CN111999245B - Rare earth alloy impurity element semi-quantitative detection device and method based on cutting force - Google Patents
Rare earth alloy impurity element semi-quantitative detection device and method based on cutting force Download PDFInfo
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- CN111999245B CN111999245B CN202010919853.0A CN202010919853A CN111999245B CN 111999245 B CN111999245 B CN 111999245B CN 202010919853 A CN202010919853 A CN 202010919853A CN 111999245 B CN111999245 B CN 111999245B
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- 238000005520 cutting process Methods 0.000 title claims abstract description 88
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 81
- 239000000956 alloy Substances 0.000 title claims abstract description 81
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 79
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 79
- 239000012535 impurity Substances 0.000 title claims abstract description 65
- 238000001514 detection method Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004458 analytical method Methods 0.000 claims abstract description 6
- 238000005553 drilling Methods 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 3
- 230000000704 physical effect Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 238000004993 emission spectroscopy Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000997 High-speed steel Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910000583 Nd alloy Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- RKLPWYXSIBFAJB-UHFFFAOYSA-N [Nd].[Pr] Chemical compound [Nd].[Pr] RKLPWYXSIBFAJB-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- RDTHZIGZLQSTAG-UHFFFAOYSA-N dysprosium iron Chemical compound [Fe].[Dy] RDTHZIGZLQSTAG-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- G01N19/00—Investigating materials by mechanical methods
- G01N19/08—Detecting presence of flaws or irregularities
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a rare earth alloy impurity element semi-quantitative detection device and method based on cutting force, comprising a frame, wherein a stepping motor and a screw rod driven by the stepping motor are arranged on the frame, a sliding table is meshed on the screw rod, a servo motor and a drill bit driven by the servo motor are arranged on the sliding table, the servo motor is provided with a pressure sensor, and the pressure sensor is connected with a high-speed signal acquisition card arranged in an industrial computer. Transmitting cutting force signals received by the drill bit to the pressure sensor through the servo motor, and transmitting the cutting force signals to the industrial computer through the pressure sensor; the industrial computer takes the impurity element content value of the rare earth alloy corresponding to the cutting force sample interval as the impurity element content interval of the rare earth alloy. The cutting force for detecting one of the physical properties of the rare earth alloy is used as an index basis for measuring the content of the impurity element, the content range of the impurity element can be semi-quantitatively determined without chemical analysis, and the purposes of low cost and real-time online detection are achieved.
Description
Technical Field
The invention relates to a metal detection and soft measurement technology, in particular to a device and a method for semi-quantitatively detecting rare earth alloy impurity elements based on cutting force in a rare earth alloy quality inspection link.
Background
Rare earth alloys (such as praseodymium-neodymium alloy, dysprosium-iron alloy and the like) are often produced by adopting a molten salt electrolysis method, and in the process of preparing the rare earth alloy by molten salt electrolysis, a limited number of impurity elements (usually iron, aluminum, silicon, molybdenum, carbon five elements) enter the rare earth alloy in a dissolving, inclusion and other modes, and the quality of the rare earth alloy is influenced by the excessive content of the impurity elements.
At present, the detection of the content of impurity elements in rare earth alloy is mainly measured by ICP emission spectrometry. The principle is that an ICP emission spectrometer provides energy to evaporate an alloy sample to be detected, form gaseous atoms, and further excite the gaseous atoms to generate light radiation; decomposing the composite light emitted by the light source into spectral lines arranged according to the wavelength sequence through a monochromator to form a spectrum; detecting the wavelength and intensity of spectral lines in the spectrum with a detector; according to the different concentrations of the atoms of the elements to be detected, the emission intensity is different, and the quantitative determination of each element can be realized.
The disadvantages of the above prior art are:
firstly, an ICP emission spectrometer belongs to a precise instrument, is high in price, needs professional operation, and depends on the operation level of operators;
secondly, the ICP emission spectrometer has long detection period, and the sample preparation process needs to be subjected to drilling, sampling, assay and other processes, so that the sample cannot be detected on line in real time;
thirdly, the ICP emission spectrometer can quantitatively determine the impurity elements in the rare earth alloy, but in actual production, only the interval in which the total amount of the impurity elements in the rare earth alloy is located, such as 2000-3000ppm or 3000-4000ppm, is needed, and the accurate value is not needed;
fourth, if ICP emission spectrometry is used to detect each rare earth alloy produced, it is costly.
Disclosure of Invention
The invention aims to provide a cutting force-based rare earth alloy impurity element semi-quantitative detection device and method.
The invention aims at realizing the following technical scheme:
the invention discloses a rare earth alloy impurity element semi-quantitative detection device based on cutting force, which comprises a rack, wherein a stepping motor and a screw rod driven by the stepping motor are arranged on the rack, a sliding table is meshed on the screw rod, a servo motor and a drill bit driven by the servo motor are arranged on the sliding table, the servo motor is provided with a pressure sensor, and the pressure sensor is connected with a high-speed signal acquisition card arranged in an industrial computer in a wired or wireless manner.
According to the rare earth alloy impurity element semi-quantitative detection method based on the rare earth alloy impurity element semi-quantitative detection device based on the cutting force, the cutting force signal received by the drill bit is transmitted to the pressure sensor through the servo motor, and the pressure sensor transmits the cutting force signal to the industrial computer;
the industrial computer stores the cutting force signal, calls the existing rare earth alloy cutting force value in the database, compares the cutting force value with the cutting force value, finds out the closest rare earth alloy cutting force sample section, and takes the rare earth alloy impurity element content value corresponding to the cutting force sample section as the impurity element content section of the rare earth alloy.
According to the technical scheme provided by the invention, the cutting force-based rare earth alloy impurity element semi-quantitative detection device and method provided by the embodiment of the invention can semi-quantitatively determine the impurity element content range without chemical analysis due to the fact that the cutting force for detecting one of the physical properties of the rare earth alloy is adopted as an index basis for measuring the impurity element content, so that the purposes of low cost and real-time online detection are achieved.
Drawings
Fig. 1 is a schematic structural diagram of a rare earth alloy impurity element semi-quantitative detection device based on cutting force according to an embodiment of the present invention.
Fig. 2 is a graph showing comparison between cutting force value curves in rare earth metal cutting force databases with different impurity contents and cutting force value curves of rare earth alloys to be measured.
Detailed Description
Embodiments of the present invention will be described in further detail below. What is not described in detail in the embodiments of the present invention belongs to the prior art known to those skilled in the art.
The invention relates to a rare earth alloy impurity element semi-quantitative detection device based on cutting force, which comprises the following preferred specific embodiments:
the automatic feeding device comprises a frame, wherein a stepping motor and a screw rod driven by the stepping motor are arranged on the frame, a sliding table is meshed on the screw rod, a servo motor and a drill bit driven by the servo motor are arranged on the sliding table, the servo motor is provided with a pressure sensor, and the pressure sensor is connected with a high-speed signal acquisition card arranged in an industrial computer in a wired or wireless mode.
According to the rare earth alloy impurity element semi-quantitative detection method based on the rare earth alloy impurity element semi-quantitative detection device based on the cutting force, the cutting force signal received by the drill bit is transmitted to the pressure sensor through the servo motor, and the pressure sensor transmits the cutting force signal to the industrial computer;
the industrial computer stores the cutting force signal, calls the existing rare earth alloy cutting force value in the database, compares the cutting force value with the cutting force value, finds out the closest rare earth alloy cutting force sample section, and takes the rare earth alloy impurity element content value corresponding to the cutting force sample section as the impurity element content section of the rare earth alloy.
Comprises the following steps of;
the method comprises the steps of (S1) erecting a detection system comprising a rack, a stepping motor and a sliding table driven by the stepping motor, a pressure sensor, a servo motor and a drill bit driven by the servo motor, a high-speed signal acquisition card and an industrial computer according to a cutting force detection principle, wherein the stepping motor drives a screw rod to rotate, the sliding table and the pressure sensor, the servo motor and the drill bit connected with the sliding table move up and down along with the sliding table, the servo motor and the drill bit are driven by the servo motor to drill the rare earth alloy to be detected, and the drilling depth of each drilling is kept consistent;
(S2) acquiring cutting force signals received by the drill bit in the drilling process by adopting the pressure sensor, transmitting the cutting force signals to a high-speed signal acquisition card for pretreatment in a cable communication mode, and then uploading the cutting force signals to an industrial computer for analysis;
(S3) the industrial computer stores the cutting force signals and compares the cutting force signals with the cutting forces of rare earth alloys with different impurity contents in a database to find out the closest impurity content value of the rare earth alloy sample to be detected;
and (S4) the drill bit completes the drilling action, and an industrial computer screen displays whether the content of the rare earth alloy impurity element is qualified or not in real time.
And (2) drilling the drill bit into the rare earth alloy to be measured in the step (S1), and collecting the cutting force applied to the drill bit by the pressure sensor.
