CN101226793B - Method for manufacturing high-yield strength cuprum flat wire and wire-drawing device - Google Patents
Method for manufacturing high-yield strength cuprum flat wire and wire-drawing device Download PDFInfo
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- CN101226793B CN101226793B CN2007101856870A CN200710185687A CN101226793B CN 101226793 B CN101226793 B CN 101226793B CN 2007101856870 A CN2007101856870 A CN 2007101856870A CN 200710185687 A CN200710185687 A CN 200710185687A CN 101226793 B CN101226793 B CN 101226793B
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Abstract
A process for preparing copper strap wires with high-yield strength and a wire drawing device belong to the technical field of transformer, which are used to resolve the manufacturing problem of copper strap wires with high-yield strength. The technical scheme is that the copper strap wires are produced by drawing and strengthening flexible copper strap wires, the manufacturing process includes steps of confirming cross-section size of half-finished product of flexible copper strap wires, selecting flexible copper strap wires, preparing copper strap wires with high-yield strength and the like. The wire drawing device employs equal diameter drawing wheels, is provided with regulating wheels, and the regulating wheel shaft and the wire drawing shaft have an inclination of 3 degree to 8 degree. The invention creates the wire drawing technique according to cross-section reduction and yield strength relation, uses special-purpose wire drawing device in wire drawing process, thereby radically avoiding the camber produced by common wire drawing machine and resolving the problem of umbrella winding coil. Products produced by the technique have good coiling process, can increase mechanical rigidity and short circuit resistance ability and prolong the service life of transformer.
Description
Technical field
The present invention relates to a kind of preparation method of lead, particularly make the preparation method of the copper strap wire of transformer ' s type coil employing, belong to the transformer technology field.
Background technology
As everyone knows, winding coil is one of most important parts in the transformer, and enamelled wire is the main raw material(s) of coiling, and its quality quality directly has influence on the useful life and the operational effect of transformer.Along with the fast development of electric utility, each transformer and manufacture of winding wires producer all are being devoted to study the quality that how further improves the Transformer Winding coil for self the development and the market demand.Wherein, the research of half-hard state copper conductor and application are one of them important achievements in research, and its application has improved the impact resistance of winding coil greatly, has prolonged the useful life of transformer.At present, the processing method of half-hard state copper conductor has: rolling process, interpolation rare metal change the one-tenth point-score of copper cash base and control three kinds of annealing temperature methods.Rolling process processing is simple and practical, but this kind method is no longer suitable when the lead yield strength surpasses 200MPa, and this kind method is had relatively high expectations to frock; Change copper cash base becomes point-score can satisfy the requirement of high-yield strength but manufacturing cost is higher; Control annealing temperature method according to the characteristic curve of copper as can be seen, and is because temperature is very big to the yield strength influence of copper, wayward as suitability for industrialized production.
Summary of the invention
The present invention is used to overcome the defective of prior art and provides a kind of product that makes to obtain stable high-yield strength, the high-yield strength copper strap wire preparation method that planarization is good and production cost is lower.The present invention also provides the wire-drawing frame of realizing that this method is used.
The alleged problem of the present invention is that following technical scheme solves:
A kind of high-yield strength copper strap wire preparation method, its special feature is, and it adopts soft attitude copper strap wire to make raw material to strengthen through wire drawing and form, and its yield strength is 200～250Mpa, and carries out as follows:
A. determine the soft attitude copper strap wire of semi-finished product cross sectional dimensions: whenever reduce one percentage point, yield strength according to copper strap wire its cross section size dimension in wire drawing is handled and increase by the relation of 50～55Mpa, determine soft attitude copper strap wire cross sectional dimensions in conjunction with the sectional dimension of finished product high-yield strength copper strap wire;
B. choose soft attitude copper strap wire: the cross section size dimension of determining according to step a prepares soft attitude copper strap wire, and described soft attitude copper strap wire yield strength is 65～90MPa, and percentage elongation is 35～45%;
C. prepare the high-yield strength copper strap wire: above-mentioned soft attitude copper strap wire is drawn to required sectional dimension through wire-drawing frame, and described pulling wheel adopts the flat wheel of equal diameter.
Above-mentioned high-yield strength copper strap wire preparation method, described soft attitude copper strap wire is taken from hot-pressed copper strap wire, or takes from behind the wire-drawing shape through the abundant copper strap wire of annealing again.
