, changing the surface properties or dimensions of the substrate. Electroplating can enhance the corrosion resistance of metals(Coated metals are often made of corrosion-resistant metals)Increase hardness, prevent wear, improve conductivity, lubricity, heat resistance, and surface aesthetics.

The technology of using electrolysis to deposit metal coatings with good adhesion but different properties from the substrate material on mechanical products. Electroplated layers are more uniform than hot-dip coatings and are generally thinner, ranging from a few micrometers to several tens of micrometers. Through electroplating, decorative protective and various functional surface layers can be obtained on mechanical products, and worn and machined workpieces can also be repaired.

In addition, it has different functions according to various electroplating needs. For example:

1.Copper plating: used as a base to enhance the adhesion and corrosion resistance of the plating layer. Copper is prone to oxidation, and after oxidation, copper green no longer conducts electricity, so copper plated products must be protected with copper[1]）

2.Nickel plating: used as a base or for appearance to enhance corrosion resistance and wear resistance,(Among them, chemical nickel has a higher wear resistance than chrome plating in modern technology)(Note that many electronic products nowadays, such asDINHead,NHead, no longer using nickel as a base, mainly due to the magnetic properties of nickel, which can affect the passive intermodulation in electrical performance

3.Gold plating: improves conductive contact impedance and enhances signal transmission.(Gold is the most stable and expensive.)

4.Palladium nickel plating: improves conductive contact impedance, enhances signal transmission, and has higher wear resistance than gold.

5.Tin plated lead: enhances welding ability and is quickly replaced by other alternatives(Due to lead content, most of them have been changed to bright tin plating and matte tin plating).

6.Silver plating: improves conductive contact impedance and enhances signal transmission.(Silver has the best performance, is easy to oxidize, and also conducts electricity after oxidation)

Electroplating is a method of laying a layer of metal on a conductive material using the principle of electrolysis.

In addition to conductive materials, electroplating can also be used on specially treated plastics.

The basic process of electroplating is as follows:

Connect the plated metal to the anode

The object to be electroplated is connected to the cathode

The anode and cathode are connected by an electrolyte solution composed of positive ions of the metal coated on them

After being powered by direct current, the metal at the anode will oxidize (lose electrons), while the positive ions in the solution will be reduced (gain electrons) at the cathode to form atoms and accumulate on the surface of the cathode.

The aesthetics of the electroplated object are related to the magnitude of the current. The smaller the current, the more beautiful the object will be; On the contrary, some uneven shapes may appear.

The main uses of electroplating include preventing metal oxidation(Like rust)And decorate it. Many coins also have electroplated outer layers.

The wastewater generated by electroplating (such as ineffective electrolytes) is an important source of water pollution. Electroplating technology has been widely used in the process of semiconductor and microelectronic component lead frames.

The electroplating tank is the most basic supporting equipment in electroplating equipment.

Material Science:There is a titanium electroplating tank (resistant to acid and alkali solution corrosion)PPMaterialPVCMaterialPVDFThe tank body is made of various materials such as material, fiberglass tank material, stainless steel tank material, granite masonry material, polytetrafluoroethylene (PTFE) material (which can be used in any acid), etc.

Electroplating tanks are used to install solutions for galvanizing, copper plating, nickel plating, gold plating, etc. The cathodic mobile electroplating tank consists of a steel tank lined with soft polyvinyl chloride plastic, a conductive device, a steam heating tube, and a cathodic mobile device. The tank body can also be made of steel frame lined with rigid polyvinyl chloride plastic, and the choice of tank body structure depends on factors such as the properties and temperature of the electroplating tank solution. It consists of an electric motor, a reducer, an eccentric disc, a connecting rod, and a pole support roller.

The main components of the tank include the tank body, solution heating and cooling device, conductive device, and stirring device. Sometimes the tank directly holds solutions such as hot water tanks,Sometimes the basic requirements for the substrate or skeleton used as a lining, such as a steel groove, are non leakage and a certain degree of rigidity and strength to avoid damage to the lining layer due to excessive deformation of the groove body; The bottom of the steel trough should be above the ground100㎜~120Mm to prevent severe corrosion.

Edit the plating tank size settings in this paragraph

The size of the plating tank usually refers to the volume of electrolyte contained in the inner cavity of the plating tank(L)That is, the length of the plating tank cavity x the width of the cavity x the depth of the electrolyte. Generally, the selection can be calculated based on the amount of electroplating processing or existing DC power supply equipment. Choosing the appropriate size of the electroplating tank is of great significance for developing growth plans, estimating production, and ensuring electroplating quality.

When determining the size of the electroplating tank, the following must be met3Basic conditions:

① Meet the electroplating requirements of the processed parts, and if the parts can be completely submerged, all surfaces need to be electroplated;

② Prevent electrolyte from overheating;

③ Can maintain a certain level of stability in the electrolyte composition during the electroplating production cycle.

Of course, the overall coordination of the production line and the rationality of the layout of the electroplating workshop should also be considered.

Edit this paragraph on the preparation of electroplating tanks

The material used to make the plating tank lining is determined by the properties of the electrolyte contained in it(Corrosion resistance, temperature resistance, etc)The commonly used ones are polyvinyl chloride and polypropylene(soft)Plates, titanium plates, lead plates, ceramics, etc.

Electroplating tanks are generally rectangular in shape, with a width of600～1000 mmThe depth is800～1200 mmMore suitable. Electroplating tanks for extra large or special requirements parts will be made separately.