CN106825465B - A kind of crystallizer preventing slab defects - Google Patents
A kind of crystallizer preventing slab defects Download PDFInfo
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- CN106825465B CN106825465B CN201710142556.8A CN201710142556A CN106825465B CN 106825465 B CN106825465 B CN 106825465B CN 201710142556 A CN201710142556 A CN 201710142556A CN 106825465 B CN106825465 B CN 106825465B
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- water
- cooling
- cooling trough
- crystallizer
- water tank
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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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/055—Cooling the moulds
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a kind of crystallizers for preventing defect, belong to crystallizer technology field.A kind of crystallizer preventing defect, including copper sheet and water tank, cooling trough is arranged in copper sheet, an intake chamber and multiple water-supplying chamber is arranged in water tank, cooling trough is connected to intake chamber with water-supplying chamber, at least one is arranged in meniscus surface area for the multiple water-supplying chamber, and the lower section of meniscus surface area is arranged at least one.The sectional area of cooling trough becomes smaller in meniscus surface area, and water-supplying chamber can connect valve, the water flow of meniscus surface area is adjusted by control water flow, playing reduces crystallizer meniscus area intensity of cooling, reduce meniscus area contraction change amplitude, more evenly, effectively prevention or reduction continuous casting billet cracks for the formation and growth for making continuous casting billet, improves continuous casting billet quality.
Description
Technical field
The present invention relates to a kind of crystallizers for preventing defect, belong to crystallizer technology field, and in particular to slab, square billet connect
Cast crystallizer technology field.
Background technique
Continuous casting billet has various defects, and the method for preventing various defects from generating is also very much, wherein the generation of many defects with
Key equipment-crystallizer of continuous casting is related, and many defects of continuous casting billet are generated at meniscus, and meniscus nearby exports
Heat too much and derived heat it is uneven, crackle and bleed-out can be caused, in particular with people to generation efficiency requirement, draw
Speed is higher and higher, and nearby derived heat is more violent for meniscus, and derived heat is more uneven, thus caused by crackle and
Bleed-out probability increase is more frequent.Slab heat derives rely on taking out of for continuous cast mold cooling water, and continuous casting crystallizer copper plate is cold
But the channel of water is unanimous between the higher and lower levels, and the design of water is all consistent up and down.With the raising of pulling rate, it is desirable that total cooling
Water increases, and the heat as derived from meniscus is certainly more, because meniscus contraction change amplitude increases, and meniscus is caused to export
Heat will be more uneven, defect is naturally more, more frequently.
In order to prevent and treat various defects, there are many technological means solved for the prior art.Notification number is 203155963 U of CN
Patent document disclose it is a kind of be poured square billet novel crystallization device, on the basis of plate slab crystallizer, pass through installation shunt dress
The production for realizing square billet is set, so that plate slab crystallizer production product has the characteristics that diversification；Compared to redesign square billet knot
Brilliant device, the application of part flow arrangement reduce the cost of equipment；Since part flow arrangement has the characteristics of good heat conductivity, rapid heat dissipation,
Meanwhile cooling water is passed through, so that the partial heat of high-temperature molten steel is taken away through the part flow arrangement water that is cooled, improves slab crystallization
The service life of device；In the process of setting of molten steel, each section green shell is uniformly cooled down, and growth also more uniformly, avoids casting
The generation of the defects of checking line, bulge improves the lumber recovery of slab.
But this patent really utilizes wider plate slab crystallizer, narrow side crystallizer is inserted into width direction, by slab
Crystallizer is divided into several square blank crystallizers, the narrow side crystallizer because its both sides must all cool down, so both sides must all have it is cold
But water hole, rather than so-called shunting, above-mentioned document is big in the water flow of meniscus surface area, and conduction inequality is even, does not control stream
The component of amount causes heat conduction uncontrollable, prevents crack defect effect bad.
Notification number is that the patent document of 202155493 U of CN discloses a kind of wide-surface copper plate of crystallizer of continuous slab casting machine
Cooling structure, it is unreasonable for current broadside copper board of continuous casting crystallizer for thin slab blank cooling structure, lead to wide face copper sheet and slab temperature
Degree inhomogeneous cooling easily causes the problems such as low copper sheet severe crack, service life, slab quality defect to be improved, wide to crystallizer
Design is optimized in face copper sheet cooling water channel, and cooling water channel diameter reduces, quantity increases, and is distributed according to liquid steel temperature
Situation carries out reasonable layout, is effectively improved the wide face intensity of cooling of crystallizer, improves the wide face Temperature Distribution of crystallizer, reduces crystallizer
Copper sheet surface temperature difference improves slab quality.
For above-mentioned patent sink chilling room every uneven, cooling is also uneven, and interval can be designed uniformly by becoming water hole, temperature
It is distributed relatively uniform.It is thermally conductive in order to carry out while cooling, use the reduction of cooling water channel diameter, quantity increase, and root
Reasonable layout is carried out according to liquid steel temperature distribution situation, does not reduce in the water flow of meniscus surface area, equally exists meniscus
The water flow in region is big, and conduction inequality is even, does not control the component of flow, causes heat conduction uncontrollable, crackle is prevented to lack
It is bad to fall into effect.
Summary of the invention
In view of this, in view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of thermally conductive uniform, in meniscus area
Domain can control the device of cooling flow, solve meniscus surface area conduction inequality existing in the prior art is even, flow can not
Control, the technical issues of so as to cause the defects of crackle.
In order to achieve the above objectives, the invention adopts the following technical scheme:
Cooling trough is arranged in a kind of crystallizer preventing defect, including copper sheet and water tank, copper sheet, and a water inlet is arranged in water tank
Room and multiple water-supplying chamber, cooling trough are connected to intake chamber with water-supplying chamber, at least one setting of the multiple water-supplying chamber is curved
Lunar surface region, the lower section of meniscus surface area is arranged at least one.
Preferably, the cooling trough is cooling trough one in meniscus surface area, is cooling trough two below meniscus, cold
But the sectional area of sink one is less than the sectional area of cooling trough two.
Preferably, intake chamber is located at water tank lower part, is connected to cooling trough two, at least one water-supplying chamber and cooling trough one
Connection, at least one water-supplying chamber are connected to the upper end of the lower end of the cooling trough one and cooling trough two.
Preferably, the water-supplying chamber one being connected to cooling trough one is connected to water tank respective channel one, with the cooling trough
The water-supplying chamber two that one lower end and the upper end of cooling trough two are connected to is connected to water tank respective channel two, the water tank respective channel
One or water tank respective channel two on valve is set.
Preferably, the channel of the intake chamber and water-supplying chamber at most has one to be not provided with flowmeter.
Preferably, including fast changeable water tank backboard increased between water tank and copper sheet, intake chamber and water-supplying chamber's transfer
To the water tank backboard.
Preferably, the cooling water inflow that outlet pipe one flows out is the 40%~70% of total cooling water inflow.
Preferably, the cooling water inflow that outlet pipe one flows out is the 50%~60% of total cooling water inflow.
Preferably, the cooling water inflow of cooling trough one is adjusted by adjusting the sectional area of cooling trough one.
Preferably, the cooling water inflow of cooling trough one is controlled by adjusting the size of the valve opening degree.
The beneficial effects of the present invention are:
1, cooling trough is arranged in copper sheet in the present invention, easily fabricated as the channel of cooling water, in the water supply knot of crystallizer
Change is made on structure, so that water flow reduces in meniscus surface area, but total cooling water flow is constant, plays reduction crystallizer
Meniscus area intensity of cooling reduces meniscus area contraction change amplitude, and the formation and growth for making continuous casting billet more evenly, effectively prevent
Or reduce continuous casting billet and crack, continuous casting billet quality is improved, can satisfy requirement big to pulling rate in the prior art.
2, by setting tap hole, it is reduced by flow before water flow reaches meniscus surface area, can be effectively acted as uniformly
Cooling effect.
3 and can with integrated use control water stream channel sectional area or be arranged valve technological means come specifically adjust
By the water flow of meniscus surface area, sectional area under the sectional area in the channel in meniscus area is less than, or in water tank phase
It answers channel that valve is set, water flow is controlled by the accurate adjusting of valve, water flow reaches the reduction of meniscus area through-current capacity, reaching
Technical effect to accurate control cooling effect changes meniscus area so that the water in control meniscus area is very handy
Cooling water inflow, reduce the cooling water inflow in meniscus area, meniscus area intensity of cooling reduce, heat flow density reduce, meniscus
Region extends, and heat transfer is relatively uniform, and generally speaking to crystallizer, cooling water inflow is not reduced, and whole cooling capacity does not change
Become, is substantially reduced in the factor that meniscus surface area generates continuous casting defect, continuous casting defect, the water-flowing amount control of meniscus area can be effectively eliminated
System not only improves the 40%~80% of total Water and reduces continuous casting defect, and avoids bonding steel leakage.
4, flowmeter can be set in the present invention, accurately to measure the flow by meniscus surface area, facilitates research flow
To the influence that defect generates, to be specifically chosen suitable flow parameter.
5, the present invention also provides installation and removal can be can be convenient with quick-replaceable backboard, reduce labor intensity.
6, for the present invention by specifically testing, the flow for finally obtaining suitable meniscus surface area is 40%~70%, best
It is 50%~60%, under this flow, crack defect is few, and continuous casting quality significantly improves.
Detailed description of the invention
Fig. 1 is the crystallizer sectional elevation schematic diagram for the sink that meniscus surface area shoals.
Fig. 2 is the copper plate of crystallizer sink surface schematic diagram that meniscus sink narrows.
Fig. 3 is the crystallizer sectional elevation schematic diagram for the sink that meniscus surface area narrows.
Fig. 4 is the crystallizer sectional elevation schematic diagram that crystallizer water tank is made of water tank and water tank backboard.
Fig. 5 is another schematic diagram for the crystallizer sectional elevation that crystallizer water tank is made of water tank and water tank backboard.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Embodiment one: as shown in Figure 1, a kind of crystallizer for preventing defect, including copper plate of crystallizer 1 and to crystallizer copper
Plate plays a supportive role and cools down the crystallizer water tank 2 of water flowing effect, and an intake chamber 3 is arranged in the crystallizer water tank and two go out
Water chamber, one 4a of water-supplying chamber and two 4b of water-supplying chamber, the intake chamber 3 are connected to water inlet pipe 5, one 4a of water-supplying chamber and outlet pipe one
6a connection, two 4b of water-supplying chamber are connected to two 6b of outlet pipe, and valve 7, the outlet pipe two are arranged on two 6b of outlet pipe
6b is connected to valve 7, and multiple equally distributed cooling troughs are arranged in the copper plate of crystallizer, and the cooling trough is divided into two
Point, first part is normal cooling trough 1, and second part is the cooling trough 29 to shoal in meniscus surface area, the knot
One 4a of water-supplying chamber of brilliant device water tank is connected to cooling trough 29, two 4b of water-supplying chamber and the cooling water of the crystallizer water tank
The lower end of slot 29 is connected to the top of cooling trough 1, that is, flows into the cooling water of crystallizer water tank, a part is through the cooling
Sink 29 and one 4a of the water-supplying chamber and one 6a of outlet pipe flow out, another part cooling water without the cooling trough 29, and
That two 4b of water-supplying chamber and two 6b of outlet pipe and valve 7 are directly entered by one 8 top of cooling trough and flowed out, it is described into
Flowmeter 10 is set on water pipe 5, flowmeter 11 is set on one 6a of outlet pipe, flowmeter is set on two 6b of outlet pipe
12, the size of 7 opening degree of size and the valve of the sectional area by controlling the cooling trough 29, to realize convection current
The control of cooling water inflow through the cooling trough 29 and one 4a of the water-supplying chamber and one 6a of outlet pipe outflow, wherein flowing through institute
State cooling trough 29 and one 4a of the water-supplying chamber and one 6a of outlet pipe outflow cooling water inflow be total cooling water inflow 40%~
50%。
Embodiment two: as shown in Figure 2 and Figure 3, a kind of crystallizer preventing slab defects, including copper plate of crystallizer 1 and right
Copper plate of crystallizer plays a supportive role and cools down the crystallizer water tank 2 of water flowing effect, and an intake chamber 3 is arranged in the crystallizer water tank
With Liang Ge water-supplying chamber, one 4a of water-supplying chamber and two 4b of water-supplying chamber, the intake chamber 3 is connected to water inlet pipe 5, one 4a of water-supplying chamber and
One 6a of outlet pipe connection, two 4b of water-supplying chamber are connected to two 6b of outlet pipe, and valve 7 is arranged on the outlet pipe 6b bis-, described
Two 6b of outlet pipe is connected to valve 7, and multiple equally distributed cooling troughs, the cooling trough point is arranged in the copper plate of crystallizer
For two parts, first part is normal cooling trough 1, and second part is the cooling trough 29 to narrow in meniscus surface area,
One 4a of water-supplying chamber of the crystallizer water tank is connected to cooling trough 29, two 4b of water-supplying chamber of the crystallizer water tank with it is described
The lower end of cooling trough 29 is connected to the top of cooling trough 1, that is, flows into the cooling water of crystallizer water tank, a part is through institute
It states cooling trough 29 and one 4a of the water-supplying chamber and one 6a of outlet pipe flows out, another part cooling water is without the cooling trough
29, but two 4b of water-supplying chamber and two 6b of outlet pipe and valve 7 are directly entered by one 8 top of cooling trough and flowed out,
Flowmeter 10 is set on the water inlet pipe 5, flowmeter 11 is set on one 6a of outlet pipe, by controlling the cooling trough two
The size of 7 opening degree of the size of 9 sectional area and the valve, thus realize to flow through the cooling trough 29 and it is described go out
The control of the cooling water inflow of one 4a of water chamber and one 6a of outlet pipe outflow, wherein flowing through the cooling trough 29 and the water-supplying chamber
The cooling water inflow of one 4a and one 6a of outlet pipe outflow is the 60%~70% of total cooling water inflow.
