CN107020359A - The construction technology of casting blank surface temperature can uniformly be reduced - Google Patents
The construction technology of casting blank surface temperature can uniformly be reduced Download PDFInfo
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- CN107020359A CN107020359A CN201710324757.XA CN201710324757A CN107020359A CN 107020359 A CN107020359 A CN 107020359A CN 201710324757 A CN201710324757 A CN 201710324757A CN 107020359 A CN107020359 A CN 107020359A
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- cooling
- strand
- construction technology
- casting blank
- surface temperature
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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
- B22D11/22—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
-
- 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
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
- B22D11/1246—Nozzles; Spray heads
-
- 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
- B22D11/163—Controlling or regulating processes or operations for cutting cast stock
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a kind of construction technology, especially disclose it is a kind of can uniformly reduce the construction technology of casting blank surface temperature, belong to metallurgical cooling device design and manufacturing technology field.There is provided a kind of in control process and can not result in the construction technology of serious casting blank bending and deterioration effectively by the temperature control of two continuous casting billets after the completion of cold below set point of temperature.Described construction technology includes secondary cooling scheme, strand and goes out that straightening is straight and strand cut-sytle pollination, and described construction technology also includes the uniform water cooling that is delayed, and the uniform water cooling of described delay is arranged in strand and goes out straightening directly between strand cut-sytle pollination.
Description
Technical field
The present invention relates to a kind of construction technology, the construction work of casting blank surface temperature can be uniformly reduced more particularly, to a kind of
Skill, belongs to metallurgical cooling device design and manufacturing technology field.
Background technology
At present, domestic small billet section casting machine pulling rate is substantially all in more than 2m/min.In the case of high pulling rate, the table of strand
Face temperature is of a relatively high, and strand is when ejection region is offline, and surface temperature still reaches more than 700 DEG C even more highs, due to strand
The form of lifting magnet crane is used offline mode more.Lifting magnet crane operationally, mainly by electromagnetic disc produce magnetic working, but electricity
Disk magnetic force is affected by temperature larger, it requires that strand temperature is necessarily less than less than 600 DEG C.To meet the offline temperature of strand
It is required that, taking the mode for cooling of directly fetching water to cool steel mill of the country at present, so, strand is quickly uneven in the situation of high temperature more
Cooling easily causes casting blank bending and deterioration, so that the problems such as causing quality uncontrollable and be offline more difficult.
1st, a kind of di-cold spray nozzle method for arranging and secondary cooling scheme method for improving casting billet surface plasticity of CN104607609A, public
Open day：2015.05.13.The present invention relates to a kind of di-cold spray nozzle method for arranging for improving casting billet surface plasticity and secondary cooling scheme side
Method, in the method, conticaster vertical section set wide face nozzle and leptoprosopy nozzle, and wide face nozzle and leptoprosopy nozzle are respectively by independence
Circuit controls；After continuous casting billet goes out crystallizer, using above-mentioned di-cold spray nozzle method for arranging, pressure cooling, two first are carried out to strand
Secondary cooling water inflow is 15~40m3/h, and casting blank surface temperature is quickly down to less than 750 DEG C；It is then turned off vertical section lower area
Leptoprosopy and wide face angle portion nozzle, make casting blank surface temperature fast temperature rising to 1100 DEG C or so, bending section to horizontal segment takes routine
Refrigerating mode, secondary cooling water is 2~10m3/h.In the above-mentioned methods, casting blank surface temperature change course makes blank surface
Tissue be experienced once " heat treatment ", and blank surface tissue is significantly refined；Blank surface forms Austria of densification after rising again
Family name's body tissue, while inhibiting the amount of precipitation of grain boundary ferrite film, fundamentally improves the high-temp plastic of blank surface.
2nd, a kind of continuous casting secondary cooling automatic control systems of CN103008597A and its control method, publication date：
2013.04.03.A kind of continuous casting secondary cooling control system and its control method, are the secondary coolings based on compressed air temperature
Control system, including temperature detecting unit, pressure sensing cell, adjustment unit, programmable logic control unit, host computer list
Member, is characterized in pressure sensing cell, and temperature detecting unit and adjustment unit pass through cable with programmable logic control unit respectively
It is connected, host computer unit is connected with programmable logic control unit by network.Programmable logic control unit is dynamically adjusted
The setting working pressure of whole two cold compressions air, controls pneumatic control valve perseveration until operating pressure reaches setting afterwards
Pressure.Compressed air temperature fluctuation is controlled by the present invention as the eliminable disturbance of one kind, enhances secondary cooling pair
The response speed of compressed air temperature fluctuation, can run through the pneumatically operated pressure of change to compensate compressed air temperature ripple
The dynamic influence produced to casting blank surface temperature, overcomes governing factor in current control method to consider incomplete deficiency.
3rd, a kind of methods for controlling casting blank surface temperature at conticaster straightening point of CN103071774B, publication date：
2014.07.23.The present invention relates to a kind of method for controlling the casting blank surface temperature at conticaster straightening point, belong to continuous casting billet matter
Measure control technology field.It is particularly suitable for use in being provided with the company of the crack sensitivity steel grade of longer air cooling zone before conticaster straightening point
Casting production.Not enough problem is controlled to the cooling procedure of crack sensitive steel kind for two traditional cold parameter decreasing water distribution methods, proposed
A kind of improved two cold parameter decreasing water distribution method, can either ensure under work pulling rate, strand each cooling section in cooling procedure
Casting blank surface temperature reach sets target temperature, surface temperature of the strand at straightening point avoids " the fragility temperature of poured steel grade
Degree is interval ", under the production that Actual Casting Speed deviation work pulling rate is can guarantee that again, the close setting mesh of casting blank surface temperature of each cooling section
Temperature is marked, strand is basically unchanged in the cooldown rate of each cooling section, and strand is stably avoided by the surface temperature at straightening point
" brittle temperature range " of poured steel grade.
The following a kind of improvement provided to the existing technology of kind both for relevant art problem, although solve respective
Technical problem, but still there is continuous casting billet and go out two cold rear temperature and raise again, it is necessary to take the mode for cooling of directly fetching water again
Cooling, so as to cause strand to easily cause casting blank bending and deterioration in the quick inhomogeneous cooling of situation of high temperature, so as to draw
Play the problems such as quality is uncontrollable and offline more difficult.
The content of the invention
The technical problems to be solved by the invention are：Offer is a kind of can be effectively by the temperature of two continuous casting billets after the completion of cold
Degree control does not result in the construction work of serious casting blank bending and deterioration again below set point of temperature in control process
Skill.
It is to solve the technical scheme that is used of above-mentioned technical problem：It is a kind of uniformly to reduce applying for casting blank surface temperature
Work technique, including secondary cooling scheme, strand go out that straightening is straight and strand cut-sytle pollination, and it is uniform that described construction technology also includes delay
Water cooling, the uniform water cooling of described delay is arranged in strand and goes out straightening directly between strand cut-sytle pollination.
The beneficial effects of the invention are as follows：The application by increasing the uniform water cooling that is delayed together in existing construction technology,
And the uniform water cooling of the delay is arranged in strand goes out straightening directly between strand cut-sytle pollination.So, it is cold in continuous casting billet completion two
When going out the straight process of straightening into strand afterwards, due to when the blank surface temperature that base core high-temperature delayed is caused rises, then by installed in
Strand goes out the delay uniform water cooling of the straightening directly between strand cut-sytle pollination, you can with effectively by the temperature control of continuous casting billet
Below set point of temperature.And because the technology that the uniform water cooling of the delay overcomes the quick inhomogeneous cooling that existing skill is used is asked
Topic, so as to so that control process does not result in serious casting blank bending and deterioration, it is to avoid cause the uncontrollable of quality and
Offline difficult the problems such as.
It is further that the described uniform water cooling of delay is to be dropped along multigroup annular water spray of strand conveying direction order arrangement
Temperature.
Such scheme it is preferable that, annular spray cooling described in each group is circumferential on each side along strand
Arrange there is cooling to spray water.
It is further, the respective independent control of the annular spray cooling described in each group.
Such scheme it is preferable that, described respective independent control is the annular spray cooling difference described in each group
By being realized with the independent connection of the total flow tube of cooling water.
It is further that, along strand conveying direction, the arrangement spacing of annular spray cooling is no more than described in two adjacent groups
1.5m。
Brief description of the drawings
Fig. 1 can uniformly reduce the uniform water cooling of delay that the construction technology of casting blank surface temperature is related to whole for the present invention
The schematic diagram of position in individual technical process；
The single group annular spray cooling that Fig. 2 is related to for the construction technology that the present invention can uniformly reduce casting blank surface temperature
Schematic diagram.
Marked in figure：Be delayed uniform water cooling 1, strand 2, annular spray cooling 3.
Embodiment
It is that one kind of the invention provided can as shown in Figure 1 and Figure 2 to solve technical problem present in prior art
The effective temperature control by two continuous casting billets after the completion of cold is not resulted in serious again below set point of temperature in control process
Casting blank bending and deterioration construction technology.Described construction technology, including secondary cooling scheme, strand go out straightening it is straight and
Strand cut-sytle pollination, described construction technology also includes the uniform water cooling 1 that is delayed, and the uniform water cooling 1 of described delay is arranged in strand
Go out straightening directly between strand cut-sytle pollination.The application by increasing the uniform water cooling 1 that is delayed together in existing construction technology,
And the uniform water cooling 1 of the delay is arranged in strand goes out straightening directly between strand cut-sytle pollination.So, it is cold in continuous casting billet completion two
When going out the straight process of straightening into strand afterwards, during the blank surface temperature rise caused due to base core high-temperature delayed, then pass through and install
Go out the uniform water cooling 1 of the delay of straightening directly between strand cut-sytle pollination in strand, you can with effectively by the temperature of continuous casting billet
Control is below set point of temperature.And because the uniform water cooling 1 of the delay overcomes the quick inhomogeneous cooling that existing skill is used
Technical problem, so as to so that control process does not result in serious casting blank bending and deterioration, it is to avoid cause quality not
Controllable and offline difficult the problems such as.
In above-mentioned embodiment, in order to both ensure effective uniform decrease in temperature, while be unlikely to significantly to increase production again
Expense, but also conveniently operate and as the case may be, realize that cooling is controlled in real time, the uniform water cooling 1 of described delay is
Along multigroup annular spray cooling 3 of the conveying direction of strand 2 order arrangement；Annular spray cooling 3 described in each group was along strand 2 weeks
To arrangement has cooling water spray on each side 4；The respective independent control of annular spray cooling 3 described in each group；It is described
The independent connection that passes through respectively with the total flow tube of cooling water for the annular spray cooling 3 described in each group of respective independent control it is real
It is existing；Along the conveying direction of strand 2, the arrangement spacing of annular spray cooling 3 is no more than 1.5m described in two adjacent groups.Pass through each group of institute
The respective independent control of annular spray cooling 3 is stated, cooling control in real time just can be very easily realized, and along strand 2 weeks
To each side 4 on arrange there is cooling to spray water, and along the conveying direction of strand 2, annular water spray drop described in two adjacent groups
The arrangement spacing of temperature 3 is no more than 1.5m, can also have and ensure effective uniform decrease in temperature to greatest extent.
After above-mentioned construction technology, by trial operation, strand can realize uniform cooling, cooling up to 200
DEG C or so, the surface quality and internal soundness of strand stablize controlled, does not occur strand flexural deformation caused by inhomogeneous cooling and shows
As achieving preferable economic benefit and social benefit.
Claims (6)
1. a kind of can uniformly reduce the construction technology of casting blank surface temperature, including secondary cooling scheme, strand go out straightening directly and cast
Base cut-sytle pollination, it is characterised in that：Described construction technology also includes be delayed uniform water cooling (1), the uniform water cooling of described delay
(1) it is arranged in strand and goes out straightening directly between strand cut-sytle pollination.
2. according to claim 1 can uniformly reduce the construction technology of casting blank surface temperature, it is characterised in that：Described
The uniform water cooling that is delayed (1) is multigroup annular spray cooling (3) along strand (2) conveying direction order arrangement.
3. according to claim 2 can uniformly reduce the construction technology of casting blank surface temperature, it is characterised in that：Each group
Described annular spray cooling (3) arranges have cooling to spray water along strand (2) is circumferential on each side (4).
4. it can uniformly reduce the construction technology of casting blank surface temperature according to Claims 2 or 3, it is characterised in that：Often
The respective independent control of annular spray cooling (3) described in one group.
5. according to claim 4 can uniformly reduce the construction technology of casting blank surface temperature, it is characterised in that：Described
Respective independent control is that the annular spray cooling (3) described in each group is real by the independent connection with the total flow tube of cooling water respectively
It is existing.
6. according to claim 5 can uniformly reduce the construction technology of casting blank surface temperature, it is characterised in that：Along strand
(2) conveying direction, the arrangement spacing of annular spray cooling (3) is no more than 1.5m described in two adjacent groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710324757.XA CN107020359A (en) | 2017-05-10 | 2017-05-10 | The construction technology of casting blank surface temperature can uniformly be reduced |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710324757.XA CN107020359A (en) | 2017-05-10 | 2017-05-10 | The construction technology of casting blank surface temperature can uniformly be reduced |
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| CN107020359A true CN107020359A (en) | 2017-08-08 |
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| CN201710324757.XA Pending CN107020359A (en) | 2017-05-10 | 2017-05-10 | The construction technology of casting blank surface temperature can uniformly be reduced |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109702162A (en) * | 2019-03-06 | 2019-05-03 | 山东钢铁股份有限公司 | A kind of conticaster and its casting billet surface clearing apparatus |
| CN112792309A (en) * | 2020-12-18 | 2021-05-14 | 河钢股份有限公司承德分公司 | Three-section cooling water ring device and cooling method for billet continuous casting machine |
| CN115041655A (en) * | 2022-07-04 | 2022-09-13 | 重庆钢铁股份有限公司 | Method for preventing casting blank from bending under high temperature |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3515202A (en) * | 1966-08-20 | 1970-06-02 | Paderwerk Gebr Benteler Schlos | Method for continuous casting of metal ingots |
| US4424855A (en) * | 1980-07-10 | 1984-01-10 | Nippon Steel Corporation | Method for cooling continuous casting |
| JP2982622B2 (en) * | 1994-07-01 | 1999-11-29 | 住友金属工業株式会社 | Cooling method of slab in continuous casting |
| CN101193712A (en) * | 2005-07-19 | 2008-06-04 | 乔瓦尼·阿尔韦迪 | Method and device for manufacturing steel plate without interruption |
| CN101678447A (en) * | 2007-06-28 | 2010-03-24 | 住友金属工业株式会社 | Method of continuously casting small-section billet |
| KR20120074745A (en) * | 2010-12-28 | 2012-07-06 | 주식회사 포스코 | Apparatus for controlling temperature of piece |
| CN103464708A (en) * | 2013-09-06 | 2013-12-25 | 上海宝锋工程技术有限公司 | Secondary cooling nozzle arranging method for silicon steel slab continuous casting |
| CN205599891U (en) * | 2016-04-05 | 2016-09-28 | 中国重型机械研究院股份公司 | Novel billet casting secondary cooling water adjustment mechanism |
-
2017
- 2017-05-10 CN CN201710324757.XA patent/CN107020359A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3515202A (en) * | 1966-08-20 | 1970-06-02 | Paderwerk Gebr Benteler Schlos | Method for continuous casting of metal ingots |
| US4424855A (en) * | 1980-07-10 | 1984-01-10 | Nippon Steel Corporation | Method for cooling continuous casting |
| JP2982622B2 (en) * | 1994-07-01 | 1999-11-29 | 住友金属工業株式会社 | Cooling method of slab in continuous casting |
| CN101193712A (en) * | 2005-07-19 | 2008-06-04 | 乔瓦尼·阿尔韦迪 | Method and device for manufacturing steel plate without interruption |
| CN101678447A (en) * | 2007-06-28 | 2010-03-24 | 住友金属工业株式会社 | Method of continuously casting small-section billet |
| KR20120074745A (en) * | 2010-12-28 | 2012-07-06 | 주식회사 포스코 | Apparatus for controlling temperature of piece |
| CN103464708A (en) * | 2013-09-06 | 2013-12-25 | 上海宝锋工程技术有限公司 | Secondary cooling nozzle arranging method for silicon steel slab continuous casting |
| CN205599891U (en) * | 2016-04-05 | 2016-09-28 | 中国重型机械研究院股份公司 | Novel billet casting secondary cooling water adjustment mechanism |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109702162A (en) * | 2019-03-06 | 2019-05-03 | 山东钢铁股份有限公司 | A kind of conticaster and its casting billet surface clearing apparatus |
| CN112792309A (en) * | 2020-12-18 | 2021-05-14 | 河钢股份有限公司承德分公司 | Three-section cooling water ring device and cooling method for billet continuous casting machine |
| CN115041655A (en) * | 2022-07-04 | 2022-09-13 | 重庆钢铁股份有限公司 | Method for preventing casting blank from bending under high temperature |
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Application publication date: 20170808 |
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