Baoji Dynamic Trading Co., Ltd

Q&A on Cathodic Protection Technology

Mar 17, 2023

1) Why is electrical insulation required?

In cathodic protection technology, it is required that the structure to be protected needs to be electrically insulated. Ruthenium Anode Company believes that the main reason is that if there is no insulation, the protection current will be lost to the unprotected metal structure, and the designed current demand may be insufficient. The protection effect Not ideal, in addition, there may be interference from stray currents.

2) What is the function of the test pile?

The function of the test pile is mainly to detect the cathodic protection effect and operating parameters. According to different functions, there are potential test piles, current test piles, and protection effect test piece test piles.

3) What are the components of the sacrificial anode cathodic protection system?

In the soil, the sacrificial anode cathodic protection system mainly consists of sacrificial anodes, filling materials, cloth bags, patches, cables, and test piles. Sacrificial anodes are welded directly to the protected structure in an aqueous environment.

4) What are the main sacrificial anodes?

Sacrificial anodes mainly include magnesium alloy sacrificial anodes, aluminum alloy sacrificial anodes, and zinc alloy sacrificial anodes. Magnesium alloy sacrificial anodes are mainly used in high resistivity soil environments. Aluminum alloys and zinc alloys are mainly used in water environment media. Zinc alloys can also be used for rings with soil resistivity less than 5Ω?m.

5) What is a forced current cathodic protection system?

The forced current cathodic protection system is also called the impressed current system. A DC power supply is connected in series in the circuit, and the DC power is passed to the metal to be protected with the aid of the auxiliary anode, so that the metal to be protected becomes cathodic for protection.

6) How many types of auxiliary anodes are there?

Auxiliary anodes are classified according to the medium. There are scrap steel, ferrosilicon, graphite, mixed oxide anodes, and flexible anodes in the soil. In the aqueous medium, there are mixed oxide anodes, ferrosilicon anodes, lead anodes, etc.

7) What is sacrificial anode cathodic protection system?

The sacrificial anode method is to use a metal or alloy with a potential that is more negative than the metal to be protected to be electrically connected to the metal to be protected, and rely on the current generated by the continuous corrosion and dissolution of the metal with a relatively negative potential to protect other metals. method.

8) What are the components of the forced current cathodic protection system?

The forced current cathodic protection system is mainly composed of power supply, control cabinet, auxiliary anode, coke (carbon) filler, cable, control reference electrode, potential test pile, current test pile, protection effect test piece, electrical insulation device, electrical insulation protection device .

9) What is the function of the power supply?

The function of the power supply is to provide continuous current to the cathodic protection system. Power supplies mainly include constant current, constant voltage rectifiers, and potentiostats.

10) What are the main types of power supply?

In terms of rectification forms, there are mainly silicon controlled rectifiers, magnetic saturation, and digitally controlled high-frequency switches. Thyristors and magnetic saturation potentiostats have large volumes, large ripple coefficients, poor control accuracy, low efficiency (less than 70%) and are difficult to realize digitalization. In addition to the above-mentioned shortcomings of the magnetic saturation potentiostat, the output below 20% of the rated power cannot be controlled. The CNC high-frequency switch potentiostat has small volume, small ripple coefficient, high control precision and high efficiency (above 90%).

11) What is the role of the auxiliary anode introduced by Ruthenium Anode Company?

The role of the auxiliary anode is to form an electrical circuit with the medium (such as soil, water), power supply, and pipeline through its own dissolution.

12) Who control the reference electrode?

Control reference electrodes mainly include long-life saturated copper sulfate reference electrode, high-purity zinc reference electrode, silver/silver chloride reference electrode, and molybdenum dioxide reference electrode. Saturated copper sulfate reference electrode and high-purity zinc reference electrode can be used in soil, and high-purity zinc reference electrode and silver/silver chloride reference electrode can be used in water medium. Molybdenum dioxide reference electrodes are mainly used in concrete. The lifetime of the saturated sulfuric acid reference electrode is generally less than 10 years. Other reference electrodes can be designed according to the lifetime.

 

Baoji JM-TITANIUM—Professional anode design and manufacturer

Over the years, we have been specialized in anode research and development, production and manufacturing, and our products are exported to many countries around the world. Various series of anodes can be designed and produced according to the actual environmental parameters of different users. You are welcome to visit and negotiate.


Nicole
Company: Baoji Jimiyun Dynamic Co., Ltd
Cuntry:China
Add:Baoti road,Jintai,Baoji city,Shaanxi,China
Cel:+86 13369210920
Gmail:nicole@jmyunti.com
Website:www.jm-titanium.com