CN111678995A - A standard test plate of an automatic flaw detector for a plate and a method of using the same - Google Patents

A standard test plate of an automatic flaw detector for a plate and a method of using the same Download PDF

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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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CN111678995B (en
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唐运章
俞美萍
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Nanjing Iron and Steel Co Ltd
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    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating 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
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract

本发明公开了一种板材自动探伤仪标准测试板,涉及超声波探伤技术领域,包括板体,所述板体上开设有若干个平底孔以及若干条开槽,若干个所述平底孔的直径和深度各不相同。本发明还公开了一种板材自动探伤仪标准测试板的使用方法。本发明提供的板材自动探伤仪标准测试板上的缺陷设计完整,可真实反映超声波探伤仪的探伤性能,避免出现钢板缺陷漏探的现象。

Figure 202010616449

The invention discloses a standard test board for an automatic flaw detector for plates, which relates to the technical field of ultrasonic flaw detection. Depth varies. The invention also discloses a method for using the standard test plate of the plate automatic flaw detector. The defect design on the standard test plate of the plate automatic flaw detector provided by the invention is complete, which can truly reflect the flaw detection performance of the ultrasonic flaw detector, and avoid the phenomenon of missing detection of steel plate defects.

Figure 202010616449

Description

一种板材自动探伤仪标准测试板及其使用方法A standard test plate of an automatic flaw detector for a plate and a method of using the same

技术领域technical field

本发明涉及超声波探伤技术领域,特别是涉及一种板材自动探伤仪标准测试板及其使用方法。The invention relates to the technical field of ultrasonic flaw detection, in particular to a standard test plate of an automatic flaw detector for sheet metal and a method for using the same.

背景技术Background technique

超声波自动探伤仪是钢铁生产线上对所需探伤钢管、钢棒、钢板进行内部质量检测,依照对应不同国家用户、不同内容和性质的标准及规定对其进行在线自动探伤,以便对钢材的内部缺陷和性能进行精确判定的重要手段。超声波探伤检测属于无损检测,原理是:超声波在钢板中传播时,在不同的质界面上具有反射的特性,如遇到缺陷,超声波在缺陷上反射回来,探伤仪可将反射波显示出来。Ultrasonic automatic flaw detector is an internal quality inspection of steel pipes, steel bars and steel plates required for flaw detection on the steel production line, and online automatic flaw detection is carried out according to the standards and regulations corresponding to users in different countries, different contents and properties, so as to detect the internal defects of the steel. It is an important means to accurately determine the performance. Ultrasonic flaw detection belongs to non-destructive testing. The principle is: when the ultrasonic wave propagates in the steel plate, it has the characteristics of reflection on different quality interfaces. If a defect is encountered, the ultrasonic wave is reflected back on the defect, and the flaw detector can display the reflected wave.

为检验自动探伤设备和探头的性能,确定探伤灵敏度,一般会设计自动探伤仪测试板,在测试板内部提前制作好各种缺陷,通过各缺陷的检测度来显示设备的性能指标。在实际操作中,规定每4个小时检测一次测试板,通过测试板上各缺陷在图谱上显示的完整性来判定设备目前的状态。由于测试板的设计各不相同,有的测试板设计不完整,不能反映设备真实的性能状况,会造成钢板缺陷漏探。In order to test the performance of automatic flaw detection equipment and probes and determine the flaw detection sensitivity, an automatic flaw detector test board is generally designed, various defects are made in the test board in advance, and the performance indicators of the equipment are displayed through the detection degree of each defect. In actual operation, it is stipulated that the test board is tested every 4 hours, and the current state of the equipment is determined by the completeness of each defect on the test board displayed on the map. Due to the different designs of test boards, some test boards are not fully designed and cannot reflect the real performance status of the equipment, which will result in missed detection of steel plate defects.

发明内容SUMMARY OF THE INVENTION

本发明所要解决的技术问题是,克服现有技术的缺点,提供一种板材自动探伤仪标准测试板及其使用方法。The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art, and to provide a standard test board of an automatic flaw detector for plates and a method of using the same.

为了解决以上技术问题,本发明的技术方案如下:In order to solve the above technical problems, the technical scheme of the present invention is as follows:

一种板材自动探伤仪标准测试板,包括板体,所述板体上开设有若干个平底孔以及若干条开槽,若干个所述平底孔的直径和深度各不相同。A standard test board for an automatic flaw detector for plates comprises a board body, the board body is provided with a number of flat-bottomed holes and a number of slots, and the diameters and depths of the several of the flat-bottomed holes are different.

作为本发明所述板材自动探伤仪标准测试板的一种优选方案,其中:所述平底孔包括沿所述板体宽度方向等距排布的第一排孔、第二排孔和第三排孔,所述第一排孔的直径均为5mm,所述第二排孔的直径均为3mm,所述第三排孔的直径均为2mm,且第一排孔、第二排孔和第三排孔中所述平底孔的深度依次递增。As a preferred solution of the standard test plate of the automatic flaw detector for plates of the present invention, wherein: the flat-bottomed holes include a first row of holes, a second row of holes and a third row of holes that are equidistantly arranged along the width direction of the plate body The diameter of the first row of holes is 5mm, the diameter of the second row of holes is 3mm, the diameter of the third row of holes is 2mm, and the first row of holes, the second row of holes and the third row of holes are all 2mm in diameter. The depths of the flat-bottomed holes in the three rows of holes are successively increased.

作为本发明所述板材自动探伤仪标准测试板的一种优选方案,其中:所述平底孔还包括沿所述板体宽度方向等距排布的第四排孔和第五排孔,所述第四排孔和第五排孔分别位于所述板体长度方向的两端,且与相邻的板体端部之间的间距为20mm,所述第四排孔和第五排孔均包括直径为3mm以及直径为5mm的平底孔,且直径为3mm的所述平底孔与直径为5mm的所述平底孔交错设置,第四排孔、和第五排孔中所述平底孔的深度依次递增。As a preferred solution of the standard test plate of the plate automatic flaw detector of the present invention, wherein: the flat-bottomed hole further includes a fourth row of holes and a fifth row of holes that are equidistantly arranged along the width direction of the plate body. The fourth row of holes and the fifth row of holes are respectively located at both ends of the plate body in the length direction, and the distance between them and the end of the adjacent plate body is 20mm, and the fourth row of holes and the fifth row of holes include The flat-bottomed holes with a diameter of 3mm and a diameter of 5mm, and the flat-bottomed holes with a diameter of 3mm and the flat-bottomed holes with a diameter of 5mm are arranged alternately, and the depths of the flat-bottomed holes in the fourth row of holes and the fifth row of holes are sequentially Increment.

作为本发明所述板材自动探伤仪标准测试板的一种优选方案,其中:所述板体的厚度为30mm,所述第一排孔、第二排孔、第三排孔、第四排孔和第五排孔均包括八个平底孔,任一排孔中八个所述平底孔的深度依次为1.5mm、2mm、8mm、14mm、20mm、26mm、28mm、28.5mm。As a preferred solution of the standard test plate of the plate automatic flaw detector of the present invention, wherein: the thickness of the plate body is 30mm, the first row of holes, the second row of holes, the third row of holes, and the fourth row of holes and the fifth row of holes both include eight flat-bottomed holes, and the depths of the eight flat-bottomed holes in any row of holes are 1.5mm, 2mm, 8mm, 14mm, 20mm, 26mm, 28mm, and 28.5mm in sequence.

作为本发明所述板材自动探伤仪标准测试板的一种优选方案,其中:任一排孔中相邻的两个所述平底孔之间的间距为50mm。As a preferred solution of the standard test plate of the plate automatic flaw detector of the present invention, the distance between the two adjacent flat-bottomed holes in any row of holes is 50 mm.

作为本发明所述板材自动探伤仪标准测试板的一种优选方案,其中:所述平底孔还包括沿所述板体长度方向依次排布的第六排孔和第七排孔,所述第六排孔和第七排孔分别位于所述板体的两侧,且与相邻的板体侧边之间的间距为10mm,所述第六排孔和第七排孔均包括直径为3mm以及直径为5mm的平底孔,且直径为3mm的所述平底孔与直径为5mm的所述平底孔交错设置,第六排孔、和第七排孔中所述平底孔的深度依次递增。As a preferred solution of the standard test plate of the plate automatic flaw detector of the present invention, wherein: the flat-bottomed hole further includes a sixth row of holes and a seventh row of holes arranged in sequence along the length direction of the plate body. The sixth row of holes and the seventh row of holes are located on both sides of the plate body, respectively, and the distance between them and the side edges of the adjacent plate body is 10mm, and the sixth row of holes and the seventh row of holes both include a diameter of 3mm. and flat-bottom holes with a diameter of 5mm, and the flat-bottom holes with a diameter of 3mm and the flat-bottom holes with a diameter of 5mm are alternately arranged, and the depths of the flat-bottom holes in the sixth row of holes and the seventh row of holes increase sequentially.

作为本发明所述板材自动探伤仪标准测试板的一种优选方案,其中:所述第六排孔和所述第七排孔均包括六个平底孔,且六个所述平底孔的深度依次为2mm、8mm、14mm、20mm、26mm、28mm。As a preferred solution of the standard test plate of the plate automatic flaw detector of the present invention, wherein: the sixth row of holes and the seventh row of holes include six flat-bottomed holes, and the depths of the six flat-bottomed holes are sequentially 2mm, 8mm, 14mm, 20mm, 26mm, 28mm.

作为本发明所述板材自动探伤仪标准测试板的一种优选方案,其中:所述开槽包括沿板体宽度方向设置的第一槽体和第二槽体以及倾斜设置且互相平行的第三槽体和第四槽体,所述第一槽体、第二槽体、第三槽体和第四槽体的宽度均为5mm,深度均为5mm。As a preferred solution of the standard test plate of the automatic flaw detector for plates of the present invention, wherein: the slot includes a first slot body and a second slot body arranged along the width direction of the plate body and a third slot body arranged obliquely and parallel to each other The groove body and the fourth groove body, the first groove body, the second groove body, the third groove body and the fourth groove body are all 5mm in width and 5mm in depth.

一种板材自动探伤仪标准测试板的使用方法,包括以下步骤:A method for using a standard test board of a plate automatic flaw detector, comprising the following steps:

S1:超声波自动探伤仪的两排探头均沿板体宽度方向依次等距排布,每排探头中任意相邻的两个探头之间的间距为50mm,且两排探头交错设置,两排探头对板面进行100%全平面检测;S1: The two rows of probes of the ultrasonic automatic flaw detector are arranged equidistantly along the width direction of the plate body. The distance between any two adjacent probes in each row of probes is 50mm, and the two rows of probes are staggered. The two rows of probes 100% full plane inspection of the board surface;

S2:测试板匀速向左移动,直至测试板移出探头的探测区域,超声波探伤仪将检测到的缺陷显示在显示器上;S2: The test board moves to the left 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 defects on the display;

S3:将超声波探伤仪检测到的缺陷与测试板上存在的缺陷进行比对,评定超声波探伤仪的性能。S3: Compare the defects detected by the ultrasonic flaw detector with the defects existing on the test board to evaluate the performance of the ultrasonic flaw detector.

本发明的有益效果是:The beneficial effects of the present invention are:

本发明提供的板材自动探伤仪标准测试板上的缺陷设计完整,可真实反映超声波探伤仪的探伤性能,避免出现钢板缺陷漏探的现象。The defect design on the standard test plate of the plate automatic flaw detector provided by the invention is complete, which can truly reflect the flaw detection performance of the ultrasonic flaw detector, and avoid the phenomenon of missing detection of steel plate defects.

