CN109358116A - Alloy steel bar ultrasonic examination reference block and its application method - Google Patents
Alloy steel bar ultrasonic examination reference block and its application method Download PDFInfo
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- CN109358116A CN109358116A CN201811441431.6A CN201811441431A CN109358116A CN 109358116 A CN109358116 A CN 109358116A CN 201811441431 A CN201811441431 A CN 201811441431A CN 109358116 A CN109358116 A CN 109358116A
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- 229910000851 Alloy steel Inorganic materials 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000007547 defect Effects 0.000 claims abstract description 59
- 238000001514 detection method Methods 0.000 claims abstract description 39
- 239000011159 matrix material Substances 0.000 claims abstract description 22
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 238000012360 testing method Methods 0.000 claims abstract description 7
- 230000035945 sensitivity Effects 0.000 claims description 15
- 238000011156 evaluation Methods 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 12
- 239000010959 steel Substances 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 6
- 230000001815 facial effect Effects 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- 238000005275 alloying Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000013139 quantization Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
Classifications
-
- 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
- G01N29/048—Marking the faulty 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
- G01N29/07—Analysing solids by measuring propagation velocity or propagation time of acoustic waves
-
- 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
Abstract
The present invention provides a kind of alloy steel bar ultrasonic examination reference block and its application method, and it axially includes the identical comparison section of three diameters along cylindric matrix that reference block, which is cylindric matrix, and the peripheral wall for comparing section has a flat part；The peripheral wall of section is compared by forming along its circumferential end to end flat part and arc sections；Flat part is and the axial parallel plane of cylindric matrix；Arc sections are a part of the periphery of the heart coaxial with matrix；Straight facial planes is provided with flat-bottom hole, and the axis of flat-bottom hole is perpendicular to the plane of flat part, and the axis of flat-bottom hole intersects with the axis of matrix.Reference block material is close with bar material to be detected, is closely sized to or identical, and structure is simple, and preparation cost is lower, keeps result of detection more accurate；Defect location is carried out by three comparison sections of setting, keeps defect location more acurrate, substantially increases the yield rate of steel, saved testing cost, be of great significance to the defects detection of bar.
Description
Technical field
The invention belongs to ultrasonic examination technical fields, and in particular to a kind of alloy steel bar ultrasonic examination is with to having a competition
Block and its application method.
Background technique
Ultrasonic examination is the depths that metal material is penetrated using ultrasonic wave, and by a section enter another section when,
The characteristics of interface edge reflects checks a kind of method of part defect, when ultrasonic beam is passed to from piece surface by popping one's head in
Metal inside just occurs back wave when encountering defect and part bottom surface respectively, impulse waveform is formed on fluorescent screen, according to these
Impulse waveform judges defective locations and size.
It is provided according to examination and test of products standard, ultrasonic examination detection must be carried out before steel factory, after carrying out flaw detection is qualified
It can dispatch from the factory.The probe of ultrasonic examination once goes wrong and cannot replace in time, will seriously affect steel flaw detection inspection
The accuracy of survey causes leakage spy accident, and then influences the quality of factory product.
According to the difference of detection mode, the ultrasound examination of steel can be divided into flaw detection manually and two kinds of automatic flaw detection.Hand
Dynamic flaw detection has many advantages, such as the low, using flexible of investment, and steel plant mostly use greatly such mode.But there is also many for flaw detection manually
The shortcomings that can not making up: first, detecting a flaw, the time is long, production efficiency is low；Second, flaw detection operation labor intensity is big, be easy to cause people
The fatigue of member；Third is difficult to ensure that 100% ground of ultrasound beamformer covers the surface of tested steel in operation, thus unavoidably
Cause leakage visit and accidentally visit；4th, because inspection speed is slow, detection is difficult to adapt to the requirement of modernization mass production manually.
Accordingly, it is desirable to provide a kind of for a kind of insufficient alloy steel bar ultrasonic examination comparison of the above-mentioned prior art
Test block and its application method.
Summary of the invention
Present invention aims at overcome the deficiencies of the prior art and provide and a kind of be adapted to alloy steel bar flaw detection
Reference block and its application method keep result of detection more accurate, and defect location is more acurrate, improve the yield rate of steel, save at
This.
To achieve the goals above, the invention provides the following technical scheme:
A kind of alloy steel bar ultrasonic examination reference block, the reference block is cylindric matrix, along the circle
Columnar shape basal axially includes the comparison section that multiple diameters are D, and the peripheral wall of the comparison section has a flat part；The comparison section
Peripheral wall by being formed along its circumferential end to end flat part and arc sections；The flat part is axially parallel with cylindric matrix
Plane；The arc sections are a part of the periphery of the heart coaxial with matrix；The straight facial planes is provided with flat-bottom hole, institute
Plane of the axis perpendicular to the flat part of flat-bottom hole is stated, and the axis of the flat-bottom hole intersects with the axis of described matrix.
A kind of alloy steel bar ultrasonic examination reference block as described above, it is preferable that multiple flat parts are mutual
In parallel, and the arc sections of multiple comparison sections are located at the same side of flat part.
A kind of alloy steel bar ultrasonic examination reference block as described above, it is preferable that multiple flat parts are away from circle
The distance at arc portion arc bottom is incremented by successively, forms flat part step-like.
A kind of alloy steel bar ultrasonic examination reference block as described above, it is preferable that the flat part is along cylindric
The length of matrix axial direction is identical.
A kind of alloy steel bar ultrasonic examination reference block as described above, it is preferable that between each flat part is equal
Every the different flat-bottom hole of multiple diameters is distributed with, the depth of the flat-bottom hole is identical.
A kind of alloy steel bar ultrasonic examination reference block as described above, it is preferable that each flat part wraps
Include the flat-bottom hole that three diameters are respectively 1mm, 2mm, 3mm.
A kind of alloy steel bar ultrasonic examination reference block as described above, it is preferable that the depth of the flat-bottom hole is
4mm, the spacing of the two neighboring flat-bottom hole are 50mm.
A kind of alloy steel bar ultrasonic examination reference block as described above, it is preferable that the reference block includes three
A comparison section, respectively A compare section, B comparison section and C and compare section；The A comparison section, B comparison section and C comparison section respectively include
Flat part A, flat part B and flat part C；The flat part A, flat part B and flat part C are successively passed away from the distance at arc sections arc bottom
Increase；The flat part A is provided with the A that diameter is respectively 1mm, 2mm, 3mm1Flat-bottom hole, A2Flat-bottom hole and A3Flat-bottom hole is described flat
Straight portion B is provided with the B that diameter is respectively 1mm, 2mm, 3mm1Flat-bottom hole, B2Flat-bottom hole and B3Flat-bottom hole, the flat part C setting
Having diameter is respectively the C of 1mm, 2mm, 3mm1Flat-bottom hole, C2Flat-bottom hole and C3Flat-bottom hole.
A kind of alloy steel bar ultrasonic examination reference block as described above, it is preferable that the A1Flat-bottom hole, A2It is flat
Hole and A3The distance L at the distance from bottom arc sections arc bottom of flat-bottom hole1For 0.25D, the B1Flat-bottom hole, B2Flat-bottom hole and B3Flat-bottom hole
Distance from bottom arc sections arc bottom distance L2For 0.5D, the C1Flat-bottom hole, C2Flat-bottom hole and C3The distance from bottom circle of flat-bottom hole
The distance L at arc portion arc bottom3For 0.75D.
The application method of described in any item alloy steel bar ultrasonic examination reference blocks as above, it is preferable that described to make
Included the following steps: with method
S1 chooses reference block:
Choose the reference block being adapted with diameter of rod to be detected, and the diameter D of reference block and bar to be detected
Diameter tolerance is within ± 10mm；
S2 adjusts flaw detection sensitivity:
Straight beam method head is coupled on the periphery of reference block, the flat pore size conduct of some size is chosen
Flaw detection sensitivity adjusts the parameter of supersonic detector to measuring state；
S3 carries out the evaluation of ultrasonic flaw detection equivalent:
Straight beam method head is coupled on the periphery of bar to be measured, detects the presence of defect, such as generates defect sound path, it will
Defect sound path is compared with the emitter sound path in reference block, to obtain the equivalent diameter and depth of defect of this defect.
Compared with the immediate prior art, technical solution provided by the invention has following excellent effect:
Alloy steel bar ultrasonic examination reference block provided by the invention, using with similar in bar material to be detected
Three step-like comparison sections are made in material, and structure is simple, and preparation cost is lower, reference block size and bar size to be detected
It is close or identical, keep result of detection more accurate；Defect location is carried out by three comparison sections of setting, keeps defect location more quasi-
Really, the yield rate for substantially increasing steel, has saved testing cost, is of great significance to the defects detection of bar.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.
Wherein:
Fig. 1 is the alloy steel bar ultrasonic examination reference block structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the alloy steel bar ultrasonic examination reference block axial sectional view of the embodiment of the present invention.
In figure: 1, A compares section；11,A1Flat-bottom hole；12,A2Flat-bottom hole；13,A3Flat-bottom hole；2, B compares section；21,B1It is flat
Hole；22,B2Flat-bottom hole；23,B3Flat-bottom hole；3, C compares section；31,C1Flat-bottom hole；32,C2Flat-bottom hole；33,C3Flat-bottom hole.
Specific embodiment
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.It should be noted that in the feelings not conflicted
Under condition, the features in the embodiments and the embodiments of the present application be can be combined with each other.
It as depicted in figs. 1 and 2, is the alloy steel bar ultrasonic examination reference block of the embodiment of the present invention, the comparison
Test block is cylindric matrix, axially includes A comparison section 1, B comparison section 2 and the C comparison that three diameters are D along cylindric matrix
Section 3, A comparison section 1, B comparison section 2 and C comparison section 3 are identical along the length of matrix axial direction.The peripheral wall for comparing section has a flat part；
The peripheral wall of section is compared by forming along its circumferential end to end flat part and arc sections；Flat part is axially flat with cylindric matrix
Capable plane；Arc sections are a part of the periphery of the heart coaxial with matrix；Straight facial planes is provided with flat-bottom hole, flat-bottom hole
Axis is perpendicular to the plane of flat part, and the axis of flat-bottom hole intersects with the axis of matrix.Three flat parts are parallel to each other, and three
The arc sections of a comparison section are located at the same side of flat part.A comparison section 1, B comparison section 2 and C comparison section 3 respectively include flat part
A, flat part B and flat part C；The distance of flat part A, flat part B and flat part C away from arc sections arc bottom is incremented by successively, forms platform
Scalariform.
There are three the A that diameter is respectively 1mm, 2mm, 3mm for flat part A distribution1Flat-bottom hole 11, A2Flat-bottom hole 12 and A3It is flat
Hole 13, there are three the B that diameter is respectively 1mm, 2mm, 3mm for flat part B distribution1Flat-bottom hole 21, B2Flat-bottom hole 22 and B3Flat-bottom hole
There are three the C that diameter is respectively 1mm, 2mm, 3mm for 23, flat part C distribution1Flat-bottom hole 31, C2Flat-bottom hole 32 and C3Flat-bottom hole 33,
The depth of all flat-bottom holes is 4mm, and the spacing of two neighboring flat-bottom hole is 50mm；A1Flat-bottom hole 11, A2Flat-bottom hole 12 and A3It is flat
The distance L at the distance from bottom arc sections arc bottom of bottom outlet 131For 0.25D；B1Flat-bottom hole 21, B2Flat-bottom hole 22 and B3Flat-bottom hole 23
The distance L at distance from bottom arc sections arc bottom2For 0.5D；C1Flat-bottom hole 31, C2Flat-bottom hole 32 and C3The distance from bottom circle of flat-bottom hole 33
The distance L at arc portion arc bottom3For 0.75D.
The embodiment of the present invention also provides the application method of alloy steel bar ultrasonic examination reference block, including as follows
Step:
S1 chooses reference block:
Choose the reference block being adapted with diameter of rod to be detected, and the diameter D of reference block and bar to be detected
Diameter tolerance is within ± 10mm；
S2 adjusts flaw detection sensitivity:
Straight beam method head is coupled on the periphery of reference block, the maximum for finding out the flat-bottom hole of C comparison section 3 is returned
Then wave, adjustment echo amplitude to full-scale 80% find out the maximum echo of the flat-bottom hole of the correspondingly-sized of A comparison section 1,
Defect maximum echo is not less than full-scale 80%, using the size of the flat-bottom hole as flaw detection sensitivity；
S3 carries out the evaluation of ultrasonic flaw detection equivalent:
Straight beam method head is coupled on the periphery of bar to be measured, detects the presence of defect, such as generates defect sound path, then
The defect sound path is compared with the emitter sound path in reference block, selects hair identical with defect sound path in reference block
Equivalent diameter of the diameter of the flat-bottom hole of beam sound path as the defect；Emitter sound path on defect sound path and reference block
When different；If the emitter sound path and defect sound path in existing reference block be not identical, insertion comparative selection section is used,
The emitter sound path of comparison section i.e. for comparing should be not less than and closest to defect sound path；When defect sound path is less than 0.25D,
The flat pore size of the defect and the correspondingly-sized of A comparison section 1 is compared, to obtain the equivalent diameter and defect of this defect
Depth；When defect sound path is located at 0.25D~0.5D, the flat pore size of the defect and the correspondingly-sized of B comparison section 2 is done into ratio
Compared with to obtain the equivalent diameter and depth of defect of this defect；When defect sound path is located at 0.5D~0.75D, by the defect and C pairs
Flat pore size than the correspondingly-sized of section 3 compares, to obtain the equivalent diameter and depth of defect of this defect.
Embodiment 1
The present embodiment bar grade of steel to be checked be 40Cr, specification be Φ 60mm, reference block alloying component it is close with 40Cr or
Similar, flaw detection sensitivity is Φ 3mm.
S1 chooses reference block:
The diameter D of reference block is 60mm, L3For 45mm, L2For 30mm, L1For 15mm.Its flat-bottom hole drills aperture standard
Really, and axially bored line is overlapped with diameter of rod line and flat hole face is perpendicular to the axis, cleans in hole.
S2 adjusts flaw detection sensitivity:
Straight beam method head is coupled on the periphery of reference block, the C of C comparison section 3 is found out3The maximum of flat-bottom hole 33
Then echo, adjustment echo amplitude to full-scale 80% find out the A of comparison section A13The maximum echo of flat-bottom hole 13, maximum are returned
Wave is not less than full-scale 80%, using the size of the flat-bottom hole as flaw detection sensitivity；
S3 carries out the evaluation of ultrasonic flaw detection equivalent:
Straight beam method head is coupled on the periphery of bar to be measured, detects that depth of defect is located at 15mm~30mm,
Gain knob is adjusted, so that wave amplitude is reached the 75% of wave amplitude all over the screen, gain adjustment increases 3.5dB at this time, at this time by the defect and B
Compare the B of the correspondingly-sized of section 23Flat-bottom hole 23 compares, to show that this Defect Equivalent is the Φ 3mm buried in 30mm depth
The individual defect of equivalent defect+3.5dB, is described as, and a defect, size quantization are as follows: diameter 3mm+ are found at 30mm
3.5dB, back wave here are identical.
Embodiment 2
It is 35CrMo that the present embodiment, which is detected bar grade of steel, and specification is Φ 100mm, reference block alloying component and 35CrMo phase
Close or similar, flaw detection sensitivity is Φ 2mm.
S1 chooses reference block:
The diameter D of reference block is 100mm, L3For 75mm, L2For 50mm, L1For 25mm.Its flat-bottom hole drills aperture standard
Really, and axially bored line is overlapped with diameter of rod line and flat hole face is perpendicular to the axis, cleans in hole.
S2 adjusts flaw detection sensitivity:
Straight beam method head is coupled on the periphery of reference block, the C of C comparison section 3 is found out2The maximum of flat-bottom hole 32
Then echo, adjustment echo amplitude to full-scale 80% find out the A of A comparison section 12The maximum echo of flat-bottom hole 12, maximum are returned
Wave is not less than full-scale 80%, using the size of the flat-bottom hole as flaw detection sensitivity；
S3 carries out the evaluation of ultrasonic flaw detection equivalent:
Straight beam method head is coupled on the periphery of bar to be measured, detects that depth of defect is located within 25mm, adjusted
Gain knob is saved, wave amplitude is made to reach the 75% of wave amplitude all over the screen, gain adjustment increases 1.5dB at this time, and the defect and A are compared section
The A of 1 correspondingly-sized2Flat-bottom hole 12 compares, thus obtain this Defect Equivalent be bury in 25mm depth Φ 2mm equivalent lack
The individual defect for falling into+1.5dB, is described as, and a defect, size quantization are found at 25mm are as follows: diameter 2mm+1.5dB, herein
The back wave at place is identical.
Embodiment 3
The present embodiment be detected bar grade of steel be 12Cr1MoV, specification be Φ 130mm, reference block alloying component with
12Cr1MoV is close or similar, and flaw detection sensitivity is Φ 1mm
S1 chooses reference block:
Reference block specification D is 128mm, L3For 96mm, L2For 64mm, L1For 32mm.Its flat-bottom hole drills aperture standard
Really, and axially bored line is overlapped with diameter of rod line and flat hole face is perpendicular to the axis, cleans in hole.
S2 adjusts flaw detection sensitivity:
Straight beam method head is coupled on the periphery of reference block, the C of C comparison section 3 is found out1The maximum of flat-bottom hole is returned
Then wave, adjustment echo amplitude to full-scale 80% find out the A of A comparison section 11The maximum echo of flat-bottom hole 11, maximum echo
Not less than full-scale 80%, using the size of the flat-bottom hole as flaw detection sensitivity；
S3 carries out the evaluation of ultrasonic flaw detection equivalent:
Straight beam method head is coupled on the periphery of bar to be measured, detects that depth of defect is located at 64mm~96mm model
In enclosing, by the C of the defect and the correspondingly-sized of C comparison section 31Flat-bottom hole 31 compares, and adjusts gain knob, and wave amplitude is made to reach full
Shield the 75% of wave amplitude, gain adjustment reduces 1.5dB at this time, to show that this Defect Equivalent is to bury in the Φ of 96mm depth
The individual defect of 1mm equivalent defect -1.5dB, is described as, and a defect, size quantization are as follows: diameter are found at 96mm
1mm-1.5dB back wave here is identical.
In conclusion alloy steel bar ultrasonic examination reference block provided by the invention, using with bar to be detected
Three step-like comparison sections are made in material similar in material, and structure is simple, and preparation cost is lower, reference block size with it is to be checked
It is close or identical to survey bar size, keeps result of detection more accurate；Defect location is carried out by three comparison sections of setting, makes to lack
It is more acurrate to fall into positioning, substantially increases the yield rate of steel, has saved testing cost, there is important meaning to the defects detection of bar
Justice.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of alloy steel bar ultrasonic examination reference block, which is characterized in that the reference block is cylindric matrix,
It axially include the comparison section that multiple diameters are D along the cylindric matrix, the peripheral wall of the comparison section has a flat part；Institute
The peripheral wall of comparison section is stated by forming along its circumferential end to end flat part and arc sections；The flat part be and cylindric matrix
Axial parallel plane；The arc sections are a part of the periphery of the heart coaxial with matrix；The plane of the flat part is arranged
There is a flat-bottom hole, the plane of the axis of the flat-bottom hole perpendicular to the flat part, and the axis and described matrix of the flat-bottom hole
Axis intersection.
2. a kind of alloy steel bar ultrasonic examination reference block as described in claim 1, which is characterized in that multiple described
Flat part is parallel to each other, and the arc sections of multiple comparison sections are located at the same side of flat part.
3. a kind of alloy steel bar ultrasonic examination reference block as claimed in claim 2, which is characterized in that multiple described
Distance of the flat part away from arc sections arc bottom is incremented by successively, forms flat part step-like.
4. a kind of alloy steel bar ultrasonic examination reference block as described in claim 1, which is characterized in that described straight
Portion is identical along the length of cylindric matrix axial direction.
5. a kind of alloy steel bar ultrasonic examination reference block as described in claim 1, which is characterized in that each described
Flat part is intervally distributed with the different flat-bottom hole of multiple diameters, and the depth of the flat-bottom hole is identical.
6. a kind of alloy steel bar ultrasonic examination reference block as claimed in claim 5, which is characterized in that each described
Flat part includes the flat-bottom hole that three diameters are respectively 1mm, 2mm, 3mm.
7. a kind of alloy steel bar ultrasonic examination reference block as claimed in claim 6, which is characterized in that described flat
The depth in hole is 4mm, and the spacing of the two neighboring flat-bottom hole is 50mm.
8. a kind of alloy steel bar ultrasonic examination reference block as claimed in claim 7, which is characterized in that the comparison
Test block includes three comparison sections, and respectively A compares section, B comparison section and C and compares section；The A comparison section, B comparison section and C comparison
Section respectively includes flat part A, flat part B and flat part C；The flat part A, flat part B and flat part C are away from arc sections arc bottom
Apart from incremented by successively；The flat part A is provided with the A that diameter is respectively 1mm, 2mm, 3mm1Flat-bottom hole, A2Flat-bottom hole and A3It is flat
Hole, the flat part B are provided with the B that diameter is respectively 1mm, 2mm, 3mm1Flat-bottom hole, B2Flat-bottom hole and B3Flat-bottom hole is described flat
Straight portion C is provided with the C that diameter is respectively 1mm, 2mm, 3mm1Flat-bottom hole, C2Flat-bottom hole and C3Flat-bottom hole.
9. a kind of alloy steel bar ultrasonic examination reference block as claimed in claim 8, which is characterized in that the A1It is flat
Bottom outlet, A2Flat-bottom hole and A3The distance L at the distance from bottom arc sections arc bottom of flat-bottom hole1For 0.25D, the B1Flat-bottom hole, B2It is flat
Hole and B3The distance L at the distance from bottom arc sections arc bottom of flat-bottom hole2For 0.5D, the C1Flat-bottom hole, C2Flat-bottom hole and C3Flat-bottom hole
Distance from bottom arc sections arc bottom distance L3For 0.75D.
10. a kind of user of alloy steel bar ultrasonic examination reference block as described in any one of claims 1 to 9
Method, which is characterized in that the application method includes the following steps:
S1 chooses reference block:
Choose the reference block being adapted with diameter of rod to be detected, and the diameter of the diameter D of reference block and bar to be detected
Tolerance is within ± 10mm；
S2 adjusts flaw detection sensitivity:
Straight beam method head is coupled on the periphery of reference block, chooses the flat pore size of some size as flaw detection
Sensitivity adjusts the parameter of supersonic detector to measuring state；
S3 carries out the evaluation of ultrasonic flaw detection equivalent:
Straight beam method head is coupled on the periphery of bar to be measured, detects the presence of defect, defect sound path is such as generated, by defect
Sound path is compared with the emitter sound path in reference block, to obtain the equivalent diameter and depth of defect of this defect.
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| CN201811441431.6A CN109358116A (en) | 2018-11-29 | 2018-11-29 | Alloy steel bar ultrasonic examination reference block and its application method |
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| CN201811441431.6A CN109358116A (en) | 2018-11-29 | 2018-11-29 | Alloy steel bar ultrasonic examination reference block and its application method |
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