CN101632983A - Magnesium alloy section bar electrostatic powder spraying production method - Google Patents
Magnesium alloy section bar electrostatic powder spraying production method Download PDFInfo
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- CN101632983A CN101632983A CN200910183888A CN200910183888A CN101632983A CN 101632983 A CN101632983 A CN 101632983A CN 200910183888 A CN200910183888 A CN 200910183888A CN 200910183888 A CN200910183888 A CN 200910183888A CN 101632983 A CN101632983 A CN 101632983A
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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
The present invention relates to a kind of magnesium alloy section bar electrostatic powder spraying production method, belong to the non-ferrous metal technical field of surface.
Background technology
Magnesium alloy is the light metal structure material that can be used as commercial Application at present.Magnesium alloy is the little (1.74g/cm of proportion not only
3, only be 64% of aluminium, steel 22%), and specific strength and specific stiffness height are called " the green engineering material of 21 century ".For improving the antiseptic property of magnesium alloy profiles, the Mg alloy surface processing mode mainly contains chemical conversion and anodic oxidation at present, but this dual mode color is single, has not satisfied customer demand, can't realize the diversity of magnesium alloy profiles color.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, thereby a kind of antiseptic property that can improve magnesium alloy profiles is provided, realize the diversity of magnesium alloy profiles color, and can improve the magnesium alloy section bar electrostatic powder spraying production method of magnesium alloy profiles hardness.
According to technical scheme provided by the invention, a kind of magnesium alloy section bar electrostatic powder spraying production method, adopt following processing step:
1, degreasing process: magnesium alloy profiles is immersed ungrease treatment in the salpeter solution at normal temperatures, the salpeter solution mass concentration: 3～5%, the time is immersed 5～8 minutes time;
2, washing step: the magnesium alloy profiles of ungrease treatment is washed with running water, wash salpeter solution on the most workpiece;
3, baking operation: the magnesium alloy profiles that will wash in temperature is: dry moisture content under 75～85 ℃ the condition;
4, powder spraying process: be contained on the horizontal type spray-painting production line after the magnesium alloy profiles oven dry and powder be sprayed on the magnesium alloy profiles with spray gun; Spray gun pressure: 1.8～4.5 crust; Spray gun spray distance: 0.2～0.35m; Coating thickness: 40～80 μ m; Powder is the thermosetting powder.
5, curing process: the magnesium alloy profiles through spraying is cured as finished product, and solidification temperature is: 200～205 ℃, be hardening time: 8～12 minutes.
Above-mentioned salpeter solution is prepared per 10 premium on currency and is added 0.3～0.5 kilogram of nitric acid.
Compared with the prior art the present invention has the following advantages:
The present invention can satisfy customer requirement, makes magnesium alloy profiles color diversity, and the adhesive force detection is carried out cross cut test by GB/T9286 and reached 0 grade; Identation hardness detects is undertaken 〉=80 by GB/T 9275; Other performance meets GB 5237 standards; Can improve the antiseptic property of magnesium alloy profiles, realize the diversity of magnesium alloy profiles color, and can improve magnesium alloy profiles hardness.
The specific embodiment
Following the present invention will be further described in conjunction with the embodiments:
Embodiment one:
A kind of magnesium alloy section bar electrostatic powder spraying production method of the present invention, adopt following processing step:
Magnesium alloy profiles (workpiece model MJ001) is immersed salpeter solution (contain 0.45 kilogram of nitric acid in 10 premium on currency, nitric acid is technical pure) in carry out ungrease treatment, the nitric acid mass concentration: 4.5%, 5 minute after washing, the magnesium alloy profiles of degreasing is washed with running water, wash salpeter solution on the most workpiece; The magnesium alloy profiles that will wash is put drying in oven then, and bake out temperature is 75 ℃; Be contained on the horizontal type spray-painting production line after the magnesium alloy profiles oven dry, powder thermosetting (powder thermosetting is produced by the Wuxi U.S. powdery paints of Ji Co., Ltd) coating be sprayed on the magnesium alloy profiles with spray gun; Spray gun pressure: 2 crust; Spray gun is apart from magnesium alloy profiles: 0.2m; Coating thickness: 45 μ m; Magnesium alloy profiles through spraying is cured as finished product, and solidification temperature is: 200 ℃, be hardening time: 8 minutes.The magnesium alloy profiles coating that sprays through the method can satisfy standard-required.
Embodiment two: a kind of magnesium alloy section bar electrostatic powder spraying production method of the present invention, adopt following processing step:
Carry out ungrease treatment in the salpeter solution (containing 0.3 kilogram of technical pure nitric acid in 10 premium on currency) with magnesium alloy profiles (workpiece model MJ002) immersion mass concentration 3%, wash magnesium alloy profiles surface salpeter solution after 8 minutes, put into drying in oven then, bake out temperature is: 80 ℃, spray after the oven dry, to dry the back magnesium alloy profiles and hang on the horizontal type spray-painting production line, powder thermosetting (powder thermosetting is produced by the Wuxi U.S. powdery paints of Ji Co., Ltd) will be sprayed on the magnesium alloy profiles with spray gun; Spray gun pressure is: 3 crust, and spray gun is apart from magnesium alloy profiles: 0.25m, and coating thickness is: 50 μ m, be cured then and be finished product, solidification temperature is: 202 ℃, be hardening time: 9 minutes, the magnesium alloy profiles coating that sprays through the method can satisfy standard-required.
Embodiment three: a kind of magnesium alloy section bar electrostatic powder spraying production method of the present invention, adopt following processing step:
To carry out ungrease treatment in magnesium alloy workpiece (workpiece model MJ001) the immersion salpeter solution, the salpeter solution mass concentration was 5% (containing 0.5 kilogram of technical pure nitric acid in 10 premium on currency), wash magnesium alloy profiles surface salpeter solution after 7 minutes, put into drying in oven then, bake out temperature is: 85 ℃, spray after the oven dry, to dry the back magnesium alloy profiles and hang on the horizontal type spray-painting production line, powder thermosetting (powder thermosetting is produced by the Wuxi U.S. powdery paints of Ji Co., Ltd) will be sprayed on the magnesium alloy profiles with spray gun; Spray gun pressure: 3 crust, spray gun is apart from magnesium alloy profiles: 0.23m, and coating thickness is: 60 μ m, be cured then and be finished product, solidification temperature is: 205 ℃, be hardening time: 8 minutes, the magnesium alloy profiles coating that sprays through the method can satisfy standard-required.
Claims (2)
1, a kind of magnesium alloy section bar electrostatic powder spraying production method is characterized in that: adopt following processing step:
(1), degreasing process: magnesium alloy profiles is immersed ungrease treatment in the salpeter solution at normal temperatures, the salpeter solution mass concentration: 3～5%, the time is immersed 5～8 minutes time;
(2), washing step: the magnesium alloy profiles of ungrease treatment is washed with running water, wash salpeter solution on the most workpiece;
(3), baking operation: the magnesium alloy profiles that will wash in temperature is: dry moisture content under 75～85 ℃ the condition;
(4), powder spraying process: be contained on the horizontal type spray-painting production line after the magnesium alloy profiles oven dry and powder be sprayed on the magnesium alloy profiles with spray gun; Spray gun pressure: 1.8～4.5 crust; Spray gun spray distance: 0.2～0.35m; Coating thickness: 40～80 μ m; (5), curing process: the magnesium alloy profiles through spraying is cured as finished product, and solidification temperature is: 200～205 ℃, be hardening time: 8～12 minutes.
2, a kind of magnesium alloy section bar electrostatic powder spraying production method according to claim 1 is characterized in that described powder is the thermosetting powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910183888A CN101632983A (en) | 2009-07-24 | 2009-07-24 | Magnesium alloy section bar electrostatic powder spraying production method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910183888A CN101632983A (en) | 2009-07-24 | 2009-07-24 | Magnesium alloy section bar electrostatic powder spraying production method |
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| CN101632983A true CN101632983A (en) | 2010-01-27 |
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| CN200910183888A Pending CN101632983A (en) | 2009-07-24 | 2009-07-24 | Magnesium alloy section bar electrostatic powder spraying production method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962180A (en) * | 2012-11-05 | 2013-03-13 | 佛山市南海华狮龙金属装饰制品有限公司 | Planar powder spraying production process applied to metal ceiling |
| CN107744931A (en) * | 2017-09-28 | 2018-03-02 | 浙江瀚镪自动化设备股份有限公司 | A kind of surface treatment method of ultra-thin metal corrosion-resistant finishes |
| CN112264277A (en) * | 2020-09-01 | 2021-01-26 | 太仓市博贸金属制品有限公司 | Integral spraying method for intelligent display rack |
-
2009
- 2009-07-24 CN CN200910183888A patent/CN101632983A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962180A (en) * | 2012-11-05 | 2013-03-13 | 佛山市南海华狮龙金属装饰制品有限公司 | Planar powder spraying production process applied to metal ceiling |
| CN107744931A (en) * | 2017-09-28 | 2018-03-02 | 浙江瀚镪自动化设备股份有限公司 | A kind of surface treatment method of ultra-thin metal corrosion-resistant finishes |
| CN112264277A (en) * | 2020-09-01 | 2021-01-26 | 太仓市博贸金属制品有限公司 | Integral spraying method for intelligent display rack |
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Application publication date: 20100127 |