GB2041411A - Manufacturing a low-oxygen copper wire - Google Patents
Manufacturing a low-oxygen copper wire Download PDFInfo
- Publication number
- GB2041411A GB2041411A GB7942680A GB7942680A GB2041411A GB 2041411 A GB2041411 A GB 2041411A GB 7942680 A GB7942680 A GB 7942680A GB 7942680 A GB7942680 A GB 7942680A GB 2041411 A GB2041411 A GB 2041411A
- Authority
- GB
- United Kingdom
- Prior art keywords
- copper
- oxygen
- molten copper
- molten
- casting machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- B22D11/16—Controlling or regulating processes or operations
-
- 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
-
- 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
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/064—Accessories therefor for supplying molten metal
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
A method of manufacturing a low-oxygen copper wire comprises the steps of supplying molten copper to a covered launder to maintain a predetermined atmosphere and gas-sealed by a reducing or inert gas at least at the final stage, measuring the oxygen content of the molten copper in the launder or at an inlet of the casting machine, and adjusting the oxygen content of molten copper in accordance with the thus measured oxygen content, the oxygen content being adjusted to produce a low-oxygen copper wire having the desired oxygen content in the range of oxygen-free copper to tough-pitch copper after continuous casting in a belt-type casting machine followed by rolling. <IMAGE>
Description
SPECIFICATION
Method of manufacturing a low-oxygen copper wire
BACKGROUND OF THE INVENTION
The present invention relates to a method of continuously manufacturing low-oxygen copper
wires in the range from tough-pitch copper to oxygen-free copper.
Typical low-oxygen copper includes tough-pitch copper and oxygen-free copper.
Oxygen-free copper has no hydrogen brittleness and in addition, has good electric conductiv
ity and bending resistance as compared with tough-pitch copper. Thus, oxygen-free copper is
much in demand for use with parts for electronic tubes and material for electric wires.
The oxygen-free copper is manufactured under extremely strict manufacturing control as
compared with the tough-pitch copper.
Generally, oxygen-free copper is manufactured by maintaining the overall process from
melting to casting of copper in a protective atmosphere of oxygen-free and by systematically
controlling and managing the entire equipment for stable control of reducing treatment.
Accordingly, in the manufacture of oxygen-free copper, there requires extremely expensive
equipment and much high technical consideration as compared with tough-pitch copper.
There are two methods for manufacturing an oxygen-free copper wire presently industrialized
as follows:
One method comprises casting an oxygen-free copper ingot under the above-mentioned
control and management and transferring the ingot to a rolling line to roll it into a wire. This is the method employed most commonly.
The other is the method generally called a dip forming method (hereinafter referred to as a dip
method). This method comprises permitting a copper stripping wire to pass through a molten
metal tank, utilizing a difference in thermal capacity therebetween to adhere and solidify the
molten metal on the outer periphery of the stripping wire thereby forming a cast rod, and rolling the rod into a wire.
The first method requires particularly expensive equipment and a production line thereof is
divided into a casting line and a rolling line. It is therefore impossible to continuously
manufacture an oxygen-free copper wire from molten copper in a complete production line.
On the other hand, in accordance with the second method (dip method), it is possible to
continuously manufacture an oxygen-free copper wire from molten copper in a complete
production line. However, the dip method is not suitable for mass production in view of
manufacturing principle.
Further, the dip method requires a stripping wire separately from molten copper, and the overall apparatus must be controlled and managed systematically similar to the ingot casting
method in connection with molten copper in the molten metal tank, thus requiring expensive equipment.
On the other hand, in the manufacture of tough-pitch copper, oxygen content is high so that particularly strict control and management need not be made. As a result, the manufacturing equipment used is relatively simple and low in cost as compared with the case of oxygen-free copper. Maintenance of protective atmosphere and reducing treatment are also not particularly strict. With respect to the reducing treatment, it is possible to obtain the desired properties relatively easily by simply supplying a given amount of reducing agent into molten copper.
For tough-pitch copper, therefore, it is possible to continuously manufacture a copper wire at high speed by a continuous casting machine of the belt caster type, which method has been even put to practical use.
The term "continuous casting machine of the belt caster type" herein used implies the casting machine (such as SCR system, Properzi system, etc.) which comprises a movable endless belt and a casting wheel and the casting machine (such as Heyslet system) which comprises a pair of endless belts and a pair of casting frames.
