CN110823928A - Detection device and method for girth welding part - Google Patents

Detection device and method for girth welding part Download PDF

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Publication number
CN110823928A
CN110823928A CN201911150016.XA CN201911150016A CN110823928A CN 110823928 A CN110823928 A CN 110823928A CN 201911150016 A CN201911150016 A CN 201911150016A CN 110823928 A CN110823928 A CN 110823928A
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China
Prior art keywords
positioning
girth
positioning device
imaging
weld
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CN201911150016.XA
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Chinese (zh)
Inventor
葛继强
孙明艳
黄姝珂
杨琴
孙朝明
孙凯华
陈捷
张圣旺
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Institute of Mechanical Manufacturing Technology of CAEP
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Institute of Mechanical Manufacturing Technology of CAEP
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Priority to CN201911150016.XA priority Critical patent/CN110823928A/en
Publication of CN110823928A publication Critical patent/CN110823928A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/04Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00Investigating materials by wave or particle radiation
    • G01N2223/03Investigating materials by wave or particle radiation by transmission
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00Investigating materials by wave or particle radiation
    • G01N2223/10Different kinds of radiation or particles
    • G01N2223/101Different kinds of radiation or particles electromagnetic radiation
    • G01N2223/1016X-ray
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00Investigating materials by wave or particle radiation
    • G01N2223/30Accessories, mechanical or electrical features
    • G01N2223/309Accessories, mechanical or electrical features support of sample holder
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00Investigating materials by wave or particle radiation
    • G01N2223/60Specific applications or type of materials
    • G01N2223/646Specific applications or type of materials flaws, defects

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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)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The invention discloses a device and a method for detecting a girth welding part, relates to the technical field of detection of girth welds of parts, and solves the technical problem of low work efficiency of detection of girth welds of parts caused by the fact that the prior art cannot combine two modes of translation and rotation of the parts in a transmission field to detect the quality of the girth welds. The detection device comprises a positioning device and an imaging device, wherein a positioning frame for mounting a part is arranged on the positioning device; the imaging device is arranged in the transmission direction of the part, and the positioning device is arranged between the transmission source and the imaging device. According to the detection device for the girth welding part, provided by the invention, the positioning device capable of rotating to the fixed position is arranged, so that the girth welding line on the part can not only translate in a transmission field, but also rotate to a corresponding angle, and the requirement of the inclination angle between the plane direction of the girth welding line and the transmission direction when the projection of the girth welding line does not exceed the range of the boss and overlap is not generated is met.

Description

Detection device and method for girth welding part
Technical Field
The invention relates to the technical field of detection of a circumferential weld of a part, in particular to a device and a method for detecting a circumferential weld welded part.
Background
An X-ray is generally adopted to detect the internal defects of the girth weld, but the transmission angle of the X-ray in a transmission field is limited to a certain extent due to an X-ray generator, and the maximum value of the transmission angle of the X-ray in the transmission field is 20 degrees.
In the prior art, a double-wall transillumination method is adopted for flaw detection of a closed structural part, namely, a transmission source is arranged on the outer side of a welding seam, a film is arranged at the welding seam on the opposite side of the transmission source, rays penetrate through a circumferential welding seam, a flaw detection result is displayed on the film, and the welding quality of the circumferential welding seam is judged according to an imaging result of the film. However, in practice, the double-wall transillumination method has certain defects. As shown in FIG. 5, due to the process requirement, there are bosses (i.e. the boss between C1 and C2 and the boss between C3 and C4, and the girth weld between C2 and C3) at the girth weld positions of the two sets of parts to be welded, and the existence of the bosses causes great interference to the girth weld imaging. When the inclination angle between the plane direction of the circumferential weld and the transmission direction is too large, the projection of the circumferential weld exceeds the range of the boss, so that the circumferential weld image is unclear and difficult to evaluate; when the inclination angle between the plane direction of the circumferential weld and the transmission direction is too small, the circumferential weld is overlapped, and the problem of inaccurate evaluation of the circumferential weld is also caused.
In the prior art, a method for adjusting an inclination angle between a plane direction of a ring weld on a part and a transmission direction is to search and detect the part by translating or rotating the part in a transmission field after determining the placement position of the part by looking up a table. This method does not take into account the fact that the part has a boss. In addition, the parts can not be combined in a translation mode or a rotation mode, so that the parts can be placed on the circle with the same radius in a transmission field, the placing quantity of the parts during one-time detection is limited, and the work efficiency of the detection of the circumferential weld of the parts is reduced.
Therefore, how to enable the part adopting the circumferential weld weldment to be capable of translating and rotating when the circumferential weld quality is detected can meet the detection requirement and improve the detection work efficiency, and the technical problem to be solved by technical personnel in the field is needed urgently.
Disclosure of Invention
In view of the above, the present invention provides a device for detecting a girth welded part, so as to solve the technical problem of low work efficiency of detecting a girth weld of a part due to the fact that the prior art cannot combine two modes of translation and rotation in a transmission field of the part to detect the quality of the girth weld.
In order to solve the technical problem, the invention provides the following technical scheme:
in a first aspect, there is provided a device for detecting a girth welded part, comprising a positioning device capable of rotating to a fixed position and an imaging device capable of imaging a girth weld of the part, wherein:
the positioning device is provided with a positioning frame for mounting parts;
the imaging device is arranged in the transmission direction of the part, and the positioning device is arranged between the transmission source and the imaging device;
the positioning device drives the part to rotate, so that the plane direction of the circumferential weld on the part and the transmission direction form an inclination angle and the circumferential weld transmits and forms an image on the imaging device.
On the basis of the technical scheme, the detection device can be improved as follows.
Furthermore, positioner includes setting element and drive setting element pivoted pivot, the locating frame sets up on the setting element and restricts the removal of circumferential weld, the pivot drives the part and rotates and make circumferential weld place plane direction and transmission direction be inclination.
Further, the imaging device comprises an imaging plate and an imaging medium arranged on the imaging plate, the imaging plate is connected with the rotating shaft, a connecting piece used for connecting a positioning piece is arranged on the imaging plate, and the rotating shaft drives the imaging plate to rotate synchronously with the part through the connecting piece.
Furthermore, the connecting piece comprises a positioning pin and an elastic piece, the positioning pin is movably connected with the positioning piece and the imaging plate respectively to limit the relative position between the positioning piece and the imaging plate, and the elastic piece is supported between the positioning piece and the imaging plate to bear the part and the positioning piece.
Further, be provided with screw hole and draw-in groove in the pivot, the formation of image board inserts the draw-in groove and can dismantle through the cooperation of housing screw and screw hole and connect in the pivot.
Furthermore, still including the pivot angle seat that is used for supporting positioner, be provided with the retaining member that is used for fixed positioner turned angle and the locating part that prevents positioner and remove on the pivot angle seat.
Furthermore, the locking piece is a locking screw which locks the positioning device through the thread matching with the swing angle seat; the locating part comprises a thrust bearing arranged in the swing angle seat and a lock nut in threaded connection with the swing angle seat, and the lock nut compresses the thrust bearing connected with the locating device.
Furthermore, the swing angle seat is provided with scales for identifying the rotation angle of the positioning device, and the positioning device is provided with a pointer for indicating the scales.
Furthermore, at least two groups of positioning frames are arranged on the positioning device and used for installing at least two groups of parts, and mark points used for determining the placing positions of the parts are also arranged on the positioning device.
In a second aspect, the present invention further provides a method for detecting a girth welded part, in which the apparatus for detecting a girth welded part described above includes:
s1, determining the inclination angle of the positioning device according to the diameter of the girth weld, the focal length of the transmission source and the placement position of the part;
s2, placing the positioning device at the placing position of the part in the transmission field, and adjusting and fixing the inclination angle of the positioning device;
and S3, placing the part on a positioning device for transmission imaging.
Compared with the prior art, the invention has the following advantages:
according to the detection device for the girth welding part, provided by the invention, the positioning device capable of rotating to the fixed position is arranged, so that the girth welding line on the part can not only translate in a transmission field, but also rotate to a corresponding angle, and the requirement of the inclination angle between the plane direction of the girth welding line and the transmission direction when the projection of the girth welding line does not exceed the range of the boss and overlap is not generated is met.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic perspective view of an apparatus for inspecting a girth welded part according to the present invention;
FIG. 2 is a schematic front view of the apparatus for inspecting a girth welded part according to the present invention;
FIG. 3 is a schematic top view of the apparatus for inspecting a girth welded part according to the present invention;
FIG. 4 is a schematic structural view of a swing angle seat of the apparatus for inspecting a girth welded part according to the present invention;
FIG. 5 is a partial schematic view of a weld-encircling joint location of a part;
FIG. 6 is a schematic illustration of a comparison of prior art and present invention methods for detecting a girth weld;
FIG. 7 is a schematic view of a method of inspecting a girth welded part according to the present invention.
Reference numbers and corresponding part names in the drawings:
1. positioning a plate; 2. a film; 3. a film base plate; 4. a swing angle seat; 5. a rotating shaft; 6. locking the screw; 7. a positioning frame; 8. a pin; 9. a spring; 10. a compression screw; 11. a thrust bearing; 12. marking points; 13. and (5) locking a nut.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
A detection device for circular seam welding parts is shown in figures 1 to 3 and comprises a positioning plate 1, a film bottom plate 3, a swing angle seat 4 and a rotating shaft 5. The positioning plate 1 is provided with a positioning frame 7 for mounting parts, the positioning frame 7 is of a hollow structure, the inner contour of the positioning frame 7 is matched with the outer contour of a circumferential weld weldment part, and the plane of a circumferential weld of the part is perpendicular to the horizontal plane at the initial position. The positioning plate 1 may be a plate-shaped structure or a rod structure, and mainly functions to connect the positioning frame 7 and the rotating shaft 5. The rotating shafts 5 are respectively connected to two ends of the positioning plate 1, the swing angle seats 4 are two groups, and holes for mounting the rotating shafts 5 are formed in the swing angle seats. The rotating shafts 5 are respectively arranged in the holes of the two groups of swing angle seats 4, so that the positioning plate 1 can rotate. A locking screw 6 in threaded fit is arranged on the swing angle seat 4, and the rotating shaft 5 is screwed into the swing angle seat 4 through the locking screw 6 to limit rotation, so that the positioning plate 1 can fix the rotating angle on the swing angle seat 4.
As shown in fig. 1 to 3, the film base plate 3 is disposed in the transmission direction of the part, and the positioning plate 1 is located between the transmission source and the film base plate 3. And a film 2 is laid on the film bottom plate 3 and is used for imaging the circumferential weld of the part. The transmission source in this embodiment includes, but is not limited to, X-rays.
When the circumferential weld of the part is detected, the swing angle seat 4 is moved to a proper position according to the transmission angle in the transmission field, and then the positioning plate 1 is rotated, so that the plane direction of the circumferential weld of the part and the transmission direction form a proper inclination angle, and the requirements that the projection of the circumferential weld on the film 2 does not exceed the boss range and does not overlap are met. The detection device for the girth welding part provided by the invention can realize the translation of the girth welding line of the part in the transmission field and can also enable the girth welding line of the part to incline at a proper angle in the transmission field, so that the part can be placed in a transmission circle with a larger radius taking a central beam of the transmission field as an axis. Compared with the single method for changing the projection of the circumferential weld through translation or rotation of the part in the prior art, the method can place more parts to be detected in the same transmission field, so that the detection efficiency of the circumferential weld of the part is greatly improved.
Example 2
In order to better implement the present invention, the present embodiment is further optimized based on the above embodiments, and particularly adopts the following structure:
as shown in fig. 1 to 3, the rotating shafts 5 are respectively connected to both ends of the film base plate 3, and a pin 8 and a spring 9 are provided between the positioning plate 1 and the film base plate 3. Specifically, corresponding holes are arranged on the positioning plate 1 and the film bottom plate 3, the pin 8 penetrates through the holes, and the spring 9 is supported between the positioning plate 1 and the film bottom plate 3.
It is worth noting that the parts are in contact with the film 2 under the action of gravity, and the parts are supported by the film base plate 3. The positioning plate 1 keeps contact with the part under the action of the elastic force of the spring 9, and the accurate positioning of the part is realized. The spring force of the spring 9 needs to be greater than the weight of the positioning plate 1 and lower than the sum of the weights of the positioning plate 1 and the parts.
As shown in fig. 1 to fig. 3, as a further optimization, a clamping groove for connecting the film base plate 3 is provided on the rotating shaft 5, and a threaded through hole communicated with the clamping groove is provided on the outer wall of the rotating shaft 5, both ends of the film base plate 3 are respectively inserted into the clamping groove, and the film base plate 3 is pressed tightly through the cooperation of the pressing screw 10 and the threaded through hole, so that the detachable connection of the film base plate 3 is realized, and the assembly of the film base plate 3 is facilitated.
According to the embodiment, the film 2 can synchronously rotate with the positioning plate 1, the fact that the projection of the circumferential weld of the part on the film 2 is forward projection is guaranteed, and the accuracy of evaluation of the circumferential weld of the part is improved.
Example 3
In order to better implement the present invention, the present embodiment is further optimized based on the above embodiments, and particularly adopts the following structure:
as shown in fig. 1 to 3, a thrust bearing 11 and a lock nut 13 are disposed in the pivot angle seat 4, and the thrust bearing 11 is vertically connected to the axial direction of the rotating shaft 5, and is mainly used for preventing the positioning plate 1 from moving in the pivot angle seat 4 along the axial direction of the rotating shaft 5. The lock nut 13 is connected with the swing angle seat 4 through threads to tightly press the thrust bearing 11 in the swing angle seat 4, so that the axial positioning function of the positioning plate 1 is realized.
As shown in fig. 4, in particular, a scale for identifying the rotation angle of the positioning plate 1 is provided on the outer surface of the swing angle base 4. Meanwhile, a pointer for indicating the scale is provided on the end surface of the rotating shaft 5. The scale and the pointer may be marks marked on the swing angle seat 4 or the rotating shaft 5, or may be an angle measurer and a pointer respectively arranged on the swing angle seat 4 or the rotating shaft 5.
As shown in fig. 3, the positioning plate 1 of the present embodiment can also be designed to have a structural form of two sets of positioning frames 7, and the circumferential weld of two sets of parts can be detected at the same time, so as to further improve the working efficiency of the detection. The center of the positioning plate 1 is also provided with a mark point 12, and the placing position of the part from the central beam of the transmission field can be determined through the mark point 12. It should be noted that, in this embodiment, the positioning plate 1 may also be designed to have a structure with three, four, five, etc. groups of positioning frames 7, and the number of the positioning frames 7 is not specifically limited in this embodiment.
