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Aluminum alloy sacrificial anode

magnesium anode, zinc anode

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Aluminum alloy sacrifice anodes are used on the inside of the tanks

  • Author:Libo
  • Source:wwww.anchorwestinsurance.com
  • Date:2021-06-11
  • Click:0

Installation of aluminum anode for cathodic protection on tank inner wall


The first step is to examine the shape of the anode to be installed,


Such as size, size,


Shape gauge


Lattice,


Whether the structure design can meet the requirements of the whole cathodic protection system.


The anode surface is


Not good,


There is no damage or crack and other problems are the first to check clear.


The second


The next step is to connect the anode to the tank, or put the anode in the designed position,


The anode core is then soldered to a spot on the bottom or outside of the tank


Pick up.


In the third step, after the anode is installed, the storage tank will be sandblasted, derusting and inner coating


Spraying work,


All of this work may affect the anode,


So it is necessary to install good


Add some temporary protection to the anode,


To prevent sandblasting from affecting the use of the anode,


Can also be


To avoid paint contamination of the outer surface of the anode.


According to the medium of the inner wall of the storage tank, different cathodic protection can be selected


Type. If the chloride ion content in the medium is very low, such as in fresh water environment, can choose outside


Cathodic protection with current,


And in this case,


The current density can be adjusted appropriately


A low.


If it's an oil field sewage tank or a crude oil tank,


Because in this type of device


The chlorine ion content of sewage is relatively large, if possible, sewage can be kept flowing or more


Change,


In this case, impressed current cathodic protection can be considered.


Otherwise can't


To choose.


Because chlorine gas is produced when the anode reacts in impressed current cathodic protection,


this


There are gases that can be dissolved in water to form hydrochloric acid, which is very corrosive to metals.


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