Zinc Anode for Seawater Cooling System

Zinc Anode for Seawater Cooling System

Zinc alloy sacrificial anode is used for the metal anti-corrosion cathodic protection of the ships, water ballast tanks, mechanical equipment, marine engineering and port facilities, drilling platform, wharf, seawater condenser, pump in sea water medium as well as the pipes and cables in low resistivity soil.

Aluminum-Zinc-Cadmium series (ZAC Series) is a sacrificial anode casted by high purity zinc and aluminum, cadmium alloy.It is approved by CCS and its quality standards is in accordance with the GB/T4950-2002 standard. The zinc anode chemical composition conforms to the standard of US MIL-A-18001H and ASTM-B418 (Type 1). The anode used for pipelines is at the same time in line with SY/T0019-97 ‘Design Code for Sacrificial Anode Cathodic Protection of Buried Steel Pipeline’.

Specifications of Rectangle Type Zinc Anode for Sea Water Cooling System

Type	Specification (mm)	Iron Foot Size (mm)				Net Weight (kg)	Gross Weight (kg)
Type	A×(B1+B2)×C	D	E	F	G	Net Weight (kg)	Gross Weight (kg)
ZE-1	500×(115+135)×130	620	50	6	8~10	54.5	56.0
ZE-2	1000×(80+100)×80	1200	30	6	6~8	49.0	50.0
ZE-3	500×(105+135)×100	620	40	6	8~10	39.2	40.0
ZE-4	500×(80+100)×80	620	30	6	6~8	24.4	25.0
ZE-5	400×(110+120)×50	500	35	4	5~6	15.4	16.0
ZE-6	300×(140+160)×40	360	60	4	5~6	12.0	12.5
ZE-7	200×(90+110)×40	250	30	3	5~6	5.3	5.5

Specifications of Disc Type Zinc Anode for Seawater Cooling Water System

Type	Specification (mm)		Iron Foot Size (mm)					Net Weight (kg)	Gross Weight (kg)
Type	A×B	C	D	E	F	H	G	Net Weight (kg)	Gross Weight (kg)
ZE-8	300×60	40	80	50	12	6~8	6	29.8	30.0
ZE-9	360×40	50	100	70	14	5~6	6	28.3	28.5
ZE-10	300×40	40	80	50	12	5~6	6	19.8	20.0
ZE-11	200×50	35	75	45	10	5~6	4	10.3	10.5
ZE-12	180×50	35	75	45	10	5~6	4	8.3	8.5
ZE-12	120×100	30	75	45	10	8~10	4	7.3	7.5

Chemical Composition (%)

Chemical Element	Al	Cd	Impurity Element				Zn
Chemical Element	Al	Cd	Fe	Cu	Pb	Si	Zn
Content	0.3~0.6	0.05~0.12	≤0.005	≤0.005	≤0.006	≤0.125	margin

Electrochemical Properties

Electrochemical Properties

Open Circuit Potential

Working Potential

Actual Capacitance

(Ah/kg)

Consumption Rate

(Ah/kg)

Current Efficiency

Dissolution Performance

In Sea Water

(1 mA/cm2)

-1.09~-1.05

-1.05~-1.08

≥780

≤11.23

≥95

Surface dissolution is even, while the corrosion products are easy to fall off

In Soil

(0.03 mA/cm2)

≤-1.05

≤-1.03

≥530

≤17.25

≥65

Zinc Anode for Seawater Cooling System