CN102175535A - Method for determining gradient of traction wheel of enameled wire mold with diameter less than 0.2 mm - Google Patents
Method for determining gradient of traction wheel of enameled wire mold with diameter less than 0.2 mm Download PDFInfo
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- CN102175535A CN102175535A CN 201110036643 CN201110036643A CN102175535A CN 102175535 A CN102175535 A CN 102175535A CN 201110036643 CN201110036643 CN 201110036643 CN 201110036643 A CN201110036643 A CN 201110036643A CN 102175535 A CN102175535 A CN 102175535A
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Abstract
The invention provides a method for determining gradient of traction wheels of an enameled wire mold with a diameter less than 0.2 mm. The method comprises the steps of: after pulling and annealing at a high temperature, measuring elastic modulus E1, copper volume rate V1, paint film volume rate V2 and elastic modulus E of copper in the enameled wire with a conductor diameter greater than 0.2mm at normal temperature; according to the elastic modulus E1 and the elastic modulus E, substituting into a formula, namely E=EIV1+ E2V2, for calculating the elastic modulus E2 at normal temperature; measuring the elastic modulus E at 200 DEG C, 400 DEG C, 500 DEG C and 600 DEG C respectively and calculating the elastic modulus E1200, E1400, E1500 and E1600; measuring the copper volume rate V1, the paint film volume rate V2 of the enameled wire with the conductor diameter less than 0.2 mm and substituting into the formula, namely E=EIV1+ E2V2; and calculating the elastic modulus E of the enameled wire with the conductor diameter less than 0.2 mm, substituting the elastic modulus E into the formula, namely sigma=epsilon, to acquire the strain value epsilon of the enameled wire with the diameter less than 0.2 mm, and the epsilon is the gradient of the traction wheel.
Description
Technical field
The present invention relates to the scrap build that conductor diameter is the following enameled wire mold painting of φ 0.2mm, relate in particular to the method resulting equipment of a kind of definite diameter less than 0.2mm enameled wire mould traction wheel degree of tilt.
Background technology
Domestic conductor diameter is justified less than 0.2mm generally all adopted the felt japanning when line is painted, we know when adopting the felt japanning to make enameled wire, because of it exists that circularity is undesirable, day and night temperature causes problems such as paint film is inhomogeneous, to be difficult to be suitable for to the high product of dimension precision requirement, for this reason, must adopt mold painting; And mold painting is broken string concerning conductor diameter less than problem maximum the wire rod of 0.2mm, how to reduce the broken string problem in the drawing process, is to be solved at present.Cause the factor that breaks a lot, most important factor at first is an equipment.The traction wheel gradient of enamelling machine and straining pulley are the principal elements that influences fine rule japanning outage.Straining pulley rotates with the speed slower than traction wheel, and the wire rod of giving the japanning of first road is with certain force of strain.Because whether straining pulley tension force is suitable, just can confirm by visual, be the problem that will solve at present so improve the gradient of traction wheel.The stretching of wire rod was processed with gradient when traction wheel was painted for absorbing on wheel, made whenever to be coated with once lacquer, all wire rod was had traction action.
Referring to Fig. 2, the gradient computing formula of existing traction wheel is as follows:
Gradient=(d2-d1)/d1 * 100(% every time)
And the gradient of the traction wheel that goes out according to existing formulae design, when being applied to the mold painting less than the 0.2mm wire rod, the highest 70%-80% that can only reach of its mobility can not really solve the broken string problem of present conductor diameter less than the wire rod of 0.2mm.
Mobility=(activity duration-the loss time)/activity duration
Or during mobility=time of sowing/chief engineer
How to address this problem, become the technical barrier of this area, do not have the method and apparatus that can be used to address this problem in the prior art.
Summary of the invention
Mobility when the purpose of this invention is to provide a kind of definite diameter and can improve conductor diameter less than the 0.2mm fine rule with mold painting less than the resulting equipment of method of 0.2mm enameled wire mould traction wheel degree of tilt reduces outage.The present invention also will provide this method designed go out, the equipment that changes fine rule mould traction wheel degree of tilt.
In order to realize the foregoing invention purpose, the present invention adopts following technical scheme to realize:
A kind of definite diameter may further comprise the steps less than the method for 0.2mm enameled wire mould traction wheel degree of tilt:
(1), records in the elastic modulus E 1, enameled wire of copper in normal temperature lower conductor diameter scribbles paint film greater than 0.2mm the enameled wire copper volume fraction V1, paint film volume fraction V2 and diameter greater than the elastic modulus E of the enameled wire of 0.2mm according to after the drawing by high temperature annealing;
(2) according to the measured E1 of step (1) and diameter greater than the elastic modulus E of the enameled wire of 0.2mm, pass through amendment type: E=E1V1+E2V2 calculates the elastic modulus E 2 of paint film under the normal temperature;
(3), 400 ℃, 500 ℃, record the elastic modulus E of conductor diameter under 600 ℃ of temperature greater than the enameled wire of 0.2mm respectively at 200 ℃;
(4) data that record of E2 that calculates according to step (2) and step (3) calculate in conductor diameter scribbles paint film greater than 0.2mm the enameled wire copper at 200 ℃, and 400 ℃, 500 ℃, the elastic modulus E 1 under 600 ℃
200, E1
400, E1
500, E1
600
(5) conductor diameter that step (4) is calculated scribbles the elastic modulus E 1 of the enameled wire copper of paint film greater than 0.2mm
200, E1
400, E1
500, E1
600, the E2 that calculates of step (2), and the conductor diameter that records is brought formula: E=E1V1+E2V2 respectively into less than copper volume fraction V1, paint film volume fraction V2 in the 0.2mm enameled wire; Calculate the elastic modulus E of conductor diameter less than the 0.2mm enameled wire:
(6) among the elastic modulus E substitution formula σ=E ε of conductor diameter less than the 0.2mm enameled wire with step (5), rule of thumb, the σ value is 2MPa;
(7) calculate a plurality of strain value εs of diameter less than the 0.2mm enameled wire, strain value ε is the gradient of diameter less than 0.2mm enameled wire mould traction wheel.
Use above method, can solve the design problem of the gradient of traction wheel, the strain value that traction wheel is calculated according to the present invention, design the gradient on the traction wheel, mobility by the traction wheel of this making has improved greatly, thus the mobility problem when having solved the mold painting that improves less than the 0.2mm wire rod.
The present invention has following prioritization scheme:
1, the described conductor diameter of step (1), is selected to adopt to be measured as the enameled wire that diameter is 0.47mm, as the typical sampling of diameter greater than the 0.2mm self-adhesive enameled wire through a large amount of experiments of inventor greater than the 0.2mm enameled wire;
2, the described conductor diameter of step (5), is selected to adopt to be measured as the enameled wire that diameter is 0.14mm, as the typical sampling of diameter less than the 0.2mm enameled wire through a large amount of experiments of inventor less than the 0.2mm enameled wire;
3, described enameled wire is a self-adhesive enameled wire;
4, to step (7) described " according to the strain value ε that calculates, its strain value ε is the gradient of fine rule mould traction wheel ", through experiment and the screening of inventor to mass data, the gradient of selecting the employing traction wheel is 0.06～0.08% data.Optimum value is: the gradient of described traction wheel is 0.07%.
Description of drawings
Fig. 1 is the horizontal chamber furnace (oven) synoptic diagram;
Fig. 2 is the traction wheel synoptic diagram;
Fig. 3 is the elastic modulus under 0.47 and 0.14 the enameled wire high temperature;
Fig. 4 is a strain calculated value under 0.14 the enameled wire high temperature.
Specific embodiment
Shown in Fig. 1,2,3,4, at first obtain the elastic modulus of enameled wire in the enamelling machine stove by the hot test result, the line-transect that hot test is adopted is 0.47mm and 0.14mm Self-binding cord.Enameled wire in the roasting japanning process, owing to be subjected to the tractive of traction wheel all the time, and produce strain (stretching), concerning elastic body, the relational expression of its ess-strain is shown in following formula:
σ=?Eε
σ wherein: stress, E: elastic modulus, ε: strain
The tested conductor diameter is greater than the elastic modulus of 0.2mm self-adhesive enameled wire.At first by relative thicker 0.47mm Self-binding cord is carried out high temperature tension test to obtain corresponding master data:
After tested, after full annealing, the elastic modulus E 1 that scribbles the enameled wire copper of paint film when temperature is 20 ℃ is 81.7Gpa.
For the examination wire rod is 0SB-1EIW0.47
Test temperature: 20,200,400,500,600 ℃
Draw speed: 20mm/min
Distance between punctuate: 600mm
Test is adopted and to be read strain is 0.1% o'clock stress value mode.It the results are shown in Table 1:
Table 1
| |
20 | 200 | 400 | 500 | 600 |
| 0.47 elastic modulus (E) | 62.00 | 56.00 | 48.50 | 40.50 | 23.00 |
Press the 0SB-1EIW0.47 size and constitute calculating, the shared volume fraction of its paint film is 25.36%, and the shared volume fraction of copper is 74.64%, establishes the paint film elastic modulus and varies with temperature and can ignore, because enameled wire is the complex of copper cash and paint film, so need E is carried out following correction:
E?=?E1V1+E2V2
Wherein E1 is the elastic modulus of copper; E2 is the elastic modulus of paint film; V1 is the volume fraction of copper; V2 is the volume fraction of paint film.Then can calculate the copper conductor elastic modulus with the variation of temperature value by above-mentioned complex formula.
In temperature is 20,200,400,500, and in the time of 600 ℃, the elastic modulus E 1 of copper is about 81.7 respectively; 74.7; 64.7; 54.0; 30.7.
Because 0.14 wire rod is very thin, be difficult to during test stress guarantee accuracy and consistance, so the stress of 0.14 wire rod need adopt account form to obtain.
The size of pressing the T0SB-0EIW0.14 wire rod constitutes to be calculated, and the shared volume fraction of its paint film is 50.51%, and the shared volume fraction of copper is 49.49%, then according to the test findings of above-mentioned 0.47 wire rod elastic modulus, can extrapolate the elastic modulus of 0.14 wire rod, and it the results are shown in Table 2
Table 2
| |
20 | 200 | 400 | 500 | 600 |
| 0.14 elastic modulus (E ’） | 42.46 | 38.48 | 33.51 | 28.20 | 16.60 |
By experience, the optimum tension during enamelled wire paint is 2MPa, according to the elastic modulus of above-mentioned 0.14 wire rod of extrapolating, can calculate the strain at high temperature of 0.14 wire rod thus.
Referring to Fig. 1, Self-binding cord is after annealing furnace 1 full annealing, enter japanning portion 3 through straining pulley 2 by guide wheel 5, japanning portion 3 be provided with down be coated with stove 4 and on be coated with stove 7, this time be coated with stove 4 and on be coated with stove 7 the rear end respectively be provided with a guide wheel 5, and this time be coated with stove 4 and on be coated with stove 7 the rear end respectively be provided with a traction wheel 6, the enameled wire that scribbles paint film is received to admission machine 8.
When supposing japanning, the temperature in the oven is more than 400 ℃, and then the strain that this moment, the 0.14mm wire rod produced is at least 0.06～0.08%, and then the degree of tilt with traction wheel is set at 0.07% o'clock, and makes the traction wheel full pattern by this and verify that the result is as follows:
| ? | (traction wheel gradient 0.03%) mobility before improving | Improve back (traction wheel gradient 0.07%) mobility |
| Produce the 0.14mm Self-binding cord | 77% | 90% |
By The above results as can be known, improve the back when producing the following fine rule of 0.2mm, outage (1-mobility) is minimizing obviously, and effect is very outstanding.
Claims (8)
1. a definite diameter may further comprise the steps less than the method for 0.2mm enameled wire mould traction wheel degree of tilt:
(1), records in the elastic modulus E 1, enameled wire of copper in normal temperature lower conductor diameter scribbles paint film greater than 0.2mm the enameled wire copper volume fraction V1, paint film volume fraction V2 and diameter greater than the elastic modulus E of the enameled wire of 0.2mm according to after the drawing by high temperature annealing;
(2) according to the measured E1 of step (1) and diameter greater than the elastic modulus E of the enameled wire of 0.2mm, pass through amendment type: E=E1V1+E2V2 calculates the elastic modulus E 2 of paint film under the normal temperature;
(3), 400 ℃, 500 ℃, record the elastic modulus E of conductor diameter under 600 ℃ of temperature greater than the enameled wire of 0.2mm respectively at 200 ℃;
(4) data that record of E2 that calculates according to step (2) and step (3) calculate in conductor diameter scribbles paint film greater than 0.2mm the enameled wire copper at 200 ℃, and 400 ℃, 500 ℃, the elastic modulus E 1 under 600 ℃
200, E1
400, E1
500, E1
600
(4) conductor diameter that step (4) is calculated scribbles the elastic modulus E 1 of the enameled wire copper of paint film greater than 0.2mm
200, E1
400, E1
500, E1
600, the E2 that calculates of step (2), and the conductor diameter that records is brought formula: E=E1V1+E2V2 respectively into less than copper volume fraction V1, paint film volume fraction V2 in the 0.2mm enameled wire; Calculate the elastic modulus E of conductor diameter less than the 0.2mm enameled wire:
(6) among the elastic modulus E substitution formula σ=E ε of conductor diameter less than the 0.2mm enameled wire with step (5), rule of thumb, the σ value is 2MPa;
(7) calculate a plurality of strain value εs of diameter less than the 0.2mm enameled wire, strain value ε is the gradient of diameter less than 0.2mm enameled wire mould traction wheel.
2. a kind of definite diameter according to claim 1 is characterized in that less than the method for 0.2mm enameled wire mould traction wheel degree of tilt: the described conductor diameter of step (1) is that selection measurement diameter is the enameled wire of 0.47mm greater than the elastic modulus of 0.2mm enameled wire.
3. a kind of definite diameter according to claim 1 is characterized in that less than the method for 0.2mm enameled wire mould traction wheel degree of tilt: the described conductor diameter of step (5) is that selection measurement diameter is the enameled wire of 0.14mm less than the elastic modulus of 0.2mm enameled wire.
4. according to claim 1, the 2 or 3 described a kind of definite diameters method less than 0.2mm enameled wire mould traction wheel degree of tilt, it is characterized in that: described enameled wire is a self-adhesive enameled wire.
5. a kind of definite diameter according to claim 1 is less than the method for 0.2mm enameled wire mould traction wheel degree of tilt, it is characterized in that: the strain value ε that the described basis of step (7) calculates, its strain value ε is the gradient of fine rule mould traction wheel, selects to determine that the gradient of traction wheel is 0.06～0.08%.
6. a kind of according to claim 1 or 5 definite diameter is less than the method for 0.2mm enameled wire mould traction wheel degree of tilt, and it is characterized in that: the gradient of described traction wheel is defined as 0.07%.
7. the described a kind of definite diameter of claim 1 is less than the resulting equipment of method of 0.2mm enameled wire mould traction wheel degree of tilt, japanning portion be provided with down be coated with stove and on be coated with stove, this time be coated with stove and on be coated with stove the rear end respectively be provided with a guide wheel; And this time be coated with stove and on be coated with stove the rear end respectively be provided with a traction wheel, it is characterized in that: the gradient of described traction wheel is 0.06～0.08%.
8. a kind of definite diameter according to claim 7 is characterized in that less than the resulting equipment of method of 0.2mm enameled wire mould traction wheel degree of tilt: the gradient of described traction wheel is 0.07%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110036643 CN102175535A (en) | 2011-02-12 | 2011-02-12 | Method for determining gradient of traction wheel of enameled wire mold with diameter less than 0.2 mm |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110036643 CN102175535A (en) | 2011-02-12 | 2011-02-12 | Method for determining gradient of traction wheel of enameled wire mold with diameter less than 0.2 mm |
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|---|---|
| CN102175535A true CN102175535A (en) | 2011-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110036643 Pending CN102175535A (en) | 2011-02-12 | 2011-02-12 | Method for determining gradient of traction wheel of enameled wire mold with diameter less than 0.2 mm |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899967A (en) * | 2014-04-23 | 2014-07-02 | 管存忠 | LED string |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3710756A (en) * | 1966-08-22 | 1973-01-16 | Mafit Manufacture De Fils Isol | Apparatus for enameling wire |
| JPH11213783A (en) * | 1998-01-28 | 1999-08-06 | Totoku Electric Co Ltd | Apparatus for manufacturing enameled wire |
| CN201681667U (en) * | 2009-09-17 | 2010-12-22 | 江西铜业股份有限公司 | Enameled wire breakage prevention sheath |
| CN102142307A (en) * | 2011-02-12 | 2011-08-03 | 苏州市新的电工有限公司 | Equipment for changing gradient of traction wheel of fine line mould and improving operation rate |
| CN201984906U (en) * | 2011-02-12 | 2011-09-21 | 苏州市新的电工有限公司 | Device for changing gradient of traction wheel of fine line mould and improving operation rate |
-
2011
- 2011-02-12 CN CN 201110036643 patent/CN102175535A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3710756A (en) * | 1966-08-22 | 1973-01-16 | Mafit Manufacture De Fils Isol | Apparatus for enameling wire |
| JPH11213783A (en) * | 1998-01-28 | 1999-08-06 | Totoku Electric Co Ltd | Apparatus for manufacturing enameled wire |
| CN201681667U (en) * | 2009-09-17 | 2010-12-22 | 江西铜业股份有限公司 | Enameled wire breakage prevention sheath |
| CN102142307A (en) * | 2011-02-12 | 2011-08-03 | 苏州市新的电工有限公司 | Equipment for changing gradient of traction wheel of fine line mould and improving operation rate |
| CN201984906U (en) * | 2011-02-12 | 2011-09-21 | 苏州市新的电工有限公司 | Device for changing gradient of traction wheel of fine line mould and improving operation rate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899967A (en) * | 2014-04-23 | 2014-07-02 | 管存忠 | LED string |
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Application publication date: 20110907 |