CN107389768A - A kind of molybdenum pin that oxygen cell is determined for molten steel - Google Patents
A kind of molybdenum pin that oxygen cell is determined for molten steel Download PDFInfo
- Publication number
- CN107389768A CN107389768A CN201710702862.2A CN201710702862A CN107389768A CN 107389768 A CN107389768 A CN 107389768A CN 201710702862 A CN201710702862 A CN 201710702862A CN 107389768 A CN107389768 A CN 107389768A
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- CN
- China
- Prior art keywords
- reference electrode
- powder
- molten steel
- molybdenum pin
- molybdenum
- 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.)
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000001301 oxygen Substances 0.000 title claims abstract description 35
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 35
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 229910052750 molybdenum Inorganic materials 0.000 title claims abstract description 27
- 239000011733 molybdenum Substances 0.000 title claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 23
- 239000010959 steel Substances 0.000 title claims abstract description 23
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 24
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 13
- 239000011777 magnesium Substances 0.000 claims abstract description 13
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims description 23
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 18
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 12
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 12
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 10
- 229960004643 cupric oxide Drugs 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 5
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 239000011651 chromium Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 229910052697 platinum Inorganic materials 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 241000790917 Dioxys <bee> Species 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 7
- 239000004576 sand Substances 0.000 description 9
- 238000003723 Smelting Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000012946 outsourcing Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- DQMUQFUTDWISTM-UHFFFAOYSA-N O.[O-2].[Fe+2].[Fe+2].[O-2] Chemical compound O.[O-2].[Fe+2].[Fe+2].[O-2] DQMUQFUTDWISTM-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 208000018875 hypoxemia Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- QRNPTSGPQSOPQK-UHFFFAOYSA-N magnesium zirconium Chemical compound [Mg].[Zr] QRNPTSGPQSOPQK-UHFFFAOYSA-N 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Abstract
The invention provides a kind of molybdenum pin that oxygen cell is determined for molten steel, the molten steel, which determines oxygen cell, includes magnesium stabilizing zirconia pipe and the reference electrode being filled in the magnesium stabilizing zirconia pipe, and the molybdenum pin is plugged in the reference electrode and is conducted with the reference electrode.Wherein, the molybdenum pin is coated with metal level.The present invention while preventing molybdenum wire surface to be oxidized by molybdenum pin kalamein layer, can also can further reduce the contact resistance with reference electrode, and then be greatly improved measurement accuracy.
Description
Technical field
The present invention relates to sensor technical field in smelting industry, and in particular to one kind in smelting industry is determined for molten steel
The molybdenum pin of oxygen cell.
Background technology
Molten steel Determining oxygen probe is mainly formed by determining oxygen sand head and paper tube, and it is mainly used for the steelmaking process in smelting industry
In, liquid steel temperature and oxygen content are measured, belongs to the high-tech product for smelting detection technique, to the quality technology controlling and process of smelting process
There is important directive function, be requirement of major steel mill in smelting process, and be expendable consumed product, per stove molten steel
The multiple measurement of this product is all had to pass through, to complete to make steel required requirement.1.2 meters of long paper on oxygen sand headgear are determined during use
Pipe, engagement Special industrial PC apparatus for determination of oxygens, which are connected to, determines oxygen rifle, then in the front end insertion paper tube for determining oxygen rifle and with determining oxygen sand head phase
Grafting, by the front end insertion molten steel for determining oxygen sand head, the data that all processes measure were rapidly completed in 8 seconds, in molten steel
Composition and oxygen content, the consumption of steel quality, lumber recovery play conclusive effect.
Wherein, determine oxygen sand head front end and be provided with magnesium stabilizing zirconia pipe and thermocouple.Magnesium stabilizing zirconia pipe is provided with reference electricity
Pole and molybdenum pin.Reference electrode is typically based on the powder of chromium, chrome green and di-iron trioxide.Molybdenum pin is plugged in reference electrode
In, it is connected with apparatus for determination of oxygen.It is oxidized easily current molybdenum pin in process, and then causes its connecing with reference electrode
Resistance of getting an electric shock raises, and have impact on output and the measurement accuracy of signal.
The content of the invention
To solve the above problems, this invention address that a kind of molybdenum pin that oxygen cell is determined for molten steel of offer, is allowed it to
With reference electrode good contact.
The invention provides a kind of molybdenum pin that oxygen cell is determined for molten steel, the molten steel, which determines oxygen cell, includes the stable oxidation of magnesium
Zirconium pipe and the reference electrode being filled in the magnesium stabilizing zirconia pipe, the molybdenum pin be plugged in the reference electrode and with institute
Reference electrode is stated to be conducted.Wherein, the molybdenum pin is coated with metal level.
Preferably, the thickness of the metal level 42 is 2~10 μm.
Preferably, the material of the metal level 42 is chromium, platinum or silver.
Preferably, the reference electrode is mixed by chromium powder, chrome green powder and ferric oxide powder, its parts by weight
Match and be：Chromium powder 60-90, chrome green powder 5-20, ferric oxide powder 10-30.
Or the reference electrode is mixed by chromium powder, manganese dioxide powder and cupric oxide powder, its weight is：
Chromium powder 60-90, cupric oxide powder 10-30, manganese dioxide powder 5-20.
The present invention while preventing molybdenum wire surface to be oxidized by that in molybdenum pin outsourcing metal-clad, be able to can also enter
The reduction of one step and the contact resistance in reference electrode, can be reduced to Ω levels, and then be greatly improved by its contact resistance from K Ω levels
Measurement accuracy.
Brief description of the drawings
Fig. 1 is the structural representation of the molten steel Determining oxygen probe of a preferred embodiment.
Fig. 2 is the structural representation for determining oxygen cell of a preferred embodiment.
Description of reference numerals：
1st, sand head；41st, reference electrode；6th, connector；
2nd, installing plate；42nd, metal level；7th, paper tube；
3rd, protective cap；43rd, molybdenum pin；
4th, magnesium stabilizing zirconia pipe；5th, thermocouple；
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing.In the description of the invention,
It should be noted that term " " center ", " on ", " under ", "left", "right", " vertical ", " level ", " interior ", the side of the instruction such as " outer "
Position or position relationship are based on orientation shown in the drawings or position relationship, are for only for ease of the description present invention and simplify description,
Rather than instruction or imply signified device or element must have specific orientation, with specific azimuth configuration and operation, because
This is not considered as limiting the invention.In addition, term " first ", " second ", " the 3rd " are only used for describing purpose, and can not
It is interpreted as indicating or implies relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Please refer to Fig. 1, Fig. 2.
The molten steel Determining oxygen probe of the present invention includes sand first 1, and is fixed on the installing plate 2 of first 1 front end of sand.It is solid on installing plate 2
Surely there are magnesium stabilizing zirconia pipe 4 and thermocouple 5.Magnesium stabilizing zirconia pipe 4 and thermocouple 5 are arranged on by protective cap 3 and installing plate 2
In the cavity surrounded.Thermocouple 5 is connected to the temperature survey port of apparatus for determination of oxygen by wire.In magnesium stabilizing zirconia pipe 4
It is filled with reference electrode 41.Molybdenum pin 43 is plugged in the reference electrode 41 in magnesium stabilizing zirconia pipe 4 forward.Protective cap 3 and molybdenum
Pin 43 is respectively connecting to the two poles of the earth of the voltage measurement port of apparatus for determination of oxygen.Protective cap 3 is made up of metal material.Wherein, magnesium Stable Oxygen
Change zirconium pipe 4, molybdenum pin 43 and the composition of reference electrode 41 and determine oxygen cell.
When in use, the front end for determining oxygen rifle is fixed in the paper tube of sand head rear end by connector insertion and grasped
Make.Determine oxygen rifle to be connected with apparatus for determination of oxygen.
Wherein, reference electrode 41 is made up of chromium powder, chrome green powder and ferric oxide powder；Its weight is：
Chromium powder 60-90, chrome green powder 5-20, ferric oxide powder 10-30.Or by chromium powder, manganese dioxide in reference electrode 41
Powder and cupric oxide powder composition, its weight are：Chromium powder 60-90, cupric oxide powder 10-30, manganese dioxide powder 5-20.
Wherein, molybdenum pin 43 is coated with the layers of chrome that thickness is 2~10 μm.
By in the outsourcing metal-clad of molybdenum pin 43, especially layers of chrome, can while preventing the surface of molybdenum pin 43 to be oxidized,
Can also further reduce with the contact resistance in reference electrode 41, specifically, its contact resistance can be reduced to Ω from K Ω levels
Level, and then can will shorten 0.2 second~0.5 second the response time, it is remarkably improved measurement accuracy.It is fixed especially for hypoxemia molten steel
The detector response time of oxygen probe pair is up to 2.5 seconds~3.5 seconds, already approaches very much the limiting value of 4 seconds (at generally more than 4 seconds
Measured current potential/oxygen concentration then regards as invalid data), thus drastically increase measurement accuracy
The non-detailed portion of other in the present invention belongs to prior art, therefore will not be repeated here.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (5)
1. a kind of molybdenum pin that oxygen cell is determined for molten steel, the molten steel, which determines oxygen cell, to be included magnesium stabilizing zirconia pipe (4) and loads
Reference electrode (41) in the magnesium stabilizing zirconia pipe (4), the molybdenum pin (43) are plugged in the reference electrode (41)
And it is conducted with the reference electrode (41), it is characterised in that the molybdenum pin (43) is coated with metal level (42).
2. molybdenum pin as claimed in claim 1, it is characterised in that the thickness of the metal level (42) is 2~10 μm.
3. molybdenum pin as claimed in claim 1, it is characterised in that the material of the metal level (42) is chromium, platinum or silver.
4. molten steel Determining oxygen probe as claimed in claim 1, it is characterised in that the reference electrode (41) is by chromium powder, three oxidations
Two chromium powders and ferric oxide powder mix, and its weight is：Chromium powder 60-90, chrome green powder 5-20, three oxidations
Two iron powder 10-30.
5. molten steel Determining oxygen probe according to claim 1, it is characterised in that the reference electrode (41) is by chromium powder, dioxy
Change manganese powder and cupric oxide powder mixes, its weight is：Chromium powder 60-90, cupric oxide powder 10-30, manganese dioxide powder 5-
20。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710702862.2A CN107389768A (en) | 2017-08-16 | 2017-08-16 | A kind of molybdenum pin that oxygen cell is determined for molten steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710702862.2A CN107389768A (en) | 2017-08-16 | 2017-08-16 | A kind of molybdenum pin that oxygen cell is determined for molten steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107389768A true CN107389768A (en) | 2017-11-24 |
Family
ID=60353346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710702862.2A Pending CN107389768A (en) | 2017-08-16 | 2017-08-16 | A kind of molybdenum pin that oxygen cell is determined for molten steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107389768A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113504282A (en) * | 2021-06-23 | 2021-10-15 | 北京浩德楚业新材料科技有限公司 | Preparation method of oxygen reference electrode material and oxygen determination probe |
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|---|---|---|---|---|
| DE2161796A1 (en) * | 1968-05-07 | 1973-06-14 | United States Steel Corp | Oxygen concn determination eg for molten steel |
| CN87208787U (en) * | 1987-06-06 | 1988-02-17 | 北京钢铁学院 | Multifunctional gaging head for melting steel |
| CN1527050A (en) * | 2003-03-07 | 2004-09-08 | ����˹�ص� | Apparatus for measuring oxygen activity in molten metal or slag |
| CN101323954A (en) * | 2008-07-03 | 2008-12-17 | 东华大学 | Preparation of molybdenum electrode surface glass matrix antioxidation coating |
| CN101546684A (en) * | 2009-04-30 | 2009-09-30 | 福州大学 | Anti-oxidation composite membrane electrode |
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-
2017
- 2017-08-16 CN CN201710702862.2A patent/CN107389768A/en active Pending
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113504282A (en) * | 2021-06-23 | 2021-10-15 | 北京浩德楚业新材料科技有限公司 | Preparation method of oxygen reference electrode material and oxygen determination probe |
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