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Aluminum zinc series alloy sacrificial anode for electric water heaters

A sacrificial anode and electric water heater technology, applied in the field of aluminum-zinc alloy sacrificial anodes, can solve the problems of toxic heavy metals, low current efficiency of sacrificial anodes, polluted water quality, etc., achieve less secondary reaction products, improve current efficiency, and increase current efficiency effect

Active Publication Date: 2013-05-08
戴明安
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide an aluminum-zinc alloy sacrificial anode for an electric water heater to solve the problem of low current efficiency of the sacrificial anode at the current stage, solve the problem of water quality pollution by sacrificial anode dissolved substances at the present stage, and solve the problem of Problems with using toxic heavy metals in sacrificial anodes

Method used

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  • Aluminum zinc series alloy sacrificial anode for electric water heaters

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Effect test

Embodiment 1

[0024] The weight percentage of each component of the aluminum-zinc alloy sacrificial anode material is: 30% zinc, 0.15% tin, 0.005% copper, 0.12% iron, 0.12% silicon; the rest is aluminum, the impurity content of a single element is ≤0.1%, and the impurity content of all other elements ≤0.2%.

[0025] During the preparation, graphite crucibles are used to hold aluminum ingots and zinc ingots, and the aluminum and zinc ingots are melted in a heating furnace, then tin is added to the molten aluminum, stirred with graphite rods, slag is removed, cast into ingots out of the furnace, and then extruded into rods. Made into aluminum-zinc-tin sacrificial anode. It is then cut into rods suitable for electric water heaters, and can also be directly cast into rods for electric water heaters.

Embodiment 2

[0027] The weight percentage of each component of aluminum-zinc alloy sacrificial anode material is: 20% zinc, 1.5% magnesium, 0.05% tin, 0.005% copper, 0.12% iron, 0.12% silicon; the rest is aluminum, and the impurity content of individual elements is ≤0.1%, others The impurity content of all elements is ≤0.2%.

[0028] During preparation, graphite crucibles are used to hold aluminum ingots and zinc ingots, and the aluminum and zinc ingots are melted in a heating furnace, and then elements of magnesium and tin are added to the molten aluminum, stirred with graphite rods, slag removed, cast into ingots out of the furnace, and then extruded It is made into a rod and made into an aluminum-zinc-magnesium-tin sacrificial anode. It is then cut into rods suitable for electric water heaters, and can also be directly cast into rods for electric water heaters.

Embodiment 3

[0030] The weight percentage of each component of the aluminum-zinc alloy sacrificial anode material is: 10% zinc, 1% magnesium, 0.005% copper, 0.12% iron, 0.12% silicon; the rest is aluminum, the impurity content of a single element is ≤0.1%, and the impurity content of all other elements ≤0.2%.

[0031] During preparation, graphite crucibles are used to hold aluminum ingots and zinc ingots, and the aluminum and zinc ingots are melted in a heating furnace, then elemental magnesium is added to the molten aluminum, stirred with graphite rods, slag is removed, cast into ingots out of the furnace, and then extruded into rods , made into Al-Zn-Mg sacrificial anode. It is then cut into rods suitable for electric water heaters, and can also be directly cast into rods for electric water heaters.

[0032] Among the above schemes, the aluminum-zinc-tin sacrificial anode and the aluminum-zinc-tin-magnesium sacrificial anode are suitable for the protection of the inner tank of electric ...

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Abstract

The invention discloses an aluminum zinc series alloy sacrificial anode for electric water heaters, comprising the following main components: aluminum is used as raw material, the element zinc is added, and the element magnesium and / or the element stannum are / is further added. The additional element zinc has a weight percentage of 10.00 to 30.00, and the further additional elements are 0.05wt% to0.15wt% of stannum and 0.5wt% to 1.5wt% of magnesium. The ternary or quaternary alloy material in the invention solves the problems at present that the current efficiency of sacrificial anode is low,the solute of sacrificial anode pollutes water quality, and sacrificial anode uses poisonous heavy metal.

Description

technical field [0001] The invention relates to a sacrificial anode material, in particular to an aluminum-zinc alloy sacrificial anode used for anticorrosion of the inner tank of an electric water heater, which is mainly used in tap water (fresh water). Background technique [0002] Metal corrosion is one of the main forms of damage to metal equipment and components. The sacrificial anode cathodic protection method is one of the most widely used anti-corrosion methods at present. It can provide anti-corrosion protection for metal components working in aqueous solution or in an environment containing aqueous solution. The method is to connect the metal to be protected (cathode) with a metal (anode) that is more negative than his potential, and the two metals are in the same electrolyte (such as water, soil), with the help of sacrificial anode and the metal to be protected. The large potential difference and the current generated by the continuous active dissolution of the sa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F13/14C22C21/10
Inventor 戴明安
Owner 戴明安
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