CN116223633A - R angle structure ultrasonic detection reference block - Google Patents

R angle structure ultrasonic detection reference block Download PDF

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Publication number
CN116223633A
CN116223633A CN202211553070.0A CN202211553070A CN116223633A CN 116223633 A CN116223633 A CN 116223633A CN 202211553070 A CN202211553070 A CN 202211553070A CN 116223633 A CN116223633 A CN 116223633A
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reference block
ultrasonic detection
detection reference
flat bottom
ultrasonic
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Inventor
刘许龙
吴军
贺永海
王猛
陈志旋
陈历萍
商傲雪
孙锟鹏
吴泽锴
阴少锋
岳挺
吴新卫
王云龙
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Xi'an Spaceflight Power Machinery Co ltd
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Xi'an Spaceflight Power Machinery 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
    • G01N29/22—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
    • 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
    • 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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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Acoustics & Sound (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

The first side face and the second side face form the width of the ultrasonic detection reference test block; the front surface and the rear surface form the thickness of an ultrasonic detection reference block; the first and second sides are perpendicular to the rear and front surfaces, respectively. The upper surface of the ultrasonic detection reference block is provided with a second transition surface at the edge adjacent to the first side surface, and a first transition surface at the edge adjacent to the second side surface. Two flat bottom holes are arranged on the convex arc surface, distributed on two sides of the central line of the ultrasonic detection reference block in the width direction and positioned on the central line of the ultrasonic detection reference block in the thickness direction. The method is used for sensitivity adjustment and defect equivalent size assessment of ultrasonic detection of the R-angle structure of the metal die forging, is directly used for detection sensitivity adjustment and defect equivalent size assessment of longitudinal wave detection of the R-angle structure under the condition of no need of curved surface compensation, avoids errors existing in curved surface compensation when the formula is used for calculation, and further improves accuracy of detection results of the R-angle structure.

