CN111678995A - Standard test board of automatic plate flaw detector and using method thereof - Google Patents
Standard test board of automatic plate flaw detector and using method thereof Download PDFInfo
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- CN111678995A CN111678995A CN202010616449.6A CN202010616449A CN111678995A CN 111678995 A CN111678995 A CN 111678995A CN 202010616449 A CN202010616449 A CN 202010616449A CN 111678995 A CN111678995 A CN 111678995A
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- 238000012360 testing method Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 239000000523 sample Substances 0.000 claims description 28
- 230000007547 defect Effects 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 14
- 239000010959 steel Substances 0.000 abstract description 14
- 230000035945 sensitivity Effects 0.000 description 11
- 210000005056 cell body Anatomy 0.000 description 8
- 238000010586 diagram Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/30—Arrangements for calibrating or comparing, e.g. with standard objects
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Abstract
The invention discloses a standard test board of an automatic flaw detector for plates, which relates to the technical field of ultrasonic flaw detection and comprises a plate body, wherein a plurality of flat-bottom holes and a plurality of slots are formed in the plate body, and the diameters and the depths of the flat-bottom holes are different. The invention also discloses a use method of the standard test board of the automatic plate flaw detector. The standard test board for the automatic plate flaw detector provided by the invention has complete flaw design, can truly reflect the flaw detection performance of the ultrasonic flaw detector, and avoids the phenomenon of missed detection of steel plate flaws.
Description
Technical Field
The invention relates to the technical field of ultrasonic flaw detection, in particular to a standard test board of an automatic flaw detector for plates and a using method thereof.
Background
The ultrasonic automatic flaw detector is an important means for detecting the internal quality of steel pipes, steel bars and steel plates to be detected on a steel production line and automatically detecting the flaws on line according to standards and regulations corresponding to different national users and different contents and properties so as to accurately judge the internal defects and performance of the steel. The ultrasonic flaw detection belongs to nondestructive detection, and the principle is as follows: when the ultrasonic wave is transmitted in the steel plate, the ultrasonic wave has the characteristic of reflection on different interfaces, if a defect is encountered, the ultrasonic wave is reflected back on the defect, and the flaw detector can display the reflected wave.
In order to test the performance of automatic flaw detection equipment and probes and determine flaw detection sensitivity, an automatic flaw detector test board is generally designed, various defects are manufactured in advance in the test board, and the performance indexes of the equipment are displayed according to the detection degree of each defect. In practice, the test board is inspected every 4 hours, and the current state of the device is determined by the integrity of the defects on the test board as shown on the map. Because the design of the test boards is different, the design of some test boards is incomplete, the real performance condition of the equipment cannot be reflected, and the steel plate defects can be missed.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides a standard test board of an automatic flaw detector for a sheet material and a using method thereof.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the utility model provides a panel automatic flaw detector standard testing board, the package rubbing board body, a plurality of flat bed hole and a plurality of fluting, a plurality of have been seted up on the plate body the diameter and the degree of depth diverse in flat bed hole.
The invention relates to a preferable scheme of a standard test board of an automatic plate flaw detector, wherein: the flat hole includes the edge first round of hole, second round of hole and third round of hole that plate body width direction equidistance was arranged, the diameter in first round of hole is 5mm, the diameter in second round of hole is 3mm, the diameter in third round of hole is 2mm, and in first round of hole, second round of hole and the third round of hole the degree of depth in flat hole increases gradually in proper order.
The invention relates to a preferable scheme of a standard test board of an automatic plate flaw detector, wherein: the flat hole still includes the edge fourth round of hole and the fifth round of hole that plate body width direction equidistance was arranged, fourth round of hole and fifth round of hole are located respectively plate body length direction's both ends, and with the interval between the adjacent plate body tip be 20mm, fourth round of hole and fifth round of hole all include that the diameter is 3mm and the diameter is 5 mm's flat hole, and the diameter is 3mm the flat hole is 5mm with the diameter the crisscross setting in flat hole, in fourth round of hole and the fifth round of hole the degree of depth in flat hole increases gradually in proper order.
The invention relates to a preferable scheme of a standard test board of an automatic plate flaw detector, wherein: the thickness of plate body is 30mm, first round of hole, second round of hole, third round of hole, fourth round of hole and fifth round of hole all include eight flat-bottom holes, eight in any round of hole the degree of depth in flat-bottom hole is 1.5mm, 2mm, 8mm, 14mm, 20mm, 26mm, 28mm, 28.5mm in proper order.
The invention relates to a preferable scheme of a standard test board of an automatic plate flaw detector, wherein: the distance between two adjacent flat-bottom holes in any row of holes is 50 mm.
The invention relates to a preferable scheme of a standard test board of an automatic plate flaw detector, wherein: the flat hole still includes the edge sixth round of hole and the seventh round of hole that plate body length direction arranged in proper order, sixth round of hole and seventh round of hole are located respectively the both sides of plate body, and with the interval between the adjacent plate body side be 10mm, sixth round of hole and seventh round of hole all include that the diameter is 3mm and the diameter is 5 mm's flat hole, and the diameter is 3mm flat hole is 5mm with the diameter the crisscross setting in flat hole, in sixth round of hole and the seventh round of hole the degree of depth in flat hole increases gradually in proper order.
The invention relates to a preferable scheme of a standard test board of an automatic plate flaw detector, wherein: the sixth round with the seventh round all includes six flat bottom holes, and six the degree of depth in flat bottom hole is 2mm, 8mm, 14mm, 20mm, 26mm, 28mm in proper order.
The invention relates to a preferable scheme of a standard test board of an automatic plate flaw detector, wherein: the fluting includes first cell body and the second cell body that sets up along plate body width direction and slope setting and third cell body and the fourth cell body that is parallel to each other, the width of first cell body, second cell body, third cell body and fourth cell body is 5mm, and the degree of depth is 5 mm.
The use method of the standard test board of the automatic flaw detector for the plates comprises the following steps:
s1: two rows of probes of the automatic ultrasonic flaw detector are sequentially arranged at equal intervals along the width direction of the plate body, the distance between any two adjacent probes in each row of probes is 50mm, the two rows of probes are arranged in a staggered mode, and 100% full-plane detection is carried out on the plate surface by the two rows of probes;
s2: the test board moves leftwards at a constant speed until the test board moves out of the detection area of the probe, and the ultrasonic flaw detector displays the detected flaws on the display;
s3: and comparing the defects detected by the ultrasonic flaw detector with the defects on the test board, and evaluating the performance of the ultrasonic flaw detector.
The invention has the beneficial effects that:
the standard test board for the automatic plate flaw detector provided by the invention has complete flaw design, can truly reflect the flaw detection performance of the ultrasonic flaw detector, and avoids the phenomenon of missed detection of steel plate flaws.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic diagram of a defect of an automatic flaw detector standard test board for sheet materials according to the present invention;
FIG. 2 is a schematic diagram showing the dimensions of each flat bottom hole on an automatic flaw detector standard test plate for sheet materials provided by the present invention;
fig. 3 is a schematic view showing the position of a probe on the ultrasonic flaw detector at the time of flaw detection.
Detailed Description
In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
The embodiment provides a panel automatic flaw detector standard testing board, is 30 mm's plate body including thickness, has seted up a plurality of flat bottom hole and a plurality of fluting on the plate body, as the defect on the testing board, but through the performance index of ultrasonic flaw detector to the detection degree display equipment of these defects.
Specifically, the plurality of flat-bottom holes comprise a first row of holes (namely, a row D of holes in fig. 1), a second row of holes (namely, a row E of holes in fig. 1), a third row of holes (namely, a row F of holes in fig. 1), a fourth row of holes (namely, a row C of holes in fig. 1) and a fifth row of holes (namely, a row L of holes in fig. 1) which are arranged at equal intervals along the width direction of the plate body, wherein each row of holes respectively comprises eight flat-bottom holes which are numbered as D1-D8, E1-E8, F1-F8, C1-C8 and L1-L8.
Wherein, the diameter of the flat bottom hole (being D1 ~ D8) in the first row of hole is 5mm, the diameter of the flat bottom hole (being E1 ~ E8) in the second row of hole is 3mm, the diameter of the flat bottom hole (being F1 ~ F8) in the third row of hole is 2mm, and fourth row of hole and fifth row of hole all include that four diameters are 5 mm's flat bottom hole and four diameters are 3 mm's flat bottom hole, and the diameter is that 5 mm's flat bottom hole and diameter are 3 mm's flat bottom hole along the width direction of plate body and set up in proper order in a staggered way. The depths of the flat-bottom holes in the five rows of holes are sequentially increased, and the depths of the eight flat-bottom holes in any row of holes are sequentially 1.5mm, 2mm, 8mm, 14mm, 20mm, 26mm, 28mm and 28.5mm from top to bottom. The distance between two adjacent flat bottom holes in any row of holes is 50 mm.
It should be noted that the fourth row of holes (i.e., the C row of holes) closes on the left end of the plate body, and the interval between the left end of the flat bottom hole in the fourth row of holes and the left end of the plate body is 20mm, the fifth row of holes (i.e., the L row of holes) closes on the right end of the plate body, and the interval between the right end of the flat bottom hole in the fifth row of holes and the right end of the plate body is 20 mm. The first row of holes, the second row of holes and the third row of holes are all located between the fourth row of holes and the fifth row of holes.
In addition, the flat-bottom holes on the plate body also comprise a sixth row of holes (namely, G row of holes in figure 1) and a seventh row of holes (namely, H row of holes in figure 1) which are arranged at unequal intervals along the length direction of the plate body. Wherein, the sixth row of holes (G row of holes promptly) closes on the upper end of plate body, and the interval between the upper end of the flat bottom hole in the sixth row of holes and the plate body upper end is 10 mm. The seventh row of holes (H row of holes) closes on the lower extreme of plate body, and the interval between the lower extreme of the flat bottom hole in the seventh row of holes and the plate body lower extreme is 10 mm.
The sixth row of holes and the seventh row of holes respectively comprise six flat-bottom holes with the corresponding numbers of G1-G6 and H1-H6. Wherein the diameters of G1, G3 and G5 and H1, H3 and H5 are 5mm, and the diameters of G2, G4 and G6 and H2, H4 and H6 are all 3 mm. The depths of six flat-bottom holes in the sixth row of holes and the seventh row of holes are sequentially 2mm, 8mm, 14mm, 20mm, 26mm and 28mm from left to right.
In addition, the open slot on the plate body comprises a first slot body (namely N1 in figure 1) and a second slot body (namely N2 in figure 1) which are arranged along the width direction of the plate body, and a third slot body (namely M1 in figure 1) and a fourth slot body (namely M2 in figure 1) which are obliquely arranged and are parallel to each other, wherein the widths of the first slot body, the second slot body, the third slot body and the fourth slot body are all 5mm, and the depths of the first slot body, the second slot body, the third slot body and the fourth slot body are all 5 mm.
When the inspection sensitivity that needs evaluation ultrasonic flaw detector actual need reached, accessible ultrasonic flaw detector assesses the relevance ratio of the flat bottom hole that the diameter is 3mm on testing the board, and the relevance ratio of second round (E round) is arranged to the flat bottom hole in the second round along testing board width direction equidistance and arranging can be convenient for truly reflect the sensitivity of each probe of ultrasonic flaw detector, and the degree of depth difference of each flat bottom hole in the second round can represent the ability of detecting different steel sheet thickness intervals.
When needing to assess the ultrasonic flaw detector and detecting the sensitivity that the highest standard of detecting a flaw needs to reach in domestic and international at present, accessible ultrasonic flaw detector is to survey the relevance ratio of the flat bottom hole that the diameter is 5mm on the board and assess, the relevance ratio of first round (D round), arrange the flat bottom hole in the second round along surveying the width direction equidistance of board and can be convenient for really reflect the sensitivity of each probe of ultrasonic flaw detector, and the degree of depth difference of each flat bottom hole in the second round can represent the ability of detecting different steel sheet thickness intervals.
When the best sensitivity that the ultrasonic flaw detector can reach needs to be assessed, accessible ultrasonic flaw detector assesses the relevance ratio of the flat bottom hole that the diameter is 2mm on the survey test panel, and the relevance ratio of third round (F round) is arranged, and the flat bottom hole in the third round is arranged along survey test panel width direction equidistance and can be convenient for really reflect the sensitivity of each probe of ultrasonic flaw detector, and the different ability that can represent the detection different steel plate thickness intervals of the degree of depth of each flat bottom hole in the third round.
When the sensitivity of the ultrasonic flaw detector to blind areas of the upper surface and the lower surface of the plate body needs to be evaluated, the sensitivity can be evaluated according to the detection rates of C1, D1, E1, F1, C8, D8, E8 and F8, the depths of C1, D1, E1 and F1 in the eight flat-bottom holes are all 1.5mm, the depths of C8, D8, E8 and F8 are all 28.5mm, and the distance between the hole bottoms of the four flat-bottom holes, namely C8, D8, E8 and F8, and the back surface of the plate body is also 1.5mm because the thickness of the plate body is 30 mm.
When the sensitivity of the ultrasonic flaw detector to the blind areas of the head and the tail of the board body needs to be evaluated, the detection rate of the fourth row of holes (C row of holes) and the fifth row of holes (L row of holes) can be evaluated.
When the sensitivity of the ultrasonic flaw detector to the dead zone of the edge of the plate body needs to be evaluated, the detection rate of the sixth row of holes (G row of holes) and the seventh row of holes (H row of holes) can be evaluated.
When the normal work of the length measuring wheel of the ultrasonic flaw detector and the joint degree of the probes in the A row and the B row need to be evaluated, the evaluation can be carried out according to the detection rates of the four groove bodies on the test board.
Therefore, the standard test board for the automatic plate flaw detector provided by the invention has complete flaw design, can truly reflect the flaw detection performance of the ultrasonic flaw detector, and avoids the phenomenon of missed detection of steel plate flaws.
The embodiment also provides a use method of the standard test board of the automatic plate flaw detector, which comprises the following steps:
s1: two rows of probes of the automatic ultrasonic flaw detector are sequentially arranged at equal intervals along the width direction of the plate body, the distance between any two adjacent probes in each row of probes is 50mm, the two rows of probes are arranged in a staggered manner, and when the left end of the test plate is detected to be positioned below the probes, the probes automatically fall to the surface of the test plate; the probe is arranged in the probe box, a 0.3mm water film gap is formed between the probe and the wear-resistant plate when the probe is calibrated, and the wear-resistant plate is in direct contact with the steel plate;
s2: the test board moves leftwards at a constant speed until the test board moves out of the detection area of the probe, and the ultrasonic flaw detector displays the detected flaws on the display;
s3: and comparing the defects detected by the ultrasonic flaw detector with the defects on the test board, and evaluating the performance of the ultrasonic flaw detector.
The flaw detection requirements of a general ultrasonic flaw detector are as follows: the protrusion rate of a flat-bottom hole with the diameter of 5mm is 100%, the protrusion rate of a flat-bottom hole with the diameter of 3mm is greater than or equal to 98%, and the protrusion rate of a flat-bottom hole with the diameter of 2mm is not required.
In addition to the above embodiments, the present invention may have other embodiments; all technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (9)
1. The utility model provides a panel automatic flaw detector standard testing board, includes the plate body, its characterized in that: a plurality of flat bottom holes and a plurality of slots are formed in the plate body, and the diameter and the depth of the flat bottom holes are different from each other.
2. The standard test board for automatic flaw detector of plates as claimed in claim 1, wherein: the flat bottom holes comprise a first row of holes, a second row of holes and a third row of holes which are arranged at equal intervals along the width direction of the plate body,
the diameter in first round of hole is 5mm, the diameter in second round of hole is 3mm, the diameter in third round of hole is 2mm, and in first round of hole, second round of hole and the third round of hole the degree of depth in flat hole increases progressively in proper order.
3. The standard test board for automatic flaw detector of plates according to claim 2, wherein: the flat bottom holes also comprise a fourth row of holes and a fifth row of holes which are arranged at equal intervals along the width direction of the plate body, the fourth row of holes and the fifth row of holes are respectively positioned at the two ends of the plate body in the length direction, and the distance between the end parts of the plate body and the adjacent end parts of the plate body is 20mm,
fourth round and fifth round all include that the diameter is 3mm and the diameter is 5 mm's flat bottom hole, and the diameter is 3mm the flat bottom hole is 5mm with the diameter the crisscross setting of flat bottom hole, in fourth round and the fifth round the degree of depth in flat bottom hole increases gradually in proper order.
4. The standard test board for automatic flaw detector of plates as claimed in claim 3, wherein: the thickness of plate body is 30mm, first round of hole, second round of hole, third round of hole, fourth round of hole and fifth round of hole all include eight flat-bottom holes, eight in any round of hole the degree of depth in flat-bottom hole is 1.5mm, 2mm, 8mm, 14mm, 20mm, 26mm, 28mm, 28.5mm in proper order.
5. The standard test board for automatic flaw detector of plates as claimed in claim 4, wherein: the distance between two adjacent flat-bottom holes in any row of holes is 50 mm.
6. The standard test board for automatic flaw detector of plates as claimed in claim 4, wherein: the flat bottom holes also comprise a sixth row of holes and a seventh row of holes which are sequentially arranged along the length direction of the plate body, the sixth row of holes and the seventh row of holes are respectively positioned at two sides of the plate body, the distance between the sixth row of holes and the seventh row of holes and the side edge of the adjacent plate body is 10mm,
sixth round of hole and seventh round of hole all include that the diameter is 3mm and the diameter is 5 mm's flat bottom hole, and the diameter is 3mm flat bottom hole is 5mm with the diameter the crisscross setting of flat bottom hole, in sixth round of hole and the seventh round of hole the degree of depth in flat bottom hole increases progressively in proper order.
7. The standard test board for automatic flaw detector of plates as claimed in claim 6, wherein: the sixth round with the seventh round all includes six flat bottom holes, and six the degree of depth in flat bottom hole is 2mm, 8mm, 14mm, 20mm, 26mm, 28mm in proper order.
8. The standard test board for automatic flaw detector of plates as claimed in claim 1, wherein: the groove comprises a first groove body and a second groove body which are arranged along the width direction of the plate body, and a third groove body and a fourth groove body which are parallel and obliquely arranged,
the width of the first groove body, the width of the second groove body, the width of the third groove body and the width of the fourth groove body are all 5mm, and the depth of the first groove body, the width of the second groove body, the width of the third groove body and the depth of the fourth groove body are all 5 mm.
9. A method for using the automatic flaw detector standard test plate for plate materials according to any one of claims 1 to 8, wherein the method comprises the following steps: the method comprises the following steps:
s1: arranging two rows of probes of the automatic ultrasonic flaw detector at equal intervals in sequence along the width direction of the plate body, wherein the distance between any two adjacent probes in each row of probes is 50mm, and the two rows of probes are arranged in a staggered manner and are arranged at the left end of the surface of the test plate;
s2: the test board moves leftwards at a constant speed until the test board moves out of the detection area of the probe, and the ultrasonic flaw detector displays the detected flaws on the display;
s3: and comparing the defects detected by the ultrasonic flaw detector with the defects on the test board, and evaluating the performance of the ultrasonic flaw detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010616449.6A CN111678995A (en) | 2020-06-30 | 2020-06-30 | Standard test board of automatic plate flaw detector and using method thereof |
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| CN202010616449.6A CN111678995A (en) | 2020-06-30 | 2020-06-30 | Standard test board of automatic plate flaw detector and using method thereof |
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| CN111272691A (en) * | 2020-02-26 | 2020-06-12 | 航天科工防御技术研究试验中心 | Terahertz wave detection test block and detection method |
| CN212845201U (en) * | 2020-06-30 | 2021-03-30 | 南京钢铁股份有限公司 | Standard test board for automatic flaw detector for plates |
-
2020
- 2020-06-30 CN CN202010616449.6A patent/CN111678995A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203455318U (en) * | 2013-09-04 | 2014-02-26 | 武汉钢铁(集团)公司 | Automatic defect detection dynamic calibration test plate |
| CN204479523U (en) * | 2015-03-16 | 2015-07-15 | 西安热工研究院有限公司 | A kind of Ultrasonic Detection Special test block detecting elbow inside and defect in inner surface |
| CN105203644A (en) * | 2015-09-21 | 2015-12-30 | 武汉钢铁(集团)公司 | Dynamic test plate for full-automatic ultrasonic testing system |
| CN108303469A (en) * | 2017-12-25 | 2018-07-20 | 南京钢铁股份有限公司 | A kind of online Ultrasonic Nondestructive comparison test plate (panel) |
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