CN1331617A - Method for detecting and controlling level of liquid metal in ingot mold - Google Patents
Method for detecting and controlling level of liquid metal in ingot mold Download PDFInfo
- Publication number
- CN1331617A CN1331617A CN99814873A CN99814873A CN1331617A CN 1331617 A CN1331617 A CN 1331617A CN 99814873 A CN99814873 A CN 99814873A CN 99814873 A CN99814873 A CN 99814873A CN 1331617 A CN1331617 A CN 1331617A
- Authority
- CN
- China
- Prior art keywords
- crystallizer
- actuator
- computer
- gauge head
- level
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 229910001338 liquidmetal Inorganic materials 0.000 title claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 238000009749 continuous casting Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 16
- 238000005266 casting Methods 0.000 claims description 13
- 239000000843 powder Substances 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 8
- 206010013647 Drowning Diseases 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 230000004941 influx Effects 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 238000007654 immersion Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 5
- 230000002285 radioactive effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
- G01F23/268—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors mounting arrangements of probes
-
- 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
- B22D11/165—Controlling or regulating processes or operations for the supply of casting powder
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
- G01F23/245—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid with a probe moved by an auxiliary power, e.g. meter, to follow automatically the level
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Continuous Casting (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention relates to a method and a device for detecting and controlling the level of molten metal located in an ingot mold, especially for a continuous casting installation for steel. Said molten metal can be delivered from a feed vessel comprising a closeable bottom opening to the ingot mold via an immersion tube. The level of the liquid metal is detected and controlled using a measuring element which can be inserted into the free space of the ingot mold in a vertically displaceable manner. The level measuring element (42) is connected via a first signal line (31) to a computer (41) which is connected via a first control line (51) to a first actuator (61) on which an extension arm (71) is fastened. The level measuring element (42) is attached to the top end of said extension arm. A position sensor (43) is provided on the extension arm (71) and is connected via a second signal line (32) to the computer (41) which is connected via a second control line (52) to a second actuator (62) that is linked to an obturator (81) for closing the bottom opening (12) of the feed vessel (11).
Description
The present invention relates to a kind of especially method of the interior controlling level of liquid metal of continuous casting equipment crystallizer of steel that detects and adjust, a gauge head that is located at the metal bath top is arranged, measure in the distance between it and the liquid surface by its, and the invention still further relates to the corresponding apparatus that is used for the method.
Horizontal survey for liquid metal liquid level in the especially thin slab ingot continuous cast crystallizer in the crystallizer has proposed more and more higher requirement.When drawing ingot speed to be 4 to 6m/min, in this device, only allow minimum sensor and fast as far as possible conversion speed is arranged.
By the known a kind of method of EP0150670 and a kind of equipment, wherein be used as the tolerance of measurement coil from the metal bath distance by measuring the eddy current of coil at the metal bath internal induction, here will on the metal bath surface, compare by the value and a rated value of eddy current, and adjust the metal bath input quantity according to the difference of rated value and actual value.In this known device, to measure coil and be fixed on the guide pipe, it can be designed to alterable height.Concludeed a contract or treaty that 20mm is as the optimum distance of gauge head from metal bath.If need to reduce metal liquid level later on, then measuring coil can decrease by the decline guide pipe.The shortcoming of this known device is non-linear measurement.If metal liquid level changes between casting cycle, just can in measuring coil, cause impedance fluctuations, in measuring object because the eddy current of responding to reduces as ohmic loss.The value of this impedance fluctuations arrives adjusting device by electronic unit, triggers a device by adjusting device, is used for determining to pass through the metal bath flow of outlet.
Known in addition radioactive measurement mechanism, wherein Co for example
60As radioactive source transmission crystallizer.In opposite side measuring radiation intensity, it depends on the melt controlling level in crystallizer in this case.
Except since aspect the Radioactive Source Decay rate statistical fluctuation cause the bigger average error rate that outstanding shortcoming is the more and more stricter legal provisions when adopting radioactive substance of being worth mentioning.
The objective of the invention is to avoid above-mentioned shortcoming and create the method and apparatus that is used to detect and adjust controlling level of liquid metal in the crystallizer, it is convenient to safeguard and accurately detects controlling level under the situation of the measurement length that makes full use of all requirements, and adjusts rapidly and reliably when liquid level changes.
