CN204209084U - A kind of continuous casting system producing the oval base of large gauge - Google Patents
A kind of continuous casting system producing the oval base of large gauge Download PDFInfo
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- CN204209084U CN204209084U CN201420570416.2U CN201420570416U CN204209084U CN 204209084 U CN204209084 U CN 204209084U CN 201420570416 U CN201420570416 U CN 201420570416U CN 204209084 U CN204209084 U CN 204209084U
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- oval base
- continuous casting
- oval
- molten steel
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- 238000009749 continuous casting Methods 0.000 title claims abstract description 38
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 48
- 239000010959 steel Substances 0.000 claims abstract description 48
- 238000001816 cooling Methods 0.000 claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 230000006698 induction Effects 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000009933 burial Methods 0.000 claims abstract description 8
- 238000005520 cutting process Methods 0.000 claims abstract description 8
- 238000005422 blasting Methods 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims description 28
- 238000010583 slow cooling Methods 0.000 claims description 11
- 239000000498 cooling water Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 26
- 230000008569 process Effects 0.000 abstract description 17
- 238000011084 recovery Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000007711 solidification Methods 0.000 description 8
- 230000008023 solidification Effects 0.000 description 8
- 230000009467 reduction Effects 0.000 description 5
- 238000005204 segregation Methods 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- 238000004512 die casting Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005021 gait Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
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- Continuous Casting (AREA)
Abstract
The utility model relates to a kind of continuous casting system producing the oval base of large gauge and comprises: tundish: be provided with the continuous thermometering device matched with induction heating apparatus in tundish; Crystallizer: be provided with the electromagnetic mixing apparatus stirring molten steel in crystallizer; Secondary cooling zone: comprise arcuate guide section and the atomizing water nozzle being distributed in arcuate guide section both sides; Straightening mechanism: comprise the multiple stage withdrawal straightening machine oval base being implemented to continuous straightening, multiple stage withdrawal straightening machine is along the direct of travel arrangement on a declining curve of oval base and cutting machine, burial pit and shot-blasting machine.Based on the continuous casting process of this continuous casting system, there is flow process short, the advantage that cost is low, obtained oval base not only has excellent surface quality, and the low multiple quality in its cross section reaches the primary standard of country, and the lumber recovery of oval base reaches 96%, higher by more than 10% than mould note technique.
Description
Technical field
The utility model relates to the continuous casting system producing oval base, is specifically related to the continuous casting system adopted for the oval base of production super large standard superelevation alloy.
Background technology
World economy situation is complicated and changeable, and steel industry is faced with the dual-pressure of cost of raw material height and production capacity surplus, just progressively comes into low margin age.Improve the quality of products, Branding image is conducive to improving the market competitiveness of enterprise, for the manufacture of heavy-gauge sheeting, replacing slab to carry out the rolling of heavy-gauge sheeting oval for continuous casting base, the internal soundness of heavy-gauge sheeting can be improved by improving rolling reduction etc.The oval base of super large standard is as Hot Metal in Beam Blank, and current production technology is produced with die casting process.Because die casting process production efficiency is low, energy consumption is high, and the shortcoming that lumber recovery is low causes its production cost very high, and quality is also unstable, is difficult to meet field demand.Therefore, develop oval base continuous casting process to substitute die casting process and become industrial trend.
Chinese utility model patent " round billet continuous casting method and round billet continuous casting system " (Authorization Notice No. CN102343429B) discloses a kind of round billet continuous casting system, by determining strand intensity of cooling in the unit are along Continuous Casting Square to the different spray section arranged according to pulling rate, can solidify at continuous casting billet shell, cool and in process thickening gradually, make base shell cool evenly and prevent circular pipe blank from producing the internal flaws such as centre burst.But, blemish in an otherwise perfect thing be this system be only suitable for manufacture diameter at the strand of 388 ~ 450mm, for the oval base that chi footpath is larger, then cannot ensure its performance.
In addition, existing round billet continuous casting system also also exists following subject matter in production circle base process: at tundish in molten steel heating steps, owing to lacking effective control device, the degree of superheat of molten steel minimum only can stability contorting at 20 ~ 30 DEG C, and can not Prepared by Low Superheat Pouring be realized.Have again, existing continuous casting system is when producing φ 600mm large gauge circle base, the problem of crystallizer surface molten steel shells solidify is there is in meeting in various degree when pouring into a mould, and give normal cast, bring a lot of difficulty, especially when producing the oval base of more large gauge, crystallizer surface molten steel shells solidify phenomenon maybe will cause whole production line to be paralysed.In addition, because the soft reduction technique of oval base not yet develops, the oval base of super large standard produces large amount of contraction cannot be supplied when casting solidification, blank center certainly will be caused to produce serious segregation and loosen, and this is also that restriction adopts existing round billet continuous casting system to produce the major reason of more large size circle base.