And (3) comparing the detected cutting force with the cutting force of the rare earth alloy with the accurate impurity element content in the database, and finding out the upper limit and the lower limit of the impurity element of the rare earth alloy closest to the sample phase to be detected in the database.
And determining the impurity element content range of the sample to be detected according to the upper limit and the lower limit of the impurity element of the rare earth alloy closest to the sample to be detected in the database, namely semi-quantitatively detecting the impurity element content in the rare earth alloy.
The cutting force-based rare earth alloy impurity element semi-quantitative detection device and method solve the problems that in the process of detecting impurity elements in rare earth alloy by a traditional ICP emission spectrometry, a series of operations such as sampling, sample preparation, assay and analysis are needed to obtain accurate values of impurity element content, so that the detection period is overlong and the cost is high.
Compared with the prior art, the invention has the following beneficial effects: the cutting force for detecting one of the physical properties of the rare earth alloy is used as an index basis for measuring the content of the impurity element, so that the content range of the impurity element can be semi-quantitatively determined without chemical analysis, and the purposes of low cost and real-time online detection are achieved.
Specific examples:
as shown in fig. 1, the rare earth alloy impurity element semi-quantitative detection device and method based on cutting force of the present invention comprises the steps of:
s1, erecting a detection system comprising a frame 1, a stepping motor 3, a sliding table 2 driven by the stepping motor, a pressure sensor 4, a servo motor 5, a drill bit 6 driven by the servo motor, a high-speed signal acquisition card 9 and an industrial computer 8 according to a cutting force detection principle. The stepping motor 3 drives the screw rod 7 to rotate, and the sliding table 2 and the pressure sensor 4, the servo motor 5 and the drill bit 6 connected with the sliding table move up and down. The drill bit 6 performs drilling action on the rare earth alloy to be measured under the drive of the servo motor 5, and the drilling depth of each time is kept consistent;
s2, acquiring cutting force signals received by the drill bit 6 in the drilling process by adopting the pressure sensor 4, transmitting the cutting force signals to the high-speed signal acquisition card 9 for preprocessing in a cable communication mode, installing the high-speed signal acquisition card 9 in the industrial computer 8, and analyzing the cutting force by the industrial computer 8;
s3, the industrial computer 8 stores cutting force signals and compares the cutting force signals with the cutting forces of rare earth alloys with different impurity contents in a database, and the closest impurity content value of the rare earth alloy sample to be detected is found out;
s4, the drill bit 6 completes the drilling action, and the screen of the industrial computer 8 displays whether the content of the rare earth alloy impurity element is qualified or not in real time.
The cutting device used in the rare earth alloy impurity element semi-quantitative detection method shown in fig. 1 comprises a servo motor 5 and a drill bit 6 driven by the servo motor. The model 5 of the adopted servo motor is a type-up ASD-B2 servo motor, the power of the servo motor is 200w, the rotating speed can be adjusted according to the requirement, and the rotating speed adjusting range is generally between 0 and 6000 revolutions per minute; the adopted drill bit 6 is a high-speed steel straight shank twist drill bit with the diameter of 5mm, and the drill bit 6 is drilled in rare earth alloy and is subjected to the reaction force of cutting force; the frame 1 comprises a screw rod 7, a sliding table 2 and a stepping motor 3 for driving the screw rod to rotate, wherein the stepping motor 3 drives the screw rod 7 and the sliding table 2 to move up and down, the movement distance of the sliding table 2 can be accurately controlled, and the sliding table 2 is fixedly connected with the pressure sensor 4 and the drill bit 6.
When the drill bit 6 contacts the rare earth alloy to be measured, the pressure sensor 4 can immediately detect a signal of cutting force change, and the stepping motor 3 starts to drive the screw rod 7 to rotate by a designated angle, so that the drilling speed and depth of the drill bit 6 can be kept consistent each time.
The signal processing device used in the rare earth alloy impurity element semi-quantitative detection method shown in fig. 1 comprises a pressure sensor 4, a high-speed signal acquisition card 9 and an industrial computer 8. The high-speed signal acquisition card 9 is arranged in a PCI slot in the industrial computer 8, and the pressure sensor 4 is connected with the high-speed signal acquisition card 9 through a cable. The model 9 of the adopted high-speed signal acquisition card is NI 6320; the model 8 of the adopted industrial computer is the Hua grinding APAX-5580; the range of the pressure sensor 4 is 0-500N, one end of the pressure sensor is fixedly connected with the sliding table 2, and the other end of the pressure sensor is connected with the servo motor 5 for driving the drill bit 6. When the servo motor 5 drives the drill bit 6 to drill on the rare earth alloy, the reaction force of the cutting force is transmitted to the pressure sensor 4 through the servo motor 5, and the pressure sensor 4 can collect the cutting force born by the drill bit 6. The pressure sensor 4 transmits the cutting force signal via a cable to a high-speed signal acquisition card 9 and is ultimately processed by an industrial computer 8. The industrial computer 8 stores the cutting force signal, calls the existing rare earth alloy cutting force value in the database, compares the cutting force value with the cutting force value, finds out the closest rare earth alloy cutting force sample section, and takes the rare earth alloy impurity element content value corresponding to the cutting force sample section as the impurity element content section of the rare earth alloy.
As shown in fig. 2, the cutting force (shown by a broken line) of the alloy to be measured is between 200ppm and 300ppm of the rare earth alloy as the impurity element content, so that the impurity element content range of the alloy to be measured can be determined to be between 200 and 300 ppm.
Finally, the detection result is displayed by the industrial computer 8.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (1)
1. A semi-quantitative detection method of rare earth alloy impurity elements based on cutting force is characterized by comprising the following steps:
the rare earth alloy impurity element semi-quantitative detection device based on cutting force comprises a frame (1), wherein a stepping motor (3) and a screw rod (7) driven by the stepping motor are arranged on the frame (1), a sliding table (2) is meshed on the screw rod (7), a servo motor (5) and a drill bit (6) driven by the servo motor are arranged on the sliding table (2), a pressure sensor (4) is arranged on the servo motor (5), and the pressure sensor (4) is connected with a high-speed signal acquisition card (9) arranged in an industrial computer (8) in a wired or wireless mode;
the semi-quantitative detection method for the rare earth alloy impurity element comprises the following steps:
the cutting force signal received by the drill bit (6) is transmitted to the pressure sensor (4) through the servo motor (5), and the pressure sensor (4) transmits the cutting force signal to the industrial computer (8);
the industrial computer (8) stores the cutting force signal, calls the existing rare earth alloy cutting force value in the database, compares the cutting force value with the cutting force value, finds out the closest rare earth alloy cutting force sample interval, and takes the rare earth alloy impurity element content value corresponding to the cutting force sample interval as the impurity element content interval of the rare earth alloy;
the method specifically comprises the following steps of;
the method comprises the steps of (S1) erecting a detection system comprising a rack, a stepping motor and a sliding table driven by the stepping motor, a pressure sensor, a servo motor and a drill bit driven by the servo motor, a high-speed signal acquisition card and an industrial computer according to a cutting force detection principle, wherein the stepping motor drives a screw rod to rotate, the sliding table and the pressure sensor, the servo motor and the drill bit connected with the sliding table move up and down along with the sliding table, the servo motor and the drill bit are driven by the servo motor to drill the rare earth alloy to be detected, and the drilling depth of each drilling is kept consistent;
(S2) acquiring cutting force signals received by the drill bit in the drilling process by adopting the pressure sensor, transmitting the cutting force signals to a high-speed signal acquisition card for pretreatment in a cable communication mode, and then uploading the cutting force signals to an industrial computer for analysis;
(S3) the industrial computer stores the cutting force signals and compares the cutting force signals with the cutting forces of rare earth alloys with different impurity contents in a database to find out the closest impurity content value of the rare earth alloy sample to be detected;
(S4) the drill bit completes the drilling action, and an industrial computer screen displays whether the content of the rare earth alloy impurity element is qualified or not in real time;
the drill bit in the step (S1) drills into the rare earth alloy to be measured, and the pressure sensor collects the cutting force applied to the drill bit;
comparing the detected cutting force with the cutting force of the rare earth alloy with accurate impurity element content in the database, and finding out upper and lower limits of the impurity elements of the rare earth alloy closest to the sample phase to be detected in the database;
and determining the impurity element content range of the sample to be detected according to the upper limit and the lower limit of the impurity element of the rare earth alloy closest to the sample to be detected in the database, namely semi-quantitatively detecting the impurity element content in the rare earth alloy.
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| CN202010919853.0A CN111999245B (en) | 2020-09-04 | 2020-09-04 | Rare earth alloy impurity element semi-quantitative detection device and method based on cutting force |
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| CN111999245B true CN111999245B (en) | 2023-12-05 |
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2020
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| CN111999245A (en) | 2020-11-27 |
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