CN204989115U - Test block of T type welding seam - Google Patents
Test block of T type welding seam Download PDFInfo
- Publication number
- CN204989115U CN204989115U CN201520780061.4U CN201520780061U CN204989115U CN 204989115 U CN204989115 U CN 204989115U CN 201520780061 U CN201520780061 U CN 201520780061U CN 204989115 U CN204989115 U CN 204989115U
- Authority
- CN
- China
- Prior art keywords
- welding
- test block
- defect
- welding seam
- web
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000003466 welding Methods 0.000 title claims abstract description 45
- 238000012360 testing method Methods 0.000 title claims abstract description 23
- 230000007547 defect Effects 0.000 claims abstract description 57
- 239000011324 bead Substances 0.000 claims abstract description 22
- 239000011148 porous material Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 abstract description 11
- 238000001514 detection method Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 239000000523 sample Substances 0.000 abstract description 3
- 230000004927 fusion Effects 0.000 description 12
- 239000002893 slag Substances 0.000 description 12
- 208000037656 Respiratory Sounds Diseases 0.000 description 10
- 230000035515 penetration Effects 0.000 description 8
- 238000004088 simulation Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model relates to an engineering construction technical field is a test block of T type welding seam who is arranged in simulating the various defects of welding process particularly, including pterygoid lamina and web, the pterygoid lamina is 90 with the web contained angle, and pterygoid lamina and web welding form welding seam and welding bead, and a plurality of long cross bores set up respectively in the welding seam both ends, and the aperture is different with the bore depth, and first kind of cell type defect structure direction is on a parallel with the welding bead, and sets up in the middle of the welding seam welding bead, second kind cell type defect structure direction perpendicular to welding bead, and set up in welding seam welding bead middle part, the pterygoid lamina both wings are equipped with the flat hole of the different degree of depth. The utility model discloses test block of T type welding seam has designed the peaceful bottom outlet of two kinds of cell type defects, long cross bore in the welding seam, simulate volume type defect, plane defect and mother metal layering respectively, has verified ultrasonic phased array's detection effect, and is convenient to probe position and moving direction's assurance in the detection.
Description
[technical field]
The utility model relates to Construction Technology field, specifically a kind of T-shaped welded joint test block for simulating various defect in welding process.
[background technology]
Welding is that two or more of the same race or foreign material is by the combination between atom or molecule with spread the technological process linked into an integrated entity, welding joint is called with the joint that the method for welding connects, it is made up of weld seam, fusion area, heat-affected zone and contiguous mother metal thereof, in order to ensure that weld seam two parts mother metal can merge completely after welding, before welding, should output suitable groove in joint, this is one of essential condition ensureing weldquality.If square groove just directly welds, just likely cause the weld defect that lack of penetration, incomplete fusion etc. is serious, bury certain potential safety hazard to construction quality.Press the section form of weld seam own different, weld seam is divided into butt-weld and fillet weld.Butt-weld is between the groove face of weldment or the weld seam that welds between the groove face of a weldment with another weldment end face; The weld seam welded along the intersection of two orthogonals or nearly orthogonal part is fillet weld.
T-shaped weld seam, i.e. T-shaped corner connection weld seam, play vital effect in many great engineerings.The Common Welding Defects of T-shaped weld seam has: crackle, lack of penetration, incomplete fusion, pore and slag inclusion etc., grasps the feature of these defects, is the prerequisite carrying out detecting test block conceptual design.
(1) crackle: crackle is a kind of defect that in weld seam, harmfulness is maximum, belongs to planar defect.It to T connector at normal temperatures tensile strength have a great impact, this impact can increase along with the increase of crackle area, and crack tip will cause stress to concentrate, cause T connector to expand destruction under low stress, crackle may produce at face of weld, forms surface crack, also may produce in weld seam or heat-affected zone, form embed crack, in general, surface crack is larger than the harmfulness of embed crack.Can be divided into longitudinal crack and transverse crack again according to the direction of crackle, longitudinal crack and Weld pipe mill line parallel, transverse crack is vertical with axis of a weld.The length of crackle is different in size, but general all thinner.Research shows, the most easily occurs crackle at welding toe.
(2) lack of penetration: lack of penetration is the phenomenon of welding joint root complete penetration, and it belongs to planar defect, reduces the physical strength of weld seam, under effect of stress, easily extends to crackle, causes T connector to destroy.If successional lack of penetration, a kind of defect of murther especially.Lack of penetration main generation is in the edge of the root of groove and the root face of groove.
(3) incomplete fusion: incomplete fusion is in fact a kind of rosin joint, belongs to planar defect, makes the net sectional area of weld seam reduce, under the effect of alternate load, stress will high concentration, and the physical strength of T connector is reduced, plasticity reduces, and makes weld cracking.During welding, between welding bead and welding bead, between welding bead and mother metal, it is integral to fail complete melted join.According to the position of incomplete fusion, can be divided into: groove incomplete fusion, lack of inter-run fusion and root incomplete fusion.
(4) pore: pore belongs to the defect of volume type, it reduces the long-pending main cause of section of weld joint.That reduce the mechanical property of weld seam, the toughness of particularly impacting and bending, and the compactness also destroying weld metal.Continuous pore can make the plasticity of weld seam reduce by 40% ~ 50%, is the major reason causing T connector to destroy.Under alternate load, the decrease of fatigue strength of weld seam is very fast.But pore does not have sharp-pointed edge, therefore do not belong to dangerous type defect, existence limited in some cases allows, and testing staff needs to evaluate according to related standards.Bubble when pore mainly welds in molten bath to fail effusion when solidifying, and left behind formation, and therefore, pore may appear at any position of weld seam.
(5) slag inclusion: the ascent rate of slag when slag inclusion is welding in molten bath is less than in molten bath the setting rate of melting metal, during metal freezing, slag fails emersion molten bath and form slag inclusion.It belongs to the defect of volume type, and its extent of injury is less than planar defect.With the slag inclusion of sharp edges, harmfulness is larger.The existence of slag inclusion makes weld seam useful area reduce, and reduces the physical strength of weld seam, toughness, plasticity and corrosion resistant ability.When having the effect of alternate load, easily cause brittle fracture to expand, reduce fatigue limit, slag inclusion may be distributed in any position in weld seam.
Above 5 kinds of defects are the common deficiency of T-shaped weld seam, grasp their producing cause, resemblance, the position the most easily occurred, the extent of injury and evaluation criterion etc., have meaning important very greatly to the design detecting test block scheme.
[utility model content]
The utility model is for the special construction of T-shaped weld seam and the common crackle of T-shaped weld seam, lack of penetration, incomplete fusion, pore and slag inclusion weld defects, design a kind of can the various defect of simulation detect the special reference block of T-shaped weld seam.
To achieve these goals, design a kind of T-shaped welded joint test block, comprise wing plate and web, wing plate and web angle are 90 °, wing plate and web welding form weld seam and welding bead, some long cross-drilled holes are arranged at weld seam two ends respectively, and aperture is different from hole depth, and the first grooved defect sturcture direction is parallel to welding bead, and be arranged in the middle of weld passes, the second grooved defect sturcture direction perpendicular to welding bead, and is arranged in the middle part of weld passes, and wing plate both wings are provided with the flat-bottom hole of some different depths.
Described wing plate length and width size is 300mm, thick 30mm.
Described web is long is 150mm, wide 300mm, thick 30mm.
Described long cross-drilled hole is 4, and be distributed in weld seam two ends, aperture is different from hole depth, is respectively the long cross-drilled hole of aperture Φ 2, the long cross-drilled hole of hole depth 25mm and aperture Φ 3, hole depth 30mm.
The pore size of described flat-bottom hole is Φ 2 or Φ 3 or Φ 4mm.
The utility model compared with the existing technology, its advantage is: T-shaped welded joint test block devises two kinds of grooved defects in weld seam, long cross-drilled hole and flat-bottom hole, simulate volume flaw respectively, planar defect and mother metal layering, long cross-drilled hole simulation welding bead wing plate side incomplete fusion or slag inclusion, the crack defect of the first grooved defects simulation different depth, the second grooved defects simulation welding bead transversal crack, on wing plate both wings, the flat-bottom hole of different depth realizes the quantitative detection to mother metal lamination defect, demonstrate the Detection results of ultrasonic phase array, facilitate the assurance in the detection to probe positions and moving direction.
[accompanying drawing explanation]
Fig. 1 is the front elevation of T-shaped test block in the utility model;
Fig. 2 is T-shaped test block defect vertical view in the utility model;
Fig. 3 is the first grooved defect front elevation in the utility model;
Fig. 4 is the first grooved defect vertical view in the utility model;
Fig. 5 is the second grooved defect front elevation in the utility model;
Fig. 6 is the second grooved defect vertical view in the utility model;
Fig. 7 is the front elevation of flat-bottom hole defect in the utility model;
Fig. 8 is the vertical view of flat-bottom hole defect in the utility model;
In figure: 1. the first grooved defect 5. the second grooved defect 6. flat-bottom hole of the long cross-drilled hole 4. of wing plate 2. web 3.;
Specify Fig. 1 as Figure of abstract of the present utility model.
[embodiment]
Below in conjunction with accompanying drawing, the utility model is described in further detail, and the structure of this device and principle are very clearly concerning the people of this specialty.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The T-shaped welded joint test block of the utility model design as shown in Figure 1.This T-shaped test block is of a size of: wing plate and web size are respectively 300 × 300 × 30 and 150 × 300 × 30, and wing plate is vertical with web, in 90 °.Three class artificial defects are devised: long cross-drilled hole, groove and flat-bottom hole in this welded joint test block, simulate volume flaw respectively, planar defect and mother metal layering, defective locations distribution as shown in Figure 2, in order to the Detection results of ultrasonic phase array will be verified, test block devises multiple artificial defect, can find out its defect relative position relation designed, and facilitates the assurance in the detection to probe positions and moving direction.Wherein, long cross-drilled hole 4, is distributed in weld seam two ends, and aperture, two ends is different from hole depth, and be respectively Φ 2 hole 25mm and Φ 3 hole 30mm, Fig. 1 and Fig. 2 is seen in position.As seen from Figure 1, long cross-drilled hole is positioned at welding bead wing plate side, simulation welding bead wing plate side incomplete fusion or slag inclusion.
Two types are had for grooved defect:
(1) the first grooved defect, its direction is parallel to welding bead, and position is positioned in the middle of weld passes, as shown in Figure 3, Figure 4.As can be seen from Figure 3 the position of the first grooved defect and magnitude relationship, be positioned at the position the most easily cracked in the middle of welding bead, groove width 0.2mm, from Fig. 4, grooved defect can be observed out and have two, length is 15mm, and groove depth is respectively 1mm and 2mm, the crack defect of simulation different depth.
(2) the second grooved defect, its direction is perpendicular to welding bead, and position is positioned in the middle part of weld passes, and defect type simulation welding bead transversal crack, can find out that from Fig. 5, Fig. 6 its length is 15mm, the degree of depth is 2mm, and the width of grooved defect is 0.2mm.
In order to realize the quantitative detection to mother metal lamination defect, test block devises the flat-bottom hole of different depth, and flat-bottom hole size is Φ 2, Φ 3 and Φ 4mm.During quantitative detection, flat-bottom hole can be utilized to make the distance-amplitude curve of compressional wave or realize TCG adjustment, and determine sensitivity, the flat-bottom hole position distribution of different size and the degree of depth are shown in Fig. 7 and Fig. 8.
Table 1 test block defect characteristic table
As above table 1 shows the information of the classification of all kinds of artificial defect, size and simulated defect.
Claims (5)
1. a T-shaped welded joint test block, comprise wing plate and web, it is characterized in that wing plate and web angle are 90 °, wing plate and web welding form weld seam and welding bead, and some long cross-drilled holes are arranged at weld seam two ends respectively, and aperture is different from hole depth, the first grooved defect sturcture direction is parallel to welding bead, and is arranged in the middle of weld passes, and the second grooved defect sturcture direction is perpendicular to welding bead, and being arranged in the middle part of weld passes, wing plate both wings are provided with the flat-bottom hole of some different depths.
2. a kind of T-shaped welded joint test block as claimed in claim 1, is characterized in that described wing plate length and width size is 300mm, thick 30mm.
3. a kind of T-shaped welded joint test block as claimed in claim 1, is characterized in that described web length is 150mm, wide 300mm, thick 30mm.
4. a kind of T-shaped welded joint test block as claimed in claim 1, it is characterized in that described long cross-drilled hole is 4, be distributed in weld seam two ends, aperture is different from hole depth, is respectively the long cross-drilled hole of aperture Φ 2, the long cross-drilled hole of hole depth 25mm and aperture Φ 3, hole depth 30mm.
5. a kind of T-shaped welded joint test block as claimed in claim 1, is characterized in that the pore size of described flat-bottom hole is Φ 2 or Φ 3 or Φ 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520780061.4U CN204989115U (en) | 2015-10-09 | 2015-10-09 | Test block of T type welding seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520780061.4U CN204989115U (en) | 2015-10-09 | 2015-10-09 | Test block of T type welding seam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204989115U true CN204989115U (en) | 2016-01-20 |
Family
ID=55123472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520780061.4U Expired - Fee Related CN204989115U (en) | 2015-10-09 | 2015-10-09 | Test block of T type welding seam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204989115U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100427A (en) * | 2018-09-05 | 2018-12-28 | 中国电建集团山东电力建设第工程有限公司 | A kind of detection test block of small diameter tube Nozzle weld phased array and its application method |
| CN110568070A (en) * | 2019-09-09 | 2019-12-13 | 西安特种设备检验检测院 | Method, device, equipment and storage medium for detecting welding joint |
| WO2020047775A1 (en) * | 2018-09-05 | 2020-03-12 | 中国电建集团山东电力建设第一工程有限公司 | Phase control array detection test block for tube socket fillet weld of small-diameter tube and use method therefor |
| CN112903826A (en) * | 2021-01-14 | 2021-06-04 | 广东核电合营有限公司 | Ultrasonic detection method for fillet weld of placed tube seat of nuclear power station |
| CN113484423A (en) * | 2021-06-22 | 2021-10-08 | 中铁山桥集团有限公司 | T-shaped welded joint TOFD detection reference block and detection method |
| CN114460108A (en) * | 2020-11-10 | 2022-05-10 | 哈电集团（秦皇岛）重型装备有限公司 | Hole-type sensitivity test piece for radiographic testing of tube-tube plate weld joint |
-
2015
- 2015-10-09 CN CN201520780061.4U patent/CN204989115U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100427A (en) * | 2018-09-05 | 2018-12-28 | 中国电建集团山东电力建设第工程有限公司 | A kind of detection test block of small diameter tube Nozzle weld phased array and its application method |
| WO2020047775A1 (en) * | 2018-09-05 | 2020-03-12 | 中国电建集团山东电力建设第一工程有限公司 | Phase control array detection test block for tube socket fillet weld of small-diameter tube and use method therefor |
| CN110568070A (en) * | 2019-09-09 | 2019-12-13 | 西安特种设备检验检测院 | Method, device, equipment and storage medium for detecting welding joint |
| CN114460108A (en) * | 2020-11-10 | 2022-05-10 | 哈电集团（秦皇岛）重型装备有限公司 | Hole-type sensitivity test piece for radiographic testing of tube-tube plate weld joint |
| CN114460108B (en) * | 2020-11-10 | 2024-04-19 | 哈电集团（秦皇岛）重型装备有限公司 | Hole type sensitivity test piece for tube-tube plate welding line ray detection |
| CN112903826A (en) * | 2021-01-14 | 2021-06-04 | 广东核电合营有限公司 | Ultrasonic detection method for fillet weld of placed tube seat of nuclear power station |
| CN113484423A (en) * | 2021-06-22 | 2021-10-08 | 中铁山桥集团有限公司 | T-shaped welded joint TOFD detection reference block and detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204989115U (en) | Test block of T type welding seam | |
| Xu et al. | Effects of corrosion on surface characterization and mechanical properties of butt-welded joints | |
| CN207650160U (en) | Thin plate aluminum alloy welding line ultrasonic detects Defect Comparison test block | |
| CN203595688U (en) | T-shaped welded joint TOFD (Time of Flight Diffraction) detection comparison test block | |
| Al-Karawi et al. | Fatigue crack repair in welded structures via tungsten inert gas remelting and high frequency mechanical impact | |
| CN104729901B (en) | A kind of method for making longitudinal crack in the weld seam for simulating test pieces | |
| CN204719007U (en) | The test block of steel tube tower thin walled tube weld seam detection Defect Comparison | |
| CN205103220U (en) | Hubbed flange steel pipe tower light -wall pipe welding seam supersound is climbed ripples detection and is used reference block | |
| CN104483223B (en) | Steel plate lamellar tearing sensitivity evaluation method | |
| CN206038623U (en) | Special test block of harmless evaluation of laser coating quality supersound | |
| CN204964460U (en) | Test block of Y type welding seam | |
| Fang et al. | Comparative study on processing property between CWW CO2 gas shielded welding and SAW | |
| CN203502389U (en) | Ultrasonic detection probe wedge block adopting time-of-flight diffraction method for welding joint of bending tube | |
| CN101578153B (en) | Multipass butt-welded joint having excellent brittle crack propagation resistance, and welded structure | |
| CN103196715B (en) | A kind of processing method of Charpy bar | |
| Konjatić et al. | The influence of the weld width on fracture behaviour of the heterogeneous welded joint | |
| CN111735722A (en) | Drop hammer tearing sample | |
| Akyel et al. | Fatigue strength of repaired cracks in base material of high strength steels | |
| CN203422355U (en) | Defect simulation and comparison test cube for ultrasonic detection | |
| CN212159694U (en) | Phased array simulation test block for multi-layer wrapped welding joint | |
| Fisher et al. | Fatigue strength enhancement by means of weld design change and the application of ultrasonic impact treatment | |
| CN207824255U (en) | A kind of K-type corner joint examination is fast | |
| CN103412055B (en) | A kind of comparison test block for ultrasonic detection | |
| Pradhan et al. | Study the effect of welding parameters during tig welding of aluminum plate and its optimization | |
| Ariyanto et al. | Fabrication of Weld Defects for Phased-Array Ultrasonic Testing |
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 |
Granted publication date: 20160120 |