CN115096943B - Nondestructive testing device and testing method for uniformity of fluid grinding tool - Google Patents
Nondestructive testing device and testing method for uniformity of fluid grinding tool Download PDFInfo
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- 238000012360 testing method Methods 0.000 title claims abstract description 52
- 239000012530 fluid Substances 0.000 title claims abstract description 23
- 238000009659 non-destructive testing Methods 0.000 title claims abstract description 23
- 238000000227 grinding Methods 0.000 title claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 93
- 238000012545 processing Methods 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 27
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 238000012417 linear regression Methods 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims description 33
- 230000002452 interceptive effect Effects 0.000 claims description 23
- 238000000605 extraction Methods 0.000 claims description 9
- 239000003990 capacitor Substances 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 11
- 238000011077 uniformity evaluation Methods 0.000 abstract 1
- 239000007787 solid Substances 0.000 description 17
- 238000001125 extrusion Methods 0.000 description 10
- 230000008859 change Effects 0.000 description 9
- 239000003082 abrasive agent Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 230000006870 function Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000011835 investigation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000013102 re-test Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000010801 machine learning Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000006072 paste Substances 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000001303 quality assessment method Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000012549 training 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
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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Abstract
The invention provides a nondestructive testing device and a testing method for uniformity of a fluid grinding tool, wherein a sample with a maximum component raw material of x max and a sample with a minimum component raw material of x min are respectively extracted, relative standard deviation is calculated according to detection values of the sample with the maximum component raw material of x max and the sample with the minimum component raw material of x min, then uniformity coefficients are obtained by linear regression through two characteristic points in an absolute uniform state and a 50% non-uniform state, n detected product samples are sequentially extracted, and product uniformity evaluation is realized according to the relative standard deviation S r and uniformity H g of detection results. The invention greatly improves the intelligent degree and the detection efficiency of the detection equipment, reduces the workload of detection personnel, ensures the quality uniformity of products, ensures the driving and the navigation for the uniform processing stability of the products, improves the quality of client workpieces, reduces reworking and repairing and scrapping, realizes the nondestructive detection of samples in the detection process, ensures that the detected samples can be used continuously, and reduces the detection cost.
Description
Technical Field
The invention relates to a device and a method for nondestructive testing of uniformity of a fluid grinding tool, and belongs to the technical field of extrusion grinding and polishing.
Background
The semisolid extrusion abrasive flow is formed by kneading an abrasive, a carrier, an auxiliary agent and the like, has a form between liquid and solid, has certain hardness and viscoelasticity, can be deformed randomly when extruded and has certain flow property, and the flowing extrusion abrasive flow product is extruded and rubbed to flow across the surface of a workpiece, so that deburring, polishing and chamfering of special-shaped curved surfaces such as inner holes, narrow slits and the like are realized.
The uneven product directly causes a series of problems such as large local processing efficiency difference, out-of-control local chamfering precision, serious local residue and the like. In other words, uniformity is an essential feature of extruded abrasive stream products and is the first guarantee of uniform stability of deburring, chamfering and polishing processes. Currently, there is no uniform detection apparatus and detection method for uniformity of semi-solid extruded abrasive stream products. Production relies on fixed product constitution and production process to manage and control, and there is a potential risk of product quality out of control. The product is applied to the fields with high quality control requirements such as automobiles, medical treatment, military industry and the like, and once uniformity is in a problem, the loss is immeasurable.
For example, in chinese application publication No. CN113627293a, a method, apparatus and stirring device for detecting stirring uniformity of a mixture are disclosed, where the method obtains image information of a mixture to be detected; the method comprises the steps of inputting image information to a uniformity detection model, outputting uniformity information of a mixture to be detected, wherein the uniformity detection model is obtained after training based on mixture sample image information and a predetermined uniformity classification label, outputting the uniformity information in a machine learning model mode, and carrying out uniformity judgment with manpower, so that the uniformity detection model is more accurate and reasonable, and meanwhile, the uniformity detection result can be output only by acquiring the mixture image information, and the uniformity detection efficiency of a stirring mixture is effectively improved. The invention mainly detects the uniformity of the mixture through image processing, improves the uniformity detection efficiency, but the detection process needs the combination of a machine and a human to carry out uniformity judgment.
