CN110306075A - A kind of New-energy electric vehicle charging pile leads tellurium zirconium copper alloy continuous casting process with Cutting free height - Google Patents
A kind of New-energy electric vehicle charging pile leads tellurium zirconium copper alloy continuous casting process with Cutting free height Download PDFInfo
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- CN110306075A CN110306075A CN201910510083.1A CN201910510083A CN110306075A CN 110306075 A CN110306075 A CN 110306075A CN 201910510083 A CN201910510083 A CN 201910510083A CN 110306075 A CN110306075 A CN 110306075A
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- tellurium
- copper alloy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
- B22D11/004—Copper alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
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Abstract
The invention discloses a kind of New-energy electric vehicle charging piles to lead tellurium zirconium copper alloy continuous casting process with Cutting free height; it is characterized in that including the following steps: step 1; under the protection of inert gas, the tellurium copper alloy that purity is 99.9% tough cathode, Te content is 73%-75% is sequentially added into melting furnace, the phosphor copper that the zirconium copper alloy that Cu-10Zr content is 40% and P phosphorus content are 13%-15%；Above-mentioned tellurium copper alloy solution is used Continuous Up casting method to draw diameter in holding furnace as 18~25 millimeters of tellurium zirconium copper alloy bar by step 2 using copper bar crystallizer；Step 3 repeats step 1 when the liquid level of holding furnace drops to the X/Y of furnace body height.Not only short route realizes upward-casting process continuously casting tellurium zirconium copper alloy bar to tellurium zirconium copper alloy continuous casting process of the invention, while the tellurium zirconium copper alloy plate chemical component cast out is uniform.The production efficiency of tellurium zirconium copper alloy, while its chemical composition stability are not only effectively improved using the present invention, product quality is high.
Description
Technical field
The present invention relates to Copper fabrication fields more particularly to a kind of New-energy electric vehicle charging pile to lead tellurium zirconium with Cutting free height
Copper alloy continuous casting process.
Background technique
Currently, the problems such as domestic new-energy automobile charging pile grows (3-5 hours) there are the charging time.It is primarily due to make
Brass conductive rate is low (20%IACS or so).National standard " the electric car Charging issued and implemented by January 1st, 2016
Unite technical specification " requirement of the charging time within 1 hour, the conductivity of copper alloy should be in 80%IACS or more.Present one
A little enterprises are testing using fine copper (conductivity=100%IACS), but the machinability of fine copper is very poor, dimensional accuracy especially surface
Finish can not meet performance requirement.
The free-cutting copper alloy of highly conductive (90%IACS), at present both at home and abroad only tellurium copper (Cu-0.4%Te alloy C14500)
It is a kind of.Although C14500 is a very ancient alloy for having 60 years history, due to up to the present, not using suitably
On the way, both at home and abroad large-scale Copper fabrication enterprise almost without studying and be mass produced C14500's.China market forms following at present
Situation, for domestic tellurium copper (C14500) since manufacturing process is simple and crude, product quality is unqualified；And external a small amount of imported product price mistake
High (100,000 yuan/ton or more).
Domestic C14500 Bar Wire Product is mainly produced by some small-sized Copper fabrication factories, and production technology is as follows: small-sized
After crucible furnace melting will copper liquid import swage in formed circle ingot casting (about 300-500 kilogram weight), then by it is a series of squeeze,
Final product is formed after the processes such as drawing and annealing.Because be iron mould casting, Te is unevenly distributed in ingot casting, so that finally
The performance of product is also uneven, influences the electric conductivity and cutting ability of product.Simultaneously because production efficiency is lowly to make its valence
Lattice are high, and limits throughput, far from the construction demand for meeting charging pile.
In view of the above-mentioned problems, also there are many research achievements in the country at present, for example Publication No. CN104928520A is disclosed
A kind of high impedance electric arc and lead-free free-cutting tellurium copper alloy material, are made of the raw material of following weight percent content:
Te0.4%-0.7%；P0.01%-0.015%；Cu surplus.Due to the adoption of the above technical scheme, tellurium copper alloy made of the present invention is simultaneous
Care for fabulous free cutting property and excellent conduction, thermal conductivity and higher obdurability, anticorrosive and anti-electric ablation property, together
When tool with the comparable arc resistance energy of yellow gold, cold and hot working better performances, can forge, pressing drawing, punching molding.The party
The processing efficiency of case is relatively low, is unable to satisfy the needs of large-scale production.