Embodiment three: as shown in figure 4, a kind of crystallizer for preventing slab defects, including copper plate of crystallizer 1 and to crystallization
Device copper sheet play a supportive role and cool down the crystallizer water tank of water flowing effect, the crystallizer water tank, including water tank 2a and water tank with
Intake chamber 3 and water-supplying chamber one are arranged on the water tank backboard by increased fast changeable water tank backboard 2b between copper plate of crystallizer
4a, two 4b of water-supplying chamber, the intake chamber 3 are connected to water inlet pipe 5, one 4a of water-supplying chamber and water tank 2a respective channel and outlet pipe
One 6a connection, two 4b of water-supplying chamber are connected to water tank 2a respective channel and two 6b of outlet pipe, are arranged on one 6a of outlet pipe
Valve 7, one 6a of outlet pipe are connected to valve 7, and multiple equally distributed cooling troughs are arranged in the copper plate of crystallizer, described
Cooling trough is divided into two parts, and first part is normal cooling trough 1, and second part is cold to shoal in meniscus surface area
But one 4a of water-supplying chamber of sink 29, the crystallizer water tank is connected to cooling trough 29, the water-supplying chamber of the crystallizer water tank
Two 4b are connected to the top of the lower end of the cooling trough 29 and cooling trough 1, that is, flow into the cooling water of crystallizer water tank,
A part is flowed out through the cooling trough 29 and one 4a of the water-supplying chamber and one 6a of outlet pipe, and another part cooling water is without institute
Cooling trough 29 is stated, but two 4b of water-supplying chamber and two 6b of outlet pipe is directly entered by one 8 top of cooling trough and is flowed
Out, flowmeter 10 is set on the water inlet pipe 5, flowmeter 12 is set on two 6b of outlet pipe, by controlling the cooling water
The size of 7 opening degree of the size of the sectional area of slot 29 and the valve, to realize to flowing through the cooling trough 29 and institute
State one 4a of water-supplying chamber and one 6a of outlet pipe outflow cooling water inflow control, wherein flow through the cooling trough 29 and it is described go out
The cooling water inflow of one 4a of water chamber and one 6a of outlet pipe outflow is the 70%~80% of total cooling water inflow.
Example IV: as shown in figure 5, a kind of crystallizer for preventing slab defects, including copper plate of crystallizer 1 and to crystallization
Device copper sheet plays a supportive role and cools down the crystallizer water tank of water flowing effect, the crystallizer water tank, including water tank and water tank and knot
Intake chamber 3 and one 4a of water-supplying chamber are arranged on the water tank backboard, goes out for increased fast changeable water tank backboard between brilliant device copper sheet
Two 4b of water chamber, the intake chamber 3 are connected to water inlet pipe 5, and one 4a of water-supplying chamber and water tank respective channel and one 6a of outlet pipe connect
Logical, two 4b of water-supplying chamber is connected to water tank respective channel and two 6b of outlet pipe, and valve 7, institute are arranged on two 6b of outlet pipe
It states two 6b of outlet pipe to be connected to valve 7, multiple equally distributed cooling troughs, the cooling trough is arranged in the copper plate of crystallizer
It is divided into two parts, first part is normal cooling trough 1, and second part is the cooling trough two to narrow in meniscus surface area
9, one 4a of water-supplying chamber of the crystallizer water tank is connected to cooling trough 29, two 4b of water-supplying chamber of the crystallizer water tank and institute
The lower end for stating cooling trough 29 is connected to the top of cooling trough 1, that is, flows into the cooling water of crystallizer water tank, a part warp
The cooling trough 29 and one 4a of the water-supplying chamber and one 6a of outlet pipe flow out, and another part cooling water is without the cooling water
Slot 29, but two 4b of water-supplying chamber and two 6b of outlet pipe and valve 7 are directly entered by one 8 top of cooling trough and flowed
Out, flowmeter 11 is set on one 6a of outlet pipe, flowmeter 12 is set on two 6b of outlet pipe, by controlling the cooling
The size of 7 opening degree of the size of the sectional area of sink 29 and the valve, to realize to flowing through 29 He of cooling trough
The control of the cooling water inflow of one 4a of water-supplying chamber and one 6a of outlet pipe outflow, wherein flowing through the cooling trough 29 and described
The cooling water inflow of one 4a of water-supplying chamber and one 6a of outlet pipe outflow is the 50%~60% of total cooling water inflow.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, this field is common
Other modifications or equivalent replacement that technical staff makes technical solution of the present invention, without departing from technical solution of the present invention
Spirit and scope, be intended to be within the scope of the claims of the invention.
