CN114725699A - Processing equipment and processing technology of copper-aluminum adapter fitting - Google Patents
Processing equipment and processing technology of copper-aluminum adapter fitting Download PDFInfo
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- CN114725699A CN114725699A CN202210437034.1A CN202210437034A CN114725699A CN 114725699 A CN114725699 A CN 114725699A CN 202210437034 A CN202210437034 A CN 202210437034A CN 114725699 A CN114725699 A CN 114725699A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
- H01R4/625—Soldered or welded connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/06—Riveted connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/26—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for engaging or disengaging the two parts of a coupling device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Abstract
The invention provides a copper-aluminum switching hardware fitting processing device and a processing technology, based on the processing device, a wiring aluminum column is formed inside a wiring copper pipe through a copper-aluminum continuous casting forming technology, a copper-aluminum composite layer is formed at a copper-aluminum contact interface, the copper-aluminum switching hardware fitting can be applied to copper-aluminum cable switching of a photovoltaic connecting system and copper-aluminum switching in a connector, the contact surfaces of copper and aluminum can be effectively prevented from being broken, when the whole body is slightly bent by external force, a good electric connection effect can still be ensured, and the use reliability is high; in addition, the copper core cable and the aluminum core cable at the two ends are fixedly connected in an inserting manner, so that the installation is convenient and firm, and the service life is long; the method is beneficial to replacing copper with aluminum in photovoltaic system connection or other large-current application occasions, saves the consumption of copper resources and reduces the cost.
Description
Technical Field
The invention relates to the technical field of photovoltaic system electric connection, in particular to a processing device and a processing technology of a copper-aluminum adapter fitting applicable to cable connection and electric connectors of a photovoltaic power generation system.
Background
With the popularization of energy conservation and emission reduction, renewable energy sources are more and more widely applied. Among renewable energy sources, solar energy is particularly valued by people due to its cleanliness and convenience of acquisition, and therefore, solar power stations are produced at the same time. The solar power station is characterized in that photovoltaic modules are connected in series and in parallel to form a photovoltaic array, electric energy generated by the photovoltaic modules under the action of photovoltaic is converged into an inverter or a controller through cables, connectors and the like, the electric energy in the form is converted into electric energy convenient for users through the inverter or the controller, and the electric energy is connected to the grid or is directly sent to the users for use.
When a photovoltaic system is constructed, a large number of cables and electric connectors need to be consumed, and copper has the characteristics of good ductility, high heat conductivity and high electric conductivity, so that the cables in the existing photovoltaic system are basically made of copper cables. The copper content in the earth crust is only about 0.01%, the price of the copper cable is expensive, the use cost is high, and the problem of resource shortage can be met with the continuous increase of the copper consumption. And the density of aluminium is less than copper, but the low price, the resource is abundant, under the condition that satisfies same current-carrying requirement, the cost of aluminium core cable only needs about one third of copper core cable, consequently in order to reduce cost under many circumstances, lighten product weight, can replace the copper core cable with aluminium core cable, but in photovoltaic system, photovoltaic module's for the terminal box cable be the copper core cable, because the direct connection can take place electrochemical corrosion between copper and the aluminium, consequently copper core cable and aluminium core cable need switching device when connecting.
Present copper aluminium switching device is mostly one side copper connection structure, one side aluminium matter connection structure, link together through welding methods such as friction welding or brazing between copper connection structure and the aluminium matter connection structure, connect the copper core of copper core cable on copper connection structure, connect the aluminium core of aluminium core cable on aluminium matter connection structure, but because the coefficient of thermal expansion difference of copper and aluminium, the copper aluminium switching structure of this structure is easy to be in the fracture of connecting face department, consequently need a more reliable copper aluminium wire switching gold utensil. As shown in fig. 1, the applicant of the present patent proposed a highly reliable cu-al connection conversion fitting in the previously filed patent application (application number: CN 2021229574813), which can be used for the conversion connection of cu and al cables or for the cu-al conversion connection, the cu-al connection fitting of this structure is generally manufactured by first manufacturing a cu-al composite plate, and then manufacturing the plate by machining, the machining process is relatively complex, and the production efficiency is too low, which is not suitable for mass production.
Disclosure of Invention
The invention aims to provide a processing technology of a copper-aluminum switching hardware fitting, which can quickly and efficiently produce the copper-aluminum switching hardware fitting, has high production efficiency, and does not generate the problems of cracking of a copper-aluminum contact interface and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
a processing device of a copper-aluminum switching hardware fitting comprises a wiring copper pipe and a wiring aluminum column, wherein the wiring aluminum column is positioned inside the wiring copper pipe, a copper-aluminum composite metal layer is arranged at a copper-aluminum contact interface, and a blind hole convenient for aluminum wire connection is arranged in the middle of the wiring aluminum column; the processing equipment comprises:
a first heating crucible for melting the copper material by heating, and a second heating crucible for melting the aluminum material by heating; the first heating crucible and the second heating crucible are connected with a cavity of the forming mold through a guide pipe, and a switch is arranged on the guide pipe; the forming die comprises a template, a cavity module, a first core and a second core abutted against the first core, wherein a copper liquid casting forming space is formed among the first core, the first core and the cavity module; a water cooling device is arranged on the cavity module around the second core to form a crystallization area; the second mold core is provided with a heating device, and the heating temperature is 850-1050 ℃.
Preferably, the heating temperature of the second core is 950-1050 ℃.
According to the processing equipment, the processing technology of the copper-aluminum adapter fitting comprises the following steps:
s1: putting industrial pure copper serving as a raw material into a first heating crucible, and casting at 1170-1250 ℃ to form copper liquid; putting an industrial pure aluminum raw material into a second heating crucible, and casting at the temperature of 730-820 ℃ to form aluminum liquid;
s2: the first mold core is abutted against the end face of the second mold core to form a copper liquid casting forming space with the mold cavity module, the second mold core is heated by a heating device, the heating temperature is 850-1050 ℃, a copper liquid switch is firstly opened, and copper liquid is injected into a forming mold to form a copper pipe with a set thickness; then the second mold core is drawn out, an aluminum liquid casting space is formed in the formed copper pipe, an aluminum liquid switch is opened, the aluminum liquid flows into the copper pipe, and the aluminum liquid is contacted with the inner surface of the copper pipe; the cooling water flow in the crystallization area is 12-25L/min, and the copper-aluminum crystallization time is 0.5-1.5 min; forming a copper-aluminum composite layer on a copper-aluminum contact interface;
s3: ejecting the first mold core through an ejection mechanism so as to take out the formed copper-aluminum adapter fitting blank from the mold;
s4: the manufactured copper-aluminum adapter fitting blank with the copper-aluminum composite layer is machined according to the design size, a blind hole is formed in the middle of an aluminum metal rod inside a copper pipe, and the end face of the copper-aluminum adapter fitting blank is processed to obtain the copper-aluminum adapter fitting convenient for connection of copper and aluminum wires.
Preferably, in the step S2, the heating temperature of the second core is 950-1050 ℃, the cooling water flow rate in the crystallization area is 18 +/-3L/min, and the copper-aluminum crystallization time is 1.0-1.3 min.
Preferably, in the copper-aluminum adapter fitting, the wall thickness of the metal copper pipe is 0.5-1.5mm, and the radius of the middle aluminum bar is more than 3 times (including) the wall thickness of the copper pipe; the thickness of the copper-aluminum composite layer is 30-80 mu m.