Description

R angle structure ultrasonic detection reference block
Technical Field
The invention relates to the field of ultrasonic detection, in particular to an ultrasonic detection reference block with a curved surface structure.
Background
The forging is a common metal structural member raw material of the solid rocket engine. In the prior art, the free forging with simple structure is always the first choice raw material of the metal structural part, which is influenced by factors such as manufacturing cost, forging process and the like. However, the free forging has the problems of large processing amount, low material utilization rate, long processing period, serious damage to metal streamline of complex structural members and the like. In recent years, with the progress of forging technology, the production progress of products is compressed, the overall performance requirement of the products is improved, and more metal structural parts adopt die forgings to replace free forgings. The R-angle structure is a common structural form of a solid rocket engine structural member, is mainly used for a structural profile transition part, is a part easy to generate forging defects, and is also a weak link of product bearing force. Therefore, the quality control of the R-angle structure of the die forging is very important.
The die forging for the metal component of the solid rocket engine mainly adopts longitudinal waves to detect the internal quality, the incident surface is the outer surface of the part, and a reference block is required to be used for adjusting the detection sensitivity and evaluating the defect size. The conventional reference test block is a standard test block for longitudinal wave inspection, the internal defect of the test block is a flat bottom hole, the incident surface is a plane, and the incident surface of the R-angle structure is a concave arc, so that the test block cannot be directly used, curved surface compensation is required to be carried out according to formula calculation, but the method has the problem that the deviation between a theoretical value and an actual value is large, and the risks of missing detection and false detection exist in the actual application process.
The patent of the invention, which is entitled CN 106124638B, discloses an R-angle structure with a flat bottom hole, which is applicable to the detection of R-angle structures of composite materials with radius of curvature of 3mm-25mm and is not applicable to the detection of R-angle structures of metal die forgings; the R structure is used for measuring the sound field of the curved surface phased array probe in the R angle structure, and meanwhile, the diameter of a flat bottom hole and the depth of an internal defect are limited, so that the ultrasonic detection method is not suitable for ultrasonic detection of a plane straight probe of the R angle structure of a metal die forging.
The invention patent with the publication number of CN 112147233A discloses an ultrasonic detection reference block and an ultrasonic detection reference method for a curved longitudinal butt joint of pressure equipment. The curve surface reference block with the transverse through holes is suitable for ultrasonic detection of welded joints and is not suitable for ultrasonic detection of R-angle structures of die forgings.
Disclosure of Invention
In order to solve the problem that no reference block can be directly used in the prior art for detecting the R angle structure of the metal die forging, the invention provides an ultrasonic detection reference block for the R angle structure.
The ultrasonic detection reference block is rectangular in shape. Wherein: the first side surface and the second side surface of the ultrasonic detection reference block are parallel to each other, and the distance is 80mm, so that the width of the ultrasonic detection reference block is formed; the front surface and the rear surface are parallel to each other and have a distance of 50mm, so that the thickness of the ultrasonic detection reference block is formed; the first and second sides are perpendicular to the rear and front surfaces, respectively. The upper surface of the ultrasonic detection reference block is provided with a second transition surface at the edge adjacent to the first side surface, and a first transition surface 2 is provided at the edge adjacent to the second side surface; the external dimensions of the first transition surface and the second transition surface are 50mm multiplied by 2mm. The first transition surface and the second transition surface are respectively perpendicular to the first side surface, the rear surface, the second side surface and the front surface.
Two flat bottom holes, namely a first flat bottom hole and a second flat bottom hole, are symmetrically distributed on the convex arc surface of the ultrasonic detection reference block, are distributed on two sides of the central line of the ultrasonic detection reference block in the width direction and are positioned on the central line of the ultrasonic detection reference block in the thickness direction; the distance between the center of the bottom surfaces of the two flat bottom holes and the center line of the ultrasonic detection reference block in the width direction is 12.5mm.
The upper surface of each ultrasonic detection reference block is a concave arc surface; the concave arc surface penetrates through the front surface and the rear surface of the ultrasonic detection reference block, and the starting and stopping points of the concave arc surface arc are respectively connected with the second transition surface and the first transition surface. Radius of curvature r of the concave arc surface 1 ＝50mm。
The lower surface of each ultrasonic detection reference block is a convex arc surface; each convex arc surface penetrates through the front surface and the rear surface of the ultrasonic detection reference block, and the starting and stopping points of the convex arc surface arc are respectively connected with the second transition surface and the first transition surface. Radius of curvature r of the convex arc surface 2 ＝r 1 +h+15. And h is the height from the bottoms of the two flat bottom holes to the concave arc surface.
Of two flat bottom holes, the diameter phi of the first flat bottom hole 1 Diameter phi of second flat bottom hole =1.2mm 2 =2 mm, and the distances from the centers of the bottoms of the two flat bottom holes to the central faces of the first side face and the second side face are both 12.5mm, and the distances from the centers of the bottoms of the two flat bottom holes to the rear face are 25mm.
The h from the bottoms of the two flat bottom holes of the 11 ultrasonic detection reference blocks to the concave arc surface is 5mm, 10mm, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm and 100mm respectively, so that the curvature radius r2 of the convex arc surface of the 11 ultrasonic detection reference blocks is 70mm, 75mm, 85mm, 95mm, 105mm, 115mm, 125mm, 135mm, 145mm, 155mm and 165mm respectively in sequence.
The invention is used for sensitivity adjustment and defect equivalent size assessment of ultrasonic detection of the R angle structure of the metal die forging, and can ensure the accuracy of detection results.
According to the invention, the reference block is customized according to the material, the R-angle structure size and the internal quality requirement of the metal die forging, and is directly used for the detection sensitivity adjustment and defect equivalent size assessment of the R-angle structure longitudinal wave detection under the condition of not carrying out curved surface compensation, so that errors existing in curved surface compensation during formula calculation are avoided, and the accuracy of the R-angle structure detection result is further improved. When the comparison test block is customized, the material of the comparison test block is the same as that of the metal die forging, the curvature radius R1 of the concave arc surface of the comparison test block is the same as that of the concave arc surface of the R angle structure of the detected workpiece, the distance h from the bottom surface of the flat bottom hole to the concave arc surface is the same as the machining allowance, and the diameters phi 1 and phi 2 of the flat bottom hole are respectively the same as the single defect and the dense defect acceptance equivalent size specified by the die forging acceptance technical requirement.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a top view of fig. 1.
Fig. 4 is a bottom view of fig. 1.
In the figure: 1. a concave arc surface; 2. a first transition surface; 3. a first side; 4. a convex arc surface; 5. a first flat bottom hole; 6. a second flat bottom hole; 7. a second side; 8. a second transition surface; 9. a rear surface; 10. a front surface.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The present example is an ultrasonic test reference block with an R-angle structure, having 11 blocks. The ultrasonic detection reference block is suitable for detecting the R-angle structure longitudinal wave with the radius of curvature of 50mm and the detection depth of 100mm on a die forging piece; the ultrasonic detection reference block is made of D406A steel, the detection standard is HB 20159-2014A, and the machining allowance is 5mm.
The ultrasonic detection reference block is rectangular in shape. Wherein: the first side surface 3 and the second side surface 7 of the ultrasonic detection reference block are parallel to each other and have a distance of 80mm, so that the width of the ultrasonic detection reference block is formed; the front surface 10 and the rear surface 9 are parallel to each other and have a distance of 50mm, so that the thickness of the ultrasonic detection reference block is formed; the first side 3 and the second side 7 are perpendicular to the rear and front surfaces, respectively.
The upper surface of the ultrasonic detection reference block is provided with a second transition surface 8 at the edge adjacent to the first side surface 3, and a first transition surface 2 at the edge adjacent to the second side surface; the external dimensions of the first transition surface and the second transition surface are 50mm multiplied by 2mm. The first transition surface and the second transition surface are respectively perpendicular to the first side surface, the rear surface, the second side surface and the front surface.
The upper surface is a concave arc surface 1; the concave arc surface penetrates through the front surface 10 and the rear surface 9 of the ultrasonic detection reference block, and the starting and stopping points of the concave arc surface are respectively connected with the second transition surface and the first transition surface. Radius of curvature r of the concave arc surface 1 ＝50mm。
The lower surface of the ultrasonic detection reference block is a convex arc surface 4; the convex arc surface penetrates through the front surface 10 and the rear surface 9 of the ultrasonic detection reference block, and the starting and stopping points of the convex arc surface arc are respectively connected with the second transition surface and the first transition surface. Radius of curvature r of the convex arc surface 2 ＝r 1 +h+15. In this embodiment, in the 11 ultrasonic testing reference blocks, the h from the bottoms of the two flat bottom holes to the concave arc surface is 5mm, 10mm, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm and 100mm, respectively, so that the curvature radii r2 of the convex arc surfaces of the 11 ultrasonic testing reference blocks are 70mm, 75mm, 85mm, 95mm, 105mm, 115mm, 125mm, 135mm, 145mm, 155mm and 165mm, respectively, in order.
Two flat bottom holes, namely a first flat bottom hole 5 and a second flat bottom hole 6, are symmetrically distributed on the convex arc surface 4, are respectively distributed on two sides of the central line of the ultrasonic detection reference block in the width direction and are positioned on the central line of the ultrasonic detection reference block in the thickness direction; comparing the center distance between the bottom surfaces of the two flat bottom holes with the ultrasonic detectionThe distance between the center lines in the block width direction was 12.5mm. Of two flat bottom holes, the diameter phi of the first flat bottom hole 1 Diameter phi of second flat bottom hole =1.2mm 2 =2 mm, and the distances from the centers of the bottoms of the two flat bottom holes to the central faces of the first side face and the second side face are both 12.5mm, and the distances from the centers of the bottoms of the two flat bottom holes to the rear face are 25mm. The distance from the bottoms of the two flat bottom holes to the concave arc surface is h. Of the 11 ultrasonic test reference blocks, h of each ultrasonic test reference block was h=5 mm, 10mm, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, respectively in this order.
And using the ultrasonic detection reference block to detect longitudinal waves of an R-angle structure with the radius of curvature of 50mm and the detection depth of 100mm on a die forging piece.
During detection, the probes are respectively placed on the concave arc surfaces of the test blocks, and the sound beams emitted by the probes are incident perpendicular to the concave arc surfaces. Moving and adjusting the position of the probe and the gain value of the ultrasonic flaw detector to enable the echo of the flat bottom hole with the diameter of 1.2mm to reach 80% of full scale in the height direction of the screen; the gain value at this time is recorded. The probe position was moved so that the height of the flat bottom Kong Hui wave, which had a diameter of 1.2mm, was reduced to 40% of the full scale in the screen height direction, and the probe movement position was recorded. And comparing the gain value and the probe moving distance during the test of each test block, and taking the smallest gain value as the detection sensitivity and the scanning indirection. And when the defect is found in the workpiece detection process, taking a flat bottom hole test block with the same buried depth as the defect for testing, and comparing the gain difference value of the defect and the first flat bottom hole and the second flat bottom hole so as to judge the equivalent size of the defect.
According to the embodiment, under the condition that curvature compensation is not carried out through formula calculation in ultrasonic detection, the R-angle structure ultrasonic detection reference block with the same curvature radius as that of a workpiece is directly used for adjusting detection sensitivity, and the equivalent size of the defect is assessed and fixed, so that errors existing in curved surface compensation during formula calculation are avoided, and the accuracy of the detection result of the R-angle structure is improved.

Claims (6)

1. The ultrasonic detection reference test block with the R-angle structure is characterized in that the ultrasonic detection reference test block is rectangular in shape and has 11 blocks in total; wherein: the first side surface and the second side surface of the ultrasonic detection reference block are parallel to each other, and the distance is 80mm, so that the width of the ultrasonic detection reference block is formed; the front surface and the rear surface are parallel to each other and have a distance of 50mm, so that the thickness of the ultrasonic detection reference block is formed; the first side surface and the second side surface are respectively perpendicular to the rear surface and the front surface; the upper surface of the ultrasonic detection reference block is provided with a second transition surface at the edge adjacent to the first side surface, and a first transition surface 2 is provided at the edge adjacent to the second side surface; the external dimensions of the first transition surface and the second transition surface are 50mm multiplied by 2mm; the first transition surface and the second transition surface are respectively perpendicular to the first side surface, the rear surface, the second side surface and the front surface.
2. The ultrasonic testing reference block with the R-angle structure according to claim 1, wherein two flat bottom holes, namely a first flat bottom hole and a second flat bottom hole, are symmetrically distributed on the convex arc surface, are distributed on two sides of a central line of the ultrasonic testing reference block in the width direction and are positioned on the central line of the ultrasonic testing reference block in the thickness direction; the distance between the center of the bottom surfaces of the two flat bottom holes and the center line of the ultrasonic detection reference block in the width direction is 12.5mm.
3. The ultrasonic detection reference block with the R-angle structure according to claim 1, wherein the upper surface of each ultrasonic detection reference block is a concave arc surface; each concave arc surface penetrates through the front surface and the rear surface of the ultrasonic detection reference block, and the starting and stopping points of the concave arc surface arc are respectively connected with the second transition surface and the first transition surface; radius of curvature r of the concave arc surface 1 ＝50mm。
4. The R-angle ultrasonic test block of claim 1, wherein the lower surface of each ultrasonic test block is a convex arc surface; the convex arc surface penetrates through the front surface and the rear surface of the ultrasonic detection reference block, and the starting and stopping points of the convex arc surface and the second transition surface respectivelyThe first transition surfaces are connected; radius of curvature r of the convex arc surface 2 ＝r 1 +h+15; and h is the height from the bottoms of the two flat bottom holes to the concave arc surface.
5. The ultrasonic test reference block for R-angle structure according to claim 1, wherein the diameter phi of the first flat bottom hole is the same as the diameter phi of the second flat bottom hole 1 Diameter phi of second flat bottom hole =1.2mm 2 =2 mm, and the distances from the centers of the bottoms of the two flat bottom holes to the central faces of the first side face and the second side face are both 12.5mm, and the distances from the centers of the bottoms of the two flat bottom holes to the rear face are 25mm.
6. The ultrasonic testing reference block with the R-angle structure according to claim 3, wherein h from the bottoms of the two flat bottom holes to the concave arc surface of the 11 ultrasonic testing reference blocks is 5mm, 10mm, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm and 100mm respectively, so that the curvature radius R2 of the convex arc surface of the 11 ultrasonic testing reference blocks is 70mm, 75mm, 85mm, 95mm, 105mm, 115mm, 125mm, 135mm, 145mm, 155mm and 165mm respectively.
CN202211553070.0A 2022-12-06 2022-12-06 R angle structure ultrasonic detection reference block Pending CN116223633A (en)

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Application Number Priority Date Filing Date Title
CN202211553070.0A CN116223633A (en) 2022-12-06 2022-12-06 R angle structure ultrasonic detection reference block

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211553070.0A CN116223633A (en) 2022-12-06 2022-12-06 R angle structure ultrasonic detection reference block

Publications (1)

Publication Number Publication Date
CN116223633A true CN116223633A (en) 2023-06-06

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CN202211553070.0A Pending CN116223633A (en) 2022-12-06 2022-12-06 R angle structure ultrasonic detection reference block

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