KR20210078070A - Calibration system for hardness meter - Google Patents

Abstract

The present invention relates to a verifying method for a hardness meter, which is able to verify the soundness of the hardness meter based on a standard sample in order to provide a verifying system for a hardness meter which is able to reduce the time required for correcting the hardness meter and secure reliability on the correction data. The verifying method for the hardness meter comprises: a step of supporting a first standard sample with the hardness meter; a step of inputting the information on the hardness meter through a verifying program linked to the hardness meter; a step of inputting the information on the first standard sample through the verifying program, and acquiring a measurement value on the first standard sample from the hardness meter; a step of removing the first standard sample from the hardness meter, and supporting a second standard sample with the hardness meter; a step of inputting the information on the second standard sample through the verifying program, and acquiring a measurement value on the second standard sample from the hardness meter; and a step of calibrating the hardness meter based on a unique value of the first standard sample and the second standard sample and the measurement values on the first standard sample and the second standard sample, which are acquired from the hardness meter.

Description

Hardness meter verification system {CALIBRATION SYSTEM FOR HARDNESS METER}

The present invention relates to a hardness measuring instrument verification system, and more particularly, to a hardness measuring instrument verification system capable of confirming the soundness of a hardness measuring instrument based on a standard specimen.

In general, in various industrial environments such as aviation facilities and heat treatment plants, hardness measuring instruments for measuring hardness of parts and materials are used. The hardness measuring device measures the hardness of the measured object based on a mechanical contact or a light source toward a fixed measurement object.

The prior art for such a hardness measuring device has already been disclosed by the Republic of Korea Utility Model Registration No. 0337529 (hardness measuring instrument, 2005.06.10.). The registered design discloses a feature of measuring the hardness of the measurement object supported on the jig using a measuring system.

In order to satisfy ASTM E18 and customer requirements, this hardness tester is periodically checked for soundness. In particular, in the field of aviation, daily calibration is performed for hardness measuring instruments. In this daily calibration, a plurality of standard specimens are repeatedly verified, and the hardness measuring device is corrected according to the verification. In addition, data values for repeated verification are manually input and stored. Accordingly, there is a problem in that excessive manpower is input in the verification of a plurality of standard specimens and the calibration process of the hardness measuring device. In addition, due to the artificial recording error, the reliability of the measured value is lowered, and it is difficult to check whether the inspection is performed by an approved inspector.

Republic of Korea Registered Utility Model No. 0337529 (Hardness measuring instrument, 2005.06.10.)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hardness measuring instrument verification system capable of reducing the calibration time of the hardness measuring instrument and securing reliability for the correction data.

The hardness measuring device verification method according to the present invention is a hardness measuring device verification method for verifying the soundness of a hardness measuring device based on a standard specimen, through the steps of supporting the first standard specimen to the hardness measuring device and a verification program linked to the hardness measuring device Inputting information about the hardness measuring device and inputting information about the first standard specimen through the verification program to obtain a measurement value for the first standard specimen from the hardness measuring device, and from the hardness measuring device Departing the first standard specimen and supporting the second standard specimen in the hardness measuring instrument, and inputting information about the second standard specimen through the verification program, the measured value for the second standard specimen from the hardness measuring instrument obtaining and calibrating the hardness measuring device based on the eigenvalues of the first and second standard specimens and the measurement values for the first and second standard specimens obtained from the hardness measuring device.

In obtaining the measurement values for the first and second standard specimens, hardness measurement for each of the first and second standard specimens may be repeatedly performed.

In the step of inputting information about the hardness measuring device, input operating environment information including at least one of a device name, communication port, bit/sec, stop bit, and flow control for the hardness measuring device, and the first and second In the information input for each standard specimen, at least one of a used scale, an indent number, and a standard specimen specification may be input.

The standard specimen specification includes at least one of a specimen serial number, high and low values of the specimen, error rate, and repetition value, and the error rate and repetition value may input values specified in the specification of ASTM E18.

The hardness measuring instrument verification method may further include outputting and storing final result values for the first and second standard specimens in Excel format before the calibrating step.

On the other hand, the hardness measuring instrument verification system according to the present invention is a hardness measuring instrument verification system that verifies the soundness of the hardness measuring instrument based on the standard specimen, the hardness measuring instrument supporting the standard specimen and measuring the hardness of the standard specimen, and the hardness measuring instrument The hardness measuring device measures the hardness of the standard specimen based on the information of the standard specimen that is interlocked and input by the user, and based on the intrinsic value of the standard specimen and the measurement value for the standard specimen obtained from the hardness measurement device and a control unit for causing the path finder to be calibrated.

The hardness tester verification system according to the present invention has the effect of significantly shortening the calibration time, securing accurate data, and at the same time making arbitrary correction impossible.

In addition, the hardness tester verification system according to the present invention has the effect of preventing data errors, increasing productivity due to automation, and advancing hardness measurement inspection.

The technical effects of the present invention as described above are not limited to the effects mentioned above, and other technical effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a conceptual diagram showing a hardness measuring device verification system according to this embodiment,
2 is a flowchart illustrating performing daily calibration by using the hardness measuring instrument verification system according to the present embodiment;
3 to 8 are diagrams illustrating a verification program according to the present embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present embodiment is not limited to the embodiment disclosed below, but may be implemented in various forms with each other, and only this embodiment makes the disclosure of the present invention complete, and the scope of the invention to those of ordinary skill in the art It is provided for complete disclosure. The shapes of elements in the drawings may be exaggerated for more clear explanation, and elements indicated by the same reference numerals in the drawings mean the same elements.

1 is a conceptual diagram showing a hardness measuring device verification system according to the present embodiment.

As shown in FIG. 1 , the hardness measuring device verification system according to the present embodiment (hereinafter, 100 or less, referred to as a verification system) may be used for daily calibration for a plurality of hardness measuring devices 200 .

Calibration of the conventional hardness measuring device 200 takes 220 hours per year. Daily calibration takes 50 minutes per device, and it takes 48 hours per year to correct errors caused by handwriting. Also, it takes 48 hours per year to correct errors due to calculation errors. On the other hand, in the case of the verification system 100 according to the present embodiment, it takes 13 minutes for daily calibration, 57.2 hours per year, and no error correction time.

The verification system 100 may include a plurality of hardness measuring instruments 200 and a control unit 300 .

A plurality of hardness measuring instruments 200 measure the hardness of the standard specimen (10). Here, the standard specimen may be prepared as HRB, HRE, HR15T, HRH, HRC and HR15N, but the type of the standard specimen 10 is not limited.

The plurality of hardness measuring instruments 200 measure the hardness of the standard specimen 10 for soundness verification prior to measuring the hardness of the measurement object. Then, the calibration is performed by matching the measured result value and the intrinsic value of the standard specimen 10 .

And the control unit 300 is linked to a plurality of hardness measuring instruments (200).

For example, the control unit 300 may be linked to a plurality of hardness measuring instruments 200 through a communication environment (RS232 modem). Accordingly, the control unit 300 performs a process for verification of the hardness measuring device 200, and automatically calculates and stores the related data obtained from the plurality of hardness measuring devices 200, and can recognize it to the user.

The control unit 300 may include a PC and a monitor, but the type of the control unit 300 is not limited. In addition, the control unit 300 may be provided as an operation unit 310 , a database 320 , and an output unit 330 , but is not limited thereto.

Hereinafter, with reference to the accompanying drawings, a method of performing verification of a plurality of hardness measuring devices according to the verification system according to the present embodiment will be described in detail. However, detailed descriptions of the above-described components will be omitted and the same reference numerals will be assigned to them.

2 is a flowchart illustrating performing daily calibration by using the hardness measuring instrument verification system according to the present embodiment.

As shown in Fig. 2, the verification system 100 according to this embodiment collects and stores data for verification of a plurality of hardness measurement devices 200, and at the same time, the hardness measurement device 200 is calibrated based on the data. can

To this end, the verification system 100 allows a series of processes for verification of the plurality of hardness measuring instruments 200 through the verification program 400 stored in the control unit 300 to proceed.

More specifically, the user supports the first standard specimen 11 on the plurality of hardness measuring instruments 200, so that each of the plurality of hardness measuring instruments 200 prepares to obtain the hardness for the first standard specimen 11 do (S100). However, in the following, the measurement of the first standard specimen 11 and the second standard specimen 12 is described as an example, but it is revealed that measurements on three or more standard specimens 10 can be performed in the daily calibration. put

First, the user operates the verification program 400 so that the hardness measurement for the first standard specimen 11 is performed (S200). Here, the user inputs information about the first standard specimen 11 through the verification program 400 .

In this case, the user accesses the verification program 400 through the control unit 300 . The control unit 300 verifies the user based on personal information input by the user, and determines whether the user can access the verification program 400 . Here, the user may be a pre-approved inspector.

Thereafter, the user inputs information about the hardness measuring device 200 through the verification program 400 . For example, the information on the hardness measuring device 200 may include operating environment information such as a device name, communication port, data service, bit/sec, stop bit, and flow control for the hardness measuring device 200 . And the user performs measurement after inputting measurement information and data output information for verifying the hardness measuring device 200 .

Accordingly, the plurality of hardness measuring instruments 200 recognizes whether the seated standard specimen 10 is the first standard specimen 11 and proceeds to measure the hardness corresponding to the first standard specimen 11 . In this case, the verification program 400 may guide the hardness measurement process of the first standard specimen 11 for each of the plurality of hardness measuring instruments 200 .

And when the measurement of the first standard specimen 11 is started, the verification system 100 stores the information obtained from the plurality of hardness measuring instruments 200 and outputs the result value through the verification program 400 . At this time, the verification program 400 may output the result value in Excel format, and notify the user when a problem occurs.

For example, the operation unit 310 of the verification system 100 acquires and calculates information on the first standard specimen 11 in real time in the acquisition of the result value so that the result value is output. In this case, when the result value is out of the allowable tolerance, the output unit 330 may output the result value in red color.

On the other hand, when the repeated measurement of the first standard specimen 11 is completed, the user separates the first standard specimen 11 from the hardness measuring instrument 200 and supports the second standard specimen 12 (S300). And the verification system 100 proceeds to measure the second standard specimen based on the information input about the second standard specimen 12 (S400).

Finally, when the measurement is completed for each of the first standard specimen 11 and the second standard specimen 12, the user calibrates the plurality of hardness measuring instruments 200 (S500). In this case, the calibration of the hardness measuring device 200 may be made based on the intrinsic value of the standard specimen 10 and the measurement value obtained from the hardness measuring device 200 . Here, the calibration of the hardness measuring device 200 may be automatically performed through the verification system 100 , but the calibration may be performed in the hardness measuring device 200 itself by a user's manipulation.

Meanwhile, hereinafter, the process progress for one standard specimen through the verification program 400 according to the present embodiment will be described in detail. However, detailed descriptions of the above-described components will be omitted and the same reference numerals will be assigned to them.

3 to 8 are diagrams illustrating a verification program according to the present embodiment.

3 to 8 , in this embodiment, the user accesses the verification program 400 through the control unit 300 .

Accordingly, the verification program 400 may verify the user and grant access rights to the user. In addition, the verification program 400 may output icons such as user management 410 , hardness meter setting 420 , measurement setting 430 , data output 440 , and data measurement 450 .

Accordingly, when the user accesses the user management 410 , the user can add or delete a user. In this case, in the verification program 400 , when a user name, company number, password, and seal number are input, a registration date may be automatically generated.

Thereafter, the user may access the durometer setting 420 for daily calibration. In the hardness meter setting 420 , a plurality of hardness measuring instruments 200 may be managed. At this time, the user inputs operating environment information. For example, at this time, the operating environment information input by the user may be a device name, communication port, data bit, bit/sec, stop bit and flow control for the hardness measuring device 200 .

Thereafter, when the hardness meter setting is completed, the user may access the measurement setting 430 . At this time, the user may input a used scale, an indentor number (Indentor NO), a standard specimen specification, and the like. More specifically, the usage scale input by the user may be HRC, HRB, HRE, HR15T, HRF, or the like. However, this is for explaining the present embodiment, and the used scale can be changed to HRB, HRE, HR15T, HRH, HRC and HR15N or variously.

Thereafter, when the input of the used scale is completed, the user inputs an indent number. And the user inputs the specification of the standard specimen 10, that is, the High & Low specification. Here, the high & low specifications of the standard specimen 10 may be a specimen serial number, a specimen value, an error rate, and a repeatability value. Here, the high value input is selected from the high measurement value of the product to be measured, and the low value input is selected from the lowest value of the product to be measured, about ±10. And in the input of error and repetition values, enter the values specified in the specification of ASTM E18.

The user can then access data measurement 450 to proceed with the measurement. Here, the user selects the equipment and scale to be measured and proceeds with measurement. Accordingly, the scale selected in the verification program 400 is automatically changed to the scale in the hardness measuring device 200, and the final result value as shown in Table 1 below can be obtained as Excel data.

Date Used
Scale Use Indentor
No Standard
No/Value Specimen value permit
Error permit
repeatability Measured Values Average Error
Avr-STD repeatability
Max-Min Verified
by Remark 1 time Episode 2 3rd time 2019/08/30 HRB #95620 16R26840 High 94.76 ± 1.0 1.5 94.7 94.9 94.9 94.83 0.07 0.2 KAI HC 002 Specimen replacement 16A27357 Low 73.59 ± 1.0 1.5 73.4 73.5 73.5 73.47 -0.12 0.1 KAI HC 002 Specimen replacement 2019/08/30 HR15T #95620 16A27375 High 84.26 ± 1.0 1.5 84.0 83.9 84.2 84.03 -0.23 0.3 KAI HC 002 15S92598 Low 66.70 ± 1.5 2.0 66.8 67.0 66.7 66.83 0.13 0.3 KAI HC 002 2019/08/30 HRE #93482 16P29089 High 92.18 ± 1.0 1.5 92.5 92.4 92.3 92.40 0.22 0.2 KAI HC 002 15G05487 Low 69.41 ± 1.0 1.5 69.3 69.3 69.2 69.27 -0.14 0.1 KAI HC 002

Referring to Table 1, Date is the hardness measurement verification date, and the verification program 400 automatically outputs the inspection date. In addition, the used scale is displayed as a scale selected in the data measurement 450 using the used scale input in the measurement setting 430 of the verification program 400 . As the used indentor No., an intent number corresponding to the used scale input in the measurement setting 430 of the verification program 400 is displayed. In addition, Standard No/Value indicates the high & low specimen serial number of the standard specimen 10 input to the measurement setting of the verification program 400 . And as for the specimen value, the high value and the low value of the standard specimen 10 input to the measurement setting 430 of the verification program 400 are displayed. It is entered as ㅁ10 in . In addition, the allowable error is an allowable error value input to the measurement setting 430 of the verification program 400 and a value required by ASTM E18 is input. In addition, the allowable repeatability is an allowable repeatability value input in the measurement setting of the verification program 400, and a value required by ASTM E18 is input.

Meanwhile, the Measured Values are measured three times after data measurement, and the values measured by the hardness measuring device are transmitted and input. In addition, the average value measured three times is calculated and input. Error Avr-STD is calculated and entered by excluding the standard specimen value from the measurement average value. In addition, for the Repeatability Max-Min, the deviation between the highest value and the lowest value among the values measured three times is calculated and input.

On the other hand, Verified by is the user's seal input in the user management 410 of the verification program 400 is input. And the remark is displayed by manually inputting specimen replacement and other special items.

Accordingly, the user may store the data and perform daily calibration based on the data.

Meanwhile, the data may be output through the data output 440 . Thus, the user can access data output 440 . And the user inputs a date for data output on the data output screen. At this time, the user selects the desired equipment among the plurality of equipment, that is, the hardness tester among the plurality of hardness testers and inputs the date. Accordingly, data of the corresponding date is output to facilitate data management.

Accordingly, the hardness measuring instrument verification system according to the present invention has the effect that it is impossible to arbitrarily modify the calibration time significantly and secure accurate data.

In addition, the hardness tester verification system according to the present invention has the effect of preventing data errors, increasing productivity due to automation, and advancing hardness measurement inspection.

One embodiment of the present invention described above and shown in the drawings should not be construed as limiting the technical spirit of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can improve and change the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the protection scope of the present invention as long as it is apparent to those of ordinary skill in the art.

10: standard specimen
11: 1st standard specimen
12: 2nd standard specimen
100: hardness measuring instrument verification system
200: hardness measuring instrument
300: control unit
400: verification program

Claims (6)

In the hardness tester verification method for verifying the soundness of the hardness tester based on the standard specimen,
supporting the first standard specimen in a hardness measuring device;
inputting information about the hardness measuring device through a verification program linked to the hardness measuring device;
obtaining a measurement value for the first standard specimen from the hardness measuring device by inputting information on the first standard specimen through the verification program;
separating the first standard specimen from the hardness measuring instrument and supporting a second standard specimen in the hardness measuring instrument;
obtaining a measurement value for the second standard specimen from the hardness measuring device by inputting information on the second standard specimen through the verification program; and
A method of verifying a hardness measuring device comprising calibrating the hardness measuring device based on the eigenvalues of the first and second standard specimens and the measured values for the first and second standard specimens obtained from the hardness measuring device.
According to claim 1,
In the acquisition of the measurement values for the first and second standard specimens,
Hardness measuring instrument verification method, characterized in that repeatedly performing the hardness measurement for each of the first and second standard specimens.
3. The method of claim 2,
In the step of inputting information about the hardness measuring instrument,
Input operating environment information including at least one of a device name, communication port, bit/sec, stop bit, and flow control for the hardness measuring device,
In the information input for each of the first and second standard specimens,
Hardness measuring instrument verification method, characterized in that inputting at least one of the used scale, indent number, and standard specimen specification.
4. The method of claim 3,
The standard specimen specifications are
Include at least one of the specimen serial number, high and low values of the specimen, error rate, and repetition value,
The error rate and repetition value are
A method of verifying a hardness measuring instrument, characterized in that inputting the value specified in the specification of ASTM E18.
According to claim 1,
Before the calibration step,
Hardness measuring instrument verification method, characterized in that it further comprises the step of outputting and storing the final result values for the first and second standard specimens in Excel format.
In the hardness tester verification system that verifies the soundness of the hardness tester based on the standard specimen,
a hardness measuring device supporting the standard specimen and measuring the hardness of the standard specimen; and
The hardness measuring device is linked to the hardness measuring device and based on the information of the standard specimen input by the user, the hardness measuring device measures the hardness of the standard specimen, and the intrinsic value of the standard specimen and the standard specimen obtained from the hardness measuring device Hardness measuring instrument verification system including a control unit for calibrating the path measuring device based on the value.

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