CN102686337B - Process for producing copper alloy wire containing active element - Google Patents
Process for producing copper alloy wire containing active element Download PDFInfo
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- CN102686337B CN102686337B CN201180005192.XA CN201180005192A CN102686337B CN 102686337 B CN102686337 B CN 102686337B CN 201180005192 A CN201180005192 A CN 201180005192A CN 102686337 B CN102686337 B CN 102686337B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
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- 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
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
- B22D11/004—Copper alloys
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- 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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting
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- 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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/055—Cooling the moulds
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- 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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/059—Mould materials or platings
-
- 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
- B22D11/10—Supplying or treating molten metal
- B22D11/103—Distributing the molten metal, e.g. using runners, floats, distributors
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Continuous Casting (AREA)
Abstract
Disclosed is a process for producing a copper alloy wire containing an active element, the process comprising: a molten-copper formation step in which a raw copper material is melted to form molten copper; an active-element addition step in which an active element is added to the molten copper; a holding step in which the molten copper is held in a casting furnace; and a casting step in which a cast is continuously produced with a casting die connected to the casting furnace. The casting die has been connected to the casting furnace through a heat insulation member on the vertically lower side of the casting furnace. In the casting step, a pressure is applied toward the inside of the casting die to supply the molten copper to the casting die, and the molten copper is cooled and solidified in the casting die.
Description
Technical field
The present invention relates to and be made up of the copper alloy containing Cr, Zr, Si etc., the manufacture method of the copper alloy wire of the high strength used in Electric trolley cable etc.
Its content, was incorporated herein at the Japanese Patent Application 2010-14397 CLAIM OF PRIORITY of Japanese publication based on January 26th, 2010 by the application.
Background technology
In the past, as the raw material of Electric trolley cable etc., widely use the copper wires of fine copper or the copper alloy containing Sn etc.These copper wires such as use the continuous casting machine shown in patent document 1 and patent document 2 to manufacture.In continuous casting machine shown in patent document 1 and patent document 2, foundry furnace is directly connected with casting mold, solidifies the ingot casting that obtains above horizontal direction, vertical direction or pull out below vertical direction in casting mold.
In this continuous casting machine, due to the ingot casting of small diameter can be made continuously, be therefore particularly suitable for making wire rod.
In recent years, as the trolley cable that the Shinkansen etc. is used for high-speed railway, the wire rod that and copper alloy that electric conductivity good higher by intensity compared with the past is formed is required.
Wherein, and copper alloy that electric conductivity good high as intensity, can enumerate the copper alloy such as containing Cr, Zr, Si etc.Containing in the copper alloy of these elements, by carrying out suitable heat treatment, precipitate particle dispersion, in the parent phase of copper, can realize the raising of intensity and guaranteeing of electric conductivity.
The wire rod of this copper alloy containing Cr, Zr, Si etc. manufactured in the past as follows: make the ingot casting being called that the sectional area of cake or billet is large, carry out hot-working, cold working to this ingot casting, thus the wire rod of manufactured copper alloy.
But when making the large ingot casting of sectional area, then carrying out hot-working or cold working to make wire rod, the length of the wire rod obtained, by the restriction of cast ingot dimension, therefore can not obtain long wire rod.In addition, there is the problem of production efficiency difference.
Therefore, to Patent Document 3 discloses the wire rod of the copper alloy containing Cr, Zr etc. in the horizontal direction, above vertical direction or pull out below vertical direction, thus make the technological thought of the wire rod of minor diameter continuously.That is, propose and cast by the wire rod of continuous casting machine as one, in Patent Document 2 to the copper alloy containing Cr, Zr etc.
In addition, Patent Document 4 discloses the technology by using the horizontal continuous casting machine of heated mold to make the wire rod of the copper alloy containing Cr, Zr.
But in the continuous casting machine that patent document 1 and patent document 2 represent, usual casting mold is made up of the graphite (graphite) of solid lubricity excellence, and the casting mold be made up of this graphite directly contacts with the motlten metal in foundry furnace.
Wherein, the element such as Cr, Zr, Si is the active element high with the reactivity of graphite.Therefore, the element (active element) such as Cr, Zr, Si in casting mold and molten copper reacts Formed compound, the ingot casting be cast or casting mold premature wear bonding with casting mold, thus can not cast long-term and stably.
