Az31 Magnesium Strip Anode ASTM 97-98
Magnesium Ribbon Anode Cathodic Protection For The Inner Wall Of Buried Pipeline Casings
Introduction:
In the case of using steel pipelines, local cathodic protection is generally used to protect pipelines from corrosion. The specific practice in the design process is to wrap magnesium anode strips or zinc anode strips or install bracelet anodes on the main pipe in the casing, and local cathodic protection with wound magnesium anode strips is usually recommended.
The amount of local cathodic protection sacrificial anode in the casing can be designed and calculated according to the protection area to obtain the required quality of the anode.
Specification:
|
Section (inch) |
3/8 x 3/4 + 0.015(1/8" corner) |
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|
Diameter of core (inch) |
0.135 |
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|
Core eccentric (inch) |
<1/16 |
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|
Weight (lbs/feet) |
0.243 |
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|
Standard coil length (feet) |
1000 |
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Coil weight (lbs) |
243 (110kgs) |
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Chemical composition %:
| Mg | Mn | Zn | Al | Cu | Ni | Fe | Si | Impurities | |
| (max) | (max) | (max) | (max) | (max) | each | total | |||
| Balance | 0.50-1.3 | / | 0.01 | 0.02 | 0.001 | 0.03 | / | 0.05 | 0.3 |
| Balance | 0.20min | 0.7-1.3 | 2.5-3.5 | 0.01 | 0.001 | 0.002 | 0.02 | 0.05 | 0.3 |
The electrochemical performance of :
|
Open voltage (-V) |
Closed voltage (-V) |
Actual capacity (A.h/kg) |
Efficiency (%) |
| 1.50-1.55 | 1.45-1.50 | 1230min |
55min |
Advantages:
From raw materials - semi-continuous magnesium alloy rods - extrusion - forming, the factory is independently produced and the internal composition is controllable. Extruded ribbon magnesium anode, very flexible. Due to the higher area-to-weight ratio of the magnesium ribbon, it can provide higher current output than other anodes.
Applications:
Magnesium strip is suitable for cathodic protection of high resistivity soil, fresh water and special parts with narrow space. Such as long-distance pipelines in soil or fresh water, inner walls of buried pipeline casings, large storage tanks and pipeline networks, and underground cables.
Photos:
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