Magnesium Alloy Sacrificial Anode Protection

Product Description

Magnesium Alloy Sacrificial Anode
 

1 The Executive standard
GB/T 17731-2008 Magnesium alloy sacrificial anode
SY/T0019-97 Design Code for Sacrificial Anode Protection of Buried Steel Pipelines

2 The main performance
It has a large amount of production per unit mass and high potential; it is an ideal sacrificial anode material.

3 The scope of application
It is suitable for corrosion protection of oil, gas, water supply and drainage pipelines, reservoir gates and buried pipelines in fresh water.

4 The product features
The magnesium alloy produced by our company is produced with high-quality raw materials. The anode potential is negative and the electricity generated per unit mass is large. It is an ideal sacrificial anode material. Suitable for anode protection of metal structures in soil, fresh water and sea water, such as oil and gas pipelines, storage tanks, hot water exchangers, condensers, etc.

Magnesium alloy sacrificial anodes are produced in accordance with the national standard GB/T 17731-2004 (magnesium alloy sacrificial anodes). The anodes used in pipelines also meet SY/T0019-97 (design code for sacrificial anode protection for buried steel pipelines).

The product has the following characteristics:
1) The specific gravity is small and the potential is relatively negative
2) The driving voltage to the iron is high, the current efficiency is low,
3) Specially suitable for high resistivity medium. (For resistivity greater than 100Ω.m, it is recommended to use a ribbon magnesium anode)

5 The precautions for use
1) Avoid collision with steel structure;
2) When used in the soil, it should be buried in a low-lying wet place
3) When used in the soil, the anode must be buried in a packing bag;
4) After the anode is placed in the earth pit in the dry soil area, the filling material should be fully soaked with water before the soil can be backfilled to prevent the anode from not being fully conductive.

6 The Chemical Composition

Alloy	Chemical Composition%
	Alloy element				Impurity elements are not greater than
	Al	Zn	Mn	Mg	Fe	Cu	Ni	Si	Ca
MGAZ63B	5.3-6.7	2.5-3.5	0.15-0.6	remainder	0.003	0.01	0.001	0.08	--
MGAZ31B	2.5-3.5	0.60-1.4	0.2-1.0	remainder	0.003	0.01	0.001	0.08	0.04
MGM1C	≤0.01	--	0.50-1.4	remainder	0.01	0.01	0.001	0.05	--

7 The Electrochemical performance

Performance Type  Index	Open circuit potential --V,Cu/Cu SO4	Closed circuit potential --V,Cu/Cu SO4	Actual capacity H/kg	Current efficiency %	Dissolution status
MGAZ63B	1.57-1.67	1.52-1.57	≥1210	≥55	Corrosion products are easy to fall off, and the surface dissolves evenly
MGAZ31B	1.57-1.67	1.47-1.57	≥1210	≥55
MGM1C	1.77-1.82	1.64-1.69	≥1100	≥50

8 Buried pipelines, outer walls of storage tanks and underground metal structures commonly used sacrificial anode models and specifications
 

Type	Size	Weight KG
	Length X (Upper bottom+Down Bottom) X Height mm
MG-2	350 x (72+52) x 52	2±0.1
MG-4	350 x (95+75) x 75	4±0.2
MG-8	700 x (95+75) x 75	8±0.2
MG-11	700 x (110+90) x 88	11±0.2
MG-14	700 x (120+100) x 102	14±0.2
MG-22	700 x (150+130) x 125	22±0.2

9 The Specification of Bracelet Magnesium Alloy Sacrificial Anode

Type	Size	Weight KG
	Length X OD X ID X Thickness X Anode spacing mm
MD-114	260 x 185 x 115 x 60	5.5
MD-59	260 x 230 x 160 x 80	7.0
MD-219	260 x 290 x 220 x 115	9.0
MD-273	260 x 344 x 274 x 140	11.0
MD-323	260 x 395 x 325 x 170	13.0

Note: The anodeproduct can be assembled and welded according to customer requirements