CN106841208A - A kind of method for detecting bulky grain oxide inclusion content in steel - Google Patents
A kind of method for detecting bulky grain oxide inclusion content in steel Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 48
- 239000010959 steel Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 39
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 50
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 46
- 239000001301 oxygen Substances 0.000 claims abstract description 46
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 15
- 238000012360 testing method Methods 0.000 claims abstract description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 230000014509 gene expression Effects 0.000 claims description 2
- 238000010008 shearing Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- 238000005868 electrolysis reaction Methods 0.000 abstract description 6
- 238000007796 conventional method Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000011156 evaluation Methods 0.000 abstract description 2
- 238000003723 Smelting Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000002927 oxygen compounds Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3563—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solids; Preparation of samples therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
- G01N33/205—Metals in liquid state, e.g. molten metals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3563—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solids; Preparation of samples therefor
- G01N2021/3572—Preparation of samples, e.g. salt matrices
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
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Abstract
The present invention provides a kind of method for detecting bulky grain oxide inclusion content in steel, methods described is measured by the oxygen that the oxygen and dissolved oxygen form to existing in field trash form in steel are present, the oxygen content that form is present is mingled with oxide in representing institute's test specimens with the content of oxygen in the steel that the method for GB/T 11,261 2006 is determined, steel sample to be measured is judged：In a* b* wide long c high>The average content that 10 μm of bulky grain oxide is mingled with, and the fluctuation difference of total oxygen is determined with multiple point in sample to be tested characterize, the present invention can quickly, in accurate evaluation sample to be tested>The contents level that 10 μm of oxides are mingled with, compared to bulk sample electrolysis method, the method for the present invention greatly shorten the detection cycle of conventional method and bulky grain oxide is mingled with for detect it is more accurate.
Description
Technical field
The invention belongs to Ferrous Metallurgy clean steel production field, and in particular to one kind is for detecting bulky grain oxide in steel
It is mingled with the method for content.
Background technology
Large inclusionses all have significant effect to the cleanliness factor and end product quality of steel in steel.Research shows, greatly
Part cold-reduced sheet surface defect is relevant with field trash, and the presence of field trash also influences the fatigue life of steel.Bulky grain in steel
It is mingled with multi-source to be peeled off in the slag of casting process, secondary oxidation, resistance to material etc., predominantly large-sized oxide is mingled with.In the presence of
Non-metallic inclusion in steel, especially bulky grain non-metallic inclusion are easily produced in the follow-up operation of rolling around particle
Raw area of stress concentration, when field trash ambient stress exceedes the tensile strength of steel, matrix will be cracking, and micro-crack is adjoint
Rolling progressively extends and may finally develop into surface gross imperfection.Therefore, bulky grain non-metallic inclusion pair in quantitative forecast steel
It is most important in the smelting of clean steel.
The conventional method of Study on Steel Large Inclusions is mainly metallographic method and electrolysis.Metallographic method sample is small, sightingpiston
Product is limited, it is difficult to the content of accurate quantitative analysis large inclusionses；Electrolysis can be extracted and obtain field trash in sample, but electrolysis
Process field trash is easily corroded and lost by electrolyte, and in elutriation, reduction and screening process, field trash is also easily lost and is subject to
Outside contamination, thus it is quantitative inaccurate.
The content of the invention
In order to solve the above problems, the present invention provides a kind of side for detecting bulky grain oxide inclusion content in steel
Method, methods described is measured by the oxygen that the oxygen and dissolved oxygen form to existing in field trash form in steel are present, with GB/T
The content of oxygen is mingled with the oxygen content that form is present in representing institute's test specimens with oxide in the steel that the method for 11261-2006 is determined,
Judge steel sample to be measured：In a* b* wide long c high>The average content that 10 μm of bulky grain oxide is mingled with, and with many in sample to be tested
Individual point determines the fluctuation difference of total oxygen to characterize；
Further, the described method comprises the following steps；
Further, (1) strand sampling：In production is smelted, pail sample is taken at different operations or is taken in strand
Sample, and record the position of strand and length when this condition is produced；
(2) steel sample standard specimen is prepared：By steel sample roughing to be measured into 25mm*25mm*30mm standard specimen, and will
Standard specimen surface is polished to finish Ra more than 3.2 μm；
(3) oxygen content measuring point in selection standard sample:Cut from the surface in standard specimen length and width faceRod
Sample, successively every row 4 from left to right, from top to bottom each column 4, totally 16；
(4) the measuring point sample of different oxygen is prepared：WillRod sample car is madeRod sample,
Surface is polished to Ra more than 1.6 μm, shearing turns around, after afterbody by center section sample ultrasonic cleaner ether and third
Ketone is dried up after cleaning successively；
(5) total oxygen content is determined：Using the method for GB/T 11261-2006 steel sample is processed and measuring point in oxygen content
Measure；
(6) large inclusionses content in assessment sample:The minimum value T.Omin of total oxygen in 16 measuring points of sample is recorded,
The average value T.Oave of maximum of T .Omax and all measuring point values, in assessment sample>It is average that 10 μm of bulky grain oxides are mingled with
Content range is between (T.Omax-T.Oave)~(T.Omax-T.Omin) mg/kg；
Further, minimum standard specimen size to be measured is 25mm (length) * 25mm (width) * 30mm in the step (2)
The integral multiple of (height) or minimum standard specimen size to be measured；
Further, the maximum measured value of different measuring points oxygen content is T.O in the sample to be testedmax, minimum measured value is
T.Omin, average measured value T.OaveQuantitative expression is (T.Omax-T.Oave)~(T.Omax-T.Omin)mg/kg；
Further, for n times of integer standard specimen length and width and m times of integer standard specimen sample to be tested high, will can treat
Test specimens are decomposed into n2* m standard specimen, by n in sample to be tested2* in m standard specimen>10 μm of bulky grain oxides are mingled with and contain
Amount is respectively calculated, n2* the lower limit and higher limit in m standard specimen are in final sample to be tested>10 μm of bulky grain oxygen
Compound is mingled with content；
Beneficial effects of the present invention are as follows：
1) present invention can quickly, in accurate evaluation sample to be tested>The contents level that 10 μm of oxides are mingled with；It is conventionally used to
The bulk sample electrolysis method of large inclusionses content in detection steel, electrolysing period is typically more than 15 days, and electrolytic process solution pair
Field trash corrodes serious, eluriates and reduction process field trash can lose, and the field trash that actual quantification is obtained is far below actual water
Flat, compared to bulk sample electrolysis method, the method for the present invention greatly shortens the detection cycle of conventional method and to bulky grain oxide
What is be mingled with is more accurate for detecting；
2) present invention can be realized to smelting with the bulky grain oxide inclusion content in qualitative assessment smelting process molten steel
The tracking of Cheng Butong procedure-node large inclusionses contents, so as to predict the change of large inclusionses in different smelting procedure steel
Change, instruct the process optimization in clean steel production process；Conventional art lacks and effectively quantify bulky grain folder in smelting process molten steel
The effective means of debris content；
3) distribution that the present invention can be equally mingled with quantitative forecast strand diverse location bulky grain oxide, can be strand
Classification and quality judging provide foundation, reduction cause subsequent quality defective proportion because large inclusionses are exceeded.
Brief description of the drawings
Fig. 1 is that Plays sample total oxygen measuring point of the present invention chooses schematic diagram.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is explained in further detail.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, and
It is not used in the restriction present invention.Conversely, the present invention cover it is any be defined by the claims done in spirit and scope of the invention
Replacement, modification, equivalent method and scheme.Further, in order that the public has a better understanding to the present invention, below to this
It is detailed to describe some specific detail sections in the detailed description of invention.It is thin without these for a person skilled in the art
The description for saving part can also completely understand the present invention.
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, but not as a limitation of the invention.
Below most preferred embodiment is enumerated for of the invention：
The present invention provides a kind of method for detecting bulky grain oxide inclusion content in steel, and the technology of methods described is former
Reason is as follows：
(1) entire oxygen content in the steel is made up of two parts, and a part is the oxygen existed in field trash form, is denoted as T.OIt is mingled with；A part
It is the oxygen existed in dissolved oxygen form, is denoted as [O]Dissolving；The composition of total oxygen is represented by formula 1.
T.O=T.OIt is mingled with+[O]Dissolving(formula 1)
In formula 1, the content of oxygen, ppm in the steel that the method that T.O represents GB/T 11261-2006 is determined；T.OIt is mingled withRepresent
It is mingled with the oxygen content of form presence, ppm in institute's test specimens with oxide；[O]DissolvingRepresent the dissolved oxygen in steel sample, ppm.
(2) in steel<10 μm of field trash is relatively uniform in spatial distribution, in steel>10 μm of field trash divides in steel sample
Cloth is not fully uniform, and [O] of dissolved oxygen is represented in same sampleDissolvingThe no difference in part, therefore, judge that steel sample to be measured is (long
A* b* wide it is high c) in>The average content that 10 μm of bulky grain oxide is mingled with can determine total oxygen with multiple points in sample to be tested
Fluctuation difference is characterized.
The main object of the present invention be for detecting steel in>10 μm of bulky grain oxide inclusion content, specific implementation step
It is rapid as follows：
Step 1：In production is smelted, when such as running into improper smelting condition, pail can be taken by different operations
Sample is sampled in strand, and records the position of strand and length when this condition is produced.
Step 2：Steel sample to be measured is processed into the standard specimen of 25mm (length) * 25mm (width) * 30mm (height), by sample
Six surfaces polish smooth, more than 3.2 μm of surface smoothness Ra, and standard specimen six surface states of requirement are consistent.
Step 3：Cut from the surface in standard specimen length and width face using wire cutting machine toolRod sample, successively
Every row 4 from left to right, from top to bottom each column 4, totally 16；Spacing distance is 1mm between every sample；Sample from a left side to
The right side, from top to bottom number consecutively are A1~A4, B1~B4, C1~C4, D1~D4；
Step 4：By what is obtained after wire cuttingRod sample car is madeRod sample, rough surface
More than 3.2 μm of degree Ra；Carborundum gauze and deerskin are polished to Ra more than 1.6 μm successively under 800r/min rotating speeds.After polishing
Sample end is cut off with cutting nippers, 3min~7min is cleaned successively with ether and acetone in ultrasonic cleaner, use hot blast drying
After insert it is standby in drying box；
Step 5：The sample that will be handled well carries out the measure of total oxygen content by the method for GB/T 11261-2006 successively, no
With measuring point total oxygen content measured value from left to right, from top to bottom number consecutively be T.OA1~T.OA4, T.OB1~T.OB4,
T.OC1~T.OC4, T.OD1~T.OD4；
Step 6：The minimum value for choosing 16 measuring point total oxygen values of institute's sample is denoted as T.Omin, maximum is denoted as T.Omax, institute
The average value for having measuring point value is denoted as T.Oave；The average content scope that is mingled with of bulky grain oxide is in assessment sample to be tested
(T.Omax-T.Oave)~(T.Omax-T.Omin)ppm。
Fig. 1 is that Plays sample total oxygen measuring point of the present invention chooses schematic diagram, and 1 cuts where the length and width of sample to be tested in figure
Face, 2 is the sampling of total oxygen test point in sample to be tested.
Using the present invention for detecting smelting process sample in>The content that 10 μm of bulky grain oxide is mingled with, it is specific real
Apply step as follows：
Step 1：Using internal diameter 50mm, 150mm high pail sampler in Ultra-low carbon gapless atomic steel RH refining process
5min takes pail sample after aluminium deoxidation, cuts Fig. 1's from apart from pail sample top 60mm, the middle part between the 30mm of bottom
Standard specimen is used to assess the average content of large inclusionses in the procedure position steel, and six surfaces of standard specimen are beaten
It is ground to 3.2 μm of finish Ra.
Step 2：Cut from the surface in Fig. 1 sample length and width face using DK7732 types NC wirecut EDM machineRod sample, every row 4 from left to right successively, from top to bottom each column 4, totally 16；It is spaced between every sample
Distance is 1mm, and number consecutively is A1~A4, B1~B4, C1~C4, D1~D4 to sample from left to right, from top to bottom；
Step 3：By what is obtained after wire cuttingRod sample car is madeRod sample, rough surface
More than 3.2 μm of degree Ra；Carborundum gauze and deerskin are polished to Ra more than 1.6 μm successively under 800r/min rotating speeds.After polishing
Sample end is cut off with cutting nippers, 3min~7min is cleaned successively with ether and acetone in ultrasonic cleaner, use hot blast drying
It is put into standby in drying box；
Step 4：The sample that will be obtained in step 3 carries out the survey of total oxygen content by the method for GB/T 11261-2006 successively
It is fixed, the measured value such as table 1 of different measuring points total oxygen content.
The diverse location total oxygen record sheet of table 1/ppm
Step 5：Total oxygen measured value maximum is 82ppm in 16 measuring points of standard specimen, and minimum value is 38ppm, average value
It is 52.5ppm.In sample to be tested>The average content scope of 10 μm of bulky grain oxide inclusion is 29.5~44mg/kg.
Embodiment described above, simply one kind of the present invention more preferably specific embodiment, those skilled in the art
The usual variations and alternatives that member is carried out in the range of technical solution of the present invention all should be comprising within the scope of the present invention.
Claims (5)
1. a kind of method for detecting bulky grain oxide inclusion content in steel, it is characterised in that methods described is by steel
In the oxygen that exists of the oxygen that exists in field trash form and dissolved oxygen form measure, surveyed in the method for GB/T 11261-2006
The content of oxygen is mingled with the oxygen content that form is present in representing institute's test specimens with oxide in fixed steel, judges steel sample to be measured：A* long
In b* c high wide>The average content that 10 μm of bulky grain oxide is mingled with, and the ripple of total oxygen is determined with multiple points in sample to be tested
Moment value is characterized.
2. method according to claim 1, it is characterised in that the described method comprises the following steps：
（1）Strand is sampled：In production is smelted, pail sample is taken at different operations or in strand sampling, and record this
The position of strand and length when condition is produced；
（2）Prepare steel sample standard specimen：By steel sample roughing to be measured into 25mm*25mm*30mm standard specimen, and by standard
Specimen surface is polished to finish Ra more than 3.2 μm；
（3）Oxygen content measuring point in selection standard sample:The rod sample of 5mm*30mm is cut from the surface in standard specimen length and width face, according to
Secondary every row 4 from left to right, from top to bottom each column 4, totally 16；
（4）Prepare the measuring point sample of different oxygen：5mm*30mm rod sample cars are made the rod sample of 4mm*30mm, surface polishing
To more than 1.6 μm of Ra, shearing is turned around, center section sample ultrasonic cleaner ether and acetone is clear successively after afterbody
Dried up after washing；
（5）Determine total oxygen content：Using the method for GB/T 11261-2006 steel sample is processed and measuring point in oxygen content carry out
Measurement；
（6）Large inclusionses content in assessment sample:Record the minimum value T.O of total oxygen in 16 measuring points of samplemin, it is maximum
Value T.OmaxWith the average value T.O of all measuring point valuesave, in assessment sample>The average content model that 10 μm of bulky grain oxides are mingled with
It is (T.O to enclosemax-T.Oave)~ (T.Omax-T.Omin) between mg/kg.
3. method according to claim 2, it is characterised in that the step（2）Middle minimum standard specimen size to be measured is
25mm（It is long）*25mm（It is wide）*30mm（It is high）Or the integral multiple of minimum standard specimen size to be measured.
4. method according to claim 2, it is characterised in that the maximum survey of different measuring points oxygen content in the sample to be tested
It is T.Omax to be worth, and minimum measured value is T.Omin, and average measured value T.Oave quantitative expressions are (T.Omax-T.Oave)~ (T.Omax-
T.Omin) mg/kg。
5. method according to claim 3, it is characterised in that for n times of integer standard specimen length and width and m times of integer standard
Sample sample to be tested high, can be decomposed into n by sample to be tested2* m standard specimen, by n in sample to be tested2* in m standard specimen
>10 μm of bulky grain oxide inclusion contents are respectively calculated, n2* the lower limit and higher limit in m standard specimen are final
In sample to be tested>10 μm of bulky grain oxide inclusion contents.
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| CN201611226798.7A CN106841208A (en) | 2016-12-27 | 2016-12-27 | A kind of method for detecting bulky grain oxide inclusion content in steel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109014096A (en) * | 2018-05-25 | 2018-12-18 | 邯郸钢铁集团有限责任公司 | A kind of trace analysis method of steel Large Inclusions |
| CN110967236A (en) * | 2019-12-19 | 2020-04-07 | 中国航发哈尔滨轴承有限公司 | Preparation method of sample for measuring oxygen content in G13Cr4Mo4Ni4V steel |
| CN110987612A (en) * | 2019-11-06 | 2020-04-10 | 中天钢铁集团有限公司 | Method for evaluating anti-stripping performance of refractory material for silicon deoxidized steel in use process |
| CN111610305A (en) * | 2020-04-28 | 2020-09-01 | 北京科技大学 | Method for quantitatively evaluating crushing resistance and wear resistance of iron alloy for steelmaking by using rotary drum |
-
2016
- 2016-12-27 CN CN201611226798.7A patent/CN106841208A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 王敏等: "钢液中夹杂物粒径与全氧的关系", 《工程科学学报》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109014096A (en) * | 2018-05-25 | 2018-12-18 | 邯郸钢铁集团有限责任公司 | A kind of trace analysis method of steel Large Inclusions |
| CN110987612A (en) * | 2019-11-06 | 2020-04-10 | 中天钢铁集团有限公司 | Method for evaluating anti-stripping performance of refractory material for silicon deoxidized steel in use process |
| CN110987612B (en) * | 2019-11-06 | 2023-08-01 | 中天钢铁集团有限公司 | Method for evaluating anti-spalling performance of refractory material for silicon deoxidized steel in use process |
| CN110967236A (en) * | 2019-12-19 | 2020-04-07 | 中国航发哈尔滨轴承有限公司 | Preparation method of sample for measuring oxygen content in G13Cr4Mo4Ni4V steel |
| CN111610305A (en) * | 2020-04-28 | 2020-09-01 | 北京科技大学 | Method for quantitatively evaluating crushing resistance and wear resistance of iron alloy for steelmaking by using rotary drum |
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Application publication date: 20170613 |