CN108015119B - Flat copper wire forming processing method - Google Patents
Flat copper wire forming processing method Download PDFInfo
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- CN108015119B CN108015119B CN201610936214.9A CN201610936214A CN108015119B CN 108015119 B CN108015119 B CN 108015119B CN 201610936214 A CN201610936214 A CN 201610936214A CN 108015119 B CN108015119 B CN 108015119B
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- Prior art keywords
- copper wire
- heating
- wire
- copper
- flat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
- B21C37/042—Manufacture of coated wire or bars
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
Abstract
The invention discloses a flat copper wire forming processing method, which comprises the following steps: step 1: selecting an oxygen-free round copper wire with a clean surface, wherein the mass of copper in the copper wire is 99.9% of the total mass of the oxygen-free round copper wire; step 2: carrying out primary drawing operation on the oxygen-free round copper wire through heating wire drawing equipment and a drawing forming die; and step 3: adding cleaning fluid into the cleaning tank, heating, and putting the copper wire subjected to the primary drawing operation in the step 2 into the cleaning tank for cleaning; and 4, step 4: forming water mist after the water is subjected to sound wave atomization, and spraying the water mist on the surface of the copper wire finished in the step (3) for cooling; and 5: and (4) carrying out secondary drawing operation on the copper wire cooled in the step (4) through heating wire drawing equipment and a drawing forming die. In the technical scheme of this application, carry out twice drawing operation with the copper line, reduce the phenomenon that the stress concentration of drawing operation back copper line takes place elastic recovery at every turn, prevent because the uneven condition of copper line surface size that once drawing shaping leads to takes place.
Description
Technical Field
The invention relates to a flat copper wire forming processing method, and belongs to the field of metal processing.
Background
With the continuous development of miniaturization and miniaturization of mechanical and electronic equipment, flat copper wires with excellent performance, current carrying capacity, high transmission speed, good heat dissipation and low price are gradually widely applied. The existing flat copper wire processing technology generally adopts the technical scheme that a round copper wire is formed by two flattening operations of a flattening machine or a copper blank is formed by one-time stretching. The copper wire needs to be heated and welded in the middle process of the two-time flattening operation forming, and the connection strength of the copper wire is difficult to guarantee in the welding process. Because the internal stress of the copper billet is complex, the elastic recovery of the flat copper wire formed by one-time stretching after stretching causes the uneven size of the finished copper wire product.
Disclosure of Invention
The flat copper wire processing technology in the prior art generally adopts the steps of carrying out two-time flattening operation molding on a round copper wire through a flattening machine or carrying out one-time stretching molding on a copper blank. The copper wire needs to be heated and welded in the middle process of the two-time flattening operation forming, and the connection strength of the copper wire is difficult to guarantee in the welding process. The inner stress of the copper billet is complex, and the elastic recovery of the flat copper wire subjected to one-step stretch forming after stretching causes the uneven size of the finished copper wire product, so that the flat copper wire forming processing method is provided.
The invention adopts the technical scheme that the flat copper wire forming processing method comprises the following steps:
step 1: selecting an oxygen-free round copper wire with a clean surface, wherein the mass of copper in the copper wire is 99.9% of the total mass of the oxygen-free round copper wire;
step 2: carrying out primary drawing operation on the oxygen-free round copper wire through heating wire drawing equipment and a drawing forming die;
and step 3: adding cleaning fluid into the cleaning tank, heating, and putting the copper wire subjected to the primary drawing operation in the step 2 into the cleaning tank for cleaning;
and 4, step 4: forming water mist after the water is subjected to sound wave atomization, and spraying the water mist on the surface of the copper wire finished in the step (3) for cooling;
and 5: carrying out secondary drawing operation on the copper wire cooled in the step 4 through heating wire drawing equipment and a drawing forming die;
in the technical scheme of this application, carry out twice drawing operation with the copper line, reduce the phenomenon that the stress concentration of drawing operation back copper line takes place elastic recovery at every turn, prevent because the uneven condition of copper line surface size that once drawing shaping leads to takes place.
