CN220526601U - High-adhesiveness enameled aluminum round wire - Google Patents
High-adhesiveness enameled aluminum round wire Download PDFInfo
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- CN220526601U CN220526601U CN202223352790.9U CN202223352790U CN220526601U CN 220526601 U CN220526601 U CN 220526601U CN 202223352790 U CN202223352790 U CN 202223352790U CN 220526601 U CN220526601 U CN 220526601U
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- aluminum
- insulating paint
- polyester
- wire
- layer
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 89
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 239000003973 paint Substances 0.000 claims abstract description 108
- 239000004020 conductor Substances 0.000 claims abstract description 33
- 239000004962 Polyamide-imide Substances 0.000 claims description 40
- 229920002312 polyamide-imide Polymers 0.000 claims description 40
- 239000011248 coating agent Substances 0.000 claims description 26
- 238000000576 coating method Methods 0.000 claims description 26
- 229920000728 polyester Polymers 0.000 claims description 25
- 229920003055 poly(ester-imide) Polymers 0.000 claims description 22
- 239000002966 varnish Substances 0.000 claims description 18
- 150000002466 imines Chemical class 0.000 claims description 4
- 230000001464 adherent effect Effects 0.000 claims 2
- 238000012797 qualification Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 19
- 238000001816 cooling Methods 0.000 description 8
- 230000006872 improvement Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000000137 annealing Methods 0.000 description 6
- 238000004804 winding Methods 0.000 description 6
- 238000005491 wire drawing Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007591 painting process Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
Abstract
The enameled aluminum round wire with high adhesiveness comprises an aluminum conductor and a plurality of paint films, wherein the aluminum conductor is an aluminum round wire, the paint films are sequentially adsorbed on the surface of the aluminum conductor, and the paint films are four layers. According to the high-adhesion enameled aluminum round wire, the stripping, twisting and flexibility performances of the enameled aluminum round wire are greatly improved, and the use qualification rate of downstream customers is improved.
Description
Technical Field
The utility model relates to the technical field of enameled wires, in particular to a high-adhesiveness enameled round aluminum wire.
Background
Along with the violent rise of the price of copper, the cost proportion of the enamelled copper round wire in the downstream application field is gradually increased, and the step of 'aluminum-substituted copper' is quickened. The enameled aluminum round wire is widely used in the fields of reactors, inductors, motors and the like, and the specification range is wide.
The adhesion was poor according to the EI/AIW/A enameled round aluminum wire products in the test industry. Characterization data, which are characterized by peel twist, flexibility (20% elongation of the enameled round aluminum wire, cracking of the paint film on a defined round bar wrap), are not acceptable. Under the same winding equipment, the adhesiveness of the enameled round aluminum wire is reduced, the combination degree of aluminum and a paint film is directly reduced, and the service life is shortened.
The enameled aluminum round wire consists of an aluminum conductor and insulating paint, and the EI/AIW/A enameled aluminum round wire insulating paint consists of 200-grade or 220-grade insulating paint. The windability was carried out according to test method 8 in GB/T4074.3 by tightly winding a relatively straight sample 10 times on a polished round rod having a diameter corresponding to the outer diameter of the sample. The round bar should be wound at a speed of 1r/s-3r/s, and the sample should be prevented from being twisted during winding.
Test method 5.4 in the peel and twist test GB/T4074.3: one test was placed on a peel and twist tester with the two clamps on the same axis and 500mm apart, one of which was rotatable and the other was not, but was axially movable and loaded to apply tension (weight depending on gauge size) to twist the test specimen. Paint films on both sides of the test specimen were scraped off axially using a doctor blade until the conductor was leaked. The doctor blade pressure should be sufficient to scrape off the paint film and leave a clean and smooth surface at the paint film and conductor interface, but not so much material. The starting speed of the rotating device should be 60R/min to 100R/min until the rotational speed R specified by the relevant product standard is reached.
Because the aluminum conductor is easy to form an oxide film, the general insulating paint is difficult to adhere to the aluminum conductor, and a high-adhesiveness is needed first, so that the appearance of the enameled aluminum round wire with stripping, twisting and flexibility performance is improved.
Disclosure of Invention
In order to overcome the defects of poor adhesive force, peeling and twisting of the enameled aluminum round wire and low flexibility of the insulating paint in the prior art, the utility model aims to invent the enameled aluminum round wire with high adhesiveness and improving the peeling and twisting of the enameled aluminum round wire and the flexibility.
The technical scheme adopted for solving the technical problems is as follows: the enameled aluminum round wire with high adhesiveness comprises an aluminum conductor and a plurality of paint films, wherein the aluminum conductor is an aluminum round wire, the paint films are sequentially adsorbed on the surface of the aluminum conductor, and the paint films are four layers.
As a further improvement of the utility model: the aluminum round wire comprises a polyester insulating paint layer, wherein the polyester insulating paint layer is adsorbed on the surface of the aluminum round wire.
As a further improvement of the utility model: the polyester-imide insulating varnish layer comprises a polyester-imide insulating varnish layer, and the polyester-imide insulating varnish layer is adsorbed on the surface of the polyester-imide insulating varnish layer.
As a further improvement of the utility model: the paint comprises a polyamide-imide insulating paint layer, wherein the polyamide-imide insulating paint layer is adsorbed on the surface of the polyester-imide insulating paint layer.
As a further improvement of the utility model: the self-lubricating polyamide-imide insulating paint layer is adsorbed on the surface of the polyamide-imide insulating paint layer.
As a further improvement of the utility model: the aluminum round wire is phi 2.6 mm.
As a further improvement of the utility model: the thickness of the polyester insulating paint layer is 3-5um, and the coating proportion of the polyester insulating paint layer is less than 1%.
As a further improvement of the utility model: the coating proportion of the polyester imine insulating paint layer is 50% -60%.
As a further improvement of the utility model: the coating proportion of the polyamide imide insulating paint layer is 30% -40%.
Compared with the prior art, the utility model has the beneficial effects that: the high-adhesion enameled round aluminum wire is produced by the high-adhesion enameled round aluminum wire, so that the stripping, twisting and flexibility performances of the enameled round aluminum wire are greatly improved, and the use qualification rate of downstream customers is improved.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
FIG. 2 is a schematic cross-sectional view of the present utility model.
Wherein, 1-aluminum conductor; 2-polyester insulating paint layer; 3-polyester imine insulating paint layer; 4-polyamideimide insulating varnish layer; 5-self-lubricating polyamide-imide insulating varnish layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to specific embodiments of the present utility model and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The following description is further made with reference to the accompanying drawings and examples: referring to fig. 1 and 2, a high-adhesion enameled aluminum round wire comprises an aluminum conductor 1 and a plurality of layers of paint films, wherein the aluminum conductor 1 is an aluminum round wire, the plurality of layers of paint films are sequentially adsorbed on the surface of the aluminum conductor 1, and the paint films are four layers.
The aluminum round wire comprises a polyester insulating paint layer 2, wherein the polyester insulating paint layer 2 is adsorbed on the surface of the aluminum round wire.
The paint comprises a polyester-imide insulating paint layer 3, wherein the polyester-imide insulating paint layer 3 is adsorbed on the surface of the polyester-imide insulating paint layer 2.
Comprises a polyamide-imide insulating paint layer 4, wherein the polyamide-imide insulating paint layer 4 is adsorbed on the surface of the polyester-imide insulating paint layer 3.
The self-lubricating polyamide-imide insulating paint layer 5 is adsorbed on the surface of the polyamide-imide insulating paint layer 4.
The aluminum round wire is phi 2.6 mm.
The thickness of the polyester insulating paint layer 2 is 3-5um, and the coating proportion of the polyester insulating paint layer 2 is less than 1%.
The coating proportion of the polyester imine insulating paint layer 3 is 50% -60%.
The coating proportion of the polyamide-imide insulating paint layer 4 is 30% -40%.
The thickness of the self-lubricating polyamide-imide insulating paint layer 5 is 3-5um, and the coating proportion of the self-lubricating polyamide-imide insulating paint layer 5 is less than 1%.
The working principle of the utility model is as follows: the high-adhesion enameled aluminum round wire comprises an aluminum conductor 1, a polyester insulating layer 2, a polyester imide insulating layer 3, a polyamide imide insulating layer 4 and a self-lubricating polyamide imide insulating layer 5.
The aluminum conductor is extremely liable to form an oxide film, so that it is difficult for general insulating paint to adhere to the aluminum conductor 1. The polyester insulating paint 2 has excellent adhesiveness, and can be better contacted with an aluminum conductor as a primer layer to be cured to form a paint film. The polyester-imide insulating layer 3 has the advantages of good heat shock resistance, high softening breakdown temperature resistance and the like, and can improve the temperature resistance level of the product. The polyamide-imide insulating layer 4 not only has high heat resistance, but also has chemical resistance and electrical property, and enhances the wear resistance and scratch resistance of the enameled wire and improves the sliding property, so that the mechanical properties of the enameled wire such as wear resistance, scratch resistance and the like are obviously improved. The self-lubricating polyamide-imide insulating layer 5 is prepared by adding a proper amount of slidability material into insulating paint for modification, and then coating the insulating paint on the outermost layer of the enameled wire, so that the enameled wire has good self-lubricating property. The self-lubricating polyamide-imide insulating paint layer 5 is basically consistent with the polyamide-imide insulating paint layer, so that the self-lubricating polyamide-imide insulating paint layer can be widely applied to a refrigerating system of a refrigerator or an air-conditioner compressor, can overcome capillary blocking phenomenon of the refrigerating system caused by the trial paraffin lubricant, and can meet the current high-speed winding process requirement.
