CN106119945B - Termination processing method when a kind of drawing iridium and its B alloy wire - Google Patents
Termination processing method when a kind of drawing iridium and its B alloy wire Download PDFInfo
- Publication number
- CN106119945B CN106119945B CN201610632650.7A CN201610632650A CN106119945B CN 106119945 B CN106119945 B CN 106119945B CN 201610632650 A CN201610632650 A CN 201610632650A CN 106119945 B CN106119945 B CN 106119945B
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- China
- Prior art keywords
- iridium
- wire
- iridium wire
- nacl
- anode
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Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
- C25F1/02—Pickling; Descaling
- C25F1/12—Pickling; Descaling in melts
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/02—Etching
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention discloses termination processing method when a kind of drawing iridium and its B alloy wire, iridium wire of the diameter less than 1.0mm is put into melting Nacl and is electrolysed, DC voltage 80V, after iridium wire is slowly put into NaCl molten baths 100mm depth, slowly enhance again, All Time is 3min, during electrolysis, it is electrolysed using direct current, using iron staff as negative electrode, iridium wire is anode, when voltage is risen near 100V, nearby obvious anode effect occurs in the iridium wire of anode, bright sparklet is now had around iridium wire, bubble stops at iridium wire and nearby separated out, when there is anode effect, reducing voltage makes anode effect disappear, now the corrosion rate of iridium is most fast.The present invention using electrochemical corrosion in melt NaCl carry out drawing head processing can avoid occurring in mechanical grinding irregularly, ovality is poor, finish is poor and the problem of surface scratch etc..
Description
Technical field
The invention belongs to machining technology field, specifically, end when being related to a kind of drawing iridium and its B alloy wire
Reason method.
Background technology
Iridium is a kind of precious metal, and its chemical property is highly stable to be difficult corrosion and have below 600 DEG C obvious crisp
Property, during iridium wire drawing, it is required for wearing silk before each drawing, this needs the 50~100mm length range interior diameter gradual changes of silk material head.
During other common materials wire drawings, the good material of plasticity can obtain reducing head by way of normal temperature cold conditions deforms；Tungsten, molybdenum filament etc.
The material of normal temperature plasticity difference can obtain reducing head by way of chemical attack.But both modes are unsuitable for iridium.
Usual iridium wire head is obtained by way of mechanical grinding, but as silk material diameter is more and more thinner, the difficulty of polishing
Degree is increased, but its effect is difficult to ensure that.Iridium and its alloy belong to brittle materials and are easily broken off in process, table during polishing
Face is also easy to produce cut, and this cut often leads to silk material wired head in drawing process and is easy to be broken, and causes production not hold
It is continuous to carry out.When iridium wire diameter is less than 1.0mm, polishing becomes abnormal difficult, and broken end frequently makes drawing in silk material drawing process
Pull out and be difficult to continue progress.When iridium wire diameter is less than 0.6mm, the head of mechanical grinding in drawing process end breakage rate significantly on
Rise, silk material drawing production is almost difficult to continue progress.
The content of the invention
It is an object of the invention to provide termination processing method when a kind of drawing iridium and its B alloy wire, this method is used molten
Melting in NaCl electrochemical corrosion and carrying out drawing head processing can avoid occurring in mechanical grinding that irregular, ovality is poor, finish
The problem of difference and surface scratch etc., pure NaCl fusing point is identical with 800 DEG C of the recrystallization start temperature of iridium for 801 DEG C, at this
At a temperature of corrode, it is on the one hand lasting to carry out because temperature is sufficiently high, and in conductive melt and be electrolysed newborn Cl2The effect of molecule
Lower corrosion rate is sufficiently fast, while temperature is sufficiently low, iridium wire will not be caused to recrystallize, just broken if iridium wire recrystallizes
Fibr tissue is broken, postorder drawing is just difficult to continue
Its concrete technical scheme is：
Termination processing method, comprises the following steps when a kind of drawing iridium and its B alloy wire：Diameter is less than to 1.0mm iridium wire
It is put into melting Nacl and is electrolysed, DC voltage 80V, after iridium wire is slowly put into NaCl molten baths 100mm depth, then is slowly lifted out
Come, All Time 3min, during electrolysis, be electrolysed using direct current, using iron staff as negative electrode, iridium wire is anode, when voltage liter
When near to 100V, nearby obvious anode effect occurs in the iridium wire of anode, and bright sparklet is now had around iridium wire,
Bubble stops at iridium wire and nearby separated out, and when there is anode effect, reducing voltage makes anode effect disappear, now the corrosion speed of iridium
Degree is most fast.
Further, iridium wire is put into after being cleaned in clear water and measured, now 0.1~0.14mm of iridium wire end tube reducing.
Compared with prior art, beneficial effects of the present invention are：
The present invention uses the electrochemical corrosion progress drawing head processing in NaCl is melted to avoid occurring in mechanical grinding
Irregularly, ovality is poor, finish is poor and the problem of surface scratch etc., pure NaCl fusing point is opened for the recrystallization of 801 DEG C and iridium
800 DEG C of beginning temperature is identical, corrodes at this temperature, on the one hand lasting to carry out because temperature is sufficiently high, and in conductive melt
With the newborn Cl of electrolysis2Corrosion rate is sufficiently fast in the presence of molecule, while temperature is sufficiently low, and iridium wire will not be caused to occur to tie again
It is brilliant.The present invention is the region gradual change tube reducing by way of being electrolysed in melting NaCl to 50~100mm of iridium wire termination, for lower one
Silk is worn during drawing and provides condition.
Embodiment
Technical scheme is described in more detail with reference to specific embodiment.
Embodiment 1
Diameter 0.4mm iridium wire, it is put into melting Nacl and is electrolysed, DC voltage 80V, iridium wire is slowly put into NaCl and melted
Slowly enhanced again after the 100mm depth of pond, All Time 3min, iridium wire is put into after being cleaned in clear water and measured, now iridium
Silk end tube reducing 0.1mm, afterwards 100mm length ranges interior diameter smooth transition.Carried out wearing a drawing with this silk material afterwards, into
Power is 96%.
Embodiment 2
Diameter 0.6mm iridium wire, it is put into melting Nacl and is electrolysed, DC voltage 80V, iridium wire is slowly put into NaCl and melted
Slowly enhanced again after the 100mm depth of pond, All Time 3min, iridium wire is put into after being cleaned in clear water and measured, now iridium
Silk end tube reducing 0.12mm, afterwards 100mm length ranges interior diameter smooth transition.Carried out wearing a drawing with this silk material afterwards,
Success rate is 97%.
Embodiment 3
Diameter 0.5mm iridium wire, it is put into melting Nacl and is electrolysed, DC voltage 80V, iridium wire is slowly put into NaCl and melted
Slowly enhanced again after the 100mm depth of pond, All Time 3min, iridium wire is put into after being cleaned in clear water and measured, now iridium
Silk end tube reducing 0.14mm, afterwards 100mm length ranges interior diameter smooth transition.Carried out wearing a drawing with this silk material afterwards,
Success rate is 98%.
Embodiment 4
Diameter 1.6mm iridium wire, by the way of conventional mechanical polishing, carried out wearing a drawing afterwards with this silk material, into
Power is 9.0%.
Find, when iridium wire diameter is more than 1.5mm, have by the way of conventional mechanical polishing sufficiently high in practical operation
Efficiency and a success rate is worn, when iridium wire diameter is less than 1.0mm, electrochemical corrosion is worn a success rate and substantially accounted for due to very high
It is excellent.As iridium wire diameter is thinner, the advantage of electrochemical corrosion is more obvious.
The foregoing is only a preferred embodiment of the present invention, protection scope of the present invention not limited to this, any ripe
Those skilled in the art are known in the technical scope of present disclosure, the letter for the technical scheme that can be become apparent to
Altered or equivalence replacement are each fallen within protection scope of the present invention.
Claims (2)
1. termination processing method when a kind of drawing iridium and its B alloy wire, it is characterised in that comprise the following steps：Diameter is less than
1.0mm iridium wire is put into melting Nacl and is electrolysed, DC voltage 80V, after iridium wire is slowly put into NaCl molten baths 100mm depth,
Slowly enhance, All Time 3min, during electrolysis, be electrolysed using direct current again, using iron staff as negative electrode, iridium wire is sun
Pole, when voltage is risen near 100V, nearby obvious anode effect occurs in the iridium wire of anode, is now had around iridium wire bright
Bright sparklet, bubble stops at iridium wire and nearby separated out, and when there is anode effect, reducing voltage makes anode effect disappear, this
When iridium corrosion rate it is most fast.
2. termination processing method when drawing iridium according to claim 1 and its B alloy wire, it is characterised in that be put into iridium wire
Measured after being cleaned in clear water, now 0.1~0.14mm of iridium wire end tube reducing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610632650.7A CN106119945B (en) | 2016-08-01 | 2016-08-01 | Termination processing method when a kind of drawing iridium and its B alloy wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610632650.7A CN106119945B (en) | 2016-08-01 | 2016-08-01 | Termination processing method when a kind of drawing iridium and its B alloy wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106119945A CN106119945A (en) | 2016-11-16 |
| CN106119945B true CN106119945B (en) | 2017-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610632650.7A Expired - Fee Related CN106119945B (en) | 2016-08-01 | 2016-08-01 | Termination processing method when a kind of drawing iridium and its B alloy wire |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102078954A (en) * | 2009-11-27 | 2011-06-01 | 曹传新 | Method for manufacturing metal iridium blank and anomalous wire thereof |
| CN102776537A (en) * | 2012-07-17 | 2012-11-14 | 北京航空航天大学 | Method for preparing Ir layer on Pt matrix in chloride fused salt system through electrolytic deposition |
| CN103806044A (en) * | 2014-01-24 | 2014-05-21 | 中国人民解放军国防科学技术大学 | Method for preparing iridium coating by virtue of electrolysis in cesium hexachloroiridate-chloride fused salt system |
-
2016
- 2016-08-01 CN CN201610632650.7A patent/CN106119945B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102078954A (en) * | 2009-11-27 | 2011-06-01 | 曹传新 | Method for manufacturing metal iridium blank and anomalous wire thereof |
| CN102776537A (en) * | 2012-07-17 | 2012-11-14 | 北京航空航天大学 | Method for preparing Ir layer on Pt matrix in chloride fused salt system through electrolytic deposition |
| CN103806044A (en) * | 2014-01-24 | 2014-05-21 | 中国人民解放军国防科学技术大学 | Method for preparing iridium coating by virtue of electrolysis in cesium hexachloroiridate-chloride fused salt system |
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| Publication number | Publication date |
|---|---|
| CN106119945A (en) | 2016-11-16 |
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