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Hot dip aluminum-silicon coating technology and use thereof

A hot-dip aluminum plating and hot-dip plating technology, applied in hot-dip plating process, metal material coating process, coating and other directions, can solve the problems of poor coating adhesion, heavy maintenance workload and high production cost, and achieve Improve fluidity and coating brittleness, easy operation and easy control

Inactive Publication Date: 2011-11-23
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the above methods are used for protection, the adhesion of the coating is poor in many cases, and daily monitoring and maintenance are required.
[0003] At present, there are many hot-dip aluminum plating processes, but the processes are more complicated.
In the widely used improved Sendzimir method, the plated parts must be isolated from the air with a protective gas, so the entire process is airtight, and the protective gas must be replaced frequently, which makes the process more difficult to implement, and the production cost very high
And so far, there is no existing technology for hot-dip aluminum-silicon process design for metal materials in the marine and atmospheric working environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A3 steel surface hot-dip aluminum-silicon:

[0037]The A3 steel plate is obtained, and the pretreatment process includes: degreasing (degreasing), cleaning, derusting, cleaning and other pretreatments, and plating aid treatment.

[0038] 1. Degreasing pretreatment: place the plated parts in a degreasing solution at 80°C for degreasing pretreatment. The degreasing solution formula is 35g / L sodium hydroxide, 40g / L sodium carbonate, 40g / L sodium phosphate, 5g / L sodium silicate, the rest is water, the treatment time is 10 minutes, the degreasing effect can be visually inspected, and immediately after degreasing, wash with high temperature water at 85°C to remove the degreasing liquid on the surface of the plated parts;

[0039] 2. Rust removal pretreatment: at room temperature, place the degreased plated parts in a rust removal solution for 5 minutes. The rust removal solution formula is 15% hydrochloric acid, 0.5% urotropine, The balance is water, and strict cleaning shou...

Embodiment 2

[0045] Hot-dip aluminum-silicon plating on the surface of A3 steel:

[0046] To obtain A3 steel, the pretreatment process includes: degreasing (degreasing), cleaning, derusting, cleaning and other pretreatments, and plating aid treatment.

[0047] 1. Degreasing pretreatment: place the plated parts in a degreasing solution at 90°C for degreasing pretreatment. The degreasing solution formula is 20g / L sodium hydroxide, 30g / L sodium carbonate, 30g / L sodium phosphate, 6g / L sodium silicate, the rest is water, the treatment time is 5 minutes, and the degreasing effect can be visually checked. After degreasing, wash immediately. The purpose of cleaning is to remove the degreasing liquid on the surface of the plated parts;

[0048] 2. Rust removal pretreatment: put the degreased plated parts in the rust removal solution for 15 minutes, the rust removal solution formula is 3% hydrochloric acid, 0.8% urotropine, and the balance is water , Strict cleaning should be carried out immediatel...

Embodiment 3

[0054] Hot-dip aluminum-silicon plating on the surface of A3 steel:

[0055] To obtain A3 steel, the pretreatment process includes: degreasing (degreasing), cleaning, derusting, cleaning and other pretreatments, and plating aid treatment.

[0056] 1. Degreasing pretreatment: place the plated parts in a degreasing solution at 60°C for degreasing pretreatment. The degreasing solution formula is 50g / L sodium hydroxide, 50g / L sodium carbonate, 20g / L sodium phosphate, 3g / L sodium silicate, the rest is water, the treatment time is 15 minutes, the degreasing effect can be visually checked, and the cleaning can be carried out immediately after degreasing, and the cleaning can use normal temperature water or high temperature water of 90 ℃, the purpose is to remove the surface of the plated parts. Degreasing fluid;

[0057] 2. Rust removal pretreatment: put the degreased plated parts in the rust removal solution for 10 minutes, the rust removal solution is 9% hydrochloric acid, 1.0% ur...

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PUM

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Abstract

The invention provides a hot dip aluminum-silicon coating technology and a use thereof. The technology comprises the following steps of acquiring a workpiece needing to be coated, carrying out pretreatment on the workpiece needing to be coated, putting the pretreated workpiece into a coating auxiliary agent to carry out a coating auxiliary process, putting the workpiece treated by the coating auxiliary process into hot coating solution to carry out a hot-dip coating process, and carrying out passivation treatment on the workpiece treated by the hot-dip coating process, wherein the hot coating solution comprises: by weight, 4 to 10% of molten silicon and 96 to 90% of molten liquid aluminium, and the surface of the hot coating solution is added with surface covering agents of hot coating solution. The hot dip aluminum-silicon coating technology has simple processes, is suitable for industrialized production, can prepare a coated workpiece with good seawater corrosion resistant performances, realizes a high degree of combination of a workpiece needing to be coated and a coating layer, is suitable for hot dip coating treatment on the surface of a metal material, and is especially suitable for treatment on the surface of a housing of an illuminating device utilized in an ocean environment.

Description

technical field [0001] The invention belongs to the technical field of hot-dip plating, and in particular relates to a hot-dip aluminum-silicon plating process and its application. Background technique [0002] Materials such as shells of industrial lamps commonly used today are easily corroded when used in marine and atmospheric environments. This is because the marine environment is a complex corrosion environment. In this environment, seawater itself is a strong corrosive medium. At the same time, waves, waves, tides, and currents produce low-frequency reciprocating stress and impact on metal components, which directly or indirectly accelerate the corrosion process. This not only seriously affects the appearance of the product, but also weakens the mechanical properties of the material, causing serious economic losses. Therefore, under normal circumstances, it is protected by applying a protective coating on its surface. However, when the above method is used for prote...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/12C23C2/02
Inventor 周明杰李里
Owner OCEANS KING LIGHTING SCI&TECH CO LTD