CN106670414A - Set method of fixed segment depressing continuous caster depressing mode - Google Patents
Set method of fixed segment depressing continuous caster depressing mode Download PDFInfo
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- CN106670414A CN106670414A CN201610947453.4A CN201610947453A CN106670414A CN 106670414 A CN106670414 A CN 106670414A CN 201610947453 A CN201610947453 A CN 201610947453A CN 106670414 A CN106670414 A CN 106670414A
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- section
- fan
- segment
- drafts
- depressing
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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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a set method of a fixed segment depressing continuous caster depressing mode and belongs to the technical field of steelmaking and continuous casting. A continuous caster has t sector segments with the depressing function; a starting sector segment with the depressing function is defined as a segment 1, and then the following sector segments with the depressing function are defined as a segment 2, a segment 3, a segment 4......, a segment i-1, a segment i, a segment i+1......a segment t; the segment i is an arbitrary sector segment at the middle part; and as for arbitrary sector segment i, the depressing quantity of an inlet of the arbitrary sector segment i is defined as ni-1, the depressing quantity of an outlet is defined as ni, and the depressing quantity ni-1 of the inlet of the segment i is equal to the depressing quantity ni-1 of the outlet of the segment i-1. The set method has the advantages of easiness in realization and suitability for various drawing speeds.
Description
Technical field
The invention belongs to steel-making continuous casting technical field, more particularly to a kind of setting of canned paragraph pressure conticaster pressure pattern
Method.More particularly to a kind of establishing method that conticaster pressure pattern is depressed suitable for canned paragraph.
Background technology
The dynamic soft-reduction of conticaster is typically what is set according to steel billet center solid rate, steel billet center solid rate formula
For
In formula fs be solid rate, TLFor liquidus temperature, TSFor solidus temperature, T is the temperature at steel billet center.
For part conticaster, its whole fan-shaped section all possesses slighter compress function, therefore usual employing sets respectively solid rate
Dynamic soft-reduction is realized with the mode of drafts.Fs=0.5 positions drafts is such as set as 0mm, fs=0.7 positions drafts
For 3mm, fs=0.9 positions drafts is 5mm.When pulling rate changes, the position of fs positions also changes, and depresses therewith
Amount changes also with fs change in location.The method is referred to as dynamic soft-reduction.
Dynamic soft-reduction possesses the conticaster of slighter compress function suitable for full section, but for some conticasters, it possesses pressure
Under fan-shaped section only have fixed several sections, such as domestic certain conticaster, its fan-shaped section amounts to 12 sections, and it possesses the sector of press function
9 sections of Duan Wei, the 10th section, the 11st section and the 12nd section, the 8th section and fan-shaped section before do not possess press function, if used
Dynamic soft-reduction scheme, when solidification front just at the 7th, 8 and 9 sections when, do not possess press function due to 7,8 sections, then the 9th section
Drafts will be substantially excessive, so can not only damage continuous casting installation for casting, also not have press function, therefore for canned paragraph pressure
Conticaster, the pressure pattern for needing exploitation applicable therewith.
The content of the invention
Present invention aim at providing the establishing method that a kind of canned paragraph pressure conticaster depresses pattern, solve and fixing
On section pressure conticaster, realize avoiding first fan-shaped section for possessing press function to depress while dynamic soft-reduction function
The excessive problem of amount.Be suitable for cannot full section pressure conticaster.
A kind of canned paragraph pressure conticaster depresses the establishing method of pattern, and concrete steps and parameter are as follows：
1st, it is t to assume that conticaster possesses the fan-shaped section number of press function, will be provided with the initial fan-shaped section of press function
Section 1 is defined as, followed by the fan-shaped section for possessing press function section 2, section 3, section 4 ..., section i-1, section i, section i+ are respectively
1 ... section t.Section i is middle arbitrarily fan-shaped section, if such as t=5, it is section that the conticaster possesses the fan-shaped section of press function
1st, section 2, section 3, section 4 and section 5.
2nd, for any fan-shaped section i, the drafts of its entrance is defined as ni-1, and the drafts of outlet is defined as ni, i-th section
Entrance drafts ni-1 be equal to i-1 sections outlet drafts ni-1.The solid rate of i-th section of exit position steel billet center portion is fi.
Drafts ji given for any fan-shaped section i, ji can be changed for user, set solid rate fixed value k, and k values can supply use
Directly change at family.
1) variable i, i=0,1,2 ... t, the value of the given ji of user are given.
2) the given k values of user.
3) variable i is given, i=0,1,2 ... t make ni=0.
4) variable q and p are given, makes q=1,2,3 ... ..t, as fq-1 ＜ k and fq >=k, make p=1,2,3 ... q, np
=jp.
The entrance drafts of first fan-shaped section 1 for possessing press function be n0, first sector for possessing press function
Outlet drafts n1, the entrance drafts n1 of second fan-shaped section 2 for possessing press function of section 1, second possesses pressure work(
Outlet drafts n2, the entrance drafts n2 of the 3rd fan-shaped section 3 for possessing press function of the fan-shaped section 2 of energy, the i-th -1 tool
The outlet drafts ni-1 of fan-shaped section i-1 of standby press function, the entrance drafts of fan-shaped section i for possessing press function i-th
Ni-1, the outlet drafts ni of fan-shaped section i for possessing press function i-th, fan-shaped section t that possesses press function t-th enters
Mouthful drafts nt-1, the outlet drafts nt of fan-shaped section t for possessing press function t-th, first fan for possessing press function
The entry position steel billet center portion solid rate f0 of shape section 1, the exit position steel billet center portion of first fan-shaped section 1 for possessing press function
Solid rate f1, the exit position steel billet center portion solid rate f2 of second fan-shaped section 2 for possessing press function, the i-th -1 possesses pressure
The exit position steel billet center portion solid rate fi-1 of fan-shaped section i-1 of lower function, fan-shaped section i that possesses press function i-th goes out
Mouthful position steel billet center portion solid rate fi, the exit position steel billet center portion solid rate ft of fan-shaped section t for possessing press function t-th,
The drafts j1 that user gives is available for, the drafts j2 that user gives is available for, the j3 that user gives is available for, is available for what user gave
Ji-1, is available for the ji that user gives, and is available for the jt that user gives.
It is an advantage of the current invention that for the conticaster that cannot realize whole fan-shaped section press function, this side can be passed through
Method realizes dynamic soft-reduction function, so as to improve its center portion quality, and can avoid possess press function first
The excessive problem of fan-shaped section drafts.This method is easily achieved, and goes for various pulling rates, opens in continuous casting and pours lifting speed and envelope
Top process, can carry out reduction distribution according to actual solid rate.
Description of the drawings
Fig. 1 possesses the schematic diagram of press function fan-shaped section for conticaster.Wherein, first fan-shaped section for possessing press function
1, second fan-shaped section 2 for possessing press function, the 3rd fan-shaped section 3 for possessing press function, the i-th -1 possesses press function
Fan-shaped section i-1, fan-shaped section i for possessing press function i-th, fan-shaped section t for possessing press function t-th.
Specific embodiment
Embodiment 1
For the conticaster for having 5 fan-shaped sections to possess press function, user gives j1=2, j2=3.5, j3=4.5, j4
=5, j5=5.5.Simultaneously user gives k=1.2.All fan-shaped sections for possessing press function, the drafts of its entrance and exit
Initial value is 0, i.e. n0=n1=n2=n3=n4=n5=0.When pulling rate reaches 1.2m/min, system detectio to first
Possess the entry position steel billet center portion solid rate f0=0.5 of the fan-shaped section 1 of press function, first sector for possessing press function
The exit position steel billet center portion solid rate f1=0.7 of section 1, the exit position steel billet of second fan-shaped section 2 for possessing press function
Center portion solid rate f2=0.9, the exit position steel billet center portion solid rate f3=1.3 of the 3rd fan-shaped section 3 for possessing press function,
Now condition is reached, and variable q=3, then the now outlet drafts n1=j1=of first fan-shaped section 1 for possessing press function
2, the entrance drafts n1=j1=2 of second fan-shaped section 2 for possessing press function, second fan-shaped section for possessing press function
2 outlet drafts n2=j2=3.5, the entrance drafts n2=j2=3.5 of the 3rd fan-shaped section 3 for possessing press function,
The outlet drafts n3=j3=4.5 of the 4th fan-shaped section 3 for possessing press function, and other drafts n0=0 is while n4=
N5=0.
For the conticaster for having 5 fan-shaped sections to possess press function, user gives j1=2, j2=3.5, j3=4.5, j4
=5, j5=5.5.Simultaneously user gives k=1.At the beginning of all fan-shaped sections for possessing press function, the drafts of its entrance and exit
Initial value is 0, i.e. n0=n1=n2=n3=n4=n5=0.When pulling rate reaches 0.8m/min, system detectio is to first tool
The entry position steel billet center portion solid rate f0=0.9 of the fan-shaped section 1 of standby press function, first fan-shaped section for possessing press function
1 exit position steel billet center portion solid rate f1=1.2, now condition is reached, and variable q=1, then now first possess pressure
The outlet drafts n1=j1=2 of the fan-shaped section 1 of function, other drafts n0=0, while n2=n3=n4=n5=0.
Claims (1)
1. a kind of canned paragraph pressure conticaster depresses the establishing method of pattern, it is characterised in that concrete steps and parameter are as follows：
1) it is t to assume that conticaster possesses the fan-shaped section number of press function, will be provided with the initial fan-shaped section definition of press function
For section 1, followed by the fan-shaped section for possessing press function section 2, section 3, section 4 ..., section i-1, section i, section i+1 ... are respectively
Section t；Section i is middle arbitrarily fan-shaped section；
2) for any fan-shaped section i, the drafts of its entrance is defined as ni-1, the drafts of outlet is defined as ni, and i-th section enters
Mouth drafts ni-1 is equal to the outlet drafts ni-1 of i-1 sections；The solid rate of i-th section of exit position steel billet center portion is fi；For
The arbitrarily given drafts ji of fan-shaped section i, ji can be changed for user, set solid rate fixed value k, and it is straight that k values can supply user
Connect modification；
(1) variable i, i=0,1,2 ... t, the value of the given ji of user are given；
(2) the given k values of user；
(3) variable i is given, i=0,1,2 ... t make ni=0；
(4) variable q and p are given, makes q=1,2,3 ... ... t, as fq-1 ＜ k and fq >=k, make p=1,2,3 ... q, np=
jp。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610947453.4A CN106670414A (en) | 2016-10-26 | 2016-10-26 | Set method of fixed segment depressing continuous caster depressing mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610947453.4A CN106670414A (en) | 2016-10-26 | 2016-10-26 | Set method of fixed segment depressing continuous caster depressing mode |
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| CN106670414A true CN106670414A (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610947453.4A Pending CN106670414A (en) | 2016-10-26 | 2016-10-26 | Set method of fixed segment depressing continuous caster depressing mode |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109871627A (en) * | 2019-02-26 | 2019-06-11 | 武汉晨曦芸峰科技有限公司 | A kind of low pressure casting hole pine defect calculation method |
| CN110523937A (en) * | 2019-09-06 | 2019-12-03 | 首钢集团有限公司 | A kind of reduction method and device |
| CN115007827A (en) * | 2022-05-24 | 2022-09-06 | 柳州钢铁股份有限公司 | Slab caster solidification tail end reduction interval control method |
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2016
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109871627A (en) * | 2019-02-26 | 2019-06-11 | 武汉晨曦芸峰科技有限公司 | A kind of low pressure casting hole pine defect calculation method |
| CN109871627B (en) * | 2019-02-26 | 2023-05-05 | 武汉晨曦芸峰科技有限公司 | Low-pressure casting hole loosening defect calculation method |
| CN110523937A (en) * | 2019-09-06 | 2019-12-03 | 首钢集团有限公司 | A kind of reduction method and device |
| CN110523937B (en) * | 2019-09-06 | 2021-07-23 | 首钢集团有限公司 | Pressing method and device |
| CN115007827A (en) * | 2022-05-24 | 2022-09-06 | 柳州钢铁股份有限公司 | Slab caster solidification tail end reduction interval control method |
| CN115007827B (en) * | 2022-05-24 | 2023-06-06 | 柳州钢铁股份有限公司 | Control method for pressing interval of solidification tail end of slab continuous casting machine |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 100041 Shijingshan District, Beijing 101120001 Applicant after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan District, Beijing 101120001 Applicant before: Capital Iron & Steel General Company |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20170517 |