CN107999560A - The preparation method of breaker copper strips - Google Patents

The preparation method of breaker copper strips Download PDF

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Publication number
CN107999560A
CN107999560A CN201711248541.6A CN201711248541A CN107999560A CN 107999560 A CN107999560 A CN 107999560A CN 201711248541 A CN201711248541 A CN 201711248541A CN 107999560 A CN107999560 A CN 107999560A
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China
Prior art keywords
copper
copper strips
continuous
preparation
thickness
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CN201711248541.6A
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Chinese (zh)
Inventor
徐高磊
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Zhejiang Libo Industrial Ltd By Share Ltd
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Zhejiang Libo Industrial Ltd By Share Ltd
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Priority to CN201711248541.6A priority Critical patent/CN107999560A/en
Publication of CN107999560A publication Critical patent/CN107999560A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape

Abstract

The present invention provides a kind of preparation method of breaker copper strips, using continuous up-casting, two passages are continuously extruded, two passes, the technique of cutting;The copper content of the copper strips of preparation is more than 99.99%, oxygen content is less than 3ppm, thickness is 3.0 8.0mm, and thickness longitudinal tolerance is ± 0.02mm, and thickness transverse direction tolerance is ± 0.002mm, width is 50 150mm, width tolerance is ± 0.10mm, and every meter of the side camber degree of copper strips is less than 1mm, and the tensile strength of copper strips is 350 380MPa, elongation is 5 10%, and conductivity is more than 100%IACS.

Description

The preparation method of breaker copper strips
Technical field
The present invention relates to a kind of preparation method of breaker copper strips
Background technology
Breaker is the electric current for referring to close, carry and cut-off under normal loop condition and can close, when defined Interior carrying and the switching device for cut-offfing the electric current under abnormal loop condition.Breaker can be used to distribute electric energy, infrequently open Dynamic asynchronous motor, protects the implementations such as power circuit and motor, when serious overload or short-circuit and under-voltage occurs in they The energy automatic shutdown circuit when failure, its function is equivalent to Fuse switch and the combination for crossing underheat relay etc., Er Qie Parts need not be generally changed after disjunction fault current.Have been widely used at present.The thickness of breaker copper strips Scope is 3-8mm, has special requirement in terms of electric conductivity, mechanical property, flatness.
The content of the invention
It is an object of the invention to provide a kind of preparation method of breaker copper strips, is connected using continuous up-casting, two passages Continuous extruding, two passes, the technique of cutting;The copper content of the copper strips of preparation is more than 99.99%, and oxygen content is less than 3ppm, thick To spend for 3.0-8.0mm, thickness longitudinal tolerance is ± 0.02mm, and thickness transverse direction tolerance is ± 0.002mm, width 50-150mm, Width tolerance is ± 0.10mm, and every meter of the side camber degree of copper strips is less than 1mm, and the tensile strength of copper strips is 350-380MPa, is stretched Long rate is 5-10%, and conductivity is more than 100%IACS.
In order to achieve the above object, the technical scheme is that:
Using power frequency continuous up-casting stove, launched after Cu-CATH-1 is dried into smelting apparatus, smelting apparatus includes molten Furnace, compartment, holding furnace three parts composition, wherein melting furnace temperature is 1150-1200 DEG C, and insulation furnace temperature is 1100-1150 DEG C, compartment is provided with online depassing unit, is filled with 99.996% argon gas into copper liquid by online depassing unit, and by by The rotation graphite shaft and rotor of control, argon gas is pressed into copper liquid and is dispersed as micro-bubble, it is uniformly dispersed in copper liquid, So as to achieve the purpose that degasification, deoxidation, source outlet pressure 0.5MPa, 0.5~1.0Nm of flow3/ h, rotor speed control exist 150~200r/min, by online depassing unit, makes the oxygen content in copper liquid be less than 3ppm.
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, it is big stop Lapie and lead to improve copper bar surface quality, avoid copper bar from breaking.Continuous up-casting diameter Ф 30mm, the cooling circulating water inflow temperature of crystallizer are less than 35 DEG C, and the cooling circulating water water inlet of crystallizer and leaving water temperature difference are small In 8 DEG C.
The crystallizer that continuous up-casting uses is graphite material, meanwhile, internal surface of crystallizer chromium plating, the thickness of chrome layer is 0.05~0.2mm.
First time passage continuous extruder rotating speed is 3-3.5r/min, continuously extruded temperature be more than 750 DEG C, it is continuously extruded Flash rate is controlled in 8-10%, a diameter of 30mm of the copper rod of continuously extruded preparation.
Second of passage continuous extruder rotating speed is 3-3.5r/min, continuously extruded temperature be more than 750 DEG C, it is continuously extruded The control of flash rate is less than ± 0.008mm in 8-10%, the copper strip billet thickness transverse direction tolerance of continuously extruded preparation.
The working modulus of two passes is respectively 30-50% and 10-15%, and the purpose of the first passes is that copper strips is thick Degree is thinned, and improves the intensity and hardness of copper strips, and the purpose of the second passes is to control the template of copper strips, makes the thickness of copper strips horizontal It is less than ± 0.002mm to tolerance.The mill speed of first passage is 150-200m/min, and rolling forward pull is 16-18KN, rolling Backward pull is 20-25KN, and the mill speed of the second passage is 80-100m/min, and rolling forward pull is 10-12KN, rolls post-tensioning Power is 15-16KN.Cooled down using 2% emulsion during second of rolling, purged using the compressed air of 0.3-0.5MPa, It is emulsion purging is clean, it is not necessary to pickling.
Blade drafts is the 50% of copper strips thickness during cutting, and the gap of slitting blade is the 10% of copper strips thickness.
The beneficial effects of the invention are as follows:
1. the copper content of copper strips is more than 99.99%, oxygen content is less than 3ppm, thickness 3.0-8.0mm, thickness longitudinal tolerance For ± 0.02mm, thickness transverse direction tolerance is ± 0.002mm, width 50-150mm, and width tolerance is ± 0.10mm, the side of copper strips Every meter of side curvature is less than 1mm, and the tensile strength of copper strips is 350-380MPa, elongation 5-10%, conductivity be more than 100%IACS.
2. the preparation method of the present invention is energy-efficient, using continuous up-casting, two passages are continuously extruded, two passes, point The technique cut, substantial amounts of time and energy consumption have been saved than techniques such as traditional ingot casting, hot rolling, multi- pass rolling, annealing, pickling.
Embodiment
A kind of preparation method of breaker copper strips, using power frequency continuous up-casting stove, is launched after Cu-CATH-1 is dried Into in smelting apparatus, smelting apparatus includes smelting furnace, compartment, holding furnace three parts composition, and wherein melting furnace temperature is 1200 DEG C, It is 1150 DEG C to keep the temperature furnace temperature, and compartment is provided 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 set to be uniformly dispersed in copper liquid, so that achieve the purpose that degasification, deoxidation, source outlet pressure 0.5MPa, flow 0.7Nm3/ H, rotor speed control 180r/min, by online depassing unit, make the oxygen content in copper liquid be less than 3ppm.
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 3.0mm, and the speed of continuous up-casting is 550mm/min, stop Lapie and lead as 55%, use is small Pitch, it is big stop Lapie and lead to improve copper bar surface quality, avoid copper bar from breaking.Continuous up-casting diameter Ф 30mm, the cooling of crystallizer Recirculated water inflow temperature is less than 35 DEG C, and the cooling circulating water water inlet of crystallizer and leaving water temperature difference are less than 8 DEG C.
The crystallizer that continuous up-casting uses is graphite material, meanwhile, internal surface of crystallizer chromium plating, the thickness of chrome layer is 0.05mm。
First time passage continuous extruder rotating speed is 3.5r/min, continuously extruded temperature be more than 750 DEG C, it is continuously extruded to overflow Material rate is controlled in 8-10%, a diameter of 30mm of the copper rod of continuously extruded preparation.
Second of passage continuous extruder rotating speed is 3r/min, and continuously extruded temperature is the continuously extruded flash more than 750 DEG C Rate is controlled in 8-10%, and the copper strip billet of continuously extruded preparation is 12 × 120mm, and thickness transverse direction tolerance is less than ± 0.008mm.
The working modulus of two passes is respectively 50% and 10%, and the thickness of copper strips is 6mm after the first passes, and second The thickness of copper strips is 4.5mm after secondary rolling, and thickness longitudinal tolerance is ± 0.01mm, the thickness transverse direction tolerance+0.001mm of copper strips. The mill speed of first passage is 150m/min, and rolling forward pull is 18KN, and rolling backward pull is 25KN, the rolling of the second passage Speed is 80m/min, and rolling forward pull is 10KN, and rolling backward pull is 15KN.Second cold using 2% emulsion when rolling But, purged, emulsion is purged clean, it is not necessary to pickling using the compressed air of 0.3-0.5MPa.
Blade drafts is the 50% of copper strips thickness during cutting, and the gap of slitting blade is the 10% of copper strips thickness, cutting The width of copper strips is 100mm afterwards, and width tolerance is ± 0.05mm, and every meter of side camber degree is less than 1mm.
The copper content of copper strips prepared by this example is more than 99.99%, and oxygen content is less than 3ppm, thickness 4.5mm, and thickness is indulged It is ± 0.01mm to tolerance, thickness transverse direction tolerance is ± 0.001mm, width 50-150mm, and width tolerance is ± 0.10mm, copper Every meter of the side camber degree of band is less than 1mm, and the tensile strength of copper strips is 350-380MPa, elongation 5-10%, and conductivity is More than 100%IACS.

