CN202214379U - Oxygen lance spray head - Google Patents
Oxygen lance spray head Download PDFInfo
- Publication number
- CN202214379U CN202214379U CN2011203097640U CN201120309764U CN202214379U CN 202214379 U CN202214379 U CN 202214379U CN 2011203097640 U CN2011203097640 U CN 2011203097640U CN 201120309764 U CN201120309764 U CN 201120309764U CN 202214379 U CN202214379 U CN 202214379U
- Authority
- CN
- China
- Prior art keywords
- spray head
- face
- oxygen lance
- head body
- body end
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses an oxygen lance spray head, belonging to the technical field of convertor steelmaking. The utility model adopts the technical scheme that the oxygen lance spray head comprises a spray head body (3). The oxygen lance spray head is characterized in that a spray head body end face (2) of the spray head body (3) is compact through extrusion, and a thermal insulation layer formed by an alloy thermal insulation material is spray-coated on the surface of the spray head body end face (2). Crystal grains of the compact extruded spray head body end face are arranged more compact, the strength of the spray head body end face is improved, the slag-washing and molten-steel-soaking resisting capacities are higher; the thermal insulation layer spray-coated on the surface of the spray head body end face strengthens the thermal insulation and radiation insulation functions of the spray head body end face, adhesion of copper and steel at high temperature is avoided to ensure that the spray head has stronger high-temperature resistance, therefore, the service life of the oxygen lance spray head is long, and the production cost can be greatly lowered.
Description
Technical field
The utility model relates to the oxygen lance blow head that a kind of converter steelmaking is used.
Background technology
Oxygen is to supply with converter molten pool through complex-shaped oxygen lance blow head to carry out smelting operation in the converter steelmaking, and oxygen lance blow head rational in infrastructure can obtain best smelting operation, facilitation slag; Converting process is steady; Reduce splash, recovery rate of iron is high, and has improved oxygen utilization rate.Shower nozzle is to form through forging or casting processing with the good red copper of thermal conductivity as the crucial building block of oxygen rifle.The Working environment of shower nozzle is extremely abominable, and the reaction zone temperature that oxygen flow ejection back forms is up to about more than 2000 degree, and shower nozzle damages under this environment easily.The shower nozzle source of damage is following: the washing away and the rapid heat cycle effect of (1) high temperature slag.Shower nozzle receives washing away and soaking of high temperature and slag that constantly splashes and molten steel, little by little melting loss attenuation; Because temperature rapid heat cycle continually, the shower nozzle end produces be full of cracks, along with the progressively expansion of continuity be full of cracks of duration of service, until the end infiltration and even leak and scrap; (2) cooling is bad.Nozzle surface crystal grain is heated and grows up, and the crystal grain in shower nozzle centre is compared with new shower nozzle and grown up 5～10 times after damaging, because growing up of crystal grain causes spray orifice distortion, oxygen jet performance depreciation.(3) shower nozzle end face steel bonding.Because rifle position control is improper, or sprinkler performance is not good and steel bonding causes end face cooling conditions variation, and the life-span reduces.Porous nozzle effusive middle part forms negative pressuren zone, and foamy slag and the molten drop slag of carrying secretly are constantly sucked, when high temperature and molten drop with oxidisability hit and stick to the shower nozzle end face in a flash; Copper is molten state; Steel and copper form Fe-Cu sosoloid and bond together firmly, have influenced the thermal conductivity of shower nozzle if red-hot molten drop bonding takes place once more, can take place [Fe]-[O] reaction; Liberated heat makes the copper fusing, and shower nozzle damages.
In recent years, along with increasing substantially of China's iron and steel output, the continuous lifting of process for making was one of problem of paying close attention in the industry the work-ing life of oxygen lance blow head end face always.Oxygen lance blow head end face resist technology was once repeatedly attempted by the insider, but its defective (fusibility) on material is never well overcome.At present, the measure of taking to oxygen lance blow head mainly contains: increase protective guard at end face, forge casting combination etc.But, increase protective guard at end face, do not confirm that this technological operability is not strong at present owing to make the material of protective guard; And forge the casting combination technology is after copper material is cast as definite shape; Under heating state, carry out the processing that forges repeatedly; The percent crystallinity of copper is improved; Density strengthens, but metallic substance repeatedly can crack under the alternating stress load effect, fatigue phenomenon such as fracture, this technology can not fundamentally solve the damageable problem of shower nozzle.
The utility model content
In order to overcome the above-mentioned deficiency that exists in the prior art, the utility model provides a kind of new non-damageable oxygen lance blow head, and its long service life can reduce production costs greatly.
The technical scheme that the utility model adopted is: a kind of oxygen lance blow head, comprise sprayer body, and its special character is: the sprayer body end face of said sprayer body is coated with the thermofin that the alloy lagging material forms through compactly extruding on the surface of said sprayer body end face.
The sprayer body end face of the sprayer body in the utility model is through compactly extruding, and the shower nozzle end grain is arranged tightr, has improved the intensity of shower nozzle end face, and washing away with the immersion ability of anti-slag of shower nozzle end face and molten steel is stronger.And the thermofin of shower nozzle end face surface spraying has strengthened the heat insulation at a distance from radiation function of shower nozzle end face, has avoided copper and steel bonding at high temperature, makes shower nozzle more high temperature resistant.
In order to improve heat insulation, the high temperature resistant and scour resistance of oxygen lance blow head end face, said thermofin is an alumina-silicate ceramic fibre spray material thermofin.The alumina-silicate ceramic fibre spray material has effectively insulating, and is high temperature resistant, bonding firmly, characteristics of difficult drop-off under hot environment particularly have the performance of good weather-proof, antiscour.
For ease of the process operation of oxygen lance blow head, reduce manufacturing procedure, described sprayer body is the integrally casting molding structure.Adopt integrated formed structure, the result of use of product is strengthened.
The beneficial effect of the utility model is: through the shower nozzle end face of compactly extruding, its crystal grain is arranged tightr, has improved the intensity of shower nozzle end face, and washing away with the immersion ability of its anti-slag and molten steel is stronger; And the thermofin of shower nozzle end face surface spraying has strengthened the heat insulation at a distance from radiation function of shower nozzle end face, has avoided copper and steel bonding at high temperature, makes shower nozzle more high temperature resistant.The utility model has solved well influences the oxygen lance blow head three big technical barriers in work-ing life: the washing away and the rapid heat cycle effect of high temperature slag; Cool off bad; The shower nozzle end face is prone to steel bonding.Therefore; The utility model can prolong the work-ing life of oxygen lance blow head greatly; Can improve the work-ing life of shower nozzle about 10% and (approximately prolong about the 20--50 stove work-ing life of every rifle); For the significant effect that reduced production costs, to calculate according to output of steel, the expense of annual light shower nozzle saving can reach up to ten million units.Therefore, development of the utility model and popularization have the remarkable economical meaning.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Among the figure, 1, thermofin, 2, the sprayer body end face, 3, sprayer body.
Embodiment
Embodiment through indefiniteness is further described the utility model below:
Shown in accompanying drawing, be a kind of oxygen lance blow head, comprise sprayer body 3, the sprayer body end face 2 of said sprayer body 3 is coated with the thermofin 1 that the alloy lagging material forms through the pressing machine compactly extruding on the surface of sprayer body end face 2.Thermofin 1 in the present embodiment is an alumina-silicate ceramic fibre spray material thermofin.Alumina-silicate ceramic fibre spray material thermofin is to utilize the dedicated fiber spraying equipment, with high-pressure air with refractory fibre and high-temperature agglomerant uniform mixing postadhesion in the shower nozzle end face, form fiber coating insulating refractory layer.This thermofin is high temperature resistant, difficult drop-off, has strengthened the heat insulation of shower nozzle end face and has avoided copper and steel bonding at high temperature at a distance from radiation, scour resistance, makes oxygen lance spraying high temperature resistant first watch, has prolonged the work-ing life of oxygen lance blow head.
Certainly, the thermofin described in the utility model also can be the thermofin of other lagging materials formation of prior art.
Sprayer body in the present embodiment can adopt integrated structure or integrated formed structure.For ease of the process operation of oxygen lance blow head, and reduce manufacturing procedure, the sprayer body shown in the present embodiment adopts the integrally casting molding structure.Integrated formed structure also helps the enhancing of the result of use of product.
Other parts of present embodiment adopt prior art, repeat no more at this.
The foregoing description with the explanation of doing the utility model, is not a limitation ot it only.
Claims (3)
1. an oxygen lance blow head comprises sprayer body (3), it is characterized in that: the sprayer body end face (2) of said sprayer body (3) is coated with the thermofin that the alloy lagging material forms through compactly extruding on the surface of said sprayer body end face (2).
2. oxygen lance blow head according to claim 1 is characterized in that: said thermofin is an alumina-silicate ceramic fibre spray material thermofin.
3. oxygen lance blow head according to claim 1 and 2 is characterized in that: described sprayer body (3) is the integrally casting molding structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203097640U CN202214379U (en) | 2011-08-24 | 2011-08-24 | Oxygen lance spray head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203097640U CN202214379U (en) | 2011-08-24 | 2011-08-24 | Oxygen lance spray head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202214379U true CN202214379U (en) | 2012-05-09 |
Family
ID=46013641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203097640U Withdrawn - After Issue CN202214379U (en) | 2011-08-24 | 2011-08-24 | Oxygen lance spray head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202214379U (en) |
Cited By (2)
| 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 |
| CN104232838A (en) * | 2014-09-19 | 2014-12-24 | 姜利祥 | Red copper oxygen lance sprayer |
-
2011
- 2011-08-24 CN CN2011203097640U patent/CN202214379U/en not_active Withdrawn - After Issue
Cited By (2)
| 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 |
| CN104232838A (en) * | 2014-09-19 | 2014-12-24 | 姜利祥 | Red copper oxygen lance sprayer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Ji'nan jinchanglong commercial Metallurgical Equipment Manufacturing Co. Ltd. Assignor: Jinan Chengxin the Metallurgical Spare Parts Co.,Ltd. Contract record no.: 2013370000041 Denomination of utility model: Method for making copper oxygen gun nozzle Granted publication date: 20120509 License type: Exclusive License Record date: 20130314 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120509 Effective date of abandoning: 20130605 |
|
| RGAV | Abandon patent right to avoid regrant |