附图说明Description of drawings

为了更清楚地说明本发明实施例的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其它的附图。In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

图1为本发明提供的板材自动探伤仪标准测试板的缺陷示意图;Fig. 1 is the defect schematic diagram of the standard test board of the plate automatic flaw detector provided by the present invention;

图2为本发明提供的板材自动探伤仪标准测试板上各个平底孔的尺寸示意图;FIG. 2 is a schematic view of the size of each flat-bottomed hole on the standard test plate of the automatic flaw detector for plates provided by the present invention;

图3为探伤时超声波探伤仪上探头的位置示意图。Figure 3 is a schematic diagram of the position of the probe on the ultrasonic flaw detector during flaw detection.

具体实施方式Detailed ways

为使本发明的内容更容易被清楚地理解,下面根据具体实施方式并结合附图,对本发明作出进一步详细的说明。In order to make the content of the present invention easier to understand clearly, the present invention will be further described in detail below according to specific embodiments and in conjunction with the accompanying drawings.

本实施例提供了一种板材自动探伤仪标准测试板,包括厚度为30mm的板体,在板体上开设有若干个平底孔和若干条开槽,作为测试板上的缺陷,通过超声波探伤仪对这些缺陷的检测度可显示设备的性能指标。This embodiment provides a standard test plate for an automatic flaw detector for plates, including a plate body with a thickness of 30 mm, and a number of flat-bottomed holes and a number of slots are opened on the plate body as defects on the test plate. The degree of detection of these defects can reveal the performance indicators of the equipment.

具体的,若干个平底孔包括沿板体宽度方向等距排布的第一排孔(即图1中的D排孔)、第二排孔(即图1中的E排孔)、第三排孔(即图1中的F排孔)、第四排孔(即图1中的C排孔)和第五排孔(即图1中的L排孔),每排孔均包括八个平底孔,对其编号分别为D1~D8、E1~E8、F1~F8、C1~C8、L1~L8。Specifically, the several flat-bottomed holes include a first row of holes (ie, the D row of holes in FIG. 1 ), a second row of holes (ie, the E row of holes in FIG. 1 ), a third row of holes, and a third A row of holes (ie, the F row of holes in Figure 1), the fourth row of holes (ie, the C row of holes in Figure 1) and the fifth row of holes (ie, the L row of holes in Figure 1), each row of holes includes eight holes For flat-bottomed holes, the numbers are D1~D8, E1~E8, F1~F8, C1~C8, L1~L8 respectively.

其中,第一排孔中的平底孔(即D1~D8)的直径均为5mm,第二排孔中的平底孔(即E1~E8)的直径均为3mm,第三排孔中的平底孔(即F1~F8)的直径均为2mm,而第四排孔和第五排孔均包括四个直径为5mm的平底孔和四个直径为3mm的平底孔,且直径为5mm的平底孔与直径为3mm的平底孔沿板体的宽度方向依次交错设置。这五排孔中的平底孔的深度均依次递增,任一排孔中八个平底孔的深度由上向下依次为1.5mm、2mm、8mm、14mm、20mm、26mm、28mm、28.5mm。任一排孔中相邻两个平底孔之间的间距均为50mm。The diameters of the flat-bottomed holes (ie D1-D8) in the first row of holes are all 5mm, the diameters of the flat-bottomed holes (ie E1-E8) in the second row of holes are all 3mm, and the flat-bottomed holes in the third row of holes are all 3mm in diameter. (ie F1 to F8) are all 2mm in diameter, and the fourth row of holes and the fifth row of holes include four flat-bottom holes with a diameter of 5mm and four flat-bottom holes with a diameter of 3mm, and the flat-bottom holes with a diameter of 5mm are the same as Flat-bottomed holes with a diameter of 3 mm are arranged staggered in sequence along the width direction of the plate body. The depths of the flat-bottomed holes in the five rows of holes are increased in sequence, and the depths of the eight flat-bottomed holes in any row of holes are 1.5mm, 2mm, 8mm, 14mm, 20mm, 26mm, 28mm, and 28.5mm from top to bottom. The spacing between two adjacent flat-bottomed holes in any row of holes is 50mm.

需要说明的是,第四排孔(即C排孔)临近板体的左端,且第四排孔中的平底孔的左端与板体左端之间的间距为20mm,第五排孔(即L排孔)临近板体的右端,且第五排孔中的平底孔的右端与板体右端之间的间距为20mm。第一排孔、第二排孔和第三排孔均位于第四排孔与第五排孔之间。It should be noted that the fourth row of holes (ie, the C row of holes) is adjacent to the left end of the plate body, and the distance between the left end of the flat-bottomed hole in the fourth row of holes and the left end of the plate body is 20mm, and the fifth row of holes (ie, L The row of holes) is adjacent to the right end of the plate body, and the distance between the right end of the flat-bottomed 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.

另外,板体上的平底孔还包括沿板体长度方向不等距排布的第六排孔(即图1中的G排孔)和第七排孔(即图1中的H排孔)。其中,第六排孔(即G排孔)临近板体的上端,且第六排孔中的平底孔的上端与板体上端之间的间距均为10mm。第七排孔(即H排孔)临近板体的下端,且第七排孔中的平底孔的下端与板体下端之间的间距均为10mm。In addition, the flat-bottomed holes on the plate body also include a sixth row of holes (ie, the G row of holes in FIG. 1 ) and the seventh row of holes (ie, the H row of holes in FIG. 1 ) that are not equidistantly arranged along the length of the plate body. . The sixth row of holes (ie, the G row of holes) is adjacent to the upper end of the plate body, and the distance between the upper end of the flat-bottomed hole in the sixth row of holes and the upper end of the plate body is 10 mm. The seventh row of holes (ie, the H row of holes) is adjacent to the lower end of the plate body, and the distance between the lower ends of the flat-bottomed holes in the seventh row of holes and the lower end of the plate body is 10 mm.

第六排孔和第七排孔均包括六个平底孔,其对应的编号分别为G1~G6和H1~H6。其中,G1、G3和G5以及H1、H3和H5的直径为5mm,G2、G4和G6以及H2、H4和H6的直径均为3mm。第六排孔和第七排孔中的六个平底孔的深度由左向右依次为2mm、8mm、14mm、20mm、26mm、28mm。The sixth row of holes and the seventh row of holes both include six flat-bottomed holes, and their corresponding numbers are G1 to G6 and H1 to H6 respectively. Among them, 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 3mm. The depths of the six flat-bottomed holes in the sixth row of holes and the seventh row of holes are 2mm, 8mm, 14mm, 20mm, 26mm, and 28mm from left to right.

另外,板体上开设的开槽包括沿板体宽度方向设置的第一槽体(即图1中的N1)和第二槽体(即图1中的N2)以及倾斜设置且互相平行的第三槽体(即图1中的M1)和第四槽体(即图1中的M2),第一槽体、第二槽体、第三槽体和第四槽体的宽度均为5mm,深度均为5mm。In addition, the slots provided on the plate body include a first slot body (ie, N1 in FIG. 1 ) and a second slot body (ie, N2 in FIG. 1 ) arranged along the width direction of the plate body, and a second slot body arranged obliquely and parallel to each other. The third slot body (ie M1 in Figure 1) and the fourth slot body (ie M2 in Figure 1), the width of the first slot body, the second slot body, the third slot body and the fourth slot body are all 5mm, Depth is 5mm.

当需要评定超声波探伤仪实际需要达到的探伤灵敏度时,可通过超声波探伤仪对测试板上直径为3mm的平底孔的检出率来进行评定,即第二排孔(E排孔)的检出率,将第二排孔中的平底孔沿测试板宽度方向等距排布可便于真实反映超声波探伤仪各个探头的灵敏度,而第二排孔中各个平底孔的深度不同可代表检测不同钢板厚度区间的能力。When it is necessary to evaluate the flaw detection sensitivity that the ultrasonic flaw detector actually needs to achieve, the detection rate of the flat-bottomed hole with a diameter of 3 mm on the test plate can be evaluated by the ultrasonic flaw detector, that is, the detection of the second row of holes (E row of holes) The flat-bottomed holes in the second row of holes are arranged at equal distances along the width of the test plate, which is convenient to truly reflect the sensitivity of each probe of the ultrasonic flaw detector, and the different depths of the flat-bottomed holes in the second row of holes can represent the detection of different steel plate thicknesses range capabilities.

当需要评定超声波探伤仪检测目前国内国际中最高探伤标准需要达到的灵敏度时,可通过超声波探伤仪对测试板上直径为5mm的平底孔的检出率来进行评定,即第一排孔(D排孔)的检出率,将第二排孔中的平底孔沿测试板宽度方向等距排布可便于真实反映超声波探伤仪各个探头的灵敏度,而第二排孔中各个平底孔的深度不同可代表检测不同钢板厚度区间的能力。When it is necessary to evaluate the sensitivity of the ultrasonic flaw detector to detect the highest flaw detection standards at home and abroad, the detection rate of the flat-bottom hole with a diameter of 5mm on the test plate can be evaluated by the ultrasonic flaw detector, that is, the first row of holes (D Arranging the flat-bottomed holes in the second row of holes equidistantly along the width of the test plate can easily reflect the sensitivity of each probe of the ultrasonic flaw detector, while the depths of the flat-bottomed holes in the second row of holes are different. It can represent the ability to detect different steel plate thickness ranges.

当需要评定超声波探伤仪能达到的最佳灵敏度时,可通过超声波探伤仪对测试板上直径为2mm的平底孔的检出率来进行评定,即第三排孔(F排孔)的检出率,将第三排孔中的平底孔沿测试板宽度方向等距排布可便于真实反映超声波探伤仪各个探头的灵敏度,而第三排孔中各个平底孔的深度不同可代表检测不同钢板厚度区间的能力。When it is necessary to evaluate the best sensitivity that the ultrasonic flaw detector can achieve, the detection rate of the flat-bottomed hole with a diameter of 2 mm on the test plate can be evaluated by the ultrasonic flaw detector, that is, the detection of the third row of holes (F row of holes) The flat-bottomed holes in the third row of holes are arranged at equal distances along the width of the test plate, which is convenient to truly reflect the sensitivity of each probe of the ultrasonic flaw detector, and the different depths of the flat-bottomed holes in the third row of holes can represent the detection of different steel plate thicknesses range capabilities.

当需要评定超声波探伤仪对板体上下表盲区灵敏度时,可根据C1、D1、E1、F1、C8、D8、E8、F8的检出率进行评定,这八个平底孔中,C1、D1、E1、F1的深度均为1.5mm,而C8、D8、E8、F8的深度均为28.5mm,由于板体厚度为30mm,因此C8、D8、E8、F8这四个平底孔的孔底与板体背面之间的间距也为1.5mm。When it is necessary to evaluate the sensitivity of the ultrasonic flaw detector to the upper and lower blind areas of the plate, it can be evaluated according to the detection rate of C1, D1, E1, F1, C8, D8, E8, and F8. Among these eight flat-bottomed holes, C1, D1, The depths of E1 and F1 are both 1.5mm, while the depths of C8, D8, E8, and F8 are all 28.5mm. Since the thickness of the plate body is 30mm, the hole bottoms of the four flat-bottomed holes C8, D8, E8, and F8 are the same as the plate. The spacing between the back of the body is also 1.5mm.

当需要评定超声波探伤仪对板体头尾部盲区的灵敏度时,可根据对第四排孔(C排孔)和第五排孔(L排孔)的检出率进行评定。When it is necessary to evaluate the sensitivity of the ultrasonic flaw detector to the blind area of the head and tail of the board, the evaluation can be made according to the detection rate of the fourth row of holes (C row of holes) and the fifth row of holes (L row of holes).

当需要评定超声波探伤仪对板体边部盲区的灵敏度时,可根据对第六排孔(G排孔)和第七排孔(H排孔)的检出率进行评定。When it is necessary to evaluate the sensitivity of the ultrasonic flaw detector to the blind area at the edge of the plate, the evaluation can be made according to the detection rate of the sixth row of holes (G row of holes) and the seventh row of holes (H row of holes).

当需要评定超声波探伤仪测长轮正常工作及A排、B排探头接合度时,可根据对测试板上四条槽体的检出率进行评定。When it is necessary to evaluate the normal operation of the length measuring wheel of the ultrasonic flaw detector and the joint degree of the probes in rows A and B, the evaluation can be made according to the detection rate of the four grooves on the test board.

因此,本发明提供的板材自动探伤仪标准测试板上的缺陷设计完整,可真实反映超声波探伤仪的探伤性能,避免出现钢板缺陷漏探的现象。Therefore, the defect design on the standard test plate of the automatic plate flaw detector provided by the present invention is complete, which can truly reflect the flaw detection performance of the ultrasonic flaw detector and avoid the phenomenon of missing detection of steel plate defects.

本实施例还提供了一种板材自动探伤仪标准测试板的使用方法,包括以下步骤:This embodiment also provides a method for using a standard test board of an automatic flaw detector for a plate, comprising the following steps:

S1:将超声波自动探伤仪的两排探头均沿板体宽度方向依次等距排布,每排探头中任意相邻的两个探头之间的间距为50mm,且两排探头交错设置,当检测到测试板的左端位于探头下方时,探头自动下落至测试板表面;其中,探头安装在探头盒内,探头标定时探头与耐磨板之间有0.3mm的水膜间隙,耐磨板与钢板直接接触;S1: Arrange the two rows of probes of the ultrasonic automatic flaw detector at equal distances in turn along the width direction of the plate. The distance between any two adjacent probes in each row of probes is 50mm, and the two rows of probes are staggered. When the left end of the test plate is below the probe, the probe automatically falls to the surface of the test plate; the probe is installed in the probe box, and there is a 0.3mm water film gap between the probe and the wear plate when the probe is calibrated, and the wear plate and the steel plate direct contact;

S2:测试板匀速向左移动,直至测试板移出探头的探测区域,超声波探伤仪将检测到的缺陷显示在显示器上;S2: The test board moves to the left 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 defects on the display;

S3:将超声波探伤仪检测到的缺陷与测试板上存在的缺陷进行比对,评定超声波探伤仪的性能。S3: Compare the defects detected by the ultrasonic flaw detector with the defects existing on the test board to evaluate the performance of the ultrasonic flaw detector.

一般超声波探伤仪的探伤要求是:直径为5mm的平底孔的探出率为100%,直径为3mm的平底孔的探出率大于或等于98%,直径为2mm的平底孔不作探出率要求。Generally, the flaw detection requirements of ultrasonic flaw detectors are: the detection rate of flat-bottom holes with a diameter of 5mm is 100%, the detection rate of flat-bottom holes with a diameter of 3mm is greater than or equal to 98%, and the detection rate of flat-bottom holes with a diameter of 2mm is not required. .

除上述实施例外,本发明还可以有其他实施方式;凡采用等同替换或等效变换形成的技术方案,均落在本发明要求的保护范围。In addition to the above-mentioned embodiments, the present invention may also have other embodiments; all technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope 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.
CN202010616449.6A 2020-06-30 2020-06-30 Standard test board of automatic flaw detector for board and use method thereof Active CN111678995B (en)

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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
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