CN117074441A - X-ray transillumination detection method and application of cylinder weld joint crossing part - Google Patents
X-ray transillumination detection method and application of cylinder weld joint crossing part Download PDFInfo
- Publication number
- CN117074441A CN117074441A CN202310874329.XA CN202310874329A CN117074441A CN 117074441 A CN117074441 A CN 117074441A CN 202310874329 A CN202310874329 A CN 202310874329A CN 117074441 A CN117074441 A CN 117074441A
- Authority
- CN
- China
- Prior art keywords
- circumferential
- cylinder
- weld
- longitudinal
- welding seam
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating 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
- G01N23/02—Investigating 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
- G01N23/04—Investigating 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
Landscapes
- 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)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The invention relates to the technical field of manufacturing of pressure equipment, in particular to an X-ray transillumination detection method and application of a cylinder welding seam crossing part, wherein the cylinder welding seam comprises a circumferential welding seam perpendicular to the axis of the cylinder and a longitudinal welding seam parallel or nearly parallel to the axis of the cylinder, the crossing point of the circumferential welding seam and the longitudinal welding seam is a welding seam crossing point, a circumferential X-ray flaw detector is used for simultaneously performing transillumination detection on the circumferential welding seam and the longitudinal welding seam around the welding seam crossing point, the transillumination mode is center inner transillumination, the transillumination detection length L of the longitudinal welding seam is less than or equal to 0.247f-W/2, f is the distance from a ray source to the cylinder, and W is the width of the circumferential welding seam. The circumferential X-ray flaw detector is used for simultaneously detecting the circumferential weld joint and the longitudinal weld joint, and the utilization rate of ray beams is high; and the detection is not needed for multiple times, and the detection efficiency is high.
Description
Technical Field
The invention relates to the technical field of manufacturing of pressure equipment, in particular to an X-ray transillumination detection method and application of a welding line crossing part of a cylinder.
Background
The cylinder is one of the most important compression elements of the pressure vessel. In the production of cylindrical barrels, larger diameter barrels require the use of steel plates to be pressed into cylinders or semi-cylinders and welded, with longitudinal welds occurring parallel or nearly parallel to the barrel axis. Meanwhile, two ends of the cylinder body are required to be welded with the sealing heads to manufacture a complete pressure container, and when the length of the cylinder body is long, the steel plate is required to be manufactured into a plurality of cylinder sections due to the limitation of the breadth size of the steel plate, and then the cylinder sections are welded to obtain the cylinder body with the required length. The welding of the cylinder body and the sealing head and the welding between the cylinder sections form a circumferential weld joint perpendicular to the axis of the cylinder body. The quality of the welding seam of the cylinder body has a non-negligible influence on whether the pressure vessel can be normally used, so that the detection of the quality of the welding seam of the cylinder body is an essential important link in the production of the pressure vessel.
The existing method for detecting the quality of the welding seam of the cylinder body is to use an X-ray flaw detector to carry out transillumination on the welding seam, and the common transillumination method comprises center inner transillumination (also called center circumferential transillumination) and source inner eccentric transillumination detection. For circumferential weld joints, a circumferential X-ray flaw detector (called a circumferential flaw detector for short) is generally used for central inner transmission type transillumination, and X-rays are irradiated at a cone angle of 30 degrees by taking a focus as the center; for longitudinal welding lines, a common directional X-ray flaw detector (for short, a directional flaw detector) adopts modes of external single-wall transillumination of a source, external double-wall single-shadow transillumination of a source, internal single-wall transillumination of a source and the like to detect. According to statistics, the arc starting and arc receiving positions of the longitudinal welding seam are most prone to defects, so that the arc starting and arc receiving positions of the longitudinal welding seam, namely the intersection point of the longitudinal welding seam and the circumferential welding seam, are key areas for detecting the quality of the longitudinal welding seam.
