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Magnesium alloy section bar electrostatic powder spraying production method

A production method and technology of electrostatic powder, applied in coating, device for coating liquid on surface, surface pretreatment, etc., can solve the problems of inability to achieve color diversity of magnesium alloy profiles, inability to meet customer needs, and single color, etc. Achieve the effect of realizing diversity, improving hardness and improving anti-corrosion performance

Inactive Publication Date: 2010-01-27
江苏锦绣铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the anti-corrosion performance of magnesium alloy profiles, the current surface treatment methods of magnesium alloys mainly include chemical conversion and anodic oxidation, but the color of these two methods is single, which can no longer meet the needs of customers and cannot realize the diversity of colors of magnesium alloy profiles.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A production method of electrostatic powder spraying of magnesium alloy profiles according to the present invention adopts the following process steps:

[0016] Immerse the magnesium alloy profile (workpiece model MJ001) in a nitric acid solution (10 liters of water contains 0.45 kg of nitric acid, and the nitric acid is industrially pure) for degreasing treatment, the mass concentration of nitric acid is 4.5%, and wash it with water after 5 minutes. Rinse with tap water to wash away the nitric acid solution on the workpiece; then put the rinsed magnesium alloy profiles in an oven to dry at a temperature of 75°C; after drying, place the magnesium alloy profiles on a horizontal spraying production line and spray them with a spray gun The thermosetting powder (the thermosetting powder is produced by Wuxi Jimei Powder Coatings Co., Ltd.) is sprayed on the magnesium alloy profile; the spray gun pressure: 2 bar; the spray gun distance from the magnesium alloy profile: 0.2m; t...

Embodiment 2

[0017] Embodiment two: a kind of electrostatic powder spraying production method of magnesium alloy profiles of the present invention adopts the following process steps:

[0018] Immerse the magnesium alloy profile (workpiece model MJ002) in a nitric acid solution with a mass concentration of 3% (10 liters of water contains 0.3 kg of industrial pure nitric acid) for degreasing treatment, wash the nitric acid solution on the surface of the magnesium alloy profile with water after 8 minutes, and then put it in an oven Internal drying, drying temperature: 80°C, spraying after drying, hanging the dried magnesium alloy profiles on the horizontal spraying production line, spraying the thermosetting powder with a spray gun (the thermosetting powder is produced by Wuxi Jimei Powder Coating Co., Ltd.) Spray on magnesium alloy profile; spray gun pressure: 3 bar, spray gun distance from magnesium alloy profile: 0.25m, spraying thickness: 50μm, and then solidify into finished product, curi...

Embodiment 3

[0019] Embodiment three: a kind of electrostatic powder spraying production method of magnesium alloy profile of the present invention adopts the following process steps:

[0020] Immerse the magnesium alloy workpiece (workpiece model MJ001) in the nitric acid solution for degreasing treatment, the nitric acid solution mass concentration is 5% (10 liters of water contains 0.5 kg of industrial pure nitric acid), wash the nitric acid solution on the surface of the magnesium alloy profile with water after 7 minutes, and then Put it in an oven for drying, the drying temperature is: 85°C, spray coating after drying, hang the dried magnesium alloy profile on the horizontal spraying production line, and spray the thermosetting powder (the thermosetting powder is produced by Wuxi Jimei Powder Coating Co., Ltd.) with a spray gun Produced by the company) sprayed on magnesium alloy profiles; spray gun pressure: 3 bar, spray gun distance from magnesium alloy profiles: 0.23m, spraying thick...

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Abstract

The invention relates to a magnesium alloy section bar electrostatic powder spraying production method which belongs to the technical field of surface processing of nonferrous metal. The method is characterized by comprising the following technical steps: soaking a magnesium alloy section bar in a nitric acid solution at normal temperature to carry out degreasing processing, and washing the magnesium alloy section bar after degreasing processing by running water till the nitric acid solution on a workpiece is completely removed; drying the washed magnesium alloy section bar; after the magnesium alloy section bar is dried, loading on the horizontal type spray production line and spraying powder on the magnesium alloy section bar by a spray gun; and curing the sprayed magnesium alloy section bar into a finished product. The invention can meet the requirement of a customer and vary colors of the magnesium alloy section bar, and the adhesive force reaches the zero grade according to a grid test of GB / T9286; the detection of indentation hardness is carried out according to GB / T9275 and is larger than or equal to 80; other properties conform to the standard of GB5237; and the invention can improve the corrosion resistance and the hardness of the magnesium alloy section bar and vary the colors of the magnesium alloy section bar.

Description

technical field [0001] The invention relates to a production method for electrostatic powder spraying of magnesium alloy profiles, which belongs to the technical field of surface treatment of nonferrous metals. Background technique [0002] Magnesium alloy is currently the lightest metal structural material that can be used in industrial applications. Magnesium alloy not only has a small specific gravity (1.74g / cm 3 , which is only 64% of aluminum and 22% of steel), and has high specific strength and specific stiffness. It is known as "the green engineering material of the 21st century". In order to improve the anti-corrosion performance of magnesium alloy profiles, the current surface treatment methods of magnesium alloys mainly include chemical conversion and anodic oxidation, but these two methods have a single color, which cannot meet the needs of customers and cannot realize the diversity of colors of magnesium alloy profiles. Contents of the invention [0003] The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D3/00B05D3/10B05D3/02
Inventor 薛健邓胜力陈晓红丁业
Owner 江苏锦绣铝业有限公司
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