Should be able to measure casting powder thickness in addition.
The present invention reaches this purpose by the described feature of characteristic of claim to a method 1 and equipment claim 4.
Detect the gauge head stretch in the crystallizer and the distance between the liquid surface by the present invention, and by an actuator that is located at the crystallizer outside it is remained constant, actuator is connected with gauge head by bindiny mechanism, changes its upright position.Detect the current location of the bindiny mechanism between actuator and gauge head simultaneously and import computer, the control data of machine processing sends second actuator that is connected with switch to as calculated, and switch is used for influencing the amount of the liquid metal that flows into crystallizer.
Because gauge head does not change its distance from liquid surface, thus the impedance fluctuations of measuring coil can not produced yet, thus avoided the measure error that causes thus.
Be convenient to detect in measuring technique from the bindiny mechanism that crystallizer is drawn, so the influence of liquid metal influx in can under situation, realizing crystallizer by second actuator that is connected with switch with high precision and extra high speed.
Keep equidistant because detect the gauge head of metal bath liquid level distance, thus simply mode detect simultaneously and equally adjustment be in the lip-deep casting powder of metal liquid height.
By favourable design recommendation, horizontal or vertical or rotatablely move and be used to detect the gauge head actuator that the upright position changes in crystallizer.Here, the bindiny mechanism between actuator and the measuring transducer can be a bar, or also can be chain or steel wire rope.All these members all adapt to extremely harsh environment in the crystallizer zone that continuous casting equipment is fixed.
By another kind of design recommendation, and be used to detect the same position of measuring cell that distance between gauge head and metal surface is designed to sensing element, installs one and detects the bed thickness sensor of casting powder thickness, here this sensor is a ultrasonic unit.The bed thickness sensor is connected with computer by the 3rd holding wire, and computer is connected with the 3rd actuator through the 3rd control line, and the latter links to each other with the switch of adjusting the supply of casting powder.
Accompanying drawing is represented of the present invention giving an example.Wherein:
Fig. 1 detects and adjusts the equipment schematic diagram of controlling level in the crystallizer;
The revolving actuator that Fig. 2 is connected with gauge head by revoliving arm;
But first actuator of the horizontal movement that Fig. 3 is connected with gauge head by steel wire rope; And
Fig. 4 detects the measurement mechanism of controlling level and casting powder thickness.
Fig. 1 represents a gravitation tank 11, and melt S is in wherein.Gravitation tank 11 has a bottom outlet 12, and bottom orifice is established a cast drowning pipe.
This cast drowning pipe 13 inserts in the fixing crystallizer 21.Melt S is in crystallizer, and its liquid surface covers with casting powder G.
Stretch into pole 74 in crystallizer, a bin level indicator 42 is fixed on the pole top.Pole 74 constitutes a complete carriage 71 with cantilever 73 and column 72.Column 72 is designed to the piston of first actuator 64.Column 72 is designed to vertically to move and can rotates simultaneously.It is necessary rotatablely moving, so that make bin level indicator 42 leave or move towards the crystallizer direction from crystallizer 21.
On carriage 71, establish position sensor 43, it is connected with computer 41 by secondary signal line 32, computer is connected in order to control with second actuator 62, and the latter controls second lifting device 68, and it is connected with a switch 81 that here is designed to stop up by carriage 69.
Fig. 2 represents first actuator 61, and it is connected with pole 74 by revoliving arm 75 and by hinge 76.Establish a bin level indicator 42 on the top of pole 74, it can be adjusted to the melt S liquid surface that is in the crystallizer 21 equidistant.
Fig. 3 represents first actuator 61 as draw-gear 67, and it is contained on the mobile device 77, and a roller 78 is arranged on the mobile device top.Steel wire rope 79 is by roller 78 guidings, and its end is connected with draw-gear 67, at the fixing bin level indicator 42 of its other end.The bin level indicator 42 that is fixed on the steel wire rope 79 stretches in the crystallizer 21.Carry on simply by draw-gear 67, bin level indicator 42 can be transported in the zone of crystallizer 21 tops, be transported to static or repair location by mobile device 77 travelling backwards then.
