CN104668677A - Non-water-based electrolyte used for titanium alloy electrolytic machining and preparation method of non-water-based electrolyte - Google Patents
Non-water-based electrolyte used for titanium alloy electrolytic machining and preparation method of non-water-based electrolyte Download PDFInfo
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- CN104668677A CN104668677A CN201310636436.5A CN201310636436A CN104668677A CN 104668677 A CN104668677 A CN 104668677A CN 201310636436 A CN201310636436 A CN 201310636436A CN 104668677 A CN104668677 A CN 104668677A
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- based electrolyte
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- sulfamic acid
- sodium bromide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
- B23H3/08—Working media
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- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention discloses a non-water-based electrolyte used for titanium alloy electrolytic machining and a preparation method of the non-water-based electrolyte. The non-water-based electrolyte is composed of, by mass, 3 parts to 15 parts of sulfamic acid, 2 parts to 8 parts of sodium bromide and 77 parts to 95 parts of formamide. Sulfamic acid in the powder state and sodium bromide are weighed according to the component composition and evenly mixed, formamide is then added, and the mixture is stirred till the mixture is completely dissolved. Compared with the prior art, the raw materials are low in cost, the preparation process is simple, the machining effect is good, and the non-water-based electrolyte can be used for electrolytic machining of aerospace material alloy.
Description
Technical field
The present invention relates to Electrolyzed Processing electrolyte, more specifically, the present invention relates to a kind of electrolyte of aeronautical material titanium alloy.
Background technology
Electrolyzed Processing, also known as electrical-chemistry method (Electrochemical Machining-ECM), is anodic solution principle based on electrolytic process and by negative electrode shaping in advance by the process of workpiece according to certain shape and size machine-shaping.In process, interpolar passes to low-voltage, the direct current of high current density or pulse current, passes to swiftly flowing electrolyte simultaneously.Cathode tool with certain speed feeding, with the constant small―gap suture between maintenance electrode.Anode workpiece is then followed Faraday's law and is constantly dissolved according to the shape of tool cathode, until the shape and size of workpiece all reach requirement.
Titanium alloy is a kind of hard-cutting material, its machinability is between the high temperature resistant nickel base alloy and the aluminium alloy of easily processing of difficulty cutting, along with the employing that it is more and more many in aeronautical product, its processing problems more and more becomes key problem in technology, and one of important channel solving this difficult problem is exactly adopt Electrolyzed Processing.Compare with general alloy Electrolyzed Processing, Electrochemical Machining for Titanium Alloys has again its particularity, because titanium is from the very strong metal of passivity, when Electrolyzed Processing, surface easily forms passivating film and decomposition voltage is increased, and processing becomes difficulty; In process, particularly under low current density, easily form spot corrosion and affect surface roughness.After deliberation, the generation of point corrosion and the composition of titanium alloy electrolyte, proportioning, concentration have relation closely, therefore the necessary electrolyte to titanic alloy machining is studied further.
In order to solve the pitting problem in Electrochemical Machining for Titanium Alloys, in electrolyte, did many research work.Because titanium alloy has the feature of self-passivation. the passivating film that surface is formed has strong protectiveness, and therefore generally general electrolyte just differs and establishes a capital the Electrolyzed Processing of applicable titanium alloy.General NaNO
3or the electrolyte such as NaCl is all not quite suitable to titanium alloy.NaBr+NaCl or NaNO
3the composite electrolytes such as ten NaCl can obtain good effect.The electrolyte of low concentration can obtain good surface quality (lower roughness and less spuious spot corrosion), but is difficult to the generation definitely avoiding spot corrosion.The finished surface of light can be obtained with nonaqueous electrolytic solution Electrolyzed Processing titanium alloy and solve spot corrosion and dispersion corrosion problem.So launch the research to titanium alloy non-water based electrolyte.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, solve the suitable electrolyte of problem prior art lacks to(for) the Electrolyzed Processing of aerospace material titanium alloy, provide a kind of and be suitable for electrolyte of aerospace material titanium alloy and preparation method thereof.
Technical purpose of the present invention is achieved by following technical proposals:
For the non-water based electrolyte of Electrochemical Machining for Titanium Alloys, be made up of following component: sulfamic acid 3-15 mass parts, sodium bromide 2-8 mass parts and formamide 77-95 mass parts, wherein sulfamic acid and sodium bromide are pulverulence, order number is 100-500 orders, preferably 200-400 orders.
Preferred sulfamic acid 5-10 mass parts, sodium bromide 5-8 mass parts and formamide 80-90 mass parts, be more preferably 82-88 mass parts.
The preparation method of above-mentioned electrolyte: take pulverulence sulfamic acid and sodium bromide mixes according to component composition, then adds formamide and is stirred to and dissolves completely
Compared with prior art, the invention provides a kind of electrolyte being suitable for aerospace material Electrochemical Machining for Titanium Alloys, the cost of raw material of the present invention is cheaper, and preparation process is simple, processing effect is good, can be used for the Electrolyzed Processing of aerospace material titanium alloy.
Accompanying drawing explanation
Fig. 1 is the design sketch utilizing conventional water based electrolyte to carry out Electrolyzed Processing to obtain.
Fig. 2 is the design sketch utilizing water based electrolyte of the present invention to carry out Electrolyzed Processing to obtain.
Detailed description of the invention
Below by specific embodiment, the invention will be further described.Use sodium bromide, the sulfamic acid powder of Tianjin sky over the river chemical company, order number is 200 orders; Formamide: Tianjin sky over the river chemical company, primes, colourless transparent liquid, formamide content, % >=99.5.
| Formamide (g) | Sodium bromide (g) | Sulfamic acid (g) | |
| Embodiment 1 | 82 | 8 | 10 |
| Embodiment 2 | 88 | 5 | 7 |
| Embodiment 3 | 93 | 2 | 5 |
| Embodiment 4 | 95 | 2 | 3 |
| Embodiment 5 | 80 | 5 | 15 |
| Embodiment 6 | 77 | 8 | 15 |
| Embodiment 7 | 90 | 5 | 5 |
Take pulverulence sulfamic acid according to above-mentioned component composition and sodium bromide mixes, then add formamide and be stirred to and dissolve completely.
The TC4 material of research is for the manufacture of certain large aircraft wing section, and test material is bought in blue sky, east titanium Science and Technology Ltd..The electrolysis turning machine of test apparatus to be model be PHECMC6132-750; Manufacturer is Dongguan City Hui Die automation Science and Technology Ltd., select Electrolyzed Processing parameter: electrolyte temperature 30 DEG C, decomposition voltage 20V, machining gap 0.4mm, hydraulic pressure 1.0Mpa, process time, 5min, adopted the electrolyte of conventional water based electrolyte and the embodiment of the present invention to carry out Electrolyzed Processing, as shown in figure 1 and 2 respectively.
At conventional water based electrolyte: 15%NaCl+2%KBr, temperature 30 DEG C, decomposition voltage 20V, machining gap 0.4mm, hydraulic pressure 1.0Mpa, process time machines away 2mm under 5min condition, and surface pitting is serious;
Adopt the electrolyte that embodiment is joined respectively, temperature 30 DEG C, decomposition voltage 20V, machining gap 0.4mm, hydraulic pressure 1.0Mpa, process time machines away 2mm under 5min condition, does not have surface pitting
Above to invention has been exemplary description; should be noted that; when not departing from core of the present invention, any simple distortion, amendment or other those skilled in the art can not spend the equivalent replacement of creative work all to fall into protection scope of the present invention.
Claims (9)
1. for the non-water based electrolyte of Electrochemical Machining for Titanium Alloys, it is characterized in that, be made up of following component: sulfamic acid 3-15 mass parts, sodium bromide 2-8 mass parts and formamide 77-95 mass parts.
2. the non-water based electrolyte for Electrochemical Machining for Titanium Alloys according to claim 1, is characterized in that, sulfamic acid 5-10 mass parts, sodium bromide 5-8 mass parts and formamide 80-90 mass parts.
3. the non-water based electrolyte for Electrochemical Machining for Titanium Alloys according to claim 1, is characterized in that, sulfamic acid 5-10 mass parts, sodium bromide 5-8 mass parts and formamide 82-88 mass parts.
4. according to the non-water based electrolyte for Electrochemical Machining for Titanium Alloys one of claim 1-3 Suo Shu, it is characterized in that, sulfamic acid and sodium bromide are pulverulence, and order number is 100-500 orders.
5. according to the non-water based electrolyte for Electrochemical Machining for Titanium Alloys one of claim 4 Suo Shu, it is characterized in that, order number is 200-400 orders.