Disclosure of Invention
Aiming at the technical problems that the existing uniformity detection mode is low in intelligent degree and depends on manpower, the invention provides a nondestructive detection device and a nondestructive detection method for the uniformity of a fluid grinding tool, the quick and nondestructive detection of the uniformity of a fluid grinding tool product can be realized, and meanwhile, the selectivity of the detection, the quick output of data and the direct judgment of the uniformity can be considered.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows: a method for non-destructive testing of fluid abrasive uniformity comprising the steps of:
Step one, extracting the raw materials with the largest components in the unmixed raw materials Parts, designated as x max sample, of the minimum component material/>, of the sample was extractedStanding the extracted x max sample and the extracted x min sample respectively until the surfaces of the samples are leveled, wherein n is the sample extraction times and is more than or equal to 7;
step two, testing each x max sample and each x min sample by using a detection device, and calculating according to a test value to obtain a relative standard deviation S r50;
Thirdly, carrying out linear regression by using the absolute uniform state coordinates (0, 100%) and the 50% non-uniform state coordinates (S r50, 50%) to obtain a uniformity coefficient k;
step four, randomly selecting n different positions from the mixed tested samples to sample to obtain n tested samples, and respectively standing the tested samples until the surfaces of the tested samples are leveled;
Step five, placing each tested sample in a detection device for testing, and calculating a relative standard deviation S r according to the test result;
Step six, calculating to obtain uniformity indexes of the detected products according to a calculation formula of uniformity H g;
And seventhly, judging that the measured sample is uniform when the uniformity H g is more than or equal to 95.0%, judging that the measured sample is non-uniform if the uniformity H g is less than 95.0%, checking all detection and production elements at the moment, determining the reason of non-uniformity, and taking targeted measures.
The formula of the relative standard deviation S r is:
Wherein x i is the test value of the ith sample of the tested product, For the average value of the test values of the tested products, n is the sampling number of the tested products.
The formula of the uniformity H g is:
Hg＝1-k×Sr
where k is the uniformity coefficient, H g is the uniformity of the product under test, and S r is the relative standard deviation of the product under test. The state that the samples are completely and uniformly mixed is an absolute uniform state, and under the absolute uniform state:
Sr＝0,Hg＝100％。
The average value state of the test values of the x max sample and the x min sample is 50% non-uniform state, and the average value state of the test values is 50% non-uniform state: h g = 50%.
The nondestructive testing device of the nondestructive testing method for the uniformity of the fluid grinding tool comprises an interactive display screen, a data processing system, a shell and a detection system, wherein the interactive display screen and the detection system are connected with the data processing system;
the interactive display screen is arranged on the outer side of the shell, and the data processing system and the detection system are arranged inside the shell.
The detection system comprises a shielding cover, at least two sample cups, a signal source and a sample cup holder, wherein the sample cups are arranged on the inner side of the signal source, the shielding cover is arranged on the outer side of the signal source, the sample cup holder is arranged at the bottom of the sample cup, and the signal source is connected with the data processing system.
The signal source comprises an energizing coil, a capacitor and a signal generator, wherein the energizing coil and the capacitor are connected with the signal generator, the sample cup is arranged inside the energizing coil, and the signal generator is connected with the data processing system.
The sample cup is made of nonmetallic materials.
According to the invention, the detection system can be used for realizing the rapid detection of the uniformity of the fluid grinding tool product, the detection efficiency is effectively improved, and meanwhile, the interactive display screen and the data processing system are utilized to ensure that the detection device can give consideration to the selectivity of the test and the rapid output of the data, so that the intelligent degree of the detection equipment is greatly improved, and the workload of detection personnel is reduced. In addition, the sample is free from shearing, tearing and other acting forces in the detection process, the sample bottle is used to ensure that the detected sample is not polluted or damaged, nondestructive detection can be realized, normal use of the product is not influenced, and the sample bottle has the characteristics of economy and feasibility.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of the present invention.
Fig. 2 is a schematic structural view of the present invention.
FIG. 3 is a graph showing the results of a uniformity test of SM-C-PYZ series of extruded abrasive streams of different specifications using the present invention.
FIG. 4 is a graph of the results of a test of the uniformity of different production cycles for SM-C-PYZ-54 gauge extruded abrasive flow products using the present invention.
FIG. 5 is a graph comparing the results of a repeated measurement of the uniformity of an SM-C-PYZ-1200 gauge extruded abrasive stream using the present invention.
FIG. 6 is a graph of the results of a test of the uniformity of different production cycles for an SM-C-PYZ-1200 format extruded abrasive flow product using the present invention.
In the figure, 1 is an interactive display screen, 2 is a data processing system, 3 is a shell, 4 is a shielding cover, 5 is a sample cup, 6 is a signal source, and 7 is a sample cup holder.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without any inventive effort, are intended to be within the scope of the invention.
Example 1
A method for non-destructive testing of fluid abrasive uniformity, as shown in fig. 1, comprising the steps of:
Step one, extracting the raw materials of the largest components in the raw materials of the unmixed sample to be detected Parts, designated as x max sample, of the minimum component raw material/>, of the raw material sample was extractedEach part of the extracted x max sample and each part of the extracted x min sample are separately placed and respectively kept still until the surfaces of the samples are leveled to ensure that all the samples are in the effective detection range of the detection device, wherein n is the number of times of sample extraction, n is more than or equal to 7, and different positions are selected for each sampling, so that the detection accuracy is improved;
step two, testing each x max sample and each x min sample by using a detection device, and calculating according to a test value to obtain a relative standard deviation S r50; in the application, the voltage change amounts of the x max sample and the x min sample after being put into the detection equipment are tested and recorded, and the standard deviation formula S r is used for calculating to obtain S r50.
Step three, taking two characteristic points of an absolute uniform state coordinate (0, 100%) and a 50% non-uniform state coordinate (S r50, 50%), and carrying out linear regression according to the two points to obtain a uniformity coefficient k;
Step four, randomly selecting n different positions from the mixed tested samples to sample to obtain n tested samples, and respectively standing the tested product samples until the surfaces of the tested samples are leveled, so that the samples are all in the effective area of the coil, and signal acquisition deviation cannot occur due to the fact that the samples exceed the effective range of the coil, and the accuracy of detection results is ensured; wherein n is the number of sample extraction and n is more than or equal to 7;
Step five, placing the tested samples in a detection device to test the voltage signal change amount of each sample, and calculating the relative standard deviation S r according to the voltage signal change amount;
And step six, calculating to obtain the uniformity index of the detected product according to a calculation formula of uniformity H g through the relative standard deviation S r obtained in the step above.
And seventhly, judging that the detected sample is uniform when H g is more than or equal to 95.0%, judging that the sample is non-uniform when H g is less than 95.0%, checking all detection and production elements at the moment, determining the cause of the non-uniformity, and taking targeted measures.
Example 2
A method for non-destructive testing of fluid abrasive uniformity, wherein the relative standard deviation S r is formulated as:
Wherein x i is the test value of the ith sample of the tested product, For the average value of the test values of the tested products, n is the sampling number of the tested products.
The formula for uniformity H g is:
Hg＝1-k×Sr
Where k is the uniformity coefficient, H g is the uniformity of the product under test, and S r is the relative standard deviation of the product under test. The state of completely and uniformly mixing the samples is an absolute uniform state, and under the absolute uniform state:
Sr＝0,Hg＝100％。
The average value state of the test values of the x max sample and the x min sample is 50% uneven state, the test values of the x max sample and the x min sample are the voltage signal change amounts of the x max sample and the x min sample, and the average value state of the test values of the x max sample and the x min sample is 50% uneven state: h g = 50%.
Other structures and principles are the same as those of embodiment 1.
Example 3
A nondestructive testing device and testing method for uniformity of a fluid grinding tool are shown in figure 2, and comprise an interactive display screen 1, a data processing system 2, a shell 3and a testing system, wherein the interactive display screen 1 and the testing system are connected with the data processing system 2; the interactive display screen 1 is arranged outside the shell 3, and the data processing system 2 detection system is arranged inside the shell. The interactive display screen 1 is mainly used for man-machine interaction and displays detection results on the screen. The main function of the data processing system 2 is to analyze and process the detection data generated by the detection system, judge the uniformity of the detected sample, and display the detection result through the interactive display screen 1. The data processing system 2 is internally provided with a database, k coefficients and uniformity H g of products with different specifications are stored in the database, test calculation can be accelerated, monitoring and comparison of product uniformity among batches can be realized, and meanwhile, the data processing system 2 can collect test signals generated in the signal source 6. The main function of the shell 3 is to block external interference signals and ensure that detection data is not affected. The main function of the detection system is to carry out uniformity detection on the detected sample.
