CN106595872A - Method for preventing ladle slag line leakage by infrared temperature measuring technology - Google Patents
Method for preventing ladle slag line leakage by infrared temperature measuring technology Download PDFInfo
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- CN106595872A CN106595872A CN201611193199.XA CN201611193199A CN106595872A CN 106595872 A CN106595872 A CN 106595872A CN 201611193199 A CN201611193199 A CN 201611193199A CN 106595872 A CN106595872 A CN 106595872A
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- Prior art keywords
- temperature
- ladle
- infrared
- slag line
- temperature measurement
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- 239000002893 slag Substances 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005516 engineering process Methods 0.000 title claims abstract description 13
- 239000000523 sample Substances 0.000 claims abstract description 38
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 37
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 239000011449 brick Substances 0.000 description 8
- 230000002265 prevention Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000009847 ladle furnace Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 206010020843 Hyperthermia Diseases 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004861 thermometry Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0037—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the heat emitted by liquids
- G01J5/004—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the heat emitted by liquids by molten metals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a method for preventing ladle slag line leakage by the infrared temperature measuring technology. The method comprises a step of taking an outer side part of a ladle slag line slot which is closest to an electrode and is close to an air hole as a temperature measurement point, and marking the temperature measurement point, a step of installing multiple infrared continuous temperature measurement probes outside a ladle, and allowing the infrared continuous temperature measurement probes to point at the temperature measurement point, a step of connecting the infrared continuous temperature measurement probes to a computer in a control room, and allowing the computer to collect temperature of the temperature measurement point through the infrared continuous temperature measurement probes, and displaying the collected temperature data through a computer screen, a step of setting a high temperature alarm temperature in the computer, a step of stopping heating immediately when the temperature collected by the computer through the infrared continuous temperature measurement probes reaches or exceeds the high temperature alarm temperature, and a step of replacing the ladle or returning operation, and avoiding the leakage of a ladle slag line. According to the method, the ladle slag line part can be monitored in real time, thus a production accident and loss caused by ladle slag line leakage are avoided, and the safety of production is improved.
Description
Technical field
The present invention relates to technical field of ferrous metallurgy, and in particular to a kind of infrared temperature-test technology prevention ladle slag line leakage
Method.
Background technology
In process of production, its slag lining is subject to the hyperthermia radiation effect of ladle furnace electric arc heated and some steel grades to ladle
The chemical erosion of low basicity slag.In the case of the change less of every stove molten steel tap, the high-temperature slag in ladle is to slag line portion
Especially severe is corroded in position (about two ring bricks height), forms slag chute very deep together.In actual production, by experienced workman according to
The number of times of ladle production and application, the time of staying and visually observe when repairing ladle, estimate its residual thickness.Jing often goes out in production
Existing slag line it is residual it is thick estimate mistake, thickness is offline or slag line is ultra-thin occurs slag during ladle furnace refining to cause slag line to be above standard
Line leakage.
The residual thickness of the slag chute position brick of 3 ladle slag line leakages in recent years is analyzed, as shown by data is in distance
The residual thickness in position of the nearest and close air-vent side of electrode is most thin, and 3 leakages are in this place, and all during heated by electrodes
Occur.As long as residue pile is corroded and worn by slag in heating process, slag-resistant does not corrode permanent ladle layer high alumina castable, at 3 points
Can be washed off by high-temperature slag in clock, ladle shell steel plate is etched immediately under the erosion of high-temperature slag and wears, and causes ladle
Slag line leakage.If found not in time, the slag and molten steel for wearing out pierces through ladle shell steel plate, causes whole Baogang's water to flow out
Great production accident.If it find that in time, production loss can be reduced using the measure such as melting down, but cause production disruption, steel
Bag bricking is scrapped and increase production cost.
The content of the invention
The technical problem to be solved in the present invention is, in view of the foregoing defects the prior art has, there is provided a kind of infrared survey
The method that temperature technique prevents ladle slag line leakage, can carry out monitor in real time, so as to avoid ladle slag line to ladle slag line position
Leakage causes production accident, causes damage, and improves the security of production.
The present invention is for the solution technical scheme that adopted of above-mentioned technical problem：
A kind of method that infrared temperature-test technology prevents ladle slag line leakage, comprises the following steps：
1) by ladle slag line groove location apart from electrode it is nearest and near air-vent ladle shell outside left, as
By point for measuring temperature, and mark is done on point for measuring temperature；
2) multiple infrared continuous temperature measurement probes are installed outside ladle, by infrared continuous temperature measurement alignment probe point for measuring temperature；
3) infrared continuous temperature measurement probe is connected by the temperature display watch computer indoor with control, computer passes through infrared company
Continuous temperature probe is shown the temperature data for collecting by computer screen to point for measuring temperature collecting temperature；
4) high temperature alarm temperature is set on computers；
5) when computer is popped one's head in by infrared continuous temperature measurement, and the temperature for collecting meets or exceeds high temperature alarm temperature, stand
Stop heating；
6) change ladle or melt down operation, it is to avoid ladle slag line leakage.
According to above-mentioned technical proposal, the step 1) in, the number of air-vent is 2, the number of corresponding point for measuring temperature
For 2, it is respectively arranged in the left and right sides of ladle.
According to above-mentioned technical proposal, the step 2) in, each infrared continuous temperature measurement probe one point for measuring temperature of correspondence.
According to above-mentioned technical proposal, described step 4) in, high temperature alarm temperature is 400 DEG C～500 DEG C.
According to above-mentioned technical proposal, in step 4) and step 5) between it is further comprising the steps of：Computer is by infrared continuous
When the constant temperature rising that temperature probe is collected reaches 360 DEG C, judge that the residual thickness of its slag lining is very thin.
The invention has the advantages that：
Monitor in real time can be carried out to ladle slag line position by this method, when infrared probe thermometric exceedes high temperature alarm temperature
Degree, stops immediately the use of ladle, can carry out changing ladle or melt down operation, so as to avoid ladle slag line leakage from causing to produce thing
Therefore, cause damage, improve the security of production.
Description of the drawings
Fig. 1 is the operating diagram of the method for embodiment of the present invention mid-infrared thermometry prevention ladle slag line leakage；
Fig. 2 is the K direction views of Fig. 1；
Fig. 3 is the sectional view of the M-M of Fig. 2；
In figure, 1- electrodes, 2- air-vents, 3- points for measuring temperature, 4- slag line grooves, the infrared continuous temperature measurement probes of 5-, 6- wires, 7- behaviour
Make room, 8- temperature display watches, 9- computer screens, 10- ladles.
Specific embodiment
With reference to the accompanying drawings and examples the present invention is described in detail.
With reference to shown in Fig. 1～Fig. 3, the infrared temperature-test technology prevention ladle slag line in one embodiment that the present invention is provided is worn
The method of leakage, comprises the following steps：
1) by the outside portion of nearest and near air-vent 2 the shell of ladle 10 of 10 slag line groove of ladle, 4 positional distance electrode 1
Position, as by point for measuring temperature 3, and does mark on point for measuring temperature 3；
2) in the multiple infrared continuous temperature measurement probes 5 of the outer installing of ladle 10, infrared continuous temperature measurement probe 5 is directed at into point for measuring temperature 3；
3) infrared continuous temperature measurement probe 5 is connected by the computer indoor with control of temperature display watch 8, computer is by infrared
Continuous temperature measurement 5 pairs of collecting temperatures of point for measuring temperature 3 of probe, and the temperature data for collecting is shown by computer screen 9；
4) high temperature alarm temperature is set on computers；
5) when computer is by infrared continuous temperature measurement probe 5, when the temperature for collecting meets or exceeds high temperature alarm temperature, stand
Stop heating；
6) change ladle 10 or melt down operation, it is to avoid the slag line leakage of ladle 10.
Monitor in real time can be carried out to the slag lining of ladle 10 by this method, when infrared probe thermometric exceedes high temperature alarm
Temperature, stops immediately the use of ladle 10, can carry out changing ladle 10 or melt down operation, so as to avoid the slag line leakage of ladle 10 from causing
Production accident, causes damage, and improves the security of production.
Further, the step 1) in, the number of air-vent 2 is 2, and the number of corresponding point for measuring temperature 3 is also 2,
It is respectively arranged in the left and right sides of ladle 10.
Further, the step 2) in, each one point for measuring temperature 3 of correspondence of infrared continuous temperature measurement probe 5.
Further, described step 4) in, high temperature alarm temperature is 400 DEG C～500 DEG C.
Further, in step 4) and step 5) between it is further comprising the steps of：Computer is by infrared continuous temperature measurement probe 5
When the constant temperature rising for collecting reaches 360 DEG C, judge that the residual thickness of its slag lining is very thin.
Further, the mark of two points for measuring temperature 3 is individually identified as A, B.
Further, infrared continuous temperature measurement probe 5 is arranged in the stove region of ladle 10.
Further, two air bricks are provided with ladle 10, two blocks of air bricks are to there are two air-vents 2.
Further, the digital-scroll technique instrument of infrared continuous temperature measurement probe 5 is arranged at interior.
Further, the number of electrode 1 is 3 in ladle 10.
Further, infrared continuous temperature measurement is popped one's head in, connected by wire 6 between temperature display watch 8 and computer.
Further, computer and temperature display watch 8 may be contained within operating room 7.
In one embodiment of the present of invention, the operation principle of the present invention：
At present infrared continuous bath temperature measurement technology is quite mature and stable, can find cost performance in the range of 0～900 DEG C of temperature good
Probe well and display instrument.The slag lining of ladle 10 outside box hat temperature under normal circumstances in the range of 200～260 DEG C, such as
The slag lining of fruit ladle 10 outside box hat temperature has reached 360 DEG C, it can be determined that residual thickness of residue pile is relatively thin at this；If temperature at this
Degree has exceeded 450 DEG C or higher, it can be determined that residue pile is etched and wears at this.Still be set to high temperature alarm temperature by 450 DEG C
Degree.
Technical scheme：1. the slag line groove 4 of ladle 10 apart from electrode 1 it is nearest and near the side of air-vent 2 the shell of ladle 10
Position paint does mark, because our factory has two blocks of air bricks, therefore does mark in the left and right sides of ladle 10.2. in ladle 10
Two infrared continuous temperature measurement probes 5 are installed in stove region, are directed at the identification point thermometric of ladle 10.3. it is the temperature of infrared probe is digital aobvious
Show that instrument is installed indoors.4. it is connected on computer screen 9 with specific software and is shown.5. high temperature alarm temperature is set on computers
Degree.6. when infrared probe temperature measurement data starts persistently to rise, it can be determined that the residual thickness of its slag lining is very thin.When infrared spy
Head thermometric stops immediately heating more than high temperature alarm temperature, carries out changing ladle 10 or melts down operation, so as to avoid the slag line of ladle 10
Leakage.
1st, paint at nearest apart from electrode 1 in the slag line groove 4 of ladle 10 and near the side of air-vent 2 the shell position of ladle 10
Mark is done, because our factory there are two blocks of air bricks, therefore mark is done in the left and right sides of ladle 10, be individually identified as A, B.Such as Fig. 1,
Shown in Fig. 2.
2nd, two infrared continuous temperature measurement probes 5, respectively probe 1,2 are installed in the stove region of ladle 10.As shown in Figure 3.
3rd, the digital-scroll technique instrument of infrared probe is installed indoors.As shown in Figure 3.
4th, it is connected on computer screen 9 with specific software and is shown.As shown in Figure 3.
5th, high temperature alarm temperature is set on computers.
6th, 360 DEG C are reached when infrared probe temperature measurement data starts persistently to rise, it can be determined that the residual thickness of its slag lining is very thin.
7th, when infrared probe temperature measurement data meets or exceeds 450 DEG C of high temperature alarm temperature, heating is stopped immediately, carries out changing steel
Bag 10 melts down operation, so as to avoid the slag line leakage of ladle 10.
After patent working, the slag line leakage accident of ladle 10 can be avoided.Ladle slag line leakage accident steel mill occur it is general
Rate is about annual 1 time, its loss for producing：Whole stove steel is changed into waste product, and ladle lining need to be removed and built by laying bricks or stones again, and ladle shell is needed
Repair.Per average tap 115t of stove, 1300 yuan of loss due to spoiled work per ton, its loss for being changed into waste product is 115 × 1300 ≈ 15
(ten thousand yuan)；Ladle lining loses：Permanent layer builds about 20,000 yuan by laying bricks or stones again, and working lining loses about 80,000 yuan, adds up to 2+8=10
(ten thousand yuan)；About 40,000 yuan of ladle shell rehabilitation expense.Year benefit is：15+10+2=27 (ten thousand yuan).
Only presently preferred embodiments of the present invention above, can not limit the interest field of the present invention with this certainly,
Therefore the equivalence changes made according to scope of the present invention patent, still belong to protection scope of the present invention.
Claims (5)
1. a kind of method that infrared temperature-test technology prevents ladle slag line leakage, it is characterised in that comprise the following steps：
1) by ladle slag line groove location apart from electrode it is nearest and near air-vent ladle shell outside left, as tested
Warm spot, and mark is done on point for measuring temperature；
2) multiple infrared continuous temperature measurement probes are installed outside ladle, by infrared continuous temperature measurement alignment probe point for measuring temperature；
3) infrared continuous temperature measurement probe is connected by the temperature display watch computer indoor with control, computer is by infrared continuous survey
Temperature probe is shown the temperature data for collecting by computer screen to point for measuring temperature collecting temperature；
4) high temperature alarm temperature is set on computers；
5) when computer is popped one's head in by infrared continuous temperature measurement, and the temperature for collecting meets or exceeds high temperature alarm temperature, stop immediately
Only heat；
6) change ladle or melt down operation, it is to avoid ladle slag line leakage.
2. the method that infrared temperature-test technology according to claim 1 prevents ladle slag line leakage, it is characterised in that the step
It is rapid 1) in, the number of air-vent is 2, and the number of corresponding point for measuring temperature is also 2, is respectively arranged in the left and right sides of ladle.
3. the method that infrared temperature-test technology according to claim 1 prevents ladle slag line leakage, it is characterised in that the step
It is rapid 2) in, each infrared continuous temperature measurement probe one point for measuring temperature of correspondence.
4. the method that infrared temperature-test technology according to claim 1 prevents ladle slag line leakage, it is characterised in that described
Step 4) in, high temperature alarm temperature is 400 DEG C～500 DEG C.
5. the method that infrared temperature-test technology according to claim 4 prevents ladle slag line leakage, it is characterised in that in step
4) and step 5) between it is further comprising the steps of：Computer is reached by the constant temperature rising that infrared continuous temperature measurement probe is collected
When 360 DEG C, judge that the residual thickness of its slag lining is very thin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611193199.XA CN106595872A (en) | 2016-12-21 | 2016-12-21 | Method for preventing ladle slag line leakage by infrared temperature measuring technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611193199.XA CN106595872A (en) | 2016-12-21 | 2016-12-21 | Method for preventing ladle slag line leakage by infrared temperature measuring technology |
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| Publication Number | Publication Date |
|---|---|
| CN106595872A true CN106595872A (en) | 2017-04-26 |
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| CN201611193199.XA Pending CN106595872A (en) | 2016-12-21 | 2016-12-21 | Method for preventing ladle slag line leakage by infrared temperature measuring technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108519170A (en) * | 2018-04-28 | 2018-09-11 | 新兴铸管股份有限公司 | A kind of device and method of detection refining furnace steel ladle case temperature |
| CN110935871A (en) * | 2020-01-02 | 2020-03-31 | 新余钢铁股份有限公司 | Steel ladle structure and manufacturing method thereof |
| CN113418623A (en) * | 2021-05-17 | 2021-09-21 | 天津钢铁集团有限公司 | Non-contact type temperature measuring device for slag line part of lower nozzle and slag line adjusting method |
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|---|---|---|---|---|
| CN108519170A (en) * | 2018-04-28 | 2018-09-11 | 新兴铸管股份有限公司 | A kind of device and method of detection refining furnace steel ladle case temperature |
| CN110935871A (en) * | 2020-01-02 | 2020-03-31 | 新余钢铁股份有限公司 | Steel ladle structure and manufacturing method thereof |
| CN113418623A (en) * | 2021-05-17 | 2021-09-21 | 天津钢铁集团有限公司 | Non-contact type temperature measuring device for slag line part of lower nozzle and slag line adjusting method |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170703 Address after: 430083, Gate No. 2, Qingshan District, Hubei, Wuhan Applicant after: Wuhan iron and Steel Company Limited Address before: 430083 Qingshan District, Hubei, Wuhan factory before the door No. 2 Applicant before: WUHAN IRON AND STEEL CORPORATION |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20170426 |