CN110385353B - Silver-copper alloy special-shaped wire for commutator - Google Patents
Silver-copper alloy special-shaped wire for commutator Download PDFInfo
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- CN110385353B CN110385353B CN201910653022.0A CN201910653022A CN110385353B CN 110385353 B CN110385353 B CN 110385353B CN 201910653022 A CN201910653022 A CN 201910653022A CN 110385353 B CN110385353 B CN 110385353B
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- silver
- copper alloy
- shaped wire
- commutator
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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
- B21C37/045—Manufacture of wire or bars with particular section or properties
-
- 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
- B22D11/14—Plants for continuous casting
- B22D11/145—Plants for continuous casting for upward casting
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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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- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Extraction Processes (AREA)
- Continuous Casting (AREA)
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Abstract
The invention relates to a silver-copper alloy special-shaped wire for a commutator, which comprises the following silver contents: 0.027% -0.030%, 0.075% -0.100%, conductivity greater than 99% IACS, oxygen content less than 5 ppm; the production method of the silver-copper alloy special-shaped wire for the commutator comprises the following steps: upward continuous casting, continuous extrusion and multi-pass continuous drawing.
Description
Technical Field
The invention relates to a non-ferrous metal material, in particular to a silver-copper alloy special-shaped wire for a commutator.
Background
The commutator is a key component of the direct current motor and is used for converting alternating current electromotive force and current in an armature winding into direct current electromotive force and current between brushes. The commutator segment is usually made of silver-copper alloy with high hardness and good electric conduction and wear resistance. The copper-silver alloy is prepared by adding a small amount of silver element into a copper matrix, the electric conductivity and the thermal conductivity of the copper alloy are reduced slightly, the influence on plasticity is small, and the recrystallization temperature and the creep strength of copper can be obviously improved. Because silver belongs to a solid solution strengthening type additive element, silver is easy to be added into copper, and the required product performance can be obtained by hot working or cold working, so that the copper-silver alloy is a copper material for a commutator which is widely obtained.
Disclosure of Invention
The silver content of the silver-copper alloy special-shaped wire for the commutator is as follows: 0.027% -0.030%, 0.075% -0.100%, conductivity greater than 99% IACS, oxygen content less than 5 ppm; the production method of the silver-copper alloy special-shaped wire for the commutator comprises the following steps: upward continuous casting, continuous extrusion and multi-pass continuous drawing.
The production method of the silver-copper alloy special-shaped wire for the commutator comprises the following specific steps:
(1) up-drawing continuous casting
A power frequency smelting device is adopted for up-drawing continuous casting of the silver-copper alloy rod, and the smelting device comprises a smelting furnace, a compartment, a holding furnace, a traction device and a coiling device.
The traction device comprises a crystallizer, a graphite mold, a sheath and a traction motor.
The graphite mould is arranged at the bottom of the crystallizer, and the joint of the graphite mould and the bottom of the crystallizer is plugged by asbestos threads and coated with graphite latex to prevent air intake and copper infiltration.
The diameter of the upward continuous casting copper rod is phi 12.5mm, the pitch is 3-5 mm, and the upward continuous casting speed of the copper rod is 600-650 mm/min; the liquid level height of the copper liquid is 400-450 mm; the melting furnace is covered by charcoal with the thickness of 100-150 mm, and the heat preservation furnace is covered by graphite phosphorus sheets with the thickness of 30-40 mm, and is level to the upper surface of the sheath.
Silver wires are added in the compartment on line, so that the silver content reaches 0.027% -0.030% and 0.075% -0.100%. The speed of adding the silver wires on line is as follows: 1 mm/min-2000 mm/min, the diameter of the silver wire is 3-10mm, and the silver content of the silver wire is more than 99.97%.
(2) Continuous extrusion
And continuously extruding the up-drawn continuous casting silver-copper alloy rod to prepare a silver-copper alloy special-shaped wire blank. The cross sections of the prepared silver-copper alloy deformed wire blank and the finished deformed copper strip are in the same proportion.
(3) Multiple pass continuous drawing
The silver-copper alloy special-shaped wire blank is continuously drawn in multiple passes, the deformation coefficient of each pass is 1.05-1.20, the die angle of a drawing die is 5 degrees, and the length of a die hole working band of the drawing die is 5 mm.
The invention has the beneficial effects that:
1. the method of on-line silver wire is adopted, so that the production automation is improved, and the stability of silver content is improved.
2. The production method of up-drawing continuous casting, continuous extrusion and multi-pass continuous drawing is adopted, and the method is efficient and energy-saving.
Detailed Description
Detailed description of the preferred embodiment 1
The invention is further described below with reference to specific embodiments.
The silver content of the silver-copper alloy special-shaped wire for the commutator is as follows: 0.028%, conductivity 100% IACS, oxygen content 3 ppm; the production method of the silver-copper alloy special-shaped wire for the commutator comprises the following steps: upward continuous casting, continuous extrusion and multi-pass continuous drawing.
The production method of the silver-copper alloy special-shaped wire for the commutator comprises the following specific steps:
(1) up-drawing continuous casting
A power frequency smelting device is adopted for up-drawing continuous casting of the silver-copper alloy rod, and the smelting device comprises a smelting furnace, a compartment, a holding furnace, a traction device and a coiling device.
The traction device comprises a crystallizer, a graphite mold, a sheath and a traction motor.
The graphite mould is arranged at the bottom of the crystallizer, and the joint of the graphite mould and the bottom of the crystallizer is plugged by asbestos threads and coated with graphite latex to prevent air intake and copper infiltration.
The diameter of the upward continuous casting copper rod is phi 12.5mm, the pitch is 3-5 mm, and the upward continuous casting speed of the copper rod is 600-650 mm/min; the liquid level height of the copper liquid is 400-450 mm; the melting furnace is covered by charcoal with the thickness of 100-150 mm, and the heat preservation furnace is covered by graphite phosphorus sheets with the thickness of 30-40 mm, and is level to the upper surface of the sheath.
Silver wires are added in the compartment on line, so that the silver content reaches 0.028%. The speed of adding the silver wires on line is as follows: 1 mm/min-2000 mm/min, the diameter of the silver wire is 3-10mm, and the silver content of the silver wire is more than 99.97%.
(2) Continuous extrusion
And continuously extruding the up-drawn continuous casting silver-copper alloy rod to prepare a silver-copper alloy special-shaped wire blank. The cross sections of the prepared silver-copper alloy deformed wire blank and the finished deformed copper strip are in the same proportion.
(3) Multiple pass continuous drawing
The silver-copper alloy special-shaped wire blank is continuously drawn in multiple passes, the deformation coefficient of each pass is 1.05-1.20, the die angle of a drawing die is 5 degrees, and the length of a die hole working band of the drawing die is 5 mm.
Detailed description of the preferred embodiment 2
The invention is further described below with reference to specific embodiments.
The silver content of the silver-copper alloy special-shaped wire for the commutator is as follows: 0.08%, conductivity 100% IACS, oxygen content 3 ppm; the production method of the silver-copper alloy special-shaped wire for the commutator comprises the following steps: upward continuous casting, continuous extrusion and multi-pass continuous drawing.
The production method of the silver-copper alloy special-shaped wire for the commutator comprises the following specific steps:
(1) up-drawing continuous casting
A power frequency smelting device is adopted for up-drawing continuous casting of the silver-copper alloy rod, and the smelting device comprises a smelting furnace, a compartment, a holding furnace, a traction device and a coiling device.
The traction device comprises a crystallizer, a graphite mold, a sheath and a traction motor.
The graphite mould is arranged at the bottom of the crystallizer, and the joint of the graphite mould and the bottom of the crystallizer is plugged by asbestos threads and coated with graphite latex to prevent air intake and copper infiltration.
The diameter of the up-drawing continuous casting copper rod is phi 12.5mm, the pitch is 5mm, and the speed of the up-drawing continuous casting copper rod is 600 mm/min; the liquid level height of the copper liquid is 450 mm; the melting furnace is covered by charcoal with the thickness of 150mm, and the heat preservation furnace is covered by graphite flakes with the thickness of 30mm and is level to the upper surface of the sheath.
Silver wires are added in the compartment on line, so that the silver content reaches 0.08%. The speed of adding the silver wires on line is as follows: 1 mm/min-2000 mm/min, the diameter of the silver wire is 3-10mm, and the silver content of the silver wire is more than 99.97%.
(2) Continuous extrusion
And continuously extruding the up-drawn continuous casting silver-copper alloy rod to prepare a silver-copper alloy special-shaped wire blank. The cross sections of the prepared silver-copper alloy deformed wire blank and the finished deformed copper strip are in the same proportion.
(3) Multiple pass continuous drawing
The silver-copper alloy special-shaped wire blank is continuously drawn in multiple passes, the deformation coefficient of each pass is 1.10, the die angle of a drawing die is 5 degrees, and the length of a die hole working band of the drawing die is 5 mm.
Claims (1)
1. The silver-copper alloy special-shaped wire for the commutator is characterized in that: the silver content of the silver-copper alloy special-shaped wire for the commutator is as follows: 0.08%, conductivity 100% IACS, oxygen content 3 ppm; the production method of the silver-copper alloy special-shaped wire for the commutator comprises the following steps: upward continuous casting, continuous extrusion and multi-pass continuous drawing; the production method of the silver-copper alloy special-shaped wire for the commutator comprises the following specific steps:
(1) up-drawing continuous casting
A power frequency smelting device is adopted for up-leading continuous casting of the silver-copper alloy rod, and the power frequency smelting device comprises a smelting furnace, a compartment, a holding furnace, a traction device and a coiling device;
the traction device comprises a crystallizer, a graphite mold, a sheath and a traction motor;
the graphite mould is arranged at the bottom of the crystallizer, and the joint of the graphite mould and the bottom of the crystallizer is plugged by asbestos threads and coated with graphite latex to prevent air intake from copper infiltration;
the diameter of the up-drawing continuous casting silver-copper alloy rod is phi 12.5mm, the pitch is 5mm, and the speed of the up-drawing continuous casting silver-copper alloy rod is 600 mm/min; the liquid level height of the copper liquid is 450 mm; the smelting furnace is covered by charcoal with the thickness of 150mm, and the heat preservation furnace is covered by graphite phosphorus sheets with the thickness of 30mm and is level to the upper surface of the sheath;
adding silver wires in the compartment on line to enable the silver content to reach 0.08%, wherein the speed of adding the silver wires on line is as follows: 1 mm/min-2000 mm/min, the diameter of the silver wire is 3-10mm, and the silver content of the silver wire is more than 99.97%;
(2) continuous extrusion
Continuously extruding an up-leading continuous casting silver-copper alloy rod to prepare a silver-copper alloy special-shaped wire blank, wherein the prepared silver-copper alloy special-shaped wire blank and the cross section of a finished silver-copper alloy special-shaped wire for the commutator are in the same proportion;
(3) multiple pass continuous drawing
The silver-copper alloy special-shaped wire blank is continuously drawn in multiple passes, the deformation coefficient of each pass is 1.1, the die angle of a drawing die is 5 degrees, and the length of a die hole working band of the drawing die is 5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910653022.0A CN110385353B (en) | 2019-07-19 | 2019-07-19 | Silver-copper alloy special-shaped wire for commutator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910653022.0A CN110385353B (en) | 2019-07-19 | 2019-07-19 | Silver-copper alloy special-shaped wire for commutator |
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| Publication Number | Publication Date |
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| CN110385353A CN110385353A (en) | 2019-10-29 |
| CN110385353B true CN110385353B (en) | 2020-11-06 |
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| CN201910653022.0A Active CN110385353B (en) | 2019-07-19 | 2019-07-19 | Silver-copper alloy special-shaped wire for commutator |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101008B (en) * | 2019-12-26 | 2021-08-17 | 浙江杭机新型合金材料有限公司 | High-strength high-conductivity copper-silver alloy material and preparation method thereof |
| CN111730050B (en) * | 2020-06-24 | 2021-09-03 | 湖南达诺智能机器人科技有限公司 | Gold continuous ingot casting equipment and ingot casting method using same |
| CN113215434A (en) * | 2021-04-30 | 2021-08-06 | 浙江利丰电器股份有限公司 | High-conductivity silver-copper alloy for commutator copper sheet |
| CN113234955A (en) * | 2021-04-30 | 2021-08-10 | 浙江利丰电器股份有限公司 | Silver-copper alloy material for manufacturing commutator copper sheet |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105344950A (en) * | 2015-11-02 | 2016-02-24 | 铜陵精选线材有限责任公司 | Production process of high-wear-resistance high-conductivity silver-copper alloy rod |
| CN106311788A (en) * | 2016-08-22 | 2017-01-11 | 徐高磊 | Production process of copper-silver alloy profile |
| CN106521231A (en) * | 2016-12-07 | 2017-03-22 | 常州恒丰特导股份有限公司 | High strength silver copper alloy conductor and preparation process thereof |
| CN107552586A (en) * | 2017-08-15 | 2018-01-09 | 徐高杰 | A kind of electric production technology with ultra-fine oxygen-free copper Silver alloy wire |
| CN107586975A (en) * | 2017-09-05 | 2018-01-16 | 浙江力博实业股份有限公司 | A kind of production method of copper chromium zirconium continuous up-casting |
-
2019
- 2019-07-19 CN CN201910653022.0A patent/CN110385353B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105344950A (en) * | 2015-11-02 | 2016-02-24 | 铜陵精选线材有限责任公司 | Production process of high-wear-resistance high-conductivity silver-copper alloy rod |
| CN106311788A (en) * | 2016-08-22 | 2017-01-11 | 徐高磊 | Production process of copper-silver alloy profile |
| CN106521231A (en) * | 2016-12-07 | 2017-03-22 | 常州恒丰特导股份有限公司 | High strength silver copper alloy conductor and preparation process thereof |
| CN107552586A (en) * | 2017-08-15 | 2018-01-09 | 徐高杰 | A kind of electric production technology with ultra-fine oxygen-free copper Silver alloy wire |
| CN107586975A (en) * | 2017-09-05 | 2018-01-16 | 浙江力博实业股份有限公司 | A kind of production method of copper chromium zirconium continuous up-casting |
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Effective date of registration: 20201021 Address after: 312000 flat water capacity in Zhejiang province Shaoxing city Keqiao Town Industrial Park Bo Applicant after: ZHEJIANG LIBO HOLDING GROUP Co.,Ltd. Applicant after: Shaoxing Libo Technology Co.,Ltd. Address before: 312030, Zhejiang province Shaoxing city Keqiao District Ping Town Industrial Park Applicant before: Shaoxing Libo Technology Co.,Ltd. |
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