CN113484340B - Welding seam ray detection device and detection method - Google Patents
Welding seam ray detection device and detection method Download PDFInfo
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- CN113484340B CN113484340B CN202110651354.2A CN202110651354A CN113484340B CN 113484340 B CN113484340 B CN 113484340B CN 202110651354 A CN202110651354 A CN 202110651354A CN 113484340 B CN113484340 B CN 113484340B
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- 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
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Abstract
The invention provides a welding seam ray detection device and a detection method, and relates to the technical field of welding seam detection; the welding seam ray detection device is used for detecting the welding seam on a T-shaped component, the component comprises a web plate and a wing plate which are welded together, the device comprises a ray machine and a film fixing mechanism, wherein the ray machine is positioned on one side of the wing plate, which faces the web plate, and is arranged in a manner of deviating from the web plate; the film fixing mechanism comprises a base, a camera bag fixing piece and a camera bag; the base includes location base member and installed part, and the location base member sets up for the component is fixed, and on the installed part was located the base member, and was equipped with the installation department on the installed part, the installation department was located the one side of web back to the web on, the camera bag mounting was located on the installation department, in the camera bag was located to the film, the camera bag was located on the camera bag mounting to laminate with the pterygoid lamina. The welding seam ray detection device is strong in universality and facilitates arrangement of the hidden bags during welding seam ray detection.
Description
Technical Field
The invention relates to the technical field of weld quality detection, in particular to a weld ray detection device and a weld ray detection method.
Background
The ray detection has the advantages of visual defects, easiness in qualitative determination, convenience in archiving and the like, and is a common method for nondestructive detection of the welding line. Incident rays emitted by the ray machine penetrate through a workpiece from one side, so that a film placed on the other side is subjected to light sensing, the difference of the intensity of transmitted rays is caused by the thickness difference between a defective part and a perfect part, a blackness difference is formed on the film after treatment in a darkroom, and the generated contrast enables defects to be identified, so that the evaluation of a detected part is realized.
Ray detection in exposure, the film is placed in a dark bag; in order to reduce the unsharpness, the dark bag is tightly attached to the detected part as much as possible and is in a static state in the exposure process; when the ray detection is carried out on ferromagnetic materials such as carbon steel and the like, a magnetic paste method is generally adopted to fix the hidden bag on a workpiece to be detected; when the non-magnetic material is detected, the non-magnetic material is generally stuck to a workpiece to be detected through an adhesive tape.
At present, when radiographic inspection is carried out, arrangement of a camera bag, namely a film, is inconvenient for a welding seam of a T-shaped component.
Disclