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    Knowledge analysis of metal plating technology

    • Classification:News
    • Auth:
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    • Release time:2019-03-09
    • Visits:31

    Knowledge analysis of metal plating technology

    [Summary]We all know that the modern application of electroplating technology is very extensive, electroplating can increase the hardness of the product, prevent wear, improve the conductivity, lubrication, heat resistance, and surface appearance, etc..

    • Classification:News
    • Auth:
    • Source:
    • Release time:2019-03-09
    • Visits:31
    Information

    We all know that the modern application of electroplating technology is very extensive, electroplating can increase the hardness of the product, prevent wear, improve the conductivity, lubrication, heat resistance, and surface appearance, etc.. A lot of buttons (including metal buttons, plastic buttons, etc.), belt buckle and part of the jewelry, etc. all need to plating process, small make up here to share with you the metal button plating technology knowledge.

     

    Plating (electroplating) is the use of electrolysis principle on some metal surface plating on a thin layer of other metal or alloy process, is the use of electrolysis to make metal or other material parts of the surface of a layer of metal film to prevent corrosion, improve resistance to wear, conductivity, reflection and enhance the appearance of the role, such as metal buttons plating.

     

    Electroplating principle: in the plating bath containing plating bath, after cleaning and special treatment to be plated as the cathode, with the coating metal anode, the poles are respectively connected with the cathode and the positive electrode of the DC power. Electroplating solution containing plating metal coating compound, composed of a water solution of conductive salts, buffers, pH regulator and additive. After power, the metal ion in the plating bath is moved to the cathode to form a coating on the potential difference. Metal ions in the metal forming metal ions into the plating solution to maintain the concentration of metal ion plated. In some cases, such as chromium plating, is the use of lead, lead antimony alloy made of insoluble anode, it only played the role of electron, conduction current. The chromium ion concentration in the electrolyte must be maintained by a periodic solution to the chromium compound. The quality of the anode material, the composition of the plating bath, the temperature, the current density, the electric time, the stirring intensity, the precipitation of the impurity and the power source are all affected by the quality of the coating.

     

    Button plating classification: buttons can be divided into the plating, rolling, rolling, continuous plating and brush plating, etc., mainly with the size of the plating parts, bulk and requirements.

     

    Four stages of development of electroplating power supply

     

    (1) the power consumption, low efficiency and high noise of the DC generator stage have been eliminated.

     

    (2) the silicon rectifying stage is a new generation product of the direct current generator, the technology is very mature, but the efficiency is low, the volume is big, the control is not convenient. At present, there are still many companies use this kind of electroplating power supply.

     

    (3) the main power supply of the silicon rectifying power supply is the main power supply of the silicon controlled rectifier, which has the advantages of high efficiency, small size, convenient adjustment and so on. With the development of the core device, SCR technology, the power technology is becoming more mature and has been widely used.

     

    (4) the transistor switching power supply, which is the most advanced electroplating power supply, is the most advanced electroplating power supply, which is a revolution of the electroplating power supply. This power supply has the advantages of small size, high efficiency, excellent performance, stability of the ripple coefficient, and not easy to be influenced by the output current. Pulse electroplating power supply is the direction of development, has begun to use indiscriminately in the enterprise.

     

    Button plating process is as follows

     

    1 the coating metal to the anode

     

    2 the plated parts are connected to the cathode.

     

    3 the positive ion of the positive ion of the metal which is plated with the metal is connected with the electrolyte solution.

     

    4 to the DC power supply, the anode metal will be oxidized (to lose electrons), the positive ion in the solution is to be reduced (to get electrons) into atoms and accumulate in the negative surface.

     

    After plating, the beauty of the object is related to the size of the current, the smaller the current, the more beautiful the object will be, and vice versa.

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