CN112557505A - Root reflector simulation test block for ultrasonic detection of reel pipe weld joint and setting method - Google Patents

Root reflector simulation test block for ultrasonic detection of reel pipe weld joint and setting method Download PDF

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Publication number
CN112557505A
CN112557505A CN202011350423.8A CN202011350423A CN112557505A CN 112557505 A CN112557505 A CN 112557505A CN 202011350423 A CN202011350423 A CN 202011350423A CN 112557505 A CN112557505 A CN 112557505A
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groove
probe
wave
transverse hole
test block
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CN112557505B (en
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闫留青
王猛
蒋桂通
孙钟
裴彪
李鹏频
马海滨
寇玉全
赵忠祥
唐坤
陈明
王胜来
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Offshore Oil Engineering Co Ltd
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Offshore Oil Engineering Co Ltd
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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
    • G01N29/04—Analysing solids
    • 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
    • G01N29/24—Probes
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/023—Solids
    • G01N2291/0234—Metals, e.g. steel
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/0289—Internal structure, e.g. defects, grain size, texture
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/26—Scanned objects
    • G01N2291/267—Welds
    • G01N2291/2675—Seam, butt welding
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
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  • Pathology (AREA)
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  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

The invention discloses a simulation test block for detecting a root reflector by using ultrasonic waves for a reelpipe weld joint and a setting method, wherein the method comprises the following steps: s1, presetting at least 4 groups of reflectors; s2, presetting the position of a reference center line on the reflector; s3, determining the coordinate position of the probe wave-form conversion angle groove, the positions of the long transverse hole, the short transverse hole, the left upper longitudinal wave end angle reflection groove and the right upper transverse wave end angle reflection groove according to the position of a preset reference center line; s4, arranging the probe at the left end of the reflector simulation test block and at a position 1T-2.7T away from the right side of the preset reference center line, enabling the main sound beam direction of the probe to be perpendicular to the preset reference center line, and moving the probe back and forth; and S5, when the ultrasonic display screen displays a plurality of compact echoes and the amplitudes of the first two waves are the highest, moving the probe by 125-135 mm from left to right in parallel along the length direction of the probe wave-form conversion angle groove, observing the change of the number of the echoes, and sequentially reducing the number of the echoes to one echo. The invention improves the ultrasonic detection efficiency and ensures the welding quality.

Description

Root reflector simulation test block for ultrasonic detection of reel pipe weld joint and setting method
Technical Field
The invention relates to the technical field of offshore oil engineering inspection, in particular to a simulation test block for a root reflector for ultrasonic detection of a reel pipe weld joint and a setting method.
Background
The offshore oil platform uses a large number of rod string lacing wires, water-resisting sleeves and other rods in the construction process, and the longitudinal welding seams and the circumferential welding seams related in the structure are usually required to be subjected to 100% of ultrasonic inspection so as to determine whether the welding seams have defects.
The tie bars and the water-resisting casing pipes have small pipe diameters (most pipe diameters are less than or equal to 914 mm), and the rod pieces are long in length, so that a single-side welding and double-side forming welding mode is usually adopted. Due to the factors of ovality, skin error, priming process and the like of the pipe fitting, the difference of root forming of the welding line is large, so that the ultrasonic root defect echo of the welding line is difficult to distinguish, and the inspection efficiency is low. And easily cause undetected and misjudged, thereby influencing the welding quality.
Disclosure of Invention
The invention aims to solve the technical problem of how to provide a simulation test block and a setting method, which can effectively meet the requirement of distinguishing a root reflector of a single-side welding double-side forming reel pipe welding line, solve the problem that the root reflector is difficult to distinguish by ultrasonic detection and improve the field inspection efficiency.
In order to solve the technical problem, the invention provides a method for setting a root reflector simulation test block for ultrasonic detection of a pipe coiling welding seam, which comprises the following steps: s1, presetting at least 4 groups of reflectors.
And S2, presetting the position of a reference central line on the reflector.
And S3, determining the coordinate position of the probe wave-form conversion angle groove, the hole center position of the long transverse hole, the hole center position of the short transverse hole, the position of the upper left longitudinal wave end angle reflection groove and the position of the upper right transverse wave end angle reflection groove according to the position of the preset reference center line.
And S4, arranging the probe at the left end of the reflector simulation test block and at a position 1T-2.7T away from the right side of the preset reference center line, enabling the main sound beam direction of the probe to be perpendicular to the preset reference center line, and moving the probe back and forth.
And S5, when the ultrasonic display screen displays a plurality of compact echoes and the amplitudes of the first two waves are the highest, moving the probe by 125-135 mm from left to right in parallel along the length direction of the probe wave-form conversion angle groove, observing the change of the number of the echoes, and sequentially reducing the number of the echoes to one echo.
Preferably, in S3, the step of determining the coordinate position of the probe wave mode conversion angle slot includes: the right-angle top end of the probe wave-form conversion angle groove is arranged on the preset reference central line, the height from the bottom surface of the reflector simulation test block is 3mm, the right side groove surface and the preset reference central line form an included angle of 45-67 degrees, and the left side groove surface and the right side groove surface of the probe wave-form conversion angle groove are arranged perpendicularly to each other.
Preferably, in S3, the step of determining the hole center position of the long transverse hole includes: and arranging the long transverse hole at the left side of the preset reference center line, and arranging the depth position of the axis of the long transverse hole at one fourth of the thickness of the reflector simulation test block, so that an included angle of 5-35 degrees is formed between a connecting line of the center of the long transverse hole and the vertex of the probe wave form conversion angle groove and the preset reference center line.
Preferably, in S3, the step of determining the hole center position of the short transverse hole includes: and arranging the short transverse hole at the left side of the preset reference center line, and arranging the depth position of the axis of the short transverse hole at one fourth of the thickness of the reflector simulation test block, so that an included angle of 1-24 degrees is formed between the connecting line of the center of the short transverse hole and the vertex of the probe wave form conversion angle groove and the preset reference center line.
Preferably, in S3, the step of determining the position of the upper left longitudinal wave end angle reflection slot includes: and the upper vertex coordinates of the upper left longitudinal wave end angle reflection groove are deviated to the left by 2mm at the intersection of the connecting line of the circle center of the long transverse hole and the vertex of the probe wave mode conversion angle groove and the upper surface of the reflector simulation test block.
Preferably, the upper left longitudinal wave end corner reflection groove is a rectangular open groove, the length of the rectangular open groove is 80mm, the groove depth is 1.6mm, and the groove width is 0.2 mm.
Preferably, in S3, the step of determining the position of the upper right transverse wave end angle reflection slot includes: and the coordinates of the upper vertex point of the right upper transverse wave end angle reflection groove are deviated to the right by 3-5mm at the intersection of the connecting line of the circle center of the long transverse hole and the vertex point of the probe wave mode conversion angle groove and the upper surface of the reflector simulation test block.
Preferably, the right upper transverse wave end corner reflection groove is a rectangular open groove, the length of the rectangular open groove is 105mm, the groove depth is 1.6mm, and the groove width is 0.2 mm.
Preferably, the probe wave mode conversion angle groove includes: 45-degree probe wave mode conversion angle groove, 60-degree probe wave mode conversion angle groove, 70-degree probe wave mode conversion angle groove and 70-degree probe third critical wave mode conversion angle groove.
The invention also provides a reel pipe welding seam ultrasonic detection root reflector simulation test block, which comprises the following components: 70 degree probe wave mode conversion angle groove, 70 degree probe third critical wave mode conversion angle groove, 45 degree probe wave mode conversion angle groove, 60 degree probe wave mode conversion angle groove, left upper longitudinal wave end angle reflection groove, right upper transverse wave end angle reflection groove, long transverse hole and short transverse hole.
Wherein the 70-degree probe wave mode conversion angle groove, the 70-degree probe third critical wave mode conversion angle groove, the 45-degree probe wave mode conversion angle groove, the 60-degree probe wave mode conversion angle groove, the upper left longitudinal wave end angle reflection groove, the upper right transverse wave end angle reflection groove, the long transverse hole and the short transverse hole are parallel to each other in the length direction.
The invention has the technical effects that: passing the position of a preset reference center line; determining the coordinate position of the probe wave-form conversion angle groove, the hole center position of the long transverse hole, the hole center position of the short transverse hole, the position of the upper left longitudinal wave end angle reflection groove and the position of the upper right transverse wave end angle reflection groove according to the position of the preset reference center line; arranging a probe at the left end of the reflector simulation test block and at a position 1T-2.7T away from the right side of the preset reference center line, enabling the main sound beam direction of the probe to be perpendicular to the preset reference center line, and moving the probe back and forth; when the ultrasonic display screen displays a plurality of compact echoes and the amplitudes of the first two waves are the highest, the probe is moved in parallel from left to right by 125-135 mm along the length direction of the probe wave-form conversion angle groove, the change of the number of the echoes is observed, and the number of the echoes is reduced to one echo in sequence. The method not only can effectively meet the requirement of distinguishing and researching the root reflector of the reel pipe welding seam formed by single-side welding and double-side forming, but also solves the problem that the distinguishing and research of the root reflector by ultrasonic detection is difficult; but also can improve the on-site ultrasonic inspection efficiency of single-side welding joints of the lacing wire, the marine riser and the like, and ensure the welding quality.
Drawings
Fig. 1 is a flowchart of a method for setting a root reflector simulation test block for ultrasonic detection of a reel pipe weld according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a root reflector simulation test block for ultrasonic detection of a reel pipe weld according to an embodiment of the present invention.
Fig. 3 is a schematic cross-sectional structure diagram of a reflector according to an embodiment of the present invention.
Fig. 4 is a schematic cross-sectional structure diagram of a reflector according to an embodiment of the present invention.
Fig. 5 is a schematic cross-sectional structure diagram of a reflector according to an embodiment of the present invention.
Fig. 6 is a schematic cross-sectional structure diagram of a reflector according to an embodiment of the present invention.
Wherein, 1, a first probe wave-type conversion angle slot, 2, a first long transverse hole, 3, a first short transverse hole, 4, a first upper left longitudinal wave end angle reflection slot, 5, a first upper right longitudinal wave end angle reflection slot, 6, a second probe third critical wave-type conversion angle slot, 7, a second long transverse hole, 8, a second short transverse hole, 9, a second upper left longitudinal wave end angle reflection slot, 10, a second upper right longitudinal wave end angle reflection slot, 11, a third probe wave-type conversion angle slot, 12, a third long transverse hole, 13, a third short transverse hole, 14, a third upper left longitudinal wave end angle reflection slot, 15, a third upper right longitudinal wave end angle reflection slot, 16, a fourth probe wave-type conversion angle slot, 17, a fourth long transverse hole, 18, a fourth short transverse hole, 19, a fourth upper left longitudinal wave end angle reflection slot, 20, a first reference line, 21, a second probe reference line, 22, a first reference center line, 23, a second reference center line, 24 a third reference centre line, 25 a fourth reference centre line.
Detailed Description
The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
The embodiment of the invention provides a method for setting a root reflector simulation test block for ultrasonic detection of a reel pipe weld joint, which comprises the following steps of: s1, presetting at least 4 groups of reflectors.
Specifically, 4 sets of reflectors were placed on the test block, each set containing 4 or 5 reflectors. The reflectors of each group of reflectors are staggered with each other and have overlapping areas, one end of each group of reflectors is aligned, the lengths of the other ends of the reflectors are different, and the lengths of the reflectors are reduced in sequence.
Optionally, the 4 sets of reflectors include a first set of reflectors, a second set of reflectors, a third set of reflectors, and a fourth set of reflectors, where the first set of reflectors and the second set of reflectors are located on a straight line, and the third set of reflectors and the fourth set of reflectors are located on a straight line.
And S2, presetting the position of a reference central line on the reflector.
Specifically, the reference center line is preset on the reflector, so that the probe wave-mode conversion angle groove, the hole center position of the long transverse hole, the hole center position of the short transverse hole, the position of the upper left longitudinal wave end angle reflection groove and the position of the upper right transverse wave end angle reflection groove can be conveniently arranged.
The preset reference center lines include a first reference center line 22, a second reference center line 23, a third reference center line 24 and a fourth reference center line 25. By arranging corresponding 1 set of reflectors on the first reference center line 22, the second reference center line 23, the third reference center line 24 and the fourth reference center line 25, respectively.
And S3, determining the coordinate position of the probe wave-form conversion angle groove, the hole center position of the long transverse hole, the hole center position of the short transverse hole, the position of the upper left longitudinal wave end angle reflection groove and the position of the upper right transverse wave end angle reflection groove according to the position of the preset reference center line.
Specifically, because there are 4 groups of reflectors, each group of reflectors includes 4 or 5 reflectors, and each group of reflectors is correspondingly provided with a group of probe wave-form conversion angle grooves, long transverse holes, short transverse holes, left upper longitudinal wave end angle reflection grooves and right upper transverse wave end angle reflection grooves.
Therefore, as shown in fig. 2, the first group of reflectors are provided with a first probe wave mode conversion angle groove 1, a first long transverse hole 2, a first short transverse hole 3, a first upper left longitudinal wave end angle reflection groove 4, and a first upper right longitudinal wave end angle reflection groove 5. The second group of reflectors are provided with a second probe wave mode conversion angle groove 6, a second long transverse hole 7, a second short transverse hole 8, a second upper left longitudinal wave end angle reflection groove 9 and a second upper right longitudinal wave end angle reflection groove 10. The third group of reflectors are provided with a third probe wave mode conversion angle groove 11, a third long transverse hole 12, a third short transverse hole 13, a third upper left longitudinal wave end angle reflection groove 14 and a third upper right longitudinal wave end angle reflection groove 15. The fourth group of reflectors are provided with a fourth probe wave mode conversion angle groove 16, a fourth long transverse hole 17, a fourth short transverse hole 18 and a fourth upper left longitudinal wave end angle reflection groove 19.
The first, second, third and fourth groups of reflectors are arranged on the first, second, third and fourth reference center lines 22, 23, 24 and 25, respectively. Therefore, the coordinate position of the corresponding probe wave mode conversion angle groove, the hole center position of the long transverse hole, the hole center position of the short transverse hole, the position of the upper left longitudinal wave end angle reflection groove and the position of the upper right transverse wave end angle reflection groove can be determined according to the first reference center line 22, the second reference center line 23, the third reference center line 24 and the fourth reference center line 25.
Further, the reflectors at the positions of the first probe wave-type conversion angle groove 1, the second probe wave-type conversion angle groove 6, the third probe wave-type conversion angle groove 11 and the fourth probe wave-type conversion angle groove 16 are used for simulating a reflector pile body at the root of a solid welding seam, such as the inner detection side of a pipe welding seam.
Further, the position reflectors of the first upper left longitudinal wave end corner reflection groove 4, the second upper left longitudinal wave end corner reflection groove 9, the third upper left longitudinal wave end corner reflection groove 14, the fourth upper left longitudinal wave end corner reflection groove 19, the first upper right transverse wave end corner reflection groove 5, the second upper right transverse wave end corner reflection groove 10 and the third upper right transverse wave end corner reflection groove 15 simulate the state of the surplus height reflector on the surface of the welding seam, for example, the external detection of the pipe welding seam is carried out.
Furthermore, the reflectors at the positions of the first long transverse hole 2, the second long transverse hole 7, the third long transverse hole 12, the fourth long transverse hole 17, the first short transverse hole 3, the second short transverse hole 8, the third short transverse hole 13 and the fourth short transverse hole 18 are respectively arranged between the root reflector and the surface residual height reflector and are mainly used for distinguishing wave modes, wherein the wave modes are longitudinal waves or transverse waves.
And S4, arranging the probe at the left end of the reflector simulation test block and at a position 1T-2.7T away from the right side of the preset reference center line, enabling the main sound beam direction of the probe to be perpendicular to the preset reference center line, and moving the probe back and forth.
Wherein, the probe instrument is the ultrasonic flaw detector that industry flaw detection was used commonly, and the instrument model of the overwhelming majority type all can use, and the instrument model includes and is not limited to: USM35, USM36, USMGo, HS610e, and the like.
The common nominal frequency of the probe is 2-5 MHz, the wavelength of the probe sound beam in the workpiece is related to the material state of the workpiece, and the corresponding transverse wave wavelength of the 2-5 MHz probe in the common carbon steel material is about 0.6-1.7 mm, and the longitudinal wave wavelength is about 1.1-3 mm.
Specifically, the probe is arranged at the left end of the reflector simulation test block, and the main sound beam direction of the probe is perpendicular to the preset reference center line through the position of 1T-2.7T on the right side of the preset reference center line, and the probe is moved back and forth.
And S5, when the ultrasonic display screen displays a plurality of compact echoes and the amplitudes of the first two waves are the highest, moving the probe by 125-135 mm from left to right in parallel along the length direction of the probe wave-form conversion angle groove, observing the change of the number of the echoes, and sequentially reducing the number of the echoes to one echo.
Specifically, when the ultrasonic display screen displays a plurality of compact echoes and the amplitudes of the first two waves are the highest, the probe is moved in parallel from left to right along the length direction of the probe wave mode conversion angle slot by about 130mm, and the number of the echoes is sequentially reduced to one echo by observing the change of the number of the echoes. Because the reflectors of each group of reflectors are mutually staggered and have an overlapping area. One end of each group of reflectors is aligned, the lengths of the other ends of the reflectors are different, and the lengths of the reflectors are reduced in sequence. When the probe moves inwards from the end part, the quantity of the echoes generated by the reflector is gradually reduced due to the difference of the lengths of the reflector. The matching of the number of the echoes and the length of the reflector and the measurement of the distance between the echoes reflect the conditions of the root echoes, including the states of the echo types, the intensity and the like.
In an optional embodiment of the present invention, in S3, the step of determining the coordinate position of the probe wave mode conversion angle slot specifically includes: the right-angle top end of the probe wave-form conversion angle groove is arranged on the preset reference central line, the height from the bottom surface of the reflector simulation test block is 3mm, the right side groove surface and the preset reference central line form an included angle of 45-67 degrees, and the left side groove surface and the right side groove surface of the probe wave-form conversion angle groove are arranged perpendicularly to each other.
Specifically, the coordinate position of the first probe wave mode conversion angle slot 1 is determined: by disposing the right-angled tip of the first probe wave-form conversion angle groove 1 on the first reference center line 22, the height from the bottom surface of the reflector simulation test block is 3mm, the right side groove surface forms an angle of 45 ° with the first reference center line 22, and the left and right side groove surfaces of the first probe wave-form conversion angle groove 1 are disposed at 90 ° to each other.
Specifically, the coordinate position of the second probe wave mode conversion angle slot 6 is determined: by disposing the right-angled tip end of the second probe wave-form conversion angle groove 6 on the second reference center line 23, the height from the bottom surface of the reflector simulation block is 3mm, the right side groove surface forms an angle of 53 ° with the second reference center line 23, and the left and right side groove surfaces of the second probe wave-form conversion angle groove 6 are disposed at 90 ° to each other.
Specifically, the coordinate position of the third probe wave mode conversion angle slot 11 is determined: by disposing the right-angled tip end of the third probe wave-form conversion angle groove 11 on the third reference center line 24, the height from the bottom surface of the reflector simulation block is 3mm, the right groove surface forms an angle of 67 ° with the third reference center line 24, and the left and right groove surfaces of the third probe wave-form conversion angle groove 11 are disposed at 90 ° to each other.
Specifically, the coordinate position of the fourth probe wave mode conversion angle slot 16 is determined: by disposing the right-angled tip end of the fourth probe wave-form conversion angle groove 16 on the fourth reference center line 25, the height from the bottom surface of the reflector simulation block is 3mm, the right side groove surface forms an angle of 60 ° with the fourth reference center line 25, and the left and right side groove surfaces of the fourth probe wave-form conversion angle groove 16 are disposed at 90 ° to each other.
In an optional embodiment of the present invention, in S3, the step of determining the hole center position of the long transverse hole specifically includes: and arranging the long transverse hole at the left side of the preset reference center line, and arranging the depth position of the axis of the long transverse hole at one fourth of the thickness of the reflector simulation test block, so that an included angle of 5-35 degrees is formed between a connecting line of the center of the long transverse hole and the vertex of the probe wave form conversion angle groove and the preset reference center line.
Specifically, the hole center position of the first long transverse hole 2 is determined: by arranging the first long transverse hole 2 at the left side of the preset reference center line and by arranging the depth position of the axis of the first long transverse hole 2 at one quarter of the thickness of the reflector simulation test block, an included angle of 5 degrees is formed between the connecting line of the center of the first long transverse hole 2 and the vertex of the first probe wave-type conversion angle groove 1 and the first reference center line 22.
Specifically, the hole center position of the second long transverse hole 7 is determined: by arranging the second long transverse hole 7 at the left side of the preset reference center line and by arranging the depth position of the axis of the second long transverse hole 7 at one quarter of the thickness of the reflector simulation test block, an included angle of 30 degrees is formed between a connecting line of the center of the second long transverse hole 7 and the vertex of the second probe wave-form conversion angle groove 6 and the second reference center line 23.
Specifically, the hole center position of the third long transverse hole 12 is determined: by arranging the third long transverse hole 12 on the left side of the preset reference center line and by arranging the depth position of the axis of the third long transverse hole 12 at one quarter of the thickness of the reflector simulation test block, an included angle of 30 degrees is formed between a connecting line of the center of the third long transverse hole 12 and the vertex of the third probe wave-form conversion angle groove 11 and the third reference center line 24.
Specifically, the hole center position of the fourth long transverse hole 17 is determined: by arranging the fourth long transverse hole 17 on the left side of the preset reference center line and by arranging the depth position of the axial center of the fourth long transverse hole 17 at one quarter of the thickness of the reflector simulation test block, an included angle of 35 degrees is formed between a connecting line of the center of the fourth long transverse hole 17 and the vertex of the fourth probe wave-type conversion angle groove 16 and the fourth reference center line 25.
In an optional embodiment of the present invention, in S3, the step of determining the hole center position of the short transverse hole specifically includes: and arranging the short transverse hole at the left side of the preset reference center line, and arranging the depth position of the axis of the short transverse hole at one fourth of the thickness of the reflector simulation test block, so that an included angle of 1-24 degrees is formed between the connecting line of the center of the short transverse hole and the vertex of the probe wave form conversion angle groove and the preset reference center line.
Specifically, the hole center position of the first short transverse hole 3 is determined: by arranging the first short transverse hole 3 on the left side of the first reference center line 22 and by arranging the depth position of the axial center of the first short transverse hole 3 at one quarter of the thickness of the reflector simulation test block, an included angle of 24 degrees is formed between the line connecting the center of the first short transverse hole 3 and the vertex of the first probe wave mode conversion angle groove 1 and the first reference center line 22.
Specifically, the hole center position of the second short transverse hole 8 is determined: by arranging the second short transverse hole 8 on the left side of the second reference center line 23 and by arranging the depth position of the axial center of the second short transverse hole 8 at one quarter of the thickness of the reflector simulation test block, an angle of 10 ° is formed between the line connecting the center of the second short transverse hole 8 and the vertex of the second probe wave mode conversion angle groove 6 and the second reference center line 23.
Specifically, the hole center position of the third short transverse hole 13 is determined: by disposing the third short transverse hole 13 on the left side of the third reference center line 24, and by disposing the depth position of the axial center of the third short transverse hole 13 at one quarter of the thickness of the reflector simulation block, an angle of 15 ° is formed between the line connecting the center of the third short transverse hole 13 and the vertex of the third probe wave mode conversion angle groove 11 and the third reference center line 24.
Specifically, the hole center position of the fourth short transverse hole 18 is determined: by disposing the fourth short transverse hole 18 on the left side of the fourth reference center line 25, and by disposing the depth position of the axial center of the fourth short transverse hole 18 at one quarter of the thickness of the reflector phantom, the line connecting the center of the fourth short transverse hole 18 and the vertex of the fourth probe wave mode conversion angle groove 16 forms an angle of 1 ° with the fourth reference center line 25.
In an optional embodiment of the present invention, in S3, the step of determining the position of the upper-left longitudinal wave end angle reflection slot specifically includes: and the upper vertex coordinates of the upper left longitudinal wave end angle reflection groove are deviated to the left by 2mm at the intersection of the connecting line of the circle center of the long transverse hole and the vertex of the probe wave mode conversion angle groove and the upper surface of the reflector simulation test block.
Specifically, the position of the first upper left longitudinal wave end angle reflection groove 4 is determined: and (3) leftwards shifting the upper vertex coordinates of the first upper left longitudinal wave end angle reflection groove 4 to a position of 2mm at the intersection of the connecting line of the circle center of the first long transverse hole 2 and the vertex of the first probe wave mode conversion angle groove 1 and the upper surface of the reflector simulation test block.
Specifically, the position of the second upper left longitudinal wave end angle reflection groove 9 is determined: and the upper vertex coordinates of the second upper left longitudinal wave end angle reflection groove 9 are deviated to the left by 2mm at the intersection of the connecting line of the circle center of the second long transverse hole 7 and the vertex of the second probe wave mode conversion angle groove 6 and the upper surface of the reflector simulation test block.
Specifically, the position of the third upper-left longitudinal wave end angle reflection groove 14 is determined: and the coordinates of the upper vertex of the third upper left longitudinal wave end angle reflection groove 14 are deviated to the left by 2mm at the intersection of the connecting line of the circle center of the third long transverse hole 12 and the vertex of the third probe wave mode conversion angle groove 11 and the upper surface of the reflector simulation test block.
Specifically, the position of the fourth upper-left longitudinal wave end angle reflection groove 19 is determined: and the upper vertex coordinates of the fourth upper left longitudinal wave end angle reflection groove 19 are deviated to the left by 2mm at the intersection of the connecting line of the circle center of the fourth long transverse hole 17 and the vertex of the fourth probe wave mode conversion angle groove 16 and the upper surface of the reflector simulation test block.
In this embodiment, the upper left longitudinal wave end corner reflection groove is a rectangular open groove, the length of the rectangular open groove is 80mm, the groove depth is 1.6mm, and the groove width is 0.2 mm.
As an optional embodiment of the present invention, in S3, the step of determining the position of the upper right transverse wave end angle reflection slot specifically includes: and the coordinates of the upper vertex point of the right upper transverse wave end angle reflection groove are deviated to the right by 3-5mm at the intersection of the connecting line of the circle center of the long transverse hole and the vertex point of the probe wave mode conversion angle groove and the upper surface of the reflector simulation test block.
Specifically, the position of the first right upper transverse wave end angle reflection slot 5 is determined: and the coordinates of the upper vertex of the first right upper transverse wave end angle reflection groove 5 are deviated to the right by 5mm at the intersection of the connecting line of the circle center of the first long transverse hole 2 and the vertex of the first probe wave mode conversion angle groove 1 and the upper surface of the reflector simulation test block.
Specifically, the position of the second right upper transverse wave end angle reflection slot 10 is determined: and the coordinates of the upper vertex point of the second right upper transverse wave end angle reflection groove 10 are deviated to the right by 5mm at the intersection of the connecting line of the circle center of the second long transverse hole 7 and the vertex point of the second probe wave mode conversion angle groove 6 and the upper surface of the reflector simulation test block.
Specifically, the position of the third right upper transverse wave end angle reflection slot 15 is determined: and the coordinates of the upper vertex of the third right upper transverse wave end angle reflection groove 15 are deviated to the right by 3mm at the intersection of the connecting line of the circle center of the third long transverse hole 12 and the vertex of the third probe wave mode conversion angle groove 11 and the upper surface of the reflector simulation test block.
In this embodiment, the upper right horizontal wave end corner reflection slot is a rectangular open slot, the length of the rectangular open slot is 105mm, the slot depth is 1.6mm, and the slot width is 0.2 mm.
Specifically, the first right upper transverse wave end angle reflection groove 5, the second right upper transverse wave end angle reflection groove 10 and the third right upper transverse wave end angle reflection groove 15 are rectangular open grooves, the length of each rectangular open groove is 105mm, the groove depth is 1.6mm, and the groove width is 0.2 mm.
In this embodiment, the probe wave mode conversion angle groove includes: 45-degree probe wave mode conversion angle groove, 60-degree probe wave mode conversion angle groove, 70-degree probe wave mode conversion angle groove and 70-degree probe third critical wave mode conversion angle groove.
Specifically, the first probe wave-mode conversion angle groove 1 is a 70-degree probe wave-mode conversion angle groove, the second probe wave-mode conversion angle groove 6 is a 70-degree probe third critical wave-mode conversion angle groove, the third probe wave-mode conversion angle groove 11 is a 45-degree probe wave-mode conversion angle groove, and the fourth probe wave-mode conversion angle groove 16 is a 60-degree probe wave-mode conversion angle groove.
As shown in fig. 1 to 6, the specific implementation steps of the present invention are: the first step is as follows: the coordinate position of the first probe wave-form conversion angle slot 1 is determined. The right-angle top end of the first probe wave-form conversion angle groove 1 is arranged on a reference central line 22, the height from the bottom surface of the test block is 3mm, the right groove surface and the reference central line 22 form an included angle of 45 degrees, and the left groove surface and the right groove surface of the first probe wave-form conversion angle groove 1 are mutually vertical to form a 90 degree angle.
The second step is that: the hole center position of the first long transverse hole 2 is determined. The first long transverse hole 2 is arranged on the left side of the reference center line 22, the depth position of the axis of the first long transverse hole 2 is one fourth of the thickness of the test block, and a connecting line of the circle center of the first long transverse hole 2 and the vertex of the first probe wave-type conversion angle groove 1 forms an angle of 5 degrees with the reference center line 22.
The third step: the hole center position of the first short transverse hole 3 is determined. The first short transverse hole 3 is arranged at the right side of the reference center line 22, the depth position of the axle center of the first short transverse hole 3 is one fourth of the thickness of the test block, and a connecting line of the circle center of the first short transverse hole 3 and the vertex of the first probe wave-type conversion angle groove 1 forms 24 degrees with the reference center line 22.
The fourth step: the position of the first upper left longitudinal end angle reflection groove 4 is determined. The upper vertex coordinates of the first upper left longitudinal wave end angle reflection groove 4 are deviated to the left by 2mm at the intersection of the connecting line of the circle center of the first long transverse hole 2 and the vertex of the first probe wave mode conversion angle groove 1 and the upper surface of the test block. The first upper left longitudinal wave end corner reflection groove 4 is a rectangular open groove, the length of which is 80mm, the groove depth is 1.6mm, and the groove width is 0.2 mm.
The fifth step: the position of the first upper right transverse wavy end corner reflecting groove 5 is determined. And the upper vertex coordinates of the first right upper transverse wave end angle reflection groove 5 are deviated to the right by 5mm at the intersection of the connecting line of the circle center of the first short transverse hole 3 and the vertex of the first probe wave mode conversion angle groove 1 and the upper surface of the test block. The first right upper transverse wave end corner reflection groove 5 is a rectangular open groove, the length of the groove is 105mm, the groove depth is 1.6mm, and the groove width is 0.2 mm.
And a sixth step: the coordinate position of the second probe wave-form conversion angle slot 6 is determined. The right-angle top end of the second probe wave-form conversion angle groove 6 is arranged on the reference central line 23, the height from the bottom surface of the test block is 3mm, the right groove surface and the reference central line 23 form an included angle of 53 degrees, and the left and right groove surfaces of the second probe wave-form conversion angle groove 1 are mutually vertical to form a 90 degree angle.
The seventh step: the hole center position of the second long transverse hole 7 is determined. The second long transverse hole 7 is arranged on the left side of the reference center line 23, the depth position of the axis of the second long transverse hole 7 is one fourth of the thickness of the test block, and a line connecting the circle center of the second long transverse hole 7 and the vertex of the second probe wave-type conversion angle groove 6 forms 30 degrees with the reference center line 23.
Eighth step: the hole center position of the second short transverse hole 8 is determined. The depth position of the second short transverse hole 8 on the right side of the reference central line 23 of the second short transverse hole 8 is one fourth of the thickness of the test block, and a line connecting the circle center of the second short transverse hole 8 and the vertex of the second probe wave-form conversion angle groove 6 forms 10 degrees with the reference central line 23.
The ninth step: the position of the second upper left longitudinal end angle reflection groove 9 is determined. The upper vertex coordinates of the first upper left longitudinal wave end angle reflection groove 4 are deviated to the left by 2mm at the intersection of the connecting line of the circle center of the second long transverse hole 7 and the vertex of the second probe wave mode conversion angle groove 6 and the upper surface of the test block. The second upper left longitudinal wave end corner reflection groove 9 is a rectangular open groove, the length of which is 80mm, the groove depth is 1.6mm, and the groove width is 0.2 mm.
The tenth step: the position of the second upper right transverse wavy end corner reflective trough 10 is determined. The upper vertex coordinates of the second right upper transverse wave end angle reflection groove 10 are deviated to the right by 5mm at the intersection of the connecting line of the circle center of the second short transverse hole 8 and the vertex of the second probe wave mode conversion angle groove 6 and the upper surface of the test block. The second right upper transverse wave end corner reflection groove 10 is a rectangular open groove, the length of the groove is 105mm, the groove depth is 1.6mm, and the groove width is 0.2 mm.
The eleventh step: the position of the third probe wave-mode conversion angle groove 11 is determined. The right-angle top end of the third probe wave-form conversion angle groove 11 is positioned on the reference central line 24, the height from the bottom surface of the test block is 3mm, the right groove surface and the reference central line 24 form an included angle of 67 degrees, and the left and right groove surfaces of the third probe wave-form conversion angle groove 11 are mutually vertical to form a 90-degree angle.
The twelfth step: the hole center position of the third long transverse hole 12 is determined. The third long transverse hole 12 is arranged on the left side of the reference center line 24, the depth position of the axial center of the third long transverse hole 12 is arranged at one fourth of the thickness of the test block, and a line connecting the circle center of the third long transverse hole 12 and the vertex of the third probe wave-type conversion angle groove 11 forms a 20-degree angle with the reference center line 24.
The thirteenth step: the hole center position of the third short transverse hole 13 is determined. The third short transverse hole 13 is arranged at the right side of the reference center line 24, the depth position of the axial center of the third short transverse hole 13 is arranged at a quarter of the thickness of the test block, and a line connecting the circle center of the third short transverse hole 13 and the vertex of the third probe wave-type conversion angle groove 11 forms an angle of 15 degrees with the reference center line 24.
The fourteenth step is that: the position of the third upper left longitudinal end angle reflecting groove 14 is determined. The upper vertex coordinates of the third upper left longitudinal wave end angle reflection groove 14 are deviated to the left by 2mm at the intersection of the line between the center of the third long transverse hole 12 and the vertex of the third probe wave mode conversion angle groove 11 and the upper surface of the test block. The third upper left longitudinal wave end corner reflection groove 14 is a rectangular open groove, the length of which is 80mm, the groove depth is 1.6mm, and the groove width is 0.2 mm.
The fifteenth step: the position of the third upper right transverse wavy end corner reflective trough 15 is determined. The upper vertex coordinates of the first right upper transverse wave end angle reflection groove 5 are deviated to the right by 3mm at the intersection of the connecting line of the circle center of the third short transverse hole 13 and the vertex of the third probe wave mode conversion angle groove 11 and the upper surface of the test block. The third right upper transverse wave end corner reflection groove 15 is a rectangular open groove, the length of the rectangular open groove is 105mm, the groove depth is 1.6mm, and the groove width is 0.2 mm.
Sixteenth, step: the position of the fourth probe wave-mode conversion angle slot 16 is determined. The right-angle top end of the fourth probe wave-form conversion angle groove 16 is positioned on the reference central line 25, the height from the bottom surface of the test block is 3mm, the right side groove surface and the reference central line 25 form an included angle of 60 degrees, and the left side groove surface and the right side groove surface of the fourth probe wave-form conversion angle groove 16 are mutually vertical to form an angle of 90 degrees.
Seventeenth step: the hole center position of the fourth long transverse hole 17 is determined. The fourth long transverse hole 17 is arranged on the left side of the reference center line 25, the depth position of the axial center of the fourth long transverse hole 17 is arranged at a quarter of the thickness of the test block 26, and a connecting line of the circle center of the fourth long transverse hole 17 and the vertex of the fourth probe wave-type conversion angle groove 16 forms 35 degrees with the reference center line 25.
And eighteenth step: the hole center position of the fourth short transverse hole 18 is determined. The fourth short transverse hole 18 is arranged at the right side of the reference center line 25, the depth position of the axial center of the fourth short transverse hole 18 is arranged at one fourth of the thickness of the test block 26, and a connecting line of the circle center of the fourth short transverse hole 18 and the vertex of the fourth probe wave-type conversion angle groove 16 forms 1 degree with the reference center line 25.
The nineteenth step: the position of the fourth longitudinal-wave-end angle reflection groove 19 is determined. The coordinate of the upper vertex of the fourth longitudinal wave end angle reflection groove 19 is deviated to the left by 2mm at the intersection of the line connecting the center of the fourth long transverse hole 17 and the vertex of the fourth probe wave mode conversion angle groove 16 and the upper surface of the test block. The fourth longitudinal wave end corner reflection groove 19 is a rectangular open groove, the length of which is 80mm, the groove depth is 1.6mm, and the groove width is 0.2 mm.
In the first step, the sixth step, the tenth step and the sixteenth step, the lengths of the wave mode conversion angle grooves are 130mm respectively.
In the second step, the seventh step, the twelfth step and the seventeenth step, the length of the long transverse hole is 55mm respectively, and the aperture is 1.5 mm.
In the third step, the eighth step, the tenth step and the eighteenth step, the length of the short transverse hole is 30mm respectively, and the aperture is 1.5 mm.
When in use, the method comprises the following specific steps: step 1, a 70-degree nominal angle probe is placed at a position, which is about 2.7T away from the right side of a first reference line 20, of the left end part of a test block, the main sound beam direction of the probe is perpendicular to the first reference line 20, the probe is slightly moved back and forth, when an ultrasonic display screen displays 4 compact echoes and the amplitudes of the first two waves are the highest, the probe is moved in parallel from left to right along the length direction of a 70-degree probe wave-form conversion angle groove 1 for about 130mm, the change of the number of the echoes is observed, and the number of the echoes is reduced in sequence. The number of echoes is reduced from 4 to 3, then to 2 and then to 1.
And 2, placing the 70-degree nominal angle probe at a position which is about 2.7T-10mm away from the right side of the first reference line 20 at the right end part of the test block, wherein the main sound beam direction of the probe is vertical to the first reference line 20, slightly moving the probe back and forth, and when 4 compact echoes are displayed on the ultrasonic display screen and the amplitudes of the first two waves are the highest, parallelly moving the probe about 130mm from the right side to the left side along the length direction of the 70-degree probe wave form conversion angle groove 6, observing the change of the number of the echoes, and sequentially reducing the number of the echoes. The number of echoes is reduced from 4 to 3, then to 2 and finally to 1.
And 3, placing the 70-degree nominal angle probe at a position which is about 2.7T +10mm away from the right side of the first reference line 20 at the right end part of the test block, wherein the main sound beam direction of the probe is vertical to the first reference line 20, slightly moving the probe forwards and backwards, and when the ultrasonic display screen displays 2 compact echoes and the amplitude of the previous wave is higher, moving the probe about 130mm from the right side to the left side in parallel along the length direction of the 70-degree probe wave form conversion angle groove 6 to observe the change of the number of the echoes, wherein the number of the echoes is reduced in sequence. The number of echoes is reduced from 2 to 1 in turn.
And 4, placing the 45-degree nominal angle probe at a position which is approximately T away from the right side of the second reference line 21 at the right end part of the test block, wherein the main sound beam direction of the probe is vertical to the second reference line 21, slightly moving the probe forwards and backwards, and when 4 compact echoes are displayed on the ultrasonic display screen and the amplitudes of the first two waves are the highest, moving the probe approximately 130mm from the right side to the left side in the length direction of the 45-degree probe wave-form conversion angle groove 11 in parallel, observing the change of the number of the echoes, and sequentially reducing the number of the echoes. The number of echoes is reduced from 4 to 3, then to 2 and finally to 1.
And 5, placing the 60-degree nominal angle probe at a position which is about 1.7T away from the right side of the second reference line 21 at the right end part of the test block, wherein the main sound beam direction of the probe is vertical to the second reference line 21, slightly moving the probe forwards and backwards, and when 4 compact echoes are displayed on the ultrasonic display screen and the amplitudes of the first two waves are the highest, moving the probe by about 130mm from left to right in parallel along the length direction of the 60-degree probe wave-form conversion angle groove 16, observing the change of the number of the echoes, and sequentially reducing the number of the echoes. The number of echoes is reduced from 4 to 3, then to 2 and finally to 1. When the probe moves inwards from the end part, the quantity of the echoes generated by the reflector is gradually reduced due to the difference of the lengths of the reflector. The matching of the number of the echoes and the length of the reflector and the measurement of the distance between the echoes reflect the conditions of the root echoes, including the states of the echo types, the intensity and the like.
The invention also provides a root reflector simulation test block for ultrasonic detection of a reel pipe weld joint, as shown in fig. 2, comprising: a 70-degree probe wave mode conversion angle groove 1, a 70-degree probe third critical wave mode conversion angle groove 6, a 45-degree probe wave mode conversion angle groove 11, a 60-degree probe wave mode conversion angle groove 16, a left upper longitudinal wave end angle reflection groove, a right upper transverse wave end angle reflection groove, a long transverse hole and a short transverse hole.
Wherein the 70-degree probe wave mode conversion angle groove, the 70-degree probe third critical wave mode conversion angle groove, the 45-degree probe wave mode conversion angle groove, the 60-degree probe wave mode conversion angle groove, the upper left longitudinal wave end angle reflection groove, the upper right transverse wave end angle reflection groove, the long transverse hole and the short transverse hole are parallel to each other in the length direction. The method can effectively meet the requirement for distinguishing the root reflector of the welding seam of the single-side welding double-side forming reel pipe, and solves the problem that the root reflector is difficult to distinguish by ultrasonic detection; but also improves the on-site inspection efficiency and ensures the welding quality.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.

Claims (10)

1. A method for setting a simulation test block of a root reflector for ultrasonic detection of a reel pipe weld joint is characterized by comprising the following steps of: the method comprises the following steps:
s1, presetting at least 4 groups of reflectors;
s2, presetting the position of a reference center line on the reflector;
s3, determining the coordinate position of the probe wave-form conversion angle groove, the hole center position of the long transverse hole, the hole center position of the short transverse hole, the position of the upper left longitudinal wave end angle reflection groove and the position of the upper right longitudinal wave end angle reflection groove according to the position of the preset reference center line;
s4, arranging a probe at the left end of the reflector simulation test block and at a position 1T-2.7T away from the right side of the preset reference center line, enabling the main sound beam direction of the probe to be perpendicular to the preset reference center line, and moving the probe back and forth;
and S5, when the ultrasonic display screen displays a plurality of compact echoes and the amplitudes of the first two waves are the highest, moving the probe by 125-135 mm from left to right in parallel along the length direction of the probe wave mode conversion angle groove, and observing the change of the number of the echoes, wherein the number of the echoes is reduced to one echo in turn.
2. The method for setting the root reflector simulation test block for ultrasonic testing of the pipe coil weld according to claim 1, wherein in S3, the step of determining the coordinate position of the probe wave-form conversion angle groove includes:
the right-angle top end of the probe wave-form conversion angle groove is arranged on the preset reference central line, the height from the bottom surface of the reflector simulation test block is 3mm, the right side groove surface and the preset reference central line form an included angle of 45-67 degrees, and the left side groove surface and the right side groove surface of the probe wave-form conversion angle groove are arranged perpendicularly to each other.
3. The method for setting the root reflector simulation test block for ultrasonic detection of the reel pipe weld according to claim 1, wherein in S3, the step of determining the hole center position of the long transverse hole includes:
and arranging the long transverse hole at the left side of the preset reference center line, and arranging the depth position of the axis of the long transverse hole at one fourth of the thickness of the reflector simulation test block, so that an included angle of 5-35 degrees is formed between a connecting line of the center of the long transverse hole and the vertex of the probe wave form conversion angle groove and the preset reference center line.
4. The method for setting the root reflector simulation test block for ultrasonic detection of the coil pipe weld according to claim 1, wherein in the step S3, the step of determining the hole center position of the short transverse hole includes:
and arranging the short transverse hole at the left side of the preset reference center line, and arranging the depth position of the axis of the short transverse hole at one fourth of the thickness of the reflector simulation test block, so that an included angle of 1-24 degrees is formed between the connecting line of the center of the short transverse hole and the vertex of the probe wave form conversion angle groove and the preset reference center line.
5. The method for setting the root reflector simulation test block for ultrasonic detection of the pipe coil weld according to claim 1, wherein in the step S3, the step of determining the position of the upper left longitudinal wave end corner reflection groove includes:
and the upper vertex coordinates of the upper left longitudinal wave end angle reflection groove are deviated to the left by 2mm at the intersection of the connecting line of the circle center of the long transverse hole and the vertex of the probe wave mode conversion angle groove and the upper surface of the reflector simulation test block.
6. The method for setting the root reflector simulation test block for ultrasonic detection of the pipe coiling welding line according to claim 5, wherein the corner reflection groove at the upper left longitudinal wave end is a rectangular open groove, the length of the rectangular open groove is 80mm, the groove depth is 1.6mm, and the groove width is 0.2 mm.
7. The method for setting the root reflector simulation test block for ultrasonic detection of the reel pipe weld according to claim 1, wherein in S3, the step of determining the position of the upper right transversal wave end corner reflection groove includes:
and the coordinates of the upper vertex point of the right upper transverse wave end angle reflection groove are deviated to the right by 3-5mm at the intersection of the connecting line of the circle center of the long transverse hole and the vertex point of the probe wave mode conversion angle groove and the upper surface of the reflector simulation test block.
8. The method for setting the root reflector simulation test block for ultrasonic detection of the reel pipe weld according to claim 7, wherein the upper right horizontal wave end corner reflection groove is a rectangular open groove, the length of the rectangular open groove is 105mm, the groove depth is 1.6mm, and the groove width is 0.2 mm.
9. The method for setting the simulation test block of the root reflector for ultrasonic detection of the pipe-coiling welding seam according to claim 1, wherein the probe wave-type conversion angle groove comprises: 45-degree probe wave mode conversion angle groove, 60-degree probe wave mode conversion angle groove, 70-degree probe wave mode conversion angle groove and 70-degree probe third critical wave mode conversion angle groove.
10. The utility model provides a reelpipe welding seam ultrasonic testing root reflector simulation test block which characterized in that includes:
a 70-degree probe wave form conversion angle groove, a 70-degree probe third critical wave form conversion angle groove, a 45-degree probe wave form conversion angle groove, a 60-degree probe wave form conversion angle groove, a left upper longitudinal wave end angle reflection groove, a right upper transverse wave end angle reflection groove, a long transverse hole and a short transverse hole;
wherein the 70-degree probe wave mode conversion angle groove, the 70-degree probe third critical wave mode conversion angle groove, the 45-degree probe wave mode conversion angle groove, the 60-degree probe wave mode conversion angle groove, the upper left longitudinal wave end angle reflection groove, the upper right transverse wave end angle reflection groove, the long transverse hole and the short transverse hole are parallel to each other in the length direction.
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