CN202548104U - Reference test block for oblique detection of grooves of curved surface forged piece in peripheral direction through small-angle longitudinal wave probe - Google Patents
Reference test block for oblique detection of grooves of curved surface forged piece in peripheral direction through small-angle longitudinal wave probe Download PDFInfo
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- CN202548104U CN202548104U CN2012201355534U CN201220135553U CN202548104U CN 202548104 U CN202548104 U CN 202548104U CN 2012201355534 U CN2012201355534 U CN 2012201355534U CN 201220135553 U CN201220135553 U CN 201220135553U CN 202548104 U CN202548104 U CN 202548104U
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- longitudinal wave
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- test block
- wave probe
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Abstract
The utility model discloses a reference test block for oblique detection of grooves of a curved surface forged piece in the peripheral direction through a small-angle longitudinal wave probe. The reference test block is shaped like a cylinder, the ratio of the inner diameter to the outer diameter is 0.23+/-0.01 to 0.45+/-0.01, at least one artificial flaw is arranged on the surface on the inner wall of the reference test block, the artificial flaws are of rectangular grooves or V-shaped grooves, and the rectangular grooves and the V-shaped grooves are arranged along the peripheral direction of the reference test block and parallel to the axial line of the reference test block. The reference test block disclosed by the utility model overcomes the problem that the cylindrical forged piece can not perform longitudinal wave oblique incident debugging calibration and further cause difficulty, and greatly improves the level of ultrasonic wave oblique incident detection.
Description
Technical field
The utility model relates to a kind of small angle longitudinal wave probe and circumferentially tiltedly surveys the reference block of curved surface forging groove, and the ratio that is applied to external diameter and internal diameter is more than or equal to the small angle longitudinal wave flaw detection of 2 cylindrical forged piece.
Background technology
The effect of ultrasound examination test block: confirm detection sensitivity, the performance of testing tool and probe, the adjustment sweep velocity is passed judgment on defect size.
The ratio of outer internal diameter is less than hollow (or tubular) forging of 2 to 1; The method of detection of adopting in the world mainly is pure shear wave oblique incidence detection means; But more than or equal to 2 to 1 forging, just do not have the detection method of oblique incidence for the ratio of outer internal diameter, cause a large amount of radially defective omissions.As everyone knows; Restrictive condition to tubular, annular and the pure detection with transversal waves of tubing is to guarantee that the acoustic axis line of refracted shear can reach internal face; So have the wall thickness t and the ratio of D outer diameter to be: t/D≤0.5 [1-(CS/CL)]; CS and CL are respectively shear wave velocity and the velocity of longitudinal wave in the seized workpiece in the formula, have for the steel workpiece is approximate: t/D≤0.3, the form that also can change inner diameter d and the ratio of D outer diameter into is: d/D>=0.6.Requirement by this standard; Obviously big limitations on annular and cylindrical forged piece the scope of using ultrasound wave inspection; Do not give full play to the potentiality and the advantage of carrying out flaw detection, we adopt the small angle longitudinal wave probe, can more effectively find the harmfulness defective of radial direction.
Therefore, need a kind of new reference block circumferentially tiltedly to survey the requirement of curved surface forging to satisfy the small angle longitudinal wave probe.
The utility model content
Goal of the invention: the object of the invention just provides a kind of small angle longitudinal wave probe and circumferentially tiltedly surveys the reference block of curved surface forging groove, with the ratio that remedies external diameter and the internal diameter deficiency more than or equal to 2 cylindrical forged piece UT (Ultrasonic Testing)s.
Technical scheme: for realizing the foregoing invention purpose, the reference block of the utility model can be adopted following technical scheme:
A kind of small angle longitudinal wave probe is circumferentially tiltedly surveyed the reference block of curved surface forging groove; It is characterized in that; Said reference block is a cylindrical shape, and the internal diameter of said reference block is 0.23 ± 0.01-0.45 ± 0.01 with the ratio of external diameter, has at least one people's industrial injury on the inner wall surface of said reference block; Said people's industrial injury is rectangular channel or V-shaped groove, and said rectangular channel and V-shaped groove are along the circumferential setting of reference block and be parallel to the axis of reference block.
