CN103160832B - Stripping solution for chemical nickel-plated coating of cast aluminum piece and stripping method - Google Patents
Stripping solution for chemical nickel-plated coating of cast aluminum piece and stripping method Download PDFInfo
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- CN103160832B CN103160832B CN201310123266.0A CN201310123266A CN103160832B CN 103160832 B CN103160832 B CN 103160832B CN 201310123266 A CN201310123266 A CN 201310123266A CN 103160832 B CN103160832 B CN 103160832B
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Abstract
The invention provides a stripping solution for the chemical nickel-plated coating of a cast aluminum piece. The stripping solution contains nitric acid, sodium 3-nitrobenzene sulfonate, nickel powder, pure water, hydrofluoric acid and sodium chloride. The stripping solution provided by the invention is capable of realizing secondary utilization of unaccepted materials generated in the chemical nickel-plating production process; therefore, the production process level is greatly improved; and the stripping solution is simple in operation, easy for control, low in cost and the like.
Description
Technical field
The present invention relates to aluminum process field, more particularly, relate to a kind of strip solution and strip method thereof of aluminum casting chemical nickel plating coating
Background technology
Aluminum process has the features such as physical strength is high, density is little, heat-conductivity conducting is good, good toughness, easily processing, thus at industrial circle, and the particularly field such as aerospace, national defense industry, so that in daily life, have and apply more widely.
Cast aluminium surface coverage has the oxide film of one deck densification, and cast aluminium and surrounding environment can be kept apart by it, avoid oxidized.But this layer of oxide film is vulnerable to the corrosion of strong acid and highly basic, cast aluminium also produces intergranular corrosion simultaneously, and its surface hardness is reduced, not wear-resisting.Thus, corrosion becomes affects one of greatest problem that aluminum casting is widely used.
In order to improve aluminum casting surface property, improve its erosion resistance, most simple effective method plates one deck nickel at cast aluminium workpiece surface exactly at present, namely makes a kind of nickel salt being in liquid state change metallic forms into and is attached to cast aluminium workpiece surface.
Along with chemical nickel plating is in China's promotion and application for many years, this technology becomes more and more ripe, and application is also more and more extensive, can say that chemical nickel plating has entered into quite ripe stage.Aluminum casting chemical nickel plating develops on the basis summarizing other basal body chemical plating nickel comes.Aluminum casting chemical nickel plating does not use extraneous electricity, by redoxomorphism itself at aluminum casting deposited on silicon one deck nickel, adopts the erosion resistance and wear resistance that can improve aluminum casting in this way, increases the gloss on surface and attractive in appearance.But in treating processes, there will be part unacceptable product, causing product cost to raise, for enabling unacceptable product again utilize, needing the substandard product surface to occurring in nickel process to carry out strip process, and then carry out chemical nickel plating, reach the object of second stage employ.And many, particularly all the more so for highly corrosion resistant chemical Ni-plating layer than electroless nickel layer strip difficulty of the strip of chemical Ni-plating layer, the unacceptable product occurred in aluminum casting chemical nickel plating production process in the past is only scrapped, and thus condemnation factor is also high.
Traditional aluminum casting chemical nickel plating coating strip method and the strip solution of use, the following defect of ubiquity: 1, have injury to base material, use traditional strip method, substrate surface there will be sand holes and corrosion phenomenon; 2, complex process, the operating time is long; 3, strip cost is high.
Summary of the invention
For the deficiency that the strip solution of above-mentioned traditional aluminum casting chemical nickel plating coating strip method and use occurs, the invention provides a kind of aluminum casting chemical nickel plating coating strip solution, to solve traditional chemical nickel plating coating strip solution to have damage defect to base material.
On the other hand, the present invention is based on above-mentioned strip solution and a kind of strip method is provided, long to solve prior art processes complexity, operating time, the problem that strip cost is high.