Example 4
As shown in fig. 5, taking a spherical part as an example, in order to facilitate the welding of the spherical part, bosses (i.e., C) are respectively provided on the welding end surfaces of two hemispherical parts1And C2Boss and C between3And C4Boss in between), C2And C3And a circumferential weld is arranged between the two parts. When the transmission source transmits the spherical part, a left boss contour C is formed on the film 21Left weld edge C2Weld right boundary C3And the weld right boss profile C4Is projected in an elliptical manner. When the left boss contour C1Left boundary C with weld2At the intersection, or the right weld boundary C3And the profile C of the right boss of the welding seam4At the intersection, or left weld boundary C2And right boundary of weld joint C3When overlapping, the problem of unclear circumferential weld images can be caused, and the quality of the circumferential weld is difficult to evaluate.In addition, left weld boundary C2And right boundary of weld joint C3When separating, the inclination angle between the plane direction of the circumferential weld and the transmission direction is too small, and the left boundary C of the weld2And right boundary of weld joint C3The projection is self-overlapping projection, and the evaluation of the quality of the circumferential weld is not facilitated. Therefore, to accurately evaluate the quality of the girth weld, it is necessary to simultaneously satisfy: left boundary of weld C2And right boundary of weld joint C3Intersect and the left boss profile C1Left boundary C with weld2Elliptical projection phase separation, right weld boundary C3And the profile C of the right boss of the welding seam4The elliptical projections are separated. I.e. satisfies Ymax (C)1)<Ymin(C2);Ymax(C3)<Ymin(C4);Ymax(C2)>Ymin(C3) The conditions of (1).
As shown in FIG. 6, in order to satisfy the above conditions, the left graph shows that the prior art single method for detecting by changing the projection of the girth weld through translation or rotation of the part is adopted, the part can only be placed at an angle of α degrees with the central beam of the transmission field due to the limitation of the maximum transmission angle of the transmission field, the right graph shows that the detection device of the invention is adopted to detect the girth weld of the part, the girth weld can not only be translated, but also be rotated by a corresponding angle, therefore, in the transmission field under the same conditions, the part can be placed in a transmission circle range with a larger radius taking the central beam of the transmission field as the axis, at the moment, the part forms an angle of β degrees with the central beam of the transmission field, the detection device of the invention is adopted to detect the girth weld of the part, so that β is more than α, and the lower four1)<Ymin(C2);Ymax(C3)<Ymin(C4);Ymax(C2)>Ymin(C3) Projection of the conditional girth weld.
Specifically, the invention also provides a detection method of the girth welding part, and the detection device of the girth welding part is adopted. Firstly, the inclination angle of the positioning plate 1 is determined according to the diameter of the girth weld, the focal length of the transmission source and the placing position of the part. The diameter of the circumferential weld can be measured by a vernier caliper, the focal length of the transmission source can be measured by a measuring ruler, and the placing position of the part from the central beam of the transmission field can be determined by the mark point 12 on the positioning plate 1. From this, determine the inclination of locating plate 1. Then, the detection device is placed in the transmission field, so that the mark points 12 on the positioning plate 1 meet the distance requirement from the central beam of the transmission field, and the inclination angle of the positioning plate 1 is adjusted and fixed according to the scales on the swing angle seat 4 and the pointer on the rotating shaft 5. Finally, the parts are placed in the positioning frame 7 on the positioning plate 1 for transmission imaging.
In the present embodiment, if Ymax (C) can be satisfied at the same time1)<Ymin(C2);Ymax(C3)<Ymin(C4);Ymax(C2)>Ymin(C3) The inclined angle of the positioning plate 1 under the condition can transmit the projection shown by four groups of ellipses at the lower part in the figure 6, thereby improving the overhaul efficiency of the circumferential weld of the part.
Preferably, in order to further improve the detection efficiency of the part girth weld, the position of the detection device may be arranged in the transmission field according to the arranging method shown in fig. 7. Specifically, the eight groups of peripheral parts are distributed by taking the central beam of the transmission field as an axis, and the two groups of parts are arranged at the central position of the central beam of the transmission field. Wherein, the inclination angle of the positioning plate 1 of the eight groups of parts at the periphery is different from the inclination angle of the positioning plate 1 of the two groups of parts at the central position, and is determined by calculation respectively. Therefore, compared with the prior art, the method for detecting the girth weld of the part improves the working efficiency by 5 to 10 times.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. A detection device for a girth welded part, comprising a positioning device capable of rotating to a fixed position and an imaging device capable of imaging a girth weld of the part, wherein:
the positioning device is provided with a positioning frame for mounting parts;
the imaging device is arranged in the transmission direction of the part, and the positioning device is arranged between the transmission source and the imaging device;
the positioning device drives the part to rotate, so that the plane direction of the circumferential weld on the part and the transmission direction form an inclination angle and the circumferential weld transmits and forms an image on the imaging device.
2. The apparatus for detecting a girth welded part according to claim 1, wherein the positioning device includes a positioning member and a rotating shaft for driving the positioning member to rotate, the positioning frame is disposed on the positioning member and limits movement of the girth weld, and the rotating shaft drives the part to rotate so that the plane direction of the girth weld and the transmission direction are inclined.
3. The apparatus for detecting a girth welded part according to claim 2, wherein the imaging device comprises an imaging plate and an imaging medium disposed on the imaging plate, the imaging plate is connected to the rotating shaft, a connecting member for connecting the positioning member is disposed on the imaging plate, and the rotating shaft drives the imaging plate to rotate synchronously with the part via the connecting member.
4. The apparatus of claim 3, wherein the connecting member includes a positioning pin movably connected to the positioning member and the imaging plate to limit the relative position therebetween and an elastic member supported between the positioning member and the imaging plate to carry the component and the positioning member.
5. The apparatus for detecting the girth welded part of claim 4, wherein the rotating shaft is provided with a threaded hole and a slot, and the imaging plate is inserted into the slot and detachably connected to the rotating shaft by the cooperation of a compression screw and the threaded hole.
6. The apparatus for inspecting a girth welded part according to any one of claims 1 to 5, further comprising a swing seat for supporting the positioning device, wherein the swing seat is provided with a locking member for fixing a rotation angle of the positioning device and a limiting member for preventing the positioning device from moving.
7. The apparatus for inspecting a girth welded part according to claim 6, wherein the locking member is a locking screw for locking the positioning device by engaging with the thread of the seat; the locating part comprises a thrust bearing arranged in the swing angle seat and a lock nut in threaded connection with the swing angle seat, and the lock nut compresses the thrust bearing connected with the locating device.
8. The apparatus for detecting a girth welded part according to claim 7, wherein the seat has a scale for identifying a rotation angle of the positioning device, and the positioning device has a pointer for indicating the scale.
9. The apparatus for detecting a girth welded part according to claim 8, wherein at least two sets of positioning frames are disposed on the positioning device for mounting at least two sets of parts, and a marking point for determining the placement position of the parts is disposed on the positioning device.
10. A method of inspecting a girth welded part, characterized by using the apparatus for inspecting a girth welded part according to any one of claims 1 to 9, comprising the steps of:
s1, determining the inclination angle of the positioning device according to the diameter of the girth weld, the focal length of the transmission source and the placement position of the part;
s2, placing the positioning device at the placing position of the part in the transmission field, and adjusting and fixing the inclination angle of the positioning device;
and S3, placing the part on a positioning device for transmission imaging.
CN201911150016.XA 2019-11-21 2019-11-21 Detection device and method for girth welding part Pending CN110823928A (en)

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CN102507617A (en) * 2011-11-23 2012-06-20 兰州瑞奇戈德测控技术有限公司 X-ray digital imaging detection device for detecting welding seam of tube row
CN204855416U (en) * 2015-08-20 2015-12-09 武汉钢铁(集团)公司 Path pipe ring welding seam RT detects high -efficient device of shooing
CN107478665A (en) * 2017-08-31 2017-12-15 重庆日联科技有限公司 Tank bottom class butt welding part welding line detector and detection method
CN108007944A (en) * 2017-12-08 2018-05-08 中国航发动力股份有限公司 A kind of annular butt welding fitting X-ray detection frock
CN108318509A (en) * 2018-02-07 2018-07-24 东方电气集团东方锅炉股份有限公司 Two-way focusing method and focusing mechanism for ray detection
CN208736820U (en) * 2018-07-19 2019-04-12 湖南南方通用航空发动机有限公司 A kind of detection fixture of pipe weld

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Application publication date: 20200221