However, when the directional flaw detector is used for detecting the quality of the longitudinal welding seam, the relative positions of the cylinder and the directional flaw detector are required to be adjusted according to the positions of the longitudinal welding seam, the longitudinal welding seam is horizontally placed, the directional flaw detector irradiates vertically, if a plurality of longitudinal welding seams exist on the cylinder, repeated adjustment of the positions and centering are required to detect for many times, the detection efficiency is low, the irradiation amount of X-rays is large, and the irradiation amount is large.
Meanwhile, when a circumferential flaw detector is used for detecting the circumferential butt welding joint, the transillumination arrangement requires that the beam center vertically points to the transillumination welding seam. X-rays generated by the circumferential X-ray flaw detector are irradiated at a cone angle of 30 degrees by taking a focus as a center, and a cone area with the cone angle of less than or equal to 27.72 degrees is an available area meeting the quality requirement in a cone-shaped irradiation field, namely, the single-side irradiation angle is less than or equal to 13.86 degrees. The existing detection method only detects the circumferential weld, rays outside the circumferential weld cannot be effectively utilized, the utilization rate of the rays is very low, the rays which are not utilized become harmful rays, and potential safety hazards exist.
Therefore, the existing method for detecting the quality of the welding seam of the cylinder has the following defects: 1. the flaw detector equipment is required to be replaced to respectively detect circumferential weld joints and longitudinal weld joints, and position adjustment and centering are carried out for a plurality of times, so that the detection efficiency is low and the radiation quantity is large; 2. the utilization rate of the irradiation beam of the circumferential machine is low, and the unutilized rays become harmful rays.
Disclosure of Invention
Aiming at the problems that in the prior art, circumferential weld detection and longitudinal weld detection are required to be respectively carried out on welding quality detection of a welding seam of a cylinder body, flaw detector equipment is required to be replaced, position adjustment and centering are required to be carried out for many times, the detection efficiency is low, and the radiation quantity is large; the invention provides an X-ray transillumination detection method and application of a cylinder welding seam crossing part, which are used for performing transillumination detection on circumferential welding seams and longitudinal welding seams around welding seam crossing points by using a circumferential X-ray flaw detector, and have high utilization rate of ray beams; and the detection is not needed for multiple times, and the detection efficiency is high.
In a first aspect, the invention provides an X-ray transillumination detection method for a cross part of a welding seam of a cylinder, wherein the welding seam of the cylinder comprises a circumferential welding seam perpendicular to the axis of the cylinder and a longitudinal welding seam parallel or nearly parallel to the axis of the cylinder, the intersection point of the circumferential welding seam and the longitudinal welding seam is a welding seam intersection point, a circumferential X-ray flaw detector is used for transillumination detection of the circumferential welding seam and the longitudinal welding seam around the welding seam intersection point, the transillumination mode is center inner transillumination, the transillumination detection length L of the longitudinal welding seam is less than or equal to 0.247f-W/2, f is the distance from a radiation source to the cylinder, W is the width of the circumferential welding seam, and 0.247 is the tangent value of a single-side irradiation angle of the circumferential X-ray flaw detector, namely tan13.86 degrees.
Further, the detecting step includes:
(1) Centering, selecting proper specifications of a circumferential flaw detector according to the thickness and the specifications of the cylinder, arranging the circumferential X-ray flaw detector along the axis of the cylinder, enabling the circumferential weld joint and the X-ray beam center line of the circumferential X-ray flaw detector to be positioned on the same plane, and fixing the circumferential X-ray flaw detector and the cylinder;
(2) The cloth piece is laid on the outer surface of the cylinder, a longitudinal detection dark bag filled with a film is laid on the outer side of the longitudinal detection dark bag, a lead plate is laid on the outer side of the longitudinal detection dark bag, and an image quality meter is laid on the inner surface of the cylinder; the film is rectangular, and the welding seam intersection points and the image quality meter are all positioned in the coverage surface of the film;
(3) And (3) irradiating, namely starting the circumferential X-ray flaw detector, turning off after a certain time of irradiation, and developing the film to obtain an X-ray transillumination detection image.
Further, the step (2) further comprises placing a lap mark on the inner surface of the barrel, and enabling the lap mark to be positioned in the coverage surface of the film; the lap marks are respectively arranged on two sides of the circumferential weld near the intersection point of the weld, the distance between the lap mark on the same side as the longitudinal weld and the circumferential weld is smaller than the transillumination detection length L, and the distance between the lap mark on the other side and the circumferential weld is more than or equal to 5mm; the image quality meter is arranged on one side of the lap joint mark on the same side of the longitudinal weld joint, which is far away from the intersection point of the weld joint, and the filament side is close to the lap joint mark position as much as possible.
Further, the film grade used in step (2) is higher than or equal to the C4 grade.
Further, when the focal length is 700mm in the step (3), the exposure of the A-level and AB-level rays is more than or equal to 18 mA.min, and the focal length is the distance between the ray source detected along the center of the X-ray beam and the film; the exposure may be scaled by the inverse square law (the square of the focal length is inversely proportional to the exposure) when the focal length is changed.
In a second aspect, the invention provides an application of the X-ray transillumination detection method in detection of a weld joint of a cylinder.
Further, the cylinder body is formed by welding at least two cylinder sections, circumferential weld joints are arranged at the joint of the cylinder sections, at least one longitudinal weld joint is arranged on at least one cylinder section, and each longitudinal weld joint is intersected with the circumferential weld joint to form a weld joint point.
Further, the cylinder body comprises a cylinder section and an end socket welded with the cylinder section, the end socket comprises an elliptical end socket, a spherical end socket, a dish-shaped end socket and a spherical crown-shaped end socket, a circumferential weld joint is arranged at the joint of the end socket and the cylinder section, a splice joint is arranged on the end socket, and at least one longitudinal weld joint is arranged on the cylinder section; each piece of the seam is intersected with the circumferential weld to form a weld intersection point, and each piece of the longitudinal weld is intersected with the circumferential weld to form a weld intersection point.
Further, when the welding line of the cylinder is detected, an image quality meter is arranged at the corresponding position of the inner surface of the cylinder for each welding line intersection point, a longitudinal detection dark bag provided with films is paved at the corresponding position of the outer surface of the cylinder, the image quality meter of the group and the corresponding welding line intersection point are all positioned in the coverage surface of the film of the group, and then irradiation and development are carried out to obtain an X-ray transillumination detection image of the welding line intersection point position.
Further, the method further comprises the steps of paving a circumferential detection hidden bag provided with a rectangular film, paving a lead plate on the outer side of the longitudinal detection hidden bag, and overlapping the symmetry axis of the rectangular film in the circumferential detection hidden bag along the length direction with the central line of the circumferential welding seam; and after the longitudinal detection hidden bags and the circumferential detection hidden bags are uniformly distributed, carrying out irradiation and development, and simultaneously obtaining an X-ray transillumination detection image of the intersection point part of the welding line and an X-ray transillumination detection image of the circumferential welding line.
The invention has the beneficial effects that:
1. the invention provides an X-ray transillumination detection method and application of a cylinder welding seam crossing part, which uses a circumferential X-ray flaw detector to simultaneously perform transillumination detection on circumferential welding seams and longitudinal welding seams around welding seam crossing points, omits a link of performing transillumination detection on the longitudinal welding seams by using a directional X-ray flaw detector, does not need to replace flaw detector equipment, omits steps of repeatedly adjusting the relative positions and centering of the cylinder and the flaw detector, reduces adjustment time, and further improves detection efficiency.
2. The invention does not need to carry out multiple transillumination detection, reduces the irradiation times of the flaw detector, reduces the irradiation amount of X rays and reduces the radiation injury to detection personnel.
3. According to the invention, the detection range of the circumferential X-ray flaw detector is enlarged from the original detection-only circumferential weld joint region to the simultaneous detection of the circumferential weld joint and the longitudinal weld joint, and part of the ray beams which are wasted due to the original irradiation outside the circumferential weld joint region are used for detecting the longitudinal weld joint, so that the utilization rate of the ray beams is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic view of the conical transillumination field of the circumferential X-ray inspection machine in step (1) of example 1.
FIG. 2 is a side developed view of the cylinder in step (1) of example 1.
FIG. 3 is a schematic view of the position of the cloth piece in the step (2) of example 1.
In the figure, the first tube section, the 2-circumferential weld, the 3-second tube section, the 4-ray source, the 5-first longitudinal weld, the 6-circumferential section, the 7-second longitudinal weld, the 8-circumferential detection hidden pocket, the 9-first longitudinal detection hidden pocket and the 10-second longitudinal detection hidden pocket are arranged in the figure.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
Example 1
The X-ray transilluminating detection method for the crossing part of the welding seam of the cylinder body is applied to the detection of the welding seam of the cylinder body, a circumferential X-ray flaw detector is used for carrying out center inner transilluminating on the circumferential welding seam 2 and the periphery of the cylinder body, the inner diameter of the cylinder body is 1500mm, and the plate thickness is 10mm. The cylinder body is formed by welding a first cylinder section 1 and a second cylinder section 3, the length of the first cylinder section 1 is 700mm, the length of the second cylinder section 3 is 600mm, a circumferential welding seam 2 perpendicular to the axis of the cylinder body exists at the joint of the first cylinder section 1 and the second cylinder section 3, a first longitudinal welding seam 5 parallel to the axis of the cylinder body exists on the first cylinder section, a second longitudinal welding seam 7 parallel to the axis of the cylinder body exists on the second cylinder section, the intersection point of the first longitudinal welding seam 5 and the circumferential welding seam 2 is a first welding seam intersection point, and the intersection point of the second longitudinal welding seam 7 and the circumferential welding seam 2 is a second welding seam intersection point; the widths of the circumferential weld joint 2, the first longitudinal weld joint 5 and the second longitudinal weld joint 7 are 10mm, and the flaw detection proportion of the weld joints is 20%.
The welding seam detection step of the cylinder comprises the following steps:
(1) Centering, selecting a circumferential flaw detector of XXGHA-2505 according to the thickness and specification of a cylinder body, wherein the focal point is a rectangle with the thickness of 1.0X 2.5mm, the focal point size d is (1.0+2.5)/2=1.75 mm, arranging the circumferential X-ray flaw detector along the axis of the cylinder body, enabling the circumferential welding seam 2 to be on the same plane with the X-ray beam center line of the circumferential X-ray flaw detector, fixing the circumferential X-ray flaw detector and the cylinder body, and projecting a ray beam of the circumferential X-ray flaw detector on the cylinder body by taking a ray source 4 as a starting point to generate a circumferential section 6 which takes the circumferential welding seam 2 as the center and has the width of 370 mm;
through calculation, the theoretical maximum length L of the transillumination detection of the longitudinal welding seam 5 is 0.247 x 750-10/2=180 mm, the width of the heat affected zone of the circumferential welding seam 2 is subtracted by 5mm, and then the patch errors are considered, the transillumination detection lengths of the first longitudinal welding seam 5 and the second longitudinal welding seam 7 are 145mm, so that the flaw detection proportion of the first cylinder section 1 and the second cylinder section 3 can be simultaneously met.
(2) The method comprises the steps of (1) laying a first longitudinal detection hidden bag 9 and a second longitudinal hidden bag 10 on the outer surface of a cylinder, enabling a symmetry axis of a rectangular film in the first longitudinal detection hidden bag 9 along the length direction to coincide with the central line of a first longitudinal welding line 5, enabling a symmetry axis of a rectangular film in the second longitudinal detection hidden bag 10 along the length direction to coincide with the central line of a second longitudinal welding line 7, laying two groups of lap joint marks and two groups of image quality meters on the inner surface of the cylinder, and enabling each group of lap joint marks, image quality meters and corresponding welding line intersection points to be located in the coverage surfaces of the films in the group of longitudinal detection hidden bags; simultaneously, a circumferential detection hidden bag 8 provided with an image quality meter and a film is paved, and the symmetry axis of the film in the circumferential detection hidden bag 8 along the length direction is coincident with the central line of the circumferential welding seam 2; lead plates are paved outside the first longitudinal detection dark bag 9, the second longitudinal detection dark bag 10 and the annular detection dark bag 8; the film grades of the first longitudinal detection dark bag 9, the circumferential detection dark bag 8 and the second longitudinal dark bag 10 are all C4 grades.
The lap marks are respectively arranged on two sides of the circumferential weld joint 2 near the intersection point of the weld joints, the distance between the lap marks on the same side of the corresponding longitudinal weld joint and the circumferential weld joint 2 is 140mm, and the distance between the lap marks on the other side and the circumferential weld joint is 5mm.
(3) And (3) irradiating, namely starting the circumferential X-ray flaw detector, wherein the focal length of transillumination detection is 760mm, calculating the exposure amount to be 21.22 mA.min according to an exposure curve and a square inverse formula, taking the irradiation time to be 4.5min according to the power of the flaw detector, turning off the machine after the irradiation is finished, developing a film, simultaneously obtaining an X-ray transillumination detection image of the intersection point part of a first welding seam, an X-ray transillumination detection image of the intersection point part of a second welding seam and an X-ray transillumination detection image of the intersection point part of a circumferential welding seam 2, taking the X-ray transillumination detection image of the intersection point part of the first welding seam as a detection image of a first welding seam 5, and taking the X-ray transillumination detection image of the intersection point part of the second welding seam as a detection image of a second longitudinal welding seam.
Compliance reviews of the principal parameters of example 1, the most allowable source-to-barrel distance in example 1Small value f min ≥10db 2/3 =10*1.75*10 2/3 =81 mm, allowing maximum geometric unclear Ug max ≤0.1b 1/3 =0.1*10 1/3 =0.215 mm; whereas the distance f from the source to the drum in example 1 was 750mm, f>f min The method comprises the steps of carrying out a first treatment on the surface of the According to the maximum size d of the focus max Calculated =2.5 mm, maximum geometric unclear ug=b×d max /f=0.033mm，Ug<Ug max Meets the standard.
Comparative example 1
The application of the X-ray transillumination detection method of the cylinder in the detection of the welding seam of the cylinder uses a conventional detection method to detect the quality of the welding seam of the cylinder, which is the same as that of the embodiment 1, the first longitudinal welding seam and the second longitudinal welding seam are subjected to source external directional transillumination by using a directional X-ray flaw detector, and the circumferential welding seam is subjected to central internal transillumination by using a circumferential X-ray flaw detector.
The negative film results obtained by X-ray transillumination of example 1 and comparative example 1 are shown in Table 1:
TABLE 1 negative results for each group of X-ray transillumination
The quality of the bottom sheets of example 1 and comparative example 1 were acceptable.
Compared with comparative example 1, in example 1, the longitudinal welds of the first cylindrical shell section, the longitudinal welds of the second cylindrical shell section and the circumferential welds can be simultaneously obtained by performing center inner-penetrating type transillumination on the circumferential welds by using a circumferential X-ray flaw detector without performing source outer-directional transillumination on the longitudinal welds of the first cylindrical shell section and the second cylindrical shell section by using a directional X-ray flaw detector; the total time of transillumination in example 1 was 4.5min, while the total time of transillumination in comparative example 1 was 10min, which is the sum of three transillumination times, and comparative example 1 also required more time-consuming operations such as changing transillumination equipment, adjusting and fixing the position of the cylinder.
Therefore, on the basis of qualified film quality, the embodiment 1 reduces the number of transillumination, simplifies transillumination links, shortens total transillumination time, and improves transillumination detection efficiency.
Although the present invention has been described in detail by way of preferred embodiments with reference to the accompanying drawings, the present invention is not limited thereto. Various equivalent modifications and substitutions may be made in the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and it is intended that all such modifications and substitutions be within the scope of the present invention/be within the scope of the present invention as defined by the appended claims.
Claims (10)
1. The X-ray transillumination detection method for the intersection part of the welding seam of the cylinder body comprises a circumferential welding seam perpendicular to the axis of the cylinder body and a longitudinal welding seam parallel or nearly parallel to the axis of the cylinder body, wherein the intersection point of the circumferential welding seam and the longitudinal welding seam is the welding seam intersection point.
2. The X-ray transillumination detection method of claim 1, wherein the steps comprise:
(1) Centering, selecting proper specifications of a circumferential flaw detector according to the thickness and the specifications of the cylinder, arranging the circumferential X-ray flaw detector along the axis of the cylinder, enabling the circumferential weld joint and the X-ray beam center line of the circumferential X-ray flaw detector to be positioned on the same plane, and fixing the circumferential X-ray flaw detector and the cylinder;
(2) The cloth piece is laid on the outer surface of the cylinder, a longitudinal detection dark bag filled with a film is laid on the outer side of the longitudinal detection dark bag, a lead plate is laid on the outer side of the longitudinal detection dark bag, and an image quality meter is laid on the inner surface of the cylinder; the film is rectangular, and the welding seam intersection points and the image quality meter are all positioned in the coverage surface of the film;
(3) And (3) irradiating, namely starting the circumferential X-ray flaw detector, turning off after a certain time of irradiation, and developing the film to obtain an X-ray transillumination detection image.
3. The X-ray transillumination detection method of claim 2, wherein step (2) further comprises placing a lap mark on the inside surface of the barrel and positioning the lap mark within the footprint of the film; the lap marks are respectively arranged on two sides of the circumferential weld near the intersection point of the weld, the distance between the lap mark on the same side as the longitudinal weld and the circumferential weld is smaller than the transillumination detection length L, and the distance between the lap mark on the other side and the circumferential weld is more than or equal to 5mm; the image quality meter is arranged on one side of the lap joint mark on the same side of the longitudinal weld joint, which is far away from the intersection point of the weld joint, and the filament side is close to the lap joint mark position as much as possible.
4. The X-ray transillumination detection method of claim 2, wherein step (2) uses a film grade equal to or higher than the C4 grade.
5. The X-ray transillumination detection method according to claim 2, wherein in the step (3), when the focal length is 700mm, the exposure amount of the A-level and AB-level rays is not less than 18 mA.min; the focal distance is the distance between the source of radiation detected along the center of the X-ray beam and the film.
6. Use of the X-ray transillumination detection method of claim 1 in the detection of a weld of a cylinder.
7. The use of claim 6, wherein the cylinder comprises a cylinder section and a seal head welded with the cylinder section, the seal head comprises an elliptical seal head, a spherical seal head, a dished seal head and a spherical cap seal head, a circumferential weld joint is arranged at the joint of the seal head and the cylinder section, a splice joint is arranged on the seal head, and at least one longitudinal weld joint is arranged on the cylinder section; each piece of the seam is intersected with the circumferential weld to form a weld intersection point, and each piece of the longitudinal weld is intersected with the circumferential weld to form a weld intersection point.
8. The use of claim 6, wherein the cartridge comprises at least two welded sections, circumferential welds are present at the sections, at least one longitudinal weld is present on at least one section, and each longitudinal weld intersects the circumferential weld to form a weld intersection.
9. The use according to any one of claims 7 or 8, wherein, when detecting the weld of the cylinder, an image quality meter is arranged at the corresponding position of the inner surface of the cylinder for each weld intersection point, a longitudinal detection dark bag filled with films is laid at the corresponding position of the outer surface of the cylinder, the image quality meter of the group and the corresponding weld intersection point are all positioned in the coverage surface of the film of the group, and then irradiation and development are carried out to obtain an X-ray transillumination detection image of the weld intersection point position.
10. The use of claim 9, further comprising laying a circumferential inspection camera bag containing rectangular film, and then laying a lead plate outside the longitudinal inspection camera bag, wherein the symmetry axis of the rectangular film in the circumferential inspection camera bag along the length direction coincides with the center line of the circumferential weld; and after the longitudinal detection hidden bags and the circumferential detection hidden bags are uniformly distributed, carrying out irradiation and development, and simultaneously obtaining an X-ray transillumination detection image of the intersection point part of the welding line and an X-ray transillumination detection image of the circumferential welding line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310874329.XA CN117074441A (en) | 2023-07-17 | 2023-07-17 | X-ray transillumination detection method and application of cylinder weld joint crossing part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310874329.XA CN117074441A (en) | 2023-07-17 | 2023-07-17 | X-ray transillumination detection method and application of cylinder weld joint crossing part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117074441A true CN117074441A (en) | 2023-11-17 |
Family
ID=88708742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310874329.XA Pending CN117074441A (en) | 2023-07-17 | 2023-07-17 | X-ray transillumination detection method and application of cylinder weld joint crossing part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117074441A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119310116A (en) * | 2024-12-16 | 2025-01-14 | 上海航天设备制造总厂有限公司 | Digital imaging detection method and system for rocket tank bottom flange weld |
-
2023
- 2023-07-17 CN CN202310874329.XA patent/CN117074441A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119310116A (en) * | 2024-12-16 | 2025-01-14 | 上海航天设备制造总厂有限公司 | Digital imaging detection method and system for rocket tank bottom flange weld |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN117074441A (en) | X-ray transillumination detection method and application of cylinder weld joint crossing part | |
| CN105522266A (en) | Butt joint circular seam reverse side gas shielding device for barrel fusion welding | |
| CN101187641A (en) | Method of X-ray Inspection Using Multivariate Exposure Parameter Formula | |
| CN107068217B (en) | High temperature gas cooled reactor heat exchanger tube weld seam x-ray inspection method | |
| CN104698015A (en) | Power station boiler membrane panel welding joint blind area X ray detection method | |
| CN103411983B (en) | Plug bush type throat depth quasicompensation X-ray radiography detection method | |
| CN105397250A (en) | Automatic welding method for ring section of high temperature gas cooled nuclear reactor core vessel | |
| CN108414545B (en) | Ray detection method for BOSS welding seam of million-kilowatt nuclear power station | |
| CN209495984U (en) | Safe end weld seam ray detection is precisely focused and the device of defect location | |
| CN204479499U (en) | Pipe ring seam inspection device in a kind of aluminium oxide | |
| JP4998739B2 (en) | Method for producing ERW steel pipe with good weld toughness | |
| US20120217228A1 (en) | Coil manufacturing device and method | |
| KR20230057687A (en) | Apparatus and method for inspecting welding seam of liquefied gas storage tank | |
| CN102207471B (en) | X-ray detecting method for butt welding joint of aluminium and aluminium alloy pipes with pads | |
| CN115541625A (en) | Pipe and tube plate fillet weld ray inspection sensitivity identification piece and identification method | |
| CN208188011U (en) | Split movable cart for x-ray flaw detector | |
| CN107290357A (en) | A kind of GIS equipment X-ray detects parameter selection method | |
| US20160228989A1 (en) | Laser welding method, laser welding apparatus, and cylindrical body | |
| CN105699403A (en) | Arrangement method for detecting vertical transillumination by orientation X rays | |
| CN105675632A (en) | X-ray detection tool and detection method for detecting circumferential butt welds of pipes with diameter less than phi 377, and their application | |
| CN114076775B (en) | Pipeline weld joint ray detection geometric unclear control process | |
| CN108414540B (en) | Method for positioning defects of BOSS welding seam of million-kilowatt nuclear power station | |
| CN206684076U (en) | A kind of RT ray Non-Destructive Testing arrangements of semi-circular tube angle welding | |
| CN114131154A (en) | Welding method for low alloy steel adapter tube of reactor main equipment | |
| CN108247207A (en) | The wide weld seam welding method of heat exchanger plates |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |