CN108672666A - Continuous Casting Method for Improving Center Segregation of Round Billet Spring Steel 60Si2CrVAT - Google Patents
Continuous Casting Method for Improving Center Segregation of Round Billet Spring Steel 60Si2CrVAT Download PDFInfo
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- CN108672666A CN108672666A CN201810509379.7A CN201810509379A CN108672666A CN 108672666 A CN108672666 A CN 108672666A CN 201810509379 A CN201810509379 A CN 201810509379A CN 108672666 A CN108672666 A CN 108672666A
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- 238000009749 continuous casting Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000005204 segregation Methods 0.000 title claims abstract description 37
- 229910000639 Spring steel Inorganic materials 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 239000000498 cooling water Substances 0.000 claims abstract description 9
- 230000005499 meniscus Effects 0.000 claims abstract description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 34
- 229910000831 Steel Inorganic materials 0.000 claims description 30
- 239000010959 steel Substances 0.000 claims description 18
- 238000013019 agitation Methods 0.000 claims description 17
- 229910052786 argon Inorganic materials 0.000 claims description 17
- 238000005266 casting Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000009434 installation Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000007670 refining Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 229910000677 High-carbon steel Inorganic materials 0.000 description 1
- GJEAMHAFPYZYDE-UHFFFAOYSA-N [C].[S] Chemical compound [C].[S] GJEAMHAFPYZYDE-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- B22D11/18—Controlling or regulating processes or operations for pouring
-
- 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
- B22D11/20—Controlling or regulating processes or operations for removing cast stock
-
- 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
- B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
- B22D11/225—Controlling or regulating processes or operations for cooling cast stock or mould for secondary cooling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a continuous casting method for improving center segregation of a round billet spring steel 60Si2CrVAT, wherein the superheat degree of a tundish is controlled to be 20-35 ℃, the electromagnetic stirring current of a crystallizer is controlled to be 300-320A, the frequency is controlled to be 2-4 Hz, the distance between the tail end electromagnetic stirring and a meniscus of the crystallizer is 14-16 m, the current is controlled to be 400-440A, the frequency is controlled to be 6-9 Hz, the drawing speed of the continuous casting billet is controlled to be 0.50-0.55 m/min, the electromagnetic stirring current of a continuous casting secondary cooling section is controlled to be 380-410A, the frequency is controlled to be 8-12 Hz, the cooling water amounts of the tundish, the crystallizer, the secondary cooling section, the electromagnetic stirring parameters, the tail end electromagnetic stirring position and the like in a continuous casting secondary cooling section are respectively controlled to be 50-55L/min, 44-48L/min and 24-28L/min, the specific water amount is 0.25-0.31L/kg and the like.
Description
Technical field
The application belongs to steelmaking technical field, more particularly to a kind of improvement round billet spring steel 60Si2CrVAT center segregations
Continuous cast method.
Background technology
Spring steel 60Si2CrVAT is railway parent company mainly for the manufacture of railway goods train bogie cylindrically coiled spring
One of specified steel.Since railway goods train bogie cylindrically coiled spring has working environment severe, fatigue life requirements are high
The characteristics of, to the degree of purity of 60Si2CrVAT steel, intensity and plasticity, more stringent requirements are proposed.The mechanical property of 60Si2CrVAT
It is required that：Tensile strength >=1900MPa；Yield strength >=1700MPa；Elongation >=9%；The contraction percentage of area >=30%.
60Si2CrVAT steel is produced using round billet, rolling compression deformation is improved, to eliminate shrinkage cavity in strand, loose etc.
Internal flaw makes continuous casting billet dendrite fragmentation, crystal grain refinement improve the consistency of steel, achievees the purpose that the mechanical property for improving steel.
It is still relatively difficult to the control of center segregation but due to the limitation of round billet continuous casting machine equipment, and center segregation can be apparent
Reduce the mechanical property of steel, the especially plasticity of steel.
The center segregation for how controlling round billet production 60Si2CrVAT steel, improves the mechanical property of 60Si2CrVAT steel, especially
It is the plasticity of steel, is current technical staff's problem to be solved.
Invention content
The purpose of the present invention is to provide a kind of continuous cast methods improving round billet spring steel 60Si2CrVAT center segregations, can
To effectively improve the center segregation of round billet spring steel 60Si2CrVAT, to improve the mechanical property of steel, especially steel
Plasticity, reduce product sentences time rate, overcomes deficiency in the prior art.
To achieve the above object, the present invention provides the following technical solutions：
The embodiment of the present application discloses a kind of continuous cast method improving steel center segregation, including：
The degree of superheat of tundish is controlled at 20~35 DEG C；
M-EMS Current is controlled in 300~320A, and FREQUENCY CONTROL is in 2~4Hz；
Distance of the end electromagnetic agitation away from crystallizer meniscus is 14~16m, and current control is in 400~440A, frequency control
System is in 6~9Hz；
Continuous casting billet casting speed control is in 0.50~0.55m/min；
Continuous casting two cold section electromagnetic agitation current control is in 380~410A, and FREQUENCY CONTROL is in 8~12Hz.
Preferably, in the continuous cast method of above-mentioned improvement steel center segregation, continuous casting two cold section is divided into three areas to base
Material carries out water cooling, and three area's cooling water inflows are controlled respectively in 50~55L/min, 44~48L/min, 24~28L/min, compare water
Amount is 0.25~0.31L/kg.
Preferably, in the continuous cast method of above-mentioned improvement steel center segregation, the mouth of a river is sealed using argon.
Preferably, in the continuous cast method of above-mentioned improvement steel center segregation, the argon pressure control at the mouth of a river 0.3~
0.5MPa。
Preferably, in the continuous cast method of above-mentioned improvement steel center segregation, the control of crystallizer inflow 3000~
3200L/min。
Preferably, in the continuous cast method of above-mentioned improvement steel center segregation, crystallizer molten steel surface undulated control precision
For ± 2mm.
Disclosed herein as well is a kind of continuous cast methods improving round billet spring steel 60Si2CrVAT center segregations, including：
The degree of superheat of tundish is controlled at 20~35 DEG C；
M-EMS Current is controlled in 300~320A, and FREQUENCY CONTROL is in 2~4Hz；
Distance of the end electromagnetic agitation away from crystallizer meniscus is 14~16m, and current control is in 400~440A, frequency control
System is in 6~9Hz；
Continuous casting billet casting speed control is in 0.50~0.55m/min；
Continuous casting two cold section electromagnetic agitation current control is in 380~410A, and FREQUENCY CONTROL is in 8~12Hz.
Preferably, in the continuous cast method of above-mentioned improvement round billet spring steel 60Si2CrVAT center segregations, continuous casting two cold
Section be divided into three areas to blank carry out water cooling, three area's cooling water inflows control respectively 50~55L/min, 44~48L/min,
24~28L/min, specific water are 0.25~0.31L/kg.
Preferably, in the continuous cast method of above-mentioned improvement round billet spring steel 60Si2CrVAT center segregations, the mouth of a river uses
Argon seals, and mouth of a river argon pressure is controlled in 0.3~0.5MPa.
Preferably, in the continuous cast method of above-mentioned improvement round billet spring steel 60Si2CrVAT center segregations, crystallizer into
Water rate control is in 3000~3200L/min；Crystallizer molten steel surface undulated control precision is ± 2mm.
Compared with the prior art, the advantages of the present invention are as follows：The improvement round billet spring steel 60Si2CrVAT that the present invention designs
The continuous cast method of center segregation, the center that can efficiently reduce continuous casting billet when producing spring steel 60Si2CrVAT using round billet are inclined
Analysis.
Specific implementation mode
When generally use round billet produces high-carbon steel, it is segregated more difficult to control, tundish temperature of the present invention to round billet continuous casting process
Degree, mouth of a river argon seal pressure, crystallizer water, pulling rate, two cold-zone waters and stirring parameter, position etc. are controlled, greatly
Continuous casting billet center segregation is reduced greatly, reduces the mechanical property caused by center segregation and does not conform to, improve the qualification rate of product.
The present invention is described further by the following example：According to following embodiments, the present invention may be better understood.
However, as it will be easily appreciated by one skilled in the art that specific material ratio, process conditions and its result described in embodiment are only used
In illustrating the present invention, without the present invention described in detail in claims should will not be limited.
Embodiment 1
Using molten iron pretreatment → 100t converters → LF refining → RH → round billet continuous casting (Φ 380mm) → cogging (150mm*
Technological process 150mm) produces 60Si2CrVAT, and continuous casting installation for casting is that six machines six flow round billet continuous casting machine, liquidus temperature 1467
DEG C, the tundish degree of superheat is 31 DEG C, and the conticaster mouth of a river is sealed using argon, so that molten steel is completely cut off air, prevents secondary oxidation of steel, argon gas
Pressure is controlled in 0.4MPa；Crystallizer inflow is 3100L/min, passes in and out water temperature difference≤10 DEG C, casting speed control is in 0.52m/
min；Continuous casting two cold section be divided into sufficient roll segment, three areas of active segment and fixed section to round billet carry out water cooling, sufficient roll segment, active segment and
The cooling water inflow of fixed section is controlled respectively in 52L/min, 46L/min, 25L/min, specific water 0.28L/kg；Crystallizer electromagnetism
Stir current is controlled in 310A, and FREQUENCY CONTROL exists in 2.5Hz, secondary cooling zone electromagnetic agitation current control in 400A, FREQUENCY CONTROL
9Hz；Distance of the end electromagnetic agitation position away from crystallizer meniscus is 15m, and current control is in 420A, and FREQUENCY CONTROL is in 7Hz；Knot
Brilliant device liquid fluctuating control accuracy is ± 2mm.
Embodiment 2
Using molten iron pretreatment → 100t converters → LF refining → RH → round billet continuous casting (Φ 380mm) → cogging (150mm*
Technological process 150mm) produces 60Si2CrVAT, and continuous casting installation for casting is that six machines six flow round billet continuous casting machine, liquidus temperature 1467
DEG C, the tundish degree of superheat is 25 DEG C, and the conticaster mouth of a river is sealed using argon, and argon pressure is controlled in 0.5MPa；Crystallizer inflow is
3000L/min passes in and out water temperature difference≤10 DEG C, and casting speed control is in 0.55m/min；Continuous casting two cold section be divided into sufficient roll segment, active segment and
Three areas of fixed section carry out water cooling to round billet, and the cooling water inflow of sufficient roll segment, active segment and fixed section is controlled respectively in 50L/
Min, 48L/min, 28L/min, specific water 0.27L/kg；M-EMS Current is controlled in 300A, and FREQUENCY CONTROL exists
4Hz, secondary cooling zone electromagnetic agitation current control is in 380A, and FREQUENCY CONTROL is in 11Hz；End electromagnetic agitation position is away from crystallizer bent moon
The distance in face is 14.5m, and current control is in 440A, and FREQUENCY CONTROL is in 6Hz；Liquid level fluctuation of crystallizer control accuracy is ± 2mm.
Embodiment 3
Using molten iron pretreatment → 100t converters → LF refining → RH → round billet continuous casting (Φ 380mm) → cogging (150mm*
Technological process 150mm) produces 60Si2CrVAT, and continuous casting installation for casting is that six machines six flow round billet continuous casting machine, liquidus temperature 1467
DEG C, the tundish degree of superheat is 35 DEG C, and the conticaster mouth of a river is sealed using argon, and argon pressure is controlled in 0.3MPa；Crystallizer inflow is
3200L/min passes in and out water temperature difference≤10 DEG C, and casting speed control is in 0.50m/min；Continuous casting two cold section be divided into sufficient roll segment, active segment and
Three areas of fixed section carry out water cooling to round billet, and the cooling water inflow of sufficient roll segment, active segment and fixed section is controlled respectively in 54L/
Min, 45L/min, 28L/min, specific water 0.30L/kg；M-EMS Current is controlled in 320A, and FREQUENCY CONTROL exists
2Hz, secondary cooling zone electromagnetic agitation current control is in 410A, and FREQUENCY CONTROL is in 8Hz；End electromagnetic agitation position is away from crystallizer meniscus
Distance be 15.5m, current control is in 400A, and FREQUENCY CONTROL is in 9Hz；Liquid level fluctuation of crystallizer control accuracy is ± 2mm.
Comparative example
Certain is produced as a comparison case before selecting continuous casting process to improve.Its technique is as follows：Using molten iron pretreatment → 100t
The technological process of converter → LF refining → RH → round billet continuous casting (Φ 380mm) → cogging (150mm*150mm) produces
60Si2CrVAT, continuous casting installation for casting are that six machines six flow round billet continuous casting machine, and liquidus temperature is 1467 DEG C, and the tundish degree of superheat is 40
DEG C, the conticaster mouth of a river is sealed using argon, and argon pressure is controlled in 0.2MPa；Crystallizer inflow is 3300L/min, and casting speed control exists
0.48m/min；Continuous casting two cold section is divided into sufficient roll segment, three areas of active segment and fixed section carry out water cooling, sufficient roll segment, work to round billet
The cooling water inflow of dynamic section and fixed section is controlled respectively in 58L/min, 52L/min, 32L/min, specific water 0.35L/kg；Crystallization
Device electromagnetic agitation current control is in 350A, and FREQUENCY CONTROL is in 2Hz, and secondary cooling zone electromagnetic agitation current control is in 420A, FREQUENCY CONTROL
In 6Hz；Distance of the end electromagnetic agitation position away from crystallizer meniscus is 17m, and current control exists in 450A, FREQUENCY CONTROL
10Hz；Liquid level fluctuation of crystallizer control accuracy is ± 2mm.
Low power sample is taken respectively to the continuous casting billets of the six of continuous casting streams, using the method for drilling cuttings, using carbon sulphur instrument to carbon content into
Row analysis, calculates segregation ratio, and segregation is more as shown in table 1 below than result.Compared with (comparative example) before process improving, using present invention side
60Si2CrVAT segregations are preferable than controlling after case, and segregation by original 1.20~1.30 than being reduced to 1.15 hereinafter, product closes
Lattice rate is increased to 100% by 30% before improving.
Result is compared in the segregation of table 1
| 1 stream | 2 streams | 3 streams | 4 streams | 5 streams | 6 streams | Product qualification rate | |
| Embodiment 1 | 1.13 | 1.08 | 1.05 | 1.03 | 1.10 | 1.08 | 100% |
| Embodiment 2 | 1.03 | 1.05 | 1.06 | 1.10 | 1.02 | 1.09 | 100% |
| Embodiment 3 | 1.15 | 1.05 | 1.08 | 1.12 | 1.10 | 1.05 | 100% |
| Comparative example | 1.28 | 1.30 | 1.20 | 1.24 | 1.23 | 1.25 | 30% |
Finally, it is to be noted that, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that including a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.
Claims (10)
1. a kind of continuous cast method improving steel center segregation, which is characterized in that
The degree of superheat of tundish is controlled at 20~35 DEG C；
M-EMS Current is controlled in 300~320A, and FREQUENCY CONTROL is in 2~4Hz；
Distance of the end electromagnetic agitation away from crystallizer meniscus is 14~16m, and current control is in 400~440A, and FREQUENCY CONTROL is 6
~9Hz；
Continuous casting billet casting speed control is in 0.50~0.55m/min；
Continuous casting two cold section electromagnetic agitation current control is in 380~410A, and FREQUENCY CONTROL is in 8~12Hz.
2. the continuous cast method according to claim 1 for improving steel center segregation, which is characterized in that continuous casting two cold section is divided into
Three areas to blank carry out water cooling, three area's cooling water inflows control respectively 50~55L/min, 44~48L/min, 24~
28L/min, specific water are 0.25~0.31L/kg.
3. the continuous cast method according to claim 1 for improving steel center segregation, which is characterized in that the mouth of a river is sealed using argon.
4. the continuous cast method according to claim 1 for improving steel center segregation, which is characterized in that mouth of a river argon pressure control
System is in 0.3~0.5MPa.
5. the continuous cast method according to claim 1 for improving steel center segregation, which is characterized in that crystallizer water rate control
In 3000~3200L/min.
6. the continuous cast method according to claim 1 for improving steel center segregation, which is characterized in that crystallizer molten steel surface wave
Dynamic control accuracy is ± 2mm.
7. a kind of continuous cast method improving round billet spring steel 60Si2CrVAT center segregations, which is characterized in that
The degree of superheat of tundish is controlled at 20~35 DEG C；
M-EMS Current is controlled in 300~320A, and FREQUENCY CONTROL is in 2~4Hz；
Distance of the end electromagnetic agitation away from crystallizer meniscus is 14~16m, and current control is in 400~440A, and FREQUENCY CONTROL is 6
~9Hz；
Continuous casting billet casting speed control is in 0.50~0.55m/min；
Continuous casting two cold section electromagnetic agitation current control is in 380~410A, and FREQUENCY CONTROL is in 8~12Hz.
8. the continuous cast method according to claim 7 for improving round billet spring steel 60Si2CrVAT center segregations, feature exist
Be divided into three areas in, continuous casting two cold section and water cooling carried out to blank, three area's cooling water inflows control respectively 50~55L/min,
44~48L/min, 24~28L/min, specific water are 0.25~0.31L/kg.
9. the continuous cast method according to claim 7 for improving round billet spring steel 60Si2CrVAT center segregations, feature exist
In the mouth of a river is sealed using argon, and argon pressure is controlled in 0.3~0.5MPa.
10. the continuous cast method according to claim 7 for improving round billet spring steel 60Si2CrVAT center segregations, feature exist
In crystallizer water rate control is in 3000~3200L/min；Crystallizer molten steel surface undulated control precision is ± 2mm.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110216254A (en) * | 2019-07-22 | 2019-09-10 | 攀钢集团攀枝花钢铁研究院有限公司 | Properties of Heavy Rail Steel homogenieity improves control method |
| CN111842826A (en) * | 2020-06-30 | 2020-10-30 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for controlling quality of casting blank |
| CN112122568A (en) * | 2020-09-07 | 2020-12-25 | 南京钢铁股份有限公司 | Continuous casting bloom combined stirring flow control method and flow control device |
| US11192176B1 (en) | 2020-06-17 | 2021-12-07 | University Of Science And Technology Beijing | Method for improving center segregation and surface crack of continuous casting medium thick slab of peritectic steel |
| WO2021253591A1 (en) * | 2020-06-17 | 2021-12-23 | 北京科技大学 | Method for ameliorating center segregation and surface cracks of peritectic steel continuous casting medium-thickness slab |
| CN114082904A (en) * | 2021-11-30 | 2022-02-25 | 江苏联峰实业有限公司 | Production control process of 60Si2MnA spring steel with high surface quality |
| CN114985692A (en) * | 2022-05-30 | 2022-09-02 | 包头钢铁（集团）有限责任公司 | Continuous casting control method for improving center segregation of round billet |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028713A (en) * | 2012-08-14 | 2013-04-10 | 宝钢集团新疆八一钢铁有限公司 | Continuous casting method for controlling 82B billet carbon segregation |
| CN103567410A (en) * | 2013-11-04 | 2014-02-12 | 山东西王特钢有限公司 | Process for controlling center porosity of large and round continuous casting billet |
| CN104525880A (en) * | 2015-01-21 | 2015-04-22 | 山东钢铁股份有限公司 | Manufacturing method for round billets with overlarge cross sections |
| CN105127386A (en) * | 2015-08-19 | 2015-12-09 | 河北钢铁股份有限公司 | Continuous casting method for controlling center carbon segregation of small high-carbon hard-wire steel square billet |
| CN107282905A (en) * | 2017-06-16 | 2017-10-24 | 马鞍山钢铁股份有限公司 | A kind of method for producing wind power flange continuous cast round billets |
| CN107350445A (en) * | 2017-06-16 | 2017-11-17 | 中原特钢股份有限公司 | The production method of carburizing bearing steel G20Cr2Ni4 continuous cast round billets |
-
2018
- 2018-05-24 CN CN201810509379.7A patent/CN108672666B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028713A (en) * | 2012-08-14 | 2013-04-10 | 宝钢集团新疆八一钢铁有限公司 | Continuous casting method for controlling 82B billet carbon segregation |
| CN103567410A (en) * | 2013-11-04 | 2014-02-12 | 山东西王特钢有限公司 | Process for controlling center porosity of large and round continuous casting billet |
| CN104525880A (en) * | 2015-01-21 | 2015-04-22 | 山东钢铁股份有限公司 | Manufacturing method for round billets with overlarge cross sections |
| CN105127386A (en) * | 2015-08-19 | 2015-12-09 | 河北钢铁股份有限公司 | Continuous casting method for controlling center carbon segregation of small high-carbon hard-wire steel square billet |
| CN107282905A (en) * | 2017-06-16 | 2017-10-24 | 马鞍山钢铁股份有限公司 | A kind of method for producing wind power flange continuous cast round billets |
| CN107350445A (en) * | 2017-06-16 | 2017-11-17 | 中原特钢股份有限公司 | The production method of carburizing bearing steel G20Cr2Ni4 continuous cast round billets |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110216254A (en) * | 2019-07-22 | 2019-09-10 | 攀钢集团攀枝花钢铁研究院有限公司 | Properties of Heavy Rail Steel homogenieity improves control method |
| US11192176B1 (en) | 2020-06-17 | 2021-12-07 | University Of Science And Technology Beijing | Method for improving center segregation and surface crack of continuous casting medium thick slab of peritectic steel |
| WO2021253591A1 (en) * | 2020-06-17 | 2021-12-23 | 北京科技大学 | Method for ameliorating center segregation and surface cracks of peritectic steel continuous casting medium-thickness slab |
| CN111842826A (en) * | 2020-06-30 | 2020-10-30 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for controlling quality of casting blank |
| CN111842826B (en) * | 2020-06-30 | 2022-04-01 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for controlling quality of casting blank |
| CN112122568A (en) * | 2020-09-07 | 2020-12-25 | 南京钢铁股份有限公司 | Continuous casting bloom combined stirring flow control method and flow control device |
| CN114082904A (en) * | 2021-11-30 | 2022-02-25 | 江苏联峰实业有限公司 | Production control process of 60Si2MnA spring steel with high surface quality |
| CN114985692A (en) * | 2022-05-30 | 2022-09-02 | 包头钢铁（集团）有限责任公司 | Continuous casting control method for improving center segregation of round billet |
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