Compared with the prior art, the copper-aluminum switching hardware tool prepared by the processing equipment and the process of the copper-aluminum switching hardware tool has the advantages of small and attractive structure and low manufacturing cost, the wiring aluminum column is formed inside the wiring copper pipe through the copper-aluminum continuous casting forming process, and a copper-aluminum composite layer is formed at the copper-aluminum contact interface, so that the copper-aluminum switching hardware tool can be applied to copper-aluminum cable switching of a photovoltaic connection system and copper-aluminum switching in a connector, the contact surfaces of copper and aluminum can be effectively prevented from being broken, when the whole body is slightly bent by external force, a good electric connection effect can be still ensured, and the use reliability is high; in addition, the copper core cable and the aluminum core cable at the two ends are fixedly connected in an inserting manner, so that the installation is convenient and firm, and the service life is long; the method is beneficial to replacing copper with aluminum in photovoltaic system connection or other large-current application occasions, saves the consumption of copper resources and reduces the cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a copper-aluminum adapter fitting prepared by the processing technology of the present invention;
FIG. 2 is a schematic structural diagram of a forming mold of the copper-aluminum adapter fitting processing technology of the present invention;
fig. 3 is a schematic process diagram of the copper-aluminum adapter fitting processing technology of the present invention.
The reference numbers in the drawings are as follows: the connecting structure comprises a connecting copper pipe 1, a connecting aluminum column 2, a copper core wire cable 3, an aluminum core wire cable 4, a copper wire terminal 11, an aluminum wire terminal 12, a connecting section 13, a switching section 14 and a blind hole 21.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1, the copper-aluminum adapter fitting prepared by the copper-aluminum adapter fitting processing technology of the present invention includes a wiring copper tube 1 and a wiring aluminum column 2, wherein the wiring aluminum column 2 is located inside the wiring copper tube 1; the two ends of the wiring copper pipe 1 are respectively a copper wire wiring end 11 and an aluminum wire wiring end 12, the wiring copper pipe 1 is sequentially divided into a wiring section 13 and a switching section 14 along the axis direction, the wiring section 13 is connected with the copper wire wiring end 11, and the copper core wire cable 3 is inserted into the cavity of the wiring section 13 from the copper wire wiring end 11; the adapter section 14 is filled with the wiring aluminum column 2, the wiring aluminum column 2 is provided with a counter bore 21 inwards along the axis at the aluminum wire terminal 12, and the aluminum core wire cable 4 is inserted into the counter bore 21 from the aluminum wire terminal 12.
Referring to fig. 2, the copper-aluminum adapter hardware processing equipment of the present invention includes a first heating crucible 10 for melting a copper material by heating, and a second heating crucible 20 for melting an aluminum material by heating; the first heating crucible 10 and the second heating crucible 20 are connected with a cavity of a forming mold through guide pipes, and switches 102 and 202 are arranged on the guide pipes; the forming die comprises a template 30, a cavity module 31, a first core 32 and a second core 33 abutted against the first core 32, wherein a copper liquid casting forming space is formed among the first core 32, the first core 32 and the cavity module 31; a water cooling device is arranged on the cavity module 31 around the second core 33 to form a crystallization area; the second mold core 33 is provided with a heating device (not shown), and the heating temperature is 850-1050 ℃.
According to the processing equipment, as shown in fig. 3, the processing technology of the copper-aluminum adapter fitting comprises the following steps:
s1: putting industrial pure copper, such as standard cathode copper with the copper content of more than 99.95 percent, as a raw material into a first heating crucible, and casting at the temperature of 1170-1250 ℃ to form copper liquid; putting an industrial pure aluminum raw material with the aluminum content of more than 99.5% into a second heating crucible, and casting at the temperature of 730-820 ℃ to form aluminum liquid;
s2: the end faces of the first core 32 and the second core 33 are abutted, a copper liquid casting forming space is formed between the first core 32 and the cavity module 31, the second core 33 is heated by a heating device, the heating temperature is 850-1050 ℃, a copper liquid switch is opened firstly, and copper liquid is injected into a forming die to form a copper pipe with a set thickness; then the second core 33 is drawn out, an aluminum liquid casting space is formed in the formed copper pipe, an aluminum liquid switch is opened, the aluminum liquid flows into the copper pipe, and the aluminum liquid is contacted with the inner surface of the copper pipe; the cooling water flow in the crystallization area is 12-25L/min, and the copper-aluminum crystallization time is 0.5-1.5 min; thus, a copper-aluminum composite layer is formed on the contact interface of copper and aluminum;
s3: the first mold core 32 is ejected out through an ejection mechanism, so that the formed copper-aluminum adapter fitting blank is taken out of the mold;
s4: the manufactured copper-aluminum adapter fitting blank with the copper-aluminum composite layer is machined according to the design size, a blind hole is formed in the middle of an aluminum metal rod inside a copper pipe, and the end face of the copper-aluminum adapter fitting blank is processed to obtain the copper-aluminum adapter fitting convenient for connection of copper and aluminum wires.
