CN114682991A - Repairing method of copper crystallizer for EB furnace - Google Patents
Repairing method of copper crystallizer for EB furnace Download PDFInfo
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- CN114682991A CN114682991A CN202210441638.3A CN202210441638A CN114682991A CN 114682991 A CN114682991 A CN 114682991A CN 202210441638 A CN202210441638 A CN 202210441638A CN 114682991 A CN114682991 A CN 114682991A
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- crystallizer
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- copper crystallizer
- copper
- repairing
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 51
- 239000010949 copper Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 238000007751 thermal spraying Methods 0.000 claims abstract description 5
- 238000003754 machining Methods 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 53
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 24
- 230000007547 defect Effects 0.000 claims description 21
- 239000011248 coating agent Substances 0.000 claims description 18
- 238000000576 coating method Methods 0.000 claims description 18
- 238000005498 polishing Methods 0.000 claims description 14
- 239000011159 matrix material Substances 0.000 claims description 13
- 229910052786 argon Inorganic materials 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 11
- 238000004321 preservation Methods 0.000 claims description 10
- 238000007750 plasma spraying Methods 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 6
- 238000005488 sandblasting Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 238000011282 treatment Methods 0.000 claims description 6
- 244000137852 Petrea volubilis Species 0.000 claims description 5
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 230000004907 flux Effects 0.000 claims description 2
- 238000007747 plating Methods 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 abstract description 8
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005266 casting Methods 0.000 abstract description 2
- 229910001338 liquidmetal Inorganic materials 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 11
- 238000003723 Smelting Methods 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 238000007670 refining Methods 0.000 description 4
- 230000008439 repair process Effects 0.000 description 4
- 238000010894 electron beam technology Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Plasma & Fusion (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The invention discloses a method for repairing a copper crystallizer for an EB furnace, and belongs to the technical field of vacuum metallurgical equipment. In the ingot casting production process of the EB furnace, liquid metal is rapidly cooled and crystallized after contacting with a copper crystallizer, and is solidified and pulled out along the direction of the copper crystallizer; in the process, the metal ingot and the inner wall of the copper crystallizer are seriously rubbed to damage the inner wall of the copper crystallizer; in order to reduce the cost and efficiently utilize damaged equipment, the method for repairing the copper crystallizer for the EB furnace comprises the methods of surfacing, heat treatment, surface machining and thermal spraying, so that the repaired crystallizer is more in line with the production requirement, and has the advantages of long service life, high quality, cost saving and environmental protection.
Description
Technical Field
The invention discloses a method for repairing a copper crystallizer for an EB furnace, and belongs to the technical field of vacuum metallurgical equipment.
Background
The electron beam cold bed smelting furnace is a smelting device which uses the kinetic energy of electron beam current moving at high speed as a heat source, and has the advantages of high power density, high surface temperature of a molten pool, good degassing effect, low limitation on the shape and structure of raw materials and the like, the device takes a vacuum smelting chamber system as a base body, one side of the vacuum smelting chamber system is connected with a horizontal feeding system, the other side of the vacuum smelting chamber system is provided with a vacuum system, the top of the smelting chamber is provided with 3 sets of cold cathode electron gun systems and a vertical scrap feeding system, a cold bed system and a protective cover are arranged inside the smelting chamber, a crystallizer system is arranged at the bottom of the smelting chamber, and a continuous ingot dragging crystallizer system is arranged below the smelting chamber system; the cooling system cools the structures and components needing cooling. The equipment is also equipped with a hydraulic system, a compressed air system, an electrical control system, an observation device and the like. The electron beam cold bed furnace is characterized in that the melting, refining and ingot casting solidification processes are separated, namely, the melted material enters a refining area of a cold bed for refining, and finally flows into a crystal to be solidified into an ingot.
