CN202543251U - Fatigue, fracture and breakage resistant stirrer for desulfurization of molten iron - Google Patents
Fatigue, fracture and breakage resistant stirrer for desulfurization of molten iron Download PDFInfo
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- CN202543251U CN202543251U CN201220105708XU CN201220105708U CN202543251U CN 202543251 U CN202543251 U CN 202543251U CN 201220105708X U CN201220105708X U CN 201220105708XU CN 201220105708 U CN201220105708 U CN 201220105708U CN 202543251 U CN202543251 U CN 202543251U
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The utility model discloses a fatigue, fracture and breakage resistant stirrer for desulfurization of molten iron. The fatigue, fracture and breakage resistant stirrer comprises a stirrer metal core and a fire-retardant material working lining which is lined on the external surface; the stirrer metal core comprises a metal stirring shaft and three or four metal core vanes which are uniformly distributed along the circumferential direction of the axis of the metal stirring shaft; the fatigue, fracture and breakage resistant stirrer is specially characterized in that metal reinforcing plates are arranged at the joints of the metal stirring shaft and the upper end surfaces of the metal core vanes. Further, metal anchoring parts are further arranged outside the metal core vanes. The metal core vanes and the metal reinforcing plates are integrally cast or jointed by welding. The fatigue, fracture and breakage resistant stirrer for desulfurization of molten iron designed by the utility model has a simple structure and is convenient to manufacture; and the strengths of the joints of the metal stirring shaft and the metal core vanes are reinforced, so that the stirrer has strong fatigue and breakage resistances, and the service life of the stirrer is prolonged greatly.
Description
Technical field
The utility model relates to the whisking appliance of the outer mechanical agitation desulfuration of the preceding molten iron stove of converter steelmaking, refers to that particularly a kind of desulfurizing iron is with the damaged whisking appliance of fatigue crack-resistant.
Background technology
KR (Kambara Reactor) stirring desulphurization method is that Japanese Nippon Steel began one's study in 1963; It is technological to be applied to industrial a kind of external desulfurization of hot metal since nineteen sixty-five; This sulfur method is to be rotated in the cruciate lobe structure whisking appliance immersion iron ladle with an outer lining refractories; Stir molten iron and make it produce vortex, the sweetening agent through weighing joins the molten iron surface by material feeder simultaneously, and sweetening agent is involved in the molten iron by vortex; Mix, react with high temperature liquid iron, reach the purpose of desulfurization.The circulation of entrainmenting of sweetening agent mixes this sulfur method on the molten iron liquid level through floating on; Realize the circulation contact desulfuriation metallurgical reaction of sweetening agent and molten iron, it is abundant to have the sweetening agent contact reacts time, the desulfuration efficiency height; Sorbent consumption is few; Advantages such as the activity duration is short, and the metal consume is low have obtained applying widely at home.Whisking appliance is the vitals in KR (Kambara Reactor) desulfurizer, also is that sweetening agent mixes the unique power resources of dispersive in molten iron.Along with continuing to optimize of KR desulfur agitator structure; The continuous development of whisking appliance technology of preparing, manufacturing materials and preparation technology, on-line maintenance technology, whisking appliance prolongs work-ing life at double, reports according to related data; 100 tons of iron ladle KR desulfur agitator work-ing life by early stage on average less than 100 stoves/bring up to, 730 stoves/; Thereby make the single age of whisking appliance bear high temperature liquid iron erosive wear heat-up time, high low temperature working conditions change number of times significantly increases, and reuses under time said conditions in the metal-cored identical maintenance of whisking appliance, the metal-cored thermal fatigue number of times of whisking appliance sharply raises; Under the metal-cored reparation access times condition that does not reach regulation of whisking appliance; The use stove number that uses the stove number far to surpass regulation because of the metal-cored total stirring of whisking appliance causes repeated stress failure, not only brings the unplanned replacing of whisking appliance, influences the organization of production of desulfurizing iron; Simultaneously, the also safe operation of crisis production of the fracture of whisking appliance.
The whisking appliance of the molten iron KR stirring desulphurization that generally adopts both at home and abroad at present, is made up of stir shaft and four paddles.Four paddles circumferentially are cruciform along turning axle evenly to be arranged, and the metal-cored thickness direction plane of symmetry of paddle and rotating shaft center's line are in same plane.Paddle commonly used is met untouchable be vertical surface or the CW inclined-plane, 2 ° of left and right sides that leans forward from bottom to top; The back iron face is a vertical surface; The side is lean outward inclined-plane about 2 °, footpath from bottom to top.Whisking appliance stirs power and is delivered to agitator blades through metal-cored stir shaft and metal-cored blade joint portion; And metal-cored stir shaft of whisking appliance and the combining site structural mutation of metal-cored blade upper surface cause mechanical stress and thermal stresses to be concentrated, and have worsened the force-bearing situation at this position; And under stirring condition; This position is in the liquid level swirl bottom of fluctuating up and down, and high temperature low temperature is alternately frequent, causes thermalfatigue failure and fracture.Simultaneously, visible through the whisking appliance sampling analysis that ruptures along the metal-cored blade of whisking appliance upper surface in the actual production, metal-cored surface of fracture crystal grain is thick, intergranular crack is obvious.Thereby strengthening the damaged ability of this regional antifatigue is the key factor of containment whisking appliance repeated stress failure.
Summary of the invention
The purpose of the utility model be exactly to provide that a kind of simple in structure, easily manufactured, fatigue crack-resistant ability is strong, the desulfurizing iron of long service life is with fatigue crack-resistant breakage whisking appliance.
For realizing above-mentioned purpose; The desulfurizing iron that the utility model designed is with the damaged whisking appliance of fatigue crack-resistant; Comprise the refractory materials working lining that whisking appliance is metal-cored and be lining in outside surface; Said whisking appliance is metal-cored comprise the metal stir shaft and along its axle center circumferentially equally distributed three or four metal-cored blades, its special character is: said metal stir shaft and metal-cored blade upper surface combining site are provided with metal reinforcing plates.The intensity of reinforcement metal stir shaft and metal-cored blade combining site prolongs whisking appliance work-ing life.
Further, said metal-cored blade outer surface also is provided with metal anchorage.Like this, can increase the bonding strength of itself and refractory materials working lining.
Further, said metal-cored blade and metal reinforcing plates are integral casting forming, also can weld spicing forming type.
The desulfurizing iron that the utility model designed is with the damaged whisking appliance of fatigue crack-resistant; Simple in structure, easily manufactured; Intensity through reinforcement metal stir shaft and metal-cored blade combining site makes whisking appliance fatigue crack-resistant ability strong, has prolonged whisking appliance work-ing life greatly.
Description of drawings
Fig. 1 is the main TV structure synoptic diagram of a kind of desulfurizing iron with the damaged whisking appliance of fatigue crack-resistant.
Fig. 2 is the A-A sectional views of three leaf desulfurizing irons with the damaged whisking appliance of fatigue crack-resistant.
Fig. 3 is the A-A sectional views of four leaf desulfurizing irons with the damaged whisking appliance of fatigue crack-resistant.
Among the figure: whisking appliance is metal-cored 1, refractory materials working lining 2, metal stir shaft 3, metal-cored blade 4, metal reinforcing plates 5, metal anchorage 6.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further to describe in detail.
Desulfurizing iron shown in the figure is with the damaged whisking appliance of fatigue crack-resistant; Comprise whisking appliance metal-cored 1 and the refractory materials working lining 2 that is lining in outside surface; Whisking appliance metal-cored 1 comprises metal stir shaft 3 and circumferential equally distributed three or four metal-cored blades 4 along its axle center; Metal stir shaft 3 is provided with metal reinforcing plates 5 with metal-cored blade 4 upper surface combining sites; Metal reinforcing plates 5 is fixed with metal stir shaft 3,4 welding of metal-cored blade, and metal-cored blade 4 is an integral casting forming with metal reinforcing plates 5, also can weld splicing and make.Metal-cored blade 4 outside surfaces are provided with metal anchorage 6, are used to strengthen the bonding force of itself and refractory materials working lining 2, improve the anti-fatigue ability of whisking appliance.
Above-mentioned whisking appliance has increased the bonded area between metal stir shaft 3 and the metal-cored blade 4 through metal reinforcing plates 5 is set; Improved the damaged ability of its bonding strength and antifatigue; Slowed down should zone whisking appliance metal-cored 1 structural mutation; Mechanical stress and thermal stresses collected state have been improved; And promoted bonded welding and assembling height between metal-cored stir shaft 3 and the metal-cored blade 4 through metal reinforcing plates 5, and alleviated and stirred the disadvantageous effect of whirlpool liquid fluctuating metal-cored 1 thermal fatigue of whisking appliance, finally reached the purpose that improves the damaged ability of whisking appliance antifatigue.
Claims (3)
1. a desulfurizing iron is with the damaged whisking appliance of fatigue crack-resistant; Comprise whisking appliance metal-cored (1) and the refractory materials working lining (2) that is lining in outside surface; Said whisking appliance metal-cored (1) comprise metal stir shaft (3) and along its axle center circumferentially equally distributed three or four metal-cored blades (4), it is characterized in that: said metal stir shaft (3) is provided with metal reinforcing plates (5) with metal-cored blade (4) upper surface combining site.
2. desulfurizing iron according to claim 1 is with the damaged whisking appliance of fatigue crack-resistant, and it is characterized in that: said metal-cored blade (4) outside surface also is provided with metal anchorage (6).
3. desulfurizing iron according to claim 1 and 2 is characterized in that with the damaged whisking appliance of fatigue crack-resistant: said metal-cored blade (4) is integral casting forming or welding spicing forming type with metal reinforcing plates (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220105708XU CN202543251U (en) | 2012-03-20 | 2012-03-20 | Fatigue, fracture and breakage resistant stirrer for desulfurization of molten iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220105708XU CN202543251U (en) | 2012-03-20 | 2012-03-20 | Fatigue, fracture and breakage resistant stirrer for desulfurization of molten iron |
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| CN202543251U true CN202543251U (en) | 2012-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201220105708XU Expired - Fee Related CN202543251U (en) | 2012-03-20 | 2012-03-20 | Fatigue, fracture and breakage resistant stirrer for desulfurization of molten iron |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105907913A (en) * | 2016-06-08 | 2016-08-31 | 武汉钢铁股份有限公司 | Combined stirrer used for mechanical stirring desulfurization of molten iron and manufacturing method of combined stirrer |
| CN106679611A (en) * | 2017-01-23 | 2017-05-17 | 武汉科技大学 | Internal strain measuring device of KR desulphurization stirrer blades |
| CN107937655A (en) * | 2017-12-07 | 2018-04-20 | 武汉钢铁有限公司 | A kind of long-life molten iron desulphurization stirring device |
-
2012
- 2012-03-20 CN CN201220105708XU patent/CN202543251U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105907913A (en) * | 2016-06-08 | 2016-08-31 | 武汉钢铁股份有限公司 | Combined stirrer used for mechanical stirring desulfurization of molten iron and manufacturing method of combined stirrer |
| CN105907913B (en) * | 2016-06-08 | 2018-03-20 | 武汉钢铁有限公司 | Combined blender for molten iron mechanical agitation desulfuration and preparation method thereof |
| CN106679611A (en) * | 2017-01-23 | 2017-05-17 | 武汉科技大学 | Internal strain measuring device of KR desulphurization stirrer blades |
| CN107937655A (en) * | 2017-12-07 | 2018-04-20 | 武汉钢铁有限公司 | A kind of long-life molten iron desulphurization stirring device |
| CN107937655B (en) * | 2017-12-07 | 2019-07-09 | 武汉钢铁有限公司 | A kind of long-life molten iron desulphurization stirring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20170320 |
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| CF01 | Termination of patent right due to non-payment of annual fee |