CN102888613A - Pickling solution for removing oxide skins of surfaces of nickel and nickel alloy and pickling method - Google Patents
Pickling solution for removing oxide skins of surfaces of nickel and nickel alloy and pickling method Download PDFInfo
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- CN102888613A CN102888613A CN2012104337566A CN201210433756A CN102888613A CN 102888613 A CN102888613 A CN 102888613A CN 2012104337566 A CN2012104337566 A CN 2012104337566A CN 201210433756 A CN201210433756 A CN 201210433756A CN 102888613 A CN102888613 A CN 102888613A
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Abstract
The invention discloses a pickling solution for removing oxide skins of surface of nickel and nickel alloy. The pickling solution is prepared by uniformly mixing the following raw materials in percentage by volume: 13%-%45 of HF, 11%-13% of HNO3 and the balance of water. In addition, the invention also provides a pickling method for removing the oxide skins of the surfaces of nickel and nickel alloy by adopting the pickling solution. According to the invention, the formula of the pickling solution is simple, the cost is low, the efficiency is high, the oxide skin of the surface of nickel or nickel alloy can be directly removed by soaking without machining the surface of nickel or nickel alloy in advance, so that damage to the surface of nickel or nickel alloy surface can be avoided. The pickling method is simple, nickel and nickel alloy machining materials with good surface brightness can be obtained by controlling the parameters of the pickling process, such as pickling solution ratio, pickling temperature and pickling time, the problems of poor surface brightness and dimensional accuracy caused by the pretreatment of a mechanical method can be effectively solved, and metal loss caused during the machining process can be reduced.
Description
Technical field
The invention belongs to metal material surface oxide skin and remove technical field, be specifically related to a kind of pickle solution and acid washing method of removing nickel and nickel alloy surfaces oxide skin.
Background technology
The tack of nickel and nickel alloy surfaces oxide compound is stronger than stainless steel, therefore, the oxide skin of material surface is difficult for removing after hot-work or the thermal treatment, generally adopt the processing mode scale removal of fine sand band, polishing wheel, steel brush or sandblast both at home and abroad, then carry out pickling in the mixing solutions of hydrofluoric acid and nitric acid, it is open that concrete pickle solution proportioning has no.This mechanical processing method by polishing or shot-peening scale removal can make surface quality and the dimensional precision of nickelalloy processing material guarantee usually.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned the deficiencies in the prior art, and a kind of pickle solution of removing nickel and nickel alloy surfaces oxide skin is provided.This pickle solution can directly be removed nickel or nickel alloy surfaces oxide skin totally, does not need first nickel or nickel alloy surfaces to be carried out mechanical treatment, has avoided the damage to nickel or nickel alloy surfaces.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of pickle solution of removing nickel and nickel alloy surfaces oxide skin, it is characterized in that, and mixed by the raw material of following volume percent and make: hydrofluoric acid 13%～45%, nitric acid 11%～30%, surplus are water; The mass percent concentration of described hydrofluoric acid is 55%; The mass percent concentration of described nitric acid is 65%～68%.
Above-mentioned a kind of pickle solution of removing nickel and nickel alloy surfaces oxide skin is mixed by the raw material of following volume percent and to make: hydrofluoric acid 20%～38%, and nitric acid 12%～20%, surplus is water.
Above-mentioned a kind of pickle solution of removing nickel and nickel alloy surfaces oxide skin is mixed by the raw material of following volume percent and to make: hydrofluoric acid 26.7%, and nitric acid 13.3%, surplus is water.
In addition, the present invention also provides a kind of acid washing method that adopts above-mentioned pickle solution to remove nickel and nickel alloy surfaces oxide skin, it is characterized in that, the method is: have the nickel of oxide skin or nickelalloy to immerse in the pickle solution on the surface, be to soak 5min～30min under 35 ℃～45 ℃ the condition in temperature, remove the oxide skin of nickel or nickel alloy surfaces after taking out with high pressure water washing, then will remove nickel or the nickel alloy surfaces oven dry of surface scale.
Above-mentioned method, the pressure of described high pressure water are 2MPa～5MPa, and flow is 20L/min～50L/min.
The present invention compared with prior art has the following advantages:
1, pickle solution prescription of the present invention is simple, and cost is low, and efficient is high, can nickel or nickel alloy surfaces oxide skin be removed totally by soaking directly, does not need first nickel or nickel alloy surfaces to be carried out mechanical treatment, has avoided the damage to nickel or nickel alloy surfaces.
2, the inventive method is simple, the parameters such as pickle solution proportioning, pickling temperature and pickling time by the control acid cleaning process, obtain the good nickel of surface brightness and nickelalloy processing material, can effectively solve because of mechanical process and anticipate the surface smoothness that produces and the problem of poor dimensional precision, the metal loss that causes in the time of also can reducing mechanical treatment.
3, pickle solution of the present invention and acid washing method are suitable for the pickling of pure nickel, nichrome, NI-CR-MO alloy.
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment
Embodiment 1
The pickle solution of present embodiment is that to be 67% nitric acid and water according to 26.7: 13.3: 60 volume ratio mix makes for 55% hydrofluoric acid, mass percent concentration by mass percent concentration.
The acid washing method of present embodiment is: the proportioning by pickle solution adds entry in pickling tank, add hydrofluoric acid and nitric acid again, mixes and obtains pickle solution; Pickle solution is heated to 35 ℃, then surface band is had the As rolled N4 pure nickel sheet material of oxide skin to immerse in the pickle solution, keeping the pickle solution temperature is 35 ℃, takes out sheet material behind the immersion 30min, and the oxide skin of plate surface becomes loose; Be 2MPa with the sheet material pressure that takes out again, flow is that the high pressure water washing of 20L/min is removed the loose scale that is attached to plate surface, then will remove the plate surface oven dry of surface scale.
The pickle solution of present embodiment and acid washing method can be removed the oxide skin of As rolled pure nickel plate surface fully, do not need first plate surface to be carried out mechanical treatment, have avoided the damage to plate surface, and the plate surface behind the scale removal is smooth, luminance brightness is fine.
Embodiment 2
The pickle solution of present embodiment is that to be 68% nitric acid and water according to 13: 30: 57 volume ratio mix makes for 55% hydrofluoric acid, mass percent concentration by mass percent concentration.
The acid washing method of present embodiment is: the proportioning by pickle solution adds entry in pickling tank, add hydrofluoric acid and nitric acid again, mixes and obtains pickle solution; Pickle solution is heated to 40 ℃, then surface band is had the UNS N10276 nickelalloy hot sheet after the solid solution of oxide skin to immerse in the pickle solution, keeping the pickle solution temperature is 40 ℃, takes out sheet material after soaking 30min, and the oxide skin of plate surface becomes loose; Be 4MPa with the sheet material pressure that takes out again, flow is that the high pressure water washing of 40L/min is removed the loose scale that is attached to plate surface, then will remove the plate surface oven dry of surface scale.
The pickle solution of present embodiment and acid washing method can be removed the oxide skin of the finished product hot rolling nickelalloy plate surface after the solution treatment fully, do not need first plate surface to be carried out mechanical treatment, avoided the damage to plate surface, the plate surface behind the scale removal is smooth, luminance brightness is fine.
Embodiment 3
The pickle solution of present embodiment is that to be 65% nitric acid and water according to 45: 11: 44 volume ratio mix makes for 55% hydrofluoric acid, mass percent concentration by mass percent concentration.
The acid washing method of present embodiment is: the proportioning by pickle solution adds entry in pickling tank, add hydrofluoric acid and nitric acid again, mixes and obtains pickle solution; Pickle solution is heated to 45 ℃, then surface band is had the As rolled UNS N02201 pure nickel sheet material of oxide skin to immerse in the pickle solution, keeping the pickle solution temperature is 45 ℃, takes out sheet material behind the immersion 5min, and the oxide skin of plate surface becomes loose; Be 5MPa with the sheet material pressure that takes out again, flow is that the high pressure water washing of 50L/min is removed the loose scale that is attached to plate surface, then will remove the plate surface oven dry of surface scale.
The pickle solution of present embodiment and acid washing method can be removed the oxide skin of As rolled pure nickel plate surface fully, do not need first plate surface to be carried out mechanical treatment, have avoided the damage to plate surface, and the plate surface behind the scale removal is smooth, luminance brightness is fine.
Embodiment 4
The pickle solution of present embodiment is that to be 65% nitric acid and water according to 20: 20: 60 volume ratio mix makes for 55% hydrofluoric acid, mass percent concentration by mass percent concentration.
The acid washing method of present embodiment is: the proportioning by pickle solution adds entry in pickling tank, add hydrofluoric acid and nitric acid again, mixes and obtains pickle solution; Pickle solution is heated to 40 ℃, then surface band there is the finished product hot rolling UNS N06600 nickelalloy sheet material after the solution treatment of oxide skin to immerse in the pickle solution, keeping the pickle solution temperature is 40 ℃, takes out sheet material behind the immersion 10min, and the oxide skin of plate surface becomes loose; Be 4MPa with the sheet material pressure that takes out again, flow is that the high pressure water washing of 40L/min is removed the loose scale that is attached to plate surface, then will remove the plate surface oven dry of surface scale.
The pickle solution of present embodiment and acid washing method can be removed the oxide skin of the finished product hot rolling nickelalloy plate surface after the solution treatment fully, do not need first plate surface to be carried out mechanical treatment, avoided the damage to plate surface, the plate surface behind the scale removal is smooth, luminance brightness is fine.
Embodiment 5
The pickle solution of present embodiment is that to be 68% nitric acid and water according to 38: 12: 50 volume ratio mix makes for 55% hydrofluoric acid, mass percent concentration by mass percent concentration.
The acid washing method of present embodiment is: the proportioning by pickle solution adds entry in pickling tank, add hydrofluoric acid and nitric acid again, mixes and obtains pickle solution; Pickle solution is heated to 40 ℃, then surface band there is the cold rolling UNS N08800 of the finished product nickelalloy tubing after the solution treatment of oxide skin to immerse in the pickle solution, keeping the pickle solution temperature is 40 ℃, takes out tubing behind the immersion 20min, and the oxide skin of tube surfaces becomes loose; Be 3MPa with the tubing pressure that takes out again, flow is that the high pressure water washing of 30L/min is removed the loose scale that is attached to tube surfaces, and the tube surfaces that then will remove surface scale dries up.
The pickle solution of present embodiment and acid washing method can be removed the oxide skin on the finished product Cold-Rolled Nickel alloy pipe surface after the solution treatment fully, do not need first the tubing surfaces externally and internally to be carried out mechanical treatment, avoided the damage to the tubing surfaces externally and internally, the tubing surfaces externally and internally behind the scale removal is smooth, luminance brightness is fine.
The above; it only is preferred embodiment of the present invention; be not that the present invention is done any restriction, every any simple modification, change and equivalent structure of above embodiment being done according to the invention technical spirit changes, and all still belongs in the protection domain of technical solution of the present invention.
Claims (5)
1. a pickle solution of removing nickel and nickel alloy surfaces oxide skin is characterized in that, is mixed by the raw material of following volume percent and makes: hydrofluoric acid 13%～45%, and nitric acid 11%～30%, surplus is water; The mass percent concentration of described hydrofluoric acid is 55%; The mass percent concentration of described nitric acid is 65%～68%.
2. a kind of pickle solution of removing nickel and nickel alloy surfaces oxide skin according to claim 1 is characterized in that, is mixed by the raw material of following volume percent and makes: hydrofluoric acid 20%～38%, and nitric acid 12%～20%, surplus is water.
3. a kind of pickle solution of removing nickel and nickel alloy surfaces oxide skin according to claim 2 is characterized in that, is mixed by the raw material of following volume percent and makes: hydrofluoric acid 26.7%, and nitric acid 13.3%, surplus is water.
4. an employing such as claim 1,2 or 3 described pickle solutions are removed the acid washing method of nickel and nickel alloy surfaces oxide skin, it is characterized in that, the method is: have the nickel of oxide skin or nickelalloy to immerse in the pickle solution on the surface, be to soak 5min～30min under 35 ℃～45 ℃ the condition in temperature, remove the oxide skin of nickel or nickel alloy surfaces after taking out with high pressure water washing, then will remove nickel or the nickel alloy surfaces oven dry of surface scale.
5. method according to claim 4 is characterized in that, the pressure of described high pressure water is 2MPa～5MPa, and flow is 20L/min～50L/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104337566A CN102888613A (en) | 2012-11-02 | 2012-11-02 | Pickling solution for removing oxide skins of surfaces of nickel and nickel alloy and pickling method |
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| CN2012104337566A CN102888613A (en) | 2012-11-02 | 2012-11-02 | Pickling solution for removing oxide skins of surfaces of nickel and nickel alloy and pickling method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105780020A (en) * | 2014-12-23 | 2016-07-20 | 宁波创润新材料有限公司 | Pipeline cleaning method |
| CN107843478A (en) * | 2017-11-08 | 2018-03-27 | 宁波江丰电子材料股份有限公司 | Preparation method and ultra-pure aluminum sample impurity analysis method for the ultra-pure aluminum sample of GDMS detections |
| CN111139488A (en) * | 2020-03-03 | 2020-05-12 | 广东富行洗涤剂科技有限公司 | Chemical demolding liquid for high-temperature alloy and demolding treatment method thereof |
| CN113293387A (en) * | 2021-05-28 | 2021-08-24 | 金川集团股份有限公司 | Drawing and pickling process for removing oxide skin of nickel/nickel alloy wire |
| CN113334256A (en) * | 2021-06-11 | 2021-09-03 | 贵州永红航空机械有限责任公司 | Method for cleaning nickel-based high-temperature alloy before welding |
| CN114686896A (en) * | 2022-03-16 | 2022-07-01 | 山西太钢不锈钢股份有限公司 | Method for removing zebra stripes on surface of 4J36 nickel-iron alloy plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105780020A (en) * | 2014-12-23 | 2016-07-20 | 宁波创润新材料有限公司 | Pipeline cleaning method |
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| CN111139488A (en) * | 2020-03-03 | 2020-05-12 | 广东富行洗涤剂科技有限公司 | Chemical demolding liquid for high-temperature alloy and demolding treatment method thereof |
| CN113293387A (en) * | 2021-05-28 | 2021-08-24 | 金川集团股份有限公司 | Drawing and pickling process for removing oxide skin of nickel/nickel alloy wire |
| CN113334256A (en) * | 2021-06-11 | 2021-09-03 | 贵州永红航空机械有限责任公司 | Method for cleaning nickel-based high-temperature alloy before welding |
| CN114686896A (en) * | 2022-03-16 | 2022-07-01 | 山西太钢不锈钢股份有限公司 | Method for removing zebra stripes on surface of 4J36 nickel-iron alloy plate |
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