Technique effect: compared with prior art; The small angle longitudinal wave probe of the utility model is circumferentially tiltedly surveyed the invention of curved surface forging groove reference block; Having overcome cylindrical forged piece can't the compressional wave oblique incidence debug the difficulty of demarcating, and has improved the level that the ultrasound wave oblique incidence detects greatly.
Preferably, the internal diameter of said reference block is 0.23 ± 0.01 or 0.38 ± 0.01 with the ratio of external diameter.The incident angle of the small angle longitudinal wave probe that this two covers reference block is corresponding is respectively 6 degree and 10 degree; Utilize this two covers test block to make the DAC curve; The sound deflection angle distribution of sampled point is even, and the ratio that more helps external diameter and internal diameter is more than or equal to the small angle longitudinal wave flaw detection of 2 cylindrical forged piece.
Preferably; The depth of cut of said rectangular channel and said V-shaped groove be the reference block wall thickness 3% or 6.4mm in the smaller; The width of said rectangular channel and V-shaped groove is 3.2mm smaller or equal to the twice of depth of cut and the breadth extreme of said rectangular channel and V-shaped groove, and the length of said rectangular channel and V-shaped groove is 25.4mm ± 0.38mm.The axial length of said reference block is 50mm.Said people's industrial injury is positioned at the middle part of said reference block axial length.
Preferably, have on the outer wall surface of said reference block and the corresponding people's industrial injury of people's industrial injury of inner wall surface, wherein people's industrial injury of outer wall surface is identical with the artificial impairment of the constitution shape of inner wall surface.The inside and outside wall surface all has people's industrial injury, and the arc length positions of popping one's head in the time of can confirming UT (Ultrasonic Testing) with the artificial wound of outer wall is simple and convenient.Can carry out the UT (Ultrasonic Testing) demarcation according to the inner wall surface people's industrial injury and the outer wall surface people industrial injury of reference block simultaneously.
Description of drawings
Fig. 1 is the front view that the utility model small angle longitudinal wave probe is circumferentially tiltedly surveyed the reference block of curved surface forging groove.
Fig. 2 be the utility model small angle longitudinal wave probe A-A that circumferentially tiltedly surveys the reference block of curved surface forging groove to diagrammatic cross-section.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment; Further illustrate the utility model; Should understand these embodiment only be used to the utility model is described and be not used in the restriction the utility model scope; After having read the utility model, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the utility model.
As shown in Figure 1; The small angle longitudinal wave probe of the utility model is circumferentially tiltedly surveyed the reference block of curved surface forging groove, and reference block is a cylindrical shape, and internal diameter is 0.23 ± 0.01-0.45 ± 0.01 with the ratio of external diameter; Preferably, the internal diameter of reference block is 0.23 ± 0.01 or 0.38 ± 0.01 with the ratio of external diameter.Have at least one people's industrial injury on the inner wall surface of reference block, people's industrial injury is for for rectangular channel or V-shaped groove, and said rectangular channel and V-shaped groove are along the circumferential setting of reference block and be parallel to the axis of reference block.Preferably, the opening angle of V-shaped groove is 60 °.The depth of cut of rectangular channel and V-shaped groove be the reference block wall thickness 3% or 6.4mm in the smaller.Width is 3.2mm to the maximum smaller or equal to the twice of depth of cut, and length is about 25.4mm ± 0.38mm.The axial length of reference block is 50mm.Have on the outer wall surface of reference block and the corresponding people's industrial injury of people's industrial injury of inner wall surface, wherein people's industrial injury of outer wall surface is identical with the size shape of people's industrial injury of inner wall surface.The inside and outside wall surface all has people's industrial injury, and the arc length positions of popping one's head in the time of can confirming UT (Ultrasonic Testing) with the artificial wound of outer wall is simple and convenient.
Specific embodiment is made in reference block:
Test block is divided into incident angle 6 degree compressional wave reference blocks and incident angle 10 degree compressional wave reference blocks two covers, and every type of breach is V-arrangement and rectangular channel.Rectangle or 60 degree " V " shape grooves from internal diameter can obtain about 80% full frame high indication amplitude.Breach should be on axial direction and is parallel to the axis of forging.The depth of cut of internal diameter breach should be 3% or 6.4 mm of nominal thickness, get wherein smaller, and its length is about 25.4 mm.The breach breadth extreme should be the twice (maximum 3.2mm) of the degree of depth.Grooving must with the detection side to becoming 90 °.Groove depth tolerance+0.013 mm.Roughness Ra≤6.3um at the surfaces externally and internally of forging, processes parallel V-arrangement and rectangular channel respectively as standard trench vertically.Test block is divided and is seen the following form, and each eight, totally 16.
Parameter is made in the reference block of incident angle 6 degree (small angle longitudinal wave probe)
Parameter is made in the reference block of incident angle 10 degree (small angle longitudinal wave probe)
Remarks: test block type:
8630 represent the exemplary alloy label; R=rectangle grooving, V=60 ° of V-arrangement grooving
118=11.8 ", metallic radius, unit 00.0 "; RR=circumferentially tiltedly surveys
Front three: 456=external radius 456mm; Three of backs: 123=inside radius 123mm
The reference block material: the reference block technical indicator need meet GB/T 11259 and ASTM E428 standard-required.
As stated, the circumferentially oblique invention of surveying the reference block of curved surface forging groove of the small angle longitudinal wave of the utility model probe has remedied cylindrical forged piece and can't the compressional wave oblique incidence debug the difficulty of demarcating, and has improved the level that the ultrasound wave oblique incidence detects greatly.
Claims (6)
1. a small angle longitudinal wave probe is circumferentially tiltedly surveyed the reference block of curved surface forging groove; It is characterized in that; Said reference block is a cylindrical shape, and the internal diameter of said reference block is 0.23 ± 0.01-0.45 ± 0.01 with the ratio of external diameter, has at least one people's industrial injury on the inner wall surface of said reference block; Said people's industrial injury is rectangular channel or V-shaped groove, and said rectangular channel and V-shaped groove are along the circumferential setting of reference block and be parallel to the axis of reference block.
2. small angle longitudinal wave probe as claimed in claim 1 is circumferentially tiltedly surveyed the reference block of curved surface forging groove, it is characterized in that the V-shaped groove of said reference block is 60 ° of V-shaped grooves.
3. small angle longitudinal wave probe as claimed in claim 1 is circumferentially tiltedly surveyed the reference block of curved surface forging groove, it is characterized in that the internal diameter of said reference block is 0.23 ± 0.01 or 0.38 ± 0.01 with the ratio of external diameter.
4. small angle longitudinal wave probe as claimed in claim 1 is circumferentially tiltedly surveyed the reference block of curved surface forging groove; It is characterized in that; The depth of cut of said rectangular channel and said V-shaped groove be the reference block wall thickness 3% or 6.4mm in the smaller; The tolerance of said depth of cut is ± 0.03mm, and the width of said rectangular channel and V-shaped groove is 3.2mm smaller or equal to the twice of depth of cut and the breadth extreme of said rectangular channel and V-shaped groove, and the length of said rectangular channel and V-shaped groove is 25.4mm ± 0.38mm.
5. small angle longitudinal wave probe as claimed in claim 1 is circumferentially tiltedly surveyed the reference block of curved surface forging groove, it is characterized in that the axial length of said reference block is 50mm, and said people's industrial injury is positioned at the middle part of said reference block axial length.
6. small angle longitudinal wave probe as claimed in claim 1 is circumferentially tiltedly surveyed the reference block of curved surface forging groove; It is characterized in that; Have on the outer wall surface of said reference block and the corresponding people's industrial injury of people's industrial injury of inner wall surface, wherein people's industrial injury of outer wall surface is identical with the artificial impairment of the constitution shape of inner wall surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201355534U CN202548104U (en) | 2012-04-01 | 2012-04-01 | Reference test block for oblique detection of grooves of curved surface forged piece in peripheral direction through small-angle longitudinal wave probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201355534U CN202548104U (en) | 2012-04-01 | 2012-04-01 | Reference test block for oblique detection of grooves of curved surface forged piece in peripheral direction through small-angle longitudinal wave probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202548104U true CN202548104U (en) | 2012-11-21 |
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ID=47168721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201355534U Expired - Fee Related CN202548104U (en) | 2012-04-01 | 2012-04-01 | Reference test block for oblique detection of grooves of curved surface forged piece in peripheral direction through small-angle longitudinal wave probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202548104U (en) |
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2012
- 2012-04-01 CN CN2012201355534U patent/CN202548104U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20210401 |