CN110076209A - A kind of preparation method of copper for relay band - Google Patents
A kind of preparation method of copper for relay band Download PDFInfo
- Publication number
- CN110076209A CN110076209A CN201910391923.7A CN201910391923A CN110076209A CN 110076209 A CN110076209 A CN 110076209A CN 201910391923 A CN201910391923 A CN 201910391923A CN 110076209 A CN110076209 A CN 110076209A
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- copper
- passes
- copper bar
- copper strips
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Classifications
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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
- B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Continuous Casting (AREA)
Abstract
The present invention provides a kind of preparation method of copper for relay band, using continuous up-casting copper bar, aligning, purging, polishing, second of purging, extrusion forming, cooling, for the second time polish, batch, the first passes, annealing, the second passes, cutting, deburring technique；The tensile strength for preparing copper strips is 300-320MPa, and elongation 10-15%, conductivity is greater than 100%IACS.
Description
Technical field
The present invention relates to a kind of preparation method of nonferrous materials more particularly to a kind of preparation sides of copper for relay band
Method.
Background technique
Relay is a kind of electric control device, is usually applied in automation control circuit, is played in circuit automatic
The effects of adjusting, safeguard protection, conversion circuit.From the point of view of China relay application field, communication and Industry Control, household electrical appliances and vapour
Vehicle is relay biggest market.To some degree, the automation that the material of relay industry and technical level reflect
It is horizontal.
The main relay such as China's communication, automobile, industry control, household electrical appliances consumes Industry Quick Development, has pulled domestic relay
The demand of device industry, the competition of relay industry from the competition of past volume production, developed to new type of relay and critical material,
The competition of the key foundations component such as special equipment research and development manufacture, therefore development is adapted to the Cu alloy material of high-end relay industry
Just seem particularly significant, do not require nothing more than Cu alloy material has outstanding performance on electric conductivity, and has high-fire resistance, is bent into
Type and outstanding lustrous surface and flatness.
Summary of the invention
The purpose of the present invention is to provide a kind of preparation method of copper for relay band, using continuous up-casting copper bar, aligning,
Purging, second of purging, extrusion forming, cooling, is polished for the second time, is batched, the first passes, annealing, the second passage polishing
The technique of rolling, cutting, deburring；The copper content of the copper strips of preparation is greater than 99.99%, and oxygen content is less than 3ppm, with a thickness of 1.0-
2.0mm, thickness longitudinal tolerance are ± 0.02mm, and thickness transverse direction tolerance is ± 0.002mm, width 10-300mm, width tolerance
For ± 0.10mm, every meter of side camber degree of copper strips is less than 1mm, and the tensile strength of copper strips is 300-320MPa, elongation 10-
15%, conductivity is greater than 100%IACS.
In order to achieve the above object, the technical scheme is that
(1) continuous up-casting copper bar: power frequency continuous up-casting furnace is used, is launched after Cu-CATH-1 is dried into smelting apparatus
In, smelting apparatus includes smelting furnace, compartment, holding furnace three parts composition, and wherein melting furnace temperature is 1150-1200 DEG C, heat preservation
Furnace temperature is 1100-1150 DEG C, and compartment is equipped with online depassing unit, is filled with by online depassing unit into copper liquid
99.996% argon gas, and by controlled rotation graphite shaft and rotor, argon gas is pressed into copper liquid and is dispersed as micro-bubble,
It is uniformly dispersed in it in copper liquid, thus achieve the purpose that degasification, deoxidation, source outlet pressure 0.5MPa, flow 0.5~
1.0Nm3/ h, rotor speed control is in 150~200r/min, by online depassing unit, is less than the oxygen content in copper liquid
3ppm, copper content are greater than 99.99%.
Smelting furnace is covered using charcoal, and compartment, holding furnace are covered using graphite flakes, using traction link seat in holding furnace
Continuous up-casting copper bar, copper bar pitch are 2.5~3.0mm, and the speed of continuous up-casting is 550-600mm/min, stop Lapie lead for
50%-55%, using fine pith, greatly stop Lapie lead improve copper bar surface quality, avoid copper bar from breaking.Continuous up-casting diameter Ф
30mm, for the cooling circulating water inflow temperature of crystallizer less than 35 DEG C, the cooling circulating water inflow and outflow temperature difference of crystallizer is small
In 8 DEG C.
The crystallizer that continuous up-casting uses be graphite material, meanwhile, internal surface of crystallizer chromium plating, chrome layer with a thickness of
0.05~0.2mm.
(2) align: curved copper bar internal residual stress is released by Ф 30mm oxygen-free copper bar by straightener,
Eliminate the shape defect of copper bar.
(3) it purges: using the compressed air of 0.2~0.3MPa, the pollutants such as the dust on copper bar surface being purged to clean, guarantor
Demonstrate,prove the surface quality of oxygen-free copper bar cleaning.
(4) it polishes: being polished copper bar surface using steel brush.
(5) it purges for second: using the compressed air of 0.2~0.3MPa, copper bar surface being purged；
(6) expansion deformation channel, gasket and the soft state copper rod of extrusion forming of mold extrusion forming: are passed sequentially through；It squeezes
Molding speed is 5m/min, and temperature is greater than 750 DEG C, and the diameter of the copper rod of extrusion forming preparation is 30mm.
(7) cooling: the copper strip billet of extrusion forming is by the anti-oxidation pipe of vacuum, using the mixing of the alcohol and water of 10-20%
Liquid is cooled down, and is cooled to 30 DEG C~50 DEG C；
(8) it second polishes: the method combined using rough polishing and essence throwing, the roughness of copper strip billet is reached 0.05~
0.15μm；Wherein rough polishing carries out polishing pretreatment using the abrasive brush of 100~300 mesh, and essence throws the nonwoven fabric of 2000~3000 mesh
Brush roll；
(9) it batches: copper strip billet being subjected to no-core winder, wherein 500~600mm of internal diameter, 1500~2500mm of outer diameter.
(10) first passes: the working modulus of the first passes be 50-80%, the purpose of the first passes be by
Copper strips thickness is thinned, and improves the intensity and hardness of copper strips, and the thickness transverse direction tolerance of copper strips is made to be less than ± 0.002mm.First passage
Mill speed be 150-200m/min, rolling forward pull is 16-18KN, and rolling backward pull is 20-25KN, and when rolling uses
5% emulsion is cooling, is purged using the compressed air of 0.3-0.5MPa, and emulsion is purged completely, pickling is not needed.
(11) it anneals: the copper strips after the first passes is annealed, annealing temperature is 350 DEG C, keeps the temperature 6 hours.It moves back
Gas shield is used when fiery, using the mixed gas of 25% hydrogen and 75% nitrogen.
(12) second passes: the working modulus of the second passes is respectively 20-30%, the purpose of the second passes
It is the template for controlling copper strips, improves the intensity and hardness of copper strips, the thickness transverse direction tolerance of copper strips is made to be less than ± 0.002mm.Second
The mill speed of passage is 80-100m/min, and rolling forward pull is 10-12KN, and rolling backward pull is 15-16KN.It rolls for the second time
It is cooling using 7% emulsion when processed, it is purged using the compressed air of 0.5-0.6MPa, emulsion is purged completely, no
Need pickling.
(13) cut: blade drafts is the 50% of copper strips thickness when cutting, and the gap of slitting blade is copper strips thickness
10%.
(14) deburring: carrying out deburring for the copper strips after cutting, and copper strips is passed through leveling, rolling, scraping, extruding, frosted etc.
The defects of wedge angle, burr, flange of copper belt part, is removed by step.
The beneficial effects of the present invention are:
1. the copper for relay band of preparation is had excellent performance, wherein copper content is greater than 99.99%, and oxygen content is less than 3ppm, thick
Degree be 1.0-2.0mm, thickness longitudinal tolerance be ± 0.02mm, thickness transverse direction tolerance be ± 0.002mm, width 10-300mm,
Width tolerance is ± 0.10mm, and every meter of side camber degree of copper strips is less than 1mm, and the tensile strength of copper strips is 300-320MPa, is stretched
Long rate is 10-15%, and conductivity is greater than 100%IACS.
2. the present invention uses high-purity copper weld pool, continuous up-casting copper bar, aligning, purging, polishing, purges, is squeezed into for the second time
Type, cooling, polish, batch for the second time, the first passes, annealing, the second passes, cutting, deburring technique, do not need
The techniques such as pickling, copper strip billet milling face, have saved a large amount of time and energy consumption.
Specific embodiment
A kind of preparation method of copper for relay band comprises the concrete steps that:
(1) continuous up-casting copper bar: power frequency continuous up-casting furnace is used, is launched after Cu-CATH-1 is dried into smelting apparatus
In, smelting apparatus includes smelting furnace, compartment, holding furnace three parts composition, and wherein melting furnace temperature is 1180 DEG C, keeps the temperature furnace temperature
It is 1150 DEG C, compartment is equipped with online depassing unit, 99.996% argon gas is filled with into copper liquid by online depassing unit, and
By controlled rotation graphite shaft and rotor, argon gas is pressed into copper liquid and is dispersed as micro-bubble, is uniformly dispersed in it
In copper liquid, thus achieve the purpose that degasification, deoxidation, source outlet pressure 0.5MPa, 0.5~1.0Nm of flow3/ h, rotor speed
Control is in 150~200r/min, by online depassing unit, so that the oxygen content in copper liquid is less than 3ppm, copper content is greater than
99.999%.
Smelting furnace is covered using charcoal, and compartment, holding furnace are covered using graphite flakes, using traction link seat in holding furnace
Continuous up-casting copper bar, copper bar pitch are 2.5~3.0mm, and the speed of continuous up-casting is 550-600mm/min, stop Lapie lead for
50%-55%, using fine pith, greatly stop Lapie lead improve copper bar surface quality, avoid copper bar from breaking.Continuous up-casting diameter Ф
30mm, for the cooling circulating water inflow temperature of crystallizer less than 35 DEG C, the cooling circulating water inflow and outflow temperature difference of crystallizer is small
In 8 DEG C.
The crystallizer that continuous up-casting uses be graphite material, meanwhile, internal surface of crystallizer chromium plating, chrome layer with a thickness of
0.05~0.2mm.
(2) align: curved copper bar internal residual stress is released by Ф 30mm oxygen-free copper bar by straightener,
Eliminate the shape defect of copper bar.
(3) it purges: using the compressed air of 0.3MPa, the pollutants such as the dust on copper bar surface being purged to clean, guarantee nothing
The surface quality of oxygen copper bar cleaning.
(4) it polishes: being polished copper bar surface using steel brush.
(5) it purges for second: using the compressed air of 0.3MPa, copper bar surface being purged；
(6) expansion deformation channel, gasket and the soft state copper rod of extrusion forming of mold extrusion forming: are passed sequentially through；It squeezes
Molding speed is 5m/min, and temperature is greater than 750 DEG C, and the diameter of the copper rod of extrusion forming preparation is 30mm.
(7) cooling: the copper strip billet of extrusion forming is by the anti-oxidation pipe of vacuum, using the mixing of the alcohol and water of 10-20%
Liquid is cooled down, and is cooled to 30 DEG C~50 DEG C；
(8) it second polishes: the method combined using rough polishing and essence throwing, the roughness of copper strip billet is reached 0.05~
0.15μm；Wherein rough polishing carries out polishing pretreatment using the abrasive brush of 100~300 mesh, and essence throws the nonwoven fabric of 2000~3000 mesh
Brush roll；
(9) it batches: copper strip billet being subjected to no-core winder, wherein 500~600mm of internal diameter, 1500~2500mm of outer diameter.
(10) first passes: the working modulus of the first passes be 50-80%, the purpose of the first passes be by
Copper strips thickness is thinned, and improves the intensity and hardness of copper strips, and the thickness transverse direction tolerance of copper strips is made to be less than ± 0.002mm.First passage
Mill speed be 150-200m/min, rolling forward pull is 16-18KN, and rolling backward pull is 20-25KN, and when rolling uses
5% emulsion is cooling, is purged using the compressed air of 0.3-0.5MPa, and emulsion is purged completely, pickling is not needed.
(11) it anneals: the copper strips after the first passes is annealed, annealing temperature is 350 DEG C, keeps the temperature 6 hours.It moves back
Gas shield is used when fiery, using the mixed gas of 25% hydrogen and 75% nitrogen.
(12) second passes: the working modulus of the second passes is respectively 20-30%, the purpose of the second passes
It is the template for controlling copper strips, improves the intensity and hardness of copper strips, the thickness transverse direction tolerance of copper strips is made to be less than ± 0.002mm.Second
The mill speed of passage is 80-100m/min, and rolling forward pull is 10-12KN, and rolling backward pull is 15-16KN.It rolls for the second time
It is cooling using 7% emulsion when processed, it is purged using the compressed air of 0.5-0.6MPa, emulsion is purged completely, no
Need pickling.
(13) cut: blade drafts is the 50% of copper strips thickness when cutting, and the gap of slitting blade is copper strips thickness
10%.
(14) deburring: carrying out deburring for the copper strips after cutting, and copper strips is passed through leveling, rolling, scraping, extruding, frosted etc.
The defects of wedge angle, burr, flange of copper belt part, is removed by step.
The copper content of the copper for relay band of this example preparation is greater than 99.99%, and oxygen content is less than 3ppm, with a thickness of 1.0-
2.0mm, thickness longitudinal tolerance are ± 0.02mm, and thickness transverse direction tolerance is ± 0.002mm, width 10-300mm, width tolerance
For ± 0.10mm, every meter of side camber degree of copper strips is less than 1mm, and the tensile strength of copper strips is 300-320MPa, elongation 10-
15%, conductivity is greater than 100%IACS.
Claims (1)
1. a kind of preparation method of copper for relay band, it is characterised in that: the preparation method be using continuous up-casting copper bar,
Aligning purging, polishing, second purging, extrusion forming, cooling, is polished for the second time, is batched, the first passes, annealing, the
Two passes, cutting, deburring technique；The copper content of the copper strips of preparation is greater than 99.99%, and oxygen content is less than 3ppm, thickness
For 1.0-2.0mm, thickness longitudinal tolerance is ± 0.02mm, and thickness transverse direction tolerance is ± 0.002mm, width 10-300mm, wide
Degree tolerance is ± 0.10mm, and every meter of side camber degree of copper strips is less than 1mm, and the tensile strength of copper strips is 300-320MPa, elongation
Rate is 10-15%, and conductivity is greater than 100%IACS；
The preparation method specifically includes:
(1) continuous up-casting copper bar: using power frequency continuous up-casting furnace, launch after Cu-CATH-1 is dried into smelting apparatus, melts
Refining device includes smelting furnace, compartment, holding furnace three parts composition, and wherein melting furnace temperature is 1150-1200 DEG C, keeps the temperature furnace temperature
It is 1100-1150 DEG C, compartment is equipped with online depassing unit, is filled with 99.996% argon into copper liquid by online depassing unit
Gas, and by controlled rotation graphite shaft and rotor, argon gas is pressed into copper liquid and is dispersed as micro-bubble, divides it uniformly
It is dispersed in copper liquid, thus achieve the purpose that degasification, deoxidation, source outlet pressure 0.5MPa, 0.5~1.0Nm of flow3/ h, rotor
Revolving speed is controlled in 150~200r/min, by online depassing unit, the oxygen content in copper liquid is made to be less than 3ppm；
Smelting furnace using charcoal cover, compartment, holding furnace using graphite flakes covering, using traction link seat in holding furnace on draw
Continuous casting copper bar, copper bar pitch are 2.5~3.0mm, and the speed of continuous up-casting is 550-600mm/min, stops Lapie and leads as 50%-
55%, using fine pith, greatly stop Lapie lead improve copper bar surface quality, avoid copper bar from breaking.Continuous up-casting diameter Ф 30mm, knot
The cooling circulating water inflow temperature of brilliant device is less than 35 DEG C, and the cooling circulating water inflow and outflow temperature difference of crystallizer is less than 8 DEG C；
The crystallizer that continuous up-casting uses is graphite material, meanwhile, internal surface of crystallizer chromium plating, chrome layer with a thickness of 0.05~
0.2mm；
(2) align: curved copper bar internal residual stress is released by Ф 30mm oxygen-free copper bar by straightener, is eliminated
The shape defect of copper bar；
(3) it purges: using the compressed air of 0.2~0.3MPa, the pollutants such as the dust on copper bar surface being purged to clean, guarantee nothing
The surface quality of oxygen copper bar cleaning；
(4) it polishes: being polished copper bar surface using steel brush；
(5) it purges for second: using the compressed air of 0.2~0.3MPa, copper bar surface being purged；
(6) expansion deformation channel, gasket and the soft state copper rod of extrusion forming of mold extrusion forming: are passed sequentially through；Extrusion forming
Speed be 5m/min, temperature be greater than 750 DEG C, extrusion forming preparation copper rod diameter be 30mm；
(7) cooling: the copper strip billet of extrusion forming by the anti-oxidation pipe of vacuum, using 10-20% alcohol and water mixed liquor into
Row cooling, is cooled to 30 DEG C~50 DEG C；
(8) polish for second: the roughness of copper strip billet is reached 0.05~0.15 μ by the method combined using rough polishing and essence throwing
m；Wherein rough polishing carries out polishing pretreatment using the abrasive brush of 100~300 mesh, and essence throws the nonwoven fabric brush roll of 2000~3000 mesh；
(9) it batches: copper strip billet being subjected to no-core winder, wherein 500~600mm of internal diameter, 1500~2500mm of outer diameter；
(10) first passes: the working modulus of the first passes is 50-80%, and the purpose of the first passes is by copper strips
Thickness is thinned, and improves the intensity and hardness of copper strips, so that the thickness transverse direction tolerance of copper strips is less than ± 0.002mm, the first passage is rolled
Speed processed is 150-200m/min, and rolling forward pull is 16-18KN, and rolling backward pull is 20-25KN, using 5% when rolling
Emulsion is cooling, is purged using the compressed air of 0.3-0.5MPa, and emulsion is purged completely, pickling is not needed；
(11) it anneals: the copper strips after the first passes is annealed, annealing temperature is 350 DEG C, 6 hours is kept the temperature, when annealing
Using gas shield, using the mixed gas of 25% hydrogen and 75% nitrogen；
(12) second passes: the working modulus of the second passes is respectively 20-30%, and the purpose of the second passes is control
The template of copper strips processed improves the intensity and hardness of copper strips, and the thickness transverse direction tolerance of copper strips is made to be less than ± 0.002mm.Second passage
Mill speed be 80-100m/min, rolling forward pull be 10-12KN, rolling backward pull be 15-16KN.When second of rolling
It is cooling using 7% emulsion, it is purged using the compressed air of 0.5-0.6MPa, emulsion is purged completely, is not needed
Pickling；
(13) cut: blade drafts is the 50% of copper strips thickness when cutting, and the gap of slitting blade is the 10% of copper strips thickness；
(14) deburring: carrying out deburring for the copper strips after cutting, by copper strips by leveling, rolling, scraping, extruding, frosted,
The defects of wedge angle, burr, flange of copper belt part, is removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910391923.7A CN110076209A (en) | 2019-05-13 | 2019-05-13 | A kind of preparation method of copper for relay band |
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|---|---|---|---|
| CN201910391923.7A CN110076209A (en) | 2019-05-13 | 2019-05-13 | A kind of preparation method of copper for relay band |
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ID=67419769
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514503A (en) * | 2019-10-14 | 2019-11-29 | 上海宝冶工程技术有限公司 | A kind of preparation method of pure copper samples |
| CN112570486A (en) * | 2020-10-14 | 2021-03-30 | 陕西斯瑞新材料股份有限公司 | CuCrZr plate strip metal rolling process |
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| CN107999560A (en) * | 2017-12-01 | 2018-05-08 | 浙江力博实业股份有限公司 | The preparation method of breaker copper strips |
| CN108893646A (en) * | 2018-07-10 | 2018-11-27 | 浙江力博实业股份有限公司 | A kind of preparation method of electrode material copper chromium zirconium-niobium alloy |
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| CN105020565A (en) * | 2015-07-30 | 2015-11-04 | 绍兴市力博电气有限公司 | Copper-silver alloy strip for reverser and production process of copper-silver alloy strip |
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| CN108893646A (en) * | 2018-07-10 | 2018-11-27 | 浙江力博实业股份有限公司 | A kind of preparation method of electrode material copper chromium zirconium-niobium alloy |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514503A (en) * | 2019-10-14 | 2019-11-29 | 上海宝冶工程技术有限公司 | A kind of preparation method of pure copper samples |
| CN112570486A (en) * | 2020-10-14 | 2021-03-30 | 陕西斯瑞新材料股份有限公司 | CuCrZr plate strip metal rolling process |
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Application publication date: 20190802 |