CN2409214Y - Converter oxygen lance with coating - Google Patents
Converter oxygen lance with coating Download PDFInfo
- Publication number
- CN2409214Y CN2409214Y CN 99254974 CN99254974U CN2409214Y CN 2409214 Y CN2409214 Y CN 2409214Y CN 99254974 CN99254974 CN 99254974 CN 99254974 U CN99254974 U CN 99254974U CN 2409214 Y CN2409214 Y CN 2409214Y
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- CN
- China
- Prior art keywords
- mixture
- coating
- zro
- lavalle
- shower nozzle
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Abstract
The utility model relates to a converter oxygen lance with a coating layer. The utility model is mainly composed of a lance body and a Laval spray head. The lance body is formed by concentrically sheathing three seamless steel pipes, wherein, a gap between a central pipe and a middle-layer pipe is a cooling water inlet passage, and the gap between the middle-layer pipe and an outer-layer pipe is a cooling water outlet passage. The lower end of the lance body is connected with the Laval spray head. The Laval spray head is provided with Laval holes. Oxygen is sprayed into a molten pool through the Laval holes of the Laval spray head from the central pipe. With the certain length range of the working part in the oxygen lance furnace, the outer surface of the lance body, the outer surface of the Laval spray head, and the inner walls of the Laval holes are all attached with three protection coating layers which are made of various composite materials. The total thickness of the coating layer is 0.2 to 0.3 mm. The coating layer improves the molten metal corrosion resistance and adhesion performance of the oxygen lance, and improves the high-temperature oxidation resistance, burning resistance, etc., and thus the service life of the oxygen lance is effectively improved and the steel-smelting producing cost is reduced.
Description
The utility model relates to a kind of oxygen blowing device of converter steelmaking.
At present, the oxygen rifle that domestic each smelter converter steelmaking is used is similar substantially, even have any different, also only is in structural improvement of oxygen rifle and adjustment, seldom has to be provided with coating on rifle body and Lavalle shower nozzle outside surface and hole, Lavalle inwall.Thereby anti-stick slag ability and high temperature oxidation resisting, anti-scaling loss, the gasproof that can not fundamentally improve the oxygen rifle flow erosion, even the oxygen rifle of some band deposited metals is arranged, patent of invention " the converter steelmaking oxygen rifle that has secondary mouthpiece " as disclosed CN85108323A Patent Office of the People's Republic of China's in February, 1987, this oxygen rifle except on lance body structure, having carried out improving, spraying plating one deck Al on the certain position of the external table of rifle also
2O
3, protection oxygen rifle has been played certain effect.But because its depositing materials Al
2O
3Be a kind of porcelain phase material, the high temperature oxidation resisting of this material and anti-scaling loss all are not very strong, and because its fragility makes itself and the cementability of spraying plating matrix bad, easy scaling loss comes off.On the other hand, the described oxygen rifle of this patent of invention, also spraying plating coating on the inwall of hole, Lavalle not.And the main source of damage of oxygen rifle is: the washing away etc. of the high speed that the steel bonding slag of rifle body, high temperature oxidation, scaling loss and hole, Lavalle are subjected to, high pressure draft.
For overcoming the deficiency of above-mentioned oxygen rifle, it is the converter oxygen gun that has multilayer protective coating of coated material with multiple composite shape matl that the utility model provides a kind of.
For achieving the above object, the utility model has adopted following technical scheme:
This oxygen rifle mainly is made up of rifle body and Lavalle shower nozzle, the rifle body is formed by three layers of concentric suit of weldless steel tube, wherein, gap between pipe core and the middle tube is the water coolant water entry, gap between middle tube and the outer tube is the water coolant water exit, the lower end of rifle body is connected with the Lavalle shower nozzle, oxygen sprays into the molten bath from the hole, Lavalle of pipe core on the shower nozzle of Lavalle, each pipe of rifle body by flange respectively with three oxygen supply gas and advancing, the rubber hose that goes out water coolant links to each other, all have certain tapering at the Lavalle shower nozzle with the outer tube and the middle tube of the preceding paragraph, tapered section is a gun breech to greatly, the shower nozzle section also can be a rifle body of not being with tapering to fine taper, it is characterized in that: the outside surface of the desired height of working portion in 0 to 6 meter the rifle body stove from the Lavalle shower nozzle along rifle body length direction, on the inwall in the hole, Lavalle on the outside surface of Lavalle shower nozzle and the Lavalle shower nozzle coating is arranged all.
Coating is divided into bottom, cross three layers of coating and working linings, and primer can be the mixture of NiCrAlCo (Y), and buffer layer material can be NiCrAl (Y/Co) and ZrO
2The mixture of-MgO, working layer can be ZrO
2The mixture of-MgO; Primer also can be NiCrAl, and buffer layer material also can be Ni/Al
2O
3-TiO
2Mixture, working layer also can be Al
2O
3+ ZrO
2-Y
2O
3Mixture; Primer can also be the mixture of Ni/Al, and buffer layer material can also be Ni/Al+ (Al
2O
3+ TiO
2)+(ZrO
2-Y
2O
3) mixture, working layer can also be ZrO
2-Y
2O
3Mixture; Primer can also be the mixture of AlCr, and buffer layer material can also be AlCr+FeSiMgRe+Al
2O
3-TiO
2+ ZrO
2-Y
2O
3Mixture, working layer can also be Al
2O
3-TiO
2+ ZrO
2-Y
2O
3Mixture or SiC or SiN
4Pottery; Primer can be again the mixture of AlCr+FeSiMgRe, and buffer layer material can be again AlCrSi+Al
2O
3-TiO
2+ ZrO
2-Y
2O
3Mixture, working layer can be Al again
2O
3-TiO
2+ ZrO
2-Y
2O
3Mixture or SiC or SiN
4Pottery.
The coat-thickness of the converter oxygen gun of this coating is 0.2 to 3 millimeter.
Owing to adopted above-mentioned composite shape matl as the oxygen gun body surface; the coated material of Lavalle nozzle surface and hole, Lavalle inwall; and be provided with the three-layer protection coating; show that through experiment and on-the-spot the use molten-metal-resistant that has improved the oxygen rifle corrodes and cementability, has improved resistance to high temperature oxidation and anti-scaling loss; and high temperature resistant have thermal boundary; coating and matrix bond firmly do not come off etc., thereby work-ing life of improving the oxygen rifle more than 1.5 times have reduced the cost of STEELMAKING PRODUCTION.
The utility model will be further described below in conjunction with accompanying drawing:
Fig. 1 is an overall structure synoptic diagram of the present utility model;
Fig. 2 is the sectional view of Lavalle of the present utility model shower nozzle;
Fig. 3 is the external surface coating synoptic diagram of rifle body of the present utility model and Lavalle shower nozzle.
The converter oxygen gun of coating described in the utility model mainly is made up of rifle body and Lavalle shower nozzle 4, has hole, Lavalle 5 on the Lavalle shower nozzle 4.The pipe core 1 that the rifle body is made by weldless steel tube, middle tube 2 and outer tube 3 concentric suits form, and its lower end is connected with Lavalle shower nozzle 4.Each pipe of rifle body links to each other with three root rubber flexible pipes respectively by flange, in order to oxygen supply gas with into and out of water coolant, oxygen sprays into the molten bath from the hole, Lavalle 5 of pipe core 1 on Lavalle shower nozzle 4, water coolant enters from the gap of 2 of pipe core 1 and middle tube, discharges via the gap of 3 of middle tube 2 and outer tube.For guaranteeing three concentric suits of pipe of rifle body, make the Inlet and outlet water crack even, on the outer tube wall of middle tube 2 and pipe core 1, be welded with the some groups of short muscle in location along its length, every group is distributed on the tube wall circumference with three short muscle.All have certain tapering with the outer tube 3 of the preceding paragraph (being generally 6 meters) with middle tube 2 at Lavalle shower nozzle 4, tapered section is a gun breech to greatly, and the shower nozzle section also can be a rifle body of not being with tapering to fine taper.The good red copper of Lavalle shower nozzle 4 usefulness heat-conductive characteristics is made, and Lavalle shower nozzle 4 welds together with rifle volume surrounding pipe 3, adopts screw thread or welding process to be connected with 1 of pipe core.The number in the hole, Lavalle 5 on the Lavalle shower nozzle 4 according to the tonnage difference of converter, can be established three holes, four holes, six holes and octal.
Difference according to the converter tonnage, the outside surface of the desired height of working portion in 0 to 6 meter the rifle body stove from Lavalle shower nozzle 4 along rifle body length direction, the outside surface of Lavalle shower nozzle 4, and the method by spraying or scattering and permeating has coating on the inwall in the hole, Lavalle 5 on the Lavalle shower nozzle 4, coating is divided into 8 three layers of bottom 6, transition layer 7 and working linings, and this trilaminar total thickness is 0.2 to 3 millimeter.Coated material is: primer can be the mixture of NiCrAlCo (Y), and buffer layer material can be NiCrAl (Y/Co) and ZrO
2The mixture of-MgO, working layer can be ZrO
2The mixture of-MgO; Primer also can be NiCrAl, and buffer layer material also can be Ni/Al
2O
3-TiO
2Mixture, working layer also can be Al
2O
3+ ZrO
2-Y
2O
3Mixture; Primer can also be the mixture of Ni/Al, and buffer layer material can also be Ni/Al+ (Al
2O
3+ TiO
2)+(ZrO
2-Y
2O
3) mixture, working layer can also be ZrO
2-Y
2O
3Mixture; Primer can also be the mixture of AlCr, and buffer layer material can also be AlCr+FeSiMgRe+Al
2O
3-TiO
2+ ZrO
2-Yl
2O
3Mixture, working layer can also be Al
2O
3-TiO
2+ ZrO
2-Y
2O
3Mixture or SiC or SiN
4Pottery; Primer can be again the mixture of AlCr+FeSiMgRe, and buffer layer material can be again AlCrSi+Al
2O
3-TiO
2+ ZrO
2-Y
2O
3Mixture, working layer can be Al again
2O
3-TiO
2+ ZrO
2-Y
2O
3Mixture or SiC or SiN
4Pottery.
Its coated material of the converter oxygen gun of described coating can also have the combination of multiple analogous material; different tonnages according to converter; the thickness of coating all can have different numerical ranges with the height of coating; but all belong to invention of the present utility model and mentality of designing, all should fall into protection domain of the present utility model.
Claims (7)
1, a kind of converter oxygen gun of coating, mainly form by rifle body and Lavalle shower nozzle, the rifle body is formed by three layers of concentric suit of weldless steel tube, wherein, gap between pipe core [1] and the middle tube [2] is that the water coolant water inlet is logical powerful, gap between middle tube [2] and the outer tube [3] is the water coolant water exit, the lower end of rifle body is connected with Lavalle shower nozzle [4], oxygen sprays into the molten bath from the hole, Lavalle [5] of pipe core [1] on Lavalle shower nozzle [4], each pipe of rifle body by flange respectively with three oxygen supply gas and advancing, the rubber hose that goes out water coolant links to each other, can all have certain tapering at Lavalle shower nozzle [4] with the outer tube [3] of the preceding paragraph and middle tube [2], tapered section is a gun breech to greatly, the shower nozzle section is to fine taper, it also can be the rifle body of not being with tapering, it is characterized in that: the outside surface of the desired height of working portion in 0 to 6 meter the rifle body stove from Lavalle shower nozzle [4] along rifle body length direction all has coating on the inwall in the hole, Lavalle [5] on the outside surface of Lavalle shower nozzle [4] and the Lavalle shower nozzle [4].
2, the converter oxygen gun of coating according to claim 1 is characterized in that: described coating is divided into bottom, cross three layers of coating and working linings, and primer is the mixture of NiCrAlCo (Y), and buffer layer material is NiCrAl (Y/Co) and ZrO
2The mixture of-MgO, working layer are ZrO
2The mixture of-MgO.
3, the converter oxygen gun of coating according to claim 1 is characterized in that: coating is divided into three layers of bottom, transition layer and working linings, and primer is NiCrAl, and buffer layer material is Ni/Al
2O
3-TiO
2Mixture, working layer is Al
2O
3+ ZrO
2-Y
2O
3Mixture.
4, the converter oxygen gun of coating according to claim 1 is characterized in that: coating is divided into three layers of bottom, transition layer and working linings, and primer is the mixture of Ni/Al, and buffer layer material is Ni/Al+ (Al
2O
3+ TiO
2)+(ZrO
2-Y
2O
3) mixture, working layer is ZrO
2-Y
2O
3Mixture.
5, the converter oxygen gun of coating according to claim 1 is characterized in that: coating is divided into three layers of bottom, transition layer and working linings, and primer is the mixture of AlCr, and buffer layer material is AlCr+FeSiMgRe+Al
2O
3-TiO
2+ ZrO
2-Y
2O
3Mixture, working layer is Al
2O
3-TiO
2+ ZrO
2-Y
2O
3Mixture or SiC or SiN
4Pottery.
6, the converter oxygen gun of coating according to claim 1 is characterized in that: coating is divided into three layers of bottom, transition layer and working linings, and primer is the mixture of AlCr+FeSiMgRe, and buffer layer material is AlCrSi+Al
2O
3-TiO
2+ ZrO
2-Y
2O
3Mixture, working layer is Al
2O
3-TiO
2+ ZrO
2-Y
2O
3Mixture or SiC or SiN
4Pottery.
7,, it is characterized in that coat-thickness is 0.2 to 3 millimeter according to the converter oxygen gun of any described coating in the claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99254974 CN2409214Y (en) | 1999-12-10 | 1999-12-10 | Converter oxygen lance with coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99254974 CN2409214Y (en) | 1999-12-10 | 1999-12-10 | Converter oxygen lance with coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2409214Y true CN2409214Y (en) | 2000-12-06 |
Family
ID=34038430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99254974 Expired - Fee Related CN2409214Y (en) | 1999-12-10 | 1999-12-10 | Converter oxygen lance with coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2409214Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312041A (en) * | 2011-08-24 | 2012-01-11 | 济南程信利冶金备件有限公司 | Anti-corrosion method for oxygen lance nozzle and oxygen lance nozzle |
| CN102605135A (en) * | 2012-03-21 | 2012-07-25 | 沈阳东冶汉森冶金装备有限公司 | Converter cone oxygen lance with surface coating |
| CN106039848A (en) * | 2016-07-26 | 2016-10-26 | 云南汇能科技有限公司 | Gas and liquid separating device for yellow phosphorus tail gas combustion boiler |
| CN107779545A (en) * | 2017-10-25 | 2018-03-09 | 江阴市弘诺机械设备制造有限公司 | A kind of electric furnace arrangement for producing steel wall lance |
| CN108642233A (en) * | 2018-05-11 | 2018-10-12 | 鞍钢股份有限公司 | Method for prolonging service life of converter oxygen lance |
| CN109457079A (en) * | 2019-01-11 | 2019-03-12 | 何斌 | A kind of pneumatic steelmaking oxygen rifle |
| CN110846461A (en) * | 2018-07-27 | 2020-02-28 | 包头市英曼科技有限公司 | Preparation method of anti-sticking steel coating on surface of oxygen lance and oxygen lance with anti-sticking steel coating |
| CN112708723A (en) * | 2020-12-23 | 2021-04-27 | 苏州大学 | Water-cooled spray gun for spraying high-temperature oxidizing gas and method for spraying oxidizing gas |
| CN115141906A (en) * | 2021-03-28 | 2022-10-04 | 上海梅山钢铁股份有限公司 | Long-life oxygen lance nozzle for converter smelting |
| CN116240335A (en) * | 2023-03-31 | 2023-06-09 | 湖南德尚源耐磨工业有限公司 | Oxygen lance for steelmaking |
-
1999
- 1999-12-10 CN CN 99254974 patent/CN2409214Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312041A (en) * | 2011-08-24 | 2012-01-11 | 济南程信利冶金备件有限公司 | Anti-corrosion method for oxygen lance nozzle and oxygen lance nozzle |
| CN102605135A (en) * | 2012-03-21 | 2012-07-25 | 沈阳东冶汉森冶金装备有限公司 | Converter cone oxygen lance with surface coating |
| CN106039848A (en) * | 2016-07-26 | 2016-10-26 | 云南汇能科技有限公司 | Gas and liquid separating device for yellow phosphorus tail gas combustion boiler |
| CN107779545A (en) * | 2017-10-25 | 2018-03-09 | 江阴市弘诺机械设备制造有限公司 | A kind of electric furnace arrangement for producing steel wall lance |
| CN108642233A (en) * | 2018-05-11 | 2018-10-12 | 鞍钢股份有限公司 | Method for prolonging service life of converter oxygen lance |
| CN108642233B (en) * | 2018-05-11 | 2019-10-29 | 鞍钢股份有限公司 | Method for prolonging service life of converter oxygen lance |
| CN110846461A (en) * | 2018-07-27 | 2020-02-28 | 包头市英曼科技有限公司 | Preparation method of anti-sticking steel coating on surface of oxygen lance and oxygen lance with anti-sticking steel coating |
| CN109457079A (en) * | 2019-01-11 | 2019-03-12 | 何斌 | A kind of pneumatic steelmaking oxygen rifle |
| CN112708723A (en) * | 2020-12-23 | 2021-04-27 | 苏州大学 | Water-cooled spray gun for spraying high-temperature oxidizing gas and method for spraying oxidizing gas |
| CN115141906A (en) * | 2021-03-28 | 2022-10-04 | 上海梅山钢铁股份有限公司 | Long-life oxygen lance nozzle for converter smelting |
| CN116240335A (en) * | 2023-03-31 | 2023-06-09 | 湖南德尚源耐磨工业有限公司 | Oxygen lance for steelmaking |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |