CN106670416A - Continuous casting method suitable for special steel with non-crossed content of elements such as carbon, silicon and manganese - Google Patents
Continuous casting method suitable for special steel with non-crossed content of elements such as carbon, silicon and manganese Download PDFInfo
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- CN106670416A CN106670416A CN201710017855.9A CN201710017855A CN106670416A CN 106670416 A CN106670416 A CN 106670416A CN 201710017855 A CN201710017855 A CN 201710017855A CN 106670416 A CN106670416 A CN 106670416A
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- steel
- manganese
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Classifications
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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
- B22D11/18—Controlling or regulating processes or operations for pouring
- B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
-
- 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
Abstract
The invention discloses a continuous casting method suitable for special steel with a non-crossed content of elements such as carbon, silicon and manganese, and belongs to the technical field of ferrous metallurgy. According to the method, the same continuous casting tundish is adopted for casting different steel types, various chemical elements such as carbon, silicon and manganese of the steel are not crossed, and stable control over a low liquid level of the tundish and accurate grasp of retention time are key to success; additional equipment does not to be added, the operation is simple and feasible, and the amount of generated waste blanks is small; and with the continuous casting tundish with a dam weir with the net weight of molten steel being 45t as an example, the steel scrap amount is basically about 35t, meanwhile, a new continuous casting tundish does not need to be consumed, casting does not need to be reorganized, head cutting and tail cutting are not needed, and the production cost is greatly reduced. The method is particularly suitable for smelting production of small-batch and high-quality steel with special purposes.
Description
Technical field
The invention belongs to technical field of ferrous metallurgy, more particularly to a kind of not hand over suitable for constituent contents such as carbon, silicon, manganese
The grade transition method of fork.
Background technology
With the development of national economy, country is more and more to the demand of the steel grade with specific use, such as extraordinary weldering
Silk steel, Bearing with high properties steel, pinion steel etc., but, the demand of these steel grades is frequently not very big, also, different clients will
The chemical composition asked is likely to be not quite similar, and this just brings very big difficulty to the smelting of continuous casting.If one is poured secondary
Arrange two or three stove steel, and pour time the first stove often due to the reason for molding casting and the aspect such as temperature is higher, the quality of steel
Typically will not be very high, meanwhile, no matter how much one poured time stove number, a continuous casting production will be consumed, continuous casting production
Cost is generally tens of thousands of yuan, and such casting sequence is few, the increase that the cost of steel will be drastically, therefore, find a kind of suitable
It is extremely urgent for the Uncrossed grade transition method of the constituent contents such as carbon, silicon, manganese.For the chemistry such as carbon, silicon, manganese unit
The steel grade that cellulose content intersects, as long as the constituent content of transition heat is controlled just to expire in the transposition section of two steel grades simultaneously
The requirement of two steel grades of foot, the method now many steel mills all using, but for the constituent contents such as carbon, silicon, manganese are not handed over
The steel grade of fork, because chemical composition interval does not intersect, the temperature that different steel grades are adapted to cast also differs larger, meanwhile, generation
Steel scrap will also lack as far as possible, and this just brings very big difficulty to even pouring, but, if succeeding in developing, for production cost
Reduction, the enhancing of the market competitiveness, it will produce very important impact.
The content of the invention
The subject matter that the application is solved is to provide and connects suitable for the Uncrossed different steel grade of the constituent contents such as carbon, silicon, manganese
Method is poured, is asked with the technology for solving to realize reducing the Uncrossed different steel grade continuous casting costs of constituent content such as carbon, silicon, manganese
Topic.
In order to solve above-mentioned technical problem, the invention discloses a kind of Uncrossed suitable for constituent contents such as carbon, silicon, manganese
Grade transition method, including step is implemented as follows：
1) even pour and subcontract：Direct casting M stove steel grade A, N stove steel grade B, M stove steel grade A normally cast, subcontract, and work as continuous casting
When pouring basket liquid level is reduced to height H1, moment T1 is designated as, pouring basket liquid level continues to reduce, is reduced to higher than limiting altitude 50mm
Left and right, is advisable higher than limiting altitude 40-60mm, afterwards, starts the first stove steel grade B that casts, and subcontracts, and keeps pouring basket liquid level to be in
Between limiting altitude and limiting altitude+150mm, after being kept for a period of time, pouring basket liquid level is lifted rapidly to height H2, when being designated as
T2 is carved, pouring basket liquid level is continued to lift up afterwards until normal casting liquid level；
2) throwing：Before moment T2, pulling rate pulling rate is operated by the requirement of steel grade A, and after moment T2, pulling rate presses steel grade B's
Require operation；The continuous casting billet pulled out between moment T1 to T2 all sentences useless；Front 2 strands of pull-out are often flowed after moment T2, every
The chemical composition for respectively taking a sample end to end, detecting strand of strand is propped up, end to end the qualified strand of composition is defined as qualified base,
Individually storage；After follow-up strand rolling, carry out being mingled with analyte detection per.
Further, the step 1) even to pour and subcontract, casting M stove steel grade A continuous casting platforms temperature is compared with other stove steel
Plant high 5-30 DEG C, preferably above normal 10-20 DEG C of cast temperature when A casts, when the first stove steel grade B casts, continuous casting platform temperature
High 5-30 DEG C, preferably above normal 10-20 DEG C of cast temperature when casting compared with other stove steel grades B.
Further, the step 1) even pour and subcontract, the height H1 requires field trash to determine according to steel grade A.
When steel grade A is mingled with, species are more, and when content height and inclusion content etc. require to be difficult to control to, H1 numerical value is larger；When steel grade A is mingled with
Species are few, and H1 numerical value is less when being easily controlled, H1 numerical value preferably 300,350 or 400mm.
Further, the step 1) even to pour and subcontract, the limiting altitude is according to tundish structure and deformation extent
Determine.Limiting altitude is also referred to as critical altitude, and the acquisition modes of critical altitude are obtained according to each tundish model, here of the present invention
It is not set forth in detail.When obtaining difficult, can be using 150mm as limiting altitude value.
Further, the step 1) even to pour and subcontract, time of the holding is no less than drawing the steel amount to be one heat steel
Kind of B opens when pouring the time used by 2 times of molten steel amount in tundish.The retention time is advisable for 10-30min.
Further, the step 1) even to pour and subcontract, requirements of the height H2 according to steel grade B to field trash is true
It is fixed.When steel grade B is mingled with, species are more, and when content height and inclusion content etc. require to be difficult to control to, H2 numerical value is larger；As steel grade B
It is mingled with species few, and H2 numerical value is less when being easily controlled, H2 numerical value preferably 300,350 or 400mm.
Compared with prior art, it is of the present invention a kind of suitable for Uncrossed different steel of constituent content such as carbon, silicon, manganese
Method is poured by the company of kind, has reached following effect：
(1) it is easy to operation, it is not necessary to increase extra equipment；
(2) continuous casting billet to sentence useless amount less, by taking the continuous casting production of the band Ba Yan of molten steel net weight 45t as an example, steel scrap amount base
This control is in 35t or so；
(3) new continuous casting production need not be consumed, it is not necessary to which reorganization is poured secondary, it is not necessary to cutting head cutting tail, is dropped significantly
Low production cost.
Specific embodiment
As in description and claim some vocabulary used in censuring particular step.Those skilled in the art should
It is understood that those skilled in the art may call same step with different nouns.This specification and claims not with
The difference of step title is used as distinguishing the mode of step, but the criterion that differentiation is used as with the purpose of implementation steps.Such as exist
In the whole text the "comprising" of description and claim mentioned in is an open language, therefore should be construed to " include but do not limit
In "." substantially " refer in receivable range of error, those skilled in the art can solve described in the range of certain error
Technical problem, basically reaches the technique effect.Description subsequent descriptions are to implement the better embodiment of the application, so described
Description is for the purpose of the rule for illustrating the application, to be not limited to scope of the present application.The protection domain of the application
When being defined depending on the claims person of defining.
Embodiment 1
The present embodiment 1 provides a kind of No. 45 steel of production and method is poured by the company of 60CrMnBA.Certain produces 13 stove steel, 1-
12 stoves are No. 45 steel, and last 1 stove is 60CrMnBA, and specific implementation step is：
1) even pour and subcontract：No. 45 steel of 1-11 stoves are normally cast, when the 12nd steel of stove 45 is cast, before steel casts platform relatively
Heat up 15 DEG C, subcontract after the completion of the casting of the 12nd steel of stove 45, gradually pouring basket liquid level is dropped to into 300mm (H1), record the time 23:
45 (T1), liquid level continues to drop to 200mm or so (limit liquid level 150mm), starts the 1st stove 60CrMnBA that casts, and protects during casting
Higher than 16 DEG C during normal casting 60CrMnBA, pouring basket liquid level rises card steel casting platform, it is ensured that pouring basket liquid level is in 200-270mm
Between, the retention time is 20min.Rapidly pouring basket liquid level is promoted to into 300mm or so (H2) afterwards, recorded the time：00:07
(T2), afterwards pouring basket liquid level continues to improve, it is known that reach normal casting liquid level 800mm；
2) throwing：Because the pulling rate of No. 45 steel and 60CrMnBA is 0.75m/min, therefore process pulling rate guarantor pours in this company
Hold constant；23:45-00:The continuous casting billet pulled out in 07 (T1-T2) time period all sentences useless；0:Often stream draws after 07 (T2)
Front 2 strands for going out, in every strand a sample is taken end to end, and according to table 3 chemical composition of strand, composition whole are detected
Positioned at the scope of table 3, it is qualified to be defined as, individually storage, and it is also all qualified that follow-up rolling is mingled with analyte detection.
It is operated with process is even poured according to normal flow.
Detection：
No. 45 steel：The chemical composition of detection 1-12 No. 45 steel of stove is required according to table 1, testing result is 1-12 stoves 45
The chemical composition of steel is located at the scope of table 1, and No. 45 steel that company pours are qualified.
60CrMnBA：The chemical composition of the 60CrMnBA of the 13rd stove of detection is required according to table 2, testing result is the 13rd stove
The chemical composition of 60CrMnBA is located at the scope of table 2, and the 60CrMnBA that company pours is qualified.
The requirement of the steel chemical composition of table 1 45, %
| Steel grade | C | Si | Mn | Cr≤ | P≤ | S≤ | Ni≤ | Cu≤ |
| 45 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | 0.25 | 0.03 | 0.03 | 0.3 | 0.25 |
The requirement of the 60CrMnBA chemical compositions of table 2, %
The chemical composition ranges that the stove 60CrMnBA of table 3 the 13rd often flows front 2 semifinished products are interval, %
Embodiment 2
The present embodiment 2 is provided and a kind of produces S20C-Cr and method is poured by the company of 52CrMoV4.Certain produces 9 stove steel, and front 7
Stove is S20C-Cr, and last 2 stove is 52CrMoV4, and specific implementation step is：
1) even pour and subcontract：Front 6 stove S20C-Cr normally casts, and when the 7th stove S20C-Cr casts, steel casting platform relatively rises before
16 DEG C of temperature, subcontracts after the completion of the 7th stove S20C-Cr casting, gradually pouring basket liquid level is dropped to into 400mm (H1), records the time 22:22
(T1), liquid level continues to drop to 200mm or so (limit liquid level 150mm), starts the 1st stove 52CrMoV4 that casts, and ensures during casting
Higher than 17 DEG C during normal casting 52CrMoV4, pouring basket liquid level rises steel casting platform, it is ensured that pouring basket liquid level 190-260mm it
Between, the retention time is 15min.Rapidly pouring basket liquid level is promoted to into 400mm or so (H2) afterwards, recorded the time：22:40
(T2), afterwards pouring basket liquid level continues to improve, it is known that reach normal casting liquid level 800mm；
2) throwing：22:The pulling rate 0.8m/min throwings of S20C-Cr before 40,22:According to the pulling rate of 52CrMoV4 after 40
0.75m/min throwings；22:22-22:The continuous casting billet pulled out in 40 (T1-T2) time periods all sentences useless；22:40 (T2) it
Front 2 strands of pull-out often being flowed afterwards, in every strand a sample being taken end to end, according to table 6 chemical composition of strand is detected,
Composition is entirely located in the scope of table 3, and it is qualified to be defined as, individually storage, and it is also all qualified that follow-up rolling is mingled with analyte detection.
It is operated with process is even poured according to normal flow.
Detection：
S20C-Cr：The chemical composition of detection 1-7 stove S20C-Cr is required according to table 4, testing result is 1-7 stoves
The chemical composition of S20C-Cr is located at the scope of table 4, and the S20C-Cr that company pours is qualified.
52CrMoV4：The chemical composition of the 52CrMoV4 of detection 8-9 stoves is required according to table 5, testing result is 8-9 stoves
The chemical composition of 52CrMoV4 be located at the scope of table 5, the 52CrMoV4 that pours is qualified for company.
The requirement of the S20C-Cr chemical compositions of table 4, %
| Steel grade | C | Si | Mn | P | S | Cr | Ni | Cu |
| S20C-Cr | 0.18-0.23 | 0.15-0.35 | 0.30-0.60 | ≤0.030 | ≤0.035 | ≥0.30 | ≤0.20 | ≤0.30 |
The requirement of the 52CrMoV4 chemical compositions of table 5, %
The chemical composition ranges that the stove 52CrMoV4 of table 6 the 8th often flows front 2 semifinished products are interval, %
Compared with prior art, it is of the present invention a kind of suitable for Uncrossed different steel of constituent content such as carbon, silicon, manganese
Method is poured by the company of kind, has reached following effect：
(1) it is easy to operation, it is not necessary to increase extra equipment；
(2) continuous casting billet to sentence useless amount less, save resource, improve productivity ratio；
(3) new continuous casting production need not be consumed, it is not necessary to which reorganization is poured secondary, it is not necessary to cutting head cutting tail, is dropped significantly
Low production cost.
Described above illustrates and describes some preferred embodiments of the application, but as previously mentioned, it should be understood that the application
Be not limited to form disclosed herein, be not to be taken as the exclusion to other embodiment, and can be used for various other combinations,
Modification and environment, and can be in application contemplated scope described herein, by above-mentioned teaching or the technology or knowledge of association area
It is modified.And change that those skilled in the art are carried out and change be without departing from spirit and scope, then all should be in this Shen
Please be in the protection domain of claims.
Claims (6)
1. it is a kind of to be applied to the Uncrossed grade transition methods of constituent content such as carbon, silicon, manganese, it is characterised in that including as follows
Implementation steps：
1) even pour and subcontract：Direct casting M stove steel grade A, N stove steel grade B, M stove steel grade A normally cast, subcontract, in the middle of continuous casting
When bag liquid level is reduced to height H1, moment T1 is designated as, pouring basket liquid level continues to reduce, is reduced to higher than limiting altitude 40-60mm,
Afterwards, start the first stove steel grade B that casts, subcontract, keep pouring basket liquid level to be between limiting altitude and limiting altitude+150mm,
After being kept for a period of time, the rapid pouring basket liquid level that lifted is designated as moment T2 to height H2, pouring basket liquid level is continued to lift up afterwards straight
To normal casting liquid level；
2) throwing：Before moment T2, pulling rate pulling rate by steel grade A requirement operate, after moment T2, pulling rate by steel grade B requirement
Operation；The continuous casting billet pulled out between moment T1 to T2 all sentences useless；Front 2 strands of pull-out are often flowed after moment T2, per a casting
The chemical composition for respectively taking a sample end to end, detecting strand of base, end to end the qualified strand of composition be defined as qualified base, individually
Storage；After follow-up strand rolling, carry out being mingled with analyte detection per.
2. according to claim 1 suitable for the Uncrossed grade transition method of the constituent contents such as carbon, silicon, manganese, it is special
Levy and be, the step 1) even pour and subcontract, height when casting M stove steel grade A continuous casting platforms temperature cast compared with other stove steel grades A
5-30 DEG C, when the first stove steel grade B casts, continuous casting platform temperature is high 5-30 DEG C when casting compared with other stove steel grades B.
3. according to claim 1 suitable for the Uncrossed grade transition method of the constituent contents such as carbon, silicon, manganese, it is special
Levy and be, the step 1) even pour and subcontract, the height H1 requires field trash to determine according to steel grade A.
