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Water heater internal bladder having nano coating

A water heater liner, nano-coating technology, applied in coatings, water heaters, fluid heaters, etc., can solve the problems of inability to guarantee the quality of enamel, porcelain, and volume.

Inactive Publication Date: 2005-09-07
卢海南
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of the stainless steel liner are: 1. The weld seam is likely to cause electrical corrosion of the liner, resulting in water leakage; 2. The cost is high
[0005] The disadvantages of the enamel liner are: 1. In the process of transportation, installation and use, small vibrations can easily cause the porcelain to leak out, rusty water or water leakage; 2. Since the enamel process is a process in a high temperature environment, so , there are some structural steel plate pressed products that cannot guarantee the quality of enamel; 3. Even if it was identified as a qualified product at that time, it is difficult to guarantee that there will be no water leakage accidents during use
4. The volume is heavy, which increases the difficulty of assembly

Method used

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  • Water heater internal bladder having nano coating

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Experimental program
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Effect test

Embodiment 1

[0016] Use 2 mm thick ordinary steel plate or aluminum alloy plate, stainless steel plate, press and weld into 10 electric water heater inner tank blanks. After degreasing, pickling, water washing and other purification treatments are carried out on the inner surface of the body, the electroless nickel-phosphorus alloy layer is then treated.

[0017] The process of electroless plating is to pour the electroless plating solution containing nickel phosphorus into the plating tank in proportion, adjust the pH value of the plating solution to 4.7 with sulfuric acid or ammonia water, and maintain its temperature at 85 ° C, and the above blank Put the body into the plating solution and soak for 60 minutes. As a result, the inner surface is coated with a uniform nickel-phosphorus alloy film. It is measured that the thickness of the coating film is 15 microns, the hardness is HV300, the phosphorus content of the coating film is 10%, and the balance is nickel.

Embodiment 2

[0019] According to the scheme of embodiment 1, there are 10 common steel plates, aluminum alloy plates, and stainless steel inner tank blanks for electric water heaters. Clean the inner surface of the body with No. 60 cleaning solution, air dry, sandblast, clean, dip-coat zinc-chromium coating solution, and cure at 330°C for 40 minutes; spray zinc-chromium coating solution again, and cure at 330°C for 35 minutes. As a result, the inner surface is covered with a uniform layer of zinc-chromium alloy containing complex chromium salt compounds (nCr03.mCr203). The thickness of the coating was measured to be 12 microns.

Embodiment 3

[0021] On 10 inner tanks of electric water heaters with a nickel-phosphorus alloy layer, the inner surface is sprayed with zinc-chromium coating solution, and cured at 330° C. for 35 minutes. The electric water heater liner is made of a nickel-phosphorus alloy layer and a zinc-chromium alloy layer. The thickness of the coating was measured to be 25 microns.

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Abstract

This invention is heater inner bag with nanometer coating and metal inner bag as cog body. The feature is that a layer of coating (2) composed by non gold state nickel phosphor alloy or zinc chrome alloy is coated on inner bag inner surface. The material (1) of the metal inner bag is one of common steel plate, allautal or stainless steel plate. The cost is low, synthetic corrosion protection capability is good and little pollution to environment. It is propitious to electric water heater and solar energy water heater.

Description

technical field [0001] The invention relates to an inner container of a water heater. Especially a water heater liner with a nano-coating. [0002] It is suitable for electric water heaters and solar water heaters, and belongs to the water container of the above products. Background technique [0003] The existing water heater liner is mainly welded into a stainless steel liner by argon arc welding process. Or use ordinary steel plates to press and weld the body of the inner tank of the water heater, and then enamel. [0004] The disadvantages of the stainless steel liner are: 1. The weld seam is likely to cause electric corrosion of the liner, resulting in water leakage; 2. The cost is high. [0005] The disadvantages of the enamel liner are: 1. In the process of transportation, installation and use, small vibrations can easily cause the porcelain to leak, rusty water or water leakage; 2. Since the enamel process is a process in a high temperature environment, , Steel p...

Claims

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Application Information

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IPC IPC(8): F24H1/20F24H9/00F28F19/06
CPCF28F19/06
Inventor 卢海南
Owner 卢海南
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