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Equipment in the field of industrial production often suffers from corrosion and wear after being used for a period of time. In order to prolong the service life of the equipment, anticorrosive materials such as sacrificial anode are gradually applied to the production field, and also play a very prominent role. However, some corrosion-resistant sacrificial anode products after using for a period of time, their actual product performance is also greatly reduced, and zinc alloy sacrificial anode is one of the most common.
In the cathodic protection system, metal equipment is mainly protected by the consumption of anode. At present, the anode materials used in cathodic protection system mainly include magnesium anode, aluminum anode and zinc anode, among which magnesium metal and aluminum metal are used more. The factors that really affect the performance of zinc alloy sacrificial anode are as follows:
Zinc metal has many characteristics, such as easy filling, low melting point, difficult to loose, not easy to stick to the mold, small crystallization temperature range, and can extend the use of die casting die. Therefore, it can be cast into various thin-walled and complex castings. The castings can be treated with various surface treatments, especially with good electroplating property and good performance at room temperature. However, the size shrinkage of zinc block is easy to occur after it is cast into zinc anode, so when using zinc alloy anode, it is better not to add copper element, so as to avoid the decline of mechanical properties.
In addition, zinc alloy is prone to aging, so impurity content should be strictly controlled in material selection and melting. In seawater and other media containing chloride ions, aluminum alloy anode can be directly welded to the protected structure without filler.
The electrochemical performance of this product is very high. The anode material of unit weight has large power generation, good performance and strong self-regulation ability of sending out current. According to the dissolution condition, the anode surface of the product is evenly dissolved and has better protection effect than the similar products on the market.
In the selection of zinc and alloy materials, we should choose according to the scope of use, pay attention to the mechanical properties, tensile strength, maximum resistance to fracture, brittleness, plasticity and hardness of zinc alloys. Only by paying attention to various factors, paying attention to the accuracy and processability of zinc anode, can magnesium alloy play a greater role.
Shandong Linyi Bosi conductive materials Co., Ltd. is a high-tech enterprise specializing in the production of MMO flexible anode, conductive polymer flexible anode and titanium coated anode, mainly providing cathodic protection technology, engineering design, installation and technical services.
Tel: +86 17568010262£¬0539-3712117.