CN216285085U - Stainless steel clad steel plate welding seam ultrasonic testing calibration test block - Google Patents
Stainless steel clad steel plate welding seam ultrasonic testing calibration test block Download PDFInfo
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- CN216285085U CN216285085U CN202122621683.0U CN202122621683U CN216285085U CN 216285085 U CN216285085 U CN 216285085U CN 202122621683 U CN202122621683 U CN 202122621683U CN 216285085 U CN216285085 U CN 216285085U
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Abstract
The utility model relates to an ultrasonic detection calibration test block for a stainless steel clad steel plate weld joint, which is characterized in that a semicircular calibration test block and a strip-shaped calibration test block are manufactured by selecting and using a stainless steel clad steel plate; the stainless steel composite layers of the semicircular calibration test block and the strip-shaped calibration test block are used as a part of the probe; placing the probe on a stainless steel composite layer of a semicircular calibration test block, moving back and forth, and searching the highest reflected wave to carry out scanning range and probe front edge calibration; and placing the probe on a stainless steel composite layer of the strip calibration test block, selecting one reference hole on the strip calibration test block for angle calibration, moving the probe back and forth on the stainless steel composite layer of the strip calibration test block to find out the highest reflected wave of all the reference holes, and making a distance-amplitude curve. The utility model can simulate the actual stainless steel clad steel plate, and manufacture the corresponding calibration test block for calibrating the equipment and the probe, so that the ultrasonic detection technology can be practically applied to the weld joint detection of the stainless steel clad steel plate.
Description
Technical Field
The utility model belongs to the technical field of steel structure bridge manufacturing, and particularly relates to an ultrasonic detection calibration test block for a stainless steel composite steel plate weld joint.
Background
The stainless steel composite steel plate for the bridge is composed of two metal materials, wherein carbon steel is used as a substrate, and the single surface of the substrate is continuously coated with 3mm stainless steel, and ultrasonic waves have different propagation sound velocities between the two different media. When ultrasonic waves are used for detecting the welding seam of the stainless steel composite steel plate, refraction occurs at two interfaces, displacement occurs in the location of the defect level and the depth, and the repair is influenced; when the selected probe is not suitable, detection omission and misjudgment are easily caused; meanwhile, the oblique probe transverse wave detection standard of the stainless steel composite steel plate welding seam does not exist at home and abroad, and the oblique probe transverse wave detection standard is in respective exploration stages. Therefore, the application of ultrasonic waves in the detection of the weld joint of the clad steel plate is also limited by certain objective conditions.
And simulating an actual stainless steel clad plate, and manufacturing a corresponding calibration test block for calibrating equipment and a probe, so that the ultrasonic detection technology can be practically applied to the detection of the weld joint of the stainless steel clad plate.
The use mode of the standard test block for the conventional ultrasonic detection of the weld joint is as follows: adjusting the scanning range and the front edge of the probe by using R50 and R100, and adjusting the angle (K value) of the probe by using plexiglass with the diameter phi of 50; the use mode of the conventional contrast test block for ultrasonic detection of the weld joint is as follows: and adjusting the DAC curve by using a phi 3 long transverse hole.
However, if the test block and the method adjusting instrument for the conventional ultrasonic detection of the weld joint are used for the actual stainless steel clad steel plate weld joint, the following problems mainly exist: (1) the angular refraction occurs on the composite layer, so that the displacement occurs on the location of the defect level and the depth, and the repair is influenced; (2) because the composite layer and the base layer are made of different materials, the attenuation is different, and sensitivity deviation is also caused.
The detection of the internal defects of the welding seams in the bridge mainly comprises ultrasonic detection and ray detection; for X-ray detection of ray detection, the X-ray detection cannot be used in a bridge in a large area due to the following reasons that firstly, enormous workload is involved if X-rays are selected; the X-ray has radiation risk to human body and environment; and thirdly, the X-ray detection method is time-consuming and labor-consuming.
For conventional ultrasonic detection, due to the fact that the materials of the composite layer and the base layer in the composite steel plate are different, sound velocities of the two materials are different, the sound waves are transmitted at different interfaces, loss and deflection affect the effect of ultrasonic detection, and at present, no corresponding composite steel plate welding line detection related standard exists domestically.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model provides a calibration test block which has reasonable and ingenious conception, can simulate the actual stainless steel composite steel plate and is correspondingly used for calibrating equipment and a probe, so that the ultrasonic detection technology can be practically applied to the detection and calibration test block in the detection of the welding seam of the stainless steel composite steel plate.