4. according to claim 1 suitable for the Uncrossed grade transition method of the constituent contents such as carbon, silicon, manganese, it is special
Levy and be, the step 1) even to pour and subcontract, the limiting altitude determines according to tundish structure and deformation extent.
5. according to claim 1 suitable for the Uncrossed grade transition method of the constituent contents such as carbon, silicon, manganese, it is special
Levy and be, the step 1) even pour and subcontract, during the time of the holding is no less than drawing steel amount to open when pouring for the first stove steel grade B
Between wrap in time used by 2 times of molten steel amount.
6. according to claim 1 suitable for the Uncrossed grade transition method of the constituent contents such as carbon, silicon, manganese, it is special
Levy and be, the step 1) even to pour and subcontract, requirements of the height H2 according to steel grade B to field trash determine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710017855.9A CN106670416B (en) | 2017-01-11 | 2017-01-11 | One kind being suitable for carbon, silicon, the Uncrossed grade transition method of manganese element content |
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| CN201710017855.9A CN106670416B (en) | 2017-01-11 | 2017-01-11 | One kind being suitable for carbon, silicon, the Uncrossed grade transition method of manganese element content |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107999717A (en) * | 2017-12-11 | 2018-05-08 | 南京钢铁股份有限公司 | A kind of generous specification slab grade transition production technology |
| CN111331096A (en) * | 2020-03-19 | 2020-06-26 | 山西太钢不锈钢股份有限公司 | Method for eliminating bubbles of duplex stainless steel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06210415A (en) * | 1993-01-12 | 1994-08-02 | Sumitomo Metal Ind Ltd | Method for preventing flow-out of slag in tundish |
| CN102266927A (en) * | 2011-08-01 | 2011-12-07 | 东北大学 | Control method for molten-steel casting sequence of continuous casting machine |
| CN103406513A (en) * | 2013-08-23 | 2013-11-27 | 山西太钢不锈钢股份有限公司 | Continuous casting method of dissimilar stainless steel |
| CN103706775A (en) * | 2013-12-13 | 2014-04-09 | 内蒙古包钢钢联股份有限公司 | Operation method for simultaneously casting secondary and special steel type long continuous castings through continuous casting machine for wide and thick plates |
| CN104561826A (en) * | 2014-11-26 | 2015-04-29 | 南京钢铁股份有限公司 | Low-alloy high-strength structural steel Q460C strip steel and production process thereof |
| CN105483310A (en) * | 2015-11-23 | 2016-04-13 | 东北大学 | Steelmaking batch grouping and production scheduling method for whole process production |
-
2017
- 2017-01-11 CN CN201710017855.9A patent/CN106670416B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06210415A (en) * | 1993-01-12 | 1994-08-02 | Sumitomo Metal Ind Ltd | Method for preventing flow-out of slag in tundish |
| CN102266927A (en) * | 2011-08-01 | 2011-12-07 | 东北大学 | Control method for molten-steel casting sequence of continuous casting machine |
| CN103406513A (en) * | 2013-08-23 | 2013-11-27 | 山西太钢不锈钢股份有限公司 | Continuous casting method of dissimilar stainless steel |
| CN103706775A (en) * | 2013-12-13 | 2014-04-09 | 内蒙古包钢钢联股份有限公司 | Operation method for simultaneously casting secondary and special steel type long continuous castings through continuous casting machine for wide and thick plates |
| CN104561826A (en) * | 2014-11-26 | 2015-04-29 | 南京钢铁股份有限公司 | Low-alloy high-strength structural steel Q460C strip steel and production process thereof |
| CN105483310A (en) * | 2015-11-23 | 2016-04-13 | 东北大学 | Steelmaking batch grouping and production scheduling method for whole process production |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107999717A (en) * | 2017-12-11 | 2018-05-08 | 南京钢铁股份有限公司 | A kind of generous specification slab grade transition production technology |
| CN111331096A (en) * | 2020-03-19 | 2020-06-26 | 山西太钢不锈钢股份有限公司 | Method for eliminating bubbles of duplex stainless steel |
| CN111331096B (en) * | 2020-03-19 | 2022-02-25 | 山西太钢不锈钢股份有限公司 | Method for eliminating bubbles of duplex stainless steel |
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