Step 6: heating and shaping the copper wire finished in the step 5 through a baking oven;
and 7: before the copper wire finished in the step 5 passes through the oven, the copper wire passes through a paint dipping tank filled with insulating paint;
drying and forming enable the copper wire to stabilize the internal stress inside the copper wire in the heating process, and further prevent the situation that the surface size of the copper wire is uneven. And the paint dipping operation of the insulating paint is carried out before drying, so that the drying and forming and the molecular stabilization of the insulating paint are carried out simultaneously, the processing procedures are reduced, and the working efficiency is improved.
And 8: wrapping the surface of the copper wire finished in the step 7 by using a fiber tape;
and step 9: performing extrusion operation on the copper wire finished in the step 8 by using rubber;
the heating temperature of the heating wire drawing device in the step 5 is lower than that of the heating wire drawing device in the step 2.
Preferably, in the step 7 of the method for forming and processing the flat copper wire, the speed of the copper wire passing through the paint dipping tank filled with the polyimide insulating paint is 3-8 m/min.
The speed of the copper wire passing through the paint dipping tank filled with the polyimide insulating paint is controlled to be 3-8 m/min, which is not suitable for being too fast, so as to prevent the condition of uneven paint hanging.
Preferably, in the method for forming and processing the flat copper wire, the insulating paint is polyimide insulating paint.
Preferably, in the method for forming and processing a flat copper wire, the external dimension of the copper wire after the primary drawing operation in the step 2 is 1.15 times that of the copper wire after the secondary drawing operation in the step 5.
Preferably, in the method for forming and processing the flat copper wire, the heating temperature of the baking furnace is 200-350 ℃.
Preferably, in the method for forming and processing the flat copper wire, the copper wire processed in the step 6 is cooled by cooling air.
The refrigeration and cooling of the cold air can avoid the molecular weight of the insulating paint from becoming large at normal temperature, and prevent the overlarge molecular conductor copper wire from being difficult to paint.
Preferably, in the method for forming and processing the flat copper wire, the temperature for cooling by cold air is 10 ℃.
Preferably, in the method for forming and processing the flat copper wire, before the copper wire formed in the step 5 passes through a paint dipping tank filled with insulating paint, a steel wire brush is used for roughening the surface of the copper wire processed in the step 2.
Preferably, in the method for forming and processing the flat copper wire, the heating temperature of the heating and drawing device in the step 5 is 200-350 ℃, and the heating temperature of the heating and drawing device in the step 2 is 300-420 ℃.
The surface smoothness of the cleaned copper wire is high, and the insulating paint is difficult to adhere. The copper wire after the roughening operation has high surface roughness and is easy to adhere to insulating paint. The invention has the advantages that the defects in the prior art can be overcome, and the structural design is reasonable and novel. In the technical scheme of this application, carry out twice drawing operation with the copper line, reduce the phenomenon that the stress concentration of drawing operation back copper line takes place elastic recovery at every turn, prevent because the uneven condition of copper line surface size that once drawing shaping leads to takes place.
Detailed Description
Example 1
The invention relates to a flat copper wire forming processing method, which comprises the following steps:
step 1: selecting an oxygen-free round copper wire with a clean surface, wherein the mass of copper in the copper wire is 99.9% of the total mass of the oxygen-free round copper wire;
step 2: carrying out primary drawing operation on the oxygen-free round copper wire through heating wire drawing equipment and a drawing forming die;
and step 3: adding cleaning fluid into the cleaning tank, heating, and putting the copper wire subjected to the primary drawing operation in the step 2 into the cleaning tank for cleaning;
and 4, step 4: forming water mist after the water is subjected to sound wave atomization, and spraying the water mist on the surface of the copper wire finished in the step (3) for cooling;
and 5: carrying out secondary drawing operation on the copper wire cooled in the step 4 through heating wire drawing equipment and a drawing forming die;
in the technical scheme of this application, carry out twice drawing operation with the copper line, reduce the phenomenon that the stress concentration of drawing operation back copper line takes place elastic recovery at every turn, prevent because the uneven condition of copper line surface size that once drawing shaping leads to takes place.