Fig. 4 represents bin level indicator 42 and all as at those members illustrated in fig. 1.Unique here difference is to adopt guiding valve 83 to substitute the obstruction 82 that is used to influence metal bath S influx.
As replenishing of bin level indicator 42 shown in Figure 1, in Fig. 4, additionally establish a bed thickness sensor 44.The bed thickness sensor 44 that is used to detect the casting powder G bed thickness that is in liquid surface is connected with computer 41 by the 3rd holding wire 33, is connected with the 3rd actuator 63 through the 3rd control line 53 in order to control computer.The 3rd actuator 63 links to each other with the guiding valve 84 that is used to cast powder G, and the casting powder is in the storage tank and can infeeds crystallizer.
Claims (11)
1. detect and adjust the method for controlling level of liquid metal in the continuous casting equipment crystallizer of steel especially, a gauge head that is located at the metal bath top is arranged, measure distance between it and the liquid surface, it is characterized in that the following step by its:
A) before casting beginning gauge head by bindiny mechanism from one be located at the crystallizer outside independently fixed support take in the free space of crystallizer;
B), detect any change of distance that can be given between metal liquid surface and the gauge head along with crystallizer begins to inject metal bath;
C) measured value input is positioned at the computer of external security position;
D) computer sends treated control data to be fixed on the support actuator thus, and it changes the upright position of gauge head in this way, is desired distance along with the possible variation of melt level reaches from liquid surface again promptly;
E) current location of the bindiny mechanism between the gauge head and first actuator is imported computer; And
F) by computer with treated control data send to one with influence crystallizer in second actuator that is connected of the switch of liquid metal influx.
2. in accordance with the method for claim 1, it is characterized by: in order to change the upright position of gauge head in crystallizer, first actuator that is connected with gauge head is horizontal or vertical or rotatablely move.
3. in accordance with the method for claim 1, it is characterized by: except that the controlling level of liquid metal, adjust the height that is in the lip-deep casting powder of metal liquid.
4. detect and adjust the equipment that is in the metal bath controlling level in the steel continuous casting equipment crystallizer especially, metal bath can have the batch can of giving of closable bottom outlet to import crystallizer through drowning pipe from one, equipment has a measuring cell, it can vertically be inserted in the free space of crystallizer movably, it is characterized by: level gauging element (42) is connected with computer (41) by first holding wire (31), computer is connected with first actuator (61) through first control line (51), fix a carriage (71) on actuator, level gauging element (42) is installed on the top of carriage; On carriage (71), establish a position sensor (43), it is connected with computer (41) by secondary signal line (32), computer then is connected with second actuator (62) through second control line (52), and the latter is connected with the switch (81) that is used to close to batch can (11) bottom outlet (12).
5. according to the described equipment of claim 4, it is characterized by: carriage is by the column (72) that is connected with lifting device (64), be arranged in parallel and the fixing pole (74) of level gauging element (42) and connect column (72) and the cantilever (73) of pole (74) is formed on its top with it.
6. according to the described equipment of claim 4, it is characterized by: carriage (71) is made of a revoliving arm (75) that is connected with slewing equipment (45), there is a hinge (76) on the revoliving arm top, and hinge links to each other with pole (74), the fixing level gauging element (42) on the pole top.
7. according to claim 5 or 6 described equipment, it is characterized by: establish a whirligig (66), on this whirligig, connect lifting device (64) or slewing equipment (65), be used for level gauging element (42) is turned back in the free space of crystallizer (21) and with the free space of level gauging element from crystallizer and produce.
8. according to the described equipment of claim 4, it is characterized by: carriage (71) is rigidly connected with mobile device (77) and there is a roller (78) on the top, steel wire rope or chain (79) can be guided by roller, at one end fixedly level gauging element (42) and other end fixed traction device (67).
9. according to the described equipment of one of claim 4 to 8, it is characterized by: upward fixedly comprise a level gauging element (42) that is used to detect the sensing element of distance between gauge head and metal bath surface at carriage (71), and fix a bed thickness sensor (44) that is used for detecting casting powder (G) bed thickness simultaneously.
10. according to the described equipment of claim 9, it is characterized by: bed thickness sensor (44) is a ultrasonic unit, can detect distance between it and casting material surface by it.
