CN102345126A - Method for treating surface of metal workpiece - Google Patents
Method for treating surface of metal workpiece Download PDFInfo
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- CN102345126A CN102345126A CN2010102456839A CN201010245683A CN102345126A CN 102345126 A CN102345126 A CN 102345126A CN 2010102456839 A CN2010102456839 A CN 2010102456839A CN 201010245683 A CN201010245683 A CN 201010245683A CN 102345126 A CN102345126 A CN 102345126A
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Abstract
The invention discloses a method for treating the surface of a metal workpiece. The method comprises the following steps: 1, pretreating the surface of the metal workpiece; 2, manufacturing a stereo pattern on the pretreated metal workpiece in an etching mode; and 3, putting the metal workpiece with the stereo pattern in an electrolyte, and carrying out micro-arc oxidation treatment to obtain a micro-arc oxidation workpiece with the stereo pattern and ceramic effects. Compared with the prior art, the method for treating the surface of the metal workpiece provided in the invention allows products prepared with the method of the invention to have beautiful appearances and be varied, and market demands to be satisfied.
Description
[technical field]
The present invention relates to a kind of surface treatment method, particularly about a kind of surface treatment method of metal works.
[background technology]
Differential arc oxidization technique (Microarc oxidation is the abbreviation of microplasma surface ceramic effectization technology MAO), its technology is simple, efficient is high, pollution-free, processing power is strong, development is very fast both at home and abroad in recent years.MAO is on the basis of common anode oxidation; Through on workpiece, applying voltage with special-purpose mao power source; The metal and the electrolyte solution of workpiece surface are interacted, form micro-arc discharge at workpiece surface, under effect of factors such as high temperature, electric field; Utilize the arc discharge enhancing and be enabled in the reaction that takes place on the anode; Thereby form the method for fine intensified ceramic effect film at the workpiece surface that with aluminium, magnesium, titanium metal and alloy thereof (being referred to as Valve Metal) is material, thereby make that workpiece surface is strengthened, hardness increases substantially, and have wear-resisting, anti-corrosion, withstand voltage, insulation and high temperature resistance impact characteristics.The outstanding feature of differential arc oxidization technique is: (1) has been improved the surface hardness of material significantly; Microhardness 800 to 2000HV; Reach as high as 3000HV, can compare favourably, substantially exceed the hardness of high carbon steel, high quality steel and rapid tool steel after the thermal treatment with wimet; (2) advantages of good abrasion performance; (3) good thermotolerance and erosion resistance fundamentally overcome aluminium, magnesium, the titanium alloy material shortcoming in application; (4) the good insulation performance performance is arranged, insulation resistance can reach 100MQ; (5) solution is environment-friendly type, meets the environment protection emission requirement; (6) process stabilizing is reliable; (7) reaction is carried out at normal temperatures, and is easy to operate, is easy to grasp; (8) matrix growth in situ ceramic effect film, in conjunction with firmly, evenly fine and close.
Yet, to see at present to such an extent that the appearance of differential arc oxidation product is attractive in appearance inadequately on the market, color is more single, is difficult to satisfy the demand of market diversification.
In view of this, be necessary to invent a kind of surface treatment method of metal works in fact, use the product of this method gained specious, various, satisfied market and wanted demand.
[summary of the invention]
The object of the present invention is to provide a kind of surface treatment method of metal works, use the product of this method gained specious, various, satisfied the market requirement.
For achieving the above object, the invention provides a kind of surface treatment method of metal works, it may further comprise the steps:
Pre-treatment is carried out on the surface of metal works;
Adopt etching mode to produce solid pattern the metal works after the above-mentioned processing;
The metal works of above-mentioned tool solid pattern is put into electrolytic solution carry out the differential arc oxidation processing, obtain the micro-arc oxidation workpiece that has solid pattern and have ceramic effect.
Compare and prior art, through the surface treatment method of metal works provided by the present invention, the surface of the product of gained has solid pattern and ceramic effect concurrently, makes that the outward appearance of product is various, attractive in appearance, has satisfied the requirement of market diversification.
Description of drawings:
Fig. 1 is the schema of the surface treatment method of metal works of the present invention.
[embodiment]
The preferred embodiments of the surface treatment method of metal works of the present invention is applied to 3c (Computer & Communication & Consumer; Computer product & communication product & consumption electronic product) in the product; This metal works can be metal or its alloys such as magnesium, aluminium, titanium, and this metal works is a magnesiumalloy in this case first embodiment.See also shown in Figure 1ly, it is the schema of the surface treatment method of metal works of the present invention, and the surface treatment method of this metal works comprises following steps:
Step 101: pre-treatment is carried out on the surface of this metal works, and in present embodiment, this magnesiumalloy carries out degreasing in yellow soda ash 20g/L and tsp 30g/L mixing solutions; Again with it through ultrasonic cleaning 1 minute; Then it was dried 10 minutes down for 100 ℃ in temperature, with to be used;
Step 102: adopt etching mode to produce solid pattern the metal works after the above-mentioned processing; Wherein pattern can be literal; Symbol; Figures etc., etching can adopt chemistry and electrochemical mode to carry out, and can obtain the product of the different pattern degree of depth through processing parameters such as control etching concentration and times.In this embodiment, which comprises the following steps of: printing on the surface of the magnesium alloy negative film a desired pattern; then at a temperature of 150 ℃ dried 30 minutes; then etched in the formula for the room temperature with oxalic acid (10 - 100g / L), OP-10 (0.1-5mL) and corrosion inhibitors (e.g., citric acid) 1 ~ 10g / L mixed chemical etching solution, the etching time according to customer needs to determine the etching depth, obtained as 30-120 seconds 0.05 ~ 0.3mm depth; plug it with an organic solvent toluene wipe or soak product until the ink cleaned, thereby etching process for processing samples, line edge is relatively clear, 30x magnifying glass below without jagged appearance can meet customer requirements;
Step 103: the metal works of above-mentioned tool solid pattern is put into electrolytic solution carry out the differential arc oxidation processing; Metal works is an anode, and stainless steel or stereotype are negative electrode, through processing parameters such as control voltage and times; On metal works, generating thickness is 3-20 μ m ceramic layer; Promptly obtain the micro-arc oxidation workpiece that the surface has solid pattern and has ceramic effect, in present embodiment, the magnesiumalloy after cleaning is put into 4g/L KOH and 10g/LNa
2SiO
3In the electrolytic solution, magnesiumalloy is an anode, and stainless steel is a negative electrode, carries out differential arc oxidation and handles.Through processing parameters such as control voltage and times, on the surface of magnesiumalloy, generating thickness is 10 μ m ceramic layers, again through 100 degree hot water sealing of holes; Obtain the magnesium alloy differential arc oxidation workpiece that the surface has solid pattern and ceramic effect;
Step 104: above-mentioned micro-arc oxidation workpiece is carried out the surface variation handle, it can adopt the mode of dip-coating, spraying.In present embodiment, above-mentioned differential arc oxidation magnesium alloy workpiece is adopted the mode of spraying spray last layer ultraviolet curing (UV) coating on the surface; It is 100-160 ℃ in temperature dried 10 minutes down; Obtain the surface and have solid pattern, ceramic effect and coloury differential arc oxidation magnesium alloy workpiece; In this case preferred embodiment; The pigment that can add the shining color effect of 0.1-1% tool in said ultraviolet curing (UV) coating, it is more attractive in appearance to make the surface of above-mentioned product have a shining color effect.
The prescription of wherein said ultraviolet curing (UV) coating is following:
| Component | Chinese | Per-cent |
| UV7605-B | Urethane acrylate | 25％ |
| U?400 | Oligopolymer | 5％ |
| ER-7800 | Propenoate | 15％ |
| TPGDA | Tripropylene glycol diacrylate | 22％ |
| TMPTA | Viscoat 295 | 29％ |
| 754 | Light trigger | 3％ |
| 184 | Light trigger | 1％ |
| Tego-2200 | Auxiliary agent | 0.5％ |
In this case second embodiment, said metal works is a duraluminum, and the surface treatment method of this metal works comprises following steps:
Step 101: pre-treatment is carried out on the surface of this metal works, and in present embodiment, this duraluminum carries out degreasing in yellow soda ash 20g/L and tsp 30g/L mixing solutions; Again with it through ultrasonic cleaning 1 minute; Then with it in the oven dry 10 minutes down of 100 ℃ of temperature, with etc. to be used;
Step 102: adopt etching mode to produce solid pattern the metal works after the above-mentioned processing; Wherein pattern can be literal; Symbol; Figures etc., etching can adopt chemistry and electrochemical mode to carry out, and can obtain the product of the different pattern degree of depth through processing parameters such as control etching concentration and times.In present embodiment, it may further comprise the steps: with the pattern cavity block that needs in the aluminum alloy surface printing; Again it was dried 30 minutes down for 150 ℃ in temperature; Use etch recipe to be NaOH (100-300/L) and NaNO at normal temperatures it again
3(1-10g/L) the mixing solutions spray carried out chemical milling in 3 minutes, and etch depth can reach 0.1-0.15mm; Again it was dried 15 minutes down for 100 ℃ in temperature; Again with it with wiping of organic solvent toluene or infusion product, remove clean until the printing ink of cavity block part;
Step 103: the metal works of above-mentioned tool solid pattern is put into electrolytic solution carry out the differential arc oxidation processing, metal works is an anode, and stainless steel or stereotype are negative electrode; Through processing parameters such as control voltage and times; On metal works, generating thickness is 3-20 μ m ceramic layer, promptly obtains the micro-arc oxidation workpiece that the surface has solid pattern and has ceramic effect, in present embodiment; Duraluminum after cleaning is put into 6g/L KOH electrolytic solution; Duraluminum is an anode, and stainless steel is a negative electrode, carries out differential arc oxidation and handles.Through processing parameters such as control voltage and times, on the surface of duraluminum, generating thickness is 10 μ m ceramic layers, again through 100 degree hot water sealing of holes; Obtain the aluminum alloy differential arc oxidation workpiece that the surface has solid pattern and ceramic effect;
Step 104: above-mentioned micro-arc oxidation workpiece is carried out the surface variation handle, it can adopt the mode of dip-coating, spraying.In present embodiment, the mode that above-mentioned differential arc oxidation Al alloy parts is adopted dip-coating is in surfaces coated last layer Sol-gel (molten palate-coagulate palate contains the organic solution of silicon) coating; It is 100-160 ℃ in temperature dried 10 minutes down; Obtain the surface and have solid pattern, ceramic effect and coloury differential arc oxidation magnesium alloy workpiece; In this case preferred embodiment; The pigment that can add the shining color effect of tool in said Sol-gel (dissolve palate-coagulate palate, contain the organic solution of the silicon) solution, it is more attractive in appearance to make the surface of above-mentioned product have a shining color effect.
The surface treatment method of metal works provided by the present invention makes that the product of this method gained of use is specious, and color is various, has satisfied the market requirement.
Claims (15)
1. the surface treatment method of a metal works is applied to it is characterized in that in computer product, communication product or the consumption electronic product that this method may further comprise the steps:
(1) pre-treatment is carried out on the surface of metal works;
(2) adopt etching mode to produce solid pattern the metal works after the above-mentioned processing;
(3) metal works of above-mentioned tool solid pattern is put into electrolytic solution and carry out the differential arc oxidation processing, obtain the micro-arc oxidation workpiece that has solid pattern and have ceramic effect.
2. the surface treatment method of metal works according to claim 1 is characterized in that, also comprises step (4): above-mentioned micro-arc oxidation workpiece is carried out the surface variation handle.
3. like the surface treatment method of the said metal works of claim 2, it is characterized in that the said micro-arc oxidation workpiece of step (4) carries out the mode that surperficial diversified treatment process adopts dip-coating or spraying.
4. the surface treatment method of metal works according to claim 1 is characterized in that step (1) may further comprise the steps: 1. metal works is put into skim soln and carry out degreasing; With the metal works after the degreasing through ultrasonic cleaning; 3. with above-mentioned metal works oven dry after ultrasonic cleaning.
5. like the surface treatment method of the said metal works of claim 4, it is characterized in that the solution that said degreasing mode is adopted is the mixing solutions of yellow soda ash 20g/L and tsp 30g/L.
6. the surface treatment method of metal works according to claim 1 is characterized in that step (2) may further comprise the steps: 1. with the pattern cavity block that needs on the metal works surface printing; 2. again with its oven dry; 3. again it is carried out chemical milling with the etch recipe spray at normal temperatures; 4. again with its oven dry; Again with it with organic solvent wiping or infusion product, remove clean until printing ink.
7. like the surface treatment method of the said metal works of claim 6, it is characterized in that said organic solvent wiping agent is a toluene.
8. the surface treatment method of metal works according to claim 1 is characterized in that said metal works is magnesium or magnesiumalloy.
9. like the surface treatment method of the said metal works of claim 8, it is characterized in that the etch recipe that etching magnesium or magnesiumalloy are adopted is the mixing solutions of oxalic acid (10-100g/L), OP-10 (0.1-5mL) and inhibiter 1～10g/L.
10. like the surface treatment method of the said metal works of claim 9, it is characterized in that said inhibiter is a Hydrocerol A.
11. the surface treatment method like the said metal works of claim 10 is characterized in that, has solid pattern and has spraying last layer ultraviolet curing (UV) coating on the micro-arc oxidation workpiece of ceramic effect said.
12. the surface treatment method like the said metal works of claim 11 is characterized in that, the prescription of said ultraviolet curing (UV) coating is:
13. the surface treatment method of metal works is characterized in that according to claim 1, said metal works is an aluminum or aluminum alloy.
14. the surface treatment method like the said metal works of claim 13 is characterized in that, the etch recipe that the etching aluminum or aluminum alloy is adopted is NaOH (100-300g/L) and NaNO
3Mixing solutions (1-10g/L).
15. the surface treatment method like the said metal works of claim 14 is characterized in that, has solid pattern and has dip-coating last layer Sol-gel on the micro-arc oxidation workpiece of ceramic effect (dissolve palate-coagulate palate, contain the organic solution of silicon) coating said.
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| CN201010245683.9A CN102345126B (en) | 2010-08-05 | 2010-08-05 | Method for treating surface of metal workpiece |
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| CN201010245683.9A CN102345126B (en) | 2010-08-05 | 2010-08-05 | Method for treating surface of metal workpiece |
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| CN102345126B CN102345126B (en) | 2014-08-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104862699A (en) * | 2013-11-21 | 2015-08-26 | 纳米及先进材料研发院有限公司 | Surface treatment method on Micro-arc oxidation treated Mg alloys |
| CN109082693A (en) * | 2017-06-13 | 2018-12-25 | 昆山汉鼎精密金属有限公司 | Fountain differential arc oxidation method and device |
| US10494730B2 (en) | 2016-05-02 | 2019-12-03 | Nano And Advanced Materials Institute Ltd | Surface color treatment of alloys with micro-arc oxidation process |
| CN111334798A (en) * | 2019-10-30 | 2020-06-26 | 宁波劳伦斯汽车内饰件有限公司 | Processing method of precision etching and selective oxidation coloring aluminum decorative plate |
| CN114807806A (en) * | 2022-06-13 | 2022-07-29 | 常州市嘉瑞化工有限公司 | Surface passivation process for carbon steel cylinder packaged by chlorotrifluoroethylene |
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| CN1837407A (en) * | 2006-04-19 | 2006-09-27 | 东南大学 | Method for treating surface of magnesium or alloy thereof |
| CN101283065A (en) * | 2005-10-10 | 2008-10-08 | Sscp株式会社 | Low viscosity multi-functional urethane acrylate oligomer-containing high solid uv curable coating compostion |
| CN101519016A (en) * | 2008-02-25 | 2009-09-02 | 联想(北京)有限公司 | Method for making patterns on metal surfaces |
| CN101722778A (en) * | 2008-10-30 | 2010-06-09 | 深圳富泰宏精密工业有限公司 | Method for making housing and housing made by same |
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| CN101283065A (en) * | 2005-10-10 | 2008-10-08 | Sscp株式会社 | Low viscosity multi-functional urethane acrylate oligomer-containing high solid uv curable coating compostion |
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| CN101519016A (en) * | 2008-02-25 | 2009-09-02 | 联想(北京)有限公司 | Method for making patterns on metal surfaces |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104862699A (en) * | 2013-11-21 | 2015-08-26 | 纳米及先进材料研发院有限公司 | Surface treatment method on Micro-arc oxidation treated Mg alloys |
| US10494730B2 (en) | 2016-05-02 | 2019-12-03 | Nano And Advanced Materials Institute Ltd | Surface color treatment of alloys with micro-arc oxidation process |
| CN109082693A (en) * | 2017-06-13 | 2018-12-25 | 昆山汉鼎精密金属有限公司 | Fountain differential arc oxidation method and device |
| CN111334798A (en) * | 2019-10-30 | 2020-06-26 | 宁波劳伦斯汽车内饰件有限公司 | Processing method of precision etching and selective oxidation coloring aluminum decorative plate |
| CN114807806A (en) * | 2022-06-13 | 2022-07-29 | 常州市嘉瑞化工有限公司 | Surface passivation process for carbon steel cylinder packaged by chlorotrifluoroethylene |
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| CN102345126B (en) | 2014-08-20 |
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