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Protective fence on surface coated with tin-plated coating and preparation method thereof

A technology for surface coating and guardrails, applied in coatings, metal material coating processes, molten spraying, etc., can solve problems such as ignoring carbon monoxide prevention, air pollution, and affecting the anti-corrosion performance of guardrails, so as to speed up the electroplating speed and improve Efficiency, improve the effect of overall stability

Active Publication Date: 2019-02-22
JIANGSU GUGELANSHAN PROTECTIVE FACILITIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As is well known to the general public, at present, automobile exhaust exhausts more carbon monoxide, causing serious air pollution, which is extremely unfavorable to the maintenance of road guardrails. However, traditional guardrail production ignores the prevention of carbon monoxide, which affects the anti-corrosion performance of guardrails.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Degrease and derust the fence: use hydrochloric acid or sulfuric acid electrolytic pickling to remove the oxide layer on the surface of the fence, then clean it with deionized water and dry it at 60°C.

[0020] 2. Solvent treatment on the guardrail: choose ammonium chloride and sodium chloride as the mixed solvent, the volume ratio of ammonium chloride: sodium chloride is 1:5; apply the mixed solvent on the surface of the guardrail to form a solvent layer to Increases the adhesion of subsequent coatings.

[0021] 3. Spray galvanized layer on the surface of the guardrail: use thermal spraying process, use arc spray gun to spray zinc liquid on the surface of the guardrail, the spray thickness is 60μm, and then perform curing treatment, the curing temperature is set at 200 ° C, and finally on the surface of the guardrail A galvanized layer is formed, and the galvanized layer is used as a cathodic protection layer.

[0022] 4. Preparation of chromium-containing oxide la...

Embodiment 2

[0025] 1. Degrease and derust the fence: use hydrochloric acid or sulfuric acid electrolytic pickling to remove the oxide layer on the surface of the fence, then clean it with deionized water and dry it at 60°C.

[0026] 2. Solvent treatment on the guardrail: choose ammonium chloride and sodium chloride as the mixed solvent, the volume ratio of ammonium chloride: sodium chloride is 1:5; apply the mixed solvent on the surface of the guardrail to form a solvent layer to Increases the adhesion of subsequent coatings.

[0027] 3. Spray galvanized layer on the surface of the guardrail: use thermal spraying process, use arc spray gun to spray zinc liquid on the surface of the guardrail, the spray thickness is 65μm, and then perform curing treatment, the curing temperature is set at 200 ℃, and finally on the surface of the guardrail A galvanized layer is formed, and the galvanized layer is used as a cathodic protection layer.

[0028] 4. Preparation of chromium-containing oxide laye...

Embodiment 3

[0031] 1. Degrease and derust the fence: use hydrochloric acid or sulfuric acid electrolytic pickling to remove the oxide layer on the surface of the fence, then clean it with deionized water and dry it at 70°C.

[0032] 2. Solvent treatment on the guardrail: choose ammonium chloride and sodium chloride as a mixed solvent, and the volume ratio of ammonium chloride: sodium chloride is 1:6; apply the mixed solvent on the surface of the guardrail to form a solvent layer to Increases the adhesion of subsequent coatings.

[0033] 3. Spray galvanized layer on the surface of the protective fence: use thermal spraying process, use arc spray gun to spray zinc liquid on the surface of the protective fence, the spray thickness is 60 μm, and then perform curing treatment. The curing temperature is set at 210 ° C. A galvanized layer is formed on the surface of the column, and the galvanized layer is used as a cathodic protection layer.

[0034] 4. Preparation of chromium-containing oxide ...

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Abstract

The invention discloses a protective guard with the surface coated with a tinning coating surface, and belongs to the field of protection facilities. The surface of the protective guard is coated with a composite coating. The composite coating is sequentially provided with a zinc coating, a chromium-containing oxide layer and a tin coating from the inner layer to the outer layer. The tin coating is a stannous methanesulfonate plating solution layer. A stannous methanesulfonate plating solution comprises stannous methanesulfonate, methanesulfonic acid and surfactant phenolphthalein. The mass ratio of the stannous methanesulfonate to the methanesulfonic acid to the surfactant phenolphthalein is 250:1:2. Through electrolytes such as the methanesulfonic acid, tin is deposited on the surface of the protective guard, the solubility of the bivalent tin can be enhanced through the methanesulfonic acid, and a tin base protective layer with a certain thickness can be prepared on the topmost surface of the protective guard. The tin coating can play a certain isolation role on carbon monoxide in the atmosphere, and accordingly, the protective guard is indirectly protected. The invention further discloses a manufacturing method of the protective guard.

Description

technical field [0001] The invention relates to a protective fence, in particular to a protective fence whose surface is coated with a tin-plated coating and a preparation method thereof, belonging to the field of protective facilities. Background technique [0002] People often say that the five major golds refer to gold, silver, copper, iron, and tin. The application of tin can be traced back to ancient times. my country is rich in tin minerals, and the texture of metal tin is soft, so there are many applications for tin. , such as in chemical products, electronic products, metallurgy, mechanical building materials, and even food packaging. Among them, the reaction of tin and oxygen can generate tin dioxide, and tin dioxide can be used as a catalyst to prevent carbon monoxide pollution. As the public knows, at present, the exhaust gas of automobiles emits a lot of carbon monoxide, and the air pollution is serious, which is extremely unfavorable for the maintenance of road ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C28/00C23C4/08C23C22/33C25D3/30C25D3/32C23F13/00
CPCC23C4/08C23C22/33C23C28/3225C23C28/3455C23F13/005C25D3/30C25D3/32
Inventor 朱发海朱青泽
Owner JIANGSU GUGELANSHAN PROTECTIVE FACILITIES CO LTD
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