CN103668392A - Surface treatment method of magnesium alloy with metal texture and product thereof - Google Patents

Surface treatment method of magnesium alloy with metal texture and product thereof Download PDF

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Publication number
CN103668392A
CN103668392A CN201210337595.0A CN201210337595A CN103668392A CN 103668392 A CN103668392 A CN 103668392A CN 201210337595 A CN201210337595 A CN 201210337595A CN 103668392 A CN103668392 A CN 103668392A
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Prior art keywords
alloy
treatment
magnesium
magnesium alloy
metal
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CN201210337595.0A
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Chinese (zh)
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陈其亮
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Mitac Precision Technology Kunshan Ltd
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Mitac Precision Technology Kunshan Ltd
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Priority to CN201210337595.0A priority Critical patent/CN103668392A/en
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Abstract

The invention discloses a surface treatment method of a magnesium alloy with a metal texture and a product thereof. The method comprises the following steps: pre-treating a magnesium alloy product; degreasing the pre-treated magnesium alloy product in a degreasing agent to remove surface grease; activating the degreased magnesium alloy product by adopting a pickling activator; soaking the activated magnesium alloy product in alkali liquor to carry out surface conditioning treatment; carrying out micro-arc oxidation treatment onto the surface-conditioned magnesium alloy product by adopting micro-arc oxidation liquor; carrying out polishing and/or wire-drawing treatment onto the micro-arc oxidized magnesium alloy product, so that the surface of the product has metal gloss or texture; and spraying or dip-coating inorganic nano paint on the surface of the polished and/or wire-drawn magnesium alloy product. The micro-arc oxidation treatment is carried out onto the product surface or the inorganic nano paint is spayed or drip-coated on the product surface, so that not only is metal texture of the product surface kept, but also the process is simple; and the treated product has higher wear resistance, corrosion resistance, weather resistance and high hardness.

Description

Surface treatment method of Mg alloy of tool metal-like and products thereof
[technical field]
The present invention relates to a kind of surface treatment method of Mg alloy and products thereof, be specifically related to surface treatment method of Mg alloy of a kind of tool metal-like and products thereof.
[background technology]
Because magnesium alloy materials is a kind of lightweight structural material, quality is aluminium 2/3, and 1/4 of iron and steel, compares with engineering materialss such as steel, aluminium, plastics, and it is good that magnesium alloy has strength and stiffness, and capability of electromagnetic shielding is good, nonmagnetic; Shock absorption is good; Nontoxic, recyclable; Fabulous machinability, high Die Casting rate, dimensional contraction is little, and has good low-temperature performance and thermal conductivity high is widely used.
Yet, in order to make magnesium-alloy material keep metal-like, conventionally adopt electric plating method to carry out.Because magnesium metallochemistry performance is active, traditional electro-plating method is difficult to carry out, and therefore must carry out Passivation Treatment, complex process on magnesium-alloy material surface.
In view of this, be necessary to provide a kind for the treatment of process of Mg alloy surface in fact, so that both can reach the requirement of metal-like, solve the problem of complex process simultaneously.
[summary of the invention]
In view of above problem, the object of this invention is to provide surface treatment method of Mg alloy of a kind of tool metal-like and products thereof, thereby can keep magnesium-alloy material surface metal texture and the technique that operates simple.
In order to achieve the above object, the invention provides a kind of surface treatment method of Mg alloy of tool metal-like, it comprises the following steps:
(1) magnesium-alloy material is carried out to pre-treatment;
(2) in grease-removing agent to pretreated magnesium-alloy material degreasing, remove surperficial grease;
(3) magnesium-alloy material after adopting acid-wash activation agent to degreasing activates;
(4) magnesium-alloy material after activation is soaked to show to mediate reason in strong base solution;
(5) magnesium-alloy material of table being mediated after reason adopts microarc oxidation solution to carry out differential arc oxidation processing;
(6) magnesium-alloy material after differential arc oxidation is processed carries out polishing and/or wire drawing is processed, and makes the surface of product have gloss or the texture of metal;
(7) at the magnesium-alloy material surface spraying or the dip-coating inorganic nano paint that carry out after polishing and/or wire drawing are processed.
Optionally, the pre-treatment of described step (1), for Mg alloy surface is carried out to mechanical process, is removed surperficial burr, parting agent and oxide film.
Optionally, in described step (2): the mass percent of grease-removing agent is 3%-10%, is preferably 5%; The temperature of grease-removing agent is 65 ℃-75 ℃, is preferably 70 ℃; Degreasing time is 5-15 minute, is preferably 10 minutes.
Optionally, in described step (3): activator is AC-201; Soak time is 30-60 second, and the temperature of activator is normal temperature.
Optionally, in described step (4): strong base solution is KOH or NaOH; The massfraction of strong base solution is 3%-10%, is preferably 5%; Soak time is 10-60 second, is preferably 10-20 second.
Optionally, in described step (5): described microarc oxidation solution be take distilled water as solvent, comprise the following component that concentration is calculated: water glass 6~15g/L; Sodium Tetraborate 2~5g/L; Potassium hydroxide 3~5g/L; Potassium monofluoride 3~6g/L.
Optionally, in described step (5): it is constant voltage 150V that described differential arc oxidation is processed the voltage passing into, and the time is 10 minutes.
The present invention also provides a kind of Mg alloy surface treating product of tool metal-like, and it is the product producing after the surface treatment method of Mg alloy processing of above-mentioned tool metal-like.
Compared to prior art, surface treatment method of Mg alloy of tool metal-like of the present invention and products thereof, on magnesium-alloy material surface, to carry out differential arc oxidation processing and spraying or dip-coating inorganic nano paint, but not electroplating processes needs the processing steps such as passivation as in the previous, thereby both kept magnesium-alloy material surface metal texture, the technique that makes again to operate is simple.Meanwhile, process the rear product producing and there is higher wear resistance, solidity to corrosion, weathering resistance and high rigidity.
[accompanying drawing explanation]
Fig. 1 illustrates the schema of the surface treatment method of Mg alloy of tool metal-like of the present invention.
[embodiment]
For object of the present invention, method steps and function are had to further understanding, refer to Fig. 1, and be described in detail as follows:
In order to achieve the above object, the invention provides a kind of surface treatment method of Mg alloy of tool metal-like, it comprises the following steps:
Step 101 a: magnesium-alloy material is provided, magnesium-alloy material is carried out to pre-treatment;
Step 102: to pretreated magnesium-alloy material degreasing, remove surperficial grease in grease-removing agent;
Step 103: the magnesium-alloy material after adopting acid-wash activation agent to degreasing activates;
Step 104: the magnesium-alloy material after activation is soaked to show to mediate reason in strong base solution;
Step 105: the magnesium-alloy material that table is mediated after reason adopts microarc oxidation solution to carry out differential arc oxidation processing;
Step 106: the magnesium-alloy material after differential arc oxidation is processed carries out polishing and/or wire drawing is processed, makes the surface of product have gloss or the texture of metal.
Step 107: at the magnesium-alloy material surface spraying or the dip-coating inorganic nano paint that carry out after polishing and/or wire drawing are processed.
Wherein, the pre-treatment of described step 101 can, for Mg alloy surface is carried out to mechanical process, be removed surperficial burr, parting agent and oxide film.
Wherein, in described step 102: the mass percent of grease-removing agent can be 3%-10%, is preferably 5%; The temperature of grease-removing agent can, for 65 ℃-75 ℃, be preferably 70 ℃; Degreasing time can be 5-15 minute, is preferably 10 minutes.
Wherein, in described step 103: activator can be AC-201; Soak time can be 30-60 second, and the temperature of activator can be normal temperature.
Wherein, in described step 104: strong base solution can be KOH or NaOH; The massfraction of strong base solution can be 3%-10%, is preferably 5%; Soak time can be 10-60 second, is preferably 10-20 second.
Wherein, in described step 105: described microarc oxidation solution be take distilled water as solvent, comprise the following component that concentration is calculated: water glass 6~15g/L; Sodium Tetraborate 2~5g/L; Potassium hydroxide 3~5g/L; Potassium monofluoride 3~6g/L.Said components can adopt and adopt respectively following crystal or powder to come proportioning Na2SiO39H2O, Na2B4O710H2O, KOH, KF2H2O3.Carry out after described differential arc oxidation processing, described Mg alloy surface can form the canescence oxide film of one deck densification.
Wherein, in described step 105: it is constant voltage 150V that described differential arc oxidation is processed the voltage passing into, and the time is 10 minutes.
The present invention also provides a kind of Mg alloy surface treating product of tool metal-like, and it is the product producing after the surface treatment method of Mg alloy processing of above-mentioned tool metal-like.
Refer to following table, following table is the performance test table of the product of generation after the surface treatment method of Mg alloy of tool metal-like of the present invention is processed.
Compared to prior art, surface treatment method of Mg alloy of tool metal-like of the present invention and products thereof, on magnesium-alloy material surface, to carry out differential arc oxidation processing and spraying or dip-coating inorganic nano paint, but not electroplating processes needs the processing steps such as passivation as in the previous, thereby both kept magnesium-alloy material surface metal texture, the technique that makes again to operate is simple.Meanwhile, process the rear product producing and there is higher wear resistance, solidity to corrosion, weathering resistance and high rigidity.
Be pointed out that, the invention is not restricted to above-mentioned embodiment, any simple modification, equivalent variations and modification that any those skilled in the art do above-described embodiment based on technical solution of the present invention, all fall within the scope of protection of the present invention.

Claims (8)

1. a surface treatment method of Mg alloy for tool metal-like, is characterized in that, comprises the following steps:
(1) magnesium-alloy material is carried out to pre-treatment;
(2) in grease-removing agent to pretreated magnesium-alloy material degreasing, remove surperficial grease;
(3) magnesium-alloy material after adopting acid-wash activation agent to degreasing activates;
(4) magnesium-alloy material after activation is soaked to show to mediate reason in strong base solution;
(5) magnesium-alloy material of table being mediated after reason adopts microarc oxidation solution to carry out differential arc oxidation processing;
(6) magnesium-alloy material after differential arc oxidation is processed carries out polishing and/or wire drawing is processed, and makes the surface of product have gloss or the texture of metal;
(7) at the magnesium-alloy material surface spraying or the dip-coating inorganic nano paint that carry out after polishing and/or wire drawing are processed.
2. the surface treatment method of Mg alloy of tool metal-like as claimed in claim 1, is characterized in that, the pre-treatment of described step (1), for Mg alloy surface is carried out to mechanical process, is removed surperficial burr, parting agent and oxide film.
3. the surface treatment method of Mg alloy of tool metal-like as claimed in claim 1, is characterized in that, in described step (2): the mass percent of grease-removing agent is 3%-10%; The temperature of grease-removing agent is 65 ℃-75 ℃; Degreasing time is 5-15 minute.
4. the surface treatment method of Mg alloy of tool metal-like as claimed in claim 1, is characterized in that, in described step (3): activator is AC-201; Soak time is 30-60 second; The temperature of activator is normal temperature.
5. the surface treatment method of Mg alloy of tool metal-like as claimed in claim 1, is characterized in that, in described step (4): strong base solution is KOH or NaOH; The massfraction of strong base solution is 3%-10%; Soak time is 10-60 second.
6. the surface treatment method of Mg alloy of tool metal-like as claimed in claim 1, is characterized in that, in described step (5): described microarc oxidation solution be take distilled water as solvent, comprises the following component that concentration is calculated: water glass 6~15g/L; Sodium Tetraborate 2~5g/L; Potassium hydroxide 3~5g/L; Potassium monofluoride 3~6g/L.
7. the surface treatment method of Mg alloy of tool metal-like as claimed in claim 1, is characterized in that, in described step (6): it is constant voltage 150V that described differential arc oxidation is processed the voltage passing into, and the time is 10 minutes.
8. a Mg alloy surface treating product for tool metal-like, it is the magnesium-alloy material producing after the surface treatment method of Mg alloy of the tool metal-like as described in any one in claim 1-7 is processed.
CN201210337595.0A 2012-09-13 2012-09-13 Surface treatment method of magnesium alloy with metal texture and product thereof Pending CN103668392A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107295765A (en) * 2017-06-19 2017-10-24 无锡市恒利弘实业有限公司 A kind of plastics mobile terminal shell of metal-like

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4620904A (en) * 1985-10-25 1986-11-04 Otto Kozak Method of coating articles of magnesium and an electrolytic bath therefor
CN101113519A (en) * 2006-07-28 2008-01-30 佛山市顺德区汉达精密电子科技有限公司 Magnesium alloy surface treatment technique
CN101634044A (en) * 2009-09-01 2010-01-27 李扬德 Phosphatization and micro-arc oxidation compound treatment method of magnesium alloy surface
CN101942689A (en) * 2010-10-09 2011-01-12 东莞宜安电器制品有限公司 Micro-arc oxidation treatment method of magnesium alloy
CN102114750A (en) * 2010-01-04 2011-07-06 中镁科技(上海)有限公司 Manufacture method for appearence of magnesium alloy
US20110303545A1 (en) * 2010-06-09 2011-12-15 Nuc Electronics Co., Ltd. Method for treating surface of magnesium-based metal to give metallic texture thereof
CN102560302A (en) * 2012-01-19 2012-07-11 河海大学 Combined processing method for preparing anti-corrosion AZ91D magnesium alloy with obdurability

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4620904A (en) * 1985-10-25 1986-11-04 Otto Kozak Method of coating articles of magnesium and an electrolytic bath therefor
CN101113519A (en) * 2006-07-28 2008-01-30 佛山市顺德区汉达精密电子科技有限公司 Magnesium alloy surface treatment technique
CN101634044A (en) * 2009-09-01 2010-01-27 李扬德 Phosphatization and micro-arc oxidation compound treatment method of magnesium alloy surface
CN102114750A (en) * 2010-01-04 2011-07-06 中镁科技(上海)有限公司 Manufacture method for appearence of magnesium alloy
US20110303545A1 (en) * 2010-06-09 2011-12-15 Nuc Electronics Co., Ltd. Method for treating surface of magnesium-based metal to give metallic texture thereof
CN101942689A (en) * 2010-10-09 2011-01-12 东莞宜安电器制品有限公司 Micro-arc oxidation treatment method of magnesium alloy
CN102560302A (en) * 2012-01-19 2012-07-11 河海大学 Combined processing method for preparing anti-corrosion AZ91D magnesium alloy with obdurability

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107295765A (en) * 2017-06-19 2017-10-24 无锡市恒利弘实业有限公司 A kind of plastics mobile terminal shell of metal-like
CN107295765B (en) * 2017-06-19 2019-10-25 无锡市恒利弘实业有限公司 A kind of plastics mobile terminal shell of metal-like

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