CN103498166A - Liquid phase plasma surface cleaning method for tungsten-rhenium wire - Google Patents
Liquid phase plasma surface cleaning method for tungsten-rhenium wire Download PDFInfo
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- CN103498166A CN103498166A CN201310436803.7A CN201310436803A CN103498166A CN 103498166 A CN103498166 A CN 103498166A CN 201310436803 A CN201310436803 A CN 201310436803A CN 103498166 A CN103498166 A CN 103498166A
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Abstract
The invention discloses a liquid phase plasma surface cleaning method for a tungsten-rhenium wire. Equipment comprises a control power supply, an output power supply, a cleaning tank, a first electrode and a second electrode. According to the liquid phase plasma surface cleaning method, the tungsten-rhenium wire is taken as the first electrode, the tungsten-rhenium wire is matched with the second electrode and a neutral salt cleaning solution, plasma can be produced on the surface of the tungsten-rhenium wire after electrification, ultrasonic oscillation is taken as assistance for removing greasy dirt and impurities on the surfaces of parts, and the liquid phase plasma surface cleaning method has the characteristics of thorough and complete cleaning and bright and tidy smooth; the cleaning solution selects a sodium bicarbonate solution which does not contain acid and alkali, the treatment of the waste solution is not required, and the harm to an environment can also be avoided; and the tungsten-rhenium wire is rolled up for batch cleaning, the cleaning quantity is large, and the cleaning efficiency is high.
Description
Technical field
The invention belongs to metal cleaning technique field, specifically, the particularly liquid phase plasma method for cleaning surface of tungsten-rhenium wire.
Background technology
Once tungsten filament just becomes very crisp as electric light source commonly used after applied at elevated temperature generation recrystallize, in the situation that be hit or shake very easily fracture.In the electric light source products of ask for something high reliability, for preventing the fracture of filament, in the doped tungsten wire of being everlasting, add rhenium, be called tungsten-rhenium wire, rhenium-containing 1%～5% (quality) in alloy, mix silicon, aluminium, potassium in addition to improve the high-temperature behavior of material.It can make the brittle-ductile transition temperature of tungsten drop to room temperature or below room temperature.Tungsten-rhenium wire application at present is main more in the application of the following aspects:
(1) tengsten lamp of production particular requirement, the chromatogram heat-sensitive element;
(2) be used for televisor heating and picture tube and pick up tube for the manufacture of the heating silk screen;
(3) for Military Electronic Equipment.
(4) tungsten-rhenium wire also has 25%Re and two W-Re alloyss of often using of 26%Re, mainly as thermocouple material.
The production technique of tungsten-rhenium wire is: raw material preparation-raw material separation-batch mixing-reduction processes-and batch mixing-die mould sintering-swage-drawing processing-finished product for the second time.In the process of drawing processing, use the lubricants such as graphite due to needs, there is one deck graphite on the surface of tungsten-rhenium wire, is black, affects its outward appearance and over-all properties.Therefore, tungsten-rhenium wire needed to carry out surface cleaning before forming finished product.From current domestic cleaning technique, be mainly to use pickling or alkali cleaning, add the ultrasonic wave composite cleaning, this cleaning technique can not obtain surface cleaning enough lights and clean, and waste liquid also can bring the problems such as environmental pollution.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of and cleans up and tungsten-rhenium wire liquid phase plasma method for cleaning surface completely.
Technical scheme of the present invention is as follows: a kind of liquid phase plasma method for cleaning surface of tungsten-rhenium wire, and the method comprises the following steps:
A, the tungsten-rhenium wire of rolling directly is immersed in the neutral salt scavenging solution of rinse bath fully as the first electrode, nonmetal conducting plates or inert metal conducting plates are immersed in the neutral salt scavenging solution of rinse bath as the second electrode;
B, be the negative or positive electrode of the first electrode access power supply, be another utmost point of the second electrode access power supply, and synchronously outside rinse bath, open ultrasonic generator to carrying out ultrasonic oscillation in rinse bath, continue 5-30min;
C, disconnect the access power supply of the first electrode, the second electrode simultaneously and close ultrasonic generator, the rolling tungsten-rhenium wire of the first electrode is taken out;
D, the rolling tungsten-rhenium wire of taking-up is rinsed with clear water, then drying treatment, the tungsten-rhenium wire finished product obtained.
Tungsten-rhenium wire rolling in step a of the present invention, can realize the rolling mass disposal of tungsten-rhenium wire, and the flushing dose of every batch of tungsten-rhenium wire is large, and cleaning efficiency is high.Simultaneously, using tungsten-rhenium wire as the first electrode, using nonmetal conducting plates or inert metal conducting plates as the second electrode, both all immerse in scavenging solution, can form a circuit after energising, and the scavenging solution intermediate ion produces and moves about, and assemble near electrode, for isoionic generation provides condition.Scavenging solution is selected neutral salt solution, and it, containing soda acid, need not carry out the waste liquid processing, can not work the mischief to environment yet.
In step b of the present invention, be that the first electrode and the second electrode connect electricity, telegraph circuit connects into a current path together with scavenging solution, under the effect of electric current, the neutral salt solution negative ions produces and moves freely, and at first around tungsten-rhenium wire, forms bubble, and then negative ions is in the situation that reach enough current densities, excite bubble, and the generation plasma, the impurity such as aquadag on tungsten-rhenium wire surface are carried out to mechanical shock effect and thermal coupling effect, reach the purpose of surface cleaning and leveling.
In step b the first electrode and the second electrode connect electric in, also outside rinse bath the synchronous ultrasonic generator of opening to carrying out ultrasonic oscillation in rinse bath.On the one hand, when impurity such as tungsten-rhenium wire surface aquadags, under the isoionic effect of liquid, become loose, and while coming off gradually, ultrasonic oscillation can be accelerated tungsten-rhenium wire surface impurity falling speed greatly, improves processing efficiency; On the other hand, the liquid plasma effect is because temperature can reach 1000 ℃, shock action is strong, can make rapidly surperficial dirt loosen and come off, but because the sticking power of tungsten-rhenium wire surface dirt is inhomogeneous, cause surperficial dirt not clean up simultaneously, will cause like this some local can being burnt or impact injury by plasma, bring disadvantageous effect to surface, and be aided with hyperacoustic compound action, can make tungsten-rhenium wire surface dirt come off uniformly rapidly, reduce action time, can not cause surface damage because of the isoionic timeout treatment of liquid.
Be 5-30min the action time of the first electrode in step b of the present invention and the conduction time of the second electrode and ultrasonic oscillation, if action time is oversize, the surface temperature that easily makes tungsten-rhenium wire is too high and cause that the tungsten-rhenium wire surface produces even fracture of damage, if action time is too short, can the liquid plasma cleaning abundant not, the cleaning of tungsten-rhenium wire is not comprehensive, so action time is comparatively applicable at 5-30min, can dispose the impurity such as aquadag on tungsten-rhenium wire surface, also can not cause damage to tungsten-rhenium wire itself.
Disconnect access power supply on electrode in step c of the present invention simultaneously and close ultrasonic generator, and the impurity such as aquadag have been cleaned on its surface while taking out tungsten-rhenium wire.
In steps d of the present invention, the rolling tungsten-rhenium wire of taking-up is rinsed with clear water, can be rinsed out the plasma on tungsten-rhenium wire surface, then drying treatment, the tungsten-rhenium wire finished product can be obtained.
Neutral salt scavenging solution described in step a is the sodium hydrogen carbonate solution that concentration is 3%-15%.Sodium hydrogen carbonate solution possesses the characteristics of ion, and it easily obtains simultaneously, and partial neutral, containing soda acid, need not carry out the waste liquid processing, can not work the mischief to environment yet.The concentration of sodium hydrogen carbonate solution is too high; the plasma body produced so is too much; the excess Temperature of first electrode at tungsten-rhenium wire place can make the tungsten-rhenium wire between diameter 0.2mm-5mm produce fracture; the concentration of sodium hydrogen carbonate solution is too low; the plasma body produced so very little; plasma body to the shock action on tungsten-rhenium wire surface a little less than; cause the cleaning performance of the impurity such as aquadag on tungsten-rhenium wire surface not good; so; the concentration of sodium hydrogen carbonate solution is 3%-15%; when the tungsten-rhenium wire surface cleaning, both possessed good cleaning performance, also can protect tungsten-rhenium wire not to be damaged.
For the cleaning that makes high tungsten-rhenium wire reaches best effect, the concentration of described sodium hydrogen carbonate solution is 5%-10%.
Because graphite cake has, cost is low, the while can not produce electrolysis at scavenging solution when switching on, and affects scavenging solution, so the second electrode described in step a is graphite cake.
Power supply described in step c is comprised of power supply output system and power control system, and during cleaning, power control system is by output voltage control at 20-120V, and current control, at 2-10A, is controlled at 10-20min action time.Power supply is comprised of output system and the power control system of power supply, and power supply has possessed the controllability to voltage, electric current and action time in output so, for the plasma cleaning of tungsten-rhenium wire provides more controlled technical support.If electric power output voltage and electric current are excessive, long meeting action time, in waiting tune cleanup action process, makes the excess Temperature on tungsten-rhenium wire surface, thereby destroys the physicals of tungsten-rhenium wire, as tungsten-rhenium wire produces fracture etc.; If electric power output voltage and electric current are too small, too short meeting action time is in waiting tune cleanup action process, the quantity of plasma body is few, surging force is little, these all will weaken the surface cleaning ability of plasma body to tungsten-rhenium wire greatly, so power control system by output voltage control at 20-120V, current control, at 2-10A, is controlled at 10-20min action time, can reach to the cleaning of tungsten-rhenium wire desirable effect.
Beneficial effect of the present invention is as follows:
1) using tungsten-rhenium wire and use as the first electrode, coordinate the second electrode and neutral salt cleaning solution, after energising, can produce plasma on the tungsten-rhenium wire surface, and be aided with the compound action of ultra-sonic oscillation, piece surface greasy dirt and impurity are removed, have clean up, complete, the characteristics that surface-brightening is clean and tidy;
2) scavenging solution is selected sodium hydrogen carbonate solution,, containing soda acid, need not carry out the waste liquid processing, also can not work the mischief to environment;
3) a collection of cleaning of tungsten-rhenium wire rolling, flushing dose is large, and the efficiency of cleaning is high.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Embodiment 1
The liquid phase plasma method for cleaning surface of tungsten-rhenium wire comprises the following steps:
A, the tungsten-rhenium wire of rolling directly is immersed in the neutral salt scavenging solution of rinse bath fully as anode, is immersed in graphite as negative electrode in the neutral salt scavenging solution of rinse bath; Described neutral salt scavenging solution is the sodium hydrogen carbonate solution that concentration is 3%-15%, and as preferably, the concentration of described sodium hydrogen carbonate solution is 5%-10%.
B, be to be the negative pole of anode access power supply the positive pole of negative electrode access power supply, and synchronously outside rinse bath, to open ultrasonic generator to carrying out ultrasonic oscillation in rinse bath, continue 5-30min; Described power supply is comprised of power supply output system and power control system, and during cleaning, power control system is by output voltage control at 20-120V, and current control, at 2-10A, is controlled at 10-20min action time.
C, disconnect the access power supply of anode, negative electrode simultaneously and close ultrasonic generator, the rolling tungsten-rhenium wire of anode is taken out;
D, the rolling tungsten-rhenium wire of taking-up is rinsed with clear water, then drying treatment, the tungsten-rhenium wire finished product obtained.
Embodiment 2
The liquid phase plasma method for cleaning surface of tungsten-rhenium wire comprises the following steps:
A, the tungsten-rhenium wire of rolling directly is immersed in the neutral salt scavenging solution of rinse bath fully as negative electrode, is immersed in graphite as anode in the neutral salt scavenging solution of rinse bath; Described neutral salt scavenging solution is the sodium hydrogen carbonate solution that concentration is 3%-15%, and as preferably, the concentration of described sodium hydrogen carbonate solution is 5%-10%.
B, be to be the negative pole of anode access power supply the positive pole of negative electrode access power supply, and synchronously outside rinse bath, to open ultrasonic generator to carrying out ultrasonic oscillation in rinse bath, continue 5-30min; Described power supply is comprised of power supply output system and power control system, and during cleaning, power control system is by output voltage control at 20-120V, and current control, at 2-10A, is controlled at 10-20min action time.
C, disconnect the access power supply of anode, negative electrode simultaneously and close ultrasonic generator, the rolling tungsten-rhenium wire of negative electrode is taken out;
D, the rolling tungsten-rhenium wire of taking-up is rinsed with clear water, then drying treatment, the tungsten-rhenium wire finished product obtained.
Principle of work of the present invention is as follows:
Using tungsten-rhenium wire as the first electrode, using graphite as the second electrode, and the first electrode and the second electrode are inserted in scavenging solution, lay ultrasonic generator outside the cell body of scavenging solution, connect electrode supply simultaneously and opened sonication, telegraph circuit connects into a current path together with scavenging solution, under the effect of electric current, the neutral salt solution negative ions produces and moves freely, at first form bubble around tungsten-rhenium wire, then negative ions is in the situation that reach enough current densities, excite bubble, and generation plasma, under hyperacoustic compound action, the impurity such as aquadag to the tungsten-rhenium wire surface carry out mechanical shock effect and thermal coupling effect, reach the purpose of tungsten-rhenium wire surface cleaning and leveling.
Claims (5)
1. the liquid phase plasma method for cleaning surface of a tungsten-rhenium wire, is characterized in that, the method comprises the following steps:
A, the tungsten-rhenium wire of rolling directly is immersed in the neutral salt scavenging solution of rinse bath fully as the first electrode, nonmetal conducting plates or inert metal conducting plates are immersed in the neutral salt scavenging solution of rinse bath as the second electrode;
B, be the negative or positive electrode of the first electrode access power supply, be another utmost point of the second electrode access power supply, and synchronously outside rinse bath, open ultrasonic generator to carrying out ultrasonic oscillation in rinse bath, continue 5-30min;
C, disconnect the access power supply of the first electrode, the second electrode simultaneously and close ultrasonic generator, the rolling tungsten-rhenium wire of the first electrode is taken out;
D, the rolling tungsten-rhenium wire of taking-up is rinsed with clear water, then drying treatment, the tungsten-rhenium wire finished product obtained.
2. the liquid phase plasma method for cleaning surface of a kind of tungsten-rhenium wire as claimed in claim 1, it is characterized in that: the neutral salt scavenging solution described in step a is the sodium hydrogen carbonate solution that concentration is 3%-15%.
3. the liquid phase plasma method for cleaning surface of a kind of tungsten-rhenium wire as claimed in claim 2, it is characterized in that: the concentration of described sodium hydrogen carbonate solution is 5%-10%.
4. the liquid phase plasma method for cleaning surface of a kind of tungsten-rhenium wire as claimed in claim 1, it is characterized in that: the second electrode described in step a is graphite cake.
5. the liquid phase plasma method for cleaning surface of a kind of tungsten-rhenium wire as claimed in claim 1, it is characterized in that: power supply described in step c is comprised of power supply output system and power control system, during cleaning, power control system by output voltage control at 20-120V, current control, at 2-10A, is controlled at 10-20min action time.
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| CN201310436803.7A CN103498166A (en) | 2013-09-24 | 2013-09-24 | Liquid phase plasma surface cleaning method for tungsten-rhenium wire |
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| CN201310436803.7A CN103498166A (en) | 2013-09-24 | 2013-09-24 | Liquid phase plasma surface cleaning method for tungsten-rhenium wire |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103834983A (en) * | 2014-02-20 | 2014-06-04 | 重庆市科学技术研究院 | Environmental protection energy saving liquid phase plasma cleaning method of metal section bar |
| CN104480485A (en) * | 2014-11-18 | 2015-04-01 | 安徽华东光电技术研究所 | Tungsten-rhenium wire cleaning method for multi-beam cathode filament assembly |
| CN105803499A (en) * | 2016-04-10 | 2016-07-27 | 北京工业大学 | Low-resistivity composite rod of output window needle for millimeter-wave traveling wave pipe |
| CN107794548A (en) * | 2017-09-22 | 2018-03-13 | 深圳市中科摩方科技有限公司 | A kind of surface derusting method of metal material |
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| CN103255467A (en) * | 2012-10-25 | 2013-08-21 | 北京太禹天工科技有限公司 | Novel material surface modification method and apparatus |
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Patent Citations (3)
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| CN1900384A (en) * | 2006-07-05 | 2007-01-24 | 北京航空航天大学 | Process for removing part surface oxidized skin using supersonic wave and electrolytic combination |
| CN102787346A (en) * | 2012-07-31 | 2012-11-21 | 北京天艺创新科技有限公司 | Coating film cleaning process for clean environment-friendly plasma |
| CN103255467A (en) * | 2012-10-25 | 2013-08-21 | 北京太禹天工科技有限公司 | Novel material surface modification method and apparatus |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103834983A (en) * | 2014-02-20 | 2014-06-04 | 重庆市科学技术研究院 | Environmental protection energy saving liquid phase plasma cleaning method of metal section bar |
| CN103834983B (en) * | 2014-02-20 | 2016-02-03 | 重庆市科学技术研究院 | The environment-protecting energy-saving liquor phase plasma cleaning method of shape |
| CN104480485A (en) * | 2014-11-18 | 2015-04-01 | 安徽华东光电技术研究所 | Tungsten-rhenium wire cleaning method for multi-beam cathode filament assembly |
| CN105803499A (en) * | 2016-04-10 | 2016-07-27 | 北京工业大学 | Low-resistivity composite rod of output window needle for millimeter-wave traveling wave pipe |
| CN107794548A (en) * | 2017-09-22 | 2018-03-13 | 深圳市中科摩方科技有限公司 | A kind of surface derusting method of metal material |
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Application publication date: 20140108 |