CN113865342B - Maintenance method of cold crucible - Google Patents
Maintenance method of cold crucible Download PDFInfo
- Publication number
- CN113865342B CN113865342B CN202111135069.1A CN202111135069A CN113865342B CN 113865342 B CN113865342 B CN 113865342B CN 202111135069 A CN202111135069 A CN 202111135069A CN 113865342 B CN113865342 B CN 113865342B
- Authority
- CN
- China
- Prior art keywords
- crucible
- insulating material
- wall
- kerf
- cold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/10—Crucibles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/10—Crucibles
- F27B2014/108—Cold crucibles (transparent to electromagnetic radiations)
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention relates to the technical field of crucibles, and discloses a maintenance method of a cold crucible, which comprises the following steps: taking out the crucible bottom; cleaning residual materials on the inner wall of the crucible; removing the insulating cladding coated on the crucible wall; taking out the old first insulating material in the kerf, and cleaning the kerf; polishing the bottom of the crucible; correcting deformed split copper blocks; measuring and cutting new first insulating material, and filling the new first insulating material into the kerfs of the crucible wall; reinstalling the crucible bottom; re-fixing the crucible wall by adopting a fixing device; filling new second insulating material in the gap between the crucible wall and the crucible bottom; adjusting the roundness of the crucible, and fine-adjusting the cutting seam; re-cladding the crucible wall with an insulating cladding; standing and air-drying, and finally removing the fixing device. The cold crucible kerf maintained by the invention has uniform size, can reduce the risks of crucible clamping and leakage, ensures the uniformity of smelting alloy, avoids pollution of the smelting alloy, and prevents the damage of a crucible and equipment.
Description
Technical Field
The invention relates to the technical field of crucibles, in particular to a maintenance method of a cold crucible.
Background
Cold crucible suspension smelting refers to a new technology of placing a water-cooled red copper crucible with an axial slit in an alternating magnetic field of a coil to perform induction smelting on furnace burden. The technology is particularly suitable for smelting or purifying active metals, refractory alloys, high-purity materials and high-concentration pollution materials.
However, as the number of heats used increases, the deformation of the crucible causes the slit in the axial direction of the crucible to become uneven, which causes the crucible to have the following risks when smelting: firstly, the intensity of a magnetic field penetrating into a crucible through each kerf can be changed, and the electromagnetic stirring effect generated in a molten pool after metal alloy in the crucible is melted can be changed, so that the uniformity of alloy components is affected; secondly, the metal melt permeates into the kerf, a clamping condition occurs during discharging, the operation time is influenced, and the risk of material pollution is increased; finally, the heavy deformation of the crucible joint can generate metal melt leakage, the light part shields the magnetic field at the position, and the heavy part burns the insulating cladding at the periphery of the crucible, breaks down the induction coil and damages the equipment.
Disclosure of Invention
In order to solve the technical problems, the invention provides a maintenance method of a cold crucible, which can timely maintain the cold crucible, reduce the risks of crucible clamping and leakage, ensure the uniformity of smelting alloy, avoid pollution of the smelting alloy and prevent damage to the crucible and equipment.
The technical scheme adopted for solving the technical problems is as follows:
the cold crucible comprises a crucible wall and a crucible bottom, wherein a slit is formed in the crucible wall and is coated with an insulating cladding, a first insulating material is filled in the slit, a split copper block is arranged at the crucible bottom, and a second insulating material is filled between the crucible bottom and the crucible wall. The maintenance method comprises the following steps:
taking out the crucible bottom;
cleaning residual materials on the inner wall of the crucible;
removing the insulating cladding coated on the crucible wall;
taking out the old first insulating material in the kerf, and cleaning the kerf;
polishing the bottom of the crucible;
correcting deformed split copper blocks;
measuring and cutting new first insulating material, and filling the new first insulating material into the kerfs of the crucible wall;
reinstalling the crucible bottom;
re-fixing the crucible wall by adopting a fixing device;
filling new second insulating material in the gap between the crucible wall and the crucible bottom;
adjusting the roundness of the crucible, and fine-adjusting the cutting seam;
re-cladding the crucible wall with an insulating cladding;
standing and air-drying, and finally removing the fixing device
Preferably, the insulating cladding comprises glass fiber insulating cloth wound on the crucible wall and a binder coated on the glass fiber insulating cloth, wherein the binder is a 1:1 mixture of epoxy resin and curing agent.
Preferably, when the old first insulating material in the kerf is taken out, a shovel blade is adopted to gently pry off the top of the kerf, and then the old first insulating material is taken out integrally.
Preferably, when the kerfs are cleaned, a shovel blade is used for cleaning each kerf from top to bottom, and then a wool wheel polishing machine is used for polishing the inner wall of the crucible.
Preferably, when correcting deformed split copper blocks, a straight steel plate is firstly adopted to be stuck to the bottom of the crucible, and then a hand hammer is used for lightly knocking on the deformed split copper blocks until the split copper blocks with larger deformation are corrected.
Preferably, when cutting the new first insulating material, the outline of the old first insulating material in each cutting seam is drawn, then a cutting machine is used for cutting the new panel, burrs on the inner sides of the new panel are polished one by one, and the smoothness of the inner walls of the crucible after filling is ensured.
Preferably, the first insulating material used for filling the kerf at the bottom of the crucible is processed to a thickness of 0.6-0.8mm by a utility knife when the kerf is filled, then the kerf is slightly pried by a shovel knife, and a new first insulating material is plugged in the kerf.
Preferably, the bottom end and the top end of the crucible are sequentially tightened by the clamp for fixation after all the kerfs are filled.
Preferably, for the slit which is slightly deformed after tightening, the insulating material is needed to be continuously plugged, and the elevation angle of the finally formed crucible mouth is ensured to be 2-5 degrees.
Preferably, when the roundness of the crucible is adjusted, the diameter between every two opposite split copper pipes is measured by a caliper, then the roundness of the crucible is finely adjusted by a soft rubber hammer, and finally the final adjustment is carried out by a roundness regulator.
Compared with the prior art, the beneficial effects of the method are as follows: the invention can regularly maintain the cold crucible, the joint cutting size of the cold crucible after maintenance is uniform, the risks of crucible clamping and leakage can be reduced, the uniformity of smelting alloy is ensured, the pollution of the smelting alloy is avoided, and the damage of the crucible and equipment is prevented.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
According to the maintenance method of the cold crucible in the preferred embodiment of the invention, the cold crucible comprises a crucible wall and a crucible bottom, a slit is formed in the crucible wall and is coated with an insulating cladding, a first insulating material is filled in the slit, split copper blocks are arranged at the crucible bottom, and a copper pipe is welded below each copper block and used for circulating cooling water. The second insulating material is filled between the crucible bottom and the crucible wall, the first insulating material and the second insulating material are made of the same material, and the maintenance method comprises the following steps:
(1) And taking out the crucible bottom. When the crucible is taken out, the crucible is inverted, the fastening screw is loosened, and then the crucible bottom is pulled out reversely.
(2) And cleaning material residues on the inner wall of the crucible. The residual materials on the inner wall of the crucible are gently scraped by a scraper, and then the inner wall of the crucible is polished by a wool wheel polishing machine.
(3) And removing the insulating cladding coated on the crucible wall. The insulating cladding comprises glass fiber insulating cloth wound on the crucible wall and a binder coated on the glass fiber insulating cloth, wherein the binder is a 1:1 mixture of epoxy resin and a curing agent.
(4) The old first insulation material in the kerf is removed and the kerf is cleaned. When the old first insulating material in the kerf is taken out, a shovel blade is adopted to gently pry the top of the kerf, and then the old first insulating material is taken out integrally.
When the kerfs are cleaned, a shovel blade is firstly used for cleaning each kerf from top to bottom, and then a wool wheel polishing machine is used for polishing the inner wall of the crucible.
(5) Polishing the crucible bottom by adopting a wool wheel polishing machine to ensure the smoothness of the surface.
(6) Correcting deformed split copper blocks. When correcting deformed split copper pipes, firstly, straight steel plates are stuck to the bottom of a crucible, and then, the deformed split copper blocks are lightly knocked by a hand hammer until the split copper blocks with larger deformation are corrected. At the same time, the slit width of the crucible after correction should be ensured to be about 1.3 mm.
(7) Measuring and cutting new first insulating material, and filling the slits with the new first insulating material. When the new first insulating material is cut, the outline of the old first insulating material in each cutting seam is drawn, then the cutting machine is used for cutting the new panel, burrs on one inward side are polished one by one, smoothness of the inner wall of the crucible after filling is ensured, and the subsequent situation of material clamping is prevented. When filling the kerf, the first insulating material used for filling the kerf at the bottom of the crucible is firstly processed to a thickness of 0.6-0.8mm, preferably 0.7mm by using a utility knife for ensuring the shape of the small bottom opening of the crucible, then the kerf is slightly pried by using a shovel knife, and then a new first insulating material is plugged in the kerf.
(8) The crucible bottom was reinstalled and aligned.
(9) And (5) fixing the crucible wall again by adopting a fixing device. The fixing device adopts the clamp, and the bottom end and the top end of the crucible are sequentially tightened by the clamp to fix after all the cutting joints are filled, so that the shape of the crucible is ensured.
(10) And filling new second insulating material in the gap between the crucible wall and the crucible bottom.
(11) And (5) adjusting the roundness of the crucible, and fine-adjusting the cutting seam. After the fixing, the roundness of the crucible is required to be adjusted, when the roundness of the crucible is adjusted, the diameter between every two opposite split copper pipes is measured by a caliper, then the roundness of the crucible is finely adjusted by a soft rubber hammer, and finally the final adjustment is carried out by a roundness regulator.
Meanwhile, for the slit which is slightly deformed after tightening, the first insulating material needs to be continuously plugged, so that the elevation angle of the finally formed crucible mouth is ensured to be 2-5 degrees, preferably 3 degrees. The shape of the crucible after molding is 'small bottom and big opening', and smooth discharging in the later operation process is ensured.
(12) And (4) re-cladding the insulating cladding on the crucible wall to prevent the crucible from deforming.
(13) Standing and air-drying, and removing the fixing device.
In addition, a plurality of split copper blocks are arranged at the bottom of the crucible, gaps are arranged between adjacent split copper blocks, a third insulating material is filled in the gaps, the damage degree of the third insulating material is checked during maintenance, and if the damage is serious, the deformed split copper blocks are required to be replaced after correction; if the third insulating material is not damaged or damaged less severely, no replacement is required. The third insulating material is the same as the first insulating material and the second insulating material.
The invention can regularly maintain the cold crucible, the joint cutting size of the cold crucible after maintenance is uniform, the risks of crucible clamping and leakage can be reduced, the uniformity of smelting alloy is ensured, the pollution of the smelting alloy is avoided, and the damage of the crucible and equipment is prevented.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (10)
1. The utility model provides a maintenance method of cold crucible, cold crucible includes crucible wall and crucible bottom, be equipped with the joint cut and cladding on the crucible wall and have insulating cladding, the intussuseption of joint cut is filled with first insulating material, the crucible bottom is equipped with split copper billet, the crucible bottom with fill between the crucible wall and have second insulating material, its characterized in that: the maintenance method comprises the following steps:
taking out the crucible bottom;
cleaning residual materials on the inner wall of the crucible;
removing the insulating cladding coated on the crucible wall;
taking out the old first insulating material in the kerf, and cleaning the kerf;
polishing the bottom of the crucible;
correcting deformed split copper blocks;
measuring and cutting new first insulating material, and filling the new first insulating material into the kerfs of the crucible wall;
reinstalling the crucible bottom;
re-fixing the crucible wall by adopting a fixing device;
filling new second insulating material in the gap between the crucible wall and the crucible bottom;
adjusting the roundness of the crucible, and fine-adjusting the cutting seam;
re-cladding the crucible wall with an insulating cladding;
standing and air-drying, and finally removing the fixing device.
2. The method for maintaining a cold crucible as set forth in claim 1, wherein: the insulating cladding comprises glass fiber insulating cloth wound on the crucible wall and a binder coated on the glass fiber insulating cloth, wherein the binder is a 1:1 mixture of epoxy resin and a curing agent.
3. The method for maintaining a cold crucible as set forth in claim 1, wherein: when the old first insulating material in the kerf is taken out, a shovel blade is adopted to gently pry the top of the kerf, and then the old first insulating material is taken out integrally.
4. The method for maintaining a cold crucible as set forth in claim 1, wherein: when the kerfs are cleaned, a shovel blade is firstly used for cleaning each kerf from top to bottom, and then a wool wheel polishing machine is used for polishing the inner wall of the crucible.
5. The method for maintaining a cold crucible as set forth in claim 1, wherein: when the deformed split copper block is corrected, a straight steel plate is firstly adopted to be stuck to the bottom of the crucible, and then a hand hammer is used for lightly knocking on the deformed split copper block until the split copper block with larger deformation is corrected.
6. The method for maintaining a cold crucible as set forth in claim 1, wherein: when cutting the new first insulating material, firstly drawing the outline of the old first insulating material in each cutting seam, then cutting the new panel by a cutting machine, and polishing burrs on the inner side of the new panel one by one to ensure the smoothness of the inner wall of the crucible after filling.
7. The method for maintaining a cold crucible as set forth in claim 1, wherein: when filling the kerf, the first insulating material used for filling the kerf at the bottom of the crucible is processed to a thickness of 0.6-0.8mm by using a cutter, then the kerf is slightly pried by using a shovel blade, and a new first insulating material is plugged in the kerf.
8. The method for maintaining a cold crucible as set forth in claim 1, wherein: and after all the kerfs are filled, the bottom end and the top end of the crucible are sequentially tightened by using a clamp for fixing.
9. The method for maintaining a cold crucible as set forth in claim 8, wherein: and for the slit which is slightly deformed after tightening, the insulating material needs to be continuously plugged, so that the elevation angle of the finally formed crucible mouth is ensured to be 2-5 degrees.
10. The method for maintaining a cold crucible as set forth in claim 1, wherein: when the roundness of the crucible is adjusted, the diameter between every two opposite split copper pipes is measured by a caliper, then the roundness of the crucible is finely adjusted by a soft rubber hammer, and finally final adjustment is carried out by a roundness regulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111135069.1A CN113865342B (en) | 2021-09-27 | 2021-09-27 | Maintenance method of cold crucible |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111135069.1A CN113865342B (en) | 2021-09-27 | 2021-09-27 | Maintenance method of cold crucible |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113865342A CN113865342A (en) | 2021-12-31 |
| CN113865342B true CN113865342B (en) | 2023-05-30 |
Family
ID=78991258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111135069.1A Active CN113865342B (en) | 2021-09-27 | 2021-09-27 | Maintenance method of cold crucible |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113865342B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605917A (en) * | 2016-03-25 | 2016-05-25 | 江苏立美航材科技有限公司 | Fixation method capable of implementing quick replacement of vacuum furnace crucible |
| CN112304083A (en) * | 2020-11-09 | 2021-02-02 | 辽宁红银金属有限公司 | Rapid pretreatment method of formed crucible for vacuum smelting |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR8704913A (en) * | 1987-09-24 | 1989-03-28 | Carlos Garcia Vicente | TILT AND FIXED CRUCKLE OVEN WITH MATERIAL RECOVERY TRAY |
| CN1320972C (en) * | 2005-09-02 | 2007-06-13 | 哈尔滨工业大学 | Rectangular cold crucible system suitable for continuous fusion casting directional freeze |
| JP2007240102A (en) * | 2006-03-10 | 2007-09-20 | Daido Steel Co Ltd | Ingot production method using cold crucible melting device |
| CN101832709A (en) * | 2009-03-11 | 2010-09-15 | 贵州贵航能发装备制造有限公司 | Single-waterway split cold crucible for induction melting and manufacture method thereof |
| CN102728823B (en) * | 2011-05-03 | 2016-01-20 | 北京幻响神州科技股份有限公司 | Induction cold crucible technology is utilized to prepare the method for the rareearth super magnetostrictive alloy of crystallographic orientation |
| KR101346614B1 (en) * | 2013-09-10 | 2014-01-02 | 승현창 | Metal melting furnace of direct heating method |
| CN209614222U (en) * | 2018-12-29 | 2019-11-12 | 先导薄膜材料有限公司 | Gating apparatus |
-
2021
- 2021-09-27 CN CN202111135069.1A patent/CN113865342B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605917A (en) * | 2016-03-25 | 2016-05-25 | 江苏立美航材科技有限公司 | Fixation method capable of implementing quick replacement of vacuum furnace crucible |
| CN112304083A (en) * | 2020-11-09 | 2021-02-02 | 辽宁红银金属有限公司 | Rapid pretreatment method of formed crucible for vacuum smelting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113865342A (en) | 2021-12-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102717171B (en) | Plug welding repair technology for mammoth converter shell perforation | |
| CN102274949B (en) | Method for repairing breakage of roller head and roller neck of roller in recasting method | |
| CN113865342B (en) | Maintenance method of cold crucible | |
| CN110814481B (en) | Butt welding method of auxiliary electrode for titanium alloy | |
| CN100493797C (en) | Method of welding electrode for vacuum consumable arc-melting | |
| US9962760B2 (en) | Titanium slab for hot rolling produced by electron-beam melting furnace, process for production thereof, and process for rolling titanium slab for hot rolling | |
| CN110756964A (en) | Reverse deformation treatment process before welding of H-shaped steel structure | |
| CN104162761B (en) | flywheel crack repairing method | |
| CN112439972A (en) | Welding method for solving out-of-tolerance problem of crack arrest steel butt welding groove gap | |
| CN105710497A (en) | Splicing technology of H-shaped steel | |
| CN102248281B (en) | Thick plate joint welding method | |
| CN114393186A (en) | Method for preventing casting breakout of wide and thick slab continuous casting machine | |
| JP2005103604A (en) | Continuous casting method, continuous casting cast slab, and steel plate | |
| KR20040084990A (en) | Welding shield gas and welding method | |
| CN105671244A (en) | Spherical hinge support replacement method for 120-ton or above converter | |
| CN115283785A (en) | Butt welding method of auxiliary electrode for VAR | |
| CN109262210A (en) | A kind of aluminium electrolytic cell cathode bus burning powder welding procedure | |
| JP2011058023A (en) | Method and an apparatus for producing consumable electrode | |
| CN106541246A (en) | The method that aluminum cell bus-bar sweat soldering is repaired under electromagnetic field environment | |
| CN217290383U (en) | Conical bottom blowing quick dismounting device for silicon-on-metal bag | |
| CN110484742A (en) | A kind of method that electron-beam smelting High Purity prepares Fe-W intermediate alloy | |
| CN217499323U (en) | Device for removing impurities from bubbles in metal smelting process | |
| CN110116256A (en) | A kind of welding procedure of centrifugally cast pipe | |
| CN216191881U (en) | A foreign matter blocks subassembly and glass forming equipment for glass forming draw gear | |
| JP7139877B2 (en) | Ladle refining method for molten steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230620 Address after: In the workshop of Leading Film Materials Co., Ltd. at the intersection of Longzihu Road and Tongnenenebb Huainan Road, Xinzhan District, Hefei City, Anhui Province, 230000 Patentee after: Leading Film Materials (Anhui) Co.,Ltd. Address before: 230000 northwest corner of the intersection of Longzihu road and tonghuai South Road, Xinzhan District, Hefei City, Anhui Province Patentee before: Pilot film materials Co.,Ltd. |