CN114871393A - Method for protecting crystallizer by nitrogen to reduce loss - Google Patents
Method for protecting crystallizer by nitrogen to reduce loss Download PDFInfo
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- CN114871393A CN114871393A CN202210448916.8A CN202210448916A CN114871393A CN 114871393 A CN114871393 A CN 114871393A CN 202210448916 A CN202210448916 A CN 202210448916A CN 114871393 A CN114871393 A CN 114871393A
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- nitrogen
- crystallizer
- copper sleeve
- heat insulation
- water
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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
- B22D11/006—Continuous casting of metals, i.e. casting in indefinite lengths of tubes
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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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- Manufacture And Refinement Of Metals (AREA)
Abstract
A method of protecting a crystallizer with nitrogen to reduce losses, comprising the steps of: a. preparing for nitrogen circulation supply, namely arranging a nitrogen circulation groove at the outlet of the crystallizer, uniformly distributing nitrogen inlet holes in the nitrogen circulation groove, and communicating the nitrogen inlet holes with the nitrogen circulation groove to circularly supply nitrogen; b. preparing cooling water supply, namely modifying a plurality of water inlet and outlet ports of the water jacket into smooth water inlet and outlet ports with inclination of 45-degree angle and rotating shapes so as to ensure that cooling water flows smoothly and uniformly into the water jacket for cooling; c. the copper sleeve is shaped in a liquid-state and solid-state mode, high-pressure cooling water is arranged outside the copper sleeve, and high-temperature copper water is arranged inside the copper sleeve; the inner hole of the high-temperature resistant graphite gasket of the mold body is reduced, so that the heat insulation area of the copper sleeve at the heat insulation end is enlarged, the sealing and heat insulation effects are realized, and the copper sleeve is effectively protected to reduce the loss of the crystallizer. The method has high work efficiency, effectively increases the heat insulation area of the copper sleeve at the heat insulation end, and effectively protects the copper sleeve; and the cooling is smooth and uniform, the surface of the tube blank is smooth, the cost is saved, and the quality and the casting efficiency are improved.
Description
Technical Field
The invention relates to a method for protecting a crystallizer by nitrogen to reduce loss.
Background
When the copper liquid crystallization process is manufactured, the horizontal drawing furnace is frequently replaced with the graphite crystallizer, so that the crystallizer is high in use cost, short in service life, low in production efficiency, easy to break and poor in assembly and sealing, a copper sleeve is easy to melt and deform, a small amount of cooling water leaks and gasifies, and the service life of the crystallizer is shortened; the water gap angle is not too straight, so that when the tube blank is cast, cooling water is blocked, cooling is not thorough, the tube blank is easy to have quality problems of cracks, roughness, scabbing and the like, and cooling water in the water jacket flows unsmoothly and unevenly; therefore, we developed a nitrogen-protected crystallizer to reduce losses.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method for protecting a crystallizer by nitrogen to reduce loss, the method has high working efficiency, and the heat insulation area of a copper sleeve at a heat insulation end is effectively enlarged, so that the effects of sealing and heat insulation are achieved, and the copper sleeve is effectively protected; and the cooling is smooth and uniform, the surface of the tube blank is smooth, the die change times are reduced, the cost is saved, the quality and the casting efficiency are improved, and the like.
In order to achieve the above object, the present invention adopts a technical scheme of providing a method for protecting a crystallizer by nitrogen to reduce loss, which comprises the following steps:
a. preparing for nitrogen circulation supply, namely forming a nitrogen circulation groove at the outlet of the crystallizer, uniformly distributing nitrogen inlet holes in the nitrogen circulation groove, and communicating the nitrogen inlet holes with the nitrogen circulation groove to circularly supply nitrogen;
b. preparing cooling water supply, namely modifying a plurality of water inlet and outlet ports of the water jacket into smooth water inlet and outlet ports with inclination of 45-degree angle and rotating shapes so as to ensure that cooling water flows smoothly and uniformly into the water jacket for cooling;
c. the copper sleeve is shaped in a liquid-state and solid-state mode, high-pressure cooling water is arranged outside the copper sleeve, and high-temperature copper water is arranged inside the copper sleeve; the inner hole of the high-temperature resistant graphite gasket of the mold body is reduced, so that the heat insulation area of the copper sleeve at the heat insulation end is enlarged, the sealing and heat insulation effects are realized, and the copper sleeve is effectively protected to reduce the loss of the crystallizer.
In one or more embodiments of the present invention, the specification of the high temperature resistant graphite gasket in step a is Φ 149mm × Φ 121mm × 3.5 mm.
In one or more embodiments of the invention, the specification of the high temperature resistant graphite gasket in the step a is Φ 178mm × Φ 148mm × 3.5 mm.
In one or more embodiments of the present invention, a nitrogen circulation tank with a diameter of phi 3mm is opened at a position 39mm away from the port of the crystallizer in the step A.
In one or more embodiments of the invention, 8 nitrogen inlet holes with phi 2mm are drilled in the nitrogen circulating groove in a distributed mode.
Compared with the background technology, the invention has the following effects:
due to the adoption of the scheme, the method has high working efficiency, and the heat insulation area of the copper sleeve at the heat insulation end is effectively enlarged, so that the effects of sealing and heat insulation are achieved, and the copper sleeve is effectively protected; the cooling is smooth and uniform, the surface of the tube blank is smooth, the die change times are reduced, the cost is saved, the quality and the casting efficiency are improved, and the like; therefore, it has excellent performance in technical, economical and practical aspects.
Drawings
FIG. 1 is a block diagram of a method for nitrogen blanketing a crystallizer to reduce losses in an embodiment of the present invention.
FIG. 2 is a cross-sectional view of the structure of a crystallizer in a method for protecting the crystallizer with nitrogen to reduce losses according to one embodiment of the present invention;
FIG. 3 is a schematic view of the structure of FIG. 2 taken along line A-A;
FIG. 4 is a schematic view of the structure of FIG. 2 taken along line B-B;
FIG. 5 is an enlarged view at C of FIG. 2;
those skilled in the art can appreciate that the shapes, configurations and arrangements of the various elements shown in the figures are not necessarily to scale, and that the dimensions of the various elements and components of the figures may be exaggerated or minimized to more clearly illustrate the embodiments of the present invention described herein.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout.
The orientation shown in the drawings is not to be construed as limiting the specific scope of the invention, but is for the best understanding of the preferred embodiments only, and changes in location or addition of numbers or structural simplifications may be made to the product parts shown in the drawings.
The relation of "connected" between the components shown in the drawings and described in the specification can be understood as fixedly connected or detachably connected or integrally connected; the connecting elements can be directly connected or connected through an intermediate medium, and persons skilled in the art can understand the connecting relation according to specific conditions, and can use the connecting elements in a screwed connection or riveting connection or welding connection or clamping connection or embedding connection mode to replace different embodiments in a proper mode.
The terms of orientation such as up, down, left, right, top, bottom, and the like in the description and the orientation shown in the drawings, may be used for direct contact or contact with each other through another feature therebetween; above may be directly above and obliquely above, or it simply means above the other; other orientations may be understood by analogy.
The technical scheme and the beneficial effects of the invention are clearer and clearer by further describing the specific implementation mode of the invention with the accompanying drawings of the specification; and are intended to be illustrative of the invention and not to be construed as limiting the invention.
Specific embodiments are described below with reference to fig. 1-5, however, one skilled in the art will readily appreciate that the detailed description given herein with respect to these figures is for illustrative purposes only and should not be construed as limiting, and that the present invention preferably provides embodiments of a method for nitrogen shielding a crystallizer to reduce attrition, comprising the steps of:
a. preparing for nitrogen circulating supply, namely arranging a nitrogen circulating groove 2 at the outlet of the crystallizer 1, uniformly distributing nitrogen inlet holes 3 in the nitrogen circulating groove 2, and communicating the nitrogen inlet holes with the nitrogen circulating groove 3 to circularly supply nitrogen;
b. preparing cooling water supply, namely modifying a plurality of water inlet and outlet ports of the water jacket into smooth water inlet and outlet ports with inclination of 45-degree angle and rotating shapes so as to ensure that cooling water flows smoothly and uniformly into the water jacket for cooling;
c. the copper sleeve is shaped in a liquid-state and solid-state mode, high-pressure cooling water is arranged outside the copper sleeve, and high-temperature copper water is arranged inside the copper sleeve; the inner hole of the high-temperature resistant graphite gasket of the die body is reduced, so that the heat insulation area of the copper sleeve at the heat insulation end is enlarged, the sealing and heat insulation effects are realized, the copper sleeve is effectively protected, and the loss of the crystallizer is reduced.
In the step A, the specification of the high-temperature resistant graphite gasket is phi 149mm multiplied by phi 121mm
3.5mm, and the specification of the high-temperature resistant graphite gasket in the step A is phi 178mm multiplied by phi 148mm multiplied by 3.5mm and the like according to the requirements of different pipe diameters, and the adjustment is carried out according to the requirements of different pipe diameters.
In this embodiment, a nitrogen circulation tank 2 with a diameter of phi 3mm is opened at a position 39mm away from the port of the crystallizer 1 in the step a. And 8 nitrogen inlet holes with phi of 2mm are drilled in the nitrogen circulating tank 2 in a distributed manner.
In combination with the above and with all accompanying drawings, further description of the implementation:
a crystallizer mould is improved, a copper inlet pipe is added, a nitrogen circulating groove with the diameter of 3mm is formed in the position 39mm away from a port of the crystallizer, and 8 nitrogen inlet holes with the diameter of phi 2mm are uniformly distributed and drilled in the nitrogen circulating groove. The water jacket used by the horizontal drawing furnace is provided with two water inlets and two water outlets. If the water inlet angle is not too straight, when the pipe blank is cast, cooling water is blocked, cooling is not thorough, the pipe blank is easy to crack, roughen, scar and other quality problems, the mold changing cost is high, the production efficiency is low, and the quality is unstable, so that the four water inlet and outlet ports of the water jacket are reformed into smooth water inlet and outlet ports with the inclination of 45-degree angle and rotating shapes, the phenomenon that cooling water in the water jacket flows through unsmoothly and unevenly is solved, the water jacket is cooled smoothly and uniformly, the surface of the pipe blank is smooth, the mold changing times are reduced, the cost is saved, and the quality and the casting efficiency are improved. The copper sleeve is shaped in a liquid-state solidified state, high-pressure cooling water is arranged outside the copper sleeve, high-temperature copper water is arranged inside the copper sleeve, if the copper sleeve is not well assembled and sealed, the copper sleeve is easy to melt and deform, the cooling water is slightly leaked and gasified, the service life of the crystallizer is shortened, the inner hole of the high-temperature resistant graphite gasket can be reduced, the specification of phi 149 multiplied by phi 121 multiplied by 3.5 can be changed according to the processing requirement, the heat insulation area of the copper sleeve at the heat insulation end is increased, and thus the effects of sealing and heat insulation are achieved, and the copper sleeve is effectively protected. The specification of phi 178 multiplied by phi 148 multiplied by 3.5 can be changed according to the requirement, the sealing is more compact, and the function of protecting the mould is played. The method has high work efficiency, effectively enlarges the heat insulation area of the copper sleeve at the heat insulation end, plays a role in sealing and heat insulation and effectively protects the copper sleeve; the cooling is smooth and uniform, the surface of the tube blank is smooth, the die change times are reduced, the cost is saved, the quality and the casting efficiency are improved, and the like; therefore, it has excellent performance in technical, economical and practical aspects.
The foregoing description, for purposes of explanation, used specific nomenclature to provide a thorough understanding of the embodiments. However, it will be apparent to one skilled in the art that the specific details are not required in order to practice the embodiments. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and modifications and substitutions based on the known art are possible within the scope of the present invention, which is defined by the claims.
Claims (5)
1. A method of protecting a crystallizer with nitrogen to reduce losses, comprising the steps of:
a. preparing for nitrogen circulation supply, namely arranging a nitrogen circulation groove at the outlet of the crystallizer, uniformly distributing nitrogen inlet holes in the nitrogen circulation groove, and communicating the nitrogen inlet holes with the nitrogen circulation groove to circularly supply nitrogen;
b. preparing cooling water supply, namely modifying a plurality of water inlet and outlet ports of the water jacket into smooth water inlet and outlet ports with inclination of 45-degree angle and rotating shapes so as to ensure that cooling water flows smoothly and uniformly into the water jacket for cooling;
c. the copper sleeve is shaped in a liquid-state and solid-state mode, high-pressure cooling water is arranged outside the copper sleeve, and high-temperature copper water is arranged inside the copper sleeve; the inner hole of the high-temperature resistant graphite gasket of the mold body is reduced, so that the heat insulation area of the copper sleeve at the heat insulation end is enlarged, the sealing and heat insulation effects are realized, and the copper sleeve is effectively protected to reduce the loss of the crystallizer.
2. The method of claim 1 for protecting a crystallizer from losses, characterized in that: the specification of the high-temperature resistant graphite gasket in the step A is phi 149mm multiplied by phi 121mm multiplied by 3.5 mm.
3. The method of claim 1 for protecting a crystallizer from losses, characterized in that: the specification of the high-temperature resistant graphite gasket in the step A is phi 178mm multiplied by phi 148mm multiplied by 3.5 mm.
4. A method of protecting a crystallizer from nitrogen losses as claimed in claim 3, wherein: and in the step A, a nitrogen circulating groove with the diameter of phi 3mm is arranged at the position 39mm away from the port of the crystallizer.
5. The method of claim 4 for protecting a crystallizer from losses, wherein: and 8 nitrogen inlet holes with phi of 2mm are drilled in the nitrogen circulating groove in a distributed mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210448916.8A CN114871393A (en) | 2022-04-27 | 2022-04-27 | Method for protecting crystallizer by nitrogen to reduce loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210448916.8A CN114871393A (en) | 2022-04-27 | 2022-04-27 | Method for protecting crystallizer by nitrogen to reduce loss |
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| CN114871393A true CN114871393A (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210448916.8A Pending CN114871393A (en) | 2022-04-27 | 2022-04-27 | Method for protecting crystallizer by nitrogen to reduce loss |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU406631A1 (en) * | 1971-12-27 | 1973-11-21 | CRYSTALIZER | |
| JPH0810906A (en) * | 1994-06-29 | 1996-01-16 | Nippon Steel Corp | Cooling structure of mold for continuous casting |
| CN201529757U (en) * | 2009-11-13 | 2010-07-21 | 宁波金田铜管有限公司 | Horizontal continuous casting graphite crystallizer |
| CN102764862A (en) * | 2012-07-24 | 2012-11-07 | 青岛中冶新材料科技有限公司 | Horizontal continuous casting graphite crystallizer by aid of nitrogen protection method |
| CN202606823U (en) * | 2012-05-07 | 2012-12-19 | 金川集团股份有限公司 | Multistation tool system for ingot |
| CN103658572A (en) * | 2013-12-29 | 2014-03-26 | 山东亨圆铜业有限公司 | Copper pipe horizontal continuous casting gas shield crystallizer and method for preparing copper alloy pipe through copper pipe horizontal continuous casting gas shield crystallizer |
| CN105033199A (en) * | 2015-09-01 | 2015-11-11 | 无锡隆达金属材料有限公司 | Graphite crystallizer for horizontal continuous casting |
| CN210996360U (en) * | 2019-09-05 | 2020-07-14 | 广东海亮铜业有限公司 | Porous horizontal continuous casting crystallizer |
| CN212598745U (en) * | 2020-06-29 | 2021-02-26 | 沈阳有色金属加工有限公司 | Novel crystallizer for producing pure copper and alloy cast ingot thereof |
-
2022
- 2022-04-27 CN CN202210448916.8A patent/CN114871393A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU406631A1 (en) * | 1971-12-27 | 1973-11-21 | CRYSTALIZER | |
| JPH0810906A (en) * | 1994-06-29 | 1996-01-16 | Nippon Steel Corp | Cooling structure of mold for continuous casting |
| CN201529757U (en) * | 2009-11-13 | 2010-07-21 | 宁波金田铜管有限公司 | Horizontal continuous casting graphite crystallizer |
| CN202606823U (en) * | 2012-05-07 | 2012-12-19 | 金川集团股份有限公司 | Multistation tool system for ingot |
| CN102764862A (en) * | 2012-07-24 | 2012-11-07 | 青岛中冶新材料科技有限公司 | Horizontal continuous casting graphite crystallizer by aid of nitrogen protection method |
| CN103658572A (en) * | 2013-12-29 | 2014-03-26 | 山东亨圆铜业有限公司 | Copper pipe horizontal continuous casting gas shield crystallizer and method for preparing copper alloy pipe through copper pipe horizontal continuous casting gas shield crystallizer |
| CN105033199A (en) * | 2015-09-01 | 2015-11-11 | 无锡隆达金属材料有限公司 | Graphite crystallizer for horizontal continuous casting |
| CN210996360U (en) * | 2019-09-05 | 2020-07-14 | 广东海亮铜业有限公司 | Porous horizontal continuous casting crystallizer |
| CN212598745U (en) * | 2020-06-29 | 2021-02-26 | 沈阳有色金属加工有限公司 | Novel crystallizer for producing pure copper and alloy cast ingot thereof |
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