Above-mentioned high-yield strength copper strap wire wire-drawing frame, comprise pulling wheel, motor and die holder in the formation, described driven by motor pulling wheel rotates, die holder is positioned at the pulling wheel side, described pulling wheel 1 is the flat wheel of equal diameter, set up and adjust wheel 13, adjust wheel and be arranged side by side with pulling wheel, adjusting wheel shaft and wire drawing wheel shaft has 3 °～8 ° angle excursion.
Above-mentioned high-yield strength copper strap wire wire-drawing frame, described adjustment wheel is positioned at adjusts wheel shaft 10 1 ends, adjusting the wheel shaft middle part and the other end is supported by back shaft 11 and support 9 respectively, described back shaft one end is provided with support set 11-1, support set cooperates with regulating wheel between centers crack, the back shaft other end be positioned at axle bed 12, with the axle bed matched in clearance, axle bed and frame 6 are affixed, described support one end cooperates with regulating wheel between centers crack, the support other end is fixed in the supporting plate 7 by two positioning bolts 8, and supporting plate and frame are fixed.
The present invention formulates drawing process according to sectional dimension decrement and yield strength relation again by at first preparing soft attitude copper strap wire, and then produces the copper strap wire of high-yield strength.In drawing process, adopt special-purpose wire-drawing frame, fundamentally stopped the camber that common wire drawing machine produced, solved winding coil umbrella shape problem.In addition, the copper strap wire that utilizes this processing method to produce is analyzed from microcosmic, the surface of copper strap wire is different with heart portion deflection, and its areal deformation amount is greater than heart portion, and surperficial yield strength is greater than heart portion, i.e. " outer hard-core is soft " is so utilize this product manufactured that winding process is preferably arranged.The present invention can improve the anti-short circuit capability of coil mechanical strength and coil, prolongs the useful life of transformer.
Description of drawings
Fig. 1 is a wire-drawing frame structural representation of the present invention (overlooking);
Fig. 2 is that the A of Fig. 1 is to view;
Fig. 3 is common wire-drawing frame structural representation.
Each parts label is expressed as follows among the figure: 1. pulling wheel; 2. copper strap wire; 3. die holder; 4. base plate; 5. motor; 6. frame; 7. supporting plate; 8. positioning bolt; 9. support; 10. adjustment wheel shaft; 11. back shaft; 11-1. support set; 12. axle bed; 13. adjust wheel; 14. taper pulling wheel.
Embodiment
The inventive method mainly is made of following three steps: 1. the selected soft attitude copper strap wire of semi-finished product cross sectional dimensions: whenever reduce the relation that its yield strength of one percentage point increases by 50～55Mpa according to the length and width size of cross section in the copper strap wire drawing process, reach the cross sectional dimensions of the desired yield strength value of high-yield strength finished product copper strap wire, the soft attitude copper strap wire of cross section size dimension calculating semi-finished product.2. prepare soft attitude copper strap wire: the sectional dimension of determining according to step a prepares soft attitude copper strap wire, and soft attitude copper strap wire yield strength is 65～90MPa, and percentage elongation is 35～45%.Soft attitude copper strap wire can select for use hot-pressed copper strap wire directly to use, or chooses by wire drawing machine and draw the copper strap wire of moulding through fully annealing again.3. prepare the finished product copper strap wire: this is the committed step in the inventive method, in this step, the present invention abandons the common tapering pulling wheel that has as shown in Figure 3, but this taper pulling wheel 14 automatic winding displacement in drawing process, but under external force, cause copper strap wire and pulling wheel tightly sturdy, copper strap wire certainly will produce camber when going out pulling wheel.Pulling wheel of the present invention adopts the flat wheel of equal diameter, has fundamentally stopped the camber that common wire drawing machine produced, but flat wheel can't automatic winding displacement, is head it off, specialized designs of the present invention have a wire-drawing frame of adjusting wheel.
Referring to Fig. 1, high-yield strength copper strap wire wire-drawing frame of the present invention, comprise pulling wheel 1, motor 5 and die holder 3 (top installation wire-drawing die) in the formation, the driven by motor pulling wheel rotates, motor is fixed on the base plate 4, die holder is positioned at the pulling wheel side, pulling wheel of the present invention is the flat wheel of equal diameter, for solving the winding displacement problem, set up and adjust wheel 13, adjust wheel and be arranged side by side with pulling wheel, according to the copper strap wire specification difference of being processed, adjusting wheel shaft and wire drawing wheel shaft has 3 °～8 ° angle excursion.
For reaching above-mentioned angle adjustment requirement, adjustment wheel wheel shaft pulling wheel wheel shaft is relatively done the low-angle deflection, the present invention adopts following structure to realize adjusting the deflection of wheel wheel shaft: referring to Fig. 1, Fig. 2, adjust wheel and be positioned at an end of adjusting wheel shaft 10, adjusting the wheel shaft middle part and the other end is supported by back shaft 11 and support 9 respectively, back shaft one end is provided with support set 11-1, support set forms between centers crack, hole with the adjusting wheel shaft and cooperates, the back shaft other end be positioned at axle bed 12, with the axle bed matched in clearance, axle bed and frame 6 are affixed.Described support one end also is to form between centers crack, hole to cooperate with regulating wheel shaft, and the support other end is fixed in the supporting plate 7 by two positioning bolts 8, and supporting plate and frame are fixed.Adjust two positioning bolts 8, can change and regulate the angle of wheel shaft with respect to the wire drawing wheel shaft, back shaft then plays point action to regulating wheel shaft.After between wire drawing wheel shaft and the adjusting wheel shaft angle of inclination having been arranged, after being wrapped in copper strap wire on pulling wheel and the regulating wheel, the lead of the angle official post operation between two-wheeled produces certain torsional moment, forces lead to be arranged to single direction, and the winding displacement problem is solved thereupon.Usually, lead on pulling wheel, twine 4～6 the circle get final product.
Below provide a specific embodiment, the preparation sectional dimension is that 2.5mm * 10.6mm, yield strength average are the copper strap wire of 230MPa.At first choosing the yield strength average is the soft attitude copper strap wire of 80MPa hot extrusion, the relation of reducing with yield strength according to soft attitude copper strap wire sectional dimension is calculated as follows: finished product copper strap wire yield strength average is 230MPa, finished product copper strap wire yield strength average has improved 230-80=150MPa than the yield strength average of soft attitude copper strap wire, long by the cross section, broadside respectively compresses the one percentage point yield strength can increase 50MPa calculating, conductor is long, broadside has respectively compressed three percentage points simultaneously, the technological requirement of the copper strap wire of so soft attitude is of a size of: broadside=2.5 * (1+3%)=2.575mm, long limit=10.6 * (1+3%)=10.918mm, promptly the technological requirement of the copper strap wire of soft attitude is of a size of 2.575mm * 10.918mm.According to the soft attitude copper strap wire that this value is chosen, can obtain sectional dimension after the wire-drawing frame drawing is the high-yield strength copper strap wire of 2.5 * 10.6mm, yield strength average 230MPa.The angle excursion of adjusting wheel shaft and wire drawing wheel shaft in the drawing step is 4 °-5 °.
Claims (4)
1. a high-yield strength copper strap wire preparation method is characterized in that, it adopts soft attitude copper strap wire to make raw material and forms through the wire drawing reinforcement, and its yield strength is 200～250Mpa, and carries out as follows:
A. determine soft attitude copper strap wire cross sectional dimensions: whenever reduce one percentage point, yield strength according to copper strap wire its cross section size dimension in wire drawing is handled and increase by the relation of 50～55Mpa, determine soft attitude copper strap wire cross sectional dimensions in conjunction with the sectional dimension of finished product high-yield strength copper strap wire;
B. choose soft attitude copper strap wire: the cross section size dimension of determining according to step a prepares soft attitude copper strap wire, and described soft attitude copper strap wire yield strength is 65～90MPa, and percentage elongation is 35～45%;
C. prepare the high-yield strength copper strap wire: above-mentioned soft attitude copper strap wire is drawn to required sectional dimension through wire-drawing frame, and the pulling wheel in the described wire-drawing frame adopts the flat wheel of equal diameter.
2. high-yield strength copper strap wire preparation method according to claim 1 is characterized in that: described soft attitude copper strap wire is taken from hot-pressed copper strap wire, or takes from behind the wire-drawing shape through the abundant copper strap wire of annealing again.