The aforementioned casting machine is characterized in that the casting machine is connected
So a large melting furnace such as a reverberatory furnace, a shaft furnace, etc. and further connected to a rolling mill whereby molten copper produced in the melting furnace is subjected to continuous casting and rolling to manufacture a copper wire at high speed in a complete production line. Accordingly, in accordance with the above-mentioned method, the productivity is materially high and cost of such copper wires can be reduced extremely through mass production. Further, in accordance with the continuous casting machine of the type described, uniform quality can be assured. From the foregoing, for the tough-pitch copper wire, the method using the casting machine of the belt caster type is the most advantageous method among those so far employed.
However, in the past, it has been impossible to manufacture an oxygen-free copper wire by the casting machine of the belt caster type unless strict control and management are made by use of special and expensive equipment as in the case the oxygen-free copper ingot is manufactured.
One reason is that in view of construction of the melting furnace and casting machine, a considerable long transporting distance must be provided for molten copper between the meltinh furnace and casting machine, and in addition, the temperature of molten copper discharged from the melting furnace sometimes becomes considerably low as compared with the temperature required for casting so that the molten copper must be increased in temperature in the midst of transportation thereof. From this, discretion is exercised in which the provision of normal airtightness relative to molten copper being transported, for example, such as a cover on a transporting trough or a method similar thereto is not enough to fully prevent mixture of oxygen.
The other reason is that particularly, an inlet portion of the casting machine of the belt caster type comprises a movable member and the casting machine itself moves very quickly and is accordingly attended with some vibration is that it is difficult to provide an airtight connection between the casting machine and a member constituting the final stage of transportation from the melting furnace. Also from this, discretion is exercised in which mixture of oxygen cannot be prevented sufficiently.
Another reason for the difficulty in maintenance of airtight and for rendering the manufacture of an oxygen-free copper wire impossible is that in the case of the above casting machine, a given quantity of flow of molten copper must be supplied stably at high speed to a point of small cross-sectional area and hence, flow control to the molten copper must be made halfway.
Actually, for example, the oxygen content of molten copper discharged from a conventional shaft furnace with electrical copper charged therein is normally already 10-20 ppm at that time.
Even if reducing treatment is conducted in the midst of transportation, it is extremely difficult to reduce the oxygen content of copper wire to a level below 10 ppm, in consideration of the above-mentioned reason.
If special equipment before casting in the ingot casting method is incorporated into the casting machine of the belt caster type, it is no doubt expected that the oxygen-free copper wire may be manufactured. However, this comprises no merit in terms of cost, and thus no practical example has been found.
Accordingly, it is industrially impossible to manufacture an oxygen-free copper wire by the casting machine of the belt caster type in prior art technologies, and application of the aforementioned type is limited to tough-pitch copper. And it has been considered that the dip method was only the method for completely manufacturing an oxygen-free copper wire from molten copper.
It is therefore an object of the present invention to provide a method of manufacturing an oxygen-free copper wire using a continuous casting machine of a belt caster type.
It is a further object of the present invention to provide a method of a low-oxygen copper wire in the range from oxygen-free copper to tough-pitch copper by freely controlling oxygen content contained.
BRIEF DESCRIPTION OF THE INVENTION
In accordance with the present invention, there is provided a method of continuously manufacturing a low-oxygen copper wire wherein molten copper produced in a melting furnace is supplied to a continuous casting machine of a belt caster type and a rod-like copper material continuously delivered from the casting machine is rolled to continuously manufacture copper wires, the method comprising the steps of airtightly maintaining the molten copper during transportation from the melting furnace to the casting machine, gas-sealing at least a final stage of said transportation by reducing or inert gases, subjecting the molten copper during transportation to reducing treatment by a reducing agent, and controlling said reducing treatment on the basis of the measured value of oxygen content within the molten copper during transportation or at an inlet of the casting machine thereby continuously manufacturing lowoxygen copper wires.
That is, in view of an advantageous point in the case where an oxygen-free copper wire could be manufactured by the continuous casting machine of the belt caster type, the present inventors have made a challenge for the realization thereof.
The present inventors first arranged prior arts and as a result, they have found that success of invention depends on three points, that is, maintenance of airtightness of molten copper during transportation, assurance of suitable protective atmosphere and stable control of reducing treatment. The inventors then gained confidence in that if these three points could only be solved, an oxygen-free copper wire can be manufactured by the casting machine of the belt caster type.
No doubt, the present invention has succeeded after repeated experiments and difficulties.