In a preferred embodiment, in the step S2, the heating temperature of the second core is 950 to 1050 ℃, the cooling water flow rate in the crystallization zone is 18 ± 3L/min, and the copper-aluminum crystallization time is 1.0 to 1.3 min; by heating the second mold core, the copper pipe still has higher temperature when aluminum liquid is injected, the atomic activity of metal is ensured, the metal atoms at the contact interface of copper and aluminum can be conveniently permeated, and a reliable copper-aluminum composite layer is formed.
In another preferred embodiment, in the copper-aluminum adapter fitting, the wall thickness of the metal copper pipe is 0.5-1.5mm, and the radius of the middle aluminum bar is more than 3 times (inclusive) of the wall thickness of the copper pipe; the thickness of the copper-aluminum composite layer is 30-80 mu m. Because the conductivity of aluminum is only 62% of that of copper, under the same current-carrying requirement, the diameter of the aluminum core cable 4 needs to be larger than that of the copper core cable 3, and therefore, according to actual requirements, the diameter of the inner cavity of the switching section 14 of the wiring copper tube 1 needs to be larger than that of the inner cavity of the connecting section.
Present copper aluminium switching gold utensil, connect the copper part of copper core cable and connect the aluminium matter part of aluminium core cable between connect the face and connect through the welding usually, after passing through many times cold and hot circulation (circular telegram and outage) in operation, because the partial coefficient of thermal expansion of aluminium matter of junction is greater than the coefficient of thermal expansion of copper part, can produce great clearance influence contact in connecting face department, contact resistance has been increased simultaneously, contact resistance increases, can further arouse the temperature rise, the aggravation corrodes the oxidation, the area of face of weld in addition is generally less, consequently use easy after a period breaking occur at the junction.
The copper-aluminum switching hardware fitting is characterized in that a wiring copper pipe 1 is arranged outside the copper-aluminum switching hardware fitting, a wiring aluminum column 2 is positioned inside the wiring copper pipe 1, and a copper-aluminum composite layer is directly formed at a contact interface of copper and aluminum through a continuous casting process. When in use, the copper core of the copper core cable 3 is connected from the copper wire terminal 11, inserted into the wiring section 13 of the wiring copper pipe 1 and fixed, the copper core is directly contacted with the inner side wall of the wiring section 13, and the copper core of the copper core cable 3 is generally provided with a protective layer enameled with tin; the aluminum core of the aluminum wire cable is connected from the aluminum wire terminal 12 and inserted into the blind hole 21 of the wiring aluminum column 2, so that the switching of the copper core cable 3 and the aluminum core cable 4 is realized. The copper-aluminum adapter fitting with the structure has the advantages that the contact surface between the wiring copper pipe 1 and the wiring aluminum column 2 is the copper-aluminum composite layer of the whole outer side surface of the wiring aluminum column 2 and the whole inner side surface of the adapter section 14 of the wiring copper pipe 1, a copper layer and an aluminum layer with clear interfaces do not exist, the problem of contact surface fracture caused by different thermal expansion coefficients of copper and aluminum can be avoided, the service life is longer, and the copper-aluminum adapter fitting is safer and more reliable.
