CN115896388B - Slag-sticking-preventing coating for sublance - Google Patents
Slag-sticking-preventing coating for sublance Download PDFInfo
- Publication number
- CN115896388B CN115896388B CN202211442741.6A CN202211442741A CN115896388B CN 115896388 B CN115896388 B CN 115896388B CN 202211442741 A CN202211442741 A CN 202211442741A CN 115896388 B CN115896388 B CN 115896388B
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- CN
- China
- Prior art keywords
- layer
- sublance
- thermal spraying
- transition layer
- slag
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- 238000000576 coating method Methods 0.000 title claims abstract description 18
- 239000011248 coating agent Substances 0.000 title claims abstract description 16
- 230000007704 transition Effects 0.000 claims abstract description 39
- 239000002893 slag Substances 0.000 claims abstract description 23
- 238000007751 thermal spraying Methods 0.000 claims description 29
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 claims description 22
- 239000003921 oil Substances 0.000 claims description 17
- 229910000484 niobium oxide Inorganic materials 0.000 claims description 15
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 8
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 7
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Inorganic materials O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 claims description 7
- 239000011812 mixed powder Substances 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 17
- 239000010959 steel Substances 0.000 abstract description 17
- 229920002545 silicone oil Polymers 0.000 abstract description 8
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000005498 polishing Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
Landscapes
- Coating By Spraying Or Casting (AREA)
Abstract
The invention relates to the technical field of sublance, in particular to a sublance slag-sticking-preventing coating. Including setting up the first transition layer in sublance body lower part outside, be provided with the oil reservoir outside the first transition layer, the oil reservoir outside is provided with the second transition layer, the second transition layer outside is provided with the micropore layer, first transition layer, oil reservoir, second transition layer and micropore in situ are soaked with the silicone oil. The sublance slag-sticking-preventing coating can ensure that the steel slag is not easy to adhere to a sublance body.
Description
Technical Field
The invention relates to the technical field of sublance, in particular to a sublance slag-sticking-preventing coating.
Background
The sublance is a lance-shaped object which can be lifted and inserted into the converter and comprises a lance body, wherein the lance body is a water-cooled three-layer steel pipe, and a probe is temporarily inserted into the lower end of the lance body during each measurement so as to measure the temperature, oxygen content or carbon content of molten steel. When in measurement, the lower part of the probe is inserted into molten steel of a converter, the lower end of the gun body is only inserted into the converter but not inserted into the molten steel, and a certain distance is kept between the lower end of the gun body and the liquid level of the molten steel, at the moment, the reaction in the converter is continuously carried out, steel slag splashes and adheres to the gun body under the action of oxygen jet, so that the gun body of the sublance is adhered with steel slag, and if the adhered slag is serious, the normal production and use of the sublance are affected, so that a slag scraper is generally arranged above a sublance mouth to scrape the adhered slag. However, sometimes the bonding of the steel slag and the gun body is relatively firm, the slag scraper is difficult to scrape off, and the steel slag is required to be manually treated, so that the steel slag is inconvenient and dangerous.
Disclosure of Invention
Aiming at the technical defects, the invention provides the sublance slag-sticking-preventing coating, so that the steel slag is not easy to adhere to a sublance body.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides an antiseized sediment coating of sublance, includes the first transition layer of setting in sublance body lower part outside, be provided with the oil reservoir outside the first transition layer, the oil reservoir outside is provided with the second transition layer, the second transition layer outside is provided with the microporous layer, first transition layer, oil reservoir, second transition layer and microporous layer are immersed with the silicone oil.
Further optimizing the technical scheme, the first transition layer is a thermal spraying nickel-aluminum layer.
According to the technical scheme, the oil storage layer is a thermal spraying aluminum layer, and the porosity of the thermal spraying aluminum layer is 90%.
Further optimizing the technical scheme, the second transition layer is a thermal spraying nickel-aluminum layer.
Further optimizing the technical scheme, the microporous layer is a thermal spraying niobium oxide layer, and the porosity of the thermal spraying niobium oxide layer is 0.6%.
Further optimizing the technical scheme, the thermal spraying niobium oxide layer is obtained by polishing after thermal spraying mixed powder of niobium pentoxide powder and niobium powder, wherein the niobium pentoxide powder accounts for 97% of the total weight, and the niobium powder accounts for 3% of the total weight.
Compared with the prior art, the invention has the following advantages: the gun body of the sublance is sequentially provided with a first transition layer, an oil storage layer, a second transition layer and a microporous layer, the layers are immersed with silicone oil, a silicone oil film is formed outside the microporous layer, and moreover, steel slag is not easy to adhere to the microporous layer due to polishing treatment outside the microporous layer, so that the gun body of the sublance is not easy to adhere to the steel slag.
Drawings
FIG. 1 is a schematic structural view of a sublance slag-resistant coating.
Fig. 2 is an enlarged view of fig. 1 at i.
In the figure: 1. a sub-gun body; 2. a first transition layer; 3. an oil reservoir; 4. a second transition layer; 5. a microporous layer.
Detailed Description
The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
The specific embodiment is as follows: referring to fig. 1-2, a sublance slag-sticking preventing coating comprises a first transition layer 2 arranged on the outer side of the lower portion of a sublance body 1, an oil storage layer 3 is arranged on the outer side of the first transition layer 2, a second transition layer 4 is arranged on the outer side of the oil storage layer 3, a microporous layer 5 is arranged on the outer side of the second transition layer 4, and silicone oil is immersed in the first transition layer 2, the oil storage layer 3, the second transition layer 4 and the microporous layer 5. The coating covers at least the whole part of the sublance body 1 which needs to extend into the converter, and preferably covers the part which can be contacted by the slag scraper, so as to prevent the scraper of the slag scraper from clamping the upper end of the coating.
Preferably, the first transition layer 2 is a thermal spraying nickel-aluminum layer, the thickness of the thermal spraying nickel-aluminum layer is preferably about 0.2 mm, and the nickel-aluminum layer prepared by the thermal spraying process has a certain porosity due to the nature of the thermal spraying process. The thermal spraying nickel aluminum layer can be obtained by spraying nickel aluminum powder by plasma or flame, and can also be obtained by spraying nickel aluminum wire by electric arc. The weight ratio of nickel to aluminum in the nickel-aluminum layer is generally 95:5. before thermal spraying, the sublance body 1 is preferably sandblasted to have a certain roughness to enhance the bonding strength.
Preferably, the oil storage layer 3 is a thermal spraying aluminum layer, the thickness of the thermal spraying aluminum layer is preferably 0.5-1 mm, and the porosity of the thermal spraying aluminum layer is about 90%. The thermal sprayed aluminum layer can be obtained by spraying aluminum powder by plasma or flame, or can be obtained by spraying aluminum wires by electric arc.
Preferably, the second transition layer 4 is a thermally sprayed nickel-aluminum layer, and the thickness of the second transition layer 4 is preferably about 0.1 mm. The second transition layer 4 is made by the same process and composition as the first transition layer 2. The transition layer plays a role in enhancing the bonding force of two adjacent layers, and the porosity of the transition layer is 93% -95%.
Preferably, the microporous layer 5 is a thermally sprayed niobium oxide layer, and the porosity of the thermally sprayed niobium oxide layer is about 0.6%. The thermal spraying niobium oxide layer is obtained by plasma spraying mixed powder of niobium pentoxide powder and simple substance metal niobium powder, and then the obtained niobium oxide layer is polished, the higher the surface finish, the better the surface finish, and the roughness is preferably less than Ra0.4. The thermal spraying niobium oxide layer is preferably obtained by polishing after thermal spraying mixed powder of niobium pentoxide powder and niobium powder, wherein the niobium pentoxide powder accounts for 97% of the total weight, the niobium powder accounts for 3% of the total weight, and under the component proportion, the niobium oxide layer has better strength and hardness, the porosity can reach about 0.6% under other proper spraying process conditions, and the pore size is smaller, so that the thermal spraying niobium oxide layer can be polished to higher smoothness. The silicon oil has better wettability to the spray-coated niobium oxide layer. The thermally sprayed niobium oxide layer is both smooth and hard and wears very little through the slag scraper.
The application is that after the coatings are thermally sprayed outside the sublance body 1 in sequence, silicone oil is soaked again to enable the silicone oil to be filled in each coating. When the lower part of the sublance body 1 is inserted into a converter, the smoothness of the microporous layer 5 is very high, and a layer of silicon oil film is arranged on the outer side of the microporous layer, so that steel slag basically cannot be stuck on the microporous layer 5, and even if the bonding strength is very low, the steel slag can be easily scraped by a slag scraper. Because the sublance body 1 is cooled by water, aluminum has better heat conductivity, so that the temperature of the coating is lower, and the silicone oil is extremely little volatilized and is only stuck by steel slag, so that the sublance body 1 can take a longer time and basically has an effective anti-sticking effect in the life cycle of the sublance body 1. Because the total thickness of all the coatings is thin, the passage of the sublance through the guide centering device is not affected.
The above-described embodiments are merely illustrative of or explanation for the principles of the present invention, and the scope of the invention is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present invention, and these are intended to be within the scope of the present invention.
Claims (3)
1. The utility model provides a sublance antiseized sediment coating which characterized in that: including setting up first transition layer (2) in sublance rifle body (1) lower part outside, first transition layer (2) outside is provided with oil reservoir (3), oil reservoir (3) outside is provided with second transition layer (4), second transition layer (4) outside is provided with micropore layer (5), it has silicon oil to dip in first transition layer (2), oil reservoir (3), second transition layer (4) and micropore layer (5), oil reservoir (3) are thermal spraying aluminium layer, thermal spraying aluminium layer's porosity is 90%, micropore layer (5) are thermal spraying niobium oxide layer, thermal spraying niobium oxide layer's porosity is 0.6%, thermal spraying niobium oxide layer is polished by the mixed powder thermal spraying of niobium pentoxide powder and niobium powder and obtains, niobium pentoxide powder accounts for 97% of total weight in this mixed powder, niobium powder accounts for 3% of total weight.
2. A sublance slag resistant coating as defined in claim 1 wherein: the first transition layer (2) is a thermal spraying nickel-aluminum layer.
3. A sublance slag resistant coating as defined in claim 1 wherein: the second transition layer (4) is a thermal spraying nickel-aluminum layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211442741.6A CN115896388B (en) | 2022-11-18 | 2022-11-18 | Slag-sticking-preventing coating for sublance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211442741.6A CN115896388B (en) | 2022-11-18 | 2022-11-18 | Slag-sticking-preventing coating for sublance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115896388A CN115896388A (en) | 2023-04-04 |
| CN115896388B true CN115896388B (en) | 2023-12-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211442741.6A Active CN115896388B (en) | 2022-11-18 | 2022-11-18 | Slag-sticking-preventing coating for sublance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115896388B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU3909672A (en) * | 1972-02-17 | 1973-08-23 | British Steel Corporation | Aluminium/refractory coated lance |
| US4389360A (en) * | 1979-12-15 | 1983-06-21 | Nippon Steel Corporation | Method of forming a protective coating on a long lance to be immersed in molten metal |
| CN102839254A (en) * | 2012-09-18 | 2012-12-26 | 苏州宝联重工股份有限公司 | Non-sticky steel converter oxygen lance and manufacturing method thereof |
| CN202730177U (en) * | 2012-06-11 | 2013-02-13 | 苏州宝联重工股份有限公司 | Non-steel adhesion slag splashing protection device |
| CN202730170U (en) * | 2012-06-11 | 2013-02-13 | 苏州宝联重工股份有限公司 | Novel non-steel adhesion converter sublance |
| JP2013057104A (en) * | 2011-09-08 | 2013-03-28 | Nippon Steel & Sumitomo Metal Corp | Deposition prevention method of ground metal to oxygen top-blowing lance at converter blowing |
| CN112341873A (en) * | 2020-11-04 | 2021-02-09 | 东南大学 | Long-acting anti-icing coating and preparation method and application thereof |
-
2022
- 2022-11-18 CN CN202211442741.6A patent/CN115896388B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU3909672A (en) * | 1972-02-17 | 1973-08-23 | British Steel Corporation | Aluminium/refractory coated lance |
| US4389360A (en) * | 1979-12-15 | 1983-06-21 | Nippon Steel Corporation | Method of forming a protective coating on a long lance to be immersed in molten metal |
| JP2013057104A (en) * | 2011-09-08 | 2013-03-28 | Nippon Steel & Sumitomo Metal Corp | Deposition prevention method of ground metal to oxygen top-blowing lance at converter blowing |
| CN202730177U (en) * | 2012-06-11 | 2013-02-13 | 苏州宝联重工股份有限公司 | Non-steel adhesion slag splashing protection device |
| CN202730170U (en) * | 2012-06-11 | 2013-02-13 | 苏州宝联重工股份有限公司 | Novel non-steel adhesion converter sublance |
| CN102839254A (en) * | 2012-09-18 | 2012-12-26 | 苏州宝联重工股份有限公司 | Non-sticky steel converter oxygen lance and manufacturing method thereof |
| CN112341873A (en) * | 2020-11-04 | 2021-02-09 | 东南大学 | Long-acting anti-icing coating and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 氧枪喷头耐热覆层保护问题的探讨;靳巍等;《山东冶金》;第20卷(第1期);32-34 * |
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| Publication number | Publication date |
|---|---|
| CN115896388A (en) | 2023-04-04 |
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