In addition, in the horizontal continuous casting machine that patent document 1,2 is recorded, owing to pulling out ingot casting in generally horizontal directions, the impact of gravity can when therefore solidifying in casting mold, be subject to.In addition, between casting mold and ingot casting, the gap being called air-gap is produced due to solidification shrinkage, in horizontal continuous casting machine, different from lower side air-gap amount at the upper side of ingot casting.Therefore, different from lower side cooling velocity at the upper side of ingot casting, the quality of the ingot casting be made up of the copper alloy containing Cr, Zr, Si etc. is likely unstable.In addition, as mentioned above, owing to producing the premature wear of ingot casting and the bonding of casting mold or casting mold, the surface quality of ingot casting is deteriorated or becomes difficult from the pull-out of casting mold, thus can not stably cast.
In patent document 3, to disclose the wire rod of the copper alloy containing Cr, Zr etc. in the horizontal direction, above vertical direction or pull out below vertical direction, thus make the thought of the wire rod of minor diameter continuously.But, as mentioned above, in continuous casing in the past, the wire rod of the copper alloy containing Cr, Zr, Si etc. can not be made continuously.
In addition, in patent document 4, disclosing by using heated mold, suppressing the reaction of graphite and Cr, Zr isoreactivity element, being made the wire rod of the copper alloy containing Cr, Zr etc. by horizontal continuous casting machine continuously.But because graphite casting mould itself contacts with the molten copper of high temperature, oxidation loss becomes severe.In addition, when using heated mold, owing to not easily increasing the pull-out speed of ingot casting, therefore there is the problem that can not enhance productivity.Further, in this patent document 4, due at general horizontal direction pull-out ingot casting, therefore also exist and be subject to the impact of gravity, the problem of quality instability.
Patent document 1: Japanese Unexamined Patent Publication 06-226406 publication
Patent document 2: Japanese Laid-Open Patent Publication 61-209757 publication
Patent document 3: Japanese Unexamined Patent Publication 2006-138015 publication
Patent document 4: Japanese Patent Publication 08-000956 publication
Summary of the invention
In view of this, the object of the invention is to, the manufacture method of the copper alloy wire containing active element effectively and stably can making the copper alloy wire be made up of the copper alloy containing Cr, Zr, Si isoreactivity metal is provided.
In order to solve this problem, reach above-mentioned purpose, a scheme of the present invention has following necessary condition.
The manufacture method of the copper alloy wire containing active element that a scheme of the present invention relates to, has: melted by copper raw material and generate the molten copper generation process of molten copper; The active element adding active element in described molten copper adds operation; Described molten copper is remained on the maintenance operation in foundry furnace; The casting process of ingot casting is made continuously with the casting mold by being connected with described foundry furnace, described casting mold is connected with the vertical direction lower side of described foundry furnace by heat insulating member, in described casting process, in described casting mold, apply pressure and described molten copper is supplied in described casting mold, in described casting mold, making described molten copper cool, solidify.
The described copper alloy wire containing active element is made up of the copper alloy containing active element.
What relate in a scheme of the present invention contains in the manufacture method of the copper alloy wire of active element, the temperature of described casting mold can also be remained on less than 450 DEG C.
The temperature of the described molten copper of described heat insulating member part can also be set as the fusing point higher than described molten copper.
In described casting process, the head that can also make molten copper in the foundry furnace apart from the upper end of described casting mold is more than 100mm.
The sectional area ratio Sf/Sc of the sectional area Sf of the sectional area Sc of the horizontal direction of described casting mold and the horizontal direction of described foundry furnace can also be more than 5.
Can also continuous melting furnace be set at the leading portion of described foundry furnace and keep stove, the described molten copper generated in described molten copper generation process is supplied in described foundry furnace continuously.
What relate in a scheme of the present invention contains in the manufacture method of the copper alloy wire of active element, owing to arranging heat insulating member between casting mold and foundry furnace, therefore, it is possible to prevent casting mold to be heated to the temperature equal with the molten copper of foundry furnace inside.Therefore, the reaction of casting mold and Cr, Zr, Si isoreactivity element can be suppressed.In addition, even if the temperature of casting mold is suppressed lower, also can the temperature of the molten copper near the casting mold in foundry furnace be maintained high, can stably cast.
Further, in casting process, in casting mold, apply pressure and molten copper is supplied in casting mold, making molten copper cool in casting mold, solidify.Therefore, as mentioned above, even if accompany heat insulating member between foundry furnace and casting mold, also can supply molten copper by foundry furnace effectively to casting mold, can stably cast.In addition, because casting mold is disposed in the vertical direction lower side of foundry furnace, the head of the molten copper remained in foundry furnace is utilized can to apply pressure in casting mold effectively.