It is not necessary to provide a perfect ,maintenance of airtightness of molten copper during transportation. For example, the provision of a cover on a transporting trough will suffice though not limited thereto.
It will be noted that a region corresponding to the final stage of transportation includes an inlet portion of the casting machine.
The characteristic feature of the present invention resides in several controlling and managing methods with respect to molten copper during transportation. These collectively function in order to achieve the object by coorporation with one another. It is natural that failure to lack even one element should not be allowed.
In actually embodying the present invention, it is generally necessary to provide an intermediate furnace between the melting furnace and the casting machine so as to increase a temperature of molten copper and to store thereof. When the intermediate furnace is used to apply reducing treatment to molten copper, the intermediate furnace functions to increase the temperature and at the same time, the reducing treatment may be carried out in the most stable and effective manner. In the event the reducing treatment is carried out by use of a reducing agent, variation in temperature of molten copper normally occurs. However, if the reducing treatment is carried out in the intermediate furnace with a considerable amount of molten copper stored therein, it is easy to minimize and stably control such variation in temperature.
Also, the method for carrying out the reducing treatment by use of a reducing agent in the intermediate furnace as described above is very advantageous in maintenance of airtightness during other transportation and in simplification of construction.
The reducing agent which can be used includes, for example, such as lumber, charcoal, and gases such as hydrogen and carbon monoxide.
The oxygen content in molten copper is intentionally continuously measured to control the reducing treatment in accordance with the thus obtained measured value. However, it is employment of such a continuous measuring method that can follow the speed of the belt caster type casting machine. According to such a measured value, it is possible to easily follow variation with time of oxygen content in molten copper.
The final stage of transportation is gas-sealed by the reducing or inert gas because in view of construction of the belt caster type casting machine, it is difficult to fully prevent mixture of oxygen by a conventional airtightening method with respect to said portion, and the justmentioned method is simplest and effective as the sealing method. More specifically, the object may be achieved, for example, by blowing a butane gas combustion flame.
While the gas seal is not limited, application of the gas seal to a region corresponding to the final stage of transportation will suffice but application thereof to the overall transportation process need not be required. It is to be noted that if the butane gas combustion frame is blown to the overall transportation process of molten copper to provide a gas seal, it is possible to keep a temperature of molten copper unchanged and to prevent downward movement thereof.
The above-mentioned controlling and managing method with respect to molten copper during transportation is materially simple and economical in terms of construction of equipment as compared with the case of conventional method for casting an oxygen-free copper ingot. In addition, the present method is not the method for systematically controlling and managing the whole equipment, and thus, is advantageously flexible, for example, when tough-pitch copper is switched to oxygen-free copper.
It will be noted that in manufacturing a tough-pitch copper wire, if over-reducing is carried out, air may be introduced to control the extent of reduction.
In the present invention, the method of continuously manufacturing a low-oxygen copper wire by the continuous casting machine of the belt caster type has employed the controlling and managing method as mentioned above, as a consequence of which the collective effect is the first assuredly realized thereby.
BRIEF DESCRIPTION OF THE DRAWINGS
The aforementioned and other objects and features of the present invention shall be described hereinafter in detail with reference to preferred embodiments thereof shown in the accompanying drawings, wherein:
Figure 1 is an explanatory view showing the entire line for manufacturing a low-oxygen copper wire in accordance with one mode of embodiment of the present invention;
Figure 2A is a detailed explanatory view showing the transporting process of molten copper;
Figure 2B is a sectional view taken on line B-B of Fig. 2A;
Figure 3 is a graph showing the results of electric conductivity test;
Figure 4 is a graph showing the results of twisting test;
Figure 5 is a graph showing the results of bend test;
Figure 6 is a graph showing the results of half softening temperature test; and
Figure 7 is a characteristic illustration showing the relationship between the quantity of lumber charged and oxygen content.
DETAILED DESCRIPTION OF THE INVENTION
One embodiment of the present invention will be described in detail with reference to Figs. 1, 2A and 2B. Raw copper 1 2 is charged into and molten in a shaft furnace 1 and transported to an intermediate furnace 2 through a transporting trough 6 held in airtight, after which the copper is supplied to a pot 8 through the transporting trough 7 held in airtight. In the pot 8, oxygen content of molten copper 24 is measured by means of a sensor 15, and on the basis of the result obtained therefrom, the charged amount of a reducing agent in the intermediate furnace 2 is operated for control so as to obtain a low-oxygen copper as desired.A continuous casting machine 3, which comprises a movable endless belt 4 and a casting wheel 5, receives molten copper supplied from the pot 8 to manufacture a rod-like copper material 1 3. The rodlike copper material 1 3 is rolled by rolling rolls 9, 10, 11 into the required size, thus obtaining a low-oxygen copper wire 14 as desired. More specifically, a connection portion between the pot 8, which is a region corresponding to the final stage of molten copper transported, and an inlet portion of the casting machine 3 is gas-sealed by a gas burner 1 6 in which butane gases are burned to form a reducing protective atmosphere.A connection portion between the pot 8 and the trough 7 and the interior of the pot 8 are also similarly gas-sealed by gas burners 17, 1 8 and 1 9. Further, a portion from a portion just outside the intermediate furnace 2 to the interior of the trough held in airtight by a cover 20 is similarly gas-sealed by gas burners 21, 22, and 23, and the molten copper is held so as not to lower the temperature thereof.
On the other hand, melting of copper in a shaft furnace 1 and increasing of temperature of molten copper in the intermediate furnace 2 are achieved by heating thereof through gas burners 25 and 26 in which butane gases are burned, and a portion between the shaft furnace 1 and the intermediate furnace 2 is also gas-sealed by a gas burner 27. The combustion butane gas flows as a reducing atmosphere gas into the transporting troughs 6 and 7 to effectively form a protective atmosphere on the surface of molten copper during transportation. The molten copper within the shaft furnace 1 flows into the intermediate furnace 2 through a transporting trough 29. The intermediate furnace 2 has a lumber charging opening 28. Materials charged into the shaft furnace 1 include electric copper 1 2 and scraps corresponding thereto.
If such materials of high quality are used, the oxygen content of molten copper when the latter is molten in the shaft furnace 1 is 10-20 p.p.m. This molten copper is introduced in the intermediate furnace 2 passing through the transporting trough 6 held in airtight, where the molten copper is increased in temperature and is subjected to reducing treatment by lumber or the like. The molten copper passes through the transporting trough 7 and the pot 8 and thence into the casting machine 3. The molten copper emerges from the casting machine 3 to form a continuous rod-like copper material 13, which is introduced into rolling rolls 9, 10 and 11 for rolling to obtain a copper wire 14.
Within the pot 8, oxygen content in molten copper is measured by a sensor or a measuring device 1 5 for continuously measuring oxygen content, and the thus measured value is fed back to determine the quantity of lumber charged in the intermediate furnace 2 thereby controlling the reducing treatment of molten copper. It is of course that the reducing treatment of toughpitch copper is different from that of oxygen-free copper.
In the measuring device 15, an electromotive force produced between oxygen in air and oxygen in molten copper is measured through a solid electrolyte (ZrO2), and is given by the following formula.
4EF = RT In PO2 - 2RT In a (o) where
E electromotive force measured
F : Faraday's constant
R : gas constant
T . abolute temperature
PO2 partial pressure of oxygen in air
a(o) : activity of oxygen in molten copper in air
a(o) = f0.C0 where, f0 : activity coefficient CO : oxygen concentration
In control of the reducing treatment, for example, in case of oxygen-free copper, assume that when the measured value is 10 p.p.m., the capacity of molten copper in the intermediate furnace 2 is 12-13 t and the quantity of discharge is 29 t/hr, 50-601 of lumber are charged and the oxygen content of molten copper in the intermediate furnace 2 is controlled to 6-8 p.p.m. In this case, reducing treatment is carried out considering that a fine amount of oxygen is mixed before the molten copper is fully supplied into the casting machine 3 via the transporting trough 7, the pot 8 and the inlet portion of the casting machine gas-sealed.
Further, assume that when the measured value is 6-7 p.p.m., the capacity of molten copper in the intermediate furnace 2 is 12-13 t and the quantity of discharge is 29 t/hr similarly to the example as previously described, the quantity of lumber was 60-70 1. In this case, gas cocks of the reducing gas burners arranged after the intermediate furnace 2 are further opened to increase the gas sealing effect. Generally, it is necessary to adjust opening of the gas cocks to increase or decrease the quantity of lumber charged as well as the state of gas seal in the case the oxygen content of molten copper from the shaft furnace 1 is varied..
In accordance with the method of manufacturing a copper wire as described above, it is possible to manufacture, while freely controlling, a low-oxygen copper wire in the range from tough-pitch copper to oxygen4ree copper as the kind of copper wire 1 4.
Next, Figs. 3 to 6 show the test results of oxygen-free copper wires manufactured under the above-mentioned production line in accordance with the embodiment of the present invention.
These graphs show the test results of both oxygen-free copper wires manufactured by the ingot casting method and oxygen-free copper wires manufactured by the dip method. Test wires used were all soft copper wires of 26 mm f.
The electric conductivity shown in Fig. 3 was tested in accordance with JIS C3002.
The twisting shown in Fig. 4 was tested in accordance with BS 1 74. While a hard copper wire was used in BS 174, a soft copper wire was used in the present test.
In the bending shown in Fig. 5, turns of bending in range of O to 1 80 degrees under the condition of radius of curvature R = 25 d (d : diameter of a copper wire) were measured.
In the half softening temperature shown in Fig. 6, the temperature at the 50% annealing value was measured in accordance with the isothermal softening characteristic. In case of oxygen-free copper, the half-softening temperature is high and thus the high temperature characteristic is good.
It is evident from these graphs that in accordance with the method of the present invention, it is possible to manufacture oxygen-free copper wires having better characteristic than those obtained by the ingot casting method and by the dip method. It is also evident that low-oxygen copper wires of the characteristic different from that of tough-pitch copper wires can be manufactured. Though not shown in the graphs, it is natural to be able to manufacture toughpitch copper wires also. One example of a normal tough-pitch copper wire is given in the following table.
Test Results of Tough-pitch Copper
Oxygen Electric- Half Soft
Content onductivity Twisting Bending tening Temp.
200 ppm 101.8% 40 turns 32 turns 160"C Fig. 7 shows the relationship as one example, varied with time, between the measured value of oxygen content in molten copper within the pot and the oxygen content of products corresponding thereto and the quantity of lumber charged, in case the oxygen-free copper wire is manufactured.
It is evident from Fig 7 that the measured value of oxygen content in molten copper is substantially in coincidence with the oxygen content of products corresponding thereto.
It is further evident that the oxygen content is high in the initial stage but can be controlled to a level below the target by the charging of the reducing agent in accordance with the measured value.
As is apparent from the foregoing description, in accordance with the method of continuously manufacturing a low-oxygen copper wire, the specific controlling and managing method may be applied to the molten copper during transportation to thereby completely manufacture an oxygen-free copper wire from molten copper using the continuous casting machine of the belt caster type, and in addition, the same equipment may be used to manufacture a low-oxygen copper wire in the range of tough-pitch copper to oxygen-free copper while freely controlling the same, thus providing materially high industrial values.
Although the present invention has been described with reference to preferred embodiments thereof, many modifications and alterations may be made within the spirit and scope of the present invention.
Claims (5)
1. A method of manufacturing a low-oxygen copper wire wherein molten copper produced in a melting furnace is supplied to a continuous casting machine of a belt caster type and a rodlike copper material continuously delivered from said casting machine is rolled to continuously manufacture copper wires, the method being characterized by supplying molten copper to a transportation process covered with a cover to maintain a predetermined atmosphere and gas sealed by a reducing or inert gas at least at the final stage; measuring oxygen content of molten copper in said transportation process or an inlet of said casting machine; and adjusting the oxygen content of molten copper in accordance with the thus measured oxygen content.
2. A method of manufacturing a low-oxygen copper wire as defined in claim 1, wherein the overall transportation process of molten copper is gas-sealed.
3. A method of manufacturing a low-oxygen copper wire as defined in claims 1 or 2, wherein said gas sealing is carried out by combustion gas of butane gas.
4. A method of manufacturing a low-oxygen copper wire as defined in claim 1, wherein said molten copper is held so as not to be reduced in temperature in the transportation process of molten copper.
5. A method of manufacturing a low-oxygen copper wire as defined in claim 1, wherein the oxygen content of molten copper is measured at the final stage in the transportation process of molten copper, and a reducing agent is charged into an intermediate furnace in accordance with the thus measured value.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16391178A JPS596736B2 (en) | 1978-12-28 | 1978-12-28 | Continuous manufacturing method for low-oxygen copper wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2041411A true GB2041411A (en) | 1980-09-10 |
| GB2041411B GB2041411B (en) | 1983-04-13 |
Family
ID=15783159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7942680A Expired GB2041411B (en) | 1978-12-28 | 1979-12-11 | Manufacturing a low-oxygen copper wire |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS596736B2 (en) |
| DE (1) | DE2952506A1 (en) |
| GB (1) | GB2041411B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2490678A1 (en) * | 1980-09-24 | 1982-03-26 | Jones & Laughlin Steel Corp | HIGH STOVE CASTING SYSTEM AND METHOD OF SUPPRESSING POLLUTANT FORMATION IN SUCH A SYSTEM |
| EP1145779A2 (en) * | 2000-04-11 | 2001-10-17 | Mitsubishi Materials Corporation | Adhesion-resistant oxygen-free copper wire rod |
| US6944930B2 (en) * | 2000-02-24 | 2005-09-20 | Mitsubishi Materials Corporation | Method for manufacturing low-oxygen copper |
| WO2006070057A1 (en) * | 2004-12-30 | 2006-07-06 | Outotec Oyj | Launder for casting molten copper |
| EP1249518B1 (en) * | 2001-04-10 | 2008-03-05 | Umicore Climeta Sas | Use of substantially oxygen-free, dendritic and uncoated copper for galvanic plating of printing cylinders |
| CN102287850A (en) * | 2011-07-15 | 2011-12-21 | 安徽鑫科新材料股份有限公司 | Low-oxygen copper-rod continuous-casting continuous-rolling combustion-control system |
| CN106403616A (en) * | 2016-08-18 | 2017-02-15 | 富通昭和线缆（天津）有限公司 | Chute device for copper bar production and copper bar manufacturing method |
| CN112658230A (en) * | 2020-12-03 | 2021-04-16 | 安徽楚江高新电材有限公司 | High-performance copper rod for marine power cable |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5865557A (en) * | 1981-10-12 | 1983-04-19 | Furukawa Electric Co Ltd:The | Production for low oxygen copper |
| JPS59166356A (en) * | 1983-03-11 | 1984-09-19 | Hitachi Seisen Kk | Prevention of freezing in continuous casting |
| JPS61275629A (en) * | 1985-05-31 | 1986-12-05 | Chino Corp | Radiation thermometer |
| JPS62140331U (en) * | 1986-02-25 | 1987-09-04 | ||
| JPH0289335U (en) * | 1988-12-28 | 1990-07-16 | ||
| JP5356974B2 (en) * | 2009-02-03 | 2013-12-04 | 日立電線株式会社 | Cast material, manufacturing method thereof, copper wire for magnet wire using the same, magnet wire and manufacturing method thereof |
| CN104651631B (en) * | 2014-11-07 | 2016-05-25 | 新兴铸管（浙江）铜业有限公司 | The technique of high-end 8mm diameter low-oxygen copper pole is produced in a kind of continuous casting and rolling |
| CN105081699A (en) * | 2015-09-08 | 2015-11-25 | 安徽天大铜业有限公司 | Production method of low-oxygen copper rod with diameter of 8 mm |
| CN106540962A (en) * | 2015-09-23 | 2017-03-29 | 潞安卓泰祥和金属科技宜兴有限公司 | High densification copper bar continuous casting and tandem rolling production line |
| CN106541093B (en) * | 2016-12-07 | 2018-11-23 | 安徽金林科技股份有限公司 | A kind of technique preparing low-oxygen copper pole using copper scap |
| CN108517419A (en) * | 2018-04-04 | 2018-09-11 | 中海宏祥铜业江苏有限公司 | A kind of oxygen-free copper bar production method |
| CN114892112B (en) * | 2022-04-07 | 2023-11-03 | 杭州富通集团有限公司 | Copper rod processing technology |
-
1978
- 1978-12-28 JP JP16391178A patent/JPS596736B2/en not_active Expired
-
1979
- 1979-12-11 GB GB7942680A patent/GB2041411B/en not_active Expired
- 1979-12-28 DE DE19792952506 patent/DE2952506A1/en not_active Withdrawn
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2490678A1 (en) * | 1980-09-24 | 1982-03-26 | Jones & Laughlin Steel Corp | HIGH STOVE CASTING SYSTEM AND METHOD OF SUPPRESSING POLLUTANT FORMATION IN SUCH A SYSTEM |
| US6944930B2 (en) * | 2000-02-24 | 2005-09-20 | Mitsubishi Materials Corporation | Method for manufacturing low-oxygen copper |
| US7524356B2 (en) | 2000-02-24 | 2009-04-28 | Mitsubishi Materials Corporation | Method for manufacturing low-oxygen copper |
| EP1145779A2 (en) * | 2000-04-11 | 2001-10-17 | Mitsubishi Materials Corporation | Adhesion-resistant oxygen-free copper wire rod |
| EP1145779A3 (en) * | 2000-04-11 | 2002-07-17 | Mitsubishi Materials Corporation | Adhesion-resistant oxygen-free copper wire rod |
| US6682824B1 (en) | 2000-04-11 | 2004-01-27 | Mitsubishi Materials Corporation | Adhesion-resistant oxygen-free roughly drawn copper wire and method and apparatus for making the same |
| EP1249518B1 (en) * | 2001-04-10 | 2008-03-05 | Umicore Climeta Sas | Use of substantially oxygen-free, dendritic and uncoated copper for galvanic plating of printing cylinders |
| EA010006B1 (en) * | 2004-12-30 | 2008-06-30 | Ототек Оюй | Launder for casting molten copper |
| WO2006070057A1 (en) * | 2004-12-30 | 2006-07-06 | Outotec Oyj | Launder for casting molten copper |
| US7700036B2 (en) | 2004-12-30 | 2010-04-20 | Outotec Oyj | Launder for casting molten copper |
| AU2005321205B2 (en) * | 2004-12-30 | 2010-05-27 | Outotec Oyj | Launder for casting molten copper |
| CN102287850A (en) * | 2011-07-15 | 2011-12-21 | 安徽鑫科新材料股份有限公司 | Low-oxygen copper-rod continuous-casting continuous-rolling combustion-control system |
| CN106403616A (en) * | 2016-08-18 | 2017-02-15 | 富通昭和线缆（天津）有限公司 | Chute device for copper bar production and copper bar manufacturing method |
| CN106403616B (en) * | 2016-08-18 | 2019-05-31 | 富通昭和线缆（天津）有限公司 | A kind of copper rod production chute device and copper bar manufacturing method |
| CN112658230A (en) * | 2020-12-03 | 2021-04-16 | 安徽楚江高新电材有限公司 | High-performance copper rod for marine power cable |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2041411B (en) | 1983-04-13 |
| DE2952506A1 (en) | 1980-07-17 |
| JPS596736B2 (en) | 1984-02-14 |
| JPS5592259A (en) | 1980-07-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2041411A (en) | Manufacturing a low-oxygen copper wire | |
| CA2261235C (en) | Process for the preparation of an iron-based powder | |
| FI74741B (en) | FOERFARANDE OCH ANORDNING FOER FRAMSTAELLNING AV FOEREMAOL SOM EJ, I KONTAKT MED MAENNISKANS HUD, ORSAKAR ALLERGISKA REAKTIONER. | |
| US4097584A (en) | Method of producing silicon useful for semiconductor component manufacture | |
| CN1128000A (en) | Twin-roll type continuous casting method and device | |
| CN108588328B (en) | Alloy particle welding cored wire production process | |
| US2282124A (en) | Production of iron from iron oxide | |
| US4290823A (en) | Manufacture of copper wire rod | |
| FR2732251B1 (en) | PROCESS AND DEVICE FOR MANUFACTURING ELECTRODE WIRE FOR EROSIVE SPARKING, AND WIRE THUS OBTAINED | |
| CA1099133A (en) | Production of metal compacts | |
| JP2638469B2 (en) | Method and apparatus for forming a chemical vapor deposition structure by chemical vapor deposition | |
| KR102626851B1 (en) | Method and apparatus for producing ternary cathode materials | |
| JPS55128353A (en) | Manufacture of copper alloy wire | |
| US4713215A (en) | Process for sintering powdered material in a continuous furnace | |
| GB2048954A (en) | Method of manufacturing a copper alloy wire | |
| CN1504585A (en) | Continuous production method for industrial grade high purity copper | |
| JP4393607B2 (en) | Continuous heating furnace | |
| JPS5725261A (en) | Manufacture of thin plate | |
| JPS5533858A (en) | Production equipment of quenching congelation material | |
| Nakagawa et al. | Continuous Melting, Refining and Casting Process | |
| JPS55126353A (en) | Production of copper alloy wire | |
| JP2000199004A (en) | Lead oxide or lead, and its manufacture | |
| JPS5617172A (en) | Production of good quality steel material by continuous casting | |
| EP0110630B1 (en) | Production of metal strip from powder material | |
| JP2024512343A (en) | Sintering equipment and sintering method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |