CN112098393A - Method for measuring multiple elements of HR-1 direct-reading spectrum of hydrogen-resistant steel pipe - Google Patents
Method for measuring multiple elements of HR-1 direct-reading spectrum of hydrogen-resistant steel pipe Download PDFInfo
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- CN112098393A CN112098393A CN202010961512.XA CN202010961512A CN112098393A CN 112098393 A CN112098393 A CN 112098393A CN 202010961512 A CN202010961512 A CN 202010961512A CN 112098393 A CN112098393 A CN 112098393A
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 64
- 239000001257 hydrogen Substances 0.000 title claims abstract description 64
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 63
- 239000010959 steel Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000001228 spectrum Methods 0.000 title claims abstract description 25
- 238000004458 analytical method Methods 0.000 claims abstract description 29
- 238000005259 measurement Methods 0.000 claims abstract description 21
- 101100524580 Arabidopsis thaliana RH12 gene Proteins 0.000 claims abstract description 14
- 101100087409 Arabidopsis thaliana RH18 gene Proteins 0.000 claims abstract description 14
- 101150010777 SUS5 gene Proteins 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims abstract description 11
- 101100468591 Arabidopsis thaliana RH31 gene Proteins 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims abstract description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 239000011651 chromium Substances 0.000 claims description 4
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims description 4
- 239000011574 phosphorus Substances 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 239000011593 sulfur Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 abstract description 7
- 238000012360 testing method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 230000005284 excitation Effects 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010187 selection method Methods 0.000 description 3
- 238000009614 chemical analysis method Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 238000007704 wet chemistry method Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 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
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/66—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light electrically excited, e.g. electroluminescence
- G01N21/67—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light electrically excited, e.g. electroluminescence using electric arcs or discharges
-
- 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
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- 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
- G01N1/32—Polishing; Etching
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/12—Circuits of general importance; Signal processing
- G01N2201/127—Calibration; base line adjustment; drift compensation
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention discloses a multi-element determination method for HR-1 direct-reading spectrum of a hydrogen-resistant steel pipe, which comprises the following steps: s1, processing the hydrogen-resistant steel pipe HR-1 of the sample to be measured into a measuring section; s2, pressing the measuring section obtained in the step S1 into a sheet sample; s3, processing standard samples RE12, RN19, SUS5, RH12, RH18, RH31 and hydrogen-resistant steel to be smooth in surface; s4, analyzing the standard samples RE12, RN19, SUS5, RH12, RH18 and RH31 one by one on a direct-reading spectrometer, and exciting 3 stable points at least for each standard sample to obtain a stable curve calibrated by the high and low standard samples; s5, analyzing the standard sample hydrogen-resistant steel on a direct-reading spectrometer, exciting at least 3 stable points, and completing drift calibration of a stable curve; and S6, analyzing on a direct-reading spectrometer, and analyzing the sheet sample obtained in the step S2 by using the analysis curve obtained in the step S5 to obtain the content of each element in the sheet sample. The determination method can simultaneously measure various elements in the hydrogen-resistant steel pipe HR-1, and solves the problem that the existing wet chemical measurement only can be used for element-by-element analysis.
Description
Technical Field
The invention relates to the technical field of alloy detection, in particular to a multi-element determination method of HR-1 direct-reading spectrum of a hydrogen-resistant steel pipe.
Background
The hydrogen-resistant steel has excellent hydrogen damage resistance and good comprehensive mechanical properties and is widely applied to engineering systems of petrochemical industry, petroleum and natural gas, nuclear, aviation, aerospace and the like, and because the components of the hydrogen-resistant steel have important influence on the tissue structure and the performance of the material, the components of the hydrogen-resistant steel must be accurately measured before the hydrogen-resistant steel is used so as to ensure the product quality.
The phi 3mm multiplied by 1mm and the phi 4mm multiplied by 1mm materials in the HR-1 hydrogen-resistant steel pipe can only be analyzed one by adopting the traditional wet chemistry due to the limitation of the material specification, and although the chemical method of the wet chemistry analysis method is accurate, the problems of complex operation steps, low analysis speed and efficiency, environmental pollution, high labor intensity, high requirement on the operation skill of an operator, large contact of a large amount of toxic and harmful chemical reagents by an analyst in the analysis process and the like exist, and the requirement of rapid detection cannot be met.
Disclosure of Invention
The invention aims to provide a multi-element determination method for HR-1 direct-reading spectrum of a hydrogen-resistant steel pipe, which can simultaneously measure multiple elements in the HR-1 of the hydrogen-resistant steel pipe and solve the problem that the existing wet chemical measurement only can be used for analyzing the elements one by one.
The invention is realized by the following technical scheme:
the method for measuring multiple elements of the HR-1 direct-reading spectrum of the hydrogen-resistant steel pipe comprises the following steps:
s1, processing the hydrogen-resistant steel pipe HR-1 of the sample to be measured into a measuring section;
s2, pressing the measuring section obtained in the step S1 into a sheet sample;
s3, processing standard samples RE12, RN19, SUS5, RH12, RH18, RH31 and hydrogen-resistant steel to be smooth in surface;
s4, analyzing the standard samples RE12, RN19, SUS5, RH12, RH18 and RH31 one by one on a direct-reading spectrometer, and exciting 3 stable points at least for each standard sample to obtain a stable curve calibrated by the high and low standard samples;
the specific operation is as follows:
the selection method is switched to Fe-00 on the direct-reading spectrometer, analysis is carried out one by one according to shift + F7, RE12, RN19, SUS5, RH12, RH18 and RH31, each sample is excited at least by 3 stable points, the last standard sample is excited, automatic operation is carried out after storage, and the point Accept is obtained.
S5, analyzing the standard sample hydrogen-resistant steel on a direct-reading spectrometer, and exciting at least 3 stable points to finish drift calibration of a stable curve;
the specific operation is as follows:
selecting a 'Fe-30-316L' channel as an analysis program according to F10, selecting a proper hydrogen-resistant steel standard sample as a type standardization correction sample, and exciting at least 3 stable points to store, wherein the point is 'Accept';
and S6, analyzing on a direct-reading spectrometer, analyzing the sheet sample obtained in the step S2 by adopting the analysis curve obtained in the step S5 to obtain the content of each element in the sheet sample, exciting and measuring each sample for 3 times, taking the average value of the values as an analysis result, expressing the analysis result by mass fraction, and trimming the analysis result to two effective numerical values after decimal point according to the numerical trimming rule specified in GB/T8170.
RE12, RN19, SUS5, RH12, RH18 and RH31 are high and low standard samples.
The method is suitable for simultaneously measuring various elements of the hydrogen-resistant steel pipe HR-1 by adopting spark source direct-reading spectrum, and is particularly suitable for simultaneously measuring various elements of the hydrogen-resistant steel pipe HR-1 with small pipe diameter by adopting spark source direct-reading spectrum.
The small pipe diameter specifically refers to a hydrogen-resistant steel pipe HR-1 with the specification of less than phi 4mm multiplied by 1 mm.
The invention processes the hydrogen-resistant steel pipe aiming at the phi 3mm multiplied by 1mm and the phi 4mm multiplied by 1mm in HR-1 hydrogen-resistant steel pipe so as to meet the analysis and test conditions of a spark source direct-reading spectrometer, then on the basis of finishing the calibration of high and low standard curves and the drift calibration, the processed sample is excited by an excitation system to emit light and is dispersed into a spectrum by a light splitting system, the selected inner marked line and the analysis line are subjected to photoelectric conversion and measurement by a photoelectric conversion system and a measurement system, the method is simple and easy to operate, has high accuracy, effectively realizes simultaneous determination of multiple elements such as carbon, silicon, manganese, phosphorus, sulfur, chromium, nickel, molybdenum and the like in the small-diameter HR-1 hydrogen-resistant steel pipe, and greatly improves the detection efficiency of the chemical components of the small-diameter HR-1 hydrogen-resistant steel pipe.
Further, specifications of the hydrogen-resistant steel pipe HR-1 include Φ 3mm × 1mm and Φ 4mm × 1 mm.
Further, the length of the measuring section in step S1 is 20mm to 25 mm.
Further, the width of the transverse surface of the sheet sample in step S2 was 6mm or more.
Further, the pressing of the measurement section in step S2 employs a ZHY-401A/601A press machine.
Further, the specific method for pressing the measuring section in step S2 is as follows:
s21, adjusting an electric contact to set the upper limit of a pressure gauge to be 40 tons;
and S22, setting the pressure maintaining time to be 45-60S.
Further, the number of the measurement sections of each sample to be measured in step S1 is equal to or greater than 3.
Further, in step S3, the sample processing is performed by a spectral sample grinding machine.
Further, when the sample is ground in step S3, a new grinding wheel needs to be replaced, and the processing should be performed in order of RE12, RN19, SUS5, RH12, RH18, and RH 31.
Further, elements measured for the hydrogen-resistant steel pipe HR-1 include carbon, silicon, manganese, phosphorus, sulfur, chromium, nickel and molybdenum.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the invention processes the hydrogen-resistant steel pipe to meet the analysis and test conditions of the spark source direct-reading spectrometer, then excites the processed sample to emit light by an excitation system, disperses the light into a spectrum by a light splitting system, carries out photoelectric conversion and measurement on the selected inner marked line and the analysis line by a photoelectric conversion system and a measurement system, and calculates the content of each element in the analysis sample according to an analysis curve made by a corresponding standard sample.
2. The method is simple and easy to operate, has high accuracy, effectively realizes simultaneous determination of multiple elements such as carbon, silicon, manganese, phosphorus, sulfur, chromium, nickel, molybdenum and the like in the small-diameter HR-1 hydrogen-resistant steel pipe, and greatly improves the detection efficiency of the chemical components of the small-diameter HR-1 hydrogen-resistant steel pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not used as limitations of the present invention.
Example 1:
1 materials and specifications
Phi 3mm x 1mm HR-1 hydrogen-resistant steel pipe
2 instruments and apparatus
2.1SPECTROLAB M10 photoelectric direct-reading spectrometer
2.2ZHY-401A sample press
2.3GM-4 grinding wheel spectrum sample grinding machine
3 analytical step
3.1 cutting the hydrogen-resistant steel pipe into small sections of 20-25 mm by using a vice, wherein each sample is not less than 6 small sections;
3.2 wrapping the single small section obtained in the step 3.1 by using clean white paper, placing the small section in a ZHY-401A/601A sample press, and flattening the sample to be thinnest according to set parameters; the width of the transverse surface of the sample after being flattened is not less than 6 mm.
3.3 processing RE12, RN19, SUS5, RH12, RH18, RH31 and a hydrogen-resistant steel standard sample to be smooth in surface by a spectrum sample grinding machine;
3.4 switching the selection method to "Fe-00" on the direct-reading spectrometer, analyzing one by one according to "shift + F7", according to "RE 12, RN19, SUS5, RH12, RH18, RH 31", exciting at least 3 stable points for each sample, finishing the excitation of the last standard sample, automatically calculating after storing, and marking "Accept";
3.5 according to F10, selecting "Fe-30-316L" channel as analysis program, selecting 316L (YSBS 20313-2-2006) as type standardization correction sample, exciting at least 3 stable points, storing, and point "Accept";
3.6 according to F8, a standardized standard of the type used in step 3.5 is selected, the samples are crushed in analysis step 3.2, the measurements are triggered 3 times per sample, and the average value is taken as the result of the analysis.
3.7 the analysis result is expressed by mass fraction, and the analysis result is reduced to two effective numerical values after decimal point according to the digital reduction rule specified by GB/T8170.
The test pieces of phi 3mm x 1mm HR-1 hydrogen-resistant steel pipe of example 1 were tested 6 times according to the above experimental protocol to obtain 6 measurement values, and the average value and the standard deviation and relative standard deviation of the measurement values were calculated as shown in table 1.
Table 1 precision experimental results (n ═ 6)
From Table 1, the standard deviation (sigma) and the relative standard deviation (RSD/%) of the hydrogen-resistant steel tube sample applied to the phi 3mm multiplied by 1mm HR-1 by the patent are small, and the requirement of analysis precision is met.
According to the experimental scheme, the phi 3mm multiplied by 1mm HR-1 hydrogen-resistant steel pipe sample of the embodiment 1 is compared and verified with the test result of the chemical method, and the comparison result is shown in the table 2.
TABLE 2 comparison of sample analysis
As can be seen from Table 2, the determination results obtained by applying the method to the phi 3mm multiplied by 1mm HR-1 hydrogen-resistant steel pipe sample are well consistent with the results obtained by the traditional chemical analysis method, which indicates that the method is applicable to the phi 3mm multiplied by 1mm HR-1 hydrogen-resistant steel pipe sample.
Example 2:
1 materials and specifications
Phi 4mm x 1mm HR-1 hydrogen-resistant steel pipe
2 instruments and apparatus
2.1SPECTROLAB M10 photoelectric direct-reading spectrometer
2.2ZHY-401A sample press
2.3GM-4 grinding wheel spectrum sample grinding machine
3 analytical step
3.1 cutting the hydrogen-resistant steel pipe into small sections of 20-25 mm by using a vice, wherein each sample is not less than 6 small sections;
3.2 wrapping the single small section obtained in the step 3.1 by using clean white paper, placing the small section in a ZHY-401A/601A sample press, and flattening the sample to be thinnest according to set parameters; the width of the transverse surface of the sample after being flattened is not less than 6 mm.
3.3 processing RE12, RN19, SUS5, RH12, RH18, RH31 and a hydrogen-resistant steel standard sample to be smooth in surface by a spectrum sample grinding machine;
3.4 switching the selection method to "Fe-00" on the direct-reading spectrometer, analyzing one by one according to "shift + F7", according to "RE 12, RN19, SUS5, RH12, RH18, RH 31", exciting at least 3 stable points for each sample, finishing the excitation of the last standard sample, automatically calculating after storing, and marking "Accept";
3.5 according to F10, selecting "Fe-30-316L" channel as analysis program, selecting 316L (YSBS 20313-2-2006) as type standardization correction sample, exciting at least 3 stable points, storing, and point "Accept";
3.6 according to F8, a standardized standard of the type used in step 3.5 is selected, the samples are crushed in analysis step 3.2, the measurements are triggered 3 times per sample, and the average value is taken as the result of the analysis.
3.7 the analysis result is expressed by mass fraction, and the analysis result is reduced to two effective numerical values after decimal point according to the digital reduction rule specified by GB/T8170.
The test pieces of phi 4mm x 1mm HR-1 hydrogen-resistant steel pipe of example 1 were tested 6 times according to the above experimental protocol to obtain 6 measurement values, and the average value and the standard deviation and relative standard deviation of the measurement values were calculated as shown in table 3.
Table 3 precision experimental results (n ═ 6)
As can be seen from Table 3, the standard deviation (sigma) and the relative standard deviation (RSD/%) of the hydrogen-resistant steel tube samples with the diameter of 4mm multiplied by 1mm HR-1 are small and meet the requirement of analysis accuracy.
According to the experimental scheme, the phi 4mm multiplied by 1mm HR-1 hydrogen-resistant steel pipe sample of the example 2 is compared and verified with the test result of the chemical method by the method, and the comparison result is shown in the table 4.
TABLE 4 comparison of sample analysis
As can be seen from Table 4, the measurement results obtained by applying the method to the phi 4mm multiplied by 1mm HR-1 hydrogen-resistant steel pipe sample are well consistent with the results obtained by the traditional chemical analysis method, which indicates that the method is applicable to the phi 4mm multiplied by 1mm HR-1 hydrogen-resistant steel pipe sample.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The method for measuring multiple elements of the HR-1 direct-reading spectrum of the hydrogen-resistant steel pipe is characterized by comprising the following steps of:
s1, processing the hydrogen-resistant steel pipe HR-1 of the sample to be measured into a measuring section;
s2, pressing the measuring section obtained in the step S1 into a sheet sample;
s3, processing standard samples RE12, RN19, SUS5, RH12, RH18, RH31 and hydrogen-resistant steel to be smooth in surface;
s4, analyzing the standard samples RE12, RN19, SUS5, RH12, RH18 and RH31 one by one on a direct-reading spectrometer, and exciting 3 stable points at least for each standard sample to obtain a stable curve calibrated by the high and low standard samples;
s5, analyzing the standard sample hydrogen-resistant steel on a direct-reading spectrometer, and exciting at least 3 stable points to finish drift calibration of a stable curve;
and S6, analyzing on a direct-reading spectrometer, and analyzing the sheet sample obtained in the step S2 by using the analysis curve obtained in the step S5 to obtain the content of each element in the sheet sample.
2. The method for multi-element measurement of the HR-1 direct-reading spectrum of the hydrogen-resistant steel pipe according to claim 1, wherein specifications of the HR-1 of the hydrogen-resistant steel pipe comprise phi 3mm x 1mm and phi 4mm x 1 mm.
3. The method for multi-element determination of HR-1 direct-reading spectrum of hydrogen-resistant steel tube according to claim 1, wherein the length of the measuring section in step S1 is 20 mm-25 mm.
4. The method for multi-element measurement of HR-1 direct-reading spectrum of hydrogen-resistant steel tube according to claim 1, wherein the width of the transverse surface of the flake sample in step S2 is greater than or equal to 6 mm.
5. The method for multi-element determination of HR-1 direct-reading spectrum of hydrogen-resistant steel pipe according to claim 1, wherein the pressing measurement section in step S2 adopts a ZHY-401A/601A press machine.
6. The method for multi-element determination of HR-1 direct-reading spectrum of hydrogen-resistant steel pipe according to claim 5, wherein the step S2 comprises the following steps:
s21, adjusting an electric contact to set the upper limit of a pressure gauge to be 40 tons;
and S22, setting the pressure maintaining time to be 45-60S.
7. The method for multi-element determination of HR-1 direct-reading spectrum of hydrogen-resistant steel tube according to claim 1, wherein the number of the measurement sections of each sample to be measured in step S1 is not less than 3.
8. The method for multi-element measurement of HR-1 direct-reading spectrum of hydrogen-resistant steel pipe according to claim 1, wherein the sample processing in step S3 adopts a spectrum sample grinding machine.
9. The method for multi-element measurement of HR-1 direct-reading spectrum of hydrogen-resistant steel tube according to claim 8, wherein in step S3, the sample is ground by replacing with a new grinding wheel, and the sample is processed sequentially according to RE12, RN19, SUS5, RH12, RH18 and RH 31.
10. The method for multi-element determination by direct-reading spectrum of HR-1 of the hydrogen-resistant steel pipe according to any one of claims 1 to 9, wherein the elements measured by HR-1 of the hydrogen-resistant steel pipe comprise carbon, silicon, manganese, phosphorus, sulfur, chromium, nickel and molybdenum.
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