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Anticor AKOR Device for electrochemical protection of the car body from corrosion

What is needed for the device: The device of electrochemical protection "Akor" allows to forget about expensive anticorrosion treatment of a body. The installation of the device takes only 30 minutes, so you will forever forget about rust. The new cars prevent the formation of corrosion, and on used vehicles stops the spread of the corrosion that has already formed. The efficiency of the device is confirmed by the results of independent studies and long-term operational experience.

Background: Cathodic protection was first described by Sir Humphry Davy in a series of reports submitted to the Royal Society for the Development of Knowledge about Nature in 1824. After lengthy tests, cathodic protection was first used in 1824 on the HMS Samarang. Anodic iron protectors were installed on the copper hull of the hull below the waterline, significantly reducing the rate of copper corrosion. Copper, corroding, liberates copper ions, which have antifouling effect. Due to excessive fouling of the hull and a decrease in the efficiency of the ship, the Royal Navy of Great Britain decided to abandon the tread protection in order to obtain the benefits of antifouling effect due to copper corrosion.

Operating principle

The process of corrosion resembles the operation of a galvanic cell, since steel is basically an alloy of iron and carbon, that is, substances with different electrode potentials. When an electrolyte of such an alloy hits (water, mud from the road with salt content), an electrochemical reaction begins between the iron and carbon molecules, accompanied by dissolution of the anode (iron) and its transition to hydrates, and then to the oxides.

The principle of the Akor device is based on the creation of a galvanic pair between the car body and additional electrodes.

Shift of the potential of the protected metal object is realized with the help of an external stabilized DC power source.

There is a method of cathodic protection without an external power source, using a tread anode made of more electronegative metal, relative to the body of the car. In this case, the surface of the body becomes equipotential and in all its sections only the cathodic process proceeds. The corrosion-causing anode process is transferred to auxiliary electrodes. The disadvantage of the method of cathodic protection without an external current source is: less efficiency, less range, it is necessary to clean the car body.

The principle of the Akor device
Fig. 1. Protector electrode after a long operation and location on the hull of the vessel.

ELECTROCHEMICAL CATHODE PROTECTION of metals from corrosion, is based on the dependence of the corrosion rate on the electrode potential of the metal. In fact, electrochemical protection includes cathodic protection, in which the metal potential is specifically shifted from the active dissolution area to the more negative region relative to the corrosion potential.

The metal potential is shifted by means of an external DC source (cathodic protection station) or a connection with another metal more electronegative for its electrode potential (the so-called protector anode). In this case, the surface of the protected sample (structural part) becomes equipotential, and only cathode processes occur in all its sections, and the anode ones, which cause corrosion, are transferred to auxiliary electrodes.

Cathodic protection is widely used to protect against marine corrosion. Civil vessels are protected with A1, Mg or Zn-tread anodes, which are placed along the hull and near the screws and rudders. Cathodic protection stations are used in cases where protection is required to be deactivated in order to eliminate electrical interference. field of the ship, while the potential is usually controlled by silver chloride electrodes. There are automatic cathodic protection stations located on the ship or on the shore (when parking or repairing). The anodes are usually made of platinized titanium, linear or circular, with near-anadron non-conductive screens to improve the distribution of potential and current density along the hull.

Particularly important is the use of cathodic protection for stationary oil and gas facilities, pipelines and storage facilities for them on the continental shelf. Such structures can not be introduced into the dry dock to restore the protective coating, therefore electrochemical protection is the main method of preventing corrosion. The offshore oilfield tower, as a rule, is equipped in its underwater part with protector anodes (up to 10 tons or more of the tread alloys are located on one tower).

Methods of cathodic protection of bodies of transport equipment (cars) are developed.

Protector anodes are used to protect separ. decorative elements of the body, while electronic devices provide a constant or pulsed current. To increase the protection zone, it is necessary to place the anodes in the room. corrosive points or use electrically conductive paint. The device generates currents for controlling the cathode electrodes (included in the kit).

Installation and Specifications

Indication of electrode closure on the housing
The radius of action of the electrode, M 0.4
Stabilized device current, mA 15
Electrode service life, years 5

Electrodes are installed using epoxy glue to places where corrosion is most likely.

At installation it is necessary to remember that:

  • Protective electrodes are installed only in places protected by paint and varnish. There should be no contact with the mass
  • for gluing electrodes, you can only use epoxy adhesive or putty on its basis
  • The outer side of the protective electrodes can not be covered with mastic, paint, glue or other electrical insulation coating
    • The electronic unit is installed near the battery, the red wire is connected to the battery terminal "+". That is, the electronic unit remains on even when the general electrical equipment of the vehicle is switched off. The blue wire is connected to one or two electrodes.

      In general, the device consumes no more than a car clock and guarantees a lasting effective operation even with a very discharged battery.

      We recommend installing the electrodes in the following places:

      • 1 - the front lower part of the rear wing and the wheel arch on the joint with the wing;
      • 2 - places of fastening of headlights and sidelights;
      • 3 - the cavities behind the shields-amplifiers of the front wings;
      • 4 - internal surfaces of doors and thresholds;
      • 5 - bottom.