Utility model content
Technical problem to be solved in the utility model provides a kind of large gauge oval base continuous casting system for above-mentioned prior art, not only ensure the smooth enforcement of production process, and inside and outside can guaranteeing the oval base of the large gauge produced, quality is held concurrently excellent, and especially can meet the manufacturing of the oval base of φ 900*1350mm large gauge.
The technical scheme in the invention for solving the above technical problem is: a kind of continuous casting system producing the oval base of large gauge, comprising: the tundish set gradually: the molten steel injected by ladle for access the induction heating apparatus be furnished with for heating molten steel, in described tundish, being provided with the continuous thermometering device matched with described induction heating apparatus; Crystallizer: for molten steel being condensed into the oval base with the liquid heart, is provided with the electromagnetic mixing apparatus stirring molten steel in described crystallizer, be provided with the mould vibration device driving oval base to discharge in crystallizer below described crystallizer; Secondary cooling zone: comprise by between two corresponding become the arcuate guide section that arranges along the direct of travel of oval base of many groups nip rolls of a group, and be distributed in the cooling water nozzle of described arcuate guide section both sides; Straightening mechanism: comprise the multiple stage withdrawal straightening machine oval base being implemented to continuous straightening, described multiple stage withdrawal straightening machine is mild downward trend arrangement along the direct of travel of oval base; Described straightening mechanism end is provided with the cutting machine oval base being cut into the oval base of scale in turn, implements the burial pit of slow cooling and the oval base of the scale after slow cooling is carried out to the shot-blasting machine of surface inspection, cleaning to the oval base of scale.
Particularly, described withdrawal straightening machine comprises frame, is relatively arranged on the upper and lower roll in described frame up and down, and the reductor be connected with described top roll and the motor driving described reductor, be separated with the spacing passed through for oval base between described top roll and lower roll.In actual production, for the production of super large standard base as oval in φ 900*1350mm, have strict control to the straightening speed of withdrawal straightening machine, for this reason, the preferred roller footpath of described withdrawal straightening machine at the pulling-straightening roller of more than φ 450mm and the motor of more than 10 grades to improve the stability contorting to straightening speed.
Preferably, total falling head of described multiple stage withdrawal straightening machine arrangement is 20 ~ 25mm, implement in the process of solidification end slighter compress in straightening mechanism to oval base, oval base is made to have the heavy reduction of 10 ~ 15mm, thus solve the quality problems of oval base center segregation, center porosity, and the crackle because slighter compress causes oval base to produce can be prevented, improve the heart portion quality of oval base.
Preferably, the cooling water nozzle of described arcuate guide section both sides is atomizing water nozzle, achieves the Homogeneous cooling on oval base surface, contributes to the cooling velocity effectively controlling oval base, avoid forming the temperature difference everywhere on the oval base surface of secondary cooling zone, contribute to the surface quality improving oval base.
Based on the continuous casting process of the continuous casting system of the oval base of above-mentioned production large gauge, comprise the steps:
A. the molten steel in ladle is injected tundish, open the induction heating apparatus heating molten steel of tundish, and the degree of superheat coordinating continuous thermometering device to control molten steel in tundish is 10 ~ 20 DEG C;
B. the molten steel in tundish injected crystallizer and lay covering slag on molten steel top layer, cooling and stir make molten steel be condensed into oval base with the liquid heart to molten steel, the emitted dose of crystallizer cooling water is 500 ~ 700m
3/ h, stir current is 50 ~ 150A, and stirring frequency is 2 ~ 4Hz;
C. straightening mechanism and mould vibration device is started, making the oval base with the liquid heart enter secondary cooling zone and controlling the gait of march of oval base in arcuate guide section is 0.05 ~ 0.25m/min, simultaneously, the cooling water nozzle opening arcuate guide section both sides carries out cooling twice to oval base, and the specific water of cooling twice is 0.1 ~ 0.3L/kg;
D. oval base enters straightening mechanism, multiple stage withdrawal straightening machine carries out continuous straightening to oval base, straightening temperature controls at 850 ~ 950 DEG C, multiple stage withdrawal straightening machine is 20 ~ 25mm along total falling head that oval base direct of travel is arranged, while realizing aligning oval base, implement slighter compress, the overall reduction of multiple stage withdrawal straightening machine is 5 ~ 10mm;
E. oval base aligning and be cut into the oval base of scale by cutting machine after solidifying completely, and the temperature controlling the oval base of scale is more than 600 DEG C;
F. the oval base of the scale of temperature more than 600 DEG C is sent into burial pit slow cooling 24 ~ 48h;
G. shot-blasting machine is adopted to carry out surface inspection, cleaning to the oval base of the scale after slow cooling, i.e. obtained oval base finished product.
Preferably, the main component of covering slag described in step b comprises: SiO
2: 28 ~ 32%, Al
2o
3: 14 ~ 18%, CaO:26 ~ 30%, C:14 ~ 18%, its main physicochemical property test rating is: basicity: 0.8 ~ 1.0, fusing point: 1220 ~ 1240 DEG C, viscosity: 0.8 ~ 1Pa.S.This covering slag is conducive to improving the phenomenon that when the oval base low speed of large gauge is poured into a mould, crystallizer surface molten steel easily solidifies, and is conducive to the smooth cast of molten steel.
The utility model has following features
(1) by installing the continuous thermometering device measuring liquid steel temperature in real time in tundish, and make it to match with the induction heating apparatus of tundish, in effective control tundish, the low overheat of molten steel heating is at 10 ~ 20 DEG C, thus realize the cast cold of molten steel, ensure that oval base inner equiax crystal district ratio is greater than 60%, thus improve the oval base of large gauge there is good internal soundness.
(2) by installing the electromagnetic mixing apparatus stirring molten steel in crystallizer, stirring at low speed molten steel while of when molten steel condensation, be conducive to discharging in time molten steel overheated, reduce molten steel internal difference in temperature, not only be conducive to the condensation crust of the inner molten steel of crystallizer but also contribute to eliminating the phenomenon of crystallizer surface molten steel solidification crust, molten steel is poured into a mould smoothly.
(3) nozzle that secondary cooling zone is arranged adopts atomizing water nozzle, is conducive to the Homogeneous cooling on oval base surface and improves the surface quality of oval base.
(4) for the production of the oval base of large gauge, center segregation, the center porosity of blank can be more serious, the utility model adopts multiple stage withdrawal straightening machine to realize align to oval base and controls multiple stage straightener along the direct of travel of oval base is certain downward trend, synchronously realizes aligning and slighter compress at the solidification end of oval base.Simultaneously, control the lower-speed state of straightening speed at 0.05 ~ 0.25m/min to ensure that the position of oval base solidification end is in straightening region, the amount controlling slighter compress, and can to prevent because slighter compress makes oval base crack to overcome the shortcoming of oval base solidification end center segregation, center porosity at the heavy reduction of 10 ~ 15mm.
(5) for the production of the oval base of large gauge, because the thickness of oval base is larger, conventional aligning mode is adopted to be difficult to accomplish, the utility model devises continuous straightening technique for this reason, multiple stage withdrawal straightening machine is adopted to distribute along the direct of travel of oval base, and control the percentage elongation of oval base on every platform withdrawal straightening machine below the critical value forming crackle, produce inside and outside straightening cracks to avoid oval base in continuous straightening technique.
(6) for the production of the oval base of large gauge, according to conventional cold bed, the oval base after cutting is normally cooled, can cause that oval base is easy to crack to be scrapped because cooling is too fast, yield rate reduces, the utility model adopts burial pit, coordinate high temperature inserting-coil process, control oval base cutting rear surface temperature and still more than 600 DEG C, put into burial pit slow cooling in time, effectively prevent the generation of cooling crack.
Compared with prior art, the utility model has the advantage of: the utility model provides the continuous casting system of the oval base of a set of production large gauge, by the improvement to tundish in continuous casting system, crystallizer, secondary cooling zone and straightening mechanism, ensure that the low temperature continuous casting of oval base respectively, eliminate the phenomenon of crystallizer surface molten steel solidification crust, synchronously in the Homogeneous cooling of the oval base of secondary cooling zone and straightening technique realize aligning and slighter compress technique, ensure that the smooth enforcement of the oval base production process of large gauge, and the inside and outside quality of oval base.Based on this continuous casting system continuous casting process manufactured by oval base not only there is excellent surface quality, and the low multiple quality in its cross section reaches the primary standard of country's (industry), oval base center porosity≤1.5 grade, centre burst 0.5 grade, Residual hole 0.5 grade, this continuous casting process makes the lumber recovery of oval base reach 96%, higher by more than 10% than mould note technique, and flow process is short, cost is low, is convenient to industrial mass manufacture.
Accompanying drawing explanation
Fig. 1 is the continuous casting system structural representation producing the oval base of large gauge in the utility model embodiment;
Fig. 2 is the structural representation of 9 withdrawal straightening machines in the utility model embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.
As shown in Figure 1, for the ease of the transfer of molten steel, the continuous casting system of the oval base of the production large gauge in the present embodiment coordinates with ladle turret 2 to be installed, it specifically comprises: the tundish 3 arranged in turn: the molten steel injected by ladle 1 for access the induction heating apparatus 4 be furnished with for heating molten steel, is provided with the continuous thermometering device 14 matched with induction heating apparatus 4 in tundish 3; Crystallizer 5: for molten steel being condensed into the oval base with the liquid heart, is provided with the electromagnetic mixing apparatus 6 stirring molten steel in crystallizer 5, be provided with the mould vibration device 16 driving oval base to discharge in crystallizer 5 below crystallizer 5; Secondary cooling zone: comprise by between two corresponding become the arcuate guide section 18 that arranges along the direct of travel of oval base of many groups nip rolls 7 of a group, with the cooling water nozzle 17 being distributed in arcuate guide section 18 both sides, wherein cooling water nozzle 17 is able to Homogeneous cooling for atomizing water nozzle to be implemented in oval base in arcuate guide section; Straightening mechanism: comprise the continuous straightening of 9 withdrawal straightening machines, 10,9 withdrawal straightening machines realizations to oval base oval base being implemented to continuous straightening; Straightening mechanism end is also provided with the cutting machine 13 oval base being cut into the oval base of scale, implements the burial pit 12 of slow cooling and the oval base of the scale after slow cooling is carried out to the shot-blasting machine 11 of surface inspection, cleaning to the oval base of scale.
As shown in Figure 2,9 withdrawal straightening machines are along the direct of travel distribution on a declining curve of oval base, and total falling head controls at 20 ~ 25mm, arbitrary withdrawal straightening machine comprises frame 10.5, be relatively arranged on the upper and lower roll 10.3,10.4 in frame 10.5 up and down, the reductor 10.2 be connected with top roll 10.3 and the motor 10.1 driving reductor 10.2, the spacing passed through for oval base is separated with between top roll 10.3 and lower roll 10.4, in the present embodiment, the roller footpath of top roll and lower roll is 450mm, and 10 grades of motors selected by motor 10.1.
The continuous casting process of the oval base of the production large gauge based on above-mentioned continuous casting system is specific as follows: for the oval base of production specification φ 900*1350mm large gauge,
The molten steel smelted is injected ladle 1, by ladle turret 2, ladle 1 is transferred to above tundish 2, molten steel is injected in tundish 3 by the mouth of a river bottom ladle 1, start induction heater 4 and continuous thermometering device 14, the molten steel in tundish 3 is heated and the degree of superheat controlling molten steel within the scope of 10 ~ 20 DEG C; The delivery port position of tundish 3 is aimed at crystallizer 5 in advance, and molten steel flows into the crystallizer 5 of end opening by dummy head shutoff, and lay covering slag 15 on molten steel top layer, molten steel is condensed into box hat gradually along crystallizer periphery, and crystallizer cooling water inflow controls at 500 ~ 700m
3/ h, the molten steel simultaneously opened in electromagnetic mixing apparatus 6 pairs of crystallizers 5 stirs, stir current 50 ~ 150A, stirring frequency 2 ~ 4Hz; When the thickness that exit, crystallizer lower end base shell has reaches 30mm or more, start withdrawal straightening machine 10 and mould vibration device 16 simultaneously, its heart portion of oval base 9(with the liquid heart is made to be still liquid core 8) enter the arcuate guide section 18 i.e. secondary cooling zone be made up of nip rolls 7, oval base is descending on one side, gait of march is 0.05 ~ 0.25m/min, while the atomized water standing atomizing water nozzle 17 ejection of arcuate guide section 18 both sides forces cooling to it, the specific water of cooling twice controls 0.1 ~ 0.3L/kg; After dummy bar goes out withdrawal straightening machine 10, itself and oval base are thrown off, nine withdrawal straightening machines 10 are adopted to implement 9 continuous straightenings to oval base, straightening temperature controls at 850 ~ 950 DEG C, while oval base carries out aligning, control total falling head that nine withdrawal straightening machines 10 have along the direct of travel of oval base at 20 ~ 25mm, thus at oval base solidification end 19, slighter compress is implemented to it, total drafts controls at 5 ~ 10mm; After oval base is aligned and is solidified completely, the oval base of scale of 4 ~ 6m is cut into by flame cutting machine 13, finally use special fixture that oval for the scale of surface temperature more than 600 DEG C base is hung burial pit 12 slow cooling 24 ~ 48h by driving, oval base traveling crane after slow cooling terminates carries out shotblasting inspection to shot-blasting machine 11, remove the iron scale on oval base surface, blemish inspection and cleaning are carried out to oval base, ensures the payment of the oval base of zero defect.
In this enforcement; in order to prevent crystallizer surface because oval base section is large and pulling rate is slow and shells solidify; in crystallizer, the main component of covering slag 15 comprises: SiO2:28 ~ 32%, Al2O3:14 ~ 18%, CaO:26 ~ 30%, C:14 ~ 18%; its main physicochemical property test rating is: basicity: 0.8 ~ 1.0, fusing point: 1220 ~ 1240 DEG C, viscosity: 0.8 ~ 1Pa.S.
After testing, the oval base surface quality of the φ 900*1350mm large gauge adopting above-mentioned continuous casting system and continuous casting process to produce is good, the low multiple quality (comprising center segregation and center porosity) in cross section reaches country's (industry) standard one-level, oval base center porosity≤1.5 grade, centre burst 0.5 grade, Residual hole 0.5 grade, try out through user, meet user's requirement completely.And effectively improve the lumber recovery of oval base, can reach more than 96%, improve more than 10% compared with noting technique with mould, this continuous casting system shortens technological process, is conducive to reducing production cost and the oval base steady quality produced, and is convenient to industrial mass manufacture.
Claims (4)
1. produce a continuous casting system for the oval base of large gauge, it is characterized in that: comprise and setting gradually
Tundish (3): the molten steel injected by ladle (1) for access the induction heating apparatus (4) be furnished with for heating molten steel, is provided with the continuous thermometering device (14) matched with described induction heating apparatus (4) in described tundish (3);
Crystallizer (5): for molten steel being condensed into the oval base with the liquid heart, be provided with the electromagnetic mixing apparatus (6) stirring molten steel in described crystallizer (5), described crystallizer (5) below is provided with the mould vibration device (16) driving oval base to discharge in crystallizer (5);
Secondary cooling zone: comprise by between two corresponding become the arcuate guide section (18) that arranges along the direct of travel of oval base of many groups nip rolls (7) of a group, and be distributed in the cooling water nozzle (17) of described arcuate guide section (18) both sides;
Straightening mechanism: comprise the multiple stage withdrawal straightening machine (10) oval base being implemented to continuous straightening, described multiple stage withdrawal straightening machine (10) is along the direct of travel arrangement on a declining curve of oval base;
Described straightening mechanism end is provided with the cutting machine (13) oval base being cut into the oval base of scale in turn, implements the burial pit (12) of slow cooling and the oval base of the scale after slow cooling is carried out to the shot-blasting machine (11) of surface inspection, cleaning to the oval base of scale.
2. the continuous casting system of the oval base of production large gauge according to claim 1, it is characterized in that: described withdrawal straightening machine (10) comprises frame (10.5), be relatively arranged on the upper and lower roll (10.3,10.4) in described frame (10.5) up and down, the reductor (10.2) be connected with described top roll (10.3) and the motor (10.1) driving described reductor (10.2), be separated with the spacing passed through for oval base between described top roll (10.3) and lower roll (10.4).
3. the continuous casting system of the oval base of production large gauge according to claim 1, is characterized in that: total falling head that described multiple stage withdrawal straightening machine (10) is arranged is 20 ~ 25mm.
4. the continuous casting system of the oval base of production large gauge according to claim 1, is characterized in that: the cooling water nozzle (17) of described arcuate guide section (18) both sides is atomizing water nozzle.
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| CN201420570416.2U CN204209084U (en) | 2014-09-30 | 2014-09-30 | A kind of continuous casting system producing the oval base of large gauge |
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| CN201420570416.2U CN204209084U (en) | 2014-09-30 | 2014-09-30 | A kind of continuous casting system producing the oval base of large gauge |
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| CN204209084U true CN204209084U (en) | 2015-03-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104259413A (en) * | 2014-09-30 | 2015-01-07 | 江阴兴澄特种钢铁有限公司 | Continuous casting system and process producing large-specification elliptical billets |
| CN113664174A (en) * | 2021-07-02 | 2021-11-19 | 包头钢铁（集团）有限责任公司 | Production method of steel S355NL commodity blank for wind power flange |
-
2014
- 2014-09-30 CN CN201420570416.2U patent/CN204209084U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104259413A (en) * | 2014-09-30 | 2015-01-07 | 江阴兴澄特种钢铁有限公司 | Continuous casting system and process producing large-specification elliptical billets |
| CN113664174A (en) * | 2021-07-02 | 2021-11-19 | 包头钢铁（集团）有限责任公司 | Production method of steel S355NL commodity blank for wind power flange |
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| C14 | Grant of patent or utility model | ||
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