CN101831661A - Zinc alloy acid-washing solution and zinc alloy acid-washing treating process - Google Patents
Zinc alloy acid-washing solution and zinc alloy acid-washing treating process Download PDFInfo
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- CN101831661A CN101831661A CN 201010143500 CN201010143500A CN101831661A CN 101831661 A CN101831661 A CN 101831661A CN 201010143500 CN201010143500 CN 201010143500 CN 201010143500 A CN201010143500 A CN 201010143500A CN 101831661 A CN101831661 A CN 101831661A
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- Prior art keywords
- zinc alloy
- acid
- washing
- acidwash solution
- pickling
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- 229910001297 Zn alloy Inorganic materials 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title abstract description 11
- 238000005406 washing Methods 0.000 title abstract 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims abstract description 9
- 239000002904 solvent Substances 0.000 claims abstract description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 30
- 238000005554 pickling Methods 0.000 claims description 22
- 238000005516 engineering process Methods 0.000 claims description 14
- 238000010306 acid treatment Methods 0.000 claims description 12
- 238000007747 plating Methods 0.000 claims description 2
- 238000002203 pretreatment Methods 0.000 claims description 2
- 239000002253 acid Substances 0.000 abstract description 8
- 239000011248 coating agent Substances 0.000 abstract description 7
- 238000000576 coating method Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
- 238000005238 degreasing Methods 0.000 abstract 1
- 238000009713 electroplating Methods 0.000 abstract 1
- 235000010299 hexamethylene tetramine Nutrition 0.000 abstract 1
- 239000004312 hexamethylene tetramine Substances 0.000 abstract 1
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 abstract 1
- 229910021653 sulphate ion Inorganic materials 0.000 abstract 1
- 238000005187 foaming Methods 0.000 description 6
- 230000003628 erosive effect Effects 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 238000007598 dipping method Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000004506 ultrasonic cleaning Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention relates to a zinc alloy acid-washing treating process. The process comprises the following steps of: 1. pretreatment: degreasing and cleaning the zinc alloy workpiece; 2. acid washing: immersing the zinc alloy workpiece treated in step 1 into a zinc alloy acid-washing solution which uses water as the solvent and contains 200-300ml/L sulphate, 10-30ml/L hydrochloric acid, and 5-10g/l hexamine; and 3. post-treatment: cleaning, electroplating or coating the workpiece treated in step 2. In step 2, the acid washing temperature is 10-40 DEG C, and the acid washing time is 5-120 s. Compared with the prior art, the zinc alloy acid-washing solution contains few components, and is simple to prepare. The acid-washing process which utilizes the acid-washing solution to remove the oxide film from the surface of the zinc alloy has the advantages of simple operation, easy control, good removing effect on the oxide film, good gloss of the acid-washed surface and smooth surface and can be used together with other chemical treating processes.
Description
Technical field
The present invention relates to a kind of metal surface treatment process, especially relate to a kind of zinc alloy Acidwash solution and zinc alloy cleanup acid treatment technology.
Background technology
The zinc alloy fusing point is low, than great, and good fluidity, plastic working has good normal temperature mechanical property and wear resistance, and maimed material is convenient to advantages such as recovery and remelting.Zinc alloy surface generates one deck natural oxide film easily, and pickling fails oxide film is eliminated, then bubble behind the electro dipping, and the pickling overlong time, etched the matrix causes matrix rugged easily.Invent a rational pickling prescription, help zinc alloy surface and eliminate oxide film, prevent the effect of matrix metal excessive erosion simultaneously.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of zinc alloy Acidwash solution and zinc alloy cleanup acid treatment technology, can effectively eliminate the oxide film of zinc alloy surface, prevents the excessive erosion of zinc alloy matrix in acid cleaning process simultaneously.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of zinc alloy Acidwash solution, the solvent of described zinc alloy Acidwash solution is a water, contains: sulfuric acid 200～300ml/L, hydrochloric acid 10～30ml/L, vulkacit H 5～10g/L.
A kind of zinc alloy cleanup acid treatment technology may further comprise the steps:
Step 1: pre-treatment, zinc alloy workpiece is carried out oil removing, cleaning;
Step 2: pickling impregnated in oil removing, cleaned zinc alloy workpiece in the zinc alloy Acidwash solution; Wherein, the solvent of zinc alloy Acidwash solution is a water, contains: sulfuric acid 200～300ml/L, hydrochloric acid 10～30ml/L, vulkacit H 5～10g/L.
Step 3: aftertreatment, with the workpiece after the pickling clean, plating or application handle.
For optimizing technique scheme, the measure of taking also comprises:
Above-mentioned sulfuric acid is industry sulfuric acid commonly used, and concentration is 98% (volume ratio).
Above-mentioned hydrochloric acid is industry hydrochloric acid commonly used, and concentration is 37% (volume ratio).
Above-mentioned zinc alloy Acidwash solution contains sulfuric acid 250ml/L, hydrochloric acid 20ml/L, vulkacit H 7.5g/L.
The pickling temperature of step 2 is 10～40 ℃ in the above-mentioned zinc alloy cleanup acid treatment technology.
The pickling time of step 2 is 5～120 seconds in the above-mentioned zinc alloy cleanup acid treatment technology.
The zinc alloy Acidwash solution of step 2 contains in the above-mentioned zinc alloy cleanup acid treatment technology: sulfuric acid 200～300ml/L, hydrochloric acid 10～30ml/L, vulkacit H 5～10g/L; Pickling temperature is 25 ℃, and the pickling time is 60 seconds.
Compared with prior art, zinc alloy Acidwash solution composition of the present invention is few, preparation is simple, it is simple to operate to utilize this Acidwash solution to carry out the acid cleaning process of zinc alloy surface oxide film dissolving, be easy to control, the removal effect of oxide film is good, and pickling face glossiness is good, surfacing, and can mix with other chemical treatment links and use.
Embodiment
Embodiment 1:
Preparation zinc alloy Acidwash solution, wherein comprise: sulfuric acid 200ml/L, hydrochloric acid 10ml/L, vulkacit H 5g/L, get a zinc alloy sample and carry out oil removing, ultrasonic cleaning successively, and then this sample be impregnated in the zinc alloy Acidwash solution of above-mentioned configuration, it is 10 ℃ that pickling temperature is set, flood after 30 seconds and to take out water Xian of sample elder generation and dry again, electroplate then.After this sample was handled through such acid cleaning process, sample surfaces was smooth, light, and it is non-foaming through 240 ℃ of bakings 10 minutes to electroplate back coating.
Embodiment 2:
Preparation zinc alloy Acidwash solution, wherein comprise: sulfuric acid 300ml/L, hydrochloric acid 30ml/L, vulkacit H 10g/L, get a zinc alloy sample and carry out oil removing, ultrasonic cleaning successively, and then this sample be impregnated in the zinc alloy Acidwash solution of above-mentioned configuration, it is 30 ℃ that pickling temperature is set, flood after 120 seconds and to take out water Xian of sample elder generation and dry again, electroplate then.After this sample was handled through such acid cleaning process, sample surfaces was smooth, light, and it is non-foaming through 240 ℃ of bakings 10 minutes to electroplate back coating.
Embodiment 3:
Preparation zinc alloy Acidwash solution, wherein comprise: sulfuric acid 300ml/L, hydrochloric acid 10ml/L, vulkacit H 8g/L, get a zinc alloy sample and carry out oil removing, ultrasonic cleaning successively, and then this sample be impregnated in the zinc alloy Acidwash solution of above-mentioned configuration, it is 20 ℃ that pickling temperature is set, flood after 120 seconds and to take out water Xian of sample elder generation and dry again, electroplate then.After this sample was handled through such acid cleaning process, sample surfaces was smooth, light, and it is non-foaming through 240 ℃ of bakings 10 minutes to electroplate back coating.
Embodiment 4:
Preparation zinc alloy Acidwash solution, wherein comprise: sulfuric acid 250ml/L, hydrochloric acid 20ml/L, vulkacit H 7.5g/L, get a zinc alloy sample and carry out oil removing, ultrasonic cleaning successively, and then this sample be impregnated in the zinc alloy Acidwash solution of above-mentioned configuration, it is 25 ℃ that pickling temperature is set, flood after 60 seconds and to take out water Xian of sample elder generation and dry again, right
Embodiment 5:
Other condition is with embodiment 1, and different is with the pickling temperature among the embodiment 1 is 20 ℃, the sample dipping is taken out water Xian of sample elder generation dry after 100 seconds, electroplates then.Sample surfaces after the processing is smooth, light, and no excessive erosion, it is non-foaming through 240 ℃ of bakings 10 minutes to electroplate back coating.
Embodiment 6:
Other condition is with embodiment 2, and different is with the pickling temperature among the embodiment 1 is 40 ℃, the sample dipping is taken out water Xian of sample elder generation dry after 5 seconds, electroplates then.Sample surfaces after the processing is smooth, light, and no excessive erosion, it is non-foaming through 240 ℃ of bakings 10 minutes to electroplate back coating.
Embodiment 7:
Other condition is with embodiment 3, and different is with the pickling temperature among the embodiment 3 is 30 ℃, the sample dipping is taken out water Xian of sample elder generation dry after 80 seconds, electroplates then.Sample surfaces after the processing is smooth, light, and no excessive erosion, it is non-foaming through 240 ℃ of bakings 10 minutes to electroplate back coating.
More than the sulfuric acid and the hydrochloric acid that use in concrete the enforcement do not limit, can use volume by volume concentration is 98% industry sulfuric acid commonly used, volume by volume concentration is 37% industry hydrochloric acid commonly used.
More than concrete enforcement be the detailed description that the present invention is done.These embodiments are not in order to limit invention, and for those skilled in the art, the improvement of being done and additional should be considered as within protection scope of the present invention without departing from the spirit of the invention.
Claims (7)
1. zinc alloy Acidwash solution, it is characterized in that: the solvent of described zinc alloy Acidwash solution is a water, contains: sulfuric acid 200～300ml/L, hydrochloric acid 10～30ml/L, vulkacit H 5～10g/L.
2. a kind of zinc alloy Acidwash solution according to claim 1 is characterized in that: described vitriolic volume by volume concentration is 98%, and described hydrochloric acid volume by volume concentration is 37%.
3. a kind of zinc alloy cleanup acid treatment technology according to claim 1 and 2 is characterized in that: contain sulfuric acid 250ml/L, hydrochloric acid 20ml/L, vulkacit H 7.5g/L.
4. zinc alloy cleanup acid treatment technology is characterized in that: may further comprise the steps:
Step 1: pre-treatment, zinc alloy workpiece is carried out oil removing, cleaning;
Step 2: pickling, the zinc alloy workpiece after step 1 processing be impregnated in the zinc alloy Acidwash solution, the solvent of described zinc alloy Acidwash solution is a water, and contains: sulfuric acid 200～300ml/L, hydrochloric acid 10～30ml/L, vulkacit H 5～10g/L;
Step 3: aftertreatment, the workpiece after step 2 handled cleans, plating or application are handled.
5. a kind of zinc alloy cleanup acid treatment technology according to claim 4, it is characterized in that: the pickling temperature in the described step 2 is 10～40 ℃.
6. a kind of zinc alloy cleanup acid treatment technology according to claim 4, it is characterized in that: the pickling time in the described step 2 is 5～120 seconds.
7. a kind of zinc alloy cleanup acid treatment technology according to claim 4, it is characterized in that: the pickling temperature in the described step 2 is 25 ℃, the pickling time is 60 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010143500 CN101831661A (en) | 2010-04-01 | 2010-04-01 | Zinc alloy acid-washing solution and zinc alloy acid-washing treating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010143500 CN101831661A (en) | 2010-04-01 | 2010-04-01 | Zinc alloy acid-washing solution and zinc alloy acid-washing treating process |
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| CN101831661A true CN101831661A (en) | 2010-09-15 |
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| CN 201010143500 Pending CN101831661A (en) | 2010-04-01 | 2010-04-01 | Zinc alloy acid-washing solution and zinc alloy acid-washing treating process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205305A (en) * | 2011-06-03 | 2011-10-05 | 哈尔滨飞机工业集团有限责任公司 | Surface processing method for aluminum alloy section before painting |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2038371A (en) * | 1977-12-23 | 1980-07-23 | Rheinisches Zinkwalzwerk Gmbh | Process for Surface-finishing Shaped Elements Consisting of Zinc or Zinc Alloys |
| JPS6428389A (en) * | 1987-07-24 | 1989-01-30 | Kawasaki Steel Co | Production of zn or zn alloy electroplated steel sheet having superior chemical treatability |
| CN1536060A (en) * | 2003-04-07 | 2004-10-13 | 章志伟 | Multifunctonal degreasing rust-removing cleaning agent and its preparaton method |
| CN101423924A (en) * | 2008-05-21 | 2009-05-06 | 解奕炯 | Degreasing, oil removing and sulfuric acid refining one-step method hot-dip galvanizing pre-treatment process |
-
2010
- 2010-04-01 CN CN 201010143500 patent/CN101831661A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2038371A (en) * | 1977-12-23 | 1980-07-23 | Rheinisches Zinkwalzwerk Gmbh | Process for Surface-finishing Shaped Elements Consisting of Zinc or Zinc Alloys |
| JPS6428389A (en) * | 1987-07-24 | 1989-01-30 | Kawasaki Steel Co | Production of zn or zn alloy electroplated steel sheet having superior chemical treatability |
| CN1536060A (en) * | 2003-04-07 | 2004-10-13 | 章志伟 | Multifunctonal degreasing rust-removing cleaning agent and its preparaton method |
| CN101423924A (en) * | 2008-05-21 | 2009-05-06 | 解奕炯 | Degreasing, oil removing and sulfuric acid refining one-step method hot-dip galvanizing pre-treatment process |
Non-Patent Citations (1)
| Title |
|---|
| 《表面处理用化学品配方》 20081231 黄玉媛等 表面处理用化学品配方 , 1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205305A (en) * | 2011-06-03 | 2011-10-05 | 哈尔滨飞机工业集团有限责任公司 | Surface processing method for aluminum alloy section before painting |
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Application publication date: 20100915 |