CN1099331C - Electronic method and equipment for drawing wire of elastic alloy - Google Patents
Electronic method and equipment for drawing wire of elastic alloy Download PDFInfo
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- CN1099331C CN1099331C CN00107764A CN00107764A CN1099331C CN 1099331 C CN1099331 C CN 1099331C CN 00107764 A CN00107764 A CN 00107764A CN 00107764 A CN00107764 A CN 00107764A CN 1099331 C CN1099331 C CN 1099331C
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- brush
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Abstract
The present invention relates to an electric wire drawing method and a device of elastic alloy wires. Firstly, two electrical contacts are arranged on both ends of a mould through which an alloy wire can pass, electric current and voltage are applied to the space between the two electrical contacts, and the electronic wire drawing of the alloy wire is completed. The device of the present invention comprises the mould, two pairs of upper electric brushes and two pairs of lower electric brushes. The alloy wire to be processed orderly passes through the first pair of upper electric brushes and lower electric brushes, the mould, and the second pair of upper electric brushes and lower electric brushes. The present invention enhances the performance and the quality of elastic alloy wire materials, reduces and even completely eliminates intermediate annealing, strengthens production processes, increases a production rate, saves energy consumption and improves ecological environment.
Description
Technical field
The present invention relates to a kind of hot candied method and apparatus of electronics of elastic alloy, belong to the metal material processing technology field.
Background technology
Elastic alloy is meant the high or constant alloy of elastic performance.They have following characteristics: high and constant elastic modelling quantity, little elastic limit, stable temperature coefficient of the elastic modulus and frequency-temperature coefficient, high elastic energy storage, little elastic after effect and elastic hysteresis, high stress relaxation drag, high Qm or low in-fighting etc.They generally all are unoxidizable alloies, require also that sometimes other physical characteristic is arranged (as conduct electricity, low bulk, nonmagnetic etc.).They are mainly used in the various components and parts of making in instrument and meter, automation equipment, precision optical machinery and precise measure, communication, the computing technique, as hairspring, pull spring, bourdon tube, helical spring, reed, bellows, bellows, tuning fork, mechanical filter, delay line, delay reservoir etc., be the very high functional alloy of important precision of a generic request.
The performance of this class alloy and quality except the influence that is subjected to alloying component, production technology also has decisive influence to its performance and quality.With topmost constant modulus alloy Ni42CrTiAl (China's trade mark is 3J53) is example, and its production procedure is: vacuum melting → forging → hot rolling → annealing+pickling or alkali cleaning → cold-drawn (silk) or heat treatment of cold rolling (band) → finished product and check.Wherein, cold worked intermediate deformation amount is about 70%.Cold rolling strap finished product drafts is about 50～60%, and hand-drawn wire finished product deflection is generally 55～70%, and keeps certain plasticity storage.Intermediate annealing is 950～1050 ℃, 10～30min water-cooled.Finished product heat treatment is 950～1000 ℃, 20～30min solid solution, 550～650 ℃ then, 2～3h Ageing Treatment.
Production shows that the weak point of above-mentioned alloy is: 1. performance is too responsive to the variation of composition and heat treatment process parameter, thereby unstable; 2. because intensity is higher, the γ solid solution matrix is easy in distortion compound between precipitating metal owing to alloying level is high, plasticity is not fine, and particularly the cold forming processing characteristics during aximal deformation value is bad, so wire drawing must be carried out intermediate annealing continually, production efficiency is very low; 3. the texturing degree is higher in the hot candied process, and tissue and silk footpath etc. are inhomogeneous, causes directionality, the instability and non-linear of elastic properties of materials; 4. the inhomogeneities in-fighting that also increases alloy of tissue etc. reduces the Qm of elastic alloy; 5. hot candied repeatedly product surface situation is bad, not bright and clean, and cut and micro-crack are arranged, and reduces the performance and the service life of precision element greatly, and this has become the subject matter of actual production and sale.
Summary of the invention
The objective of the invention is to propose a kind of hot candied method and apparatus of electronics of elastic alloy, electronics wire drawing process with the advanced person replaces traditional hand-drawn wire technology, reform the cold-drawn process technology at all, improve the performance and the quality of elastic alloy wire material, reduce even fully phase out intermediate annealing, strengthen production process, boost productivity, energy efficient is improved the ecological environment.