Based on first aspect of the present invention, provide a kind of aluminum casting chemical nickel plating coating strip solution, this strip solution comprises: nitric acid, m-nitrobenzene sodium sulfonate, nickel powder, pure water, hydrofluoric acid and sodium-chlor.
Further, with 1 liter of solution measures, described nitric acid content is 570-600ml/L, described fluohydric acid content is 80-100ml/L, all the other are pure water; Described nickel powder content is 2-3g/L, described sodium chloride content is 10-15g/L, described m-nitrobenzene sodium sulfonate content is 10-15g/L.
Based on another aspect of the present invention, also provide a kind of aluminum casting chemical nickel plating coating strip method, this strip method comprises:
A, strip process, put into the aluminum casting chemical nickel plating coating strip solution made, carry out strip process, to remove the coating of aluminum casting product surface by electroless plating nickel product;
B, washing process, put into pure water groove by the base material after strip and carry out cleaning one to three time;
C, drying and processing, dry the aluminum casting product after washing process at a certain temperature.
After coating on this strip solution and aluminum casting base material reacts, will no longer continue to react with base material, the effect of protection cast member base material can be reached like this.
Further, the described step a strip time is 30-60 second.
Further, in described step a strip treating processes, the temperature of strip solution controls at 60 DEG C to 80 DEG C.
Compared with prior art, the strip solution of a kind of aluminum casting chemical nickel plating coating of the present invention and strip method thereof, reach following effect:
1) a kind of aluminum casting chemical nickel plating coating strip solution of the present invention and strip method thereof, manufacturing process is simple, easily controls, strip successful.
2) a kind of aluminum casting chemical nickel plating coating strip solution of the present invention and strip method thereof, after carrying out strip process, can reach the second stage employ to unacceptable product, reduce manufacturing cost, improve production efficiency and state of the art.
Accompanying drawing explanation
Fig. 1 is strip processing flow chart of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, but not as a limitation of the invention.As shown in Figure 1, first in step sl strip process is carried out to strip solution.Specifically, first will include nitric acid, m-nitrobenzene sodium sulfonate, nickel powder, pure water, hydrofluoric acid, and the strip solution of sodium-chlor composition mixes, and is mixed with strip solution.Wherein, hydrofluoric acid and nitric acid are as oxygenant, and sodium-chlor and nickel powder are as inhibiter.The present invention there is no particular requirement to the concentration of above-mentioned raw materials and PH.Preferably, in the present embodiment, the nitric acid in strip solution is 600ml/L, pure water is 300ml/L, hydrofluoric acid is 100ml/L, sodium chloride content is 10g/L, and m-nitrobenzene sodium sulfonate content is 15g/L, and described nickel powder content is 2g/L.During strip process, first electroless plating nickel product is put into this strip solution made, and make the temperature of strip solution control, between 60 DEG C to 80 DEG C, to carry out strip process, keep certain hour, to remove the coating of aluminum casting product surface.
Then, in step s 2 the product after strip process is put into pure water groove and carry out cleaning one to three time, the spot removing product surface is remaining.
After electroless plating nickel product is washed, then carry out drying and processing in step s3, and then remove the moisture of product surface.This completes the strip process of this electroless plating nickel product.
Use the strip solution of the present embodiment can reach second stage employ to the unacceptable product occurred in chemical nickel plating production process, greatly improve production efficiency and state of the art, simple to operate, easy control, cost are low.
Adopt identical treatment process with above-described embodiment, just value in the ratio range of strip solution provided by the invention, also can reach identical technique effect.Such as, the nitric acid in strip solution is 570ml/L, pure water is 350ml/L, hydrofluoric acid is 80ml/L, sodium chloride content is 12g/L, and m-nitrobenzene sodium sulfonate content is 12g/L, and described nickel powder content is 3g/L.Also can select the strip solution of such mixing match: nitric acid is 580ml/L, pure water is 330ml/L, hydrofluoric acid is 90ml/L, sodium chloride content is 15g/L, m-nitrobenzene sodium sulfonate content is 10g/L, and described nickel powder content is 2g/L.
Above-mentioned explanation illustrate and describes some preferred embodiments of the present invention, but as previously mentioned, be to be understood that the present invention is not limited to the form disclosed by this paper, should not regard the eliminating to other embodiments as, and can be used for other combinations various, amendment and environment, and can in invention contemplated scope described herein, changed by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change do not depart from the spirit and scope of the present invention, then all should in the protection domain of claims of the present invention.
Claims (6)
1. an aluminum casting chemical nickel plating coating strip solution, is characterized in that, comprises nitric acid, m-nitrobenzene sodium sulfonate, nickel powder, pure water, hydrofluoric acid and sodium-chlor; Wherein, described nitric acid content is 570-600ml/L, described fluohydric acid content is 80-100ml/L, all the other are pure water; Described nickel powder content is 2-3g/L, described sodium chloride content is 10-15g/L, described m-nitrobenzene sodium sulfonate content is 10-15g/L.
2. the strip method of an aluminum casting chemical nickel plating coating, it is characterized in that, strip process in this strip method comprises: electroless plating nickel product is put into the aluminum casting chemical nickel plating coating strip solution as claimed in claim 1 made, to remove the coating of aluminum casting product surface.
3. strip method as claimed in claim 2, it is characterized in that, the time of described strip process is 30-60 second.
4. strip method as claimed in claim 2 or claim 3, it is characterized in that, the temperature of the strip solution of described strip process controls at 60 DEG C to 80 DEG C.
5. strip method as claimed in claim 2 or claim 3, is characterized in that, the method also comprises washing process and drying and processing.
6. strip method as claimed in claim 5, is characterized in that, described washing process be by strip after product put into pure water groove and carry out cleaning one to three time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310123266.0A CN103160832B (en) | 2013-04-10 | 2013-04-10 | Stripping solution for chemical nickel-plated coating of cast aluminum piece and stripping method |
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| CN201310123266.0A CN103160832B (en) | 2013-04-10 | 2013-04-10 | Stripping solution for chemical nickel-plated coating of cast aluminum piece and stripping method |
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| CN103160832A CN103160832A (en) | 2013-06-19 |
| CN103160832B true CN103160832B (en) | 2015-06-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104131284B (en) * | 2014-07-24 | 2016-07-13 | 浙江凯文磁业有限公司 | A kind of sweep-out method of neodymium-iron-boron permanent magnetic material surface electronickelling |
| CN105220215B (en) * | 2015-11-04 | 2017-06-16 | 哈尔滨工业大学 | A kind of obstacles in quit of ultraprecise Al and Al-alloy electroless nickel-phosphorus alloy plating layer on surface |
| CN106148963A (en) * | 2016-06-24 | 2016-11-23 | 惠州市博美环保新材料有限公司 | A kind of environmental-protecting chemical stripping nickel agent and strip method thereof |
| CN108085684B (en) * | 2017-11-23 | 2019-10-08 | 中国科学院近代物理研究所 | For going the chemical decoating liquid and strip method of copper removal surface niobium coating |
| CN108517522B (en) * | 2018-03-22 | 2019-10-25 | 龙南骏亚精密电路有限公司 | A kind of PCB/Sn/NiCu structural circuit plate nickel-copper alloy layer chemistry strip composition and its strip method |
| CN108359989B (en) * | 2018-03-22 | 2019-12-06 | 深圳市天熙科技开发有限公司 | Nickel-copper alloy layer chemical stripping composition for circuit board and stripping method thereof |
| CN111029032B (en) * | 2019-11-18 | 2021-07-06 | 西部超导材料科技股份有限公司 | Method for improving surface quality of NbTi superconducting wire |
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| TW508374B (en) * | 1999-08-27 | 2002-11-01 | Mec Kk | Etching solution for nickel or nickel alloy, and etching method |
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| TW508374B (en) * | 1999-08-27 | 2002-11-01 | Mec Kk | Etching solution for nickel or nickel alloy, and etching method |
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