CN107817021A - The manufacture method of molten steel oxygen measuring probe - Google Patents
The manufacture method of molten steel oxygen measuring probe Download PDFInfo
- Publication number
- CN107817021A CN107817021A CN201710841402.8A CN201710841402A CN107817021A CN 107817021 A CN107817021 A CN 107817021A CN 201710841402 A CN201710841402 A CN 201710841402A CN 107817021 A CN107817021 A CN 107817021A
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- Prior art keywords
- sand
- molten steel
- manufacture method
- outside
- iron pipe
- 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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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
- B05D7/146—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies to metallic pipes or tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
- B05D7/222—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
Abstract
The manufacture method of molten steel oxygen measuring probe is disclosed, it includes：A) iron pipe for being provided with temperature transducer is provided；B) to sand in coating refractory on the inside of the iron pipe；C) sand outside the iron pipe outer application fire resisting to sand in coating refractory；D) oxygen sensors are installed in the iron pipe of sand outside the coating refractory of outside；And resistance to pipe of burning paper as sacrificial offerings e) is inserted into the outside of the iron pipe of sand outside outer application fire resisting, so as to obtain the molten steel oxygen measuring probe.The molten steel oxygen measuring probe manufactured using this method, which is had, to be surveyed into rate height, favorable reproducibility, fast response time, can accurately reflect and make steel the good characteristics such as metallurgical rule.
Description
Field
The application relates generally to smelting sensor field.More specifically, the application is related to molten steel oxygen determination field.
Background
Molten steel oxygen measuring probe (also referred to as thermometric determines oxygen combined probe) is in molten steel smelting, refined, in the technical process of continuous casting
Detected, and carried out at random in the molten steel oxidation and reduction treatment process that measured parameter --- ----oxygen activity is embodied, together
When molten steel temperature, carbon or acid-soluble aluminum content are provided, than after traditional sampling steel laboratory assay evaluation method more rapidly,
Accurately, it is the technological achievement of liquid metal measurement most worthy.Its promotion and application are to promoting metallurgical scientific and technological progress and industry
The development of automated production, especially it is of great importance in terms of the product quality of steel is improved, develop kind.
General introduction
On the one hand, the application is related to the manufacture method of molten steel oxygen measuring probe, and it includes：A) provide and temperature transducer is installed
Iron pipe；B) to sand in coating refractory on the inside of the iron pipe；C) outside the iron pipe outer application fire resisting to sand in coating refractory
Sand；D) oxygen sensors are installed in the iron pipe of sand outside the coating refractory of outside；And e) by sand outside outer application fire resisting
Resistance to pipe of burning paper as sacrificial offerings is inserted in the outside of the iron pipe, so as to obtain the molten steel oxygen measuring probe.
On the other hand, the application is related to the method for quick measurement molten steel temperature and oxygen content, and it includes that following step will be included
In the molten steel oxygen measuring probe insertion molten steel that rapid manufacture method obtains, to obtain molten steel temperature and oxygen content：A) installation is provided
There is the iron pipe of temperature transducer；B) to sand in coating refractory on the inside of the iron pipe；C) outside to the iron pipe of sand in coating refractory
The outer sand of side coating refractory；D) oxygen sensors are installed in the iron pipe of sand outside the coating refractory of outside；And e) outside is applied
Resistance to pipe of burning paper as sacrificial offerings is inserted in the outside for covering the iron pipe of the outer sand of fire resisting, so as to obtain the molten steel oxygen measuring probe.
Another further aspect, the application are related to molten steel oxygen measuring probe, and the manufacture method comprised the following steps by it obtains：A) provide
The iron pipe of temperature transducer is installed；B) to sand in coating refractory on the inside of the iron pipe；C) to the iron of sand in coating refractory
The outer sand of pipe outer application fire resisting；D) oxygen sensors are installed in the iron pipe of sand outside the coating refractory of outside；And e) will be outer
Resistance to pipe of burning paper as sacrificial offerings is inserted in the outside of the iron pipe of the outer sand of side coating refractory, so as to obtain the molten steel oxygen measuring probe.
Brief Description Of Drawings
Fig. 1 shows that the thermometric of the embodiment of the application one determines oxygen performance graph.
It is described in detail
In the following description, including some concrete details are comprehensively managed with providing each disclosed embodiment
Solution.However, those skilled in the relevant art are not, it will be recognized that use one or more of these concrete details, and use other
Embodiment is still realized in the case of method, part, material etc..
Unless required otherwise in the application, in entire disclosure and appended claims, word " comprising ", " bag
Containing ", " containing " and " having " should be interpreted that meaning that is open, including formula, i.e., " include but is not limited to ".
" embodiment " mentioned throughout the specification, " embodiment ", " in another embodiment " or " at certain
In a little embodiments " mean an at least embodiment include it is related to described in the embodiment with specific reference to key element,
Structure or feature.Therefore, throughout the specification diverse location occur phrase " in one embodiment " or " in embodiment
In " or " in another embodiment " or " in certain embodiments " same embodiment need not be all referred to.In addition, specifically
Element, structure or feature can combine in one or more embodiments in any suitable manner.
Definition
Herein, term " sand in fire resisting " means resin sand shape bulk density uniformity after heat cure shaping, machinery
Intensity 10MPa distortion powers, the 12 seconds resin sand not being washed is stopped in 1760 DEG C of molten steel of refractoriness.
Herein, term " the outer sand of fire resisting " means resin sand shape bulk density uniformity after heat cure shaping, machinery
Intensity 10MPa distortion powers, the 12 seconds resin sand not being washed is stopped in 1760 DEG C of molten steel of refractoriness.
Herein, term " refractory cement " is meant through maintenance and baking process, more than 1800 DEG C of refractoriness under load
Unsetting aluminosilicate property castable refractory.
Herein, term " resistance to pipe of burning paper as sacrificial offerings " means that refractoriness stops the one of the 7-13 seconds in 1540 DEG C of -1760 DEG C of molten steel
Secondary property protects paper tube.
Specific embodiment
On the one hand, the application is related to the manufacture method of molten steel oxygen measuring probe, and it includes：A) provide and temperature transducer is installed
Iron pipe；B) to sand in coating refractory on the inside of the iron pipe；C) outside the iron pipe outer application fire resisting to sand in coating refractory
Sand；D) oxygen sensors are installed in the iron pipe of sand outside the coating refractory of outside；And e) by sand outside outer application fire resisting
Resistance to pipe of burning paper as sacrificial offerings is inserted in the outside of the iron pipe, so as to obtain the molten steel oxygen measuring probe.
In certain embodiments, temperature transducer is that S indexes temperature thermocouple silk.
In certain embodiments, temperature transducer is that the S that diameter is about Φ 0.07- Φ 0.1mm indexes temperature thermocouple
Silk.
In certain embodiments, temperature transducer does outer protection with high-purity high temperature resistant quartz glass, so as to complete steel
The measurement of coolant-temperature gage.
In certain embodiments, oxygen sensors are oxygen cell zirconium tube sensor.
In certain embodiments, the refractoriness under load of oxygen cell zirconium tube sensor is about 1800 DEG C, about 1400 DEG C-
The output of about -300 to+300mV electric potential signals can be produced in 1760 DEG C of molten steel.
In certain embodiments, the positive and negative electrode of temperature transducer is diameter about Φ 1.3- Φ 1.6mm S indexing compensation
Wire.
In certain embodiments, the positive electricity of oxygen sensors extremely iron pipe, Φ 1.3mm S indexing compensating wires are negative
Pole.
In certain embodiments, fix and be connected respectively with mash welder by nylon plastic(s) support and patched with nylon
Part, after by survey rifle lead be connected to instrument show measurement data.
In certain embodiments, sand is furane resins precoated sand in fire resisting.
In certain embodiments, the outer sand of fire resisting is furane resins precoated sand
In certain embodiments, by outer layer with half wood pulp papery, the pure wood pulp paper in middle level, the common papery of internal layer,
Coordinating fire resisting cement, rib-loop rolls fire resisting paper tube is prepared in three times.
In certain embodiments, the manufacture method of the application also including the use of high temperature resistant cement to sand in coating refractory
The iron pipe is sealed.
In certain embodiments, the top layer coating that the manufacture method of the application is also included to sand outside the coating refractory of outside is outer
Coating.
The molten steel oxygen measuring probe obtained using the manufacture method of the application, which is had, to be surveyed into rate height, favorable reproducibility, response speed
It hurry up, the good characteristics such as the metallurgical rule of steel-making can be accurately reflected.
On the other hand, the application is related to the method for quick measurement molten steel temperature and oxygen content, and it includes that following step will be included
In the molten steel oxygen measuring probe insertion molten steel that rapid manufacture method obtains, to obtain molten steel temperature and oxygen content：A) installation is provided
There is the iron pipe of temperature transducer；B) to sand in coating refractory on the inside of the iron pipe；C) outside to the iron pipe of sand in coating refractory
The outer sand of side coating refractory；D) oxygen sensors are installed in the iron pipe of sand outside the coating refractory of outside；And e) outside is applied
Resistance to pipe of burning paper as sacrificial offerings is inserted in the outside for covering the iron pipe of the outer sand of fire resisting, so as to obtain the molten steel oxygen measuring probe.
Another further aspect, the application are related to molten steel oxygen measuring probe, and the manufacture method comprised the following steps by it obtains：A) provide
The iron pipe of temperature transducer is installed；B) to sand in coating refractory on the inside of the iron pipe；C) to the iron of sand in coating refractory
The outer sand of pipe outer application fire resisting；D) oxygen sensors are installed in the iron pipe of sand outside the coating refractory of outside；And e) will be outer
Resistance to pipe of burning paper as sacrificial offerings is inserted in the outside of the iron pipe of the outer sand of side coating refractory, so as to obtain the molten steel oxygen measuring probe.
In certain embodiments, the molten steel temperature scope that the molten steel oxygen measuring probe of the application can measure is about 1450-
1750℃。
In certain embodiments, the oxygen voltage scope that the molten steel oxygen measuring probe of the application can measure be about -300 to+
300mV。
In certain embodiments, the oxygen activity scope that the molten steel oxygen measuring probe of the application can measure is about 1-
1000ppm。
In certain embodiments, oxygen cell electron ion circulation path is：
MO(-)/Cr+Cr2O3//ZrO2(MgO)//a[0]Fe/Fe(+)
In certain embodiments, the precision of the molten steel oxygen measuring probe of the application can reach:Oxygen cell reappearance is about
1600 DEG C, deviation about 2mV.
In certain embodiments, the precision of thermocouple wire can reach：At 1554 DEG C, 0 to+4 DEG C (Pd points).
In certain embodiments, process time is：Thermocouple about 3-6s, oxygen cell about 6-8s, oxygen determination overall process about 7-
9s。
In certain embodiments, using the survey that the molten steel oxygen measuring probe of the application is detected into rate>90%.
In certain embodiments, the external diameter of the molten steel oxygen measuring probe of the application is about 38mm, and internal diameter is about 18mm, overall length
About 1300mm.
Hereinafter, the application will be explained in detail by following examples to more fully understand each side of the application
Face and its advantage.It will be appreciated, however, that following embodiment is the nonrestrictive some realities for being simply used for illustrating the application
Apply scheme.
Embodiment
Manufacture embodiment
The molten steel oxygen measuring probe of the application is manufactured by the method comprised the steps.
1.S type thermocouple silks are fabricated to galvanic couple, and with quartzy protection of pipe；
2. oxygen cell positive pole welding signal lead；
3. dress S type thermocouples compensating wire, oxygen cell, S type thermocouples patch in plastic stent and signal lead
It is fixed on part；
4. S type thermocouple silk both positive and negative polarities are welded on into compensating wire both positive and negative polarity, oxygen cell positive signal lead is welded
In compensating wire negative pole；
5. the core of above-said current signal is inserted into iron protection pipe；
6. by coated with resins fire sand in wiring core iron protection pipe, i.e., interior sand (upper end retains 5mm space), it is put into 150
Sand thermocoagulation in 1 minute in DEG C oven, refractory cement sealing is poured into after taking-up in the space that upper end retains 5mm.
(connector of thermocouple, oxygen cell and lead is revealed 7. the above-mentioned core iron pipe made is put into metal can
Go out outside metal can) the outer sand of coated with resins fire resisting, it is put into the outer sand thermocoagulation of 1 minute resin in 150 DEG C of ovens；
8. outer sand top layer coating refractory glue external coating；
9. the above-mentioned molten steel oxygen measuring probe iron pipe lead connector end made is inserted into fire resisting paper tube, and filled out with fire clay
Seam.
Measure embodiment
The molten steel oxygen measuring probe obtained using manufacture embodiment carries out the present embodiment.
1. it is determined that working condition under carry out：
Stokehold after-blow, add alloy material to be sufficiently mixed (2 minutes) re-test afterwards, stop opening again for 60 seconds after adding Al and Argon after stove
Begin to test, otherwise produce measurement error.So on the premise of ensureing to produce, to leave time enough and be tested, make number
According to stable.
2. operating method：
(1) probe must reliably be connected the quick slag that is inserted through into 60 degree of 30-40cm inclinations angle in liquid steel with rifle, avoid
The influence of furnace lining and clinker.
(2) steady survey rifle, overcomes shake as possible, avoids oxygen activity numerical fluctuations.
(3) pop one's head in, survey rifle, compensating wire and must keep drying and good state, otherwise will influence to survey into rate and accurate
Degree.
On July 3rd, 2016 two steel RH application of vacuum DW6 cold rolled silicon steel actual observation records curves as shown in Figure 1.Temperature and oxygen
The response curve of electric potential signal shows stabilised platform and short response time.
From the foregoing it is appreciated that although describing specific embodiments of the present invention for the purpose of exemplary illustration,
But under condit without departing from the spirit and scope of the present invention, technical staff described in this area can make various modifications or change
Enter.These deformations or modification should all fall into the application scope of the following claims.
Claims (10)
1. the manufacture method of molten steel oxygen measuring probe, it includes：
A) iron pipe for being provided with temperature transducer is provided；
B) to sand in coating refractory on the inside of the iron pipe；
C) sand outside the iron pipe outer application fire resisting to sand in coating refractory；
D) oxygen sensors are installed in the iron pipe of sand outside the coating refractory of outside；And
E) resistance to pipe of burning paper as sacrificial offerings is inserted into the outside of the iron pipe of sand outside outer application fire resisting, visited so as to obtain the molten steel oxygen determination
Head.
2. manufacture method as claimed in claim 1, wherein the temperature transducer, which is S, indexes temperature thermocouple silk, preferably directly
Footpath is Φ 0.07- Φ 0.1mm.
3. manufacture method as claimed in claim 1 or 2, wherein the oxygen sensors are oxygen cell zirconium tube sensor.
4. the manufacture method as described in any claim in claims 1 to 3, wherein the positive and negative electrode of the temperature transducer
Compensating wire is indexed for diameter of phi 1.3- Φ 1.6mm S.
5. the manufacture method as described in any claim in Claims 1-4, wherein the electrode of the oxygen sensors is iron
The negative pole of pipe and compensating wire.
6. the manufacture method as described in any claim in claim 1 to 5, wherein sand and the outer sand of fire resisting are in the fire resisting
Furane resins precoated sand.
7. the manufacture method as described in any claim in claim 1 to 6, wherein by outer layer with half wood pulp papery, in
The pure wood pulp paper of layer, the common papery of internal layer, rib-loop rolls the fire resisting paper tube is prepared cooperation fire resisting cement in three times.
8. the manufacture method as described in any claim in claim 1 to 7, also resistance to coating including the use of high temperature resistant cement
The iron pipe of sand is sealed in fire.
9. the manufacture method as described in any claim in claim 1 to 8, it also includes to sand outside the coating refractory of outside
The iron pipe outer application external coating.
10. the quickly method of measurement molten steel temperature and oxygen content, it is included described in any claim in claim 1 to 9
Manufacture method obtain molten steel oxygen measuring probe insertion molten steel in, to obtain molten steel temperature and oxygen content.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710841402.8A CN107817021A (en) | 2017-09-18 | 2017-09-18 | The manufacture method of molten steel oxygen measuring probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710841402.8A CN107817021A (en) | 2017-09-18 | 2017-09-18 | The manufacture method of molten steel oxygen measuring probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107817021A true CN107817021A (en) | 2018-03-20 |
Family
ID=61607692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710841402.8A Pending CN107817021A (en) | 2017-09-18 | 2017-09-18 | The manufacture method of molten steel oxygen measuring probe |
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| Country | Link |
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| CN (1) | CN107817021A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5520461A (en) * | 1994-03-02 | 1996-05-28 | Alliedsignal Inc. | Airtight thermocouple probe |
| WO2004042742A2 (en) * | 2002-10-30 | 2004-05-21 | The Penn State Research Foundation | Hydrothermal deposition of thin and adherent metal oxide coatings for high temperature corrosion protection |
| CN2819207Y (en) * | 2005-09-08 | 2006-09-20 | 陈涛 | Small composite multifunctional probe of molten liquid iron water |
| CN200981874Y (en) * | 2006-10-31 | 2007-11-28 | 连铸 | Revolving furnace throwing-falling type detecting probe |
| CN201522337U (en) * | 2009-10-29 | 2010-07-07 | 连铸 | Converter throwing-falling type wireless detecting probe |
| CN204679121U (en) * | 2015-06-16 | 2015-09-30 | 北京市平谷长城贸易公司 | Ladle furnace molten steel thermometric oxygen determination detecting, sampling composite probe |
| CN205506249U (en) * | 2016-03-16 | 2016-08-24 | 哲科尼尔（北京）科技有限公司 | Aluminium probe is surveyed to straight formula temperature transducer of test tube form and molten steel temperature measurement oxygen determination |
-
2017
- 2017-09-18 CN CN201710841402.8A patent/CN107817021A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5520461A (en) * | 1994-03-02 | 1996-05-28 | Alliedsignal Inc. | Airtight thermocouple probe |
| WO2004042742A2 (en) * | 2002-10-30 | 2004-05-21 | The Penn State Research Foundation | Hydrothermal deposition of thin and adherent metal oxide coatings for high temperature corrosion protection |
| CN2819207Y (en) * | 2005-09-08 | 2006-09-20 | 陈涛 | Small composite multifunctional probe of molten liquid iron water |
| CN200981874Y (en) * | 2006-10-31 | 2007-11-28 | 连铸 | Revolving furnace throwing-falling type detecting probe |
| CN201522337U (en) * | 2009-10-29 | 2010-07-07 | 连铸 | Converter throwing-falling type wireless detecting probe |
| CN204679121U (en) * | 2015-06-16 | 2015-09-30 | 北京市平谷长城贸易公司 | Ladle furnace molten steel thermometric oxygen determination detecting, sampling composite probe |
| CN205506249U (en) * | 2016-03-16 | 2016-08-24 | 哲科尼尔（北京）科技有限公司 | Aluminium probe is surveyed to straight formula temperature transducer of test tube form and molten steel temperature measurement oxygen determination |
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Application publication date: 20180320 |