Step 6: heating and shaping the copper wire finished in the step 5 through a baking oven;
and 7: before the copper wire finished in the step 5 passes through the oven, the copper wire passes through a paint dipping tank filled with insulating paint;
and 8: wrapping the surface of the copper wire finished in the step 7 by using a fiber tape;
and step 9: performing extrusion operation on the copper wire finished in the step 8 by using rubber;
the heating temperature of the heating wire drawing device in the step 5 is lower than that of the heating wire drawing device in the step 2.
In step 7, the speed of the copper wire passing through the paint dipping tank filled with the polyimide insulating paint is 3 m/min.
The insulating paint is polyimide insulating paint. The external dimension of the copper wire after the primary drawing operation in the step 2 is 1.15 times that of the copper wire after the secondary drawing operation in the step 5. The heating temperature of the oven is 200 ℃. And 6, cooling the copper wire processed by the oven by cold air. The temperature of the cold air for refrigeration and temperature reduction is 10 ℃. And (3) before the copper wire formed in the step (5) passes through a paint dipping tank filled with insulating paint, roughening the surface of the copper wire processed in the step (2) by using a steel wire brush. The heating temperature of the heating and wire-drawing equipment in the step 5 is 200 ℃, and the heating temperature of the heating and wire-drawing equipment in the step 2 is 300 ℃.
Example 2
This example differs from example 1 in that:
in step 7, the speed of the copper wire passing through the paint dipping tank filled with the polyimide insulating paint is 8 m/min. The heating temperature of the oven is 350 ℃. The heating temperature of the heating wire-drawing equipment in the step 5 is 350 ℃, and the heating temperature of the heating wire-drawing equipment in the step 2 is 420 ℃.
Example 3
This example differs from examples 1 and 2 in that:
in step 7, the speed of the copper wire passing through the paint dipping tank filled with the polyimide insulating paint is 6 meters per minute. The heating temperature of the oven is 240 ℃. The heating temperature of the heating wire-drawing equipment in the step 5 is 280 ℃, and the heating temperature of the heating wire-drawing equipment in the step 2 is 350 ℃.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should understand that they can make various changes, modifications, additions and substitutions within the spirit and scope of the present invention.
Claims (9)
1. A flat copper wire forming processing method is characterized in that: the method comprises the following steps:
step 1: selecting an oxygen-free round copper wire with a clean surface, wherein the mass of copper in the copper wire is 99.9% of the total mass of the oxygen-free round copper wire;
step 2: carrying out primary drawing operation on the oxygen-free round copper wire through heating wire drawing equipment and a drawing forming die;
and step 3: adding cleaning fluid into the cleaning tank, heating, and putting the copper wire subjected to the primary drawing operation in the step 2 into the cleaning tank for cleaning;
and 4, step 4: forming water mist after the water is subjected to sound wave atomization, and spraying the water mist on the surface of the copper wire finished in the step (3) for cooling;
and 5: carrying out secondary drawing operation on the copper wire cooled in the step 4 through heating wire drawing equipment and a drawing forming die;
step 6: heating and shaping the copper wire finished in the step 5 through a baking oven;
and 7: before the copper wire finished in the step 5 passes through the oven, the copper wire passes through a paint dipping tank filled with insulating paint;
and 8: wrapping the surface of the copper wire finished in the step 7 by using a fiber tape;
and step 9: performing extrusion operation on the copper wire finished in the step 8 by using rubber;
the heating temperature of the heating wire drawing device in the step 5 is lower than that of the heating wire drawing device in the step 2.
2. The flat copper wire forming method according to claim 1, characterized in that: in the step 7, the speed of the copper wire passing through the paint dipping tank filled with the polyimide insulating paint is 3-8 m/min.
3. The flat copper wire forming method according to claim 1, characterized in that: the insulating paint is polyimide insulating paint.
4. The flat copper wire forming method according to claim 1, characterized in that: and the external dimension of the copper wire after the primary drawing operation in the step 2 is 1.15 times that of the copper wire after the secondary drawing operation in the step 5.
5. The flat copper wire forming method according to claim 1, characterized in that: the heating temperature of the drying furnace is 200-350 ℃.
6. The flat copper wire forming method according to claim 1, characterized in that: and 6, cooling the copper wire processed by the baking oven by cold air.
7. The flat copper wire forming method according to claim 6, characterized in that: the temperature of the cold air refrigeration cooling is 10 ℃.
8. The flat copper wire forming method according to claim 1, characterized in that: and (3) before the copper wire formed in the step (5) passes through a paint dipping tank filled with insulating paint, roughening the surface of the copper wire processed in the step (2) by using a steel wire brush.
9. The flat copper wire forming method according to claim 1, characterized in that: the heating temperature of the heating and drawing equipment in the step 5 is 200-350 ℃, and the heating temperature of the heating and drawing equipment in the step 2 is 300-420 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610936214.9A CN108015119B (en) | 2016-11-01 | 2016-11-01 | Flat copper wire forming processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610936214.9A CN108015119B (en) | 2016-11-01 | 2016-11-01 | Flat copper wire forming processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108015119A CN108015119A (en) | 2018-05-11 |
| CN108015119B true CN108015119B (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610936214.9A Expired - Fee Related CN108015119B (en) | 2016-11-01 | 2016-11-01 | Flat copper wire forming processing method |
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| CN (1) | CN108015119B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101582309A (en) * | 2008-05-12 | 2009-11-18 | 卢之云 | Processing process of enameled flat aluminium wire |
| CN102280220A (en) * | 2011-08-01 | 2011-12-14 | 江苏句容联合铜材有限公司 | Process for manufacturing enameled bare copper flat wire |
| DE202011108573U1 (en) * | 2011-12-02 | 2012-01-16 | Elektrisola Feindraht Ag | Wire for conducting an electric current |
| CN102903457A (en) * | 2012-05-04 | 2013-01-30 | 株洲时代电气绝缘有限责任公司 | Glass fiber copper clad strap wire and anufacturing method of glass fiber copper clad strap wire |
| CN104112550A (en) * | 2013-08-17 | 2014-10-22 | 赣州三进特种漆包线有限公司 | Manufacturing method for aluminum copper alloy enameled wire |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004113584A1 (en) * | 2002-12-23 | 2004-12-29 | Pirelli Pneumatici S.P.A. | Method dor producing coated metal wire |
| CN204792205U (en) * | 2015-08-20 | 2015-11-18 | 浙江长城电工科技股份有限公司 | Full automatic processing system of dysmorphism enameled wire |
| CN105070411B (en) * | 2015-08-20 | 2017-03-22 | 浙江长城电工科技股份有限公司 | System for full automatic processing process for profiled enamel wire |
-
2016
- 2016-11-01 CN CN201610936214.9A patent/CN108015119B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101582309A (en) * | 2008-05-12 | 2009-11-18 | 卢之云 | Processing process of enameled flat aluminium wire |
| CN102280220A (en) * | 2011-08-01 | 2011-12-14 | 江苏句容联合铜材有限公司 | Process for manufacturing enameled bare copper flat wire |
| DE202011108573U1 (en) * | 2011-12-02 | 2012-01-16 | Elektrisola Feindraht Ag | Wire for conducting an electric current |
| CN102903457A (en) * | 2012-05-04 | 2013-01-30 | 株洲时代电气绝缘有限责任公司 | Glass fiber copper clad strap wire and anufacturing method of glass fiber copper clad strap wire |
| CN104112550A (en) * | 2013-08-17 | 2014-10-22 | 赣州三进特种漆包线有限公司 | Manufacturing method for aluminum copper alloy enameled wire |
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| CN108015119A (en) | 2018-05-11 |
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Granted publication date: 20200522 Termination date: 20201101 |