The electronics wire drawing method of the elastic alloy wire that the present invention proposes comprises following each step:
(1) two electric contacts are established at the two ends of the mould that passes through at the alloy silk, and two electric contacts are M: N=6 apart from the ratio of the distance of both mold ends face: 4;
(2) apply electric current and voltage between two electric contacts, wherein the critical current density of peak value of pulse is j=10
3A/mm
2, J=I
Max/ F, wherein I
MaxBe peak point current, F is the sectional area of alloy silk.Operating voltage is V=200～700V, and current pulse width is tp=10
-5～10
-4S, the circuit pulse frequency is f=50～2000Hz, through the electronics wire drawing that has been complete of the alloy silk of above-mentioned processing.
At method of the present invention, specialized designs the electronics drawing apparatus of elastic alloy wire, this device comprises mould and two pairs of upper and lower brushes.Two pairs of upper and lower brushes place two sides of mould respectively, pending wire passes from first pair of upper and lower brush, mould and second pair of upper and lower brush successively, and the first pair of brush apart from mould apart from M and second pair of brush apart from the ratio apart from N of mould is: M: N=6: 4; Power up brush in the every pair of brush is near mould, and lower brush is in the outside of power up brush, and repeatedly saturating mutually.Lower brush places in the sleeve of bearing, and there is sleeve cap the sleeve bottom, and sleeve cap is built-in with spring, and this spring and lower brush join.
Method and apparatus of the present invention is compared with traditional hot candied technology, has the following advantages or characteristics:
1. obviously reduce hot candied power, significantly improve the plastic deformation ability of alloy, therefore improved the wire drawing process performance of material greatly, and energy efficient.
2. reduce even fully phase out hot candied intermediate annealing, simplify and strengthened production process greatly, enhance productivity, increase economic benefit.
3. improve the comprehensive mechanical performance of silk material, improve the uniformity and stability of surface quality and performance, this to Precise Alloy particularly permanent elasticity etc. require the alloy of stable performance highly beneficial.
4. owing to reduce or cancelled and having annealed and relevant cleaning, cleaning process, improved the production ecological environment at all.
5. make the draw shaping of difficult distortion and inductile material (for example high strength, high elastic modulus alloy, refractory metal, intermetallic compound, powdered metallurgical material, conductivity ceramics etc.) be processed into possibility.
Description of drawings:
Fig. 1 is the structural representation of the electronics drawing apparatus that designs of the present invention.
Among Fig. 1, the 1st, sleeve, the 2nd, support, the 3rd, lower brush, the 4th, sleeve, the 5th, draw wire, the 6th, bearing, the 7th, sleeve cap, the 8th, spring, the 9th, lead, the 10th, die supports and mold, the 11st, mould, the 12nd, power up brush.
The specific embodiment
As shown in Figure 1, the electronics drawing apparatus of the present invention's design comprises mould 11 and two pairs of upper and lower brushes 3,12.Two pairs of upper and lower brushes place two sides of mould 11 respectively, pending wire 5 passes from first pair of upper and lower brush, mould and second pair of upper and lower brush successively, and the first pair of brush apart from mould apart from M and second pair of brush apart from the ratio apart from N of mould is: M: N=6: 4; Power up brush 12 in the every pair of brush is near moulds, and lower brush 3 is in the outside of power up brush 12, and repeatedly saturating mutually.Lower brush places in the sleeve 4 of bearing 6, and there is sleeve cap 7 the sleeve bottom, and sleeve cap is built-in with spring 8, and this spring and lower brush 3 join.
As can be seen from the figure, according to this method, introduce high density from the two ends of wire-drawing die toward the deformed area of alloy silk, the pulse current of short pulse duration carries out hot candied process under the effect of electronics.The crucial electric connection that draws adopts the electric brush type contact structures, relies on spring in the upper and lower sleeve to make the alloy in two pairs rise as high as the banks in the brush top up and down keep stable, good electrical contact.Wherein:
(1) distance of joint and wire-drawing die, approaching as much as possible under the condition of operating space permission.
(2) distance of joint and wire-drawing die should keep 6: 4 ratio before and after.
The groove face of (3) two power up brushes and hot candied nib face should be on same horizontal planes.
Principle of the present invention is: according to the metal physics viewpoint, the stress deformation of metal (for example hot candied) is the process that stress promotes dislocation motion.In the process of dislocation motion, if impose highdensity electric current, then in metal, cause the electron wind of high concentration, the blast that electron wind forms will help the promotion to the motion dislocation on the direction of distortion, overcome obstacles, reduce the propagation of dislocation, the metal deformation drag is reduced, slow down and alleviate work hardening, so the plasticity of metal improves greatly.Electronics plastic effect in Here it is the metal is theoretical foundation of the present invention.Though the electronics plastic effect was found more than 30 year, wire drawing process particularly the application on elastic alloy do not see that so far disclosed report is arranged.
Adopt solid capacitor charge and discharge principle to manufacture and design the DC-pulse source apparatus, the amplitude electric current that 1. provides can guarantee to reach wire drawing and add and produce the needed critical current density of electronics plastic effect (about 10 man-hour
5A/cm
2); 2. (0.1～10m/s) variation, the frequency of current impulse can be up to 10 to adapt to hot candied speed
4Hz; 3. for preventing the fusing or the heating of silk, pulse width does not exceed the speed limit 10
2μ s; 4. guarantee the output of high current density, voltage also can be regulated more than 500V.This is a kind of conventional novel power supply that is different from, and characteristics are electric current and frequency very high simultaneously (this also is the difficult point of making); For ensureing being perfectly safe of operating personnel, design should be adopted artificial floating ground.
Take to carry out the hot candied operation of electronics directly for the mode of electricity to deformed area (being the both mold ends face).Key in the device is an electric connection, electrically contacts reliable and stablely in the time of must assurance work, and any loose contact all can cause sparking to burn silk.A kind of sealing Elastic Contact system that proposes among the present invention has solved the integrity problem that draws electricity.
Effective enforcement of electronics wire drawing process, mainly be electric parameter (comprising output voltage, amplitude electric current, pulse frequency, pulse width, dutycycle etc.) and the optimum organization of being out of shape parameter (deformation program, deflection, deformation velocity etc.), consider properties of materials and lubricant condition simultaneously.Implementation step generally is: 1. according to the final size requirement of alloy silk, work out the operational version of pulling out shrinkage; 2. select voltage to determine electric current according to the diameter of silk material, guarantee the basic demand of critical current density; 3. select rational power frequency according to hot candied speed and silk material diameter, and grasp its Changing Pattern; 4. regulate dutycycle and current pulse width, the stability of electric current and silk material temperature when keeping operation; 5. according to the final performance requirement of silk material, determine the hot candied system of adjustment of final pass.
Introduce embodiments of the invention below.
Embodiment one: the hot candied 3J53 alloy of 3J53 alloy electronics silk is pulled out to the adoptable electronics wire drawing process of φ 0.66mm parameter by φ 2.3mm and is:
(1) current density: j=Imax/F=370～1500A/mm
2
(2) operating voltage: 250V
(3) current pulse width tp=80～100 μ s
(4) current pulse frequency f=50～500Hz
The draw speed that alloy is low is 0.1m/s.Pull out shrinkage (deformation rate) ε=1-(d/d
0)
2=90%.Compare with traditional wire drawing, the deflection of electronics wire drawing increases, and hot candied power has descended 30～40%.Cancelled intermediate annealing, surface quality significantly improves (flawless, highly polished).
Embodiment two: the wire drawing of 317L steel wire electronics
The 317L steel wire is pulled out to φ 0.12 adoptable electronics wire drawing process parameter by φ 1.60mm:
(1) current density: j=Imax/F=500～2000A/mm
2
(2) operating voltage: 250V
(3) current pulse width: tp=80～100 μ s
(4) current pulse frequency: f=50～900Hz
The draw speed of steel wire is 0.1m/s.Pull out shrinkage (degree of deformation) ε=1-(d/d
0)
2=99.4%.Compare with traditional wire drawing, the deflection of electronics wire drawing increases greatly, and hot candied power descends 30～40%.The intensity of silk material has reduced by 10%, fully phases out intermediate annealing (2～3 times), and surface quality is improved greatly.
Embodiment three: the wire drawing of Cr17Ni6Mn3 steel wire electronics
The Cr17Ni6Mn3 steel wire is pulled out to φ 0.226 adoptable electronics wire drawing process parameter by φ 2.00mm:
(1) current density: j=Imax/F=350～1500A/mm
2
(2) operating voltage: 250V
(3) current pulse width tp=80～100 μ s
(4) current pulse frequency f=50～600Hz
The draw speed of steel is 0.1-1m/s.Pull out shrinkage (degree of deformation) ε=1-(d/d
0)
2=98.2％。Compare with traditional wire drawing, the deflection of electronics wire drawing increases, and hot candied power descends 20～40%.Internal stress in the silk material descends 5～6%, and intensity descends～10%, and surface quality is obviously improved.
Claims (2)
1, a kind of electronics wire drawing method of elastic alloy wire is characterized in that, this method comprises following each step:
(1) two electric contacts are established at the two ends of the mould that passes through at the alloy silk, and two electric contacts are M: N=6 apart from the ratio of the distance of both mold ends face: 4;
(2) apply electric current and voltage between two electric contacts, wherein the critical current density of peak value of pulse is j=500-2000A/mm
2, operating voltage is V=250V, and current pulse width is tp=80-100 μ s, and the circuit pulse frequency is f=50～900Hz, has promptly finished the electronics wire drawing through the alloy silk of above-mentioned processing.
2, a kind of electronics drawing apparatus of elastic alloy wire, it is characterized in that, this device comprises mould and two pairs of upper and lower brushes, described two pairs of upper and lower brushes place two sides of mould respectively, pending wire passes from first pair of upper and lower brush, mould and second pair of upper and lower brush successively, and the first pair of brush apart from mould apart from M and second pair of brush apart from the ratio apart from N of mould is: M: N=6: 4; Power up brush in the every pair of brush is near mould, and lower brush is in the outside of power up brush, and repeatedly saturating mutually, and described lower brush places in the sleeve of bearing, and there is sleeve cap the sleeve bottom, and sleeve cap is built-in with spring, and this spring and brush join.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00107764A CN1099331C (en) | 2000-05-26 | 2000-05-26 | Electronic method and equipment for drawing wire of elastic alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00107764A CN1099331C (en) | 2000-05-26 | 2000-05-26 | Electronic method and equipment for drawing wire of elastic alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1271630A CN1271630A (en) | 2000-11-01 |
| CN1099331C true CN1099331C (en) | 2003-01-22 |
Family
ID=4578926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00107764A Expired - Fee Related CN1099331C (en) | 2000-05-26 | 2000-05-26 | Electronic method and equipment for drawing wire of elastic alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1099331C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7243348B2 (en) * | 2002-09-19 | 2007-07-10 | Tripwire, Inc. | Computing apparatus with automatic integrity reference generation and maintenance |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043959A (en) * | 1988-12-30 | 1990-07-18 | 东北工学院 | Especially big (just) frequency-temperature coefficient constant modulus alloy |
| DE4108848A1 (en) * | 1991-03-18 | 1992-09-24 | Elefterios Dipl Ing Paraskevas | Wire drawing device with feedback regulation - adjusts pivot position of drawing nozzle to maintain straightness of drawn product |
| US5771727A (en) * | 1995-11-15 | 1998-06-30 | Mannesmann Aktiengesellschaft | Process and device for straight-drawing long drawing material in multiple steps |
-
2000
- 2000-05-26 CN CN00107764A patent/CN1099331C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043959A (en) * | 1988-12-30 | 1990-07-18 | 东北工学院 | Especially big (just) frequency-temperature coefficient constant modulus alloy |
| DE4108848A1 (en) * | 1991-03-18 | 1992-09-24 | Elefterios Dipl Ing Paraskevas | Wire drawing device with feedback regulation - adjusts pivot position of drawing nozzle to maintain straightness of drawn product |
| US5771727A (en) * | 1995-11-15 | 1998-06-30 | Mannesmann Aktiengesellschaft | Process and device for straight-drawing long drawing material in multiple steps |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1271630A (en) | 2000-11-01 |
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| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030122 Termination date: 20180526 |
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| CF01 | Termination of patent right due to non-payment of annual fee |