When the copper-aluminum wire switching fitting is used, the connecting positions of the copper core wire cable 3 and the aluminum core wire cable 4 are both tubular along the axis, the copper core or the aluminum core is directly inserted and fixed during installation, the installation is rapid, the condition of core wire fracture can be effectively avoided, and the electric connection effect is stable and excellent.
In a preferred embodiment, the connection position of the connection section 13 and the transition section 14 is a tapered slope transition structure, the diameter of the transition section 14 of the copper connection tube 1 to the diameter of the connection section 13 is gradually reduced and transited through the tapered structure, the bending resistance of the copper connection tube 1 is enhanced, and the connection section and the transition section 14 can be quickly distinguished from each other in appearance.
In one embodiment, the copper core of the copper core cable 3 is inserted and fixed inside the connection section 13 of the copper connection tube 1 by riveting or welding; the aluminum core of the aluminum core cable 4 is inserted and fixed in the blind hole 21 of the wiring aluminum column 2 in a riveting or welding mode, so that the firmness of connection between the copper core cable 3 and the aluminum core cable 4 and the copper-aluminum wire switching fitting is further ensured, the copper core cable 3 or the aluminum core cable 4 is prevented from falling off, and the internal electric connection effect is ensured.
In conclusion, the high-reliability copper-aluminum wire switching hardware fitting has the advantages of small and attractive structure and low manufacturing cost, the wiring aluminum column is molded inside the wiring copper pipe through the copper and aluminum continuous casting molding process, the copper-aluminum composite layer is formed at the copper-aluminum contact interface, the copper-aluminum composite layer can be applied to copper-aluminum cable switching of a photovoltaic connecting system and copper-aluminum switching in a connector, the copper and aluminum contact surfaces can be effectively prevented from being broken, and when the whole body is slightly bent by external force, the good electric connection effect can be still ensured, and the use reliability is high; in addition, the copper core cable and the aluminum core cable at the two ends are fixedly connected in an inserting manner, so that the installation is convenient and firm, and the service life is long; the method is beneficial to replacing copper with aluminum in photovoltaic system connection or other large-current application occasions, saves the consumption of copper resources and reduces the cost.
The present invention has been described in relation to the above embodiments, which are only examples of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.
Claims (5)
1. A processing device of a copper-aluminum switching hardware fitting comprises a wiring copper pipe and a wiring aluminum column, wherein the wiring aluminum column is positioned inside the wiring copper pipe, a copper-aluminum composite metal layer is arranged at a copper-aluminum contact interface, and a blind hole convenient for aluminum wire connection is arranged in the middle of the wiring aluminum column; it is characterized in that the processing equipment comprises:
a first heating crucible for melting the copper material by heating, and a second heating crucible for melting the aluminum material by heating; the first heating crucible and the second heating crucible are connected with a cavity of the forming mold through a guide pipe, and a switch is arranged on the guide pipe; the forming die comprises a template, a cavity module, a first core and a second core abutted against the first core, wherein a copper liquid casting forming space is formed among the first core, the first core and the cavity module; a water cooling device is arranged on the cavity module around the second core to form a crystallization area; the second mold core is provided with a heating device, and the heating temperature is 850-1050 ℃.
2. The processing equipment of the copper-aluminum adapter fitting as claimed in claim 1, wherein the heating temperature of the second core is 950-1050 ℃.
3. The processing technology of the copper-aluminum adapter fitting processing equipment according to claim 1, characterized in that the processing technology comprises the following steps:
s1: putting industrial pure copper serving as a raw material into a first heating crucible, and casting at 1170-1250 ℃ to form copper liquid; putting an industrial pure aluminum raw material into a second heating crucible, and casting at the temperature of 730-820 ℃ to form aluminum liquid;
s2: the first mold core is abutted with the end face of the second mold core, a copper liquid casting forming space is formed between the first mold core and the mold cavity module, the second mold core is heated through a heating device, the heating temperature is 850-1050 ℃, a copper liquid switch is firstly opened, and copper liquid is injected into a forming mold to form a copper pipe with a set thickness; then the second mold core is drawn out, an aluminum liquid casting space is formed in the formed copper pipe, an aluminum liquid switch is opened, the aluminum liquid flows into the copper pipe, and the aluminum liquid is contacted with the inner surface of the copper pipe; the cooling water flow in the crystallization area is 12-25L/min, and the copper-aluminum crystallization time is 0.5-1.5 min; forming a copper-aluminum composite layer on a copper-aluminum contact interface;
s3: ejecting the first mold core through an ejection mechanism so as to take out the formed copper-aluminum adapter fitting blank from the mold;
s4: the manufactured copper-aluminum adapter fitting blank with the copper-aluminum composite layer is machined according to the design size, a blind hole is formed in the middle of an aluminum metal rod inside a copper pipe, and the end face of the copper-aluminum adapter fitting blank is processed to obtain the copper-aluminum adapter fitting convenient for connection of copper and aluminum wires.
4. The processing technology of the copper-aluminum adapter fitting as claimed in claim 3, wherein in the step S2, the heating temperature of the second core is 950-1050 ℃, the cooling water flow rate in the crystallization area is 18 +/-3L/min, and the copper-aluminum crystallization time is 1.0-1.3 min.
5. The processing technology of the copper-aluminum adapter fitting of claim 3, wherein in the copper-aluminum adapter fitting, the wall thickness of a metal copper pipe is 0.5-1.5mm, and the radius of a middle aluminum bar is more than 3 times (including) the wall thickness of the copper pipe; the thickness of the copper-aluminum composite layer is 30-80 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210437034.1A CN114725699A (en) | 2022-04-25 | 2022-04-25 | Processing equipment and processing technology of copper-aluminum adapter fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210437034.1A CN114725699A (en) | 2022-04-25 | 2022-04-25 | Processing equipment and processing technology of copper-aluminum adapter fitting |
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| Publication Number | Publication Date |
|---|---|
| CN114725699A true CN114725699A (en) | 2022-07-08 |
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|---|---|---|---|
| CN202210437034.1A Pending CN114725699A (en) | 2022-04-25 | 2022-04-25 | Processing equipment and processing technology of copper-aluminum adapter fitting |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1927504A (en) * | 2006-09-04 | 2007-03-14 | 北京科技大学 | Coating material horizontal continuous casting direct recombination forming apparatus and technology |
| CN101704091A (en) * | 2009-11-13 | 2010-05-12 | 华鹏集团有限公司 | Copper-aluminium compound circular tube casting crystallizer device |
| CN204614986U (en) * | 2015-05-18 | 2015-09-02 | 湖南湘贤科技有限公司 | Copper-aluminum transition connecting terminal |
| CN108453244A (en) * | 2018-03-06 | 2018-08-28 | 王书杰 | The preparation facilities of copper clad aluminum composite bar |
| CN216133990U (en) * | 2021-11-30 | 2022-03-25 | 小牛电气(苏州)有限公司 | Waterproof reliable copper aluminium wire adapter |
-
2022
- 2022-04-25 CN CN202210437034.1A patent/CN114725699A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1927504A (en) * | 2006-09-04 | 2007-03-14 | 北京科技大学 | Coating material horizontal continuous casting direct recombination forming apparatus and technology |
| CN101704091A (en) * | 2009-11-13 | 2010-05-12 | 华鹏集团有限公司 | Copper-aluminium compound circular tube casting crystallizer device |
| CN204614986U (en) * | 2015-05-18 | 2015-09-02 | 湖南湘贤科技有限公司 | Copper-aluminum transition connecting terminal |
| CN108453244A (en) * | 2018-03-06 | 2018-08-28 | 王书杰 | The preparation facilities of copper clad aluminum composite bar |
| CN216133990U (en) * | 2021-11-30 | 2022-03-25 | 小牛电气(苏州)有限公司 | Waterproof reliable copper aluminium wire adapter |
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