CN105526851A - Pit area detector and detection method - Google Patents
Pit area detector and detection method Download PDFInfo
- Publication number
- CN105526851A CN105526851A CN201610046980.8A CN201610046980A CN105526851A CN 105526851 A CN105526851 A CN 105526851A CN 201610046980 A CN201610046980 A CN 201610046980A CN 105526851 A CN105526851 A CN 105526851A
- Authority
- CN
- China
- Prior art keywords
- pit
- area
- diameter
- area detector
- center
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/26—Measuring arrangements characterised by the use of mechanical techniques for measuring areas, e.g. planimeters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Image Analysis (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses a pit area detector and a detection method. The center of a circular flat is provided with a circular through hole and is provided with a cross; a detection port which is the size of the diameter of the pit is selectively formed on the circumference of the circular flat according to the size of the pit; and the area of the flat is a set value matched with the diameter of the detection port. The detection method comprises steps of determining the size of the pit, choosing a corresponding detector, aligning the circular center of the detector and the pit and drawing the theoretical area of the pit. The pit area detector can conveniently and quickly determine the area of the pit, the operation process is simple and the accuracy and working efficiency are high.
Description
Technical field
The present invention relates to testing tool, particularly relate to a kind of detecting device and the detection method that detect the pit area of Surface of profile.
Background technology
Pit is also called pitted skin, is one of sheet material, profile surface defect, and showing as product surface is rough uneven surface, many continuously in flakes, also have local or in periodic distribution.Pit is the defect allowing to exist, but its degree of depth must not exceed the scope of the thickness deviation of product.If be greater than 20% of thickness of slab when the pit degree of depth, by interlayer process when pit area is greater than 2% of steel plate area, therefore the statistics of pit area has direct decisive action for the processing scheme of steel plate defect.But the specific standards that the method for statistics pit area is ununified at present, lacks again concrete operation tool, and existing statistic processes is all comparatively complicated, and it exists a large amount of estimating, and degree of accuracy is low and error rate is high.
Summary of the invention
The present invention aims to provide a kind of detecting device and the detection method that detect the pit area of Surface of profile, to simplify the operation, and improves the accuracy and detection efficiency that detect.
Pit area detector of the present invention, comprises circular dull and stereotyped, flat board has the detection mouth of manhole and detection pit diameter, centering cross curve also drawn by flat board; The center of circle of manhole, the central point of centering cross curve all overlap with the dull and stereotyped center of circle, and four limits of centering cross curve extend to flat board from through hole; Detecting mouth is semicircle opening, and the center of circle is arranged at flat board circumferentially; Dull and stereotyped area is the setting value of closing with detection mouth diameter compatible.
Pit area detecting method of the present invention, comprises the following steps:
A, the detection mouth of pit area detector is positioned over surveyed pit place, is as the criterion so that both diameter are basically identical, chooses the pit area detector of dimension;
B, the manhole at pit area detector center is positioned over surveyed pit place, utilizes centering cross curve to assist, the circular center of circle is overlapped with the center of circle of pit;
C, to rule along the circumference of pit area detector;
D, repeat above step, until after the pit of required measurement all determines, calculate pitted actual influence area.
Pit area detector of the present invention and detection method thereof, circular dull and stereotyped circumferential edge has detection mouth, and opening is semicircle, by the pit of this detection mouth near required measurement during work, when size and the pit of detection mouth used are just consistent, the diameter of pit can be determined; Then the manhole of plate center is placed in pit, and utilizes centering cross curve to assist, the center of circle of through hole is overlapped with the center of circle of pit; Mark the dull and stereotyped scope covered along dull and stereotyped circumference again, this scope, namely dull and stereotyped area is exactly the theoretical influence area of surveyed pit.In ship domain, according to International Association of Classification Societies (IACS) (InternationalAssociationofClassificationSocieties, be called for short IACS) standard: for the discontinuous defect in single surface, affected area is by obtaining in the standardized continuous lines in 20mm place around discontinuous defect; For the discontinuous defect in a group surface, affected area is by obtaining in the standardized continuous lines in 20mm place around these defects.According to this standard, the large I of influence area of pit according to the size of pit, namely pit diameter and determine, the pit influence area as 1mm diameter is 0.00132m
2, the pit influence area of 2mm diameter is 0.00138m
2, so be set to by the area of flat board and the setting value detecting mouthful diameter compatible and close, the circumference now along flat board is rule, can quickly and easily according to the position of pit and the position of diameter determination influence area and size; And the setting of centering cross curve had both been convenient to location, can improve again positioning precision; Detect mouth and be set to semicircle and on dull and stereotyped limit, can determine the diameter of pit when the size detecting mouth and pit are just consistent, it is high that it operates visualization, and process is convenient and swift and accurate.
Accompanying drawing explanation
Fig. 1 is the structural representation of pit area detector.
Fig. 2 is single pit range of influence schematic diagram.
Fig. 3 is discrete type pit range of influence schematic diagram.
Fig. 4 is intensive pit range of influence schematic diagram.
Embodiment
As shown in Figure 1, a kind of pit area detector, comprises circular dull and stereotyped 1, flat board has the detection mouth 3 of manhole 2 and detection pit diameter, centering cross curve 4 also drawn by flat board; The center of circle of manhole, the central point of centering cross curve all overlap with the dull and stereotyped center of circle, and four limits of centering cross curve extend to flat board from through hole; Detecting mouth is semicircle opening, and the center of circle is arranged at flat board circumferentially; Dull and stereotyped area is the setting value of closing with detection mouth diameter compatible.
After determining pit size and central point, draw the dull and stereotyped scope covered along dull and stereotyped circumference, i.e. the theoretical influence area of surveyed pit.As shown in Figure 2, be single pit range of influence schematic diagram, wherein cover the region 102 i.e. theoretical influence area of pit of pit 101; As shown in Figure 3, be discrete type pit range of influence schematic diagram, the influence area of these pits is the area sum of shade; As shown in Figure 4, be intensive pit range of influence schematic diagram, detection person can draw pit main plot edge line by the pit of outermost edge, then adopts polygon principle to calculate pit zone of influence area according to the shape in whole region.
Described pit area detector, the diameter detecting mouth 3 can be 1mm, also can be any one in 2mm, 3mm, 4mm or 5mm.According to daily statistics, diameter is that the ratio that the pit of 1-5mm respectively accounts for is approximately 50% respectively, 25%, 10%, 3%, 2%, therefore almost can assert that sheet material, profile surface defect are mainly based on 1mm, 2mm, 3mm, 1-5mm comprises pitted size substantially, so correspondingly arrange five kinds of detecting devices of 1-5mm, can meet detection demand.
The diameter of through hole 2 is greater than 5mm, and is advisable with 8mm.The through hole of more than 5mm can meet the detection demand of pit, and through hole is set to 8mm, can be convenient to the operation of measuring on the one hand, be more prone to aim at, also can reduce on the other hand needed for dull and stereotyped material, reduce the weight of detecting device, improve operation ease further.
Have on dull and stereotyped 1 for hanging or the latch closure hole 5 of connection fastener.For maximum detecting device, the pit influence area of 5mm diameter is 0.00159m
2, the diameter of detecting device is 45mm, its small volume, easily lose in Long-Time Service, so arrange latch closure hole, can be suspended on hook when non-usage, also with fastener, multiple detecting device can be linked together, with fastener, detecting device and other article can also be linked together, this can prevent loss on the one hand, is also easy to carry on the other hand, reduces needed for dull and stereotyped material further simultaneously, reduce the weight of detecting device, improve operation ease.
The numerical marker 6 of corresponding pit influence area is carved with on dull and stereotyped 1.This had both been convenient to the resolution of detecting device and had chosen, and was also convenient to the calculating of area.
Pit area detecting method of the present invention, comprises the following steps:
A, the detection mouth of pit area detector is positioned over surveyed pit place, is as the criterion so that both diameter are basically identical, chooses the pit area detector of dimension;
B, the manhole at pit area detector center is positioned over surveyed pit place, utilizes centering cross curve to assist, the circular center of circle is overlapped with the center of circle of pit;
C, circumference setting-out along pit area detector;
D, repeat above step, until after the pit of required measurement all determines, calculate pitted actual influence area.
Described pit area detecting method, in step D, if the pit measured is single pit, drawn circular scope is surveyed pit influence area; If the pit measured is discrete type pit, then pit influence area is the area sum in drawn region; If the pit measured is intensive pit, then draw pit main plot edge line by the pit of outermost edge, then adopt polygon principle to calculate pit zone of influence area according to the shape in whole region.
Claims (8)
1. a pit area detector, is characterized in that: comprise circular dull and stereotyped (1), flat board has the detection mouth (3) of manhole (2) and detection pit diameter, flat board has also been drawn centering cross curve (4); The center of circle of manhole, the central point of centering cross curve all overlap with the dull and stereotyped center of circle, and four limits of centering cross curve extend to flat board from through hole; Detecting mouth is semicircle opening, and the center of circle is arranged at flat board circumferentially; Dull and stereotyped area is the setting value of closing with detection mouth diameter compatible.
2. pit area detector according to claim 1, is characterized in that: the diameter detecting mouth (3) is be any one in 1mm, 2mm, 3mm, 4mm or 5mm.
3. pit area detector according to claim 1 and 2, is characterized in that: the diameter of through hole (2) is greater than 5mm.
4. pit area detector according to claim 3, is characterized in that: the diameter of through hole (2) is 8mm.
5. pit area detector according to claim 1 and 2, is characterized in that: dull and stereotyped (1) has for hanging or the latch closure hole (5) of connection fastener.
6. pit area detector according to claim 1 and 2, is characterized in that: the numerical marker (6) dull and stereotyped (1) being carved with corresponding pit influence area.
7. a pit area detecting method, is characterized in that comprising the following steps:
A, the detection mouth of pit area detector is positioned over surveyed pit place, is as the criterion so that both diameter are basically identical, chooses the pit area detector of dimension;
B, the manhole at pit area detector center is positioned over surveyed pit place, utilizes centering cross curve to assist, the circular center of circle is overlapped with the center of circle of pit;
C, circumference setting-out along pit area detector;
D, repeat above step, until after the pit of required measurement all determines, calculate pitted actual influence area.
8. pit area detecting method according to claim 7, is characterized in that: in step D, if the pit measured is single pit, drawn circular scope is surveyed pit influence area; If the pit measured is discrete type pit, then pit influence area is the area sum in drawn region; If the pit measured is intensive pit, then draw pit main plot edge line by the pit of outermost edge, then adopt polygon principle to calculate pit zone of influence area according to the shape in whole region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610046980.8A CN105526851B (en) | 2016-01-25 | 2016-01-25 | A kind of point area detector and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610046980.8A CN105526851B (en) | 2016-01-25 | 2016-01-25 | A kind of point area detector and detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105526851A true CN105526851A (en) | 2016-04-27 |
| CN105526851B CN105526851B (en) | 2018-04-20 |
Family
ID=55769231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610046980.8A Active CN105526851B (en) | 2016-01-25 | 2016-01-25 | A kind of point area detector and detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105526851B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB150685A (en) * | 1919-09-06 | 1921-11-21 | Krupp Ag | Improvements in and relating to surface measuring machines, particularly intended for the measurement of leather |
| CN1847778A (en) * | 2005-04-15 | 2006-10-18 | 周道彪 | Broken bill face value measuring instrument |
| CN201607183U (en) * | 2010-03-04 | 2010-10-13 | 李刚 | Tapeline for fast measuring garden trees |
| CN202133341U (en) * | 2011-07-13 | 2012-02-01 | 晋西铁路车辆有限责任公司 | Multi-functional checking ruler of surface quality of cast |
| CN202486827U (en) * | 2012-02-15 | 2012-10-10 | 宝山钢铁股份有限公司 | Steel plate surface defect inspection tool |
| US8466673B2 (en) * | 2007-08-23 | 2013-06-18 | Jfe Steel Corporation | Method and apparatus for detecting concavo-convex shape surface defects |
| CN205332993U (en) * | 2016-01-25 | 2016-06-22 | 广州文冲船厂有限责任公司 | Pit area detector |
-
2016
- 2016-01-25 CN CN201610046980.8A patent/CN105526851B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB150685A (en) * | 1919-09-06 | 1921-11-21 | Krupp Ag | Improvements in and relating to surface measuring machines, particularly intended for the measurement of leather |
| CN1847778A (en) * | 2005-04-15 | 2006-10-18 | 周道彪 | Broken bill face value measuring instrument |
| US8466673B2 (en) * | 2007-08-23 | 2013-06-18 | Jfe Steel Corporation | Method and apparatus for detecting concavo-convex shape surface defects |
| CN201607183U (en) * | 2010-03-04 | 2010-10-13 | 李刚 | Tapeline for fast measuring garden trees |
| CN202133341U (en) * | 2011-07-13 | 2012-02-01 | 晋西铁路车辆有限责任公司 | Multi-functional checking ruler of surface quality of cast |
| CN202486827U (en) * | 2012-02-15 | 2012-10-10 | 宝山钢铁股份有限公司 | Steel plate surface defect inspection tool |
| CN205332993U (en) * | 2016-01-25 | 2016-06-22 | 广州文冲船厂有限责任公司 | Pit area detector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105526851B (en) | 2018-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201607184U (en) | Special push-pull gauge for quickly measuring height | |
| CN204085352U (en) | For the calliper of quick test outer diameter of steel pipes bound | |
| CN203824479U (en) | Gauge plate for testing wall thickness of pipe | |
| CN201352096Y (en) | Conical plug gauge | |
| CN204495229U (en) | A kind of guide hole cubing | |
| CN204007424U (en) | A kind of measurement mechanism of part wall thickness | |
| CN202018255U (en) | Special slide caliper | |
| CN205332993U (en) | Pit area detector | |
| CN102607370B (en) | Detection card for thickness of coating layer of waterproof coating | |
| CN105526851A (en) | Pit area detector and detection method | |
| CN203866679U (en) | Gage for testing thickness of cement concrete pavement mortar | |
| CN104019721A (en) | Steel dimension measuring apparatus | |
| CN204007385U (en) | A kind of turbine blade is carried on the back the comprehensive measuring tool of arc steam passage and lagging edge height in measuring | |
| US20190285394A1 (en) | Gage for detecting a diameter of a bolt hole back socket | |
| CN204085400U (en) | A kind of collar outer diameter cubing | |
| CN205825873U (en) | A kind of cubing for measuring the pinhole of camshaft degree of depth | |
| CN204255222U (en) | The survey instrument of a kind of part inside groove slot size | |
| CN211503909U (en) | Dimension tool for measuring square cutting iron core | |
| CN204902746U (en) | A detect auxiliary device that is used for a bolt word groove symmetry | |
| CN201897449U (en) | Measuring device for measuring total long conical surface of diaphragm stationary blade | |
| CN203672304U (en) | Measuring pallet for large-size shaft type keyseat | |
| CN102147220A (en) | Measuring device for detecting overall-length conical surface of clapboard stator blade | |
| CN206406040U (en) | Rail line drawing ruler | |
| CN205002692U (en) | Multi -functional normalizing device | |
| CN202470952U (en) | Large aperture inner cylindrical surface total run-out detection tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20160427 Assignee: CSSC HUANGPU WENCHONG SHIPBUILDING Co.,Ltd. Assignor: GUANGZHOU WENCHONG SHIPYARD Co.,Ltd. Contract record no.: X2022440000046 Denomination of invention: A pockmarked area detector and its detection method Granted publication date: 20180420 License type: Common License Record date: 20220705 |