11. according to claim 10 or 9 described equipment, it is characterized by: bed thickness sensor (44) is connected with computer (41) through the 3rd holding wire (33), computer is connected with the 3rd actuator (63) by the 3rd control line (53), and the latter casts the switch (84) that powder supplies and links to each other with being used to adjust.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19860752 | 1998-12-23 | ||
| DE19860752.0 | 1998-12-23 | ||
| DE19918835A DE19918835A1 (en) | 1998-12-23 | 1999-04-20 | Method for detecting and regulating the level of the liquid metal in a mold |
| DE19918835.1 | 1999-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1331617A true CN1331617A (en) | 2002-01-16 |
Family
ID=26051131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99814873A Pending CN1331617A (en) | 1998-12-23 | 1999-12-22 | Method for detecting and controlling level of liquid metal in ingot mold |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1152850A1 (en) |
| JP (1) | JP2002533221A (en) |
| CN (1) | CN1331617A (en) |
| AU (1) | AU2429300A (en) |
| BR (1) | BR9916554A (en) |
| CA (1) | CA2355275A1 (en) |
| WO (1) | WO2000038858A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100569416C (en) * | 2008-03-18 | 2009-12-16 | 中南大学 | A kind of constant fluid level control device of fused mass box for casting |
| CN103447487A (en) * | 2013-07-29 | 2013-12-18 | 山西太钢不锈钢股份有限公司 | Casting method |
| CN103702784A (en) * | 2011-06-07 | 2014-04-02 | Sms西马格股份公司 | Method for regulating height of casting level in mold of continuous casting installation |
| CN104439144A (en) * | 2014-12-19 | 2015-03-25 | 山东钢铁股份有限公司 | Steel billet solidification detection system and method based on ultrasonic waves |
| CN104568049A (en) * | 2015-02-04 | 2015-04-29 | 济南大学 | Rotary non-contact water level gauge upright pole |
| CN104722723A (en) * | 2015-04-09 | 2015-06-24 | 田陆 | Fixing device for sensor for molten molded steel liquid level detection |
| CN109225590A (en) * | 2018-10-17 | 2019-01-18 | 中冶北方（大连）工程技术有限公司 | A kind of pelletizing high-pressure roller mill chute material-level detecting device and method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10324247A1 (en) * | 2003-05-28 | 2004-12-16 | Bayerische Motoren Werke Ag | Metal casting plant and process |
| KR101382785B1 (en) * | 2007-12-27 | 2014-04-08 | 주식회사 포스코 | Method for controlling the solidification structure of steel using the input of ultrasonic |
| CN102177122B (en) | 2008-10-14 | 2013-12-11 | 因温斯特技术公司 | Process for making 2-secondary-alkyl-4,5-di-(normal-alkyl)phenols |
| AT517889B1 (en) * | 2015-10-28 | 2017-09-15 | Primetals Technologies Austria GmbH | Detecting a level of pouring in a mold |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5376926A (en) * | 1976-12-21 | 1978-07-07 | Nippon Kokan Kk | Molten metal level monitor controller of continuous casting machine that use eddy flow system range finder for measurement of molten metal level |
| US4470446A (en) * | 1980-07-09 | 1984-09-11 | Kabushiki Kaisha Kobe Seiko Sho | Method and apparatus for detecting molten metal surface level in a mold |
| EP0067668B1 (en) * | 1981-06-11 | 1987-11-11 | Nippon Steel Corporation | Apparatus for measuring a metal surface position |
| JPS62270263A (en) * | 1986-05-20 | 1987-11-24 | Mitsubishi Heavy Ind Ltd | Control device for powder charging quantity in continuous caster |
-
1999
- 1999-12-22 WO PCT/DE1999/004114 patent/WO2000038858A1/en not_active Application Discontinuation
- 1999-12-22 JP JP2000590798A patent/JP2002533221A/en active Pending
- 1999-12-22 AU AU24293/00A patent/AU2429300A/en not_active Abandoned
- 1999-12-22 CN CN99814873A patent/CN1331617A/en active Pending
- 1999-12-22 CA CA002355275A patent/CA2355275A1/en not_active Abandoned
- 1999-12-22 BR BR9916554-6A patent/BR9916554A/en not_active Application Discontinuation
- 1999-12-22 EP EP99967918A patent/EP1152850A1/en not_active Withdrawn
