CN107796666A - A kind of sampler and method of oxygen nitrogen hydrogen analyzer detection nitrogen content of molten steel - Google Patents
A kind of sampler and method of oxygen nitrogen hydrogen analyzer detection nitrogen content of molten steel Download PDFInfo
- Publication number
- CN107796666A CN107796666A CN201711116626.9A CN201711116626A CN107796666A CN 107796666 A CN107796666 A CN 107796666A CN 201711116626 A CN201711116626 A CN 201711116626A CN 107796666 A CN107796666 A CN 107796666A
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- China
- Prior art keywords
- glass container
- molten steel
- sampler
- oxygen
- sample
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N1/1409—Suction devices, e.g. pumps; Ejector devices adapted for sampling molten metals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
Abstract
A kind of sampler and method of oxygen nitrogen hydrogen analyzer detection nitrogen content of molten steel, belong to molten steel sample detection instrument and method and technology field, for the fast sampling in molten steel.Its technical scheme is：It includes glass container, aluminium foil, and glass container is long tube, glass container it is closed at both ends, be vacuum in the chamber of glass container, aluminium foil is attached on the inwall circumference of glass container, and the front end of glass container is conical nose.The present invention is in sampling, the conical nose of glass container is immersed in molten steel, conical nose melts under molten steel high temperature action, vacuum sucks molten steel in glass container in glass container, aluminium deoxidation reaction occurs for molten steel and the aluminium foil being attached on glass container inwall, the oxygen content in molten steel is reduced, the success rate of detection sample producing can be improved.The present invention is simple in construction, easy to operate, rapidly and efficiently, and qualified detection sample can be quickly produced in the case where oxygen content in steel is higher, improves detection efficiency.
Description
Technical field
The present invention relates to a kind of sampler of nitrogen content nitrogen hydrogen analyzer on-line checking molten steel suitable for oxygen and sampling
Method, belong to molten steel sample detection instrument and method and technology field.
Background technology
In nitrogen-containing steel smelting, the accurate control of nitrogen component is its core technology.Therefore, in smelting process and smelt knot
Shu Shi, the accurate detection of nitrogen content are the important means that auxiliary is smelted.Conventional element content is detected in production scene, it is general to use
Spark direct-reading spectrometer carries out composition detection to a diameter of 35mm sample, but for nitrogen, what most of steel mills were equipped with
Spark direct-reading spectrometer can not accurately detect higher nitrogen content.And when using oxygen nitrogen hydrogen analyzer detection nitrogen content, then need
Elongated sample, a diameter of 4 ~ 6mm or so are produced, length is about 50 ~ 100mm, it is desirable to which sample there must not be the defects of stomata.In reality
In the production process of border, intermediate frequency furnace smelting deoxidizing capacity is relatively low, for the higher steel grade of part nitrogen content, due to Composition Control
And strong deoxidier such as Al, Ca etc. can not be used to carry out deoxidation, oxygen content in steel is higher.In sampling process, in oxygen and molten steel
Carbon can react, and generate CO gas overflowings, and hollow or a large amount of stomatas often occurs in the sample produced, measurement nitrogen content deviation compared with
Greatly, next step operation can not be carried out, influences rhythm of production.Therefore, the present invention proposes a kind of online using oxygen nitrogen hydrogen detector
The method and sampler of accurate measurement nitrogen content.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of sampling dress of oxygen nitrogen hydrogen analyzer detection nitrogen content of molten steel
Put and method, this sampler and method can produce oxygen nitrogen hydrogen detection sample under conditions of oxygen content height, be oxygen nitrogen hydrogen
Qualified sample is quickly produced in analyzer detection, and nitrogen can not accurately be detected when smelting at present using spark direct-reading detector by, which solving, contains
The problem of amount.
Solve above-mentioned technical problem technical scheme be：
A kind of sampler of oxygen nitrogen hydrogen analyzer detection nitrogen content of molten steel, it includes glass container, aluminium foil, and glass container is length
Pipe, glass container it is closed at both ends, be vacuum in the chamber of glass container, aluminium foil is attached on the inwall circumference of glass container.
The sampler of above-mentioned oxygen nitrogen hydrogen analyzer detection nitrogen content of molten steel, the front end of the glass container is conical head
Portion.
The sampler of above-mentioned oxygen nitrogen hydrogen analyzer detection nitrogen content of molten steel, the length of the glass container for 250 ~
350mm, internal diameter are 4 ~ 6mm, and thickness is 1 ~ 2mm, and the aluminum foil thickness of glass container inwall attachment be 0.5 ~ 1mm, length for 100 ~
150mm。
A kind of sampling method using above-mentioned sampler, it takes following steps to carry out：
A. sampler is arranged on sampling gun before smelting；
B. part molten steel is taken out using sample spoon；
C. the conical nose of glass container is immersed in molten steel, the conical nose of glass container melts under molten steel high temperature action
Change, vacuum sucks molten steel in glass container with the pressure differential that molten steel is formed in glass container, molten steel in suction process with it is attached
The aluminium foil contact on glass container inwall, aluminium deoxidation reaction occurs, reduces the oxygen content in molten steel；
D. the process for drawing molten steel continues 2 ~ 3s, is taken out rapidly after molten steel is full of glass container, immediately quenching cooling；
E. after cooling down, glass container is broken into pieces, you can obtain sample to be detected, specimen surface, internal bubble-free or stomata, matter
It is qualified to measure, and falls sample top layer with lathe car, sample is sent into inspection center, and quick nitrogen content inspection is carried out using oxygen nitrogen hydrogen analyzer
Survey.
The beneficial effects of the invention are as follows：
The conical nose of glass container is immersed in molten steel, conical nose is under molten steel high temperature action by the present invention in sampling
Fusing, vacuum sucks molten steel in glass container with the pressure differential that molten steel is formed in glass container, molten steel in suction process with
The aluminium foil contact being attached on glass container inwall, occurs aluminium deoxidation reaction, the oxygen content in molten steel is reduced, to avoid cooling down
During stomata generation, can improve detection sample producing success rate.
The present invention be using in oxygen nitrogen hydrogen analyzer detection molten steel nitrogen content it is pioneering, creatively make use of aluminium foil and oxygen
The mechanism of generation deoxygenation eliminates the oxygen element in sample molten steel, reaches and solves long-term hardly possible with simplest apparatus and method
To solve the purpose of problem, in industry there is fabulous using effect.
The present invention is simple in construction, easy to operate, rapidly and efficiently, can quickly be produced in the case where oxygen content in steel is higher
Qualified detection sample, detection efficiency is improved, reduce the duration of heat and production cost, increase economic efficiency.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of the present invention；
Fig. 2 is the sectional view of the present invention.
Marked in figure as follows：Glass container 1, conical nose 2, aluminium foil 3.
Embodiment
The present invention is made up of glass container 1, conical nose 2, aluminium foil 3.
Shown in figure, glass container 1 is long tube, glass container 1 it is closed at both ends, be vacuum in the chamber of glass container 1,
The head of glass container 1 is taper, and conical nose 2 can make vacuum and steel in glass container 1 in molten steel is inserted with rapid melting
The pressure differential that liquid is formed sucks molten steel in glass container 1.
Being shown in figure, aluminium foil 3 is attached on the inwall circumference of glass container 1, for being reacted with the oxygen in molten steel, drop
Oxygen content in low molten steel.
The application method of the present invention is as follows：
Sampler is arranged on sampling gun before smelting.
When needing to sample in molten steel, part molten steel is taken out using sample spoon.
The conical nose 2 of glass container 1 is immersed in molten steel, conical nose 2 melts under molten steel high temperature action, glass
Vacuum sucks molten steel in glass container 1 with the pressure differential that molten steel is formed in container 1, and molten steel is in suction process with being attached to glass
Aluminium foil 3 on the inwall of glass container 1 contacts, and aluminium deoxidation reaction occurs, and reduces the oxygen content in molten steel, cooled in molten steel to avoid
The generation of bubble in journey, improve the success rate of detection sample producing.
The process for drawing molten steel continues 2 ~ 3s, is taken out rapidly after molten steel is full of glass container 1, immediately quenching cooling.
After cooling, glass container 1 is broken into pieces, you can obtain sample to be detected, specimen surface, internal bubble-free or gas
Hole, it is up-to-standard, fall sample top layer with lathe car, sample is sent to inspection center, quick nitrogen is carried out using oxygen nitrogen hydrogen analyzer
Content detection.
Embodiments of the invention are as follows：
Example 1：
A stove 316LN steel is smelted, it is 0. 015 to design nitrogen content in composition（Mass percent）.Before smelting, by sampler
On sampling gun.When smelting endpoint needs composition detection, outside certain safe distance, by the conical nose 2 of glass container 1
It is inserted into molten steel, the molten steel fusing conical nose 2 of high temperature, molten steel is pumped into glass container 1 using vacuum in glass container 1
Interior, with aluminium foil 3 deoxygenation occurs for oxygen in molten steel, causes detection to be lost so as to avoid in cooling procedure sample from bubble occur
It is accurate.Insertion process is lasting for about 3s, rapid to take out after molten steel is full of glass container 1, carries out water cooling.Knock out after glassy layer i.e.
It can obtain sample to be detected.Specimen surface, inside are up-to-standard without gas stomata.Detection will be sent to after specimen surface turnning and milling
Center, quick nitrogen content detection is carried out using oxygen nitrogen hydrogen analyzer.Testing result nitrogen content is 0.0153, with design composition more
It is close.
Example 2：
It is 0.50 to smelt a stove Cr18Mn18N without magnetic austenitic stainless steel, design composition nitrogen content.Sampler is pacified before smelting
On sampling gun, when smelting endpoint detects composition, the conical nose 2 of glass container 1 is inserted outside certain safe distance
Into molten steel, taken out after continuing 3s after insertion, water cooling.Surface glass layer is knocked, car falls sample top layer, you can obtain detection examination
Sample.Specimen surface and center portion pore-free, reach testing requirements.Inspection center is sent to be detected.Testing result is 0.496, with
Design composition is closer to.
Example 3：
A stove 317LN steel is smelted, it is 0.10 to design nitrogen content in composition.Device is arranged on sampling gun before smelting, during sampling,
The conical nose 2 of glass container 1 is inserted into molten steel outside certain safe distance, insertion process is taken out after continuing 2s, water cooling.
After knocking out glassy layer, car goes to sample top layer to obtain detecting sample, specimen surface and internal pore-free.Inspection center is sent to be examined
Survey, testing result 0.112, be closer to design composition.
Claims (4)
- A kind of 1. sampler of oxygen nitrogen hydrogen analyzer detection nitrogen content of molten steel, it is characterised in that：It includes glass container（1）、 Aluminium foil（3）, glass container（1）For long tube, glass container（1）Closed at both ends, glass container（1）Chamber in be vacuum, aluminium Paper tinsel（3）It is attached to glass container（1）Inwall circumference on.
- 2. the sampler of oxygen nitrogen hydrogen analyzer detection nitrogen content of molten steel according to claim 1, it is characterised in that：It is described Glass container（1）Front end be conical nose（2）.
- 3. the sampler of oxygen nitrogen hydrogen analyzer detection nitrogen content of molten steel according to claim 2, it is characterised in that：It is described Glass container（1）Length be 250 ~ 350mm, internal diameter is 4 ~ 6mm, and thickness is 1 ~ 2mm, glass container（1）The aluminium of inwall attachment Paper tinsel（3）Thickness is 0.5 ~ 1mm, and length is 100 ~ 150mm.
- A kind of 4. sampling method using above-mentioned sampler, it is characterised in that：It takes following steps to carry out：A. sampler is arranged on sampling gun before smelting；B. part molten steel is taken out using sample spoon；C. by glass container（1）Conical nose be immersed in molten steel, glass container（1）Conical nose（2）In molten steel high temperature Effect is lower to melt, glass container（1）Molten steel is sucked glass container by the pressure differential that interior vacuum is formed with molten steel（1）Interior, molten steel exists With being attached to glass container in suction process（1）Aluminium foil on inwall（3）Contact, aluminium deoxidation reaction occurs, reduces in molten steel Oxygen content；D. the process for drawing molten steel continues 2 ~ 3s, treats that molten steel is full of glass container（1）It is rapid afterwards to take out, quenching cooling immediately；E. after cooling down, glass container is broken into pieces（1）, you can obtain sample to be detected, specimen surface, internal bubble-free or gas Hole, it is up-to-standard, fall sample top layer with lathe car, sample is sent to inspection center, quick nitrogen is carried out using oxygen nitrogen hydrogen analyzer Content detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711116626.9A CN107796666A (en) | 2017-11-13 | 2017-11-13 | A kind of sampler and method of oxygen nitrogen hydrogen analyzer detection nitrogen content of molten steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711116626.9A CN107796666A (en) | 2017-11-13 | 2017-11-13 | A kind of sampler and method of oxygen nitrogen hydrogen analyzer detection nitrogen content of molten steel |
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| CN107796666A true CN107796666A (en) | 2018-03-13 |
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| CN201711116626.9A Pending CN107796666A (en) | 2017-11-13 | 2017-11-13 | A kind of sampler and method of oxygen nitrogen hydrogen analyzer detection nitrogen content of molten steel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111307765A (en) * | 2019-11-13 | 2020-06-19 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for detecting inclusions of austenitic stainless steel |
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| DE2529738A1 (en) * | 1975-07-01 | 1977-01-13 | Mannesmann Ag | Molten metal sample collector for metallurgical analyses - has evacuated glass probe filled by pressure of metal on collapsible wall |
| US4007641A (en) * | 1974-03-20 | 1977-02-15 | Robert C. Collins | Molten metal sampler with vacuum |
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| US4428245A (en) * | 1981-03-31 | 1984-01-31 | Nisshin Steel Company Limited | Apparatus for sampling molten metal |
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| CN201795942U (en) * | 2010-06-07 | 2011-04-13 | 鞍钢股份有限公司 | Molten steel immersed type vacuum fixed quick sampler for oxygen and nitrogen |
| CN105223135A (en) * | 2015-10-19 | 2016-01-06 | 洛阳鹏起实业有限公司 | The cleaned chimney filter of a kind of oxygen nitrogen hydrogen analyzer carrier gas, burner and oxygen nitrogen hydrogen analyzer |
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2017
- 2017-11-13 CN CN201711116626.9A patent/CN107796666A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1038278A (en) * | 1964-06-19 | 1966-08-10 | Berliner Quarz Schmelze G M B | A sampling tube for high temperature liquids particularly metal melts |
| US3534614A (en) * | 1967-10-07 | 1970-10-20 | Land Pyrometers Ltd | Sampling device for liquid metal |
| FR1582208A (en) * | 1968-07-25 | 1969-09-26 | ||
| DE2064228A1 (en) * | 1969-12-29 | 1971-07-08 | Electro Nite | |
| DE2035420A1 (en) * | 1970-07-16 | 1972-01-27 | Koninklijke Hoogovens En Staal | Molten metal sampler - of precision moulded glass evacuated and with capillary tube handle |
| US4007641A (en) * | 1974-03-20 | 1977-02-15 | Robert C. Collins | Molten metal sampler with vacuum |
| DE2529738A1 (en) * | 1975-07-01 | 1977-01-13 | Mannesmann Ag | Molten metal sample collector for metallurgical analyses - has evacuated glass probe filled by pressure of metal on collapsible wall |
| GB2040750A (en) * | 1978-11-30 | 1980-09-03 | Minas Gerais Siderurg | Molten metal sampler |
| US4428245A (en) * | 1981-03-31 | 1984-01-31 | Nisshin Steel Company Limited | Apparatus for sampling molten metal |
| CN86106438A (en) * | 1986-09-19 | 1988-03-30 | 第一重型机器厂 | Molten steel soak-in type vacuum fixed hydrogen high-speed sampler |
| EP0316101A2 (en) * | 1987-11-07 | 1989-05-17 | Foseco International Limited | Device for sampling molten metal |
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| CN201795942U (en) * | 2010-06-07 | 2011-04-13 | 鞍钢股份有限公司 | Molten steel immersed type vacuum fixed quick sampler for oxygen and nitrogen |
| CN105223135A (en) * | 2015-10-19 | 2016-01-06 | 洛阳鹏起实业有限公司 | The cleaned chimney filter of a kind of oxygen nitrogen hydrogen analyzer carrier gas, burner and oxygen nitrogen hydrogen analyzer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111307765A (en) * | 2019-11-13 | 2020-06-19 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for detecting inclusions of austenitic stainless steel |
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