CN105954132A - Vickers hardometer and hardness measurement and correction method - Google Patents
Vickers hardometer and hardness measurement and correction method Download PDFInfo
- Publication number
- CN105954132A CN105954132A CN201610281920.4A CN201610281920A CN105954132A CN 105954132 A CN105954132 A CN 105954132A CN 201610281920 A CN201610281920 A CN 201610281920A CN 105954132 A CN105954132 A CN 105954132A
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- hardness
- vickers
- standard block
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- 238000012937 correction Methods 0.000 title claims abstract description 26
- 238000007542 hardness measurement Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title abstract description 8
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 238000002715 modification method Methods 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 13
- 230000003321 amplification Effects 0.000 claims description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- -1 Achates Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/42—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/62—Manufacturing, calibrating, or repairing devices used in investigations covered by the preceding subgroups
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0076—Hardness, compressibility or resistance to crushing
- G01N2203/0078—Hardness, compressibility or resistance to crushing using indentation
- G01N2203/008—Residual indentation measurement
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0098—Tests specified by its name, e.g. Charpy, Brinnel, Mullen
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
- G01N2203/0647—Image analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Landscapes
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Manufacturing & Machinery (AREA)
- Engineering & Computer Science (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a Vickers hardometer. The Vickers hardometer comprises a rack. The rack comprises an upper rack body, a lower rack body, a connecting body and a storage compartment. The upper rack body and the lower rack body are arranged up and down at an interval. The connecting body connects the upper rack body with the lower rack body. At least two standard hardness blocks different in hardness are placed in the storage compartment. An upwardly projecting lifting bench is arranged on the lower rack body. The top end of the lifting bench is provided with an object bench for placing a to-be-tested object. A pressure head that is protruding towards the object bench, and a drive device used for driving the pressure head are arranged on the upper rack body. The invention also provides a hardness measurement and correction method. During the measurement of the above Vickers hardometer, firstly, a correction coefficient is obtained through detecting the hardness of each standard hardness block. Secondly, the detection hardness value of the to-be-tested object is obtained through detecting the to-be-tested object. Thirdly, the detection hardness value is corrected based on the correction coefficient, so that the actual hardness value of the to-be-tested object is obtained. The Vickers hardometer is convenient to use. The hardness measurement and correction method is simple in correction process and accurate in correction result.
Description
Technical field
The present invention relates to a kind of Vickers and hardness measurement modification method.
Background technology
Vickers is mainly used in test specimen small, slim and surface is oozed, part after plating and the fragile material such as Achates, glass carry out hardness measurement.Owing to test force is the least, impression is the least, and the outward appearance of test specimen and serviceability can be unaffected, are therefore widely used.
But, existing Vickers after being used for a while, because of the problem such as focus offset, amplification deviation or loading force change of microscope objective, will result in measurement error.
In view of this, it is necessary to existing Vickers and hardness measurement modification method are improved, to solve the problems referred to above.
Summary of the invention
It is an object of the invention to provide a kind of Vickers and hardness measurement modification method, with the problem solving to produce error after existing Vickers uses a period of time.
For achieving the above object, the invention provides a kind of Vickers, described Vickers includes frame, described frame includes upper and lower spaced upper frame and lower frame, connect room between upper frame and the connector of lower frame and storing, between described storing, indoor are placed with at least two pieces of different standards block of hardness of hardness, the lifting platform of upwards projection it is provided with on described lower frame, the top of described lifting platform is provided with to shelve the object placing platform of article to be measured, the pressure head towards described object placing platform projection it is provided with on described upper frame, in order to drive the driving means of described pressure head, described Vickers is when measuring, first pass through examination criteria block of hardness and obtain correction factor, detect article to be measured again and obtain detection hardness, by correction factor, detection hardness number is modified, obtain actual hardness value.
As a further improvement on the present invention, described standard block of hardness includes the first standard block of hardness that hardness is hv2500 and the second standard block of hardness that hardness is hv600.
As a further improvement on the present invention, described upper frame is additionally provided with the microscope objective of in-built CCD image capturing system.
As a further improvement on the present invention, described machine frame inside is provided with memory module and processing module.
The present invention also provides for a kind of hardness measurement modification method, and described hardness measurement modification method comprises the steps:
Use above-mentioned Vickers, the first standard block of hardness is placed on object placing platform, control lifting platform and be increased to predeterminated position；
Controlling driving means drives described pressure head to be pressed on described first standard block of hardness with predetermined loading force, continues to drive described pressure head away from the first standard block of hardness with extrusion image on the first standard block of hardness, control driving means in 30 seconds；
Making microscope objective be directed on the first standard block of hardness the image extruded, gather image by ccd image acquisition system, and be stored into memory module, processing module measures the catercorner length of image, is designated as Lt1；
Control lifting platform and drop to original position, and take the first standard block of hardness away；
Second standard block of hardness is placed on object placing platform, controls lifting platform and be increased to predeterminated position；
Controlling driving means drives described pressure head to be pressed on described second standard block of hardness with predetermined loading force, continues to drive described pressure head away from the second standard block of hardness with extrusion image on the second standard block of hardness, control driving means in 30 seconds；
Making microscope objective be directed on the second standard block of hardness the image extruded, gather image by ccd image acquisition system, and be stored into memory module, processing module measures the catercorner length of image, is designated as Lt2；
Control lifting platform and drop to original position, and take the second standard block of hardness away；
Processed Lt1 and Lt2 obtained obtain correction amplification coefficient A by processing module and revise side-play amount B.
As a further improvement on the present invention, formula A=(Lt1/Ld1-Lt2/Ld2)/(Lt1-Lt2) and B=Lt1/Ld1-(Lt1/Ld1-Lt2/Ld2) * Ld1/ (Ld1-Ld2) is utilized to obtain correction amplification coefficient A and revise side-play amount B, wherein, Ld1 is catercorner length in hardness hv2500 correspondence Vickers hardness number table, and Ld2 is catercorner length in hardness hv600 correspondence Vickers hardness number table.
As a further improvement on the present invention, utilizing formula K=ALn+B to obtain adjusted coefficient K, wherein Ln is the catercorner length utilizing described Vickers to measure the image extruded on described article to be measured；
Utilize Vickers hardness number table to find hardness number HV that corresponding catercorner length is Ln, utilize formula HVn=K*HV, obtain actual hardness value HVn.
The invention has the beneficial effects as follows: the Vickers of the present invention, by arranging room between storing, and indoor arrange the standard block of hardness that hardness is different between storing, such that it is able to when measuring, first pass through examination criteria block of hardness and obtain correction factor, detect article to be measured again and obtain detection hardness, by correction factor, detection hardness is modified, it is thus achieved that actual hardness value, detection is accurately, the hardness determination modification method of the present invention, makeover process is simple, and correction result is accurate.
Accompanying drawing explanation
Fig. 1 is the Facad structure schematic diagram of Vickers of the present invention；
Fig. 2 is the side structure schematic diagram of Vickers of the present invention.
Detailed description of the invention
In order to make the object, technical solutions and advantages of the present invention clearer, describe the present invention with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1 to Figure 2, the Vickers 100 of the present invention includes frame 10.
Described frame 10 includes upper and lower spaced upper frame 1 and lower frame 2, connects room 4 between upper frame 1 and the connector 3 of lower frame 2 and storing.Described frame 10 is internally provided with memory module (not shown) and processing module (not shown).Described memory module is in order to store data, and described processing module is in order to process data.
Being provided with the lifting platform 21 of upwards projection on described lower frame 2, the top of described lifting platform 21 is provided with to shelve the object placing platform 22 of article 200 to be measured.
The pressure head 11 towards the projection of described object placing platform 22 it is provided with, in order to drive the driving means (not shown) of described pressure head 11, the microscope objective 12 of in-built CCD image capturing system (not shown) on described upper frame 1.Being additionally provided with guidance panel 13 and display floater 14 on described upper frame 1, described display floater 14 is in order to show testing result, and described guidance panel 13 is provided with button, in order to control detection process.
Described pressure head 11 in order to extrude article 200 to be measured with on article 200 to be measured extrude image, described microscope objective 12 is in order to gather image.
Between described storing, room 4 can be arranged on optional position on described upper frame 1, lower frame 2 or connector 3, is placed with at least two pieces of different standards block of hardness of hardness between described storing in room 4.Described standard block of hardness includes the first standard block of hardness (not shown) that hardness is hv2500 and the second standard block of hardness (not shown) that hardness is hv600.The hardness of major part article 200 to be measured is between hv600 ~ hv2500 refers to, therefore selects such first standard block of hardness and the second standard block of hardness, it is ensured that the result of correction is accurate.
Described Vickers 100, when measuring, is first passed through examination criteria block of hardness and obtains correction factor, then detect article 200 to be measured acquisition detection hardness, be modified detection hardness by correction factor, export actual hardness.Concrete hardness measurement modification method comprises the steps:
Use above-mentioned Vickers 100, the first standard block of hardness is placed on object placing platform 22, control lifting platform 21 and be increased to predeterminated position；
Controlling driving means drives described pressure head 11 to be pressed on described first standard block of hardness with predetermined loading force, continues to drive described pressure head 11 away from the first standard block of hardness with extrusion image on the first standard block of hardness, control driving means in 30 seconds；
Making microscope objective 12 be directed on the first standard block of hardness the image extruded, gather image by ccd image acquisition system, and be stored into memory module, processing module measures the catercorner length of image, is designated as Lt1；
Control lifting platform 21 and drop to original position, and take the first standard block of hardness away；
Second standard block of hardness is placed on object placing platform 22, controls lifting platform 21 and be increased to predeterminated position；
Controlling driving means drives described pressure head 11 to be pressed on described second standard block of hardness with predetermined loading force, continues to drive described pressure head 11 away from the second standard block of hardness with extrusion image on the second standard block of hardness, control driving means in 30 seconds；
Making microscope objective 12 be directed on the second standard block of hardness the image extruded, gather image by ccd image acquisition system, and be stored into memory module, processing module measures the catercorner length of image, is designated as Lt2；
Control lifting platform 21 and drop to original position, and take the second standard block of hardness away；
Processed Lt1 and Lt2 obtained obtain correction amplification coefficient A by processing module and revise side-play amount B.
Formula is utilized to seek correction amplification coefficient A and revise side-play amount B, A=(Lt1/Ld1-Lt2/Ld2)/(Lt1-Lt2) and B=Lt1/Ld1-(Lt1/Ld1-Lt2/Ld2) * Ld1/ (Ld1-Ld2), wherein, Ld1 is catercorner length in hardness hv2500 correspondence Vickers hardness number table, and Ld2 is catercorner length in hardness hv600 correspondence Vickers hardness number table.
Utilizing formula K=ALn+B to obtain adjusted coefficient K, wherein Ln is the catercorner length utilizing described Vickers 100 to measure the image extruded on described article to be measured 200；
Utilize Vickers hardness number table to find hardness number HV that corresponding catercorner length is Ln, utilize formula HVn=K*HV, obtain actual hardness value HVn.
The Vickers 100 of the present invention, by arranging room 4 between storing, and the standard block of hardness that hardness is different is set in room 4 between storing, such that it is able to when measuring, first pass through examination criteria block of hardness and obtain correction factor, detect article 200 to be measured again and obtain detection hardness, by correction factor, detection hardness is modified, it is thus achieved that actual hardness value, detection is accurately, the hardness determination modification method of the present invention, makeover process is simple, and correction result is accurate.
Above example is only in order to illustrate technical scheme and unrestricted, although the present invention being described in detail with reference to preferred embodiment, it will be understood by those within the art that, technical scheme can be modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention.
Claims (7)
1. a Vickers, it is characterized in that: described Vickers includes frame, described frame includes upper and lower spaced upper frame and lower frame, connect room between upper frame and the connector of lower frame and storing, between described storing, indoor are placed with at least two pieces of different standards block of hardness of hardness, the lifting platform of upwards projection it is provided with on described lower frame, the top of described lifting platform is provided with to shelve the object placing platform of article to be measured, the pressure head towards described object placing platform projection it is provided with on described upper frame, in order to drive the driving means of described pressure head, described Vickers is when measuring, first pass through examination criteria block of hardness and obtain correction factor, detect article to be measured again and obtain detection hardness, by correction factor, detection hardness number is modified, obtain actual hardness value.
Vickers the most according to claim 1, it is characterised in that: described standard block of hardness includes the first standard block of hardness that hardness is hv2500 and the second standard block of hardness that hardness is hv600.
Vickers the most according to claim 2, it is characterised in that: described upper frame is additionally provided with the microscope objective of in-built CCD image capturing system.
Vickers the most according to claim 3, it is characterised in that: described machine frame inside is provided with memory module and processing module.
5. a hardness measurement modification method, it is characterised in that: described hardness measurement modification method comprises the steps:
Use Vickers as claimed in claim 4, the first standard block of hardness is placed on object placing platform, control lifting platform and be increased to predeterminated position；
Controlling driving means drives described pressure head to be pressed on described first standard block of hardness with predetermined loading force, continues to drive described pressure head away from the first standard block of hardness with extrusion image on the first standard block of hardness, control driving means in 30 seconds；
Making microscope objective be directed on the first standard block of hardness the image extruded, gather image by ccd image acquisition system, and be stored into memory module, processing module measures the catercorner length of image, is designated as Lt1；
Control lifting platform and drop to original position, and take the first standard block of hardness away；
Second standard block of hardness is placed on object placing platform, controls lifting platform and be increased to predeterminated position；
Controlling driving means drives described pressure head to be pressed on described second standard block of hardness with predetermined loading force, continues to drive described pressure head away from the second standard block of hardness with extrusion image on the second standard block of hardness, control driving means in 30 seconds；
Making microscope objective be directed on the second standard block of hardness the image extruded, gather image by ccd image acquisition system, and be stored into memory module, processing module measures the catercorner length of image, is designated as Lt2；
Control lifting platform and drop to original position, and take the second standard block of hardness away；
Processed Lt1 and Lt2 obtained obtain correction amplification coefficient A by processing module and revise side-play amount B.
Hardness measurement modification method the most according to claim 5, it is characterized in that: utilize formula A=(Lt1/Ld1-Lt2/Ld2)/(Lt1-Lt2) and B=Lt1/Ld1-(Lt1/Ld1-Lt2/Ld2) * Ld1/ (Ld1-Ld2) obtain correction amplification coefficient A and revise side-play amount B, wherein, Ld1 is catercorner length in hardness hv2500 correspondence Vickers hardness number table, and Ld2 is catercorner length in hardness hv600 correspondence Vickers hardness number table.
Hardness measurement modification method the most according to claim 6, it is characterised in that: utilizing formula K=ALn+B to obtain adjusted coefficient K, wherein Ln is the catercorner length utilizing described Vickers to measure the image extruded on described article to be measured；
Utilize Vickers hardness number table to find hardness number HV that corresponding catercorner length is Ln, utilize formula HVn=K*HV, obtain actual hardness value HVn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610281920.4A CN105954132B (en) | 2016-04-28 | 2016-04-28 | Vickers and hardness measurement modification method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610281920.4A CN105954132B (en) | 2016-04-28 | 2016-04-28 | Vickers and hardness measurement modification method |
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| CN105954132A true CN105954132A (en) | 2016-09-21 |
| CN105954132B CN105954132B (en) | 2019-01-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110823732A (en) * | 2019-09-29 | 2020-02-21 | 彩虹显示器件股份有限公司 | Correction method for Vickers hardness test deviation of electronic glass |
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| CN103364291A (en) * | 2012-03-27 | 2013-10-23 | 株式会社三丰 | Hardness tester |
| CN203519442U (en) * | 2013-10-21 | 2014-04-02 | 上海研润光机科技有限公司 | Vickers indentation hardness measurement system |
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2016
- 2016-04-28 CN CN201610281920.4A patent/CN105954132B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4667509A (en) * | 1984-03-01 | 1987-05-26 | Page-Wilson Corporation | Digital tester for measuring the hardness of the material |
| JPH0972840A (en) * | 1995-09-04 | 1997-03-18 | Shimadzu Corp | Indentation-type hardness tester |
| JPH0979964A (en) * | 1995-09-14 | 1997-03-28 | Akashi:Kk | Hardness calculating method for hardness tester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110823732A (en) * | 2019-09-29 | 2020-02-21 | 彩虹显示器件股份有限公司 | Correction method for Vickers hardness test deviation of electronic glass |
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