CN103469282A - Preprocessing method of magnesium alloy electro-coating technology - Google Patents
Preprocessing method of magnesium alloy electro-coating technology Download PDFInfo
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- CN103469282A CN103469282A CN2013104521963A CN201310452196A CN103469282A CN 103469282 A CN103469282 A CN 103469282A CN 2013104521963 A CN2013104521963 A CN 2013104521963A CN 201310452196 A CN201310452196 A CN 201310452196A CN 103469282 A CN103469282 A CN 103469282A
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- magnesium alloy
- phosphating solution
- phosphating
- coating technique
- pretreatment process
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- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 55
- 238000004070 electrodeposition Methods 0.000 title abstract description 7
- 238000005516 engineering process Methods 0.000 title abstract description 6
- 238000007781 pre-processing Methods 0.000 title abstract 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 18
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims abstract description 18
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims abstract description 18
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 9
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims abstract description 9
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 claims abstract description 9
- 239000011609 ammonium molybdate Substances 0.000 claims abstract description 9
- 235000018660 ammonium molybdate Nutrition 0.000 claims abstract description 9
- 229940010552 ammonium molybdate Drugs 0.000 claims abstract description 9
- 239000011775 sodium fluoride Substances 0.000 claims abstract description 9
- 235000013024 sodium fluoride Nutrition 0.000 claims abstract description 9
- 235000010344 sodium nitrate Nutrition 0.000 claims abstract description 9
- 239000004317 sodium nitrate Substances 0.000 claims abstract description 9
- 239000011787 zinc oxide Substances 0.000 claims abstract description 9
- 238000001962 electrophoresis Methods 0.000 claims description 37
- 238000000576 coating method Methods 0.000 claims description 33
- 239000011248 coating agent Substances 0.000 claims description 32
- 230000008569 process Effects 0.000 claims description 21
- 102000004160 Phosphoric Monoester Hydrolases Human genes 0.000 claims description 8
- 108090000608 Phosphoric Monoester Hydrolases Proteins 0.000 claims description 8
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 8
- 239000004141 Sodium laurylsulphate Substances 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 8
- 238000005238 degreasing Methods 0.000 claims description 8
- VGYYSIDKAKXZEE-UHFFFAOYSA-L hydroxylammonium sulfate Chemical compound O[NH3+].O[NH3+].[O-]S([O-])(=O)=O VGYYSIDKAKXZEE-UHFFFAOYSA-L 0.000 claims description 8
- 238000005554 pickling Methods 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 235000019333 sodium laurylsulphate Nutrition 0.000 claims description 8
- 229940001516 sodium nitrate Drugs 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 abstract description 14
- 238000005260 corrosion Methods 0.000 abstract description 14
- 150000002696 manganese Chemical class 0.000 abstract description 3
- 150000002815 nickel Chemical class 0.000 abstract description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract 2
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 abstract 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract 1
- NXPHCVPFHOVZBC-UHFFFAOYSA-N hydroxylamine;sulfuric acid Chemical compound ON.OS(O)(=O)=O NXPHCVPFHOVZBC-UHFFFAOYSA-N 0.000 abstract 1
- 238000010422 painting Methods 0.000 description 5
- 230000002000 scavenging effect Effects 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 230000002421 anti-septic effect Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 238000002203 pretreatment Methods 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 230000006399 behavior Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Chemical Treatment Of Metals (AREA)
Abstract
The invention discloses a preprocessing method of the magnesium alloy electro-coating technology. The preprocessing method comprises the step of carrying out phosphating processing on a magnesium alloy workpiece in a phosphating solution. The formula of the phosphating solution comprises the components of 15-20g/L of zinc oxide, 10-15ml/L of phosphoric acid, 3-5g/L of sodium fluoride, 10-12g/L of sodium nitrate, 2-3g/L of ammonium molybdate, 4-8g/L of hydroxylamine sulphate, and 4-5g/L of lauryl sodium sulfate. The PH value of the phosphating solution is 3-5, the temperature of the phosphating solution is 40-50DEG C, the phosphating time is 15-20 minutes, and 2-3g/L of nickel nitrate and 4-8g/L of manganous nitrate are further added into the phosphating solution. According to the preprocessing method, when phosphating processing is carried out on the magnesium alloy workpiece, the nickel salt and the manganese salt are added in the phosphating solution, therefore, the tissue structure of a phosphating film is effectively improved, the follow-up electro-coating technology is optimized, and the film obtained through the electro-coating technology has the excellent corrosion resistance.
Description
Technical field
The present invention relates to the metal material surface processing technology field, relate in particular to a kind of pretreatment process of magnesium alloy electrophoresis coating technique.
Background technology
Magnesium alloy has the high-performances such as specific tenacity is high, the mechanical workout energy is good, cushioning ability is good, thermal conductivity is good, electromagnetic wave shielding is good, hydrogen storage property is good, high, the easy machining of Die Casting rate, easy recovery, it is a kind of light metal structure material of superior performance, magnesium alloy, as the alloy structure material of high-quality, is used widely in industries such as aerospace, automobile, electronics and medical devices.
But the solidity to corrosion of magnesium is poor, in the process of application, easily be corroded.The type of Corrosion Behaviors of Magnesium Alloys is a lot, according to corrosive property, can be divided into galvanic corrosion, stress corrosion crack, corrosion fatigue, intergranular corrosion, filiform corrosion, crevice corrosion etc.; The solidity to corrosion of magnesium alloy is restricting the deep exploitation of magnesium alloy and in the popularization of every profession and trade all the time.Therefore, carry out the Corrosion Behaviors of Magnesium Alloys Protective Research, application and the popularization of magnesium alloy had a very big significance.
Improve the solidity to corrosion of magnesium alloy, mainly from two aspects: change the microstructure of magnesium alloy and magnesium alloy is carried out to surface treatment.Wherein, magnesium alloy being carried out to surface treatment, is the important method that improves corrosion stability of magnesium alloy.According to different solidity to corrosion requirements, and the character of different types of magnesium alloy, the treatment processs such as chemical conversion treatment reason, anodic oxidation treatment, differential arc oxidation processing, vapour deposition, plating, electroless plating, thermospray, organic coating can be selected.
Electrophoresis application technique has possessed good environmental-protecting performance, and can access well behaved organic coating.Electrophoretic painting is having the very high feature of environmental protection aspect used organic compound and application mode.At first electrophoretic painting coating used is water soluble paint, in formula, more than 80%, is moisture, volatile solvent seldom, to the pollution of environment also corresponding diminishing; Secondly, electrophoretic painting coating used is acrylic resin or epoxy resin, little to the toxicity of human body; Again, the repeating utilization factor of electrocoating paint is high, and in coating process, the loss of coating is less.In the magnesium alloy electrophoresis coating technique, the pre-treatment of magnesium alloy work-piece surface plays very important effect to coating performance.
Summary of the invention
In view of the deficiencies in the prior art, the invention provides a kind of pretreatment process of magnesium alloy electrophoresis coating technique, obtain uniform phosphatize phosphate coat at magnesium alloy work-piece surface, optimized follow-up electrophoresis coating technique, make the rete that electrophoresis coating technique obtains there is superior antiseptic property, for favourable condition has been created in the Industry Promotion application of magnesium alloy.
The technical solution adopted for the present invention to solve the technical problems is: a kind of pretreatment process of magnesium alloy electrophoresis coating technique, comprise and magnesium alloy workpiece is carried out in Phosphating Solution to parkerized step, wherein, the formula of described Phosphating Solution is: zinc oxide 15～20g/L, phosphatase 11 0～15ml/L, Sodium Fluoride 3～5g/L, SODIUMNITRATE 10～12g/L, ammonium molybdate 2～3g/L, oxammonium sulfate 4～8g/L, sodium lauryl sulphate 4～5g/L, the pH value of described Phosphating Solution is 3～5; The temperature of Phosphating Solution is 40～50 ℃, and phosphating time is 15～20min; Wherein, described Phosphating Solution also adds the nickelous nitrate of 2～3g/L and the manganous nitrate of 4～8g/L.
Wherein, before carrying out bonderizing, also comprise the step of the greasy dirt of the aqueous cleaning removal magnesium alloy work-piece surface that adopts the magnesium alloy degreasing powder, described magnesium alloy degreasing powder is the FG-02 type.