The technical scheme of the utility model is as follows:
a stainless steel clad steel plate welding seam ultrasonic detection calibration test block comprises a semicircular calibration test block and a strip-shaped calibration test block; the left end and the right end of the semicircular calibration test block are provided with R50 arcs used for forming reflection echoes on emitted waves in a matching mode, and the front side and the rear side of the semicircular calibration test block are symmetrically provided with composite layer lower cutting grooves used for reflecting primary echoes in a matching mode; one end of the strip-shaped calibration test block is provided with a reference hole in a matching way; the depth of the reference holes from the top of the strip-shaped calibration test block is sequentially increased step by step, and the distances of the reference holes in the horizontal direction are equal; the reference holes have two functions, namely, the angle of the probe is calibrated, and the distance-amplitude curve is drawn through the reference holes with different depths.
The stainless steel clad steel plate welding seam ultrasonic testing calibrates the test block, wherein: the R50 arc is a base layer arc and does not contain a composite layer; the lower cutting grooves of the composite layer are provided with a pair of cutting grooves which are symmetrically matched and arranged in the middle of the top ends of the front side and the rear side of the semicircular calibration test block; the width of the composite layer lower cutting groove is 0.5 mm; and one end of the strip-shaped calibration test block is provided with four phi 3 x 40 long transverse holes in a matching way to serve as four reference holes.
The stainless steel clad steel plate welding seam ultrasonic testing calibrates the test block, wherein: the semicircular calibration test block and the strip-shaped calibration test block both use a stainless steel composite layer with the thickness of 3 mm.
The detection method for the ultrasonic detection calibration test block of the welding seam of the stainless steel clad steel plate firstly selects the stainless steel clad steel plate which is consistent with the field use rolling process to manufacture a semicircular calibration test block and a strip calibration test block; then, taking the stainless steel composite layer of the manufactured semicircular calibration test block as a part of the probe, placing the probe on the stainless steel composite layer of the semicircular calibration test block to move back and forth to search for the highest reflected wave, and calibrating the scanning range and the front edge of the probe; and then taking the stainless steel composite layer of the manufactured strip calibration test block as a part of the probe, placing the probe on the stainless steel composite layer of the strip calibration test block, selecting one reference hole preset on the strip calibration test block in advance for angle calibration, moving the probe back and forth on the stainless steel composite layer of the strip calibration test block to find out the highest reflected wave of all the reference holes preset on the strip calibration test block, and manufacturing a distance-amplitude curve.
The ultrasonic detection and calibration method for the welding seam of the stainless steel clad steel plate comprises the following steps: the left end and the right end of the semicircular calibration test block are provided with R50 circular arcs used for forming reflected echoes on the transmitted waves in a matching manner; the R50 arc is a base layer arc and does not contain a composite layer: and both sides of the center of the semicircular calibration test block are provided with composite layer lower cutting grooves with the width of 0.5mm, the length of 5mm and the height of 5mm in a matching manner.
The ultrasonic detection and calibration method for the welding seam of the stainless steel clad steel plate comprises the following steps: the semicircle calibration test block can be used for scanning range calibration and probe front edge calibration in the following two ways: firstly, the scanning range calibration can be carried out by utilizing the primary wave acoustic path 50 and the secondary wave acoustic path 100 at the positions of the undercut groove of the composite layer, and meanwhile, the front edge of the probe is calibrated; secondly, the scanning range calibration can be carried out by utilizing the primary wave acoustic path 50 and the secondary wave acoustic path 150 without the undercut groove of the composite layer, and meanwhile, the front edge of the probe is calibrated.
The ultrasonic detection and calibration method for the welding seam of the stainless steel clad steel plate comprises the following steps: one end of the strip-shaped calibration test block is provided with four phi 3 x 40 long transverse holes in a matching way to serve as four reference holes; the vertical distance (namely the depth) between the four reference holes and the top of the strip-shaped calibration test block is gradually increased, and the distances between the four reference holes in the horizontal direction are equal; the reference holes have two functions, namely, the angle of the probe is calibrated, and the distance-amplitude curve is drawn through the reference holes with different depths.
The ultrasonic detection and calibration method for the welding seam of the stainless steel clad steel plate comprises the following steps: the thickness of the stainless steel composite layer of the semicircular calibration test block and the strip-shaped calibration test block is 3 mm.
Has the advantages that:
the ultrasonic detection calibration test block for the welding seam of the stainless steel clad steel plate has reasonable and ingenious conception, and considers the influence of the stainless steel clad layer on the detection, so that the ultrasonic detection technology is practically applied to the detection of the welding seam of the stainless steel clad steel plate.
The utility model can not only absorb the advantages of safety, environmental protection, high efficiency, high sensitivity and the like of the conventional ultrasonic detection technology, but also solve the defects of heavy work, high environmental radiation risk, high time and labor cost of X-ray detection and positioning deviation and quantitative error of the conventional ultrasonic detection technology in the detection of the welding seam of the clad steel plate.
Drawings
FIG. 1 is a front view of a semicircular calibration block of the ultrasonic testing calibration block for a weld joint of a stainless steel clad steel plate according to the present invention;
FIG. 2 is a top view of a semicircular calibration block of the ultrasonic testing calibration block for a weld joint of a stainless steel clad steel plate according to the present invention;
FIG. 3 is a front view of a semicircular calibration test block calibrated by using a primary wave R50 and a secondary wave R100 scanning range with notch positions in the ultrasonic detection calibration method for the weld joint of the stainless steel clad steel plate;
FIG. 4 is a top view of a semicircular calibration test block calibrated by using a primary wave R50 and a secondary wave R100 scanning range with notch positions in the ultrasonic detection calibration method for the weld joint of the stainless steel clad steel plate;
FIG. 5 is a top view of a semicircular calibration block calibrated by using a scanning range of a primary wave R50 and a secondary wave R150 with notch positions in the ultrasonic detection calibration method for the weld joint of the stainless steel clad steel plate;
FIG. 6 is a front view of a bar-shaped calibration block of the ultrasonic testing calibration block for a weld joint of a stainless steel clad steel plate according to the present invention;
FIG. 7 is a top view of a bar-shaped calibration block of the ultrasonic testing calibration block for a weld joint of a stainless steel clad steel plate according to the present invention;
FIG. 8 is a schematic diagram of angle calibration performed by a bar-shaped calibration block of the ultrasonic testing calibration block for a weld joint of a stainless steel clad steel plate according to the present invention;
FIG. 9 is a schematic diagram of DAC curve drawing of the strip calibration block of the ultrasonic testing calibration block for the weld joint of the stainless steel clad steel plate according to the present invention.
Detailed Description
As shown in fig. 1 to 9, the ultrasonic detection calibration test block for the weld joint of the stainless steel clad steel plate of the utility model is prepared by selecting the stainless steel clad steel plate which is consistent with the field rolling process to manufacture a semicircular calibration test block 1 and a strip-shaped calibration test block 2; then, taking the stainless steel composite layer of the manufactured semicircular calibration test block 1 as a part of the probe 4, placing the probe 4 on the stainless steel composite layer of the semicircular calibration test block 1 to move back and forth to search for the highest reflected wave, and calibrating the scanning range and the front edge of the probe 4; then, the manufactured stainless steel composite layer of the strip calibration test block 2 is used as a part of the probe 4, the probe 4 is placed on the stainless steel composite layer of the strip calibration test block 2, one of the reference holes preset on the strip calibration test block 2 in advance is selected for angle calibration, then the probe 4 moves back and forth on the stainless steel composite layer of the strip calibration test block 2, the highest reflected waves of all the reference holes preset on the strip calibration test block are found, and a DAC curve (distance-amplitude curve) is manufactured.
As shown in fig. 1 and 2, the left and right ends of the semicircular calibration block 1 are provided with R50 arcs 11(R50 arc 11 is a base layer arc and does not contain a composite layer) for forming reflected echoes to the transmitted waves in a matching manner, and a pair of composite layer lower slots 12 with a width of 0.5mm are symmetrically formed in the middle of the top ends of the front and rear sides in a matching manner; the composite layer undercut 12 is used for reflecting a primary echo to form a secondary wave with a display sound path of 100; the R50 arc 11 is used for forming a reflection echo for the transmitted wave; the semicircular calibration test block 1 uses a stainless steel composite layer 3 with the thickness of 3 mm; the material, the thickness and the compounding method of the stainless steel composite layer 3 are consistent with those of an actual product, namely the rolling process is consistent with field use.
As shown in fig. 6 and 7, one end of the strip calibration block 2 is provided with four phi 3 × 40 long transverse holes as four reference holes 21; the vertical distance, namely the depth, from the four reference holes 21 to the top of the strip-shaped calibration test block 2 is sequentially increased step by step, and the distances between the four reference holes 21 in the horizontal direction are equal; the reference holes 21 have two functions, one is to calibrate the angle (K value) of the probe 4, and the other is to draw a DAC curve (distance-amplitude curve) through the reference holes 21 of different depths; the strip-shaped calibration test block 2 uses a stainless steel composite layer 3 with the thickness of 3mm, and the rolling process is consistent with the field use.
The specific process of the scanning range calibration of the semicircular calibration test block 1 and the front edge calibration of the probe 4 is as follows: in the debugging calibration process, regard the stainless steel composite bed of semicircle calibration test block 1 as probe 4 partly, place probe 4 on the stainless steel composite bed of semicircle calibration test block 1 back-and-forth movement and look for the highest reflection wave of R50 circular arc, carry out scanning range calibration and probe 4 leading edge calibration, can choose to carry out with following two kinds of modes: (1.1) the scanning range calibration can be carried out by utilizing the primary wave acoustic path 50 and the secondary wave acoustic path 100 of the position of the lower cutting groove 12 with the composite layer, and the front edge of the probe 4 is calibrated at the same time, wherein the positions are shown in fig. 3 and fig. 4(a and b); (1.2) the scanning range calibration can be carried out by utilizing the primary wave sound path 50 and the secondary wave sound path 150 of the positions of the compound-layer-free lower cutting groove 12, and meanwhile, the front edge of the probe 4 is calibrated; the positions are shown in fig. 3 and 5 (c).
The specific process of the angle test of the probe 4 of the strip calibration test block 2 and the DAC curve drawing is as follows: in the debugging and calibrating process, a stainless steel composite layer of a strip-shaped calibrating test block 2 is taken as a part of a probe 4, the probe 4 is placed on the stainless steel composite layer of the strip-shaped calibrating test block 2, a reference hole 21 is selected for angle (K value) calibration, the highest wave is searched by back and forth movement, the specific example is shown in figure 8, the probe 4 is placed on the stainless steel composite layer of the strip-shaped calibrating test block 2, the highest reflected waves of four reference holes 21 on the strip-shaped calibrating test block 2 are respectively found by back and forth movement of the probe 4, and a DAC curve (distance-amplitude curve) is manufactured, which is shown in figure 9.
The method takes the influence of a stainless steel composite layer on sound waves into consideration, combines a stainless steel composite plate with 16m of base layer thickness +3mm of composite layer thickness and 20mm of base layer thickness +3mm of composite layer thickness used on site, and selects a stainless steel composite plate consistent with a rolling process used on site to manufacture a related calibration test block, wherein the test block uses a stainless steel composite plate with 50mm of base material and 3mm of stainless steel composite layer.
The utility model has reasonable and ingenious conception and simple operation, and can make the ultrasonic detection technology be practically applied to the detection of the welding line of the stainless steel clad plate by simulating the actual stainless steel clad plate to manufacture the corresponding calibration test block for calibrating the equipment and the probe.
Claims (3)
1. The utility model provides a stainless steel clad steel plate welding seam ultrasonic testing calibration test block which characterized in that: the ultrasonic detection calibration test block comprises a semicircular calibration test block (1) and a strip-shaped calibration test block (2);
the left end and the right end of the semicircular calibration test block (1) are provided with R50 circular arcs (11) used for forming reflected echoes to transmitted waves in a matching mode, and the front side and the rear side of the semicircular calibration test block are symmetrically provided with composite layer lower cutting grooves (12) used for reflecting primary echoes in a matching mode;
one end of the strip-shaped calibration test block (2) is provided with a reference hole (21) in a matching way; the depth of the reference holes (21) from the top of the strip-shaped calibration test block (2) is gradually increased, and the distances of the reference holes (21) in the horizontal direction are equal; the reference holes (21) have two functions, namely, the angle used for calibrating the probe (4) and the distance-amplitude curve drawn by the reference holes (21) with different depths.
2. The ultrasonic testing calibration test block for the weld joint of the stainless steel clad steel plate as claimed in claim 1, wherein: the R50 arc (11) is a base layer arc and does not contain a composite layer; the composite layer lower cutting groove (12) is provided with a pair of matched and symmetrically arranged in the middle of the top ends of the front side and the rear side of the semicircular calibration test block (1); the width of the composite layer lower cutting groove (12) is 0.5 mm; one end of the strip-shaped calibration test block (2) is provided with four phi 3 x 40 long transverse holes in a matching way to serve as four reference holes (21).
3. The ultrasonic testing calibration test block for the weld joint of the stainless steel clad steel plate as claimed in claim 1, wherein: the semicircular calibration test block (1) and the strip-shaped calibration test block (2) both use a stainless steel composite layer (3) with the thickness of 3 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122621683.0U CN216285085U (en) | 2021-10-28 | 2021-10-28 | Stainless steel clad steel plate welding seam ultrasonic testing calibration test block |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122621683.0U CN216285085U (en) | 2021-10-28 | 2021-10-28 | Stainless steel clad steel plate welding seam ultrasonic testing calibration test block |
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| CN216285085U true CN216285085U (en) | 2022-04-12 |
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| CN202122621683.0U Active CN216285085U (en) | 2021-10-28 | 2021-10-28 | Stainless steel clad steel plate welding seam ultrasonic testing calibration test block |
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