The method comprises the steps of loading a bar to be melted into a horizontal feeding system, loading scrap to be melted into a vertical feeding system, vacuumizing a melting chamber by a vacuum unit, starting melting, after the vacuum degree requirement is met, enabling a melting electron gun system to work, gradually establishing a molten pool in a cooling bed, enabling a refining electron gun system to work, enabling the liquid level of the molten pool of the cooling bed to rise to an overflow port along with the melting process, enabling liquid metal to drip into a crystallizer, enabling a crystallization electron gun to work, and continuously pulling down a dummy ingot head in an ingot dragging system along with the melting of raw materials to obtain an ingot with a preset shape and size.
In the process of pulling out the cast ingot, the cast ingot and the inner wall of the copper crystallizer rub with each other, and the local part of the copper crystallizer is easy to soften, deform, crack or even damage, thereby affecting the ingot plate and the quality of the plate and the surface. After the defects are generated, the original copper crystallizer can not meet the working conditions any more.
Disclosure of Invention
The invention provides a method for repairing a copper crystallizer for an EB furnace, aiming at the damage to the inner wall of the copper crystallizer caused by pulling out a metal ingot after metal crystallization, the method adopts a method of surface overlaying of the defect of the copper crystallizer and heat preservation to repair the surface defect, preserves heat to remove internal stress, polishes and smoothes the surface after a numerical control machine processes and repairs the surface, and uses a method of spraying a layer of metal coating on the surface to repair the damaged copper crystallizer, thereby greatly prolonging the service life of the copper crystallizer, reducing the service life of equipment, conforming to the concept of green environmental protection, and concretely comprising the following steps:
(1) the method of overlaying is adopted, the surface of the defect is cleaned before welding, the oxidized surface and impurities are removed, and the surface is polished by coarse abrasive paper and kept rough.
(2) Surfacing welding is carried out by using a welding wire made of the same material as the crystallizer, and a leak is filled on the damaged surface of the copper crystallizer; welding a layer of welding flux on the surface of the matrix by an argon arc welding method, wherein the thickness is 5-20mm, and then carrying out heat treatment on the copper crystallizer, wherein the heat preservation temperature is 900-.
(3) And repeating the previous step, continuously overlaying the surface of the steel plate, and carrying out heat preservation and heat treatment until the defects are completely filled.
(4) And (4) putting the copper crystallizer obtained in the step (3) into a box-type resistance furnace, and heating and preserving heat to eliminate internal stress.
(5) And machining the supplemented surface to be flat through a numerical control machine tool, and then plating a Ni60 alloy coating on the surface by using a thermal spraying method.
Preferably, the heat treatment in step (4) of the present invention is carried out under the following conditions: the temperature is 700 ℃ and 900 ℃, and the heat preservation time is 1-2 hours.
Preferably, the specific process of the plasma spraying of the invention is as follows: and after polishing and cleaning the surface to be sprayed, carrying out sand blasting treatment, and preparing a nickel alloy coating on the surface of the matrix by using a plasma spray welding machine.
Preferably, the plasma spraying parameters of the plasma spraying are as follows: the current is 110-120A, the voltage is 30-40V, the welding distance is 4-8mm, the welding gun speed is 40-60 mm/min, and the spraying is carried out under the protection of argon.
Preferably, the thickness of the plasma spraying Ni60 alloy coating is 0.8-2 mm.
The method can completely fill the surface damage caused by friction force when the metal ingot is pulled out by using surfacing repair, and the surfacing is carried out by cladding the metal which is similar to or identical with the parent metal on the surface of the copper crystallizer.
The invention has the beneficial effects that:
(1) according to the crystallizer, in the surfacing process, through multiple heat treatments, the bonding performance of the welding layer and the matrix is improved, the welding layer is effectively prevented from falling off, and the use performance of the copper crystallizer is improved.
(2) The invention adopts the thermal spraying technology on the metal surface, and a layer of nickel alloy coating is sprayed on the crystallizer surface, and the coating has excellent wear resistance and corrosion resistance, and changes the problem that the copper surface is easy to soften and deform to a certain extent
(3) The thermal spraying process used in the invention enhances the wear resistance of the inner surface of the copper crystallizer, and the copper crystallizer is tightly combined with the copper crystallizer, thereby improving the service time of the copper crystallizer; the nickel alloy coating has excellent wear resistance, corrosion resistance and high-temperature oxidation resistance, can greatly improve the service life of the copper crystallizer, and improves the quality of cast ingots.
(4) The method solves the problem that the copper crystallizer cannot be used due to abrasion, prolongs the strength and the service life of the copper crystallizer, ensures that the repaired copper crystallizer has longer service time and better performance than the copper crystallizer before, ensures the quality of the produced cast ingot to be better, and conforms to the concept of environmental protection.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the scope of the present invention is not limited to the examples.
Example 1
Adopting a surfacing method, surfacing by using argon arc welding, cleaning the surface of a defect before welding, removing an oxidized surface and impurities, polishing by using coarse sand paper and keeping the surface rough, surfacing by using a welding wire made of the same material as the crystallizer, firstly welding a layer to cover the surface of the defect, wherein the thickness of the welding layer is 5mm, then sending the welding layer into a box type resistance furnace, heating to 900 ℃, preserving heat for 1h, air-cooling, polishing a surface oxide layer, continuously surfacing on the surface of the defect and carrying out heat preservation treatment until the defect is completely covered, and repairing the inner surface of the copper crystallizer; placing the mixture in a box type resistance furnace, heating the mixture to 700 ℃, preserving heat for 2 hours, air-cooling the mixture to room temperature, and taking out the mixture; then, processing and flattening the inner surface through a numerical control machine tool, and polishing the inner surface to be smooth; cleaning the surface to be sprayed by adopting a plasma spraying method, performing sand blasting on the surface of a copper matrix, preparing a Ni60 alloy coating on the surface of the matrix by utilizing a plasma spray welding machine, spraying under the protection of argon at the current of 110A, the voltage of 30V, the welding distance of 4-7mm and the welding gun speed of 40 mm/min, wherein the thickness of the coating is 0.8 mm.
The service time of the copper crystallizer repaired by the method can be prolonged by 25 percent.
Example 2
Adopting a surfacing method, surfacing by using argon arc welding, cleaning the surface of a defect before welding, removing an oxidized surface and impurities, polishing by using coarse sand paper and keeping the surface rough, surfacing by using a welding wire made of the same material as the crystallizer, firstly welding a layer to cover the surface of the defect, wherein the thickness of the welding layer is 12mm, then sending the welding layer into a box type resistance furnace, heating to 960 ℃, preserving heat for 1h, air-cooling, polishing a surface oxide layer, continuously surfacing on the surface of the defect and carrying out heat preservation treatment until the defect is completely covered, and repairing the inner surface of the copper crystallizer; placing in a box type resistance furnace, heating to 800 ℃, preserving heat for 1.5h, air cooling to room temperature, and taking out; then, processing and flattening the inner surface through a numerical control machine tool, and polishing the inner surface to be smooth; cleaning the surface to be sprayed by adopting a plasma spraying method, performing sand blasting on the surface of a copper matrix, preparing a Ni60 alloy coating on the surface of the matrix by utilizing a plasma spray welding machine, spraying under the protection of argon at the current of 120A, the voltage of 35V, the welding distance of 5-7mm and the welding gun speed of 50 mm/min, wherein the thickness of the coating is 1 mm.
The service time of the copper crystallizer repaired by the method can be prolonged by 30 percent.
Example 3
Adopting a surfacing method, surfacing by using argon arc welding, cleaning the surface of a defect before welding, removing an oxidized surface and impurities, polishing by using coarse sand paper and keeping the surface rough, surfacing by using a welding wire made of the same material as the crystallizer, firstly welding a layer to cover the surface of the defect, wherein the thickness of the welding layer is 20mm, then sending the welding layer into a box type resistance furnace, heating to 980 ℃, preserving heat for 1h, air-cooling, polishing a surface oxide layer, continuously surfacing on the surface of the defect and carrying out heat preservation treatment until the defect is completely covered, and repairing the inner surface of the copper crystallizer; placing in a box-type resistance furnace, heating to 900 ℃, preserving heat for 1h, air cooling to room temperature, and taking out; then, machining and flattening the inner surface through a numerical control machine tool, and polishing the inner surface to be smooth; cleaning the surface to be sprayed by adopting a plasma spraying method, performing sand blasting on the surface of a copper matrix, preparing a Ni60 alloy coating on the surface of the matrix by utilizing a plasma spray welding machine, spraying under the protection of argon at the current of 120A, the voltage of 40V, the welding distance of 4-8mm and the welding gun speed of 60 mm/min, wherein the thickness of the coating is 2 mm.
The service time of the copper crystallizer repaired by the method can be prolonged by 25 percent.
Comparative example 1
Adopting a surfacing method, using argon arc welding for surfacing, cleaning the surface of the defect before welding, removing an oxidized surface and impurities, polishing by using coarse sand paper and keeping the surface rough, and using a welding wire made of the same material as the crystallizer for surfacing to cover the surface of the defect; then placing the mixture in a box type resistance furnace, heating the mixture to 900 ℃, preserving heat for 1 hour, air-cooling the mixture to room temperature and taking out the mixture; then, processing and flattening the inner surface through a numerical control machine tool, and polishing the inner surface to be smooth; cleaning the surface to be sprayed by adopting a plasma spraying method, performing sand blasting treatment on the surface of a copper matrix, preparing a Ni60 alloy coating on the surface of the matrix by utilizing a plasma spray welding machine, spraying under the protection of argon at the current of 120A, the voltage of 30V, the welding distance of 5-7mm and the welding gun speed of 50 mm/min, wherein the thickness of the coating is 10 mm.
In the use process of the copper crystallizer, the welding layer is peeled off, and the production quality of the cast ingot is influenced.
Claims (5)
1. A method for repairing a copper crystallizer for an EB furnace is characterized by comprising the following steps:
(1) cleaning the surface of the defect by adopting a surfacing method before welding, removing an oxidized surface and impurities, polishing by using coarse sand paper and keeping the surface rough;
(2) surfacing by using a welding wire made of the same material as the crystallizer, and filling up a leak on the damaged surface of the copper crystallizer; welding a layer of welding flux on the surface of the matrix by an argon arc welding method, wherein the thickness is 5-20mm, and then carrying out heat treatment on the copper crystallizer, wherein the heat preservation temperature is 900-;
(3) repeating the previous step, continuously overlaying the surface of the steel plate and carrying out heat preservation and heat treatment until the defects are completely filled;
(4) putting the copper crystallizer obtained in the step (3) into a box-type resistance furnace, and heating and preserving heat to eliminate internal stress;
(5) and machining the supplemented surface to be flat through a numerical control machine tool, and then plating a Ni60 alloy coating on the surface by using a thermal spraying method.
2. The method for repairing the copper crystallizer for the EB furnace according to claim 1, which is characterized in that: the heat treatment in the step (4) is carried out under the following conditions: the temperature is 700 ℃ and 900 ℃, and the heat preservation time is 1-2 hours.
3. The method for repairing the copper crystallizer for the EB furnace according to claim 1, which is characterized in that: the plasma spraying process comprises the following specific steps: and (3) after polishing and cleaning the surface to be sprayed, carrying out sand blasting treatment, and preparing a nickel alloy coating on the surface of the matrix by using a plasma spray welding machine.
4. The method for repairing the copper crystallizer for the EB furnace according to claim 1, which is characterized in that: the spraying parameters are as follows: the current is 110-120A, the voltage is 30-40V, the welding distance is 4-8mm, the welding gun speed is 40-60 mm/min, and the spraying is carried out under the protection of argon.