Wherein, after the greasy dirt of removing magnesium alloy work-piece surface, also comprise the oxide compound step of the aqueous cleaning removal magnesium alloy work-piece surface that adopts the magnesium alloy pickling agent, described magnesium alloy pickling agent is the FG-031 type.
Preferably, the formula of described Phosphating Solution is: zinc oxide 15g/L, phosphatase 11 0ml/L, Sodium Fluoride 5g/L, SODIUMNITRATE 12g/L, ammonium molybdate 2g/L, oxammonium sulfate 4g/L, sodium lauryl sulphate 4g/L, wherein, described Phosphating Solution also adds the nickelous nitrate of 2g/L and the manganous nitrate of 8g/L.
Preferably, the formula of described Phosphating Solution is: zinc oxide 20g/L, phosphatase 11 5ml/L, Sodium Fluoride 3g/L, SODIUMNITRATE 10g/L, ammonium molybdate 3g/L, oxammonium sulfate 8g/L, sodium lauryl sulphate 5g/L, wherein, described Phosphating Solution also adds the nickelous nitrate of 3g/L and the manganous nitrate of 4g/L.
Preferably, the pH value of described Phosphating Solution is 3; The temperature of Phosphating Solution is 50 ℃, and phosphating time is 20min.
Preferably, the pH value of described Phosphating Solution is 5; The temperature of Phosphating Solution is 40 ℃, and phosphating time is 15min.
The pretreatment process of magnesium alloy electrophoresis coating technique provided by the invention, when magnesium alloy workpiece is carried out to bonderizing, nickel salt and manganese salt have been added in Phosphating Solution, effectively improved the weave construction of phosphatize phosphate coat, optimized follow-up electrophoresis coating technique, make the rete that electrophoresis coating technique obtains there is superior antiseptic property, for favourable condition has been created in the Industry Promotion application of magnesium alloy.
Embodiment
The present invention is further detailed explanation in conjunction with specific embodiments now.
Embodiment 1
The pretreatment process of the magnesium alloy electrophoresis coating technique that the present embodiment provides comprises step:
(a) adopt the greasy dirt of the aqueous cleaning removal magnesium alloy work-piece surface of magnesium alloy degreasing powder; Wherein, the magnesium alloy degreasing powder is the FG-02 type, and scavenging period is 10～15min;
(b) adopt the oxide compound of the aqueous cleaning removal magnesium alloy work-piece surface of magnesium alloy pickling agent; Wherein, the magnesium alloy pickling agent is the FG-031 type, and scavenging period is 3～5min;
(c) magnesium alloy workpiece is carried out in Phosphating Solution to bonderizing; Wherein, the formula of Phosphating Solution is: zinc oxide 15g/L, and phosphatase 11 0ml/L, Sodium Fluoride 5g/L, SODIUMNITRATE 12g/L, ammonium molybdate 2g/L, oxammonium sulfate 4g/L, sodium lauryl sulphate 4g/L, the pH value of Phosphating Solution is 3; The temperature of Phosphating Solution is 50 ℃, and phosphating time is 20min; Wherein, described Phosphating Solution also adds the nickelous nitrate of 2g/L and the manganous nitrate of 8g/L.
After magnesium alloy workpiece is carried out to pre-treatment as above, the present embodiment has also carried out electrophoresis coating technique to magnesium alloy workpiece, comprises the following steps:
(1) magnesium alloy workpiece is carried out to cathode electro-coating, cathode electrophoresis dope used is the epoxy acrylic cathode electrophoresis dope; Electrophoresis process is: solid part 16%, electrophoretic voltage 160V, 40 ℃ of electrophoresis temperatures, electrophoresis time 8min;
(2) workpiece after electrophoretic painting is cured to baking, temperature is that 140 ℃, time are 20min.
According to above technique, the coat-thickness obtained at Mg alloy surface is even, and color, sticking power, luminance brightness are fabulous, and hardness is higher, has good erosion resistance.
Embodiment 2
The pretreatment process of the magnesium alloy electrophoresis coating technique that the present embodiment provides comprises step:
(a) adopt the greasy dirt of the aqueous cleaning removal magnesium alloy work-piece surface of magnesium alloy degreasing powder; Wherein, the magnesium alloy degreasing powder is the FG-02 type, and scavenging period is 10～15min;
(b) adopt the oxide compound of the aqueous cleaning removal magnesium alloy work-piece surface of magnesium alloy pickling agent; Wherein, the magnesium alloy pickling agent is the FG-031 type, and scavenging period is 3～5min;
(c) magnesium alloy workpiece is carried out in Phosphating Solution to bonderizing; Wherein, the formula of Phosphating Solution is: zinc oxide 20g/L, and phosphatase 11 5ml/L, Sodium Fluoride 3g/L, SODIUMNITRATE 10g/L, ammonium molybdate 3g/L, oxammonium sulfate 8g/L, sodium lauryl sulphate 5g/L, the pH value of Phosphating Solution is 5; The temperature of Phosphating Solution is 40 ℃, and phosphating time is 15min; Wherein, described Phosphating Solution also adds the nickelous nitrate of 3g/L and the manganous nitrate of 4g/L.
After magnesium alloy workpiece is carried out to pre-treatment as above, the present embodiment has also carried out electrophoresis coating technique to magnesium alloy workpiece, comprises the following steps:
(1) magnesium alloy workpiece is carried out to cathode electro-coating, cathode electrophoresis dope used is the epoxy acrylic cathode electrophoresis dope; Electrophoresis process is: solid part 21%, electrophoretic voltage 170V, 35 ℃ of electrophoresis temperatures, electrophoresis time 5min;
(2) workpiece after electrophoretic painting is cured to baking, temperature is that 160 ℃, time are 15min.
According to above technique, the coat-thickness obtained at Mg alloy surface is even, and color, sticking power, luminance brightness are fabulous, and hardness is higher, has good erosion resistance.
More than comprehensive, the pretreatment process of magnesium alloy electrophoresis coating technique provided by the invention, when magnesium alloy workpiece is carried out to bonderizing, nickel salt and manganese salt have been added in Phosphating Solution, effectively improved the weave construction of phosphatize phosphate coat, optimized follow-up electrophoresis coating technique, made the rete that electrophoresis coating technique obtains there is superior antiseptic property, for favourable condition has been created in the Industry Promotion application of magnesium alloy.
The above-mentioned foundation desirable embodiment of the present invention of take is enlightenment, and by above-mentioned description, the relevant staff can, in the scope that does not depart from this invention technological thought, carry out various change and modification fully.The technical scope of this invention is not limited to the content on specification sheets, must determine its technical scope according to the claim scope.
Claims (9)
1. the pretreatment process of a magnesium alloy electrophoresis coating technique, it is characterized in that, comprise and magnesium alloy workpiece is carried out in Phosphating Solution to parkerized step, the formula of described Phosphating Solution is: zinc oxide 15～20g/L, phosphatase 11 0～15ml/L, Sodium Fluoride 3～5g/L, SODIUMNITRATE 10～12g/L, ammonium molybdate 2～3g/L, oxammonium sulfate 4～8g/L, sodium lauryl sulphate 4～5g/L, the pH value of described Phosphating Solution is 3～5; The temperature of Phosphating Solution is 40～50 ℃, and phosphating time is 15～20min; Wherein, described Phosphating Solution also adds the nickelous nitrate of 2～3g/L and the manganous nitrate of 4～8g/L.
2. the pretreatment process of magnesium alloy electrophoresis coating technique according to claim 1, is characterized in that, before carrying out bonderizing, also comprises the step of the greasy dirt of the aqueous cleaning removal magnesium alloy work-piece surface that adopts the magnesium alloy degreasing powder.
3. the pretreatment process of magnesium alloy electrophoresis coating technique according to claim 2, is characterized in that, described magnesium alloy degreasing powder is the FG-02 type.
4. the pretreatment process of magnesium alloy electrophoresis coating technique according to claim 2, it is characterized in that, after the greasy dirt of removing magnesium alloy work-piece surface, also comprise the oxide compound step of the aqueous cleaning removal magnesium alloy work-piece surface that adopts the magnesium alloy pickling agent.
5. the pretreatment process of magnesium alloy electrophoresis coating technique according to claim 4, is characterized in that, described magnesium alloy pickling agent is the FG-031 type.
6. the pretreatment process of magnesium alloy electrophoresis coating technique according to claim 1, it is characterized in that, the formula of described Phosphating Solution is: zinc oxide 15g/L, phosphatase 11 0ml/L, Sodium Fluoride 5g/L, SODIUMNITRATE 12g/L, ammonium molybdate 2g/L, oxammonium sulfate 4g/L, sodium lauryl sulphate 4g/L, wherein, described Phosphating Solution also adds the nickelous nitrate of 2g/L and the manganous nitrate of 8g/L.
7. the pretreatment process of magnesium alloy electrophoresis coating technique according to claim 1, it is characterized in that, the formula of described Phosphating Solution is: zinc oxide 20g/L, phosphatase 11 5ml/L, Sodium Fluoride 3g/L, SODIUMNITRATE 10g/L, ammonium molybdate 3g/L, oxammonium sulfate 8g/L, sodium lauryl sulphate 5g/L, wherein, described Phosphating Solution also adds the nickelous nitrate of 3g/L and the manganous nitrate of 4g/L.
8. the pretreatment process of magnesium alloy electrophoresis coating technique according to claim 1, is characterized in that, the pH value of described Phosphating Solution is 3; The temperature of Phosphating Solution is 50 ℃, and phosphating time is 20min.
9. the pretreatment process of magnesium alloy electrophoresis coating technique according to claim 1, is characterized in that, the pH value of described Phosphating Solution is 5; The temperature of Phosphating Solution is 40 ℃, and phosphating time is 15min.
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| CN2013104521963A CN103469282A (en) | 2013-09-27 | 2013-09-27 | Preprocessing method of magnesium alloy electro-coating technology |
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| CN2013104521963A CN103469282A (en) | 2013-09-27 | 2013-09-27 | Preprocessing method of magnesium alloy electro-coating technology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018152A (en) * | 2014-06-11 | 2014-09-03 | 张家港保税区冠祥贸易有限公司 | Surface treating agent for magnesium alloy |
| CN104032294A (en) * | 2014-06-11 | 2014-09-10 | 张家港沙龙精密管业有限公司 | Surface treatment process of magnesium alloy product |
| CN104988562A (en) * | 2015-07-02 | 2015-10-21 | 镇江市宝华半挂车配件有限公司 | Electrophoresis processing method for casting part |
| CN105369238A (en) * | 2015-11-23 | 2016-03-02 | 安徽千和新材料科技发展有限公司 | Normal-temperature non-slag phosphating solution used before electrophoresis of galvanized steel sheet for automobile and preparation method of normal-temperature non-slag phosphating solution |
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| CN100519840C (en) * | 2007-11-14 | 2009-07-29 | 哈尔滨工程大学 | Magnesium alloy surface phosphorization treatment method |
| CN101629287A (en) * | 2009-08-17 | 2010-01-20 | 浙江省缙云县三鼎实业有限公司 | Magnesium alloy surface treatment process |
| CN101643928A (en) * | 2009-09-09 | 2010-02-10 | 重庆科技学院 | Method for electrodepositing phosphate/metal composite film on cathode of surface of magnesium alloy |
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| CN100519840C (en) * | 2007-11-14 | 2009-07-29 | 哈尔滨工程大学 | Magnesium alloy surface phosphorization treatment method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018152A (en) * | 2014-06-11 | 2014-09-03 | 张家港保税区冠祥贸易有限公司 | Surface treating agent for magnesium alloy |
| CN104032294A (en) * | 2014-06-11 | 2014-09-10 | 张家港沙龙精密管业有限公司 | Surface treatment process of magnesium alloy product |
| CN104988562A (en) * | 2015-07-02 | 2015-10-21 | 镇江市宝华半挂车配件有限公司 | Electrophoresis processing method for casting part |
| CN105369238A (en) * | 2015-11-23 | 2016-03-02 | 安徽千和新材料科技发展有限公司 | Normal-temperature non-slag phosphating solution used before electrophoresis of galvanized steel sheet for automobile and preparation method of normal-temperature non-slag phosphating solution |
| CN105369238B (en) * | 2015-11-23 | 2017-11-14 | 安徽千和新材料科技发展有限公司 | Normal temperature is without slag phosphating solution and preparation method thereof before Progress in Automobile Galvanized Steel Sheets electrophoresis |
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Application publication date: 20131225 |