CN102322804A - Method of detecting erosion degree of lining of argon oxygen decarburizing furnace - Google Patents
Method of detecting erosion degree of lining of argon oxygen decarburizing furnace Download PDFInfo
- Publication number
- CN102322804A CN102322804A CN201110134373A CN201110134373A CN102322804A CN 102322804 A CN102322804 A CN 102322804A CN 201110134373 A CN201110134373 A CN 201110134373A CN 201110134373 A CN201110134373 A CN 201110134373A CN 102322804 A CN102322804 A CN 102322804A
- Authority
- CN
- China
- Prior art keywords
- furnace
- lining
- temperature
- furnace shell
- steel plate
- 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
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention relates to a method of detecting the erosion degree of a lining of an argon oxygen decarburizing furnace, which is used for detecting the erosion degree of linings of 80-180 tonnes of argon oxygen decarburizing furnaces and comprises the following steps of: I. enabling a temperature measuring gun to be aligned at a part to be measured of the surface of a steel plate of a furnace shell of a furnace body and be vertical to a part to be measured of the furnace shell, and pressing on a button to display the temperature of the surface of the steel plate of the furnace shell of the furnace body on a display screen of the temperature measuring gun; and II. obtaining the thickness of residues of a working layer of the furnace lining by comparing the relation between the surface temperature of the steel plate of the furnace shell of the furnace body and the thickness of the working layer of the furnace lining according to the temperature displayed on a displayer of the temperature measuring gun, wherein the surface temperature of the furnace shell is 400 DEG C-450 DEG C, and the thickness of the working layer of the furnace body is 150mm-200mm. The method of detecting the erosion degree of the lining of the argon oxygen decarburizing furnace can be used for measuring the surface temperature of the steel plate of the furnace shell at any time in the argon oxygen decarburizing furnace production process without stopping the production and is convenient; and the measurement accuracy rate can reach 96%.
Description
Technical field
The present invention relates to a kind of detection argon oxygen lining wear degree methods, specifically is to detect 80-180 ton argon oxygen lining wear degree methods.
Background technology
Aborning, will regularly measure each stove labour lining wear degree of argon oxygen stove, particularly in the stove labour later stage, along with furnace life increases, because furnace lining is corroded by slag, lining thickness diminishes gradually.For preventing that lining wear from seriously causing the bleed-out accident, influence is produced, and uses as a servant the later stage to furnace lining at stove, and especially the frequency is measured at the shaft place increases, through grasping the lining wear degree, to guarantee each stove labour replacing under economic furnace life.
Existing measurement argon oxygen lining thickness, promptly argon oxygen lining wear degree is to adopt thicknessmeter; Each measurement need stop to smelt; Empty stove is measured more than the 6min, and about 100 times of each stove labour of argon oxygen furnace life, the annual furnace lining number of times of changing is more; It is also corresponding more to measure the lining thickness number of times with thicknessmeter, usually has influence on production.
Summary of the invention
For overcoming the existing deficiency that detects on the argon oxygen lining wear degree method, the present invention provides a kind of 80-180 ton argon oxygen stove when producing, to detect its lining wear degree methods.
Design of the present invention is: because in the smelting stainless steel process, the argon/oxygen furnace lining brick is corroded by slag, and along with smelting the heat increase, lining thickness reduces gradually, the relative variation of backup lining brick heat-insulating capability, and furnace shell surface of steel plate temperature raises relatively.The present invention is according to these characteristics; When argon oxygen stove is produced through furnace shell surface of steel plate temperature being measured with temperature-measuring gun; Found out the corresponding relation between shaft place furnace shell surface of steel plate temperature and the lining thickness, and used its corresponding relation and judge each stove labour in different each position lining wear degree of period shaft, furnace lining is changed in blowing out in time when lining wear is put to the safety limit like this; Thereby reach economic furnace life, realize steady production.
The argon/oxygen furnace lining is made up of permanent layer and working lining, and working lining directly contacts with the interior steel of stove, slag liquid.Argon/oxygen furnace is in furnace shell steel plate thickness 30-55mm; Shaft place permanent layer is a magnesium brick, and brick is long, i.e. permanent layer thickness 75-115mm; Working lining is the magnesium calcareous brick.
The condition of this detection 80-180 ton argon oxygen lining wear degree methods foundation is:
I temperature-measuring gun temperature-measuring range-30 ℃-1200 ℃, optical resolution 120: 1, spectral range 8-14 μ m, aiming mode is single laser.
II with shaft place furnace lining working lining residual thickness in the 150mm-200mm scope as the safety limit point; The relation of shaft place furnace shell surface of steel plate temperature and furnace lining working lining thickness is: when shaft place furnace shell surface of steel plate temperature was 400 ℃-450 ℃, shaft place working lining thickness was 150mm-200mm.
Furnace life and thermometric number of times:
This detection 80-180 ton argon oxygen lining wear degree methods comprises following sequential steps:
I aims at shaft place furnace shell surface of steel plate desire with temperature-measuring gun and surveys the position, and vertical with furnace shell desire survey position, pins button, on the temperature-measuring gun display screen, demonstrates shaft place furnace shell surface of steel plate temperature.
II is according to temperature displayed on the temperature-measuring gun display, the relation that contrasts surface temperature and the furnace lining working lining thickness of following shaft furnace shell steel plate get final product furnace lining working lining residual thickness:
400 ℃-450 ℃ of the surface temperatures of furnace shell, shaft place working lining thickness is 150mm-200mm.
The temperature-measuring gun that the present invention uses is portable infrared thermography instrument, can survey target temperature to desire fast and carry out noncontact, nondestructive measurement.This method can be measured furnace shell surface of steel plate temperature at any time in the production of argon oxygen stove and need not to stop to produce, and this method is convenient, fast, and it is the same with thicknessmeter to survey accurate rate; Can reach 96%; Help to judge each stove labour in different period shaft place lining wear degree, can accomplish timely blowing out replacing furnace lining when lining wear is put to the safety limit, can avoid occurring the bleed-out accident; Reach economic furnace life, realize steady production.
Embodiment
Specify embodiment of the present invention below in conjunction with embodiment, but embodiment of the present invention is not limited to following embodiment.
Embodiment one
Present embodiment carries out on 180t argon oxygen stove.This stove shaft furnace shell steel plate thickness 55mm, shaft place furnace lining permanent layer is a magnesia fire-protecting wall, the permanent bed thickness 75mm in shaft place, working lining is that magnesium is calcareous.The furnace lining working lining residual thickness 150mm-200mm of shaft place is the safety limit point.
When argon/oxygen furnace is 116 times age, during online production, temperature-measuring gun is aimed at gudgeon position, shaft east; And it is perpendicular; Pin button, continuous temperature measurement 3 times demonstrates 436 ℃, 439 ℃, 438 ℃ respectively on the temperature-measuring gun display screen; According to temperature and furnace lining working lining thickness relationship: when shaft place furnace shell surface of steel plate temperature is 400 ℃-450 ℃; Shaft place working lining thickness is 150mm-200mm, and this gudgeon position, shaft east furnace lining working lining thickness has arrived the safety limit point, has refined this stove steel blowing out and has changed furnace lining.This gudgeon position furnace lining working lining thickness 162mm when tearing stove open.
Embodiment two
Present embodiment carries out on 80t argon oxygen stove.This stove shaft furnace shell steel plate thickness 40mm, shaft place furnace lining permanent layer is a magnesia fire-protecting wall, the permanent bed thickness 75mm in shaft place, working lining is that magnesium is calcareous.Furnace lining working lining residual thickness 150mm-200mm is the safety limit point.
When argon/oxygen furnace is 133 times age, during online production, temperature-measuring gun is aimed at gudgeon position, shaft west; And it is perpendicular; Pin button, continuous temperature measurement 3 times demonstrates 422 ℃, 418 ℃, 421 ℃ respectively on the temperature-measuring gun display screen; According to temperature and furnace lining working lining thickness relationship: when shaft place furnace shell surface of steel plate temperature was 400 ℃-450 ℃, shaft place working lining thickness was 150mm-200mm.This gudgeon position, shaft west furnace lining working lining thickness has arrived the safety limit point, has refined this stove steel blowing out and has changed furnace lining, this gudgeon position furnace lining working lining thickness 190mm when tearing stove open.
The temperature-measuring gun that uses in the foregoing description is portable infrared thermography instrument, temperature-measuring range-30 ℃-1200 ℃, and optical resolution 120: 1, spectral range 8-14 μ m, aiming mode is single laser.
Claims (2)
1. one kind is detected argon oxygen lining wear degree methods, and it is to detect 80-180 ton argon oxygen lining wear degree methods, and it comprises following sequential steps:
I aims at shaft place furnace shell surface of steel plate desire with temperature-measuring gun and surveys the position, and vertical with furnace shell desire survey position, pins button, on the temperature-measuring gun display screen, demonstrates shaft place furnace shell surface of steel plate temperature;
II is according to temperature displayed on the temperature-measuring gun display, the relation that contrasts surface temperature and the furnace lining working lining thickness of following shaft furnace shell steel plate get final product furnace lining working lining residual thickness:
400 ℃-450 ℃ of the surface temperatures of furnace shell, shaft place working lining thickness is 150mm-200mm.
2. detection argon oxygen lining wear degree methods according to claim 1 is characterized in that: used temperature-measuring gun temperature-measuring range-30 ℃-1200 ℃, and optical resolution 120: 1, spectral range 8-14 μ m, aiming mode is single laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110134373A CN102322804A (en) | 2011-05-21 | 2011-05-21 | Method of detecting erosion degree of lining of argon oxygen decarburizing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110134373A CN102322804A (en) | 2011-05-21 | 2011-05-21 | Method of detecting erosion degree of lining of argon oxygen decarburizing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102322804A true CN102322804A (en) | 2012-01-18 |
Family
ID=45450600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110134373A Pending CN102322804A (en) | 2011-05-21 | 2011-05-21 | Method of detecting erosion degree of lining of argon oxygen decarburizing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102322804A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105803153A (en) * | 2016-04-05 | 2016-07-27 | 钢铁研究总院 | Real-time online monitoring system and method for safety of refectory material of converter lining |
| CN106595872A (en) * | 2016-12-21 | 2017-04-26 | 武汉钢铁股份有限公司 | Method for preventing ladle slag line leakage by infrared temperature measuring technology |
| CN112325653A (en) * | 2020-09-28 | 2021-02-05 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Repairing method of metal mixer lining |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1565775A (en) * | 2003-06-10 | 2005-01-19 | 傅德生 | Manufacturing technique of bimetallic compound pipe |
| CN101514896A (en) * | 2008-09-02 | 2009-08-26 | 中冶华天工程技术有限公司 | Convertor lining thickness online testing method and device thereof |
-
2011
- 2011-05-21 CN CN201110134373A patent/CN102322804A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1565775A (en) * | 2003-06-10 | 2005-01-19 | 傅德生 | Manufacturing technique of bimetallic compound pipe |
| CN101514896A (en) * | 2008-09-02 | 2009-08-26 | 中冶华天工程技术有限公司 | Convertor lining thickness online testing method and device thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105803153A (en) * | 2016-04-05 | 2016-07-27 | 钢铁研究总院 | Real-time online monitoring system and method for safety of refectory material of converter lining |
| CN105803153B (en) * | 2016-04-05 | 2018-05-01 | 钢铁研究总院 | The real time on-line monitoring system and method for converter lining refractory material security |
| CN106595872A (en) * | 2016-12-21 | 2017-04-26 | 武汉钢铁股份有限公司 | Method for preventing ladle slag line leakage by infrared temperature measuring technology |
| CN112325653A (en) * | 2020-09-28 | 2021-02-05 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Repairing method of metal mixer lining |
| CN112325653B (en) * | 2020-09-28 | 2022-09-20 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Repairing method of metal mixer lining |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2014252322A1 (en) | Method for determining the state of the tap of a metallurgical vessel in particular | |
| CN102322804A (en) | Method of detecting erosion degree of lining of argon oxygen decarburizing furnace | |
| Zhao et al. | Study on the early warning mechanism for the security of blast furnace hearths | |
| RU2015104030A (en) | METHOD AND DEVICE FOR MEASURING LEVELS OF IRON AND SLAG IN A BLAST FURNACE | |
| JP2009162610A (en) | Measurement method of refractory layer residual dimension on molten metal vessel | |
| CN105891033A (en) | Durometer for measuring variable-temperature hardness of metal material | |
| CN101907496A (en) | Testing method of baking temperature of steel ladle | |
| CN102137941B (en) | Method for controlling foamed slag in a stainless melt in an electric arc furnace | |
| JP5487730B2 (en) | Refractory life prediction method and refractory residual thickness estimation method | |
| CN105803153A (en) | Real-time online monitoring system and method for safety of refectory material of converter lining | |
| CN201138230Y (en) | Electric furnace slag iron liquid level measuring apparatus | |
| CN104525926B (en) | Ladle roll off the production line judge method | |
| CN202193800U (en) | Special tool for measuring size of hearth | |
| CN102303101B (en) | Method for online measurement of bottom residual thickness of molten steel pot | |
| CN205934001U (en) | Well formula cementation furnace with visit monitor function | |
| CN106868249B (en) | The decision-making system and method for metallurgical furnace furnace lining safety based on temperature pre-warning mechanism | |
| CN107858466A (en) | The Forecasting Methodology of charge level depth during a kind of blast furnace level-lowering blowing out | |
| CN205786161U (en) | A kind of durometer of measuring metallic materials alternating temperature hardness | |
| CN204806896U (en) | Refractoriness survey device | |
| CN204514088U (en) | A kind of refining furnace being convenient to measuring tempeature | |
| JP5854200B2 (en) | Blast furnace operation method | |
| CN110926619A (en) | Continuous temperature measurement method for temperature of molten steel in steel ladle | |
| Snow et al. | DIGITALLY MAPPING THE FUTURE OF GLASS FURNACES WITH LASERS | |
| Swartling et al. | Experimentally determined temperatures in blast furnace hearth | |
| JPH0384393A (en) | Measuring device for thickness of side walls for ladle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120118 |