CN100566885C - The production method of oxygen-free high conductivity type copper strip - Google Patents
The production method of oxygen-free high conductivity type copper strip Download PDFInfo
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- CN100566885C CN100566885C CNB2007101348341A CN200710134834A CN100566885C CN 100566885 C CN100566885 C CN 100566885C CN B2007101348341 A CNB2007101348341 A CN B2007101348341A CN 200710134834 A CN200710134834 A CN 200710134834A CN 100566885 C CN100566885 C CN 100566885C
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- belt
- oxygen
- conductivity type
- high conductivity
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 31
- 239000010949 copper Substances 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 230000008878 coupling Effects 0.000 claims abstract description 19
- 238000010168 coupling process Methods 0.000 claims abstract description 19
- 238000005859 coupling reaction Methods 0.000 claims abstract description 19
- 238000000137 annealing Methods 0.000 claims abstract description 17
- 238000002844 melting Methods 0.000 claims abstract description 16
- 230000008018 melting Effects 0.000 claims abstract description 16
- 238000005266 casting Methods 0.000 claims abstract description 15
- 238000005097 cold rolling Methods 0.000 claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 49
- PTVDYARBVCBHSL-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu] PTVDYARBVCBHSL-UHFFFAOYSA-N 0.000 claims description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 23
- 229910002804 graphite Inorganic materials 0.000 claims description 23
- 239000010439 graphite Substances 0.000 claims description 23
- 238000009413 insulation Methods 0.000 claims description 17
- 239000000498 cooling water Substances 0.000 claims description 10
- 239000003610 charcoal Substances 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 8
- 238000003723 Smelting Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005238 degreasing Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 9
- 239000001301 oxygen Substances 0.000 abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 abstract description 9
- 238000001816 cooling Methods 0.000 abstract description 8
- 230000003647 oxidation Effects 0.000 abstract description 6
- 238000007254 oxidation reaction Methods 0.000 abstract description 6
- 239000003513 alkali Substances 0.000 abstract description 4
- 238000005282 brightening Methods 0.000 abstract description 4
- 238000005554 pickling Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000004888 barrier function Effects 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 238000009749 continuous casting Methods 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 230000008595 infiltration Effects 0.000 description 4
- 238000001764 infiltration Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000002585 base Substances 0.000 description 3
- 238000005098 hot rolling Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000012372 quality testing Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The present invention relates to a kind of method of producing the copper strips of surface-brightening non-oxidation.This method comprises horizontal casting step, cold rolling step, annealing steps successively.In described horizontal casting step, adopt the disjunctor stove to carry out melting; adopted simultaneously and the coupling connection crystallizer that vapor chamber carries out the oxygen barrier protection to the made-up belt surface is set between water-cooling system and secondary water-cooling system has carried out the casting of made-up belt; therefore avoided the made-up belt surface to produce oxidation; the omission hot-rolled step directly carries out cold rolling, and need not pickling alkali cleaning step can directly anneal.The bright and clean non-oxidation of copper strip surface that adopts the present invention to produce, the energy consumption in the production process is low and pollution-free, and cost is lower, and technology controlling and process is simple relatively, is fit to the production of medium-sized and small enterprises.
Description
Technical field
The present invention relates to a kind of production method of oxygen-free high conductivity type copper strip.
Background technology
Oxygen-free high conductivity type copper is used to make the high-end product assembly, is widely used in industries such as electric power, electrical equipment, communication, electronics, computer.At present, domestic and international coloured processing enterprise produces oxygen-free high conductivity type copper strip and adopts vertical continuous casting or horizontal casting made-up belt-hot rolling-cold rolling-annealing method mostly.
The concrete technological process of this method is: melting-vertical continuous casting or horizontal casting made-up belt-heating-hot rolling-mill facing cut limit-cold rolling-level or vertical annealing-finished product is sheared packing.In hot-rolled step, also need add the intermediate annealing step sometimes.
The infiltration of oxygen takes place easily in this method in hot-rolled process, therefore need to adopt the alkali lye degreasing and go the oxide layer of strip surface with pickling in annealing process procedure, can bring environmental pollution.Simultaneously, this method requires high to equipment, inapplicable to the medium-sized and small enterprises of 100,000 tons of following scales.
Summary of the invention
The object of the present invention is to provide a kind of method of producing the high-quality copper strips of surface-brightening non-oxidation cheaply.
Technical scheme of the present invention is:
The production method of oxygen-free high conductivity type copper strip comprises the steps:
(1) horizontal casting step: the raw material electrolytic zinc-coated steel sheet is put into smelting equipment be fused into copper water, this copper water is carried out horizontal casting be cast as made-up belt;
(2) rolling step: described made-up belt is rolled into hard attitude made-up belt;
(3) annealing steps: described hard attitude made-up belt sent in the annealing device anneal, promptly make described oxygen-free high conductivity type copper strip,
Described smelting equipment is the disjunctor stove, this disjunctor stove comprises: the melting tank of adjacency, clarifier-tank and insulation pond successively, pool wall bottom between described melting tank and described clarifier-tank is provided with first passage, and the pool wall bottom between described clarifier-tank and described insulation pond is provided with second channel; Described disjunctor stove also comprises the coupling connection crystallizer that is connected with described insulation pond, and this coupling connection crystallizer comprises graphite jig and water collar, wherein, connects the runner of this graphite jig before and after described graphite jig comprises; The mould that described water collar comprises the front end that is positioned at this water collar and is used to embed described graphite jig is laid the chamber, is positioned at the waterway of described water collar inside, is used at least one first water inlet and at least one first delivery port from external communications to this waterway; What connect described water collar before and after described water collar also comprises is used to vapor chamber, a plurality of nozzles that are used to spray cooling water that are positioned at this vapor chamber port of export that copper base material is passed through, second water inlet that is positioned at described water collar, described nozzle is connected with described second water inlet, and described second water inlet is connected with the outside of described water collar; The arrival end of described vapor chamber is connected with the port of export of described runner, and the area of passage of described vapor chamber is more than or equal to the area of passage of described runner; Described copper water flow through successively described melting tank, first passage, clarifier-tank, second channel, insulation pond flow into the described runner that is arranged in described coupling connection crystallizer again; Under the effect of the cooling water that is positioned at described waterway, be frozen into red heat attitude made-up belt, this red heat attitude made-up belt is directed in the described vapor chamber and with the cooling water that sprays out from described nozzle and contacts, described cooling water is gasificated into steam and is full of in the described vapor chamber, make the surface and the air of described red heat attitude made-up belt isolated, described red heat attitude made-up belt has been cooled to room temperature when being drawn described vapor chamber; Described step (2) is cold rolling.
In described melting tank and clarifier-tank, adopt the charcoal that floats over described copper water surface that described copper water and air is isolated; In described insulation pond, adopt the graphite scale that floats over described copper water surface that described copper water and air is isolated.The thickness of described charcoal and described graphite scale is 5 centimetres～30 centimetres.The flow of described cool water shower is 4.5～8 cubic metres/hour, and the pressure of spray is 420～630 handkerchiefs.Described casting temperature is 1150～1200 degrees centigrade.Described cold rolling step comprises roughing, side cut, finish rolling.Described step (3) in turn includes the following steps: hot water cleaning and degreasing, horizontal continuous annealing.
Compared with prior art, advantage of the present invention is:
1, adopt the disjunctor furnace accretion to close the horizontal continuous casting process of coupling connection crystallizer, make made-up belt surface-brightening non-oxidation through the continuous casting step, therefore can omit heating, hot rolling in the traditional handicraft, mill step such as face, directly carry out cold rollingly, made-up belt directly is rolled into the thickness of required copper strips finished product by this cold rolling step.
2, because of having omitted heating, hot rolling, milled steps such as face, thus the infiltration of incidental oxygen in above-mentioned steps avoided simultaneously,
3, because the infiltration that does not all produce oxygen in horizontal casting and cold rolling step so need not to adopt alkali cleaning, acid pickling step before copper strips is annealed, only needs can directly send in the annealing device through the superheated water degreasing.So saved great amount of cost, and avoided the pollution of acid-base solution to bad border.
4, comprehensive above-mentioned advantage, this method small investment, production cost is low, is fit to the use of middle-size and small-size scale enterprise.
Description of drawings
Accompanying drawing 1 is a schematic flow sheet of the present invention;
Accompanying drawing 2 is the front view of coupling connection crystallizer;
Accompanying drawing 3 is the vertical view of coupling connection crystallizer;
Accompanying drawing 4 joins the A-A of crystallizer to cutaway view for coupling;
Accompanying drawing 5 is the right view of water collar;
Accompanying drawing 6 is the three-dimensional exploded view of coupling connection crystallizer;
Accompanying drawing 7 is the schematic diagram of horizontal casting unit;
Wherein: 100, coupling connection crystallizer; 110, graphite jig; 111, runner; 120, water collar; 121, vapor chamber; 122, waterway; 123, first water inlet; 124, first delivery port; 125, second water inlet; 126, nozzle; 127, mould is laid the chamber; 128, go up water collar; 129, following water collar; 200, continuous casting unit; 250, disjunctor stove; 210, melting tank; 220, clarifier-tank; 230, insulation pond; 215, first passage; 225, second channel.
The specific embodiment
Below the specific embodiment of the present invention is described:
Select for use A level cupric electrolysis plate to make raw material, this electrolytic zinc-coated steel sheet is submerged in the disjunctor stove 250 of horizontal casting unit.Described disjunctor stove 250 is separated into adjacent successively melting tank 210, clarifier-tank 220 and insulation pond 230 by pool wall.Pool wall bottom between melting tank 210 and clarifier-tank 220 is provided with first passage 215, and the pool wall bottom between clarifier-tank 220 and insulation pond 230 is provided with second channel 225.
Copper water that need not be extra is toppled over operation, and copper water can be by described first passage 215 and second channel 225 flow through successively melting tank 210, clarifier-tank 220 and insulation pond 230.
Electrolytic zinc-coated steel sheet is submerged in the described melting tank 210, and melts under the covering protection of the dried charcoal that floats on the copper water surface of 10 cm thicks.Described fusion temperature is 1085 ℃.This surface coverage has the first passage 215 inflows described clarifier-tank 220 of the copper water of dried charcoal by the bottom, furnace wall, and the copper water surface that is positioned at this clarifier-tank 220 is coated with dried charcoal equally.Dried charcoal has reproducibility, can be oxidized to gaseous products such as carbon monoxide during oxygen in contact, so pass through in the copper water of melting tank 210 and clarifier-tank 220 oxygen-free substantially.
Copper water through described deoxidation deaeration step flows in the insulation pond 230 by described second channel 225.
The graphite scale of floating 10 cm thicks of having an appointment of the copper water surface in this insulation pond 230.The graphite scale can be tight cover the copper water surface, make the thorough secluding air of copper water, avoided the infiltration of oxygen fully, further play phlogistication simultaneously.The graphite scale at high temperature its surface also can with airborne oxygen generation redox reaction, oxygen expenditure is fallen, avoided oxygen further to go deep into copper water inside.
Adopt charcoal and the graphite scale method that copper water and air is isolated generally to be used in the technology of up-drawing method production anaerobic glitter copper lever; the present invention is applied in this method in the production of oxygen-free high conductivity type copper broadband base first; therefore in melting step of the present invention, need not to adopt neutral gas or producer gas that smelting equipment is carried out seal protection; control of process condition is simpler, saves the energy that is used to produce protective gas in a large number simultaneously.
Copper water in the insulation pond 230 enters under the tight covering of graphite scale according to being cast into made-up belt in the coupling connection crystallizer 100 of the invention process.
Shown in accompanying drawing 2, accompanying drawing 3, coupling connection crystallizer 100 comprises graphite jig 110 and water collar 120, and wherein water collar 120 is combined to form by last water collar 128 and following water collar 129.Shown in accompanying drawing 4 and accompanying drawing 6, be through with the runner 111 of rectangle at the middle part of graphite jig 110.The middle part of water collar 120 is through with the mould that is connected and lays chamber 127 and vapor chamber 121.With embedding in mould is laid chamber 127 that graphite jig 110 fits tightly, then described runner 111 and described vapor chamber 121 are connected.On described on water collar 128 and the following water collar 129, each independently is provided with water-cooling system and secondary water-cooling system.A described water-cooling system comprises waterway 122, first water inlet 123, first delivery port 124, cooling water flows into waterway again outside first delivery port 124 flows out coupling connection crystallizer 100 from first water inlet 123, playing the water-cooled effect, is the solid-state made-up belt of red heat attitude with the copper water cooling of the runner 111 of flowing through.According to made-up belt width and required water-cooled intensity, can be along a plurality of first water inlets 123 and first delivery port 124 laterally or vertically are set.Shown in accompanying drawing 4 and accompanying drawing 5, described second water-cooling system comprises second water inlet 125 and the nozzle 126 that is connected.Nozzle 126 is positioned at the port of export of vapor chamber 121, and cooling water flows into from second water inlet 125, directly sprays to red heat attitude made-up belt surface from nozzle 126 again, plays the quenching effect.
In this embodiment, the area of passage of described vapor chamber 121 is identical with the area of passage of described runner 111, but, can be full of for steam so still can leave the gap between the surface of made-up belt and the vapor chamber 121 because red heat attitude made-up belt can expand with heat and contract with cold through a water-cooled time.The length of runner 111 is 20 centimetres, and the length that mould is laid chamber 127 is 9 centimetres, and the length of vapor chamber 121 is 10 centimetres.
Can improve the shape of runner 111 and vapor chamber 121 according to the actual conditions of producing.The length of runner 111 is generally 17～25 centimetres, and the length of vapor chamber 121 is 5～10 centimetres, is advisable than big 0～5 millimeter of height value of runner 111 with the height value of vapor chamber 121.
The flow of described cool water shower is 6.5～7 cubic metres/hour, and the pressure of spray is 580～600 handkerchiefs.1150 ℃～1160 ℃ of described casting temperatures, the cooled made-up belt temperature of water-cooling system that joins crystallizer through coupling is a room temperature.
Described made-up belt is drawn from described coupling connection crystallizer under the transmission of hauling machine.This made-up belt is of a size of: millimeter (wide) * 40,18 millimeters (thick) * 420 meter (length).Through the made-up belt surface-brightening non-oxidation that this coupling connection crystallizer casts out, therefore can omit hot rolling and mill the face operation.
Described made-up belt sent into carry out cold rollingly in the cold rolling machinery, the hard attitude made-up belt after cold rolling is of a size of 1.5 millimeters (thick) * 420 millimeter (wide).This hard attitude made-up belt is cut edge, and the width of the back made-up belt of cutting edge is 390 millimeters.This made-up belt is carried out secondary cold-rolling, and size becomes 0.025 ± 0.006 millimeter (thick) * 390 millimeter (wide).
The made-up belt of finishing cold rolling step is carried out the hot water ungrease treatment, send into then in the horizontal continuous annealing apparatus (this equipment is open in 200610039866.9 the patent of invention at application number), the speed with 7 meters/minute under 650 ℃ of conditions transmits this made-up belt.In this step, adopt high hydrogen to protect described made-up belt; the volume ratio of components of described high hydrogen is a hydrogen: nitrogen=3: 1; this high hydrogen not only plays the effect of avoiding made-up belt to contact with air, can also be rapidly with transfer of radiant heat to copper strips, make the control of annealing temperature more accurate.The graphite deflector roll that is provided with nozzle also is installed in described annealing device, the high hydrogen of described nozzle ejection high pressure, described graphite deflector roll utilizes gases at high pressure to make described made-up belt keep suspended state, no physics contacts between described made-up belt and the described annealing device, has guaranteed the non-oxidizing bright of copper strip surface.Therefore after carrying out annealing process, need not pickling and alkali cleaning, reduced cost and environmental protection.
The copper strips of finishing annealing steps is sheared into the copper strips packing warehouse-in of millimeter (wide) * 2600,0.25 millimeter (thick) * 47 millimeter (length) size after passivation.
The quality testing data of this finished product copper strips are as follows:
Cu+Ag:99.98%; O
2: 0.0008%; Conductance: 100.4%IACS; Resistance coefficient: 0.017154 ohm square metre/meter; Tensile strength: 247 MPas; Percentage elongation: 36%; Hardness: HV62; The bright and clean zero defect of copper strip surface.
Adopting the energy consumption index of produced in conventional processes oxygen-free high conductivity type copper strip is 1200 degree/tons, and adopting the energy consumption index of method of the present invention is 500 degree/tons, be prior art catabiotic half less than.
Realize small investment required for the present invention, the equipment investment of each ten thousand tons of band only is about 4,000 ten thousand yuan, and the equipment investment of conventional method is up to 100,000,000 yuan.
Claims (7)
1, the production method of oxygen-free high conductivity type copper strip comprises the steps:
(1) horizontal casting step: the raw material electrolytic zinc-coated steel sheet is put into smelting equipment be fused into copper water, this copper water is carried out horizontal casting be cast as made-up belt;
(2) rolling step: described made-up belt is rolled into hard attitude made-up belt;
(3) annealing steps: described hard attitude made-up belt sent in the annealing device anneal, promptly make described oxygen-free high conductivity type copper strip,
It is characterized in that:
Described smelting equipment is disjunctor stove (200), this disjunctor stove (200) comprising: the melting tank of adjacency (210), clarifier-tank (220) and insulation pond (230) successively, pool wall bottom between described melting tank (210) and described clarifier-tank (220) is provided with first passage (215), and the pool wall bottom between described clarifier-tank (220) and described insulation pond (230) is provided with second channel (225);
Described disjunctor stove (250) also comprises the coupling connection crystallizer (100) that is connected with described insulation pond (230), this coupling connection crystallizer (110) comprises graphite jig (110) and water collar (120), wherein, connect the runner (111) of this graphite jig (110) before and after described graphite jig (110) comprises; The mould that described water collar (120) comprises the front end that is positioned at this water collar (120) and is used to embed described graphite jig (110) is laid chamber (127), is positioned at the inner waterway (122) of described water collar (120), is used at least one first water inlet (123) and at least one first delivery port (124) from external communications to this waterway (122); What connect described water collars (120) before and after described water collar (120) also comprises is used to vapor chamber (121), a plurality of nozzles (126) that are used to spray cooling water that are positioned at this vapor chamber (121) port of export that copper base material is passed through, second water inlet (125) that is positioned at described water collar (120), described nozzle (126) is connected with described second water inlet (125), and described second water inlet (125) is connected with the outside of described water collar (120); The arrival end of described vapor chamber (121) is connected with the port of export of described runner (111), and the area of passage of described vapor chamber (121) is more than or equal to the area of passage of described runner (111);
Described copper water flow through successively described melting tank (210), first passage (215), clarifier-tank (220), second channel (225), insulation pond (230) flow into the described runner (111) that is arranged in described coupling connection crystallizer (110) again; Under the effect of the cooling water that is positioned at described waterway (122), be frozen into red heat attitude made-up belt, this red heat attitude made-up belt is directed in the described vapor chamber (121) and with the cooling water that sprays out from described nozzle (126) and contacts, described cooling water is gasificated into steam and is full of in the described vapor chamber (121), make the surface and the air of described red heat attitude made-up belt isolated, described red heat attitude made-up belt has been cooled to room temperature when being drawn described vapor chamber (121);
Described step (2) is cold rolling.
2, the production method of oxygen-free high conductivity type copper strip according to claim 1 is characterized in that: adopt the charcoal that floats over described copper water surface that described copper water and air is isolated in described melting tank (210) and clarifier-tank (220); In described insulation pond (230), adopt the graphite scale that floats over described copper water surface that described copper water and air is isolated.
3, the production method of oxygen-free high conductivity type copper strip according to claim 2 is characterized in that: the thickness of described charcoal and described graphite scale is 5 centimetres～30 centimetres.
4, the production method of oxygen-free high conductivity type copper strip according to claim 1 is characterized in that: the flow of described cool water shower is 4.5～8 cubic metres/hour, and the pressure of spray is 420～630 handkerchiefs.
5, the production method of oxygen-free high conductivity type copper strip according to claim 1 is characterized in that: described casting temperature is 1150～1200 degrees centigrade.
6, the production method of oxygen-free high conductivity type copper strip according to claim 1 is characterized in that: described cold rolling step comprises roughing, side cut, finish rolling.
7, the production method of oxygen-free high conductivity type copper strip according to claim 1 is characterized in that: described step (3) in turn includes the following steps: hot water cleaning and degreasing, horizontal continuous annealing.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007101348341A CN100566885C (en) | 2007-10-22 | 2007-10-22 | The production method of oxygen-free high conductivity type copper strip |
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| CNB2007101348341A CN100566885C (en) | 2007-10-22 | 2007-10-22 | The production method of oxygen-free high conductivity type copper strip |
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| CN100566885C true CN100566885C (en) | 2009-12-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101698207B (en) * | 2009-10-20 | 2011-07-20 | 无锡隆达金属材料有限公司 | Method for producing copper alloy coil pipe |
| CN101817073B (en) * | 2010-05-14 | 2012-07-04 | 许广和 | Process for manufacturing cadmium plate and cadmium alloy plate |
| CN102069354A (en) * | 2010-12-25 | 2011-05-25 | 安徽鑫科新材料股份有限公司 | Production process of tin-copper alloy strip |
| CN102274938A (en) * | 2011-07-29 | 2011-12-14 | 赤峰京铜铜业有限公司 | Processing method for producing brass strips |
| CN102284842A (en) * | 2011-07-29 | 2011-12-21 | 赤峰京铜铜业有限公司 | Processing technology for producing brass strip with special section |
| CN102383001B (en) * | 2011-09-25 | 2013-05-08 | 宁波市鄞州锡青铜带制品有限公司 | Production method of T2 copper strap used for automobile radiator |
| CN105772668A (en) * | 2016-03-11 | 2016-07-20 | 安徽鑫旭新材料股份有限公司 | Automatic air isolation device for feeding port of electric heating smelting furnace |
| CN106381410B (en) * | 2016-11-28 | 2019-01-22 | 佛山市承安铜业有限公司 | A kind of preparation method and its system of phosphorus-copper anode for integrated circuit |
| CN107052290B (en) * | 2017-03-28 | 2019-07-05 | 浙江力博实业股份有限公司 | A kind of production technology of high-purity oxygen-free high conductivity type copper bar |
| CN108339953B (en) * | 2018-02-09 | 2020-05-19 | 西安斯瑞先进铜合金科技有限公司 | Production process of non-vacuum down-leading continuous casting chromium zirconium copper slab ingot |
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