CN113337753A - Method for preparing B-level copper ingot through horizontal continuous casting - Google Patents
Method for preparing B-level copper ingot through horizontal continuous casting Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C9/00—Alloys based on copper
- C22C9/04—Alloys based on copper with zinc as the next major constituent
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- 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
- B22D11/16—Controlling or regulating processes or operations
- B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
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- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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Abstract
The invention discloses a method for preparing a B-level copper ingot by horizontal continuous casting, which is characterized by comprising the following steps of: the preparation method comprises the following preparation steps: 1) preparing materials: preparing raw materials according to required components, wherein the raw materials comprise: an electrolytic plate, 59-1 iron powder, 0# zinc, 1# lead, an aluminum block, a magnesium block, an aluminum boron alloy, a refining agent, a deslagging agent, borax and a refining agent; 2) smelting: (1) adding an electrolytic plate for melting; (2) after the electrolytic plate is melted, 59-1 iron powder removing mixture and borax are added into a smelting furnace, and the mixture is pressed to 550-650V. After the copper ingot is polished, the thickness is 100mm2On the area of the region, the number of hard points and air holes is within 5, and the grade reaches B-grade ingotThe standard meets the use requirement of producing the copper ingot for environmental protection bath, shortens the working procedure, works continuously, has higher profit margin and strong market competitive advantage.
Description
Technical Field
The invention belongs to the technical field of copper alloy, and particularly relates to a method for preparing a B-level copper ingot by horizontal continuous casting.
Background
The lead brass has excellent cutting processability, good cold and hot casting performance, easy cutting and smooth surface of a processed workpiece, is widely applied to electronic telecommunication, household appliances, aviation, hardware ornaments and bathroom water heating products, particularly has very large usage amount of household bathroom products, and along with the advance of the urbanization process in China and the high-speed development of the real estate market, the bathroom market in China is rapidly developed, according to the statistics of relevant national departments, copper ingots for producing bathroom valves are increased at the speed of more than 20% every year, and the demand of common bathroom products is larger. The existing bathroom products mainly comprise water heating parts, valves, showers and the like. The copper ingot for the bathroom commonly used in China is made of red copper, zinc, lead, silicon, aluminum, processing return materials and the like, and the production process mainly adopts gravity casting, and has the advantages that: 1. the impurity removal is convenient, the open space can be formed along with the crystallization process, the impurities are gathered at the front edge of the crystallization, and the impurities are refined in a similar area; 2. the operation is convenient, and the material enters the die by adopting gravity flow and is naturally cooled and molded. Therefore, the gravity casting method is suitable for B-level copper ingots with low impurity requirement content, but the method has the problems of high cost, low efficiency, incapability of continuous production, long process flow and the like.
The B-level copper ingot is mainly used for water heating components such as bathrooms and valves, the conventional production process comprises smelting, gravity casting, trimming, polishing, inspection, packaging and warehousing, the process is long, the material needs to be fed again after casting is finished, a mold needs to be cleaned, and the like.
Therefore, a method for preparing a grade B copper ingot by horizontal continuous casting is in need of further improvement.
Disclosure of Invention
The invention aims to provide a method for preparing a B-level copper ingot by horizontal continuous casting, which meets the requirements of the B-level copper ingot.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for preparing a B-level copper ingot by horizontal continuous casting is characterized by comprising the following steps: the preparation method comprises the following preparation steps:
1) preparing materials: preparing raw materials according to required components, wherein the raw materials comprise: an electrolytic plate, 59-1 iron powder, 0# zinc, 1# lead, an aluminum block, a magnesium block, an aluminum boron alloy, a refining agent, a deslagging agent, borax and a refining agent;
2) smelting:
(1) adding an electrolytic plate for melting;
(2) after the electrolytic plate is melted, adding 59-1 iron powder removing mixture and borax into a smelting furnace, pressurizing to 550-650V, after 59-1 iron powder removing mixture is completely melted, pressurizing to 750-850V, raising the temperature to 1100-1150 ℃, adding a deslagging agent, then rapidly dredging slag, after the slag is completely dredged, pressurizing to 550-650V, and reducing the temperature to 950-1000 ℃;
(3) after 59-1 iron powder is completely melted, reducing the voltage to 450-540V, reducing the temperature to 900-950 ℃, and sequentially adding an aluminum block, 1# lead and 0# zinc; wherein, the aluminum block is added in the stage;
(4) testing and supplementing materials, after the components are qualified, applying voltage to 750-850V, carrying out large flame spraying for 3-10 seconds, and reducing the voltage to 550-650V at the temperature of 1000-1100 ℃;
(5) transferring the molten copper into a holding furnace, pressing a refining agent into the molten copper by using a bell jar, and taking out after the reaction is finished;
(6) respectively adding magnesium blocks and aluminum boron alloy, and fully stirring;
(7) pressing the refiner in a bell jar, and stirring for 20-40 seconds;
(8) the voltage is increased to 750-850V, the temperature is increased to carry out large flame spraying for 3-10 seconds, the voltage is reduced to 350-450V, the temperature is reduced to 950-1000 ℃, and the holding furnace is kept still for 5-15 min;
(9) the voltage is increased to 550-650V, the throwing cup is qualified, the temperature reaches 1050-1070 ℃, the drawing casting is carried out, the unqualified cup is not qualified, and the refining is continued until the cup is qualified;
3) drawing and casting: after the temperature is qualified, allowing the copper water to flow into a crystallizer to start casting to obtain a copper ingot, wherein the casting speed is 1-10 mm/min, the pitch is 3-10 mm, and the time is 1-3 s;
the copper ingot comprises the following components in percentage by mass: 59% -60%, Al: 0.5-0.8%, Sn + Fe is less than or equal to 1.0%, As is less than or equal to 0.02%, Pb: 1.0 to 1.8 percent of Ni, less than or equal to 0.02 percent of Si, less than or equal to 0.2 percent of Ni, less than or equal to 0.02 percent of Mn, less than or equal to 0.02 percent of Bi, the balance of Zn, and the balance of other impurities within 0.01 percent.
Preferably, the addition amount of the borax is 0.01-0.03% of the total mass of the raw materials, the addition amount of the magnesium blocks is 0.001-0.003% of the total mass of the raw materials, and the addition amount of the aluminum-boron alloy is 0.005-0.015% of the total mass of the raw materials. The magnesium block mainly acts on degassing and oxidizing slag inclusion, magnesium forms magnesium oxide and impurity oxide forms impurity salt, and finally floats on the surface of the melt, the addition amount of magnesium is higher than 0.003 percent, the brittleness of the material is increased, hydrogen and oxygen balance is not used, hydrogen is separated out to form air holes, and the effect of the magnesium block is basically not acted when the addition amount of the magnesium is lower than 0.001 percent.
The aluminum boron alloy and the borax act on refined grains, boron is ionized after the aluminum boron and the borax are melted, the boron can serve as a crystallization core, heterogeneous nucleation and refined grains, the viscosity of copper water can be increased when the aluminum boron alloy is higher than 0.015%, the effect is weak when the aluminum boron alloy is lower than 0.005%, furnace ash can be hardened when the borax is higher than 0.03%, mechanical slag inclusion of the furnace ash is increased, meanwhile, the probability of impurities brought by a melt is increased, and the refining effect is general when the borax is lower than 0.01%.
Preferably, in the step 3), primary cooling water is added into a copper sleeve outside the crystallizer, and secondary cooling water is arranged at a position 30-80 mm away from the bar billet out of the crystallizer; the temperature of the primary cooling water is 10-30 ℃, and the flow of the cooling water is 2-8 m3The temperature of the secondary cooling water is 10-30 ℃, and the flow of the cooling water is 2-8 m3H is used as the reference value. The crystal grains of the ingot are further refined through the control of the cooling water twice, the probability of the existence of impurities in the matrix can be reduced through the grain refinement, dendritic crystal gaps are eliminated through the grain refinement, the possibility that the impurities are mixed in the dendritic crystal gaps and cannot be discharged to the surface of the ingot is eliminated, and the impurities after the grain refinement are extruded to the surface of a cast rod along with the crystallization process.
Preferably, the microstructure of the copper ingot obtained in the step 3) is: both the edge region and the central region of the ingot are equiaxed crystal regions, the grain size of the edge region is below 15 μm, and the grain size of the middle region is below 50 μm.
The microstructure of the copper ingot obtained by the traditional horizontal continuous casting is as follows: the edge area of the ingot is an equiaxed crystal area, the central area of the ingot is an equiaxed crystal area, the middle area between the edge area and the central area of the ingot is columnar crystal, the grain size of the edge area is relatively small, but the middle area is coarse columnar crystal, the grains are coarse, and the impurity removal difficulty in the crystallization process is easily caused. The thick columnar crystal has been eliminated to the copper ingot that this application obtained, and does not have the dendrite space, and the crystalline grain obtains refining, has realized that impurity is arranged along with the crystallization process and has been crowded cast bar surface, has reduced impurity and has existed in the copper ingot.
Preferably, the specification of the copper ingot is phi 15-80 mm, the edge region is a region within 2-5 mm from the surface of the copper ingot, and the rest region is the middle region.
Preferably, the copper ingot obtained in the step 3) is polished at 100mm2The total number of hard particles and air holes in the area is within 5.
Compared with the prior art, the invention has the advantages that: the copper ingot is prepared by controlling the feeding sequence and the technological parameters of horizontal continuous casting, the polishing quality of a copper ingot product is good, no meteor tail and concave and convex defects exist, the surface of a finished product is smooth and delicate, and the later electroplating operation is facilitated; after polishing the copper ingot, at 100mm2On the regional area, the quantity of hard spot and gas pocket is within 5, and the grade reaches B level spindle standard, satisfies production environmental protection copper ingot for the sanitary bath operation requirement, shortens the process moreover, and continuity of operation has higher profit margin, and market competition advantage is strong.
Drawings
FIG. 1 is a metallographic photograph (magnified 200 times) of example 1 of the invention;
FIG. 2 is a metallographic photograph (magnified 200 times) of comparative example 1 of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Example 1
The smelting is carried out by adopting a 2t horizontal continuous casting furnace.
The method for preparing the B-level copper ingot by horizontal continuous casting comprises the following preparation steps:
1) preparing materials: preparing raw materials according to required components, wherein the raw materials comprise: an electrolytic plate, 59-1 iron powder, 0# zinc, 1# lead, an aluminum block, a magnesium block, an aluminum boron alloy, a refining agent, a deslagging agent, borax and a refining agent; 1.5t in total;
2) smelting:
(1) adding an electrolytic plate for melting;
(2) after the electrolytic plate is melted, adding 59-1 iron powder removing mixture and 3kg of borax into a smelting furnace, pressurizing to 600V, after 59-1 iron powder removing mixture is completely melted, pressurizing to 820V, raising the temperature to 1100-1150 ℃, adding a deslagging agent, then rapidly dredging slag, after the slag is completely dredged, pressurizing to 600V, and reducing the temperature to 950-1000 ℃;
(3) after 59-1 iron powder is completely melted, reducing the voltage to 500V, reducing the temperature to 900-950 ℃, and sequentially adding an aluminum block, 1# lead and 0# zinc; wherein, the aluminum block is added in the stage;
(4) testing and supplementing materials, after the components are qualified, increasing the voltage to 800V, carrying out large flame spraying for 5 seconds, reducing the voltage to 600V, and controlling the temperature to be 1000-1100 ℃;
(5) transferring the molten copper into a holding furnace, pressing a refining agent into the molten copper by using a bell jar, and taking out after the reaction is finished;
(6) respectively adding 450g of magnesium block and 1.5kg of aluminum-boron alloy, and fully stirring;
(7) pressing the refiner in by a bell jar, and stirring for 30 seconds;
(8) the voltage is increased to 800V, the temperature is increased to carry out large flame spraying for 5 seconds, the voltage is reduced to 400V, the temperature is reduced to 950 ℃, and the holding furnace is kept still for 5 min;
(9) the voltage is increased to 600V, the throwing cup is qualified, the temperature reaches 1050-1070 ℃, the drawing casting is carried out, the unqualified cup is unqualified, and the refining is continued until the cup is qualified;
3) drawing and casting: after the temperature is qualified, the copper water flows into a crystallizer to start casting to obtain a copper ingot, the casting specification is phi 55mm, the casting speed is 5mm/min, the pitch is 5mm, and the time is 3 s; adding primary cooling water into the copper sleeve outside the crystallizer, and arranging secondary cooling water at a position 50mm away from the bar billet out of the crystallizerCooling water; the temperature of the primary cooling water is 10-30 ℃, and the flow rate of the cooling water is 5m3The temperature of the secondary cooling water is 10-30 ℃, and the flow of the cooling water is 5m3/h。
Example 2
The smelting is carried out by adopting a 2t horizontal continuous casting furnace.
The method for preparing the B-level copper ingot by horizontal continuous casting comprises the following preparation steps:
1) preparing materials: preparing raw materials according to required components, wherein the raw materials comprise: an electrolytic plate, 59-1 iron powder, 0# zinc, 1# lead, an aluminum block, a magnesium block, an aluminum boron alloy, a refining agent, a deslagging agent, borax and a refining agent; 1.5t in total;
2) smelting:
(1) adding an electrolytic plate for melting;
(2) after the electrolytic plate is melted, adding 59-1 iron powder removing mixture and 3.5kg of borax into a smelting furnace, pressurizing to 550V, after 59-1 iron powder removing mixture is completely melted, pressurizing to 850V, raising the temperature to 1100-1150 ℃, adding a deslagging agent, then rapidly dredging slag, after the slag is completely dredged, pressurizing to 600V, and reducing the temperature to 950-1000 ℃;
(3) after the 59-1 iron powder is completely melted, reducing the voltage to 520V, reducing the temperature to 900-950 ℃, and sequentially adding an aluminum block, 1# lead and 0# zinc; wherein, the aluminum block is added in the stage;
(4) testing and supplementing materials, after the components are qualified, increasing the voltage to 800V, carrying out large flame spraying for 5 seconds, reducing the voltage to 600V, and controlling the temperature to be 1000-1100 ℃;
(5) transferring the molten copper into a holding furnace, pressing a refining agent into the molten copper by using a bell jar, and taking out after the reaction is finished;
(6) respectively adding 400g of magnesium blocks and 1.0kg of aluminum-boron alloy, and fully stirring;
(7) pressing the refiner in by a bell jar, and stirring for 30 seconds;
(8) the voltage is increased to 750V, the temperature is increased to carry out large flaming for 5 seconds, the voltage is reduced to 400V, the temperature is reduced to 950-1000 ℃, and the holding furnace is kept still for 10 min;
(9) the voltage is increased to 600V, the throwing cup is qualified, the temperature reaches 1050-1070 ℃, the drawing casting is carried out, the unqualified cup is unqualified, and the refining is continued until the cup is qualified;
3) drawing and casting: after the temperature is qualified, the copper water flows into a crystallizer to start casting to obtain a copper ingot, the casting specification is phi 60mm, the casting speed is 3mm/min, the pitch is 5mm, and the time is 2 s; adding primary cooling water into a copper sleeve outside the crystallizer, and arranging secondary cooling water at a position 30mm away from the bar billet out of the crystallizer; the temperature of the primary cooling water is 10-30 ℃, and the flow of the cooling water is 3m3The temperature of the secondary cooling water is 10-30 ℃, and the flow of the cooling water is 5m3/h。
Example 3
The method for preparing the B-level copper ingot by horizontal continuous casting comprises the following preparation steps:
1) preparing materials: preparing raw materials according to required components, wherein the raw materials comprise: an electrolytic plate, 59-1 iron powder, 0# zinc, 1# lead, an aluminum block, a magnesium block, an aluminum boron alloy, a refining agent, a deslagging agent, borax and a refining agent; 1.5t in total;
2) smelting:
(1) adding an electrolytic plate for melting;
(2) after the electrolytic plate is melted, adding 59-1 iron powder removing mixture and 2.5Kg of borax into a smelting furnace, pressurizing to 650V, after 59-1 iron powder removing mixture is completely melted, pressurizing to 750V, raising the temperature to 1100-1150 ℃, adding a deslagging agent, then rapidly dredging slag, after the slag is completely dredged, pressurizing to 600V, and reducing the temperature to 950-1000 ℃;
(3) after the iron powder of 59-1 is completely melted, reducing the voltage to 470V, reducing the temperature to 900-950 ℃, and sequentially adding an aluminum block, 1# lead and 0# zinc; wherein, the aluminum block is added in the stage;
(4) testing and supplementing materials, after the components are qualified, increasing the voltage to 800V, carrying out large flame spraying for 10 seconds, reducing the voltage to 600V, and controlling the temperature to be 1000-1100 ℃;
(5) transferring the molten copper into a holding furnace, pressing a refining agent into the molten copper by using a bell jar, and taking out after the reaction is finished;
(6) respectively adding 400g of magnesium blocks and 1.1kg of aluminum-boron alloy, and fully stirring;
(7) pressing the refiner in a bell jar, and stirring for 20 seconds;
(8) the voltage is increased to 800V, the temperature is increased to carry out large flame spraying for 10 seconds, the voltage is reduced to 400V, the temperature is reduced to 950-1000 ℃, and the holding furnace is kept still for 15 min;
(9) the voltage is increased to 600V, the throwing cup is qualified, the temperature reaches 1050-1070 ℃, the drawing casting is carried out, the unqualified cup is unqualified, and the refining is continued until the cup is qualified;
3) drawing and casting: after the temperature is qualified, the copper water flows into a crystallizer to start casting to obtain a copper ingot, the casting specification is phi 20mm, the casting speed is 4mm/min, the pitch is 10mm, and the time is 1 s; adding primary cooling water into a copper sleeve outside the crystallizer, and arranging secondary cooling water at a position 60mm away from the bar billet out of the crystallizer; the temperature of the primary cooling water is 10-30 ℃, and the flow rate of the cooling water is 7m3The temperature of the secondary cooling water is 10-30 ℃, and the flow of the cooling water is 4m3/h。
Comparative example
The smelting adopts 2t for gravity casting.
1. Raw materials: 1.5t of ingredient
(1) An electrolytic plate, 59-1 iron-removing powder, 0# zinc, 1# lead, an aluminum block, a magnesium block and an aluminum boron alloy;
(2) refining agent, deslagging agent, borax and refining agent.
2. Smelting:
(1) adding an electrolytic plate for melting;
(2) after the electrolytic plate is melted, adding 59-1 iron powder into a smelting furnace, heating, and applying voltage to 800V;
(3) after the raw materials are completely melted, slag is fished, and after the slag is fished, the voltage is reduced to 400V, the temperature is 1000-950 ℃, and aluminum, lead and zinc are sequentially added;
(4) testing and supplementing materials, after the components are qualified, adjusting the voltage to 800V, reducing the voltage by large flame spraying for about 5 seconds, wherein the voltage is lower than 600V, and the temperature is 1050-1000 ℃;
(5) pressing 7.5kg of refining agent into molten copper by using a bell jar furnace, and taking out after the reaction is finished;
(6) after refining, respectively adding 450g of magnesium blocks and 1.5kg of aluminum-boron alloy at constant temperature, and fully stirring;
(7) pressing in 2.5kg of domestic refiner with bell jar, stirring for 25 s, and standing for 10 min;
(8) casting when the throwing cup is qualified and the temperature reaches the requirement (1050 ℃ -1070 ℃), and refining when the throwing cup is unqualified until the throwing cup is qualified.
The central region of the copper ingot in example 1 was observed to obtain a microstructure, and as can be seen from fig. 1, the grain size of the horizontally cast ingot was 30 μm, and the spheroidization tendency of the grains was very significant, which means that the copper ingot had a good impurity removal effect during continuous casting, and finally a microstructure with refined grains was obtained.
The microstructure of the comparative example copper ingot was observed by taking the central region position, and as can be seen from fig. 2, the crystal grains of the cast and produced B-grade ingot were short and rod-like and uniform in size.
B-level ingot casting detection standard: selecting a small section of sample, polishing, and observing at 100mm2And judging whether the defects such as hard points, air holes and the like on the area of the region reach the standard, judging within 5 points to be qualified, and judging more than 5 points to be unqualified. As can be seen from Table 2, the number of hard spots and pores in this example is 5 or less, and the quality is acceptable.
TABLE 1 copper ingot composition (wt%) of inventive and comparative examples
TABLE 2 microstructures of inventive and comparative examples
Claims (6)
1. A method for preparing a B-level copper ingot by horizontal continuous casting is characterized by comprising the following steps: the preparation method comprises the following preparation steps:
1) preparing materials: preparing raw materials according to required components, wherein the raw materials comprise: an electrolytic plate, 59-1 iron powder, 0# zinc, 1# lead, an aluminum block, a magnesium block, an aluminum boron alloy, a refining agent, a deslagging agent, borax and a refining agent;
2) smelting:
(1) adding an electrolytic plate for melting;
(2) after the electrolytic plate is melted, adding 59-1 iron powder removing mixture and borax into a smelting furnace, pressurizing to 550-650V, after 59-1 iron powder removing mixture is completely melted, pressurizing to 750-850V, raising the temperature to 1100-1150 ℃, adding a deslagging agent, then rapidly dredging slag, after the slag is completely dredged, pressurizing to 550-650V, and reducing the temperature to 950-1000 ℃;
(3) after 59-1 iron powder is completely melted, reducing the voltage to 450-540V, reducing the temperature to 900-950 ℃, and sequentially adding an aluminum block, 1# lead and 0# zinc; wherein, the aluminum block is added in the stage;
(4) testing and supplementing materials, after the components are qualified, applying voltage to 750-850V, carrying out large flame spraying for 3-10 seconds, and reducing the voltage to 550-650V at the temperature of 1000-1100 ℃;
(5) transferring the molten copper into a holding furnace, pressing a refining agent into the molten copper by using a bell jar, and taking out after the reaction is finished;
(6) respectively adding magnesium blocks and aluminum boron alloy, and fully stirring;
(7) pressing the refiner in a bell jar, and stirring for 20-40 seconds;
(8) the voltage is increased to 750-850V, the temperature is increased to carry out large flame spraying for 3-10 seconds, the voltage is reduced to 350-450V, the temperature is reduced to 950-1000 ℃, and the holding furnace is kept still for 5-15 min;
(9) the voltage is increased to 550-650V, the throwing cup is qualified, the temperature reaches 1050-1070 ℃, the drawing casting is carried out, the unqualified cup is not qualified, and the refining is continued until the cup is qualified;
3) drawing and casting: after the temperature is qualified, allowing the copper water to flow into a crystallizer to start casting to obtain a copper ingot, wherein the casting speed is 1-10 mm/min, the pitch is 3-10 mm, and the time is 1-3 s;
the copper ingot comprises the following components in percentage by mass: 59% -60%, Al: 0.5-0.8%, Sn + Fe is less than or equal to 1.0%, As is less than or equal to 0.02%, Pb: 1.0 to 1.8 percent of Ni, less than or equal to 0.02 percent of Si, less than or equal to 0.2 percent of Ni, less than or equal to 0.02 percent of Mn, less than or equal to 0.02 percent of Bi, the balance of Zn, and the balance of other impurities within 0.01 percent.
2. The method of producing a grade B copper ingot by horizontal continuous casting according to claim 1, wherein: the addition amount of the borax is 0.01-0.03% of the total mass of the raw materials, the addition amount of the magnesium blocks is 0.001-0.003% of the total mass of the raw materials, and the addition amount of the aluminum-boron alloy is 0.005-0.015% of the total mass of the raw materials.
3. The method of producing a grade B copper ingot by horizontal continuous casting according to claim 1, wherein: in the step 3), primary cooling water is added into a copper sleeve outside the crystallizer, and secondary cooling water is arranged at a position 30-80 mm away from the bar blank discharging out of the crystallizer; the temperature of the primary cooling water is 10-30 ℃, and the flow of the cooling water is 2-8 m3The temperature of the secondary cooling water is 10-30 ℃, and the flow of the cooling water is 2-8 m3/h。
4. The method of producing a grade B copper ingot by horizontal continuous casting according to claim 1, wherein: the microstructure of the copper ingot obtained in the step 3) is as follows: both the edge region and the central region of the ingot are equiaxed crystal regions, the grain size of the edge region is below 15 μm, and the grain size of the middle region is below 50 μm.
5. The method of producing a grade B copper ingot by horizontal continuous casting according to claim 4, wherein: the specification of the copper ingot is phi 15-80 mm, the edge area is an area within 2-5 mm from the surface of the copper ingot, and the rest area is the middle area.
6. A method for producing a grade B copper ingot by horizontal continuous casting according to any one of claims 1 to 5, wherein: polishing the copper ingot obtained in the step 3) to 100mm2The total number of hard particles and air holes in the area is within 5.
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Citations (8)
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| JPS5360316A (en) * | 1976-11-11 | 1978-05-30 | Satoshi Shimoda | Bearing materials of copperr tin prepared in atmosphere at high temperature and high pressure |
| JPS57194235A (en) * | 1981-05-26 | 1982-11-29 | Furukawa Electric Co Ltd:The | Copper alloy for tube of radiator for car |
| FR2515544A1 (en) * | 1981-10-30 | 1983-05-06 | Griset Ets | Continuous casting plant, esp. for copper alloys - where multipart graphite mould is pressed against cooling elements to improve heat extn., so casting speeds can be increased |
| CN102345025A (en) * | 2011-09-30 | 2012-02-08 | 中宇建材集团有限公司 | Preparation method of DR (dezincification resistant) copper ingot |
| CN103060572A (en) * | 2013-01-28 | 2013-04-24 | 梧州漓佳铜棒有限公司 | Method for producing copper bar alloy material by horizontal continuous casting production of scrap copper |
| CN104550792A (en) * | 2014-10-17 | 2015-04-29 | 江西鸥迪铜业有限公司 | Horizontal continuous casting copper ingot production technology |
| CN108273973A (en) * | 2018-03-22 | 2018-07-13 | 宁波金田铜业(集团)股份有限公司 | A method of tellurium bronze stick is produced using horizontal continuous casting process |
| CN108405820A (en) * | 2018-03-23 | 2018-08-17 | 江西鸥迪铜业有限公司 | A kind of horizontal casting Rolling Production brass tube technique |
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2021
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5360316A (en) * | 1976-11-11 | 1978-05-30 | Satoshi Shimoda | Bearing materials of copperr tin prepared in atmosphere at high temperature and high pressure |
| JPS57194235A (en) * | 1981-05-26 | 1982-11-29 | Furukawa Electric Co Ltd:The | Copper alloy for tube of radiator for car |
| FR2515544A1 (en) * | 1981-10-30 | 1983-05-06 | Griset Ets | Continuous casting plant, esp. for copper alloys - where multipart graphite mould is pressed against cooling elements to improve heat extn., so casting speeds can be increased |
| CN102345025A (en) * | 2011-09-30 | 2012-02-08 | 中宇建材集团有限公司 | Preparation method of DR (dezincification resistant) copper ingot |
| CN103060572A (en) * | 2013-01-28 | 2013-04-24 | 梧州漓佳铜棒有限公司 | Method for producing copper bar alloy material by horizontal continuous casting production of scrap copper |
| CN104550792A (en) * | 2014-10-17 | 2015-04-29 | 江西鸥迪铜业有限公司 | Horizontal continuous casting copper ingot production technology |
| CN108273973A (en) * | 2018-03-22 | 2018-07-13 | 宁波金田铜业(集团)股份有限公司 | A method of tellurium bronze stick is produced using horizontal continuous casting process |
| CN108405820A (en) * | 2018-03-23 | 2018-08-17 | 江西鸥迪铜业有限公司 | A kind of horizontal casting Rolling Production brass tube technique |
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