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100569416C (en) * | 2008-03-18 | 2009-12-16 | 中南大学 | A kind of constant fluid level control device of fused mass box for casting |
| CN103702784A (en) * | 2011-06-07 | 2014-04-02 | Sms西马格股份公司 | Method for regulating height of casting level in mold of continuous casting installation |
| CN103702784B (en) * | 2011-06-07 | 2015-11-25 | Sms集团有限责任公司 | For regulating the method for the height of the cast liquid level in the mold of continuous casting installation for casting |
| CN103447487A (en) * | 2013-07-29 | 2013-12-18 | 山西太钢不锈钢股份有限公司 | Casting method |
| CN104439144A (en) * | 2014-12-19 | 2015-03-25 | 山东钢铁股份有限公司 | Steel billet solidification detection system and method based on ultrasonic waves |
| CN104568049A (en) * | 2015-02-04 | 2015-04-29 | 济南大学 | Rotary non-contact water level gauge upright pole |
| CN104568049B (en) * | 2015-02-04 | 2018-04-06 | 济南大学 | A kind of rotatable contactless water-level gauge vertical rod |
| CN104722723A (en) * | 2015-04-09 | 2015-06-24 | 田陆 | Fixing device for sensor for molten molded steel liquid level detection |
| CN109225590A (en) * | 2018-10-17 | 2019-01-18 | 中冶北方（大连）工程技术有限公司 | A kind of pelletizing high-pressure roller mill chute material-level detecting device and method |
| CN109225590B (en) * | 2018-10-17 | 2023-10-20 | 中冶北方（大连）工程技术有限公司 | Device and method for detecting chute material level of pellet high-pressure roller mill |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1152850A1 (en) | 2001-11-14 |
| JP2002533221A (en) | 2002-10-08 |
| AU2429300A (en) | 2000-07-31 |
| CA2355275A1 (en) | 2000-07-06 |
| BR9916554A (en) | 2001-10-09 |
| WO2000038858A1 (en) | 2000-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1331617A (en) | Method for detecting and controlling level of liquid metal in ingot mold | |
| CN104707984A (en) | Automatic control system for pouring box plug rod for vacuum casting | |
| US4084631A (en) | Method and device for controlling a casting machine | |
| CN204524246U (en) | A kind of automaton of vacuum casting stopper rod of tundish | |
| KR20040024310A (en) | Apparatus for inspecting of hydrauric cylinder | |
| EP0429575A1 (en) | Process and equipment to determine disturbance variables when pouring molten metal from a container | |
| CN1143550A (en) | Method and apparatus for pouring molten material | |
| US4483708A (en) | Method and apparatus for regulating the melting rate of an electrode during electroslag remelting | |
| SK285609B6 (en) | Method and device for casting metal close to final dimensions | |
| EP1486271B1 (en) | A method and a device for detecting slag | |
| CN105364030B (en) | Steel ladle clearance measurement apparatus | |
| JP3604661B2 (en) | Method and device for judging completion of molten steel injection | |
| CN1283390C (en) | Method and device for weighing contents of metallurgical vessel, particularly contents fo dsitributing launder in steel continuous casting installations | |
| US20240131577A1 (en) | Sensor controlled launder flow | |
| JP4324077B2 (en) | Sliding nozzle opening measuring method and apparatus, and molten steel injection method using this method | |
| MXPA01004943A (en) | Method for detecting and controlling the level of liquid metal in an ingot mold | |
| EP1486272B1 (en) | A method and a device for detecting slag | |
| CN205096498U (en) | Ladle headroom measuring device | |
| JP3039254B2 (en) | Liquid surface position control device in continuous casting equipment | |
| JPH0459160A (en) | Method for controlling molten metal surface level in mold in continuous casting | |
| CN211374412U (en) | Dense medium suspension density on-line measuring device | |
| CN215525416U (en) | Scrap steel impurity detection device | |
| DE19918835A1 (en) | Method for detecting and regulating the level of the liquid metal in a mold | |
| CN212598740U (en) | Novel vortex detection bracket | |
| KR100306564B1 (en) | Apparatus and method for controlling mould level in varying slab bulging |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |