CN110118802A - Oxygen and nitrogen content detection method in a kind of steel - Google Patents
Oxygen and nitrogen content detection method in a kind of steel Download PDFInfo
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- CN110118802A CN110118802A CN201910498078.3A CN201910498078A CN110118802A CN 110118802 A CN110118802 A CN 110118802A CN 201910498078 A CN201910498078 A CN 201910498078A CN 110118802 A CN110118802 A CN 110118802A
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- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/22—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
- G01N25/28—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures the rise in temperature of the gases resulting from combustion being measured directly
- G01N25/38—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures the rise in temperature of the gases resulting from combustion being measured directly using the melting or combustion of a solid
- G01N25/385—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures the rise in temperature of the gases resulting from combustion being measured directly using the melting or combustion of a solid for investigating the composition of gas mixtures
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Abstract
The present invention relates to sintering technology fields, and disclose oxygen and nitrogen content detection method in a kind of steel, it is characterized in that, the following steps are included: 1) choose steel raw material to be measured, clamping is fixed in steel raw material, sample is cut using water cooling cutting machine or equivalent means again, sample smart car is made spare after appropriately sized sample, three pieces or five pieces of samples to be tested are cut on same raw material；2) by step 1), ready sample is further processed, and by file or dry sanding paper, removes the rusty stain and oxide layer of exterior surface.Oxygen and nitrogen content detection method in the steel, pass through file or dry sanding paper, remove the rusty stain and oxide layer of exterior surface, avoid influencing the data of follow-up test, the measuring accuracy and accuracy of this method can be effectively improved, sample is cut using water cooling cutting machine or equivalent means, the phenomenon that high temperature impacts the oxygen and nitrogen content inside steel when avoiding cutting, and water cooling cutting is more accurate and stablizes.
Description
Technical field
The present invention relates to sintering technology field, oxygen and nitrogen content detection method in specially a kind of steel.
Background technique
Steel alloy has high intensity and through hardening performance and a good comprehensive mechanical performance, the high hardness in surface, wear-resisting
Property, and center portion Qiang Erren, be widely used in aviation be hit with strong wear, friction and bear combined stress each type gear,
The parts such as cam, the influence of oxygen, nitrogen to material property is different in steel alloy, has dissolved oxygen in steel alloy, certain in oxygen and steel
A little elements form oxide and are mingled with, and can cause hot-short harm, and nitrogen can be such that steel strengthen, but with nitrogen content in steel alloy
Increase, increase steel alloy timeliness tendency and cold brittleness, oxygen, nitrogen content are that have very much in strict control steel alloy in summary
Meaning, therefore many aeronautical products compare strict requirements to oxygen, nitrogen content proposition in steel alloy now, for this purpose, accurate survey
Determine that trace oxygen in steel alloy, the content of nitrogen are most important, and the analysis of oxygen content generallys use PULSE HEATING INFRARED in general material
Absorption process uses Thermal Conductivity method for the measurement of nitrogen content, and this method has the characteristics that accurately and rapidly.
But there is presently no the specific standards using trace oxygen, nitrogen content in the method detection steel alloy, Chinese patent CN
In 106525757 A, a kind of method for measuring trace oxygen in steel alloy, nitrogen is proposed, which improves measurement result
Accuracy, solve the measurement problem of trace oxygen in steel alloy, nitrogen content, due in steel alloy trace oxygen content standard requirement
Less than 0.0020%, nitrogen content standard requirements less than 0.01%, guarantee there is low and stable blank and ensure that oxygen, nitrogen are released completely
Put particularly important, but this method, in measurement, operation is extremely inconvenient, and user when testing, is easy to appear test knot
The phenomenon of fruit inaccuracy, so oxygen and nitrogen content detection method is proposed in a kind of steel to solve the problems, such as to propose among the above.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides oxygen and nitrogen content detection method in a kind of steel, have it is easy to operate,
And test result it is accurate the advantages that, solve in measurement, operation is extremely inconvenient, and user when testing, is easy to appear
The problem of phenomenon of test result inaccuracy.
(2) technical solution
To realize that aforesaid operations are simple, and the accurate purpose of test result, the invention provides the following technical scheme:
Oxygen and nitrogen content detection method in a kind of steel, which comprises the following steps:
1) steel raw material to be measured is chosen, clamping is fixed in steel raw material, then cut using water cooling cutting machine or equivalent means
Sample, sample smart car is made spare after appropriately sized sample, and three pieces or five pieces of samples to be tested are cut on same raw material；
2) by step 1), ready sample is further processed, and by file or dry sanding paper, removes the rust of exterior surface
Mark and oxide layer avoid the data for influencing follow-up test, then are in size appropriate by sample shear by wire nipper, simultaneously will
Classification is marked in sample material, avoids mixing up, and after being cleaned with ether or acetone, is dried for standby at low temperature；
3) it will accurately debug oxygen-nitrogen analyzer, empty crucible will be put into inside oxygen-nitrogen analyzer, while make oxygen nitrogen point
Analyzer enters working condition, and after duration after testing, the oxygen and nitrogen content average measurement of empty pyrographite set crucible be should be less than
0.00005%, avoid crucible from influencing the data precision when detecting；
4) in the oxygen-nitrogen analyzer into step 3), inside is put into oxygen and nitrogen content standard substance in steel, is detected, such as oxygen
Blood urea/nitrogen analyzer display numerical value is inside standard figures, and static two make three hours, are carrying out using if not in standard figures
Portion then needs to be debugged or replaced oxygen-nitrogen analyzer, be detected；
5) weigh appropriate step 2) in sample, sample is individually put into inside sky crucible, then crucible is sent into oxygen nitrogen point
It is detected inside analyzer, obtains oxygen-nitrogen analyzer to the numerical value of sample detection, and counted, show that oxygen nitrogen contains inside steel
Whether amount is qualified.
Preferably, the cylinder that length is greater than 30mm should be made in sample size in the step 1), then by cylinder homogeneous shear
At three parts or five parts of samples.
Preferably, oxygen and nitrogen content standard substance in steel in the step 4), oxygen, nitrogen content standard substance are the U.S. in steel
LECO501-991, oxygen content are 0.0013% ± 0.0003%, and nitrogen content is 0.0037% ± 0.0002%.
Preferably, it after obtaining data in the step 5), is counted, if any oxygen inside one or more steel
Nitrogen content is unqualified, then the steel are unqualified.
(3) beneficial effect
Compared with prior art, the present invention provides oxygen and nitrogen content detection method in a kind of steel, have following
The utility model has the advantages that
1, oxygen and nitrogen content detection method in the steel removes the rusty stain and oxide layer of exterior surface by file or dry sanding paper,
The data for avoiding influencing follow-up test, can effectively improve the measuring accuracy and accuracy of this method, using water cooling cutting machine or
The phenomenon that equivalent means cut sample, and high temperature impacts the oxygen and nitrogen content inside steel when avoiding cutting, and water cooling is cut
More accurate and stabilization is cut to be dried for standby, avoided when waiting to be detected at low temperature after ether or acetone are cleaned, it is empty
The phenomenon that oxygen in gas impacts sample to be tested, the step effectively increase the accuracy of equipment.
2, oxygen and nitrogen content detection method in the steel, the cylinder that length is greater than 30mm should be made in sample size in step 1), then
By cylinder homogeneous shear at three parts or five parts of samples, and after obtaining data in step 5), counted, if any one or one
Oxygen and nitrogen content is unqualified inside the above steel, then the steel are unqualified, can effectively improve the accuracy of equipment, avoid steel
In process of production, sample is individually put into inside sky crucible by the non-uniform phenomenon of oxygen and nitrogen content, then crucible is sent into oxygen nitrogen point
It is detected inside analyzer, obtains oxygen-nitrogen analyzer to the numerical value of sample detection, and counted, show that oxygen nitrogen contains inside steel
Whether amount is qualified, and crucible can effectively be avoided to influence the preparatory of data test result, solves in measurement, operation is extremely not
Just, user when testing, the problem of being easy to appear the phenomenon of test result inaccuracy.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution in the embodiment of the present invention is clearly and completely retouched
It states, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Oxygen and nitrogen content detection method in a kind of steel, which comprises the following steps:
1) steel raw material to be measured is chosen, clamping is fixed in steel raw material, then cut using water cooling cutting machine or equivalent means
Sample, sample smart car is made spare after appropriately sized sample, and three pieces or five pieces of samples to be tested are cut on same raw material, are walked
It is rapid 1) in sample size the cylinder that length is greater than 30mm should be made, then by cylinder homogeneous shear at three parts or five parts of samples；
2) by step 1), ready sample is further processed, and by file or dry sanding paper, removes the rust of exterior surface
Mark and oxide layer avoid the data for influencing follow-up test, then are in size appropriate by sample shear by wire nipper, simultaneously will
Classification is marked in sample material, avoids mixing up, and after being cleaned with ether or acetone, is dried for standby at low temperature；
3) it will accurately debug oxygen-nitrogen analyzer, empty crucible will be put into inside oxygen-nitrogen analyzer, while make oxygen nitrogen point
Analyzer enters working condition, and after duration after testing, the oxygen and nitrogen content average measurement of empty pyrographite set crucible be should be less than
0.00005%, avoid crucible from influencing the data precision when detecting；
4) in the oxygen-nitrogen analyzer into step 3), inside is put into oxygen and nitrogen content standard substance in steel, and oxygen nitrogen contains in middle steel
Standard substance is measured, oxygen, nitrogen content standard substance are U.S. LECO501-991 in steel, and oxygen content is 0.0013% ± 0.0003%,
Nitrogen content is 0.0037% ± 0.0002%, is detected, as oxygen-nitrogen analyzer show numerical value inside standard figures, and it is static
Two system three hours, carry out using, if not inside standard figures, then needed to be debugged or replaced oxygen-nitrogen analyzer, progress
Detection；
5) weigh appropriate step 2) in sample, sample is individually put into inside sky crucible, then crucible is sent into oxygen nitrogen point
It is detected inside analyzer, obtains oxygen-nitrogen analyzer to the numerical value of sample detection, and counted, show that oxygen nitrogen contains inside steel
Whether amount is qualified, is counted, and unqualified if any oxygen and nitrogen content inside one or more steel, then the steel are unqualified.
The beneficial effects of the present invention are: oxygen and nitrogen content detection method in the steel removes appearance by file or dry sanding paper
The rusty stain and oxide layer in face avoid the data for influencing follow-up test, can effectively improve the measuring accuracy and accuracy of this method,
Sample is cut using water cooling cutting machine or equivalent means, high temperature impacts the oxygen and nitrogen content inside steel when avoiding cutting
The phenomenon that, and water cooling cuts more accurate and stabilization and is dried for standby, avoids at low temperature after ether or acetone are cleaned
When waiting to be detected, the phenomenon that oxygen in air impacts sample to be tested, which effectively increases the accurate of equipment
Property.
Also, oxygen and nitrogen content detection method in the steel, the cylinder that length is greater than 30mm should be made in sample size in step 1),
Again by cylinder homogeneous shear at three parts or five parts of samples, and after obtaining data in step 5), counted, if any one or one
Oxygen and nitrogen content is unqualified inside a above steel, then the steel are unqualified, can effectively improve the accuracy of equipment, avoid steel
In process of production, sample is individually put into inside sky crucible material by the non-uniform phenomenon of oxygen and nitrogen content, then crucible is sent into oxygen nitrogen
It is detected inside analyzer, obtains oxygen-nitrogen analyzer to the numerical value of sample detection, and counted, obtain oxygen nitrogen inside steel
Whether content is qualified, and crucible can effectively be avoided to influence the preparatory of data test result, solves in measurement, operation is extremely
Inconvenience, user when testing, the problem of being easy to appear the phenomenon of test result inaccuracy.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. oxygen and nitrogen content detection method in a kind of steel, which comprises the following steps:
1) steel raw material to be measured is chosen, clamping is fixed in steel raw material, then cut sample using water cooling cutting machine or equivalent means,
Sample smart car is made spare after appropriately sized sample, three pieces or five pieces of samples to be tested are cut on same raw material；
2) by step 1), ready sample is further processed, by file or dry sanding paper, go exterior surface rusty stain and
Oxide layer avoids the data for influencing follow-up test, then is in size appropriate by sample shear by wire nipper, while by sample
Classification is marked in raw material, avoids mixing up, and after being cleaned with ether or acetone, is dried for standby at low temperature；
3) it will accurately debug oxygen-nitrogen analyzer, empty crucible will be put into inside oxygen-nitrogen analyzer, while making oxygen-nitrogen analyzer
Into working condition, after duration after testing, the oxygen and nitrogen content average measurement of empty pyrographite set crucible be should be less than
0.00005%, avoid crucible from influencing the data precision when detecting；
4) in the oxygen-nitrogen analyzer into step 3), inside is put into oxygen and nitrogen content standard substance in steel, is detected, such as oxygen nitrogen point
Analyzer shows that numerical value inside standard figures, and static two systems three hours, is being carried out using if not inside standard figures, then
Oxygen-nitrogen analyzer need to be debugged or be replaced, is detected；
5) weigh appropriate step 2) in sample, sample is individually put into inside sky crucible, then crucible is sent into oxygen-nitrogen analyzer
Inside is detected, and obtains oxygen-nitrogen analyzer to the numerical value of sample detection, and counted, and show that oxygen and nitrogen content is inside steel
No qualification.
2. oxygen and nitrogen content detection method in a kind of steel according to claim 1, which is characterized in that sample in the step 1)
The cylinder that length is greater than 30mm should be made in size, then by cylinder homogeneous shear at three parts or five parts of samples.
3. oxygen and nitrogen content detection method in a kind of steel according to claim 1, which is characterized in that in the step 4) in steel
Oxygen and nitrogen content standard substance, oxygen, nitrogen content standard substance are U.S. LECO501-991 in steel, oxygen content is 0.0013% ±
0.0003%, nitrogen content is 0.0037% ± 0.0002%.
4. oxygen and nitrogen content detection method in a kind of steel according to claim 1, which is characterized in that obtained in the step 5)
It after data, is counted, unqualified if any oxygen and nitrogen content inside one or more steel, then the steel are unqualified.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910498078.3A CN110118802A (en) | 2019-06-10 | 2019-06-10 | Oxygen and nitrogen content detection method in a kind of steel |
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| CN201910498078.3A CN110118802A (en) | 2019-06-10 | 2019-06-10 | Oxygen and nitrogen content detection method in a kind of steel |
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Cited By (2)
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| 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 |
| CN111474024A (en) * | 2020-04-09 | 2020-07-31 | 北京首钢股份有限公司 | Rapid sample preparation method for low-oxygen and low-nitrogen analysis sample in front of steel-making furnace and product thereof |
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Cited By (2)
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| 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 |
| CN111474024A (en) * | 2020-04-09 | 2020-07-31 | 北京首钢股份有限公司 | Rapid sample preparation method for low-oxygen and low-nitrogen analysis sample in front of steel-making furnace and product thereof |
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