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A kind of anti-corrosion method of rare earth alloy coating for grounding grid protection
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A rare earth alloy and coating anti-corrosion technology, which is applied in the direction of metal material coating process, coating, molten spraying, etc., can solve the problems of grounding grid material corrosion and poor coating protection ability, so as to improve the corrosion resistance life and reduce the Effect of thin plating thickness and improved corrosion resistance
Inactive Publication Date: 2017-06-09
STATE GRID CORP OF CHINA +3
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Problems solved by technology
To solve the current situation of serious corrosion of grounding grid materials and poor protection ability of existing coatings, and to reflect the superiority of rare earth-containing aluminum-zinc alloy anti-corrosion coatings
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Embodiment 1
[0016] (1) A group of elements is selected according to the formula. According to the weight percentage of the elements, the composition ratio of the adhesive primer is Ni: 60, Al: 30, Zn: 9, Fe: 1. The total amount of prepared primer is 500kg, then the weight of each material required is calculated as follows: Ni: 300kg, Al: 150kg, Zn: 45kg, Fe: 5kg. The composition ratio of the functional surface coating is Zn: 30, Ni: 10, Mn: 0.5, Si: 0.1, Cr: 0.1, Ti: 1, Be: 0.03, rare earth additives La: 0.7, Ce: 0.2, Pr: 0.5, Er: 1.6, the balance being Al. The total amount of prepared surface coating is 1000kg, then the weight of each material required is calculated as Zn: 300kg, Ni: 100kg, Mn: 5kg, Si: 1kg, Cr: 1kg, Ti: 10kg, Be: 0.3kg , La: 7kg, Ce: 2kg, Pr: 5kg, Er: 16kg, Al: 552.7kg.
[0017] (2) First add aluminum ingots or molten aluminum into the melting furnace, heat it to melt it completely and keep it warm at 800°C. Then add trace elements according to the proportion of the ...
Embodiment 2
[0022] (1) A group of elements is selected according to the formula. According to the weight percentage of the elements, the composition ratio of the adhesive primer is Ni: 57, Al: 28, Zn: 13, Fe: 2. The total amount of prepared primer is 500kg, then the weight of each material required is calculated as follows: Ni: 285kg, Al: 140kg, Zn: 65kg, Fe: 10kg. The composition ratio of the functional surface coating is Zn: 35, Ni: 15, Mn: 0.78, Si: 0.5, Cr: 0.15, Ti: 0.85, Be: 0.04, rare earth additive La: 0.3, Ce: 0.15:, Nd: 0.9 , Sc: 0.65, the balance being Al. The total amount of prepared surface coating is 1000kg, then the weight of each material required is calculated as Zn: 350kg, Ni: 150kg, Mn: 7.8kg, Si: 5kg, Cr: 1.5kg, Ti: 8.5kg, Be : 0.4kg, La: 3kg, Ce: 1.5kg, Nd: 9kg, Sc: 6.5kg, Al: 456.8kg.
[0023] (2) First add aluminum ingots or molten aluminum into the melting furnace, heat it to melt it completely and keep it warm at 750°C. Then add trace elements according to the ...
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technical field [0001] The invention relates to the field of conductive coating anticorrosion, more specifically, the invention relates to a method for anticorrosion of a rare earth alloy coating used for grounding grid protection. Background technique [0002] With the development of the economy and the progress of the times, people's requirements for the power system are getting higher and higher. In recent years, the power system has been continuously developed in the direction of ultra-high voltage, large capacity and long distance. The grounding system is the basic guarantee for the safe operation of the power grid, and its importance is becoming more and more prominent. The grounding system is a channel for the discharge of power generation and substations. It mainly has three protective functions: working grounding, ensuring the normal operation of the power system and discharging fault current; protective grounding, protecting personnel from leakage current electric...
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