6. for the preparation method of the non-water based electrolyte of Electrochemical Machining for Titanium Alloys, it is characterized in that, sulfamic acid is taken and sodium bromide mixes according to component composition, then add formamide to be stirred to and to dissolve completely, sulfamic acid 3-15 mass parts, sodium bromide 2-8 mass parts and formamide 77-95 mass parts.
7. the preparation method of the non-water based electrolyte for Electrochemical Machining for Titanium Alloys according to claim 6, is characterized in that, sulfamic acid 5-10 mass parts, sodium bromide 5-8 mass parts and formamide 80-90 mass parts.
8. the preparation method of the non-water based electrolyte for Electrochemical Machining for Titanium Alloys according to claim 6, is characterized in that, sulfamic acid and sodium bromide are pulverulence, and order number is 100-500 orders.
9. the application of non-water based electrolyte in Electrolyzed Processing titanium alloy as claimed in claim 1.
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| CN201310636436.5A CN104668677A (en) | 2013-12-02 | 2013-12-02 | Non-water-based electrolyte used for titanium alloy electrolytic machining and preparation method of non-water-based electrolyte |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103990874A (en) * | 2014-04-18 | 2014-08-20 | 张家港华宝机械制造有限公司 | Non-water-based electrolyte for titanium alloy electrolytic machining and preparation method thereof |
| CN109482989A (en) * | 2017-09-12 | 2019-03-19 | 天津大学 | A kind of electrolyte and preparation method thereof and the application in double strand chain wheel shaft Electrolyzed Processing precision correction of the flank shape |
| CN109865906A (en) * | 2017-12-05 | 2019-06-11 | 天津大学 | A kind of electrolyte and preparation method thereof for wind power bearing piece surface hardened layer electrolysis repairing type |
| CN111014854A (en) * | 2019-11-15 | 2020-04-17 | 鞍钢集团矿业有限公司 | Electrolyte for titanium alloy micro-electrochemical machining and preparation method thereof |
Citations (5)
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| CN1161894A (en) * | 1996-01-17 | 1997-10-15 | 新技术事业团 | Sunface treatment method using discharging in liquid |
| US20040159558A1 (en) * | 2003-02-18 | 2004-08-19 | Bunyan Michael H. | Polishing article for electro-chemical mechanical polishing |
| CN1714974A (en) * | 2004-06-14 | 2006-01-04 | 联合工艺公司 | Apparatus and method for white layer and recast removal |
| EP1970473A2 (en) * | 2007-03-09 | 2008-09-17 | Poligrat Gmbh | Electropolishing method for titanium |
| CN102312277A (en) * | 2011-10-25 | 2012-01-11 | 厦门大学 | Electrochemical polishing electrolyte adopted for titanium and titanium alloy, use method thereof |
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2013
- 2013-12-02 CN CN201310636436.5A patent/CN104668677A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1161894A (en) * | 1996-01-17 | 1997-10-15 | 新技术事业团 | Sunface treatment method using discharging in liquid |
| US20040159558A1 (en) * | 2003-02-18 | 2004-08-19 | Bunyan Michael H. | Polishing article for electro-chemical mechanical polishing |
| CN1714974A (en) * | 2004-06-14 | 2006-01-04 | 联合工艺公司 | Apparatus and method for white layer and recast removal |
| EP1970473A2 (en) * | 2007-03-09 | 2008-09-17 | Poligrat Gmbh | Electropolishing method for titanium |
| CN102312277A (en) * | 2011-10-25 | 2012-01-11 | 厦门大学 | Electrochemical polishing electrolyte adopted for titanium and titanium alloy, use method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103990874A (en) * | 2014-04-18 | 2014-08-20 | 张家港华宝机械制造有限公司 | Non-water-based electrolyte for titanium alloy electrolytic machining and preparation method thereof |
| CN109482989A (en) * | 2017-09-12 | 2019-03-19 | 天津大学 | A kind of electrolyte and preparation method thereof and the application in double strand chain wheel shaft Electrolyzed Processing precision correction of the flank shape |
| CN109865906A (en) * | 2017-12-05 | 2019-06-11 | 天津大学 | A kind of electrolyte and preparation method thereof for wind power bearing piece surface hardened layer electrolysis repairing type |
| CN111014854A (en) * | 2019-11-15 | 2020-04-17 | 鞍钢集团矿业有限公司 | Electrolyte for titanium alloy micro-electrochemical machining and preparation method thereof |
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