A kind of electric automobile charging pile connector tellurium copper alloy and its life of Publication No. CN106222477B for another example
Production. art, with Cu-CATH-1, copper tellurium intermediate alloy, copper chromium intermediate alloy, copper cobalt intermediate alloy, copper and indium intermediate alloy, copper yttrium
Intermediate alloy, copper antimony intermediate alloy, copper selenium intermediate alloy are raw material, melting and casting are carried out, using continuously extruded or hot extrusion
Method processed, then by solid solution, cold rolling, timeliness, drawing, be prepared for high electronic of intensity height, conductivity
Automobile charging pile connector tellurium copper alloy.Tellurium copper alloy in the program not only raw material it is complicated, it is at high cost, be difficult to realize, together
When its processing efficiency it is relatively low, be unable to satisfy the needs of large-scale production.
Summary of the invention
Present invention aims to solve the deficiencies of the prior art, and provides a kind of a kind of New-energy electric vehicle charging pile Cutting frees
Height leads tellurium zirconium copper alloy continuous casting process, to effectively shorten process flow, and ensures that tellurium zirconium copper alloy stick chemical component is equal
It is even.
The technical solution adopted by the present invention is that: a kind of New-energy electric vehicle charging pile leads tellurium zirconium copper alloy with Cutting free height
Continuous casting process under the protection of inert gas, successively adds it is characterized in that including the following steps: step 1 into melting furnace
Enter the tellurium copper alloy that purity is 99.9% tough cathode, Te content is 73%-75%, the zirconium copper alloy and P phosphorus that Cu-10Zr content is 40%
Content is the phosphor copper of 13%-15%；Step 2, it is continuous using above drawing using copper bar crystallizer by above-mentioned tellurium copper alloy solution
Casting draws the tellurium zirconium copper alloy bar that diameter is 18~25 millimeters in holding furnace；Step 3, when the liquid level of holding furnace declines
To furnace body height X/Y when, repeat step 1.
As a further improvement of the present invention, the inert gas of the step 1 is nitrogen.
As a further improvement of the present invention, fusion temperature is controlled at 1160 °C~1170 ° in the step 1 melting furnace
C。
As a further improvement of the present invention, the casting temperature of the step 2 holding furnace is controlled at 1150 °C~1155 °
C。
As a further improvement of the present invention, the melting furnace is corundum power frequency induction furnace.
The beneficial effect that the present invention uses is: tellurium zirconium copper alloy continuous casting process of the invention is not only in short route realization
Draw continuous metal cast process continuously casting tellurium zirconium copper alloy bar, while the tellurium zirconium copper alloy plate chemical component cast out is uniform.Using this
Invention not only effectively improves the production efficiency of tellurium zirconium copper alloy, while its chemical composition stability, and product quality is high.
Specific embodiment
Below with reference to embodiment, the present invention is described further.
Embodiment 1, step 1, interior even addition tellurium copper, zirconium copper alloy in melting furnace solution.By automatic feeding system,
Under inert gas protection, according to the volume of smelting furnace and melting capacity, by purity be 99.9% tough cathode, Te content is 73%
The phosphor copper that tellurium copper alloy, Cu-10Zr40% zirconium copper alloy and P phosphorus content are 13% is successively quantitatively fixed more molten than investment melting furnace
Change, fusion temperature at 1160 DEG C, have a style of one's own with holding furnace by power frequency melting furnace, and 1160 DEG C or so alloyed copper liquid pass through connecting hole
Into holding furnace；Tellurium copper alloy, phosphor bronze alloy are in the melting furnace copper liquid being added in the state of nitrogen closed protection.Tellurium
Solubility in copper is very small (only 0.01% at 800 DEG C), Cu2Te is mainly generated in copper, in the form of the second coarse phase
It is present between crystal boundary；Zirconium crystal structure close-packed hexagonal, 1852 DEG C of fusing point, zr element fusing point is high, is formed by peroxide breaks down pressure
It is smaller, when encountering vacuum error in furnace charge moisture or furnace, easily generate oxidation.In production measured ZrO be it is above-mentioned certain
The oxidation product of reason, it is deoxidation that the phosphor copper main function that P content is 13%-15%, which is added,.
Step 2, up casting method continuous production tellurium zirconium copper alloy bar.By above-mentioned uniformly mixed tellurium copper alloy solution,
Using copper bar crystallizer, uses the method for Continuous Up casting to draw diameter in holding furnace as 18mm tellurium zirconium copper alloy bar, protect
Warm furnace casting temperature is at 1150 °C；
Step 3, when the liquid level of holding furnace drops to certain position, then quantitatively certainty ratio to melting furnace add tough cathode, tellurium copper
Alloy, zirconium copper alloy and phosphor copper, so that copper alloy casting temperature, speed, casting liquid level keep relative constant, and then ensure
The uniformity of tellurium copper, zirconium copper alloy composition.
It obtains through research, is significantly affected in the softening temperature that Cu addition Zr can improve copper strongly when Zr content is more than 1%
Alloy plasticity, but intensity is high, excellent cutting performance.