3. one kind prepares the wire-drawing frame of high-yield strength copper strap wire as claimed in claim 1 or 2, it is characterized in that, comprise pulling wheel, motor, die holder and adjustment wheel (13) in the formation, described driven by motor pulling wheel rotates, die holder is positioned at the pulling wheel side, described pulling wheel (1) is adjusted wheel (13) and is arranged side by side with pulling wheel for the flat wheel of equal diameter, and adjusting wheel shaft and wire drawing wheel shaft has 3 °～8 ° angle excursion.
4. according to the wire-drawing frame of the described preparation high-yield strength of claim 3 copper strap wire, it is characterized in that: described adjustment wheel is positioned at adjusts wheel shaft (10) one ends, adjusting the wheel shaft middle part and the other end is supported by back shaft (11) and support (9) respectively, described back shaft one end is provided with support set (11-1), support set and adjustment wheel shaft matched in clearance, the back shaft other end is positioned at axle bed (12), with the axle bed matched in clearance, axle bed and frame (6) are affixed, described support one end and adjustment wheel shaft matched in clearance, the support other end is fixed in the supporting plate (7) by two positioning bolts (8), and supporting plate and frame are fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101856870A CN101226793B (en) | 2007-12-28 | 2007-12-28 | Method for manufacturing high-yield strength cuprum flat wire and wire-drawing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101856870A CN101226793B (en) | 2007-12-28 | 2007-12-28 | Method for manufacturing high-yield strength cuprum flat wire and wire-drawing device |
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| CN101226793A CN101226793A (en) | 2008-07-23 |
| CN101226793B true CN101226793B (en) | 2010-06-02 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101947566A (en) * | 2010-06-02 | 2011-01-19 | 天津市银龙预应力钢材集团有限公司 | Automatic steel wire angle adjusting system for wire drawing machine |
| CN102280220B (en) * | 2011-08-01 | 2012-10-03 | 江苏句容联合铜材有限公司 | Process for manufacturing enameled bare copper flat wire |
| CN102810361B (en) * | 2012-08-20 | 2014-08-06 | 江苏南海线缆设备有限公司 | Wheel track adjustor for copper wire annealing device |
| CN103962409B (en) * | 2014-05-20 | 2016-06-08 | 王国华 | The manufacture method of a kind of copper cash |
| CN105215078B (en) * | 2015-10-23 | 2017-09-12 | 浙江三林五金制品有限公司 | A kind of copper wire roll unit |
| CN114472568B (en) * | 2022-02-08 | 2024-07-26 | 兰州威特焊材科技股份有限公司 | Method for eliminating internal stress non-uniformity of aluminum alloy welding wire |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1185057C (en) * | 2000-09-26 | 2005-01-19 | 江苏兴达钢帘线股份有限公司 | Metal wire working method and wire-drawing bench |
| CN1700363A (en) * | 2005-04-26 | 2005-11-23 | 句容市电磁线公司 | Process for making voltage transformer enamel-covered lenticular wires |
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2007
- 2007-12-28 CN CN2007101856870A patent/CN101226793B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1185057C (en) * | 2000-09-26 | 2005-01-19 | 江苏兴达钢帘线股份有限公司 | Metal wire working method and wire-drawing bench |
| CN1700363A (en) * | 2005-04-26 | 2005-11-23 | 句容市电磁线公司 | Process for making voltage transformer enamel-covered lenticular wires |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2007-283314A 2007.11.01 |
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Assignee: Baoding Tianwei Electric Power Wire Co.,Ltd. Assignor: Baoding Tianwei Group Co., Ltd. Contract record no.: 2011130000067 Denomination of invention: Method for manufacturing high-yield strength cuprum flat wire and wire-drawing device Granted publication date: 20100602 License type: Exclusive License Open date: 20080723 Record date: 20110610 |
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Owner name: BAODING TIANWEI BAOBIAN ELECTRIC CO., LTD. Free format text: FORMER OWNER: BAODING TIANWEI GROUP CO., LTD. Effective date: 20131127 |
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Free format text: CORRECT: ADDRESS; FROM: 071051 BAODING, HEBEI PROVINCE TO: 071056 BAODING, HEBEI PROVINCE |
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Effective date of registration: 20131127 Address after: 071056 West Road, Hebei, Baoding, No. 2222, No. Patentee after: Baoding Tianwei Baobian Electric Co., Ltd. Address before: 071051 Jin Di garden complex building, 128 chemical fiber road north, Baoding, Hebei Patentee before: Baoding Tianwei Group Co., Ltd. |