CN105954132B - Vickers and hardness measurement modification method - Google Patents
Vickers and hardness measurement modification method Download PDFInfo
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- CN105954132B CN105954132B CN201610281920.4A CN201610281920A CN105954132B CN 105954132 B CN105954132 B CN 105954132B CN 201610281920 A CN201610281920 A CN 201610281920A CN 105954132 B CN105954132 B CN 105954132B
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- 238000002715 modification method Methods 0.000 title claims abstract description 15
- 238000007542 hardness measurement Methods 0.000 title claims abstract description 12
- 238000012937 correction Methods 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 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
- 238000005259 measurement Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007689 inspection Methods 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
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- 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 present invention provides a kind of Vickers, the Vickers includes rack, the rack includes upper and lower spaced upper frame and lower frame, connect the connector and storage room of upper frame and lower frame, the standard block of hardness that at least two pieces of hardness is different is placed in the storage room, the lifting platform of upward projection is provided on the lower frame, the top of the lifting platform is provided with the object placing platform to shelve article to be measured, the pressure head towards the object placing platform projection is provided on the upper frame, to drive the driving device of the pressure head, the present invention also provides a kind of hardness measurement modification methods, when being measured using above-mentioned Vickers, it first passes through examination criteria block of hardness and obtains correction factor, article to be measured is detected again obtains detection hardness, detection hardness number is modified by correction factor, obtain actual hardness value.Vickers of the invention is easy to use, and hardness determination modification method of the invention, makeover process is simple, and correction result is accurate.
Description
Technical field
The present invention relates to a kind of Vickers and hardness measurement modification methods.
Background technique
Vickers is mainly used for seeping small, slim test specimen and surface, the part after plating and agate, glass etc.
Fragile material carries out Determination of Hardness.Due to test force very little, impression also very little, the appearance and service performance of test specimen can not be by
It influences, therefore is widely used.
However, existing Vickers is after being used for a while, because of the focus offset of micro objective, amplification factor
The problems such as deviation or loading force change, will result in measurement error.
In view of this, it is necessary to existing Vickers and hardness measurement modification method be improved, on solving
State problem.
Summary of the invention
The purpose of the present invention is to provide a kind of Vickers and hardness measurement modification methods, hard to solve existing Vickers
Degree meter leads to the problem of error using a period of time later.
To achieve the above object, the present invention provides a kind of Vickers, and the Vickers includes rack, described
Rack includes upper and lower spaced upper frame and lower frame, the connector and storage room that connect upper frame and lower frame, institute
The standard block of hardness for being placed with that at least two pieces of hardness is different in storage room is stated, the liter of upward projection is provided on the lower frame
Platform drops, and the top of the lifting platform is provided with the object placing platform to shelve article to be measured, is provided on the upper frame towards institute
The pressure head of stating object placing platform projection, the driving device to drive the pressure head, the Vickers first pass through inspection in measurement
It surveys standard block of hardness and obtains correction factor, then detect article to be measured and obtain detection hardness, by correction factor to detection hardness number
It is modified, obtains actual hardness value.
As a further improvement of the present invention, the standard block of hardness includes the first standard block of hardness that hardness is hv2500
The second standard block of hardness for being hv600 with hardness.
As a further improvement of the present invention, the upper frame is additionally provided with the microscope of in-built CCD image capturing system
Object lens.
As a further improvement of the present invention, the machine frame inside is provided with memory module and processing module.
The present invention also provides a kind of hardness measurement modification method, the hardness measurement modification method includes the following steps:
Using above-mentioned Vickers, the first standard block of hardness is placed on object placing platform, control lifting platform is increased to
Predeterminated position；
Control driving device drives the pressure head to be pressed on first standard block of hardness with scheduled loading force, continues 30
Second, control driving device drove the pressure head far from the first standard block of hardness to extrude image on the first standard block of hardness；
So that micro objective is directed at the image extruded on the first standard block of hardness, is acquired and schemed by ccd image acquisition system
Picture, and it is stored into memory module, processing module measures the catercorner length of image, is denoted as Lt1；
Control lifting platform drops to original position, and takes the first standard block of hardness away；
Second standard block of hardness is placed on object placing platform, control lifting platform is increased to predeterminated position；
Control driving device drives the pressure head to be pressed on second standard block of hardness with scheduled loading force, continues 30
Second, control driving device drove the pressure head far from the second standard block of hardness to extrude image on the second standard block of hardness；
So that micro objective is directed at the image extruded on the second standard block of hardness, is acquired and schemed by ccd image acquisition system
Picture, and it is stored into memory module, processing module measures the catercorner length of image, is denoted as Lt2；
Control lifting platform drops to original position, and takes the second standard block of hardness away；
The Lt1 obtained and Lt2, which is handled, by processing module obtains amendment amplification coefficient A and amendment offset B.
As a further improvement of the present invention, formula A=(Lt1/Ld1-Lt2/Ld2)/(Lt1-Lt2) and B=Lt1/ is utilized
Ld1- (Lt1/Ld1-Lt2/Ld2) * Ld1/ (Ld1-Ld2) finds out amendment amplification coefficient A and amendment offset B, wherein Ld1 is
Hardness hv2500 corresponds to catercorner length in Vickers hardness number table, and Ld2 is that hardness hv600 corresponds to diagonal line in Vickers hardness number table
Length.
As a further improvement of the present invention, adjusted coefficient K is found out using formula K=ALn+B, wherein Ln is described in utilization
Vickers measures the catercorner length of the image extruded on the article to be measured；
The hardness number HV that corresponding catercorner length is Ln is found using Vickers hardness number table to ask using formula HVn=K*HV
Actual hardness value HVn out.
The beneficial effects of the present invention are: Vickers of the invention, by the way that storage room is arranged, and in storage room
The different standard block of hardness of hardness is set, obtains correction factor so as in measurement, first pass through examination criteria block of hardness, then
It detects article to be measured and obtains detection hardness, detection hardness is modified by correction factor, obtains actual hardness value, detection essence
Really, hardness determination modification method of the invention, makeover process is simple, and correction result is accurate.
Detailed description of the invention
Fig. 1 is the positive structure schematic of Vickers of the present invention；
Fig. 2 is the side structure schematic diagram of Vickers of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, right in the following with reference to the drawings and specific embodiments
The present invention is described in detail.
As shown in Figure 1 to Figure 2, Vickers 100 of the invention includes rack 10.
The rack 10 includes upper and lower spaced upper frame 1 and lower frame 2, the company for connecting upper frame 1 and lower frame 2
Junctor 3 and storage room 4.The rack 10 is internally provided with memory module (not shown) and processing module (not shown).It is described
Memory module is to store data, and the processing module is to handle data.
The lifting platform 21 of upward projection is provided on the lower frame 2, the top of the lifting platform 21 is provided with to put
Set the object placing platform 22 of article 200 to be measured.
The pressure head 11 towards 22 projection of object placing platform is provided on the upper frame 1, to drive the pressure head 11
The micro objective 12 of driving device (not shown), in-built CCD image capturing system (not shown).It is also set on the upper frame 1
There are operation panel 13 and display panel 14, to show testing result, the operation panel 13 is equipped with the display panel 14
Key, to control detection process.
The pressure head 11 is to squeeze article 200 to be measured to extrude image, the micro objective on article 200 to be measured
12 to acquire image.
Any position on the upper frame 1, lower frame 2 or connector 3 can be set in the storage room 4, described
The standard block of hardness that at least two pieces of hardness is different is placed in storage room 4.The standard block of hardness includes that hardness is hv2500
The first standard block of hardness (not shown) and hardness be hv600 the second standard block of hardness (not shown).Most of article to be measured
200 hardness selects such first standard block of hardness and the second standard block of hardness, Ke Yibao between hv600 ~ hv2500 refers to
It is accurate to demonstrate,prove modified result.
The Vickers 100 first passes through examination criteria block of hardness and obtains correction factor in measurement, then detects to be measured
Article 200 obtains detection hardness, is modified by correction factor to detection hardness, exports actual hardness.Specific hardness measurement
Modification method includes the following steps:
Using above-mentioned Vickers 100, the first standard block of hardness is placed on object placing platform 22, controls 21 liters of lifting platform
Height arrives predeterminated position；
Control driving device drives the pressure head 11 to be pressed on first standard block of hardness with scheduled loading force, continues
To extrude image on the first standard block of hardness, control driving device drives the pressure head 11 far from the first standard hardness within 30 seconds
Block；
So that micro objective 12 is directed at the image extruded on the first standard block of hardness, is acquired by ccd image acquisition system
Image, and it is stored into memory module, processing module measures the catercorner length of image, is denoted as Lt1；
Control lifting platform 21 drops to original position, and takes the first standard block of hardness away；
Second standard block of hardness is placed on object placing platform 22, control lifting platform 21 is increased to predeterminated position；
Control driving device drives the pressure head 11 to be pressed on second standard block of hardness with scheduled loading force, continues
To extrude image on the second standard block of hardness, control driving device drives the pressure head 11 far from the second standard hardness within 30 seconds
Block；
So that micro objective 12 is directed at the image extruded on the second standard block of hardness, is acquired by ccd image acquisition system
Image, and it is stored into memory module, processing module measures the catercorner length of image, is denoted as Lt2；
Control lifting platform 21 drops to original position, and takes the second standard block of hardness away；
The Lt1 obtained and Lt2, which is handled, by processing module obtains amendment amplification coefficient A and amendment offset B.
Amendment amplification coefficient A and amendment offset B, A=(Lt1/Ld1-Lt2/Ld2)/(Lt1-Lt2) and B are asked using formula
=Lt1/Ld1- (Lt1/Ld1-Lt2/Ld2) * Ld1/ (Ld1-Ld2), wherein Ld1 is that hardness hv2500 corresponds to Vickers hardness number table
Middle catercorner length, Ld2 are that hardness hv600 corresponds to catercorner length in Vickers hardness number table.
Find out adjusted coefficient K using formula K=ALn+B, wherein Ln be measured using the Vickers 100 it is described to
Survey the catercorner length of the image extruded on article 200；
The hardness number HV that corresponding catercorner length is Ln is found using Vickers hardness number table to ask using formula HVn=K*HV
Actual hardness value HVn out.
Vickers 100 of the invention, by the way that storage room 4 is arranged, and in storage room 4, setting hardness is different
Standard block of hardness obtains correction factor so as in measurement, first pass through examination criteria block of hardness, then detects article to be measured
200 obtain detection hardness, are modified by correction factor to detection hardness, obtain actual hardness value, detection is accurate, the present invention
Hardness determination modification method, makeover process is simple, and correction result is accurate.
The above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to preferred embodiment to this hair
It is bright to be described in detail, those skilled in the art should understand that, it can modify to technical solution of the present invention
Or equivalent replacement, without departing from the spirit and scope of the technical solution of the present invention.
Claims (2)
1. a kind of hardness measurement modification method, it is characterised in that: the hardness measurement modification method includes the following steps:
Using Vickers, the first standard block of hardness is placed on object placing platform, control lifting platform is increased to predeterminated position；Institute
Stating Vickers includes rack, the rack include upper and lower spaced upper frame and lower frame, connection upper frame and under
The connector and storage room of frame body are placed with the standard block of hardness that at least two pieces of hardness is different in the storage room, described
It is provided with the lifting platform of upward projection on lower frame, the top of the lifting platform, which is provided with, puts object to shelve article to be measured
Platform is provided with the pressure head towards the object placing platform projection, the driving device to drive the pressure head on the upper frame, described
Vickers first passes through examination criteria block of hardness and obtains correction factor in measurement, then detects article to be measured and obtain detection firmly
Degree is modified detection hardness number by correction factor, obtains actual hardness value；The standard block of hardness includes that hardness is
The first standard block of hardness and hardness of hv2500 is the second standard block of hardness of hv600；The upper frame is additionally provided with in-built CCD
The micro objective of image capturing system；The machine frame inside is provided with memory module and processing module；
Control driving device drives the pressure head to be pressed on first standard block of hardness with scheduled loading force, continue 30 seconds with
Image is extruded on the first standard block of hardness, control driving device drives the pressure head far from the first standard block of hardness；
So that micro objective is directed at the image extruded on the first standard block of hardness, image is acquired by ccd image acquisition system, and
It is stored into memory module, processing module measures the catercorner length of image, is denoted as Lt1；
Control lifting platform drops to original position, and takes the first standard block of hardness away；
Second standard block of hardness is placed on object placing platform, control lifting platform is increased to predeterminated position；
Control driving device drives the pressure head to be pressed on second standard block of hardness with scheduled loading force, continue 30 seconds with
Image is extruded on the second standard block of hardness, control driving device drives the pressure head far from the second standard block of hardness；
So that micro objective is directed at the image extruded on the second standard block of hardness, image is acquired by ccd image acquisition system, and
It is stored into memory module, processing module measures the catercorner length of image, is denoted as Lt2；
Control lifting platform drops to original position, and takes the second standard block of hardness away；
The Lt1 obtained and Lt2, which is handled, by processing module obtains amendment amplification coefficient A and amendment offset B；
Utilize formula A=(Lt1/Ld1-Lt2/Ld2)/(Lt1-Lt2) and B=Lt1/Ld1- (Lt1/Ld1-Lt2/Ld2) * Ld1/
(Ld1-Ld2) amendment amplification coefficient A and amendment offset B are found out, wherein Ld1 is that hardness hv2500 corresponds to Vickers hardness number table
Middle catercorner length, Ld2 are that hardness hv600 corresponds to catercorner length in Vickers hardness number table.
2. hardness measurement modification method according to claim 1, it is characterised in that: find out amendment using formula K=ALn+B
COEFFICIENT K, wherein Ln is the catercorner length that the image extruded on the article to be measured is measured using the Vickers；
The hardness number HV that corresponding catercorner length is Ln, which is found, using Vickers hardness number table finds out reality using formula HVn=K*HV
Border hardness number HVn.
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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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| 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 CN105954132A (en) | 2016-09-21 |
| CN105954132B true CN105954132B (en) | 2019-01-29 |
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Families Citing this family (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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|---|---|---|---|---|
| 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 |
| JP2003035645A (en) * | 2001-07-25 | 2003-02-07 | Akashi Corp | Machine and method for testing rockwell hardness |
| CN101451984A (en) * | 2007-11-30 | 2009-06-10 | 耐博检测技术(上海)有限公司 | Automatic/semi-automatic measurement method for depth-hardness curve of rolled steel and device thereof |
| CN101893534A (en) * | 2009-05-22 | 2010-11-24 | 宝山钢铁股份有限公司 | Hardness test method |
| CN102393341A (en) * | 2011-08-03 | 2012-03-28 | 湘潭大学 | Device for testing hardness, fracture toughness and residual stress of brittle material with indentation method |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4958754B2 (en) * | 2007-12-07 | 2012-06-20 | 株式会社ミツトヨ | Hardness tester and calibration method for hardness tester |
-
2016
- 2016-04-28 CN CN201610281920.4A patent/CN105954132B/en active Active
Patent Citations (9)
| 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 |
| JP2003035645A (en) * | 2001-07-25 | 2003-02-07 | Akashi Corp | Machine and method for testing rockwell hardness |
| CN101451984A (en) * | 2007-11-30 | 2009-06-10 | 耐博检测技术(上海)有限公司 | Automatic/semi-automatic measurement method for depth-hardness curve of rolled steel and device thereof |
| CN101893534A (en) * | 2009-05-22 | 2010-11-24 | 宝山钢铁股份有限公司 | Hardness test method |
| CN102393341A (en) * | 2011-08-03 | 2012-03-28 | 湘潭大学 | Device for testing hardness, fracture toughness and residual stress of brittle material with indentation method |
| 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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