Embodiment 2, step 1 under inert gas protection, according to the volume of smelting furnace and are melted by automatic feeding system
Change ability, by the tellurium copper alloy, Cu-10Zr40% zirconium copper alloy and P phosphorus content that purity is 99.9% tough cathode, Te content is 75%
Successively quantitatively fixed than investment melting furnace fusing for 15% phosphor copper, fusion temperature is at 1170 DEG C；Among tellurium copper alloy, phosphor-copper
Alloy is in the melting furnace copper liquid being added in the state of nitrogen closed protection；Melting furnace uses corundum main frequency furnace, due to pure
Tellurium it is expensive, and tellurium copper alloy brittleness is very big, with the production of common main frequency furnace by largely effect on copper and alloy material at
Part, to influence and reduce production capacity.Making material is generally quartziferous, magnesia, magnesium in country's main frequency furnace furnace at present
The dry type ramming materials such as point, although at low cost, tellurium copper alloy easily reacts with furnace lining.Using corundum material as main frequency furnace furnace
With tellurium copper alloy, zirconium copper alloy any chemistry does not occur for interior making material, it is ensured that tellurium zirconium copper alloy chemical analysis is stablized.
Step 2, up casting method continuous production tellurium zirconium copper alloy bar.By above-mentioned uniformly mixed tellurium copper alloy solution,
Using copper bar crystallizer, uses the method for Continuous Up casting to draw diameter in holding furnace as 25mm tellurium zirconium copper alloy bar, protect
Warm furnace casting temperature is at 1155 °C；
Step 3, when the liquid level of holding furnace drops to certain position, then quantitatively certainty ratio to melting furnace add tough cathode, tellurium copper
Alloy, zirconium copper alloy and phosphor copper, it is ensured that product quality and continuous production.
Compared with prior art, the present invention having following obvious advantage:
(1) short route realizes upward-casting process continuously casting tellurium zirconium copper alloy bar；Since tellurium (Te) is lighter than Cu very much, using biography
The swage die casting of system, copper liquid is imported in swage form circle ingot casting after small-sized crucible furnace melting, and ingot casting sawing passes through extruding
Afterwards, tellurium copper alloy bar material is produced.Its process flow is that --- semi-continuous casting --- sawing ingot casting --- squeezes tellurium copper alloy solution
Tellurium copper alloy bar material.Major defect is that process flow is long, is unable to scale continuous production tellurium copper alloy bar material.The present invention can be direct
Continuous copper rod is produced from the copper liquid of melting, can effectively avoid the disadvantages mentioned above of traditional iron mould casting technique.Its technique stream
Journey is tellurium copper alloy solution --- the continuous casting of up-drawing method ---, and tellurium zirconium copper alloy bar has process short, scale continuous production tellurium
The obvious advantage of copper alloy material.Although upward-casting process is commonly used when fine copper class is processed, it is directly used into tellurium
In zirconium copper alloy, need to overcome problems.Technique of the invention overcomes the above problem one by one.
(2) the tellurium zirconium copper alloy bar chemical component cast out is uniform；Traditional swage die casting, manually adds in swage and matches
Than good tellurium copper alloy, it is cast into tellurium copper alloy heavy stone used as an anchor base, is technically not easy to guarantee the uniform of chemical analysis in tellurium copper alloy solution.
The present invention is by automatic feeding system, under inert gas protection, according to the volume of smelting furnace and fusing and ability, by each raw material according to
It is secondary quantitative fixed than investment melting furnace fusing；Tellurium copper alloy solution after mixing utilizes copper bar crystallizer, Continuous Up casting
Method draw tellurium zirconium copper alloy material, realize continuous large-scale production.When dropping to certain position due to the liquid level of holding furnace,
Certainty ratio is quantified again to melting furnace addition tough cathode, tellurium copper alloy, zirconium copper and phosphor copper, it is ensured that copper alloy bar chemistry at
Divide uniform.
(3) special material makes power frequency induction furnace, it is ensured that tellurium copper alloy is not chemically reacted with furnace lining；Domestic main frequency furnace
Making material is generally the dry type ramming materials such as quartziferous, magnesia, magnesium point in furnace, and tellurium copper alloy easily reacts with furnace lining,
It is expensive due to pure tellurium, and tellurium copper alloy brittleness is very big, will largely effect on copper and conjunction with the production of common main frequency furnace up-drawing method
The composition of golden material is to influence and reduce production capacity, and making material uses corundum material in main frequency furnace furnace of the invention
Material, any chemistry does not occur with tellurium copper alloy, zirconium copper alloy, it is ensured that tellurium copper alloy ingredient stability.
Those skilled in the art should know the protection scheme of the present invention is not limited only to the above embodiments, can also be
Various permutation and combination and transformation are carried out on the basis of above-described embodiment, on the premise of without prejudice to spirit of the invention, to the present invention
The various transformation carried out are fallen within the scope of protection of the present invention.
Claims (5)
1. a kind of New-energy electric vehicle charging pile leads tellurium zirconium copper alloy continuous casting process with Cutting free height, it is characterized in that including
Following steps:
Step 1 sequentially adds that purity is 99.9% tough cathode, Te content is into melting furnace under the protection of inert gas
The phosphor copper that the zirconium copper alloy and P phosphorus content that the tellurium copper alloy of 73%-75%, Cu-10Zr content are 40% are 13%-15%；
Step 2 draws above-mentioned tellurium copper alloy solution using copper bar crystallizer using Continuous Up casting method in holding furnace
The tellurium zirconium copper alloy bar that diameter is 18~25 millimeters；
Step 3 repeats step 1 when the liquid level of holding furnace drops to the X/Y of furnace body height.
2. a kind of New-energy electric vehicle charging pile according to claim 1 is led tellurium zirconium copper alloy with Cutting free height and is continuously cast
Technique is made, it is characterized in that the inert gas of the step 1 is nitrogen.
3. a kind of New-energy electric vehicle charging pile according to claim 1 is led tellurium zirconium copper alloy with Cutting free height and is continuously cast
Technique is made, it is characterized in that fusion temperature control is at 1160 °C~1170 °C in the step 1 melting furnace.
4. a kind of New-energy electric vehicle charging pile according to claim 1 is led tellurium zirconium copper alloy with Cutting free height and is continuously cast
Technique is made, it is characterized in that the casting temperature of the step 2 holding furnace is controlled at 1150 °C~1155 °C.
5. a kind of New-energy electric vehicle charging pile as claimed in any of claims 1 to 4 leads tellurium with Cutting free height
Zirconium copper alloy continuous casting process, it is characterized in that the melting furnace is corundum power frequency induction furnace.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910510083.1A CN110306075A (en) | 2019-06-13 | 2019-06-13 | A kind of New-energy electric vehicle charging pile leads tellurium zirconium copper alloy continuous casting process with Cutting free height |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910510083.1A CN110306075A (en) | 2019-06-13 | 2019-06-13 | A kind of New-energy electric vehicle charging pile leads tellurium zirconium copper alloy continuous casting process with Cutting free height |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112575217A (en) * | 2020-12-26 | 2021-03-30 | 铜陵有色股份铜冠电工有限公司 | Tellurium-copper alloy for new energy and processing method thereof |
| CN115679146A (en) * | 2022-10-28 | 2023-02-03 | 宁波金田铜业(集团)股份有限公司 | Copper alloy and preparation method thereof |
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| CN1534101A (en) * | 2003-04-01 | 2004-10-06 | 安徽铜都铜业股份有限公司铜材厂 | Processing method of anode phosphorus copper alloy material |
| CN102676870A (en) * | 2012-06-07 | 2012-09-19 | 铁岭富兴铜业有限公司 | Lead-free copper alloy wire material and preparation method thereof |
| CN104928520A (en) * | 2014-12-31 | 2015-09-23 | 上海方奕企业发展有限公司 | High-conductivity, arc-resistance and free-cutting leadfree tellurium copper alloy material |
| CN109248936A (en) * | 2018-09-03 | 2019-01-22 | 江西理工大学 | A kind of production method of the highly conductive copper rod of charging pile plug Cutting free |
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2019
- 2019-06-13 CN CN201910510083.1A patent/CN110306075A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1534101A (en) * | 2003-04-01 | 2004-10-06 | 安徽铜都铜业股份有限公司铜材厂 | Processing method of anode phosphorus copper alloy material |
| CN102676870A (en) * | 2012-06-07 | 2012-09-19 | 铁岭富兴铜业有限公司 | Lead-free copper alloy wire material and preparation method thereof |
| CN104928520A (en) * | 2014-12-31 | 2015-09-23 | 上海方奕企业发展有限公司 | High-conductivity, arc-resistance and free-cutting leadfree tellurium copper alloy material |
| CN109248936A (en) * | 2018-09-03 | 2019-01-22 | 江西理工大学 | A kind of production method of the highly conductive copper rod of charging pile plug Cutting free |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112575217A (en) * | 2020-12-26 | 2021-03-30 | 铜陵有色股份铜冠电工有限公司 | Tellurium-copper alloy for new energy and processing method thereof |
| CN115679146A (en) * | 2022-10-28 | 2023-02-03 | 宁波金田铜业(集团)股份有限公司 | Copper alloy and preparation method thereof |
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