CN108436049A - A method of V is segregated in control large scale continuous casting billet - Google Patents
A method of V is segregated in control large scale continuous casting billet Download PDFInfo
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- CN108436049A CN108436049A CN201810126647.7A CN201810126647A CN108436049A CN 108436049 A CN108436049 A CN 108436049A CN 201810126647 A CN201810126647 A CN 201810126647A CN 108436049 A CN108436049 A CN 108436049A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/114—Treating the molten metal by using agitating or vibrating means
- B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields
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Abstract
The present invention relates to the preparation field of ferrous metal and non-ferrous metal continuous casting billet, the method that V is segregated in specially a kind of control large scale continuous casting billet is suitable for the preparation of ferrous metal and non-ferrous metal continuous casting billet.This method uses melt sublimate, the high degree of superheat, low mouth of a river flow velocity, small mouth of a river immersion depth, weak M-EMS, cancel end electromagnetic agitation, high pulling rate, apply magnetostatic field and changes the combination process measures such as fan-shaped section radian, inhibit the flowing of metal bath in continuous casting billet, mitigate melt flows and fragmentation is washed away to column crystal, and inhibit the survival and movement of fragmentation nucleus, to pass through the ratio and the distribution that effectively control continuous casting billet Center Equiaxial Crystal area, change the feeding mode of continuous casting billet, mitigate generated V segregations in large scale continuous casting billet solidification processing, so as to the formation for inhibiting V to be segregated, improve as cast condition defect.
Description
Technical field
The present invention relates to the preparation field of ferrous metal and non-ferrous metal continuous casting billet, specially a kind of control large scale connects
The method that V is segregated in strand is suitable for the preparation of ferrous metal and non-ferrous metal continuous casting billet.
Background technology
It is increasing to the demand of large-scale blank with the fast development of China's industry, while to the product of large-scale blank
Matter requires higher and higher.Traditionally, this kind of blank is generally produced by molding, but with the development of continuous casting technology, increasingly
More large-scale blanks are produced by continuous casting.Since the process of setting of large scale continuous casting billet is longer, solidified structure is complicated, and deposits
In significantly solidification feeding, in the as-cast structure of large scale continuous casting billet, it will usually generate serious casting flaw.Especially exist
The inside of large scale continuous casting billet, since complicated develop of equiax crystal during solidification shrinkage will produce serious V segregations, performance
Centered near axis periodic distribution V-shaped segregation band.V is segregated the inhomogeneities for not only bringing ingredient and tissue, Er Qiehui
Lead to loose, the mechanical property of severe exacerbation continuous casting billet.Therefore the V segregations for inhibiting large scale continuous casting billet, improve large scale continuous casting
The quality of base is extremely urgent.
In order to improve the quality of large scale continuous casting billet, people have developed many technologies.By the mistake for reducing continuous casting melt
Temperature and apply electromagnetic agitation, people can improve the equiaxial crystal ratio in continuous casting billet, so as to improve serious center segregation, will in
Heart segregation is distributed in a widened isometric crystalline region.But with the raising of equiaxial crystal ratio, the V segregations of large scale continuous casting billet are but
Become more serious.In recent years, we are by the degree of purity of control metal bath, oxygen, sulfur content especially in steel fusant,
It can be with the generation of the inhibition center segregation of high degree.It needs further to develop the technological approaches for inhibiting V segregations on this basis.
Invention content
For the energy power limit of the prior art, present invention aims at V in a kind of control large scale continuous casting billet of offer to be segregated
Method, solve large scale continuous casting billet in V segregation problems, can inhibit V be segregated formation, improve as cast condition defect.
The technical scheme is that：
A method of V is segregated in control large scale continuous casting billet, is included the following steps：
1) degree of purity of continuous casting of metals melt is controlled；
2) flowing for inhibiting metal bath in metal large scale continuous casting billet, it is broken to washing away for column crystal to mitigate melt flows
Change, inhibits the movement of fragmentation nucleus；
3) the high degree of superheat for keeping continuous casting billet central melt, inhibits the survival of fragmentation nucleus；
4) by controlling the nucleus number in continuous casting billet central melt, the ratio in adjustment Center Equiaxial Crystal area and distribution, change
Become the feeding mode at continuous casting billet center, mitigates V segregations.
The method that V is segregated in the control large scale continuous casting billet controls the degree of purity of continuous casting of metals melt, steel fusant
Total oxygen content be less than 30ppm, sulfur content be less than 0.01wt%.
The method that V is segregated in the control large scale continuous casting billet using gate structure design, reduces mouth of a river immersion deeply
Degree, high pulling rate, applies magnetostatic field, cancels the combination process measures such as end electromagnetic agitation the stirring of weak crystallizer, inhibits continuous casting billet gold
Belong to the flowing of melt, mitigates wash away fragmentation of the melt flows to edge column crystal, and inhibit the movement of fragmentation nucleus.
The method that V is segregated in the control large scale continuous casting billet designs mouth of a river diameter according to continuous casting billet size and shape
And gate structure, the flowing velocity that metal bath enters crystallizer is reduced using the major diameter mouth of a river, gate structure is designed to mitigate
To washing away for criterion for edge column crystal, the mouth of a river of the single hole to lower structure used for the continuous cast round billets of major diameter, the mouth of a river it is straight
Diameter ranging from 20~150mm.
The method that V is segregated in the control large scale continuous casting billet controls the mouth of a river in crystallizer and immerses mold liquid level
Depth is 80~100mm, reduces after metal bath enters crystallizer and is washed away to edge column crystal；Close or reduce crystallizer
The intensity of electromagnetic agitation, it is 0~100A to make stir current, closes continuous casting billet end electromagnetic agitation, inhibits continuous casting billet metal bath
Flowing.
The method that V is segregated in the control large scale continuous casting billet will for the size of different continuous casting materials and continuous casting billet
The casting speed of continuous casting billet improves 10~40% on the basis of conventional pulling rate, when reducing effect of the electromagnetic agitation to continuous casting billet
Between.
The method that V is segregated in the control large scale continuous casting billet, for the continuous cast round billets of steel material, diameter 300mm
The pulling rate of continuous casting billet ranging from 0.85~1.20m/min, pulling rate ranging from 0.50~0.70m/min of diameter 400mm continuous casting billets,
Pulling rate ranging from 0.35~0.50m/min of diameter 500mm continuous casting billets, the pulling rates ranging from 0.24 of diameter 600mm continuous casting billets~
0.33m/min。
The method that V is segregated in the control large scale continuous casting billet applies magnetostatic field in crystallizer or each fan-shaped section, quiet
Magnetic field intensity is 0.1~1T.
The method that V is segregated in the control large scale continuous casting billet keeps continuous casting billet center molten by improving mouth of a river temperature
The high degree of superheat of body inhibits the survival of fragmentation nucleus, mouth of a river temperature to be higher than 30~70 DEG C of continuous casting of metals liquidus curve.
The method that V is segregated in the control large scale continuous casting billet, by inhibiting the nucleus quantity at continuous casting billet center, and it is auxiliary
The control for helping continuous casting segment radian reduces the side that isometric crystalline region ratio makes isometric crystalline region fall to continuous casting billet center, ensures
Continuous casting billet avoids isometric crystalline region feeding always by liquid phase feeding, to effectively V be avoided to be segregated.
The principle of the method for the present invention is：
The present invention inhibits the flowing of metal bath in continuous casting billet, mitigates wash away fragmentation of the melt flows to column crystal, and press down
The survival and movement of fragmentation nucleus processed, to by effectively controlling the nucleus number in continuous casting billet central melt, reduction center etc.
The ratio in axialite area, and equiax crystal area is made to be located at continuous casting billet center side, change the feeding mode at continuous casting billet center, avoids isometric
Crystalline region feeding, to control generated V segregations in large scale continuous casting billet solidification processing.
The invention has the advantages that and advantageous effect：
1, the joint or individually control of the invention by multiple technological parameters, changes the ratio in Center Equiaxial Crystal area and divides
Cloth inhibits V segregations, improves the inherent quality and product qualification rate of product；
2, the present invention is controlled by melt sublimate, while inhibiting V segregations, effectively inhibits center segregation problem；
3, present invention process reasonable design, safe, operability is strong, and enterprise is easy to implement, is suitable for ferrous metal
And the preparation of non-ferrous metal large scale continuous casting billet；
In short, the method for the present invention is using melt sublimate, the high degree of superheat, low mouth of a river flow velocity, small mouth of a river immersion depth, weak knot
Brilliant device electromagnetic agitation cancels end electromagnetic agitation, high pulling rate, applies magnetostatic field and changes the combination process such as fan-shaped section radian and arranges
It applies, inhibits the flowing of metal bath in continuous casting billet, mitigate wash away fragmentation of the melt flows to column crystal, and inhibit fragmentation nucleus
Survival and movement, to by the ratio and the distribution that effectively control continuous casting billet Center Equiaxial Crystal area, change the feeding side of continuous casting billet
Formula mitigates generated V segregations in large scale continuous casting billet solidification processing.
Description of the drawings
The principle schematic that Fig. 1 is segregated for V in the control large scale continuous casting billet of the present invention；
Fig. 2 is the vertical section macrostructure of φ 600mmQ345E continuous casting billets not using the present invention；
Fig. 3 is the vertical section macrostructure of φ 600mmQ345E continuous casting billets using the present invention；
Fig. 4 is the cross section macrostructure of φ 600mmQ345E continuous casting billets using the present invention；
In figure label for：
1 is tundish melt；2 be tundish；3 be the casting mouth of a river；4 be crystallizer；5 be magnetic stirrer；6 be magnetostatic field
Generator；7 be inner arc side columnar zone；8 be deflector roll；9 be continuous casting billet central liquid cave；10 be the isometric nucleus in liquid cave；11 are
Outer arc side columnar zone；12 be the isometric crystalline region of sedimentation.
Specific implementation mode
The present invention is controlled on the basis of existing continuous casting installation for casting by the combination of Alternative parameter, control continuous casting billet center
Proportion of equiaxed grain and distribution are as follows to inhibit V to be segregated：
1) in metal bath smelt stage, the degree of purity of continuous casting of metals melt is controlled, oxygen content is required for steel fusant
Less than 30ppm, sulfur content is less than 0.01wt%.
2) degree of superheat for controlling metal bath in tundish, improves mouth of a river temperature, and mouth of a river temperature is kept to be higher than continuous casting of metals
30~70 DEG C of liquidus curve.
3) it according to continuous casting billet specific size and shape, selects the major diameter mouth of a river and optimizes gate structure, and reduce mouth of a river leaching
The depth entered is 80~100mm, reduces the flowing velocity that metal bath enters crystallizer, and mitigate and rushed to edge column crystal
Brush.
4) it is 80~100mm to control the depth that the mouth of a river is immersed in crystallizer, reduces metal bath and enters opposite side after crystallizer
Portion's column crystal washes away.
5) casting speed of continuous casting billet is improved to 10~40% on the basis of conventional casting speed, and closes or reduces
The intensity (0~100A of stir current) of M-EMS, and close continuous casting billet end electromagnetic agitation.
6) magnetostatic field can be applied in crystallizer and each fan-shaped section, static magnetic field strength is 0.1~1T.
7) according to the specific size of continuous casting billet and shape, increase fan-shaped section radian.
As shown in Figure 1, the device and principle that V is segregated in present invention control large scale continuous casting billet are as follows：
The device includes tundish melt 1, tundish 2, the casting mouth of a river 3, crystallizer 4, magnetic stirrer 5, magnetostatic field hair
Raw device 6, inner arc side columnar zone 7, deflector roll 8, continuous casting billet central liquid cave 9, the isometric nucleus 10 in liquid cave, outer arc side columnar zone
11, isometric crystalline region 12 etc. is settled, tundish melt 1,2 bottom of the tundish setting casting mouth of a river 3, water of casting are housed in tundish 2
Mouthfuls 3 outside is arranged crystallizer 4, and the outside of crystallizer 4 is arranged magnetic stirrer 5,4 lower section of crystallizer, continuous cast round billets each fan
Be staggered magnetostatic field generator 6 and deflector roll 8 on the outside of shape section.The isometric nucleus 10 in liquid cave is formed in the continuous cast round billets,
Inner arc side columnar zone 7 is formed in the inner arc side section of the continuous cast round billets, outer arc is formed in the outer arc side of the continuous cast round billets
Side columnar zone 11 forms in the internal layer close to outer arc side columnar zone 11 and settles isometric crystalline region 12.
In the following, the present invention is described in detail in conjunction with accompanying drawings and embodiments.
Embodiment 1
φ 600mm continuous cast round billets, steel ingot material are Q345E.Technological parameter is Oxygen Content in Liquid Steel 20ppm, molten steel sulfur content
0.009wt%, 35 DEG C of the Metal in Tundish degree of superheat, using the downward single hole mouth of a river, mouth of a river diameter 40mm, casting speed 0.26m/
Min, crystallizer mixing parametric are 100A/2.0HZ, close end electromagnetic agitation, the continuous casting billet vertical section macrostructure prepared
As shown in figure 3, as can be seen from Figure 3 continuous casting billet is without V segregations and center segregation.
Embodiment 2
φ 600mm continuous cast round billets, steel ingot material are Q345E.Technological parameter is Oxygen Content in Liquid Steel 30ppm, molten steel sulfur content
0.005wt%, 45 DEG C of the Metal in Tundish degree of superheat, using the downward single hole mouth of a river, mouth of a river diameter 70mm, casting speed 0.26m/
Min, crystallizer mixing parametric are 100A/2.0HZ, close end electromagnetic agitation, the continuous casting billet cross section macrostructure prepared
As shown in figure 4, figure 4, it is seen that inner arc side to continuous casting billet center is complete columnar zone, outer arc side is to continuous casting in figure
Base center is by edge columnar zone and equiax crystal district's groups at being located at continuous casting billet center side, continuous casting billet by controlling equiax crystal area
Middle no V segregations occur, and do not occur serious center segregation.
And as shown in Fig. 2, the vertical section macrostructure of φ 600mmQ345E continuous casting billets never using the present invention can be seen
Go out, serious V segregations are produced in the isometric crystalline region at continuous casting billet center.
Embodiment the result shows that, the present invention is controlled using the combination of Alternative parameter, is passed through and is inhibited continuous casting billet center
Nucleus quantity changes ratio and the distribution in Center Equiaxial Crystal area, eliminates V segregations, while not generating significant center segregation, carries
The quality of high continuous casting billet.
Claims (10)
1. a kind of method that V is segregated in control large scale continuous casting billet, which is characterized in that include the following steps：
1) degree of purity of continuous casting of metals melt is controlled；
2) flowing for inhibiting metal bath in metal large scale continuous casting billet mitigates wash away fragmentation of the melt flows to column crystal, suppression
The movement of fragmentation nucleus processed；
3) the high degree of superheat for keeping continuous casting billet central melt, inhibits the survival of fragmentation nucleus；
4) by controlling the nucleus number in continuous casting billet central melt, the ratio in adjustment Center Equiaxial Crystal area and distribution, change and connect
The feeding mode at strand center mitigates V segregations.
2. the method that V is segregated in control large scale continuous casting billet described in accordance with the claim 1, which is characterized in that control continuous casting gold
Belong to the degree of purity of melt, the total oxygen content of steel fusant is less than 30ppm, and sulfur content is less than 0.01wt%.
3. the method that V is segregated in control large scale continuous casting billet described in accordance with the claim 1, which is characterized in that tied using the mouth of a river
Structure design, reduction mouth of a river immersion depth, the stirring of weak crystallizer, high pulling rate, application magnetostatic field, cancellation end electromagnetic agitation etc. are compound
Technological measure inhibits the flowing of continuous casting billet metal bath, mitigates wash away fragmentation of the melt flows to edge column crystal, and inhibit broken
Change the movement of nucleus.
4. the method that V is segregated in control large scale continuous casting billet described in accordance with the claim 3, which is characterized in that according to continuous casting billet
Size and shape designs mouth of a river diameter and gate structure, and the flowing that metal bath enters crystallizer is reduced using the major diameter mouth of a river
Speed, gate structure design use single hole to mitigate washing away for criterion to edge column crystal for the continuous cast round billets of major diameter
To the mouth of a river of lower structure, the diameter range at the mouth of a river is 20~150mm.
5. the method that V is segregated in control large scale continuous casting billet described in accordance with the claim 3, which is characterized in that control crystallizer
The depth that mold liquid level is immersed at the middle mouth of a river is 80~100mm, reduces metal bath and enters after crystallizer to edge column crystal
It washes away；The intensity for closing or reducing M-EMS, it is 0~100A to make stir current, closes continuous casting billet end electromagnetism
Stirring inhibits the flowing of continuous casting billet metal bath.
6. the method that V is segregated in control large scale continuous casting billet described in accordance with the claim 3, which is characterized in that be directed to different companies
The casting speed of continuous casting billet on the basis of conventional pulling rate is improved 10~40%, reduces electricity by the size for casting material and continuous casting billet
Magnetic stirs the action time to continuous casting billet.
7. controlling the method that V is segregated in large scale continuous casting billet according to claim 6, which is characterized in that for steel material
The continuous cast round billets of material, pulling rate ranging from 0.85~1.20m/min of diameter 300mm continuous casting billets, the pulling rate of diameter 400mm continuous casting billets
Ranging from 0.50~0.70m/min, pulling rate ranging from 0.35~0.50m/min of diameter 500mm continuous casting billets, diameter 600mm connect
The pulling rate of strand ranging from 0.24~0.33m/min.
8. the method that V is segregated in control large scale continuous casting billet described in accordance with the claim 3, which is characterized in that in crystallizer or
Each fan-shaped section of person applies magnetostatic field, and static magnetic field strength is 0.1~1T.
9. the method that V is segregated in control large scale continuous casting billet described in accordance with the claim 1, which is characterized in that by improving water
Mouth temperature, keeps the high degree of superheat of continuous casting billet central melt, and the survival of fragmentation nucleus, mouth of a river temperature is inhibited to be higher than continuous casting of metals liquid
30~70 DEG C of phase line.
10. the method that V is segregated in control large scale continuous casting billet described in accordance with the claim 1, which is characterized in that connected by inhibiting
The nucleus quantity at strand center, and the control of continuous casting segment radian is assisted, reducing isometric crystalline region ratio makes isometric crystalline region settle
Side in continuous casting billet center ensures continuous casting billet always by liquid phase feeding, and avoids isometric crystalline region feeding, to effectively avoid
V is segregated.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109622903A (en) * | 2019-01-18 | 2019-04-16 | 山东钢铁股份有限公司 | A kind of control method of pinion steel rectangular bloom solidified inside tissue |
| CN111283156A (en) * | 2020-03-23 | 2020-06-16 | 江苏利淮钢铁有限公司 | Method for reducing segregation in casting process of continuous casting square billet for gear |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3908744A (en) * | 1972-08-10 | 1975-09-30 | Voest Ag | Method of continuously casting wide slabs, in particular slabs wider than 1000 mm |
| JPS54107831A (en) * | 1978-02-13 | 1979-08-24 | Nippon Kokan Kk | Continuous steel casting |
| JPS63242453A (en) * | 1987-03-30 | 1988-10-07 | Nkk Corp | Method for casting by light rolling reduction |
| JPH01178356A (en) * | 1987-12-29 | 1989-07-14 | Nkk Corp | Continuous casting method |
| JPH05237621A (en) * | 1992-02-28 | 1993-09-17 | Sumitomo Metal Ind Ltd | Continuous casting method |
| CN1219896A (en) * | 1996-05-13 | 1999-06-16 | 株式会社英比寿 | Method and apparatus for continuous casting |
| CN101868314A (en) * | 2007-11-19 | 2010-10-20 | Posco公司 | Continuous cast slab and method for manufacturing the same |
| CN102806330B (en) * | 2012-08-08 | 2015-02-04 | 中国科学院金属研究所 | Method for improving inner quality of continuous casting billet with thick and large section |
| CN104889357A (en) * | 2014-03-05 | 2015-09-09 | 鞍钢股份有限公司 | Method for reducing center segregation and total oxygen content of high-strength steel |
-
2018
- 2018-02-08 CN CN201810126647.7A patent/CN108436049B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3908744A (en) * | 1972-08-10 | 1975-09-30 | Voest Ag | Method of continuously casting wide slabs, in particular slabs wider than 1000 mm |
| JPS54107831A (en) * | 1978-02-13 | 1979-08-24 | Nippon Kokan Kk | Continuous steel casting |
| JPS63242453A (en) * | 1987-03-30 | 1988-10-07 | Nkk Corp | Method for casting by light rolling reduction |
| JPH01178356A (en) * | 1987-12-29 | 1989-07-14 | Nkk Corp | Continuous casting method |
| JPH05237621A (en) * | 1992-02-28 | 1993-09-17 | Sumitomo Metal Ind Ltd | Continuous casting method |
| CN1219896A (en) * | 1996-05-13 | 1999-06-16 | 株式会社英比寿 | Method and apparatus for continuous casting |
| CN101868314A (en) * | 2007-11-19 | 2010-10-20 | Posco公司 | Continuous cast slab and method for manufacturing the same |
| CN102806330B (en) * | 2012-08-08 | 2015-02-04 | 中国科学院金属研究所 | Method for improving inner quality of continuous casting billet with thick and large section |
| CN104889357A (en) * | 2014-03-05 | 2015-09-09 | 鞍钢股份有限公司 | Method for reducing center segregation and total oxygen content of high-strength steel |
Non-Patent Citations (3)
| Title |
|---|
| M.HATTORI等: "消除连铸板坯偏析的技术改进", 《1989年国际炼钢会议论文选》 * |
| 张正群等: "轻压下条件下管线钢铸坯凝固组织与中心偏析的关系", 《钢铁》 * |
| 汪洪峰等: "高强钢连铸板坯中心偏析的分析及改善措施", 《连铸》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109622903A (en) * | 2019-01-18 | 2019-04-16 | 山东钢铁股份有限公司 | A kind of control method of pinion steel rectangular bloom solidified inside tissue |
| CN109622903B (en) * | 2019-01-18 | 2021-03-09 | 山东钢铁股份有限公司 | Control method for internal solidification structure of rectangular gear steel blank |
| CN111283156A (en) * | 2020-03-23 | 2020-06-16 | 江苏利淮钢铁有限公司 | Method for reducing segregation in casting process of continuous casting square billet for gear |
| CN111283156B (en) * | 2020-03-23 | 2021-11-02 | 江苏利淮钢铁有限公司 | Method for reducing segregation in casting process of continuous casting square billet for gear |
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