Wherein, in temperature, the i.e. casting mold of preferred casting mold, the temperature at maximum temperature position remains on less than 450 DEG C.
Now, by cooling casting mold, the temperature forming maximum temperature position in casting mold is remained on less than 450 DEG C, the premature wear of casting mold can be suppressed, and the reaction with Cr, Zr, Si isoreactivity element can be suppressed.When particularly a part for casting mold is made up of graphite, the oxidation loss of casting mold can be suppressed effectively.In addition, casting mold is connected by heat insulating member with foundry furnace, even if therefore casting mold is remained on less than 450 DEG C, also can prevent the temperature of molten copper in foundry furnace from reducing, can stably cast.
The temperature of the described molten copper of described heat insulating member part is preferably set to the fusing point higher than described molten copper.
Now, the mobility of the molten copper in heat insulating member part can be kept, by the head pressure of the molten copper in foundry furnace, molten copper can be supplied effectively in casting mold.In addition, casting mold is connected by heat insulating member with foundry furnace, even if therefore the temperature of the molten copper by heat insulating member inside is set as the fusing point higher than molten copper, casting mold also can not expose at high temperature.Therefore, the premature wear of casting mold and the reaction with active element can be suppressed.
In described casting process, in the foundry furnace of the upper end of casting mold described in preferred distance, the head of molten copper is more than 100mm.
Now, in casting mold, molten copper can be supplied effectively, can stably cast.In addition, the generation of micro-pore can be suppressed, the ingot casting of high-quality can be made.
The sectional area ratio Sf/Sc of the sectional area Sf of the sectional area Sc of the horizontal direction of casting mold and the horizontal direction of foundry furnace is preferably more than 5.
Now, can will suppress less from the liquid surface of molten copper in foundry furnace during casting mold pull-out ingot casting.Therefore, the head pressure of molten copper is stablized, and can make the ingot casting of high-quality.
Preferably continuous melting furnace be set at the leading portion of foundry furnace and keep stove, the molten copper generated in molten copper generation process is supplied in foundry furnace continuously.
Now, because molten copper is continually fed in foundry furnace, therefore long ingot casting can be made.In addition, the raw-material ingot casting of wire rod can effectively be created.
According to a scheme of the present invention, can effectively and stably make the copper alloy wire be made up of the copper alloy containing Cr, Zr, Si isoreactivity metal.
Accompanying drawing explanation
Fig. 1 is the brief description figure containing an example of the continuous casting apparatus used in the embodiment of the manufacture method of the copper alloy wire of active element related in a scheme of the present invention.
The key diagram of the foundry furnace that Fig. 2 possesses for the continuous casting apparatus shown in Fig. 1.
Fig. 3 is the amplification key diagram of the coupling part of foundry furnace and casting mold.
Fig. 4 is the flow chart of the embodiment of the manufacture method of the copper alloy wire containing active element that a scheme of the present invention relates to.
Fig. 5 is the figure of another example representing the continuous casting apparatus used in the embodiment of the manufacture method of the copper alloy wire containing active element related in a scheme of the present invention.
Detailed description of the invention
Below, be described with reference to the embodiment of accompanying drawing to the manufacture method of the copper alloy wire containing active element that a scheme of the present invention relates to.
The copper alloy wire containing active element manufactured in the manufacture method of present embodiment contains Cr, Zr, Si etc. as the active element high with the reactivity of the graphite (graphite) forming aftermentioned graphite sleeve 31.And the element high with the reactivity of graphite (graphite) refers to the more stable element of low, compared with element simple substance after Formed compound the material of carbide standard free energy of formation.
In the present embodiment, containing the copper alloy wire of active element by containing more than Cr:0.25 quality % 0.45 quality below %, more than Zr:0.05 quality % 0.15 quality below %, more than Si:0.01 quality % 0.05 quality below %, the Cu-Cr-Zr-Si alloy that remainder contains Cu and inevitable impurity is formed.
In addition, the wire diameter (diameter) containing the copper alloy wire of active element is more than 10mm below 40mm, is 30mm in the present embodiment.
Then, the continuous casting apparatus used in the manufacture method to the copper alloy wire containing active element of present embodiment is described.Fig. 1 represents the continuous casting apparatus 10 of the raw-material ingot casting W making the copper alloy wire become containing active element.