Embodiment case one:
the method designs the high-adhesion enameled aluminum round wire, and improves the paint film adhesion of the EI/AIW/A enameled aluminum round wire. The embodiments are as follows:
1. wire drawing process, equipment: wire drawing machine
Drawing an aluminum rod with the diameter of 9.0mm into an aluminum round wire with the diameter of 2.6mm by a large drawing machine, and annealing in an on-line voltage annealing mode (recommended annealing voltage is 30+/-5V) at the same time, wherein the obtained aluminum round wire with the diameter of 2.60mm is a soft aluminum round bare wire;
2. painting process, equipment: enamelling machine
Step one: and (3) feeding the phi 2.60mm flexible wire into a drawing machine through a paying-off device, and drawing by a drawing die in the drawing machine to obtain the required wire diameter of the enameled wire conductor, namely the aluminum conductor 1. Lubrication and protection during wire drawing are noted, and the aluminum conductor 1 is guaranteed to be free of scratch and burr after the wire-outgoing die.
Step three: the aluminum conductor 1 enters a hearth after being scrubbed by felt, cleaned by ultrasonic waves and dried, polyester insulating paint, polyester imide insulating paint, polyamide imide insulating paint and self-lubricating polyamide imide insulating paint are sequentially coated on the aluminum conductor 1, and a polyester insulating paint layer 2, a polyester imide insulating paint layer 3, a polyamide imide insulating paint layer 4 and a self-lubricating polyamide imide insulating paint layer 5 are sequentially formed and sequentially coated on the aluminum conductor 1 in an adsorption mode.
After each coating of insulating paint, baking in a hearth to solidify the insulating paint from liquid state into a paint film. Then cooling the insulating paint in a cooling fan, and baking and solidifying the insulating paint after cooling. The procedure is a bake-chill cycle until all the coating of the insulating varnish is completed.
The polyester insulating paint layer 2 has excellent adhesiveness compared with other three paints, the coating thickness is 3-5um, and the coating proportion is less than 1%. The coating proportion of the polyester imide insulating varnish layer 3 and the polyamide imide insulating varnish layer 4 is 60 percent and 30 percent respectively in order to meet the downstream use environment (high temperature resistance, chemical resistance, refrigerant resistance and the like). The self-lubricating polyamide-imide insulating varnish 5 coated on the outermost layer plays a role in lubrication, a paint film is prevented from being damaged in the downstream winding process, the coating thickness is 3-5 mu m, and the coating proportion is less than 1%.
Step five: and (5) feeding and taking-up the coated enameled wire, and detecting the enameled wire in a lower line. And cooling and detecting the baked wire body on line.
EI/AIW/A (H) 220 was prepared according to the method, and the detection data for 1.05mm product is shown in Table 1 below:
TABLE 1
The adhesion (stripping twisting and flexibility) of the enameled round aluminum wire produced by the method is greatly improved compared with the adhesion and slidability of the prior product structure, and is higher than the national standard GB23312.1.
Implementation case two:
the method designs the high-adhesion enameled aluminum round wire, and improves the paint film adhesion of the EI/AIW/A enameled aluminum round wire. The embodiments are as follows:
1. wire drawing process, equipment: wire drawing machine
Drawing an aluminum rod with the diameter of 9.0mm into an aluminum round wire with the diameter of 2.6mm by a large drawing machine, and annealing in an on-line voltage annealing mode (recommended annealing voltage is 30+/-5V) at the same time, wherein the obtained aluminum round wire with the diameter of 2.60mm is a soft aluminum round bare wire;
2. painting process, equipment: enamelling machine
Step one: and (3) feeding the phi 2.60mm flexible wire into a drawing machine through a paying-off device, and drawing by a drawing die in the drawing machine to obtain the required wire diameter of the enameled wire conductor, namely the aluminum conductor 1. Lubrication and protection during wire drawing are noted, and the aluminum conductor 1 is guaranteed to be free of scratch and burr after the wire-outgoing die.
Step three: the aluminum conductor 1 enters a hearth after being scrubbed by felt, cleaned by ultrasonic waves and dried, polyester insulating paint, polyester imide insulating paint, polyamide imide insulating paint and self-lubricating polyamide imide insulating paint are sequentially coated on the aluminum conductor 1, and a polyester insulating paint layer 2, a polyester imide insulating paint layer 3, a polyamide imide insulating paint layer 4 and a self-lubricating polyamide imide insulating paint layer 5 are sequentially formed and sequentially coated on the aluminum conductor 1 in an adsorption mode.
After each coating of insulating paint, baking in a hearth to solidify the insulating paint from liquid state into a paint film. Then cooling the insulating paint in a cooling fan, and baking and solidifying the insulating paint after cooling. The procedure is a bake-chill cycle until all the coating of the insulating varnish is completed.
The polyester insulating paint layer 2 has excellent adhesiveness compared with other three paints, the coating thickness is 3-5um, and the coating proportion is less than 1%. The coating proportion of the polyester imide insulating varnish layer 3 and the polyamide imide insulating varnish layer 4 is 50% and 40% respectively in order to meet the downstream use environment (high temperature resistance, chemical resistance, refrigerant resistance and the like). The self-lubricating polyamide-imide insulating varnish 5 coated on the outermost layer plays a role in lubrication, a paint film is prevented from being damaged in the downstream winding process, the coating thickness is 3-5 mu m, and the coating proportion is less than 1%.
Step five: and (5) feeding and taking-up the coated enameled wire, and detecting the enameled wire in a lower line. And cooling and detecting the baked wire body on line.
EI/AIW/A (H) 220 was prepared according to the method, and the detection data for 1.05mm products are shown in Table 2 below:
TABLE 2
The adhesion (stripping twisting and flexibility) of the enameled round aluminum wire produced by the method is greatly improved compared with the adhesion and slidability of the prior product structure, and is higher than the national standard GB23312.1.
The main functions of the utility model are as follows: the enameled aluminum round wire with high adhesiveness greatly improves the stripping, twisting and flexibility performances of the enameled aluminum round wire and improves the use qualification rate of downstream customers.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
In view of the above, after reading the document, those skilled in the art can make various other corresponding transformation schemes without creative mental efforts according to the technical scheme and the technical conception of the present utility model, which are all within the scope of the present utility model.
Claims (9)
1. The utility model provides a high-adhesion enameled aluminum round wire which characterized in that: the aluminum conductor is an aluminum round wire, the plurality of paint films are sequentially adsorbed on the surface of the aluminum conductor, the paint films are four layers and comprise polyester insulating paint layers, and the polyester insulating paint layers are adsorbed on the surface of the aluminum round wire.
2. A high adhesion enameled round aluminum wire according to claim 1 wherein: the polyester-imide insulating varnish layer comprises a polyester-imide insulating varnish layer, and the polyester-imide insulating varnish layer is adsorbed on the surface of the polyester-imide insulating varnish layer.
3. A high adhesion enameled round aluminum wire according to claim 2 wherein: the paint comprises a polyamide-imide insulating paint layer, wherein the polyamide-imide insulating paint layer is adsorbed on the surface of the polyester-imide insulating paint layer.
4. A highly adherent aluminum wire as claimed in claim 3, wherein: the self-lubricating polyamide-imide insulating paint layer is adsorbed on the surface of the polyamide-imide insulating paint layer.
5. A high adhesion enameled round aluminum wire according to claim 1 wherein: the aluminum round wire is phi 2.6 mm.
6. A high adhesion enameled round aluminum wire according to claim 1 wherein: the thickness of the polyester insulating paint layer is 3-5um, and the coating proportion of the polyester insulating paint layer is less than 1%.
7. A high adhesion enameled round aluminum wire according to claim 2 wherein: the coating proportion of the polyester imine insulating paint layer is 50% -60%.
8. A highly adherent aluminum wire as claimed in claim 3, wherein: the coating proportion of the polyamide imide insulating paint layer is 30% -40%.
9. A high adhesion enameled round aluminum wire according to claim 4 wherein: the thickness of the self-lubricating polyamide-imide insulating paint layer is 3-5um, and the coating proportion of the self-lubricating polyamide-imide insulating paint layer is less than 1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223352790.9U CN220526601U (en) | 2022-12-13 | 2022-12-13 | High-adhesiveness enameled aluminum round wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223352790.9U CN220526601U (en) | 2022-12-13 | 2022-12-13 | High-adhesiveness enameled aluminum round wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220526601U true CN220526601U (en) | 2024-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223352790.9U Active CN220526601U (en) | 2022-12-13 | 2022-12-13 | High-adhesiveness enameled aluminum round wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220526601U (en) |
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- 2022-12-13 CN CN202223352790.9U patent/CN220526601U/en active Active
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