CN111999245A - Cutting force-based semi-quantitative detection device and method for impurity elements of rare earth alloy - Google Patents
Cutting force-based semi-quantitative detection device and method for impurity elements of rare earth alloy Download PDFInfo
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- CN111999245A CN111999245A CN202010919853.0A CN202010919853A CN111999245A CN 111999245 A CN111999245 A CN 111999245A CN 202010919853 A CN202010919853 A CN 202010919853A CN 111999245 A CN111999245 A CN 111999245A
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 84
- 239000000956 alloy Substances 0.000 title claims abstract description 84
- 238000005520 cutting process Methods 0.000 title claims abstract description 83
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 82
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 82
- 239000012535 impurity Substances 0.000 title claims abstract description 68
- 238000001514 detection method Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004458 analytical method Methods 0.000 claims abstract description 6
- 238000005553 drilling Methods 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 4
- 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
- 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
- 238000003556 assay Methods 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
- 238000012545 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
- 238000012360 testing method Methods 0.000 description 1
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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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- Life Sciences & Earth Sciences (AREA)
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- Analytical Chemistry (AREA)
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Abstract
The invention discloses a cutting force-based semi-quantitative detection device and method for impurity elements of rare earth alloys. Cutting force signals borne by the drill bit are transmitted to the pressure sensor through the servo motor, and the pressure sensor transmits the cutting force signals to the industrial computer; and 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 elements, the content range of the impurity elements can be determined semi-quantitatively 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 cutting force-based semi-quantitative detection device and method for impurity elements of rare earth alloy in the quality inspection link of the rare earth alloy.
Background
Rare earth alloys (such as praseodymium-neodymium alloy, dysprosium-iron alloy and the like) are usually produced by a molten salt electrolysis method, limited impurity elements (usually five elements of iron, aluminum, silicon, molybdenum and carbon) enter the rare earth alloys in a dissolving, mixing and other modes in the process of preparing the rare earth alloys by molten salt electrolysis, and the quality of the rare earth alloys is influenced by the excessive content of the impurity elements.
At present, the content of impurity elements in the rare earth alloy is mainly detected by an ICP emission spectrometry. The principle is that an ICP emission spectrometer provides energy to evaporate an alloy sample to be detected, gaseous atoms are formed, and the gaseous atoms are further excited 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 measured, the emission intensity is different, and the quantitative determination of each element can be realized.
The disadvantages of the prior art are as follows:
firstly, an ICP emission spectrometer belongs to a precise instrument, is high in price, needs to be operated by a professional and depends on the operation level of an operator;
secondly, the detection period of the ICP emission spectrometer is long, the sample preparation process needs to be carried out through the processes of drilling, sampling, testing and the like, and 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 the actual production, only the interval of the total amount of the impurity elements in the rare earth alloy is needed to be known, such as 3000ppm for 2000-plus or 4000ppm for 3000-plus, and the accurate value is not needed;
fourth, it is expensive to detect each produced rare earth alloy by ICP emission spectroscopy.
Disclosure of Invention
The invention aims to provide a cutting force-based semi-quantitative detection device and method for impurity elements of rare earth alloy.
The purpose of the invention is realized by the following technical scheme:
the invention discloses a cutting force-based semi-quantitative detection device for impurity elements of rare earth alloys, 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 in wired or wireless connection with a high-speed signal acquisition card arranged in an industrial computer.
According to the semi-quantitative detection method for the impurity element of the rare earth alloy, which is realized by the semi-quantitative detection device for the impurity element of the rare earth alloy based on the cutting force, the cutting force signal borne by the drill bit is transmitted to the pressure sensor through the servo motor, and the cutting force signal is transmitted to the industrial computer by the pressure sensor;
and the industrial computer stores the cutting force signal, calls the existing rare earth alloy cutting force value in the database to compare 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.
According to the technical scheme provided by the invention, the cutting force based semi-quantitative detection device and method for impurity elements of the rare earth alloy, which are provided by the embodiment of the invention, is adopted as the index basis for measuring the content of the impurity elements by using the cutting force which is one of the physical properties of the rare earth alloy, the content range of the impurity elements can be determined semi-quantitatively without chemical analysis, and the purposes of low cost and real-time online detection are achieved.
Drawings
Fig. 1 is a schematic structural diagram of a cutting force-based semi-quantitative detection device for impurity elements in rare earth alloys according to an embodiment of the present invention.
Fig. 2 is a comparison graph of a cutting force numerical curve in a rare earth metal cutting force database with different impurity contents and a rare earth alloy cutting force numerical curve to be measured according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in further detail below. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
The invention discloses a cutting force-based semi-quantitative detection device for impurity elements of rare earth alloy, which has the preferred specific implementation modes that:
the automatic drilling machine comprises a frame, install step motor and driven lead screw in the frame, the meshing has the slip table on the lead screw, install servo motor and driven drill bit on the slip table, servo motor is equipped with pressure sensor, pressure sensor is with the high-speed signal acquisition card wired or wireless connection who installs in industrial computer.
According to the semi-quantitative detection method for the impurity element of the rare earth alloy, which is realized by the semi-quantitative detection device for the impurity element of the rare earth alloy based on the cutting force, the cutting force signal borne by the drill bit is transmitted to the pressure sensor through the servo motor, and the cutting force signal is transmitted to the industrial computer by the pressure sensor;
and the industrial computer stores the cutting force signal, calls the existing rare earth alloy cutting force value in the database to compare 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.
Comprises the following steps;
(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 driven by the servo motor, a high-speed signal acquisition card and an industrial computer according to the cutting force detection principle, wherein the stepping motor drives a screw rod to rotate, and the sliding table and the pressure sensor, the servo motor and the drill connected with the sliding table move up and down along with the sliding table, wherein the drill is driven by the servo motor to drill the rare earth alloy to be detected, and the drilling depth is kept consistent every time;
(S2) collecting cutting force signals received by the drill bit in the drilling process by adopting the pressure sensor, transmitting the signals to a high-speed signal collection card for pretreatment in a cable communication mode, and uploading the signals to an industrial computer for analysis;
(S3) the industrial computer stores the cutting force signal, compares the cutting force signal with the cutting force of the rare earth alloy with different impurity contents in the database, and finds out the nearest impurity content value of the rare earth alloy sample to be detected;
(S4) the drill completes the drilling action, and the industrial computer screen displays whether the content of the rare earth alloy impurity elements is qualified or not in real time.
In the step (S1), the drill bit drills into the rare earth alloy to be measured, and the cutting force applied to the drill bit is collected by the pressure sensor.
And (S3) 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 and lower limits of the impurity element of the rare earth alloy closest to the sample phase to be detected in the database.
And determining the content range of the impurity elements of the sample to be detected according to the upper limit and the lower limit of the impurity elements of the rare earth alloy closest to the sample to be detected in the database, namely semi-quantitatively detecting the content of the impurity elements in the rare earth alloy.
The cutting force-based semi-quantitative detection device and method for the impurity elements in the rare earth alloy solve the problems that in the process of detecting the impurity elements in the rare earth alloy by using the traditional ICP emission spectrometry, a series of operations such as sampling, sample preparation, assay, analysis and the like are needed to obtain accurate values of the content of the impurity elements, so that the detection period is too long, the price is high and the like.
Compared with the prior art, the invention has the following beneficial effects: because the cutting force for detecting one of the physical properties of the rare earth alloy is adopted as an index basis for measuring the content of the impurity elements, the content range of the impurity elements can be determined semi-quantitatively without chemical analysis, and the purposes of low cost and real-time online detection are achieved.
The specific embodiment is as follows:
as shown in FIG. 1, the semi-quantitative detection device and method for impurity elements in rare earth alloy based on cutting force of the invention comprises the following steps:
s1, erecting a detection system comprising a rack 1, a stepping motor 3 and a sliding table 2 driven by the stepping motor, a pressure sensor 4, a servo motor 5 and a drill 6 driven by the servo motor, a high-speed signal acquisition card 9 and an industrial computer 8 according to the 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 along with the sliding table. The drill 6 is driven by the servo motor 5 to drill the rare earth alloy to be detected, and the drilling depth is kept consistent every time;
s2, collecting cutting force signals received by the drill bit 6 in the drilling process by the pressure sensor 4, transmitting the signals to a high-speed signal acquisition card 9 for preprocessing in a cable communication mode, installing the high-speed signal acquisition card 9 in an industrial computer 8, and analyzing the cutting force by the industrial computer 8;
s3, the industrial computer 8 stores the cutting force signal, compares the cutting force signal with the cutting force of the rare earth alloy with different impurity contents in the database, and finds out the nearest impurity content value of the rare earth alloy sample to be detected;
s4, the drill 6 finishes the drilling action, and the screen of the industrial computer 8 displays whether the content of the rare earth alloy impurity elements is qualified or not in real time.
The cutting device adopted in the semi-quantitative detection method of the impurity elements of the rare earth alloy shown in figure 1 comprises a servo motor 5 and a drill 6 driven by the servo motor. The adopted servo motor 5 is a Taida ASD-B2 type servo motor, the power is 200w, the rotating speed can be adjusted according to requirements, and the adjusting range of the rotating speed is generally between 0 and 6000 revolutions per minute; the adopted drill 6 is a high-speed steel straight shank twist drill with the diameter of 5mm, and the drill 6 is drilled in the rare earth alloy and then is subjected to the reaction force of the cutting force; the frame 1 comprises lead screw 7, slip table 2 and drive lead screw pivoted step motor 3, and wherein step motor 3 drive lead screw 7 and slip table 2 can carry out the up-and-down motion to can accurate control slip table 2 movement distance, slip table 2 links to each other with pressure sensor 4 and drill bit 6 are fixed.
When the drill 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 specified angle, so that the drilling speed and the drilling depth of the drill 6 can be kept consistent every time.
The signal processing device adopted in the semi-quantitative detection method of the impurity elements of the rare earth alloy shown in the figure 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 inside the industrial computer 8, and the pressure sensor 4 is connected with the high-speed signal acquisition card 9 through a cable. The model of the adopted high-speed signal acquisition card 9 is NI 6320; the model of the industrial computer 8 adopted is the Hua APAX-5580; the range of the adopted 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 a 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 cutting force applied to the drill bit 6 can be collected by the pressure sensor 4. The pressure sensor 4 transmits the cutting force signal to a high speed signal acquisition card 9 via a cable and is finally 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 to compare 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.
As shown in FIG. 2, the cutting force (shown by a dotted line) of the alloy to be measured is between 200ppm and 300ppm of the impurity element content of the rare earth alloy, so that the impurity element content of the alloy to be measured can be determined to be between 200ppm and 300 ppm.
Finally, the detection result is displayed by the industrial computer 8.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. The utility model provides a half quantitative detection device of rare earth alloy impurity element based on cutting force, a serial communication port, including frame (1), install step motor (3) and driven lead screw (7) on frame (1), the meshing has slip table (2) on lead screw (7), install servo motor (5) and driven drill bit (6) on slip table (2), servo motor (5) are equipped with pressure sensor (4), pressure sensor (4) and the wired or wireless connection of high-speed signal collection card (9) of installing in industrial computer (8).
2. The semi-quantitative detection method of rare earth alloy impurity elements based on cutting force of the semi-quantitative detection device of rare earth alloy impurity elements based on cutting force of claim 1 is characterized in that cutting force signals received by the drill bit (6) are transmitted to the pressure sensor (4) through the servo motor (5), and the pressure sensor (4) transmits the cutting force signals to the industrial computer (8);
and the industrial computer (8) stores the cutting force signal, calls the existing rare earth alloy cutting force value in the database to compare 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.
3. The semi-quantitative cutting force-based detection method for impurity elements in rare earth alloys according to claim 2, comprising 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 driven by the servo motor, a high-speed signal acquisition card and an industrial computer according to the cutting force detection principle, wherein the stepping motor drives a screw rod to rotate, and the sliding table and the pressure sensor, the servo motor and the drill connected with the sliding table move up and down along with the sliding table, wherein the drill is driven by the servo motor to drill the rare earth alloy to be detected, and the drilling depth is kept consistent every time;
(S2) collecting cutting force signals received by the drill bit in the drilling process by adopting the pressure sensor, transmitting the signals to a high-speed signal collection card for pretreatment in a cable communication mode, and uploading the signals to an industrial computer for analysis;
(S3) the industrial computer stores the cutting force signal, compares the cutting force signal with the cutting force of the rare earth alloy with different impurity contents in the database, and finds out the nearest impurity content value of the rare earth alloy sample to be detected;
(S4) the drill completes the drilling action, and the industrial computer screen displays whether the content of the rare earth alloy impurity elements is qualified or not in real time.
4. The semi-quantitative cutting force-based detection method for impurity elements in rare earth alloys according to claim 3, wherein in the step (S1), the drill bit drills into the rare earth alloy to be detected, and the cutting force applied to the drill bit is collected by the pressure sensor.
5. The semi-quantitative cutting force-based detection method for impurity elements in rare earth alloys according to claim 4, wherein the step (S3) is performed by comparing the detected cutting force with the cutting force of rare earth alloys with accurate impurity element content in a database, and finding the upper and lower limits of impurity elements in rare earth alloys closest to the sample phase to be measured in the database;
and determining the content range of the impurity elements of the sample to be detected according to the upper limit and the lower limit of the impurity elements of the rare earth alloy closest to the sample to be detected in the database, namely semi-quantitatively detecting the content of the impurity elements in the rare earth alloy.
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