Claims (6)

1. a kind of preparation method of breaker copper strips, it is characterised in that using continuous up-casting, two passages are continuously extruded, two passages Rolling, the technique of cutting;The copper content of the copper strips of preparation is more than 99.99%, and oxygen content is less than 3ppm, thickness 3.0-8.0mm, Thickness longitudinal tolerance is ± 0.02mm, and thickness transverse direction tolerance is ± 0.002mm, width 50-150mm, width tolerance for ± 0.10mm, every meter of the side camber degree of copper strips are less than 1mm, and the tensile strength of copper strips is 350-380MPa, elongation 5-10%, Conductivity is more than 100%IACS.
A kind of 2. preparation method of breaker copper strips as claimed in claim 1, it is characterised in that:The continuous up-casting step In rapid, using power frequency continuous up-casting stove, launched after Cu-CATH-1 is dried into smelting apparatus, smelting apparatus includes melting Stove, compartment, holding furnace three parts composition, wherein melting furnace temperature are 1150-1200 DEG C, and insulation furnace temperature is 1100-1150 DEG C, Compartment is provided with online depassing unit, is filled with 99.996% argon gas into copper liquid by online depassing unit, and by controlled Rotation graphite shaft and rotor, by argon gas be pressed into copper liquid in and be dispersed as micro-bubble, it is uniformly dispersed in copper liquid, from And achieve the purpose that degasification, deoxidation, source outlet pressure 0.5MPa, 0.5~1.0Nm of flow3/ h, rotor speed control is 150 ~200r/min, by online depassing unit, makes the oxygen content in copper liquid be less than 3ppm;Smelting furnace is covered using charcoal, compartment, Holding furnace is covered using graphite flakes, using traction link seat in holding furnace continuous up-casting copper bar, copper bar pitch for 2.5~ 3.0mm, the speed of continuous up-casting is 550-600mm/min, stops Lapie and leads as 50%-55%, using fine pith, big stop Lapie and leads Copper bar surface quality is improved, avoids copper bar from breaking.Continuous up-casting diameter Ф 30mm, the cooling circulating water inflow temperature of crystallizer are small In 35 DEG C, the cooling circulating water water inlet of crystallizer and leaving water temperature difference are less than 8 DEG C;The crystallizer that continuous up-casting uses is graphite material Matter, meanwhile, internal surface of crystallizer chromium plating, the thickness of chrome layer is 0.05~0.2mm.
A kind of 3. preparation method of breaker copper strips as claimed in claim 1, it is characterised in that:Two passages are continuous In pressing steps, first time passage continuous extruder rotating speed is 3-3.5r/min, and continuously extruded temperature is more than 750 DEG C, continuously The control of flash rate is extruded in 8-10%, a diameter of 30mm of the copper rod of continuously extruded preparation;Second of passage continuous extruder turns Speed is 3-3.5r/min, and continuously extruded temperature is more than 750 DEG C, and continuously extruded flash rate control is in 8-10%, continuously extruded system Standby copper strip billet thickness transverse direction tolerance is less than ± 0.008mm.
A kind of 4. preparation method of breaker copper strips as claimed in claim 1, it is characterised in that:Two passes In step, the working modulus of two passes is respectively 30-50% and 10-15%, and the purpose of the first passes is that copper strips is thick Degree is thinned, and improves the intensity and hardness of copper strips, and the purpose of the second passes is to control the template of copper strips, makes the thickness of copper strips horizontal It is less than ± 0.002mm to tolerance.
A kind of 5. preparation method of breaker copper strips as claimed in claim 1, it is characterised in that:Two passes In step, the mill speed of the first passage is 150-200m/min, and rolling forward pull is 16-18KN, and rolling backward pull is 20- 25KN, the mill speed of the second passage is 80-100m/min, and rolling forward pull is 10-12KN, and rolling backward pull is 15-16KN; Cooled down during second of rolling using 2% emulsion, purged using the compressed air of 0.3-0.5MPa, emulsion is purged Totally, it is not necessary to pickling.
A kind of 6. preparation method of breaker copper strips as claimed in claim 1, it is characterised in that:In the dicing process, Blade drafts is the 50% of copper strips thickness during cutting, and the gap of slitting blade is the 10% of copper strips thickness.
CN201711248541.6A 2017-12-01 2017-12-01 The preparation method of breaker copper strips Pending CN107999560A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110076210A (en) * 2019-05-13 2019-08-02 浙江力博实业股份有限公司 A kind of preparation method of relay high-fire resistance copper strips
CN110076209A (en) * 2019-05-13 2019-08-02 浙江力博实业股份有限公司 A kind of preparation method of copper for relay band
CN110076211A (en) * 2019-05-13 2019-08-02 浙江力博实业股份有限公司 A kind of preparation method of the high Erichsen number copper strips of heat exchanger
CN110090875A (en) * 2019-05-13 2019-08-06 浙江力博实业股份有限公司 A kind of preparation method of heat exchanger copper strips
CN110385351A (en) * 2019-07-17 2019-10-29 绍兴市力博科技有限公司 A kind of production method of section copper strip
CN110385350A (en) * 2019-07-17 2019-10-29 绍兴市力博科技有限公司 A kind of production method of abnormal shape copper alloy belt

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998023398A1 (en) * 1996-11-29 1998-06-04 Bicc Public Limited Company Manufacture of copper wire
CN101134276A (en) * 2007-09-29 2008-03-05 绍兴市力博电缆有限公司 Production technology of big-length oxygen-free copper stripe
CN104959396A (en) * 2015-08-04 2015-10-07 绍兴市力博电气有限公司 Production process of copper strip for composite contact material
CN106001160A (en) * 2016-08-05 2016-10-12 徐高磊 Production technology of high-purity and high-conductivity oxygen-free copper strips
CN106239044A (en) * 2016-08-04 2016-12-21 徐高磊 A kind of copper strips production technology for LED support
CN107052290A (en) * 2017-03-28 2017-08-18 绍兴市力博电气有限公司 A kind of production technology of high-purity oxygen-free high conductivity type copper bar
JP6233634B2 (en) * 2012-10-25 2017-11-22 住友電気工業株式会社 Copper wire, copper wire, copper flat wire, coated copper wire, method for producing copper wire, method for producing copper wire, and method for producing copper flat wire

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998023398A1 (en) * 1996-11-29 1998-06-04 Bicc Public Limited Company Manufacture of copper wire
CN101134276A (en) * 2007-09-29 2008-03-05 绍兴市力博电缆有限公司 Production technology of big-length oxygen-free copper stripe
JP6233634B2 (en) * 2012-10-25 2017-11-22 住友電気工業株式会社 Copper wire, copper wire, copper flat wire, coated copper wire, method for producing copper wire, method for producing copper wire, and method for producing copper flat wire
CN104959396A (en) * 2015-08-04 2015-10-07 绍兴市力博电气有限公司 Production process of copper strip for composite contact material
CN106239044A (en) * 2016-08-04 2016-12-21 徐高磊 A kind of copper strips production technology for LED support
CN106001160A (en) * 2016-08-05 2016-10-12 徐高磊 Production technology of high-purity and high-conductivity oxygen-free copper strips
CN107052290A (en) * 2017-03-28 2017-08-18 绍兴市力博电气有限公司 A kind of production technology of high-purity oxygen-free high conductivity type copper bar

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
宋宝韫,等: "连续等通道角挤压制备超细晶铜", 《有色金属》 *
李建国,等: "多道次连续挤压3003铝合金的组织与性能", 《材料热处理技术》 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110076210A (en) * 2019-05-13 2019-08-02 浙江力博实业股份有限公司 A kind of preparation method of relay high-fire resistance copper strips
CN110076209A (en) * 2019-05-13 2019-08-02 浙江力博实业股份有限公司 A kind of preparation method of copper for relay band
CN110076211A (en) * 2019-05-13 2019-08-02 浙江力博实业股份有限公司 A kind of preparation method of the high Erichsen number copper strips of heat exchanger
CN110090875A (en) * 2019-05-13 2019-08-06 浙江力博实业股份有限公司 A kind of preparation method of heat exchanger copper strips
CN110385351A (en) * 2019-07-17 2019-10-29 绍兴市力博科技有限公司 A kind of production method of section copper strip
CN110385350A (en) * 2019-07-17 2019-10-29 绍兴市力博科技有限公司 A kind of production method of abnormal shape copper alloy belt
CN110385351B (en) * 2019-07-17 2021-01-19 浙江力博实业股份有限公司 Production method of special-shaped copper strip

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