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Preservative treatment method for thin carbon steel plate

A technology for anti-corrosion treatment and components, applied in the plating of superimposed layers, liquid chemical plating, coatings, etc., can solve the problems of uneven thickness distribution of the coating, peeling off of the spray layer, affecting the normal use of components, etc., to strengthen anti-corrosion Treatment effect, enhanced anti-corrosion effect, good effect of nickel plating

Active Publication Date: 2011-09-28
OCEANS KING LIGHTING SCI&TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For thin-plate components of carbon structural steel (referred to as carbon steel) with a relatively complex structure, the current commonly used anti-corrosion processes mainly include: one is to spray plastic on the surface of the component, but the current powder spraying process is difficult to spray on the components such as voids, bends, Complicated parts such as corners, and more importantly, the components in thin plate structural parts are often connected by welding. The effect of spraying on the welded seams and solder joints is not ideal. The powder thickness of the weld seam and solder joint surface Uneven, it is easy to cause the sprayed plastic layer to fall off, and the part that falls off will rust in a short time, shortening the service life of the component
The second is to use the electroplating nickel process to plate a layer of metal nickel that is not easy to rust on the surface of the component. Due to the complex structure of the carbon steel sheet component, the current density distribution on the surface of the component is very uneven during electroplating, so that the thickness of the coating is not uniform. There is almost no coating on the surface, which also affects the normal use of components

Method used

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  • Preservative treatment method for thin carbon steel plate
  • Preservative treatment method for thin carbon steel plate
  • Preservative treatment method for thin carbon steel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1, such as figure 2 The component shown as a carbon steel sheet is a camouflaged headlight air shield, which uses Q235 sheet δ=1mm, welded structural parts, and has many bends and welds.

[0028] Its anticorrosion treatment method comprises the following steps:

[0029] (1) Firstly, electroless nickel plating is carried out on carbon steel sheet members:

[0030] A1. Put the camouflaged headlight air shield as a whole into organic solvent acetone to remove oil, then put it into sodium bicarbonate solution to remove oil, wash it with water, put it into dilute sulfuric acid with a mass percentage concentration of 10% for weak erosion, then wash it with water, and then Neutralize the dilute acid with sodium bicarbonate solution and rinse with clean water.

[0031] B1. Put the camouflaged headlight air shield after cleaning into the plating solution for 3 hours; the pH value of the plating solution is 6, and the thickness of the electroless nickel plating layer i...

Embodiment 2

[0043] Example 2, using Q235 thin plate welded with δ=1mm to make structural parts, there are many bends and welds.

[0044] Its anticorrosion treatment method comprises the following steps:

[0045] (1), firstly carry out electroless nickel plating on the components:

[0046] A1. Put the components that make up the components into organic solvent ethanol for degreasing, then put them into sodium carbonate solution for degreasing, put them into dilute sulfuric acid with a mass percentage concentration of 10% for weak erosion after washing with water, then wash with water, and then wash them with carbonic acid Sodium solution neutralizes dilute acid, and finally rinses with clean water;

[0047] B1. After the cleaning treatment, the components that make up the components are put into the plating solution for plating for 2 hours; the pH value of the plating solution is 5.8, and the thickness of the electroless nickel plating layer is 15 μm.

[0048] Described plating solution ...

Embodiment 3

[0059] Embodiment 3, using Q235 thin plate δ=1mm to weld to make structural parts, there are many bends and welds.

[0060] Its anticorrosion treatment method comprises the following steps:

[0061] (1), firstly carry out electroless nickel plating on the components:

[0062] A1. Put the whole component into the organic solvent acetone to degrease, then put it into a sodium hydroxide solution with a mass percentage concentration of 15% to degrease, wash it with water, put it into dilute sulfuric acid with a mass percentage concentration of 10% for weak erosion, and then wash it with water. Then use 10% sodium hydroxide solution to neutralize the dilute acid, and finally rinse with clean water;

[0063] B1. The components after the cleaning treatment are put into the plating bath as a whole and plated for 4 hours; the pH value of the plating bath is 6.2, and the thickness of the electroless nickel plating layer is 40 μm.

[0064] Described plating solution is made up of the c...

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Abstract

The invention discloses a preservative treatment method for a thin carbon steel plate, which comprises the following steps: (1) carrying out chemical nickel plating treatment of a thin carbon steel plate member; (2) after chemical nickel plating, carrying out spray molding treatment on each part surface of the thin carbon steel plate member; and (3) after each part is assembled, carrying out the spray molding treatment again. The preservative treatment method for the thin carbon steel plate provided by the invention has the advantages of simple process, good preservative treatment effect and excellent treatment effect on seam welding spots in particular.

Description

technical field [0001] The invention relates to a method for anticorrosion treatment of steel components, in particular to a method for anticorrosion treatment of carbon steel sheet components. Background technique [0002] For thin-plate components of carbon structural steel (referred to as carbon steel) with a relatively complex structure, the current commonly used anti-corrosion processes mainly include: one is to spray plastic on the surface of the component, but the current powder spraying process is difficult to spray on the components such as voids, bends, Complicated parts such as corners, and more importantly, the components in thin plate structural parts are often connected by welding. The effect of spraying on the welded seams and solder joints is not ideal. The powder thickness of the weld seam and solder joint surface If it is not uniform, it is easy to cause the sprayed plastic layer to fall off, and the part that falls off will rust in a short time, shortening...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C28/00C23C18/32C23C18/34B05B5/08
Inventor 周明杰于永生魏永佳
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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