This continuous casting apparatus 10 possesses calciner 11, maintenance stove 13, Conveying Chute 15, foundry furnace 20, casting mold 30 and pulls out the pinch roll 17 of the ingot casting W made.
Calciner 11 makes the stove of molten copper for heating melting copper raw material, possess the material pouring inlet 11A dropping into copper raw material and the molten copper outlet 11B discharged by the molten copper made.
In addition, be equipped keep stove 13 at the rear section side of this calciner 11, calciner 11 connects by being connected chute 12 with maintenance stove 13.
Stove 13 is kept to be by the temporary maintenance of molten copper supplied by calciner 11 and the stove be incubated.Be provided with at this maintenance stove 13 interpolation equipment (adding set) (not shown) of adding Cr, Zr, Si isoreactivity element.In addition, in order to prevent the oxidation of active element, be inert gas atmosphere in this maintenance stove 13.
Conveying Chute 15 will add Cr, Zr, Si isoreactivity element and the molten copper carrying out composition adjustment is transported to the device in the foundry furnace 20 of back segment.In the present embodiment, the inside of Conveying Chute 15 is inert atmosphere.
Foundry furnace 20 is for storing the stove from the molten copper keeping stove 13 to carry.As shown in Figure 2, this foundry furnace 20 possesses chamber 21, furnace main body 23 and firing equipment (heater) 24.The inside in chamber 21 is inert gas atmosphere.In addition, firing equipment 24, in order to adjust the molten copper temperature that stores and arrange, is provided with pharoid in the present embodiment.Further, plug hole 26 is equipped with at the bottom surface portions in furnace main body 23 and chamber 21.
In this foundry furnace 20, the sectional area Sf in cross section of horizontal direction along furnace main body 23 inside storing molten copper is set at 20000mm
2≤ Sf≤34600mm
2scope in.Further, in this foundry furnace 20, be equipped with the level transducer (not shown) of the liquid level position for detecting the molten copper stored in furnace main body 23 inside.
As shown in Figure 3, casting mold 30 has the cylindrical shape possessing casting hole 36 through in axial direction.Casting mold 30 possesses graphite sleeve on the inner peripheral surface being arranged on casting hole 36 31 and is positioned at the cooling jacket 32 of outer circumferential side of this graphite sleeve 31.The water channel 33 for the cooling water that circulates is provided with, to cool graphite sleeve 31 in the inside of cooling jacket 32.
This casting mold 30 is connected with the vertical direction lower side of foundry furnace 20, and as shown in Figures 2 and 3, the casting hole 36 of the plug hole 26 and casting mold 30 that are arranged to foundry furnace 20 is communicated with.The diameter of the casting hole 36 of casting mold 30 is set to below 50mm, preferably more than 10mm below 40mm.In the present embodiment, the diameter of casting hole 36 is set to 30mm.
The sectional area ratio Sf/Sc of the sectional area Sf of the sectional area Sc of the horizontal direction of casting mold 30 and the horizontal direction of foundry furnace 20 is set to more than 5 (Sf/Sc >=5).This sectional area ratio Sf/Sc is preferably more than 10 (Sf/Sc >=10).
And be equipped with heat insulating member 40 between the graphite sleeve 31 and the furnace main body 23 of foundry furnace 20 of casting mold 30, in the present embodiment, heat insulating member 40 is configured between the outer side bottom surface in chamber 21 and the outer side bottom surface of furnace main body 23.In addition, this heat insulating member 40 is formed as the tubular with through hole 46, and the inner peripheral surface of through hole 46 is configured to be connected with the inner peripheral surface of the casting hole 36 of casting mold 30 and the plug hole 26 of foundry furnace 20.
Heat insulating member 40 is such as by Al
2o
3, SiO
2form on pottery, its thermal conductivity factor is 40W/(mK at normal temperatures) below, thickness is set to more than 5mm below 60mm.
Then, the manufacture method of the copper alloy wire containing active element using the present embodiment of above-mentioned continuous casting apparatus 10 is described.
As shown in Figure 4, should have containing the manufacture method of the copper alloy wire of active element: copper raw material is melted and generates the molten copper generation process S01 of molten copper; The active element adding active element in obtained molten copper adds operation S02; By molten copper from the molten copper conveying operation S03 keeping stove 13 to be transported to foundry furnace 20; The molten copper being added with active element is remained on the maintenance operation S04 in foundry furnace 20; The casting process S05 of ingot casting W is made continuously with the casting mold 30 by being connected with this foundry furnace 20.
(molten copper generation process S01)
First, as copper raw material, prepare purity and be more than 99.99 quality % and be less than the negative electrode of the fine copper (4NCu) of 99.999 quality %.This 4NCu negative electrode is put in calciner 11 from material pouring inlet 11A, carries out heating melting at calciner 11 and make molten copper.Then, the molten copper obtained is supplied to maintenance stove 13 from molten copper outlet 11B by connecting chute 12.
(active element adds operation S02)
In maintenance stove 13, while temporarily keeping the molten copper be supplied to, by the firing equipment such as heater or load coil (heater) (not shown), the temperature of molten copper is controlled at such as 1100 ~ 1400 DEG C.Then, in the molten copper kept in stove 13, add Cr, Zr, Si isoreactivity element, the composition of adjustment molten copper.Now, keeping in stove 13 is inert gas atmosphere, suppresses the oxidation of Cr, Zr, Si isoreactivity element.
(molten copper conveying operation S03)
To the molten copper being added with Cr, Zr, Si isoreactivity element in stove 13 kept to be supplied to foundry furnace 20 by Conveying Chute 15.As mentioned above, the inside of this Conveying Chute 15 is inert gas atmosphere, prevents the oxidation of molten copper and active element.
(keeping operation S04)
In this foundry furnace 20, keep the molten copper being added with Cr, Zr, Si isoreactivity element, and by the firing equipments such as pharoid (heater) 24, the temperature of molten copper is controlled at such as 1100 ~ 1400 DEG C.And the liquid level position storing the molten copper in the furnace main body 23 of this foundry furnace 20 detects by level transducer, the certain conveying capacity of mode to the molten copper carrying out self-sustaining stove 13 is kept to adjust with liquid level position.
(casting process S05)
Then, the molten copper stored in foundry furnace 20 is supplied in the casting hole 36 of casting mold 30 by plug hole 26.Be supplied to graphite sleeve 31 partial coagulation that the molten copper in casting mold 30 is being cooled by cooling jacket 32, make ingot casting W by the lower end side of casting hole 36.And the pull-out speed of ingot casting W controls by pinch roll 17, in the present embodiment, ingot casting W is pulled out intermittently.
The pull-out speed of the ingot casting W in casting process S05 is adjusted to more than 200mm/min below 600mm/min.In addition, molten copper is adjusted to more than 0.5t/ hour less than 10t/ hour to the feed speed of foundry furnace 20.
In addition, in this casting process S05, the head pressure storing the molten copper in the furnace main body 23 of foundry furnace 20 acts in casting mold 30, in the present embodiment, the head of the molten copper controlled the liquid level of the molten copper in furnace main body 23 in the furnace main body 23 of the upper end 30a making distance casting mold 30 is more than 100mm.
Further, in this casting process S05, the temperature of the upper part 31a of the graphite sleeve 31 of casting mold 30 is set to less than 450 DEG C, and the molten copper temperature of heat insulating member 40 part is set to the fusing point higher than molten copper.
The ingot casting W so obtained is cooled by cooling device (not shown) and is rolled into coiled type.In the present embodiment, such as the long ingot casting W of more than 950 DEG C is cooled to normal temperature with the cooling velocity of 50 DEG C/more than min by cooling device, thus carries out the solution treatment of ingot casting W.
Then, by implementing heat treatment, cold working etc. to the ingot casting W being cooled to normal temperature, the copper alloy wire containing active element with predetermined characteristic is made.
According to the manufacture method of copper alloy wire containing active element of present embodiment with this operation, owing to being equipped with heat insulating member 40 between the graphite sleeve 31 and the furnace main body 23 of foundry furnace 20 of casting mold 30, therefore, it is possible to prevent the molten copper in furnace main body 23 from directly contacting with the graphite sleeve 31 of casting mold 30.Therefore, the reaction of graphite sleeve 31 and Cr, Zr, Si isoreactivity element can be suppressed.Thus, can prevent that graphite sleeve 31 and ingot casting W's is bonding, the deterioration of graphite sleeve 31 can be prevented.In addition, the oxidation loss of graphite sleeve 31 can be suppressed, can cast long-term and stably.
And, because casting mold 30 is disposed in the vertical direction lower side of foundry furnace 20, in casting process S05, in casting mold 30, the head pressure of the molten copper remained in the furnace main body 23 of foundry furnace 20 make molten copper cool, solidify while can be made to act in casting mold 30, even if accompanying heat insulating member 40 also can be supplied in the casting hole 36 of casting mold 30 effectively by molten copper, can stably cast.Particularly in the present embodiment, in casting process S05, the head of the molten copper in the furnace main body 23 of distance casting mold 30 upper end is more than 100mm, therefore can supply molten copper effectively in casting mold 30, can stably cast.In addition, the generation of micro-pore can be suppressed, the ingot casting W of high-quality can be made.
In addition, owing to the temperature of the upper part 31a of the graphite sleeve 31 of casting mold 30 can be remained on less than 450 DEG C, while the premature wear of graphite sleeve 31 can be suppressed, the reaction with Cr, Zr, Si isoreactivity element can be suppressed.In addition, owing to the graphite sleeve 31 of casting mold 30 being connected with the furnace main body 23 of foundry furnace 20 by heat insulating member 40, even if therefore cooling casting mold 30 is less than 450 DEG C to make the temperature of casting mold 30, also can prevent the temperature of the molten copper in foundry furnace 20 from reducing.
Further, molten copper temperature due to heat insulating member 40 part is set to the fusing point higher than molten copper, therefore, it is possible to keep the mobility of the molten copper in heat insulating member 40 part, utilize the head pressure of the molten copper in foundry furnace 20, molten copper can be supplied in casting mold 30 effectively.In addition, by heat insulating member 40, casting mold 30 is connected with foundry furnace 20, even if therefore the molten copper temperature of heat insulating member 40 part is set as the fusing point higher than molten copper, casting mold 30 also can not expose at high temperature, can suppress the premature wear of casting mold 30 and the reaction with active element.
Particularly in the present embodiment, the thermal conductivity factor of heat insulating member 40 be at normal temperatures 40W/ (mK) below, the thickness of heat insulating member 40 is set to more than 5mm below 60mm, therefore can suppress the heat transfer between the graphite sleeve 31 of casting mold 30 and the furnace main body 23 of foundry furnace 20 effectively.
The sectional area ratio Sf/Sc of the sectional area Sf of the sectional area Sc of the horizontal direction of the casting hole 36 of casting mold 30 and the horizontal direction of foundry furnace 20 is set to meet Sf/Sc >=5, preferably Sf/Sc >=10.Therefore, in casting process S05, can suppress less by the liquid surface of the molten copper in furnace main body 23, the head pressure of molten copper becomes stable.Thus, the ingot casting W of high-quality can be made.
Further, arrange calciner 11 at the leading portion of foundry furnace 20, keep stove 13 and be connected chute 12, the molten copper generated in molten copper generation process S01 is supplied in foundry furnace 20 continuously.Therefore, ingot casting W can effectively be manufactured.
In addition, in the present embodiment, because the inside of calciner 11, maintenance stove 13, Conveying Chute 15, foundry furnace 20 is inert gas atmosphere, therefore can prevents the oxidation of molten copper and Cr, Zr, Si isoreactivity element, the ingot casting W of high-quality can be made.
Above embodiments of the present invention are illustrated, but the present invention is not limited to this, can suitably changes in the scope not departing from the technology of the present invention thought.
Such as, in the present embodiment, the situation of obtained ingot casting W quenching being carried out solution treatment is illustrated, but is not limited thereto.Such as, ingot casting W can also be cooled, then implement solution treatment, or do not implement solution treatment itself.
In addition, use possesses calciner 11, keeps stove 13 to be illustrated with the continuous casting apparatus 10 being connected chute 12, but is not limited thereto.Such as shown in Figure 5, molten copper can also be generated by batch (-type) calciner 111, by Conveying Chute 15, molten copper is supplied to foundry furnace 20.Now, in batch (-type) calciner 111, composition adjustment can be carried out.That is, molten copper generation process S01 and active element interpolation operation S02 can be carried out simultaneously.In addition, by being connected with foundry furnace 20 by multiple stage batch (-type) calciner 111, by batch (-type) calciner 111 to foundry furnace 20 alternative supply molten copper, long ingot casting W can be made thus.
In the present embodiment, to making containing more than Cr:0.25 quality % 0.45 quality below %, more than Zr:0.05 quality % 0.15 quality below %, more than Si:0.01 quality % 0.05 quality below %, the situation that remainder contains the copper alloy wire of the Cu-Cr-Zr-Si alloy of Cu and inevitable impurity is illustrated, but is not limited thereto.Such as, copper alloy wire containing any one in Cr, Zr, Si or two or more active elements, can also contain other element.
The situation that the diameter of the casting hole 36 of casting mold 30 is below 50mm, preferably more than 10mm below 40mm is illustrated, but is not limited thereto.
In addition, pull-out speed, the molten copper of the ingot casting W in casting process do not limit in the present embodiment to the feed speed of foundry furnace 20.
The situation only arranging a plug hole 26 and casting hole 36 is respectively illustrated as shown in the figure, but is not limited thereto.Multiple plug hole 26 and casting hole 36 such as can also be set, make polylith ingot casting W simultaneously.
The situation pulling out ingot casting W is intermittently illustrated, but is not limited thereto.Such as can also pull straight ingot casting W.
In addition, the situation that the inside of calciner 11, maintenance stove 13, Conveying Chute 15 and foundry furnace 20 is inert gas atmosphere is illustrated, but is not limited thereto.Such as, vacuum (decompression) state can also be formed to prevent the oxidation of molten copper, active metal.
Situation casting mold 30 being possessed to graphite sleeve 31 is illustrated, but is not limited thereto.Such as casting mold 30 can also pass through other material formation that boron nitride (BN) etc. has solid lubricity.
The situation that the inner peripheral surface of the through hole 46 of heat insulating member 40 is configured to be connected with the inner peripheral surface of the casting hole 36 of casting mold 30 is illustrated, but is not limited thereto.Such as, the inner peripheral surface of through hole 46 can also be formed as retreating to diametric(al) foreign side compared with the inner peripheral surface of casting hole 36.That is, the diameter of through hole 46 can also be greater than the diameter of casting hole 36.
In addition, the component parts of casting mold 30 is not defined in the present embodiment.Such as, the structure of cooling jacket 32, the configuration etc. of water-cooled pipe arrangement (water channel 33) can carry out suitable design alteration.
Utilizability in industry
According to a scheme of the present invention, can effectively and stably make the copper alloy wire be made up of the copper alloy containing active metal.Copper alloy wire containing active metal is good due to the high and electric conductivity of intensity, such as, may be used for trolley cable etc. used for high-speed railway.A scheme of the present invention goes for the manufacturing process of this copper alloy wire.
Symbol description
W ingot casting, 11 calciners, 13 keep the upper end of stove, 20 foundry furnaces, 30 casting molds, 30a casting mold, 40 heat insulating members, S01 molten copper generation process, S02 active element interpolation operation, S04 to keep operation, S05 casting process.
Claims (7)
1. containing the manufacture method of copper alloy wire for active element, it is characterized in that, the manufacture method of the manufacture method of the described copper alloy wire containing active element to be diameter the be copper alloy wire containing active element of more than 10mm below 40mm, has:
Copper raw material is melted and generates the molten copper generation process of molten copper;
The active element adding active element in described molten copper adds operation;
Described molten copper is remained on the maintenance operation in foundry furnace; With
The casting process of ingot casting is made continuously by the casting mold be connected with described foundry furnace,
Described casting mold is connected with the vertical direction lower side of described foundry furnace by heat insulating member, to make the head pressure of the described molten copper stored in described foundry furnace act in described casting mold,
Described heat insulating member has through hole, and the inner peripheral surface of described through hole is configured to be connected with the inner peripheral surface of the plug hole of the casting hole of described casting mold and described foundry furnace,
In described casting process, in described casting mold, apply pressure and described molten copper is supplied in described casting mold, in described casting mold, making described molten copper cool, solidify.
2. the manufacture method of the copper alloy wire containing active element according to claim 1, it is characterized in that, the temperature of described casting mold remains on less than 450 DEG C.
3. the manufacture method of the copper alloy wire containing active element according to claim 1 and 2, it is characterized in that, the temperature of the described molten copper of described heat insulating member part is set as the fusing point higher than described molten copper.
4. the manufacture method of the copper alloy wire containing active element according to claim 1 and 2, it is characterized in that, in described casting process, be more than 100mm apart from the head of molten copper in the foundry furnace of the upper end of described casting mold.
5. the manufacture method of the copper alloy wire containing active element according to claim 1 and 2, it is characterized in that, the sectional area ratio Sf/Sc of the sectional area Sf of the sectional area Sc of the horizontal direction of described casting mold and the horizontal direction of described foundry furnace is more than 5.
6. the manufacture method of the copper alloy wire containing active element according to claim 1 and 2, it is characterized in that, continuous melting furnace is set at the leading portion of described foundry furnace and keeps stove, the described molten copper generated in described molten copper generation process is supplied in described foundry furnace continuously.
7. the manufacture method of the copper alloy wire containing active element according to claim 1 and 2, it is characterized in that, described active element is Cr, Zr, Si.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-014397 | 2010-01-26 | ||
| JP2010014397 | 2010-01-26 | ||
| PCT/JP2011/051433 WO2011093310A1 (en) | 2010-01-26 | 2011-01-26 | Process for producing copper alloy wire containing active element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102686337A CN102686337A (en) | 2012-09-19 |
| CN102686337B true CN102686337B (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180005192.XA Active CN102686337B (en) | 2010-01-26 | 2011-01-26 | Process for producing copper alloy wire containing active element |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2529860A4 (en) |
| JP (1) | JP5613907B2 (en) |
| CN (1) | CN102686337B (en) |
| TW (1) | TWI520799B (en) |
| WO (1) | WO2011093310A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2866962B1 (en) | 2012-06-29 | 2017-01-18 | Le Bronze Industriel | Crucible for a machine for continuously casting a bar or a coil of a metal alloy |
| CN103143690A (en) * | 2013-04-02 | 2013-06-12 | 安泰科技股份有限公司 | Continuous casting device and method for directly preparing metal rod or wire |
| WO2015093333A1 (en) * | 2013-12-17 | 2015-06-25 | 三菱マテリアル株式会社 | Method for producing ca-containing copper alloy |
| CN104190891B (en) * | 2014-09-10 | 2016-04-06 | 西安工业大学 | Prepare the device of minor diameter metal single crystal wire rod |
| JP6753647B2 (en) * | 2015-01-07 | 2020-09-09 | 大豊工業株式会社 | Copper alloys for plain bearings and plain bearings |
| CN107138698B (en) * | 2017-05-05 | 2019-04-16 | 哈尔滨工业大学 | A kind of metal or alloy wire rod preparation facilities and the method for preparing metal or alloy wire rod with the device |
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| JPH01246334A (en) * | 1988-03-29 | 1989-10-02 | Nippon Mining Co Ltd | Copper material for acoustic and picture signal transmission wiring |
| JPH06226406A (en) | 1993-02-02 | 1994-08-16 | Mitsubishi Electric Corp | Continuous casting apparatus and continuous casting method |
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| JP4747689B2 (en) * | 2005-06-08 | 2011-08-17 | 三菱マテリアル株式会社 | Continuous production method of copper alloy |
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- 2011-01-26 EP EP11737023.9A patent/EP2529860A4/en not_active Withdrawn
- 2011-01-26 WO PCT/JP2011/051433 patent/WO2011093310A1/en active Application Filing
- 2011-01-26 JP JP2011551866A patent/JP5613907B2/en active Active
- 2011-01-26 TW TW100102869A patent/TWI520799B/en not_active IP Right Cessation
- 2011-01-26 CN CN201180005192.XA patent/CN102686337B/en active Active
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| JPH02307649A (en) * | 1989-05-22 | 1990-12-20 | Shinnitsutou Kinzoku Kk | Method and device for continuously casting copper and copper alloy |
| JPH035046A (en) * | 1989-05-31 | 1991-01-10 | Sumitomo Metal Mining Co Ltd | Graphite mold device for continuously casting metal cast billet |
| JPH10216905A (en) * | 1997-02-05 | 1998-08-18 | Furukawa Electric Co Ltd:The | Method for continuously casting active element-containing copper alloy |
| JPH11170008A (en) * | 1997-12-03 | 1999-06-29 | Kobe Steel Ltd | Mold for horizontal continuous casting |
| JPH11207441A (en) * | 1998-01-26 | 1999-08-03 | Dowa Mining Co Ltd | Method for continuously casting metal and apparatus therefor |
| JP2007144428A (en) * | 2005-11-24 | 2007-06-14 | Mitsubishi Electric Corp | Rare earth-iron-boron-based magnet alloy, and manufacturing method and device for the same alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011093310A1 (en) | 2011-08-04 |
| EP2529860A1 (en) | 2012-12-05 |
| JP5613907B2 (en) | 2014-10-29 |
| EP2529860A4 (en) | 2017-02-22 |
| TW201201925A (en) | 2012-01-16 |
| CN102686337A (en) | 2012-09-19 |
| JPWO2011093310A1 (en) | 2013-06-06 |
| TWI520799B (en) | 2016-02-11 |
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