Claims (4)
1. a kind of crystallizer for preventing defect, which is characterized in that including copper sheet and water tank, cooling trough is arranged in copper sheet, and water tank is set
It sets an intake chamber and multiple water-supplying chamber, cooling trough is connected to intake chamber with water-supplying chamber, the multiple water-supplying chamber at least one
A to be arranged in meniscus surface area, the lower section of meniscus surface area is arranged at least one, and the cooling trough is in meniscus surface area
For cooling trough one, meniscus lower section is cooling trough two, and the sectional area of cooling trough one is less than the sectional area of cooling trough two,
Intake chamber is located at water tank lower part, is connected to cooling trough two, at least one water-supplying chamber is connected to cooling trough one, at least one goes out
Water chamber is connected to the upper end of the lower end of the cooling trough one and cooling trough two, the water-supplying chamber one being connected to cooling trough one with
Water tank respective channel one is connected to, the water-supplying chamber two being connected to the upper end of the lower end of the cooling trough one and cooling trough two and water
Case respective channel two is connected to, and is arranged valve in the water tank respective channel one or water tank respective channel two, the intake chamber and is gone out
The channel of water chamber at most has one to be not provided with flowmeter, including fast changeable water tank back increased between water tank and copper sheet
Plate, intake chamber and water-supplying chamber are transferred to the water tank backboard, and the cooling water inflow that outlet pipe one flows out is the 40% of total cooling water inflow
~70%.
2. a kind of crystallizer as described in claim 1, which is characterized in that the cooling water inflow that outlet pipe one flows out is total cooling water
The 50%~60% of amount.
3. a kind of crystallizer as described in claim 1, which is characterized in that the sectional area by adjusting cooling trough one adjusts cold
But the cooling water inflow of sink one.
4. a kind of crystallizer as described in claim 1, which is characterized in that the size by adjusting the valve opening degree controls
The cooling water inflow of cooling trough one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710142556.8A CN106825465B (en) | 2017-03-10 | 2017-03-10 | A kind of crystallizer preventing slab defects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710142556.8A CN106825465B (en) | 2017-03-10 | 2017-03-10 | A kind of crystallizer preventing slab defects |
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| CN106825465A CN106825465A (en) | 2017-06-13 |
| CN106825465B true CN106825465B (en) | 2019-02-22 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4129172A (en) * | 1976-10-27 | 1978-12-12 | Lukens Steel Company | Mold for electroslag remelting process |
| CN2936495Y (en) * | 2006-07-15 | 2007-08-22 | 西峡龙成特种材料有限公司 | Heat top crystallizer form work of meniscus area narrow shallow water channel |
| CN2936496Y (en) * | 2006-07-15 | 2007-08-22 | 西峡龙成特种材料有限公司 | Heat top crystallizer formwork equiped with low heat conductive alloy layer in meniscus area water channel |
| CN202155493U (en) * | 2011-07-08 | 2012-03-07 | 河北钢铁股份有限公司唐山分公司 | Cooling structure for wide-surface copper plate of crystallizer of continuous slab casting machine |
| CN206622583U (en) * | 2017-03-10 | 2017-11-10 | 西峡龙成特种材料有限公司 | A kind of crystallizer for preventing slab defects |
-
2017
- 2017-03-10 CN CN201710142556.8A patent/CN106825465B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4129172A (en) * | 1976-10-27 | 1978-12-12 | Lukens Steel Company | Mold for electroslag remelting process |
| CN2936495Y (en) * | 2006-07-15 | 2007-08-22 | 西峡龙成特种材料有限公司 | Heat top crystallizer form work of meniscus area narrow shallow water channel |
| CN2936496Y (en) * | 2006-07-15 | 2007-08-22 | 西峡龙成特种材料有限公司 | Heat top crystallizer formwork equiped with low heat conductive alloy layer in meniscus area water channel |
| CN202155493U (en) * | 2011-07-08 | 2012-03-07 | 河北钢铁股份有限公司唐山分公司 | Cooling structure for wide-surface copper plate of crystallizer of continuous slab casting machine |
| CN206622583U (en) * | 2017-03-10 | 2017-11-10 | 西峡龙成特种材料有限公司 | A kind of crystallizer for preventing slab defects |
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| CN106825465A (en) | 2017-06-13 |
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