5. The method for repairing the copper crystallizer for the EB furnace according to claim 1, which is characterized in that: the thickness of the Ni60 alloy coating is 0.8-2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210441638.3A CN114682991A (en) | 2022-04-26 | 2022-04-26 | Repairing method of copper crystallizer for EB furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210441638.3A CN114682991A (en) | 2022-04-26 | 2022-04-26 | Repairing method of copper crystallizer for EB furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114682991A true CN114682991A (en) | 2022-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210441638.3A Pending CN114682991A (en) | 2022-04-26 | 2022-04-26 | Repairing method of copper crystallizer for EB furnace |
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| CN (1) | CN114682991A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1781643A (en) * | 2004-11-30 | 2006-06-07 | 宝山钢铁股份有限公司 | Repairing method for crystallizer copper plate |
| CN101524746A (en) * | 2009-04-03 | 2009-09-09 | 鞍山金维表面工程技术有限公司 | Technological method for repairing continuous caster crystallizer copperplate by coating WC alloy |
| CN101551197A (en) * | 2009-05-14 | 2009-10-07 | 瓮福（集团）有限责任公司 | A pyrite-based sulphuric acid roaster cooling calandria repairing method |
| CN101797676A (en) * | 2010-01-13 | 2010-08-11 | 西安热工研究院有限公司 | Repair and surface protection process of desulfuration recycle pump |
| CN103521995A (en) * | 2013-09-30 | 2014-01-22 | 邯钢集团邯宝钢铁有限公司 | Metallurgy sintering fuel breaker roll repairing technology |
| CN104278269A (en) * | 2013-07-10 | 2015-01-14 | 上海宝钢工业技术服务有限公司 | Preparation method for surface-reinforcing coating of copper crystallizer |
| JP2017217684A (en) * | 2016-06-10 | 2017-12-14 | 三島光産株式会社 | Repair method of continuous casting mold |
| CN109604927A (en) * | 2018-12-19 | 2019-04-12 | 安徽泰尔表面工程技术有限公司 | The build-up welding repair method of continuous cast mold short side copper sheet side |
| CN113308662A (en) * | 2021-05-26 | 2021-08-27 | 泰尔(安徽)工业科技服务有限公司 | Spraying repair method for short-edge copper plate side surface of continuous casting crystallizer |
| CN113681233A (en) * | 2021-08-26 | 2021-11-23 | 南京工业职业技术大学 | Rapid and efficient local repair method for crystallizer copper plate |
-
2022
- 2022-04-26 CN CN202210441638.3A patent/CN114682991A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1781643A (en) * | 2004-11-30 | 2006-06-07 | 宝山钢铁股份有限公司 | Repairing method for crystallizer copper plate |
| CN101524746A (en) * | 2009-04-03 | 2009-09-09 | 鞍山金维表面工程技术有限公司 | Technological method for repairing continuous caster crystallizer copperplate by coating WC alloy |
| CN101551197A (en) * | 2009-05-14 | 2009-10-07 | 瓮福（集团）有限责任公司 | A pyrite-based sulphuric acid roaster cooling calandria repairing method |
| CN101797676A (en) * | 2010-01-13 | 2010-08-11 | 西安热工研究院有限公司 | Repair and surface protection process of desulfuration recycle pump |
| CN104278269A (en) * | 2013-07-10 | 2015-01-14 | 上海宝钢工业技术服务有限公司 | Preparation method for surface-reinforcing coating of copper crystallizer |
| CN103521995A (en) * | 2013-09-30 | 2014-01-22 | 邯钢集团邯宝钢铁有限公司 | Metallurgy sintering fuel breaker roll repairing technology |
| JP2017217684A (en) * | 2016-06-10 | 2017-12-14 | 三島光産株式会社 | Repair method of continuous casting mold |
| CN109604927A (en) * | 2018-12-19 | 2019-04-12 | 安徽泰尔表面工程技术有限公司 | The build-up welding repair method of continuous cast mold short side copper sheet side |
| CN113308662A (en) * | 2021-05-26 | 2021-08-27 | 泰尔(安徽)工业科技服务有限公司 | Spraying repair method for short-edge copper plate side surface of continuous casting crystallizer |
| CN113681233A (en) * | 2021-08-26 | 2021-11-23 | 南京工业职业技术大学 | Rapid and efficient local repair method for crystallizer copper plate |
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