Specifically, the detecting system comprises a shielding cover 4, at least two sample cups 5, a signal source 6 and a sample cup holder 7, wherein the sample cups 5 are arranged on the inner side of the signal source 6, the shielding cover 4 is arranged on the outer side of the signal source 6, the sample cup holder 7 is arranged at the bottom of the sample cups 5, and the signal source 6 is connected with the data processing system 2. The shielding case 4 is mainly used for further shielding external signals and ensuring the accuracy of detection data. The main function of the sample cup 5 is to hold the sample to be detected, avoid the introduction of impurity, in order to prevent the sample cup 5 from influencing the test result, the material of the sample cup 5 should be selected from nonmetallic materials. The sample cup holder 7 is mainly used for supporting the sample cup 5 during the detection process and fixing the sample cup 5 in the signal source 6. The signal source 6 detects the voltage variation of the sample in the sample cup 5 by utilizing the internal variation signal, the signal source 6 comprises an energizing coil, a capacitor and a signal generator, the energizing coil and the capacitor are both connected with the signal generator, the sample cup 5 is arranged in the energizing coil, and the signal generator is connected with the data processing system. The signal generator provides a stable signal power supply for a circuit formed by the coil and the capacitor, the data processing system 2 collects signals at two ends of the electrified coil, when a sample is inserted into the sample cup holder, the voltage signal changes compared with the voltage signal before the sample is placed, the voltage signal is processed by the data processing system and then displayed in the interactive display screen, so that single measurement of the sample is realized, keys are stored after measurement, when the test times are accumulated and output H g is needed, the signals are directly displayed after being processed by the data processing system after corresponding function keys are pressed. The change of the voltage signal of the sample is performed by using the electrified coil, so that the lossless detection of the sample is realized, and the uniformity detection efficiency of the sample is effectively improved.
Specifically, the sample cup 5 is first filled with the extracted sample during the test, then the sample cup 5 is left to stand until the surface of the sample in the cup is leveled, and then the sample cup 5 is placed on the sample cup holder 7, so that each sample cup 5 is ensured to be fixed in the signal source 6. Firstly, k coefficient detection is carried out on a sample by a detector through setting of the interactive display screen 1, the interactive display screen 1 transmits a received command to the data processing system 2, the data processing system 2 calls the signal source 6 according to the command, and the change amount of a voltage signal superposed by the sample in the electrified coil is detected. The data processing system 2 calculates the relative standard deviation S r50 of the collected voltage signal change; the uniformity coefficient k was found by linear regression with (0, 100%) and (S r50, 50%) 2 points. Further detect the sample homogeneity of the detected product, place the sample cup 5 that is equipped with the detected product sample on sample glass stand 7, set for through interactive display 1, interactive display 1 transmits the command of receiving to data processing system 2, data processing system 2 invokes signal source 6 according to the command to detect the voltage signal change volume that the detected product sample overlapped in the electric coil. The data processing system 2 calculates a relative standard deviation S r according to the change amount of the voltage signal superimposed by the detected product sample in the power-on coil, and stores the obtained relative standard deviation S r in the data processing system 2. After finishing the detection of all the detected product samples, a detector starts uniformity detection through the interactive display screen 1, and the data processing system 2 receiving the command calculates and obtains uniformity indexes of the detected products according to a calculation formula of uniformity H g, so that the evaluation of the uniformity of the products is realized. In addition, the data processing system 2 is internally provided with databases of k coefficients and uniformity H g of products with different specifications, meanwhile, detection personnel can directly input data to calculate the H g value through the interactive display screen 1, the calculation is quick and clear, the display is concise and clear, the operation personnel can conveniently and rapidly read and judge, the production and application process management and control and the product quality assessment can be effectively guided, the intelligent degree of detection equipment is improved, and meanwhile, the workload of the detection personnel is reduced. The method has the advantages that no shearing, tearing and other acting forces are applied to the sample in the measuring process, no pollution or damage is caused to the detected sample, nondestructive detection can be realized, normal use of the product is not affected, and the method has the characteristics of economy and feasibility.
Other structures and principles are the same as those of embodiment 2.
Example 4
A nondestructive testing device and a testing method for uniformity of a fluid grinding tool detect a sample of an SM-C-PYZ-54 semisolid extrusion abrasive flow product.
S1, randomly selecting different positions according to n=30, respectively extracting a x max sample, a x min sample and a SM-C-PYZ-54 semisolid extruded abrasive material flow sample, and extracting 300+/-0.01 g of sample quantity at a single position.
S2, respectively placing the extracted x max sample, the extracted x min sample and the sample of the abrasive flow product to be tested in a sample cup 5, and standing until the surfaces of the samples are leveled.
S3, placing the sample cup 5 containing the x max sample and the x min sample on the sample cup holder 7, starting k coefficient detection until the k coefficient is generated by clicking the sample until the k coefficient is completely detected.
S4, placing the sample cup 5 containing the sample of the abrasive flow to be tested on the sample cup holder 7 until the sample is completely tested, starting uniformity detection, and clicking to generate H g.
The SM-C-PYZ-90 semi-solid extruded abrasive stream product samples were tested.
S1, randomly selecting different positions according to n=30, respectively extracting a x max sample, a x min sample and a SM-C-PYZ-90 semisolid extruded abrasive material flow sample, and extracting 300+/-0.01 g of sample quantity at a single position.
S2, respectively placing the extracted x max sample, the extracted x min sample and the sample of the abrasive flow product to be tested in a sample cup 5, and standing until the surfaces of the samples are leveled.
S3, placing the sample cup 5 containing the x max sample and the x min sample on the sample cup holder 7, starting k coefficient detection until the k coefficient is generated by clicking the sample until the k coefficient is completely detected.
S4, placing the sample cup 5 containing the sample of the abrasive flow to be tested on the sample cup holder 7 until the sample is completely tested, starting uniformity detection, and clicking to generate H g.
SM-C-PYZ-220 semi-solid extruded abrasive stream product samples were tested.
S1, randomly selecting different positions according to n=30, respectively extracting a x max sample, a x min sample and a SM-C-PYZ-220 semisolid extruded abrasive flow product sample, wherein the sample quantity is 300+/-0.01 g at a single position.
S2, respectively placing the extracted x max sample, the x min sample and the sample of the abrasive flow product to be tested in a sample cup, and standing until the surfaces of the samples are leveled.
S3, placing the sample cup 5 containing the x max sample and the x min sample on the sample cup holder 7, starting k coefficient detection until the k coefficient is generated by clicking the sample until the k coefficient is completely detected.
S4, placing the sample cup 5 containing the sample of the abrasive flow to be tested on the sample cup holder 7 until the sample is completely tested, starting uniformity detection, and clicking to generate H g.
SM-C-PYZ-800 semi-solid extruded abrasive stream product samples were tested.
S1, randomly selecting different positions according to n=30, respectively extracting a x max sample, a x min sample and a SM-C-PYZ-800 semisolid extruded abrasive flow product sample, and extracting 300+/-0.01 g of sample quantity at a single position.
S2, respectively placing the extracted x max sample, the extracted x min sample and the sample of the abrasive flow product to be tested in a sample cup 5, and standing until the surfaces of the samples are leveled.
S3, placing the sample cup 5 containing the x max sample and the x min sample on the sample cup holder 7, starting k coefficient detection until the k coefficient is generated by clicking the sample until the k coefficient is completely detected.
S4, placing the sample cup 5 containing the sample of the abrasive flow to be tested on the sample cup holder 7 until the sample is completely tested, starting uniformity detection, and clicking to generate H g.
SM-C-PYZ-1200 semi-solid extruded abrasive stream product samples were tested.
S1, randomly selecting different positions according to n=30, respectively extracting a x max sample, a x min sample and a SM-C-PYZ-1200 semisolid extrusion abrasive flow product sample, wherein the sample quantity is 300+/-0.01 g at a single position.
S2, respectively placing the extracted x max sample, the extracted x min sample and the sample of the abrasive flow product to be tested in a sample cup 5, and standing until the surfaces of the samples are leveled.
S3, placing the sample cup 5 containing the x max sample and the x min sample on the sample cup holder 7, starting k coefficient detection until the k coefficient is generated by clicking the sample until the k coefficient is completely detected.
S4, placing the sample cup 5 containing the sample of the abrasive flow to be tested on the sample cup holder 7 until the sample is completely tested, starting uniformity detection, and clicking to generate H g.
SM-C-PYZ-2500 semi-solid extruded abrasive stream product samples were tested.
S1, randomly selecting different positions according to n=30, respectively extracting a x max sample, a x min sample and a SM-C-PYZ-2500 semisolid extruded abrasive flow product sample, and extracting 300+/-0.01 g of sample quantity at a single position.
S2, respectively placing the extracted x max sample, the extracted x min sample and the sample of the abrasive flow product to be tested in a sample cup 5, and standing until the surfaces of the samples are leveled.
S3, placing the sample cup 5 containing the x max sample and the x min sample on the sample cup holder 7, starting k coefficient detection until the k coefficient is generated by clicking the sample until the k coefficient is completely detected.
S4, placing the sample cup 5 containing the sample of the abrasive flow to be tested on the sample cup holder 7 until the sample is completely tested, starting uniformity detection, and clicking to generate H g.
As can be seen from fig. 3: the product uniformity Hg of the SM-C-PYZ-54 type, SM-C-PYZ-90 type, SM-C-PYZ-220 type, SM-C-PYZ-800 type, SM-C-PYZ-1200 type and SM-C-PYZ-2500 type semisolid extrusion abrasive flows is more than 95 percent, and the products are uniform.
Other structures and principles are the same as those of embodiment 3.
Example 5
A nondestructive testing device and testing method for uniformity of a fluid grinding tool are provided, sampling times n are set to be 30, x max samples and x min samples are respectively extracted, meanwhile, different 30 positions are randomly selected from samples of a tested abrasive flow product to be sampled, and the sampling quantity of a single position is set to be 300+/-0.01 g. Subsequently, the extracted x max sample, the x min sample and the sample of the abrasive flow product to be tested are respectively placed in a sample cup 5, and are kept stand until the surface of the sample is leveled. Further, a sample cup 5 containing x max and x min samples is placed on a sample cup holder 7, k coefficient detection is started through the interactive display screen 1 until the complete sample is detected, and the interactive display screen 1 is clicked to generate k coefficients. Finally, the sample cup 5 containing the sample of the abrasive flow to be tested is placed on the sample cup holder 7 until the sample is completely tested, the uniformity detection is started, and the control device of the interactive display screen 1 is clicked to generate H g. The product uniformity of semisolid extruded abrasive streams of the SM-C-PYZ-54 type, SM-C-PYZ-90 type, SM-C-PYZ-220 type, SM-C-PYZ-800, SM-C-PYZ-1200, SM-C-PYZ-2500 type were examined according to the above examination procedure.
As shown in FIG. 3, the semi-solid extruded abrasive streams of the SM-C-PYZ-54 type, the SM-C-PYZ-90 type, the SM-C-PYZ-220 type, the SM-C-PYZ-800 type, the SM-C-PYZ-1200 type and the SM-C-PYZ-2500 type have product uniformity Hg of greater than 95% and are uniform.
Other structures and principles are the same as those of embodiment 4.
Example 6
A nondestructive testing device and a testing method for uniformity of a fluid grinding tool detect samples of SM-C-PYZ-54 semisolid extrusion abrasive flow products with different production periods.
S1, randomly selecting different positions according to n=30, respectively extracting SM-C-PYZ-54 semi-solid extruded abrasive material flow product samples of 1/4, 1/2, 3/4, 5/4 and 3/2 production periods, and extracting 300+/-0.01 g of sample quantity at a single position.
S2, respectively placing samples of the abrasive flow products to be tested in 1/4, 1/2, 3/4, 5/4 and 3/2 production periods into a sample cup 5, and standing until the surfaces of the samples are leveled.
S3, placing the sample cup 5 containing the sample of the abrasive flow to be tested with the production period of 1/4 on the sample cup holder 7 until the sample is completely tested, starting uniformity detection, and clicking to generate H g.
S4, repeating S3, and sequentially completing the detection of the tested abrasive flow sample and the generation of H g in the production periods of 1/2, 3/4, 5/4 and 3/2.
As shown in fig. 4, for the SM-C-PYZ-54 semi-solid extruded abrasive stream, product uniformity exhibited a tendency to rise first and stabilize later with extended production time. The selection of production process time can be guided by detecting the uniformity of products in different production periods.
Other structures and principles are the same as those of embodiment 5.
Example 7
A nondestructive testing device and a testing method for uniformity of a fluid grinding tool are provided, wherein the number of times of extraction n is set to be 30, SM-C-PYZ-54 semi-solid extruded abrasive material flow product samples passing through 1/4, 1/2, 3/4, 5/4 and 3/2 production periods are respectively extracted, and the single sample extraction amount is set to be 300+/-0.01 g. Subsequently, samples of the abrasive flow products to be tested in 1/4, 1/2, 3/4, 5/4 and 3/2 production periods are respectively placed in sample cups, and the samples are kept stand until the surfaces of the samples are leveled. After the completion of the standing, sample cups 5 containing samples of abrasive flow at different production cycles are sequentially placed on sample cup holders 7 to detect H g.
As shown in fig. 4, for the SM-C-PYZ-54 semi-solid extruded abrasive stream, product uniformity exhibited a tendency to rise first and stabilize later with extended production time. The selection of production process time can be guided by detecting the uniformity of products in different production periods.
Other structures and principles are the same as those of embodiment 6.
Example 8
A nondestructive testing device and a testing method for uniformity of a fluid grinding tool detect samples extracted from 6 semisolid extruded abrasive flow products of different batches of SM-C-PYZ-1200.
S1, respectively selecting different positions according to n=30, and extracting samples of 6 different batches of SM-C-PYZ-1200 semisolid extrusion abrasive flow products, wherein the sample amount of each position is 300+/-0.01 g.
S2, respectively placing the samples of the abrasive flow products to be tested in sample cups, and standing until the surfaces of the samples are leveled.
S3, placing a sample cup containing the sample of the abrasive flow to be tested on a sample cup holder until the sample is completely tested, starting uniformity detection, and clicking to generate Hg.
S4, repeating the step S3, and sequentially completing the detection of the abrasive flow sample to be tested and the generation of Hg.
Samples of SM-C-PYZ-1200 semi-solid extruded abrasive stream products of different production cycles were tested.
S1, randomly selecting different positions according to n=30, respectively extracting SM-C-PYZ-1200 semi-solid extruded abrasive material flow product samples of 1/4, 1/2, 3/4, 5/4 and 3/2 production periods, and extracting 300+/-0.01 g of sample quantity at a single position.
S2, respectively placing the samples of the abrasive flow products to be tested in the production periods of 1/4, 1/2, 3/4, 5/4 and 3/2 in the sample cup 5, and standing until the surfaces of the samples are leveled.
S3, placing the sample cup 5 containing the sample of the abrasive flow to be tested with the production period of 1/4 on the sample cup holder 7 until the sample is completely tested, starting uniformity detection, and clicking to generate H g.
S4, repeating S3, and sequentially completing the detection of the tested abrasive flow sample and the generation of H g in the production periods of 1/2, 3/4, 5/4 and 3/2.
As shown in fig. 5 and 6, the SM-C-PYZ-1200 semi-solid extruded abrasive stream product has good 6-parallel retest results, i.e., good data reproducibility and stable data; and performing process investigation according to the current system, wherein the full period basically corresponds to the optimal uniformity state, namely the product process and the data are stable. And by combining uniformity data of products with other specifications, improvement of the system structure of the product can be further started, and improvement and control of uniformity indexes are realized. The invention adopting the structure can be used for detecting and evaluating the state of the extruded abrasive flow product, can also be used for comparing, detecting and evaluating and controlling the online state during the production and application of the extruded abrasive flow, provides reliability guidance for the production and application of the extruded abrasive flow product, ensures the quality uniformity of the extruded abrasive flow product, ensures the driving and the navigation for the uniform stability of the processing of the extruded abrasive flow product, improves the quality of a client workpiece, and reduces reworking, repairing and scrapping.
Other structures and principles are the same as those of embodiment 7.
Example 9
A nondestructive testing device and a testing method for uniformity of a fluid grinding tool are provided, wherein the number of extraction times is set to be 30 times, the number of extraction times n is set to be 30 times, 6 different batches of SM-C-PYZ-1200 semisolid extrusion abrasive material flow products are sampled, and the sample quantity is 300+/-0.01 g at a single position. And then, respectively placing the samples of the abrasive flow products to be tested in sample cups, and standing until the surfaces of the samples are leveled. After the standing is completed, a sample cup containing the sample of the abrasive flow to be tested is placed on a sample cup holder for testing until the sample is completely tested, the uniformity detection is started, and the H g is generated by clicking.
Setting the extraction times to be 30 times, randomly selecting different positions, and respectively extracting the SM-C-PYZ-1200 semisolid extrusion abrasive material flow product samples of 1/4, 1/2, 3/4, 5/4 and 3/2 production periods, wherein the sample quantity is 300+/-0.01 g at a single position. After sampling, respectively placing the samples of the abrasive flow products to be tested in 1/4, 1/2, 3/4, 5/4 and 3/2 production periods into sample cups, and standing until the surfaces of the samples are leveled. After the standing is completed, a sample cup containing the sample of the abrasive flow to be tested is placed on a sample cup holder for testing until the sample is completely tested, the uniformity detection is started, and the H g is generated by clicking.
As shown in fig. 5 and 6, the SM-C-PYZ-1200 semi-solid extruded abrasive stream product has good 6-parallel retest results, i.e., good data reproducibility and stable data; and performing process investigation according to the current system, wherein the full period basically corresponds to the optimal uniformity state, namely the product process and the data are stable. And by combining uniformity data of products with other specifications, improvement of the system structure of the product can be further started, and improvement and control of uniformity indexes are realized. The invention adopting the structure can be used for detecting and evaluating the state of the extruded abrasive flow product, can also be used for comparing, detecting and evaluating and controlling the online state during the production and application of the extruded abrasive flow, provides reliability guidance for the production and application of the extruded abrasive flow product, ensures the quality uniformity of the extruded abrasive flow product, ensures the driving and the navigation for the uniform stability of the processing of the extruded abrasive flow product, improves the quality of a client workpiece, and reduces reworking, repairing and scrapping.
Other structures and principles are the same as those of embodiment 8.
The equipment and the method can be popularized and applied to uniformity detection of various paste, emulsion, liquid, solid and other products. Any intellectual property rights, which are created by modifying the parameters of the device or by referencing the principles of the device, are within the scope of the present invention.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (6)
1. A method for non-destructive testing of fluid abrasive uniformity comprising the steps of:
Step one, extracting the raw materials with the largest components in the unmixed raw materials Parts, designated as x max sample, of the minimum component material/>, of the sample was extractedStanding the extracted x max sample and the extracted x min sample respectively until the surfaces of the samples are leveled, wherein n is the sample extraction times and is more than or equal to 7;
step two, testing each x max sample and each x min sample by using a detection device, and calculating according to a test value to obtain a relative standard deviation S r50;
Thirdly, carrying out linear regression by using the absolute uniform state coordinates (0, 100%) and the 50% non-uniform state coordinates (S r50, 50%) to obtain a uniformity coefficient k;
the state of completely and uniformly mixing the samples is an absolute uniform state, and under the absolute uniform state:
Sr＝0,Hg＝100％；
step four, randomly selecting n different positions from the mixed tested samples to sample to obtain n tested samples, and respectively standing the tested samples until the surfaces of the tested samples are leveled;
step five, placing each tested sample in a detection device for testing, and calculating a relative standard deviation S r according to a test result;
Step six, calculating to obtain uniformity indexes of the detected products according to a calculation formula of uniformity H g;
The formula for uniformity H g is:
Hg＝1-k×Sr；
Wherein k is a uniformity coefficient, H g is uniformity of the tested product, and S r is relative standard deviation of the tested product;
Step seven, when the uniformity H g is more than or equal to 95.0%, judging that the detected sample is uniform, if H g is less than 95.0%, judging that the detected sample is non-uniform, checking all detection and production elements at the moment, determining the reason of non-uniformity, and taking targeted measures;
The average value state of the test values of the x max sample and the x min sample is 50% non-uniform state, and the average value state of the test values is 50% non-uniform state: h g = 50%.
2. The method of claim 1, wherein the relative standard deviation S r is formulated as:
Wherein x i is the test value of the ith sample of the tested product, For the average value of the test values of the tested products, n is the sampling number of the tested products.
3. A nondestructive testing device for the uniformity of a fluid grinding tool according to claim 1 or 2, comprising an interactive display screen (1), a data processing system (2), a housing (3) and a detection system, wherein the interactive display screen (1) and the detection system are connected with the data processing system (2);
the interactive display screen (1) is arranged on the outer side of the shell (3), and the data processing system (2) and the detection system are both arranged inside the shell.
4. A nondestructive testing device for a method of nondestructive testing of fluid grinding apparatus uniformity according to claim 3, wherein the testing system comprises a shielding cover (4), at least two sample cups (5), a signal source (6) and a sample cup holder (7), the sample cup (5) is arranged inside the signal source (6), the shielding cover (4) is arranged outside the signal source (6), the sample cup holder (7) is arranged at the bottom of the sample cup (5), and the signal source (6) is connected with the data processing system (2).
5. The nondestructive testing device for fluid grinding apparatus uniformity nondestructive testing method according to claim 4, wherein the signal source (6) comprises an energizing coil, a capacitor and a signal generator, wherein the energizing coil and the capacitor are connected with the signal generator, and the sample cup (5) is disposed inside the energizing coil, and the signal generator is connected with the data processing system.
6. Nondestructive testing device for fluid grinding apparatus uniformity according to claim 4 or 5, characterized in that the material of the sample cup (5) is a non-metallic material.
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