CN1031496A - In a kind of method that stops cast work in the steel casting equipment - Google Patents
In a kind of method that stops cast work in the steel casting equipment Download PDFInfo
- Publication number
- CN1031496A CN1031496A CN 87100986 CN87100986A CN1031496A CN 1031496 A CN1031496 A CN 1031496A CN 87100986 CN87100986 CN 87100986 CN 87100986 A CN87100986 A CN 87100986A CN 1031496 A CN1031496 A CN 1031496A
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- Prior art keywords
- crystallizer
- band steel
- segment
- parallel
- described method
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 51
- 239000010959 steel Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000005266 casting Methods 0.000 title claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 28
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 230000005494 condensation Effects 0.000 claims abstract description 8
- 238000009833 condensation Methods 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 230000003247 decreasing effect Effects 0.000 claims abstract description 5
- 230000008676 import Effects 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims abstract description 3
- 238000005259 measurement Methods 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000002893 slag Substances 0.000 description 3
- 208000005189 Embolism Diseases 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000012010 growth Effects 0.000 description 2
- 101100298225 Caenorhabditis elegans pot-2 gene Proteins 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
- G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sampling And Sample Adjustment (AREA)
- Continuous Casting (AREA)
- Electromagnets (AREA)
Abstract
Be with the method that stops cast work in the steel casting equipment, this equipment has the narrow sidewall and the broad side walls crystallizer of a band cooling, determines at broad side walls on the parallel-segment of shape, and for gate spool is installed, crystallizer has an injection region of upwards expanding.For the band steel of avoiding pouring into a mould is detained or outer casing rupture, make the band steel draw speed V
BWith poring rate V
EBe reduced to V
BM, V
EMValue, this moment, the molten metal terminal remained on below the parallel-segment of determining shape, and after stopping to import molten steel and metal bath surface and shifting out the injection region, the band steel speed of drawing is decreased to V
Br, this moment, metal bath surface formed the condensation shell of a sealing within the parallel-segment of determining shape.
Description
The present invention relates to the method that stops cast work in the steel casting equipment a kind of, this equipment has the narrow sidewall of a band cooling and the crystallizer of broad side walls, determine at broad side walls on the parallel-segment of shape that for gate spool is installed, crystallizer has a upwards injection region of expansion.
By DE-PS 887990 as can be known, when the continuous pouring slab, be provided with the injection region of expansion in the crystallizer, the determining to consider of pouring condition can extend in the parallel-segment mobile molten metal always.
In existing continuous casting equipment, reduced cast volume and dummy ingot volume greatly in order to stop cast work, so that slag can be removed from metal bath surface, and there is time enough to make casting blank end surface be frozen into shell.In this type, the cast work of band steel casting crystallizer with expansion injection region can not stop because dummy ingot speed significantly reduce can cause thoroughly solidifying in the injection region of expansion or becoming shell, and steel band is clamped.Can affirm, when the molten metal that flows extends to the parallel-segment of crystallizer, even the unallowed higher dummy ingot resistance that breaks that causes can occur always.
Because narrow crystallizer aperture accessibility is poor, can not remove adiabatic slag, this has also further increased the difficulty that stops cast work in band steel casting equipment, has therefore polluted roller (guide) apron when the band steel when crystallizer comes out, and has caused that when spraying cooling water scintillation explodes.
Task of the present invention is the method that proposes a kind of termination cast work of the reliable operation that is applicable to band steel casting equipment, and the band steel of avoiding pouring into a mould is trapped in the running channel or breaks, and is avoiding when crystallizer export in the pollution of being with steel end face scintillation and slag.
The measure of finishing above-mentioned task by the present invention is, the band steel draw speed and poring rate is decreased to V
Bm, V
Em *Value, complete solidification zone just remains under the parallel-segment of determining shape when this value, and after stopping to import molten steel and after metal bath surface shifts out running channel, is with the steel speed of drawing to be decreased to V
BrMetal bath surface has formed the condensation shell of a sealing within the parallel-segment of determining shape when this value.
This new method can be regulated the process that stops cast and be made it automation, therefore can alleviate operator's burden, avoids producing operating mistake, and improves total functional reliability.The method is especially considered the following fact, has promptly formed the inhomogeneous district of a crystal growth in molten metal from the condensation shell of strand.At this moment by different crystal growths, can in running channel, just on opposed wall, be barricaded as bridge, the output that it suppresses to reduce the thickness of band steel and hinders the band steel.The solution that is proposed has avoided the band steel to be fixed in the running channel and in the scintillation blast when crystallizer comes out of band steel.
When pouring into a mould the band steel of 50 millimeters thick, minimum dummy ingot speed V
BmIt is 1.5 meters/minute.
The height of metal bath surface is preferably determined by the temperature of measuring in the crystallizer wall.
The height of molten metal terminal can be determined by the power that just acts on the wide side surface of band steel in measurement under the crystallizer continuously.The height of molten metal terminal also can be determined by just carrying out ultrasonic measurement continuously along the tape thickness direction below crystallizer.
By in the regulating system of the inventive method, determine that the measurement data of mould inner metal liquid face and molten metal terminal location is imported in the process computer continuously, and the comparison of process rated value and actual value, adjust the band steel and draw speed V
BWith corresponding poring rate V
E
Implement in the band steel casting equipment of the method, a plurality of temperature sensors are arranged at the parallel zone of injection region and crystallizer broad side walls.In order to determine the molten metal terminal location, the strand guiding roller element that is right after in the crystallizer back is equipped with the power sensor.
Now the invention will be further described by means of accompanying drawing.Wherein:
Fig. 1 band steel casting equipment and crystallizer cross sectional representation,
The profilograph of Fig. 2 crystallizer,
Fig. 3 stops the four-stage of casting process, and
Fig. 4 represents poring rate respectively and is with steel to draw the figure line of speed.
In the band steel casting equipment shown in Fig. 1 and 2, adjust by the embolism 3 that can regulate its height from the molten steel of ladle pot 2, and by gate spool 4 inflow crystallizers 5, crystallizer is made of two opposed broad side walls 6 and two narrow sidewalls 7, and broad side walls 6 and narrow sidewall 7 are equipped with cooling duct 8.The vibrating device of crystallizer is represented with arrow 9.Broad side walls 6 forms the upwards injection region 11 that is used to install gate spool 4 of expansion on the top of the parallel-segment 10 of determining shape.
When beginning to pour into a mould, the molten steel 1 that at first flows into crystallizer 5 is connected with dummy ingot 12, and dummy ingot is fixed on the dummy bar 13.Metal bath surface 14 rises from side tap hole 15 outflows of gate spool 4 by molten steel.For the height of determining that metal bath surface 14 is instantaneous, in broad side walls, establish thermometer 16.When beginning to pour into a mould, dummy bar 13 is arranged in the strand guiding roller of being made up of roller 17 of crystallizer and then.Be provided with one in the end of strand guiding roller and at first be used to export dummy bar 13, then draw the transmission device 18 of institute's Cast Strip steel.A measurement mechanism 19 is just arranged below crystallizer 5, and it is used for measuring the power of molten steel hydrostatic pressure on strand condensation shell 22.Adopted power sensor 19 for this reason.The measurement data input process computer 20 of thermometer 16 and power sensor 19, through the comparison of rated value and actual value, process computer is determined the required band steel of transmission device 18 is drawn speed V
BAnd for the corresponding poring rate V of embolism 3 adjusters 21
E
As seen from Figure 3, the condensation shell 22 that the molten steel that flows is frozen into the band steel at the broad side walls 6 and narrow sidewall 7 places of crystallizer 5 coolings, its thickness is more down thick more.The band steel condensation shell 22 that the position, 11 place, injection region of expansion forms on broad side walls 6, close to each other along with moving towards the parallel-segment 10 of determining shape.
The procedural representation that stops the work of pouring into a mould by the present invention is in each stage of Fig. 3 A-C, C-D, E-F and F-G and be illustrated in the poring rate V of Fig. 4
EDraw speed V with the band steel
BFigure line in.
When normal cast work with V
EAnd V
B, that is be cast volume and dummy ingot volume from same meaning, be aligned to a higher level.
In order to stop cast work, from A to B, poring rate V
EWith dummy ingot speed V
BDrop to V equably
EmAnd V
Bm, at this moment molten metal terminal 23 is beyond parallel-segment 10.When time C, cut off the input of molten steel, so metal bath surface 14 descends.In case metal bath surface 14 leaves running channel (D), dummy ingot speed drops to V
BrValue, at this moment metal bath surface has formed the condensation shell 24(E-F of a upper end closed within parallel-segment 10).After the band steel 25 of cast leaves crystallizer 5, for quick output strip 25, the speed of the drawing V of band steel
BAgain improve (G).
Claims (8)
1, in a kind of method that stops cast work in the steel casting equipment, this equipment has the narrow sidewall of a band cooling and the crystallizer of broad side walls, determine at broad side walls on the parallel-segment of shape, for gate spool is installed, crystallizer has a upwards injection region of expansion, it is characterized by: the speed of the drawing VB and the poring rate VE of band steel are decreased to VBm, the VEm value, molten metal terminal (23) just remains under the parallel-segment (10) of determining shape when this value, and after stopping to import molten steel and metal bath surface (14) and shifting out injection region (11), the band steel speed of drawing is decreased to EBr, and metal bath surface (14) has formed the condensation shell (24) of a sealing within the parallel-segment (10) of determining shape when this value.
2, according to the described method of claim 1, it is characterized by: when pouring into a mould the band steel of 50 millimeters thick, minimum dummy ingot speed V
BmIt is 1.5 meters/minute.
3, according to the described method of claim 1, it is characterized by: the height of metal bath surface (14) is determined by the temperature of measuring in the crystallizer wall (6).
4, according to the described method of claim 1, it is characterized by: the height of molten metal terminal (23) is determined by the power that just acts on the wide side surface of band steel (25) at planar survey under the crystallizer (5) continuously.
5, according to the described method of claim 1, it is characterized by: the height of molten metal terminal (23) is determined by just carrying out ultrasonic measurement along the tape thickness direction below crystallizer (5) continuously.
6, according to the regulating system of the one or more described method of claim 1 to 5, it is characterized by: the measurement data of determining metal bath surface and molten metal terminal location is imported in the process computer (20) continuously, and the comparison of process rated value and actual value, adjust the band steel and draw speed VB and corresponding poring rate V
E
7, enforcement is characterized by: in the parallel-segment (10) of running channel (11) and broad side walls (6) a plurality of temperature sensors (16) are housed according to the band steel casting equipment of the one or more described method of claim 1 to 5.
8, enforcement is according to the band steel casting equipment of the one or more described method of claim 1 to 5, and it is characterized by: the strand guiding roller element that is right after in crystallizer (5) back is equipped with power sensor (19).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3606389.8 | 1986-02-07 | ||
| DE19863606389 DE3606389A1 (en) | 1986-02-27 | 1986-02-27 | Test device for detecting materials which damage contacts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1031496A true CN1031496A (en) | 1989-03-08 |
Family
ID=6295087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87100986 Pending CN1031496A (en) | 1986-02-07 | 1987-02-27 | In a kind of method that stops cast work in the steel casting equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1031496A (en) |
| DE (1) | DE3606389A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105983675A (en) * | 2015-02-28 | 2016-10-05 | 宝山钢铁股份有限公司 | Multifunctional automatic final pouring system of continuous casting machine and process control method |
| CN106794513A (en) * | 2014-10-15 | 2017-05-31 | 新日铁住金株式会社 | Liquation face level detection device, method and program in continuously casting mold |
-
1986
- 1986-02-27 DE DE19863606389 patent/DE3606389A1/en active Granted
-
1987
- 1987-02-27 CN CN 87100986 patent/CN1031496A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106794513A (en) * | 2014-10-15 | 2017-05-31 | 新日铁住金株式会社 | Liquation face level detection device, method and program in continuously casting mold |
| CN106794513B (en) * | 2014-10-15 | 2018-11-27 | 新日铁住金株式会社 | Liquation face level detection device in continuously casting mold, method |
| CN105983675A (en) * | 2015-02-28 | 2016-10-05 | 宝山钢铁股份有限公司 | Multifunctional automatic final pouring system of continuous casting machine and process control method |
| CN105983675B (en) * | 2015-02-28 | 2018-06-26 | 宝山钢铁股份有限公司 | A kind of conticaster multi-functional automatic end pours system and process control method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3606389C2 (en) | 1993-03-04 |
| DE3606389A1 (en) | 1987-09-03 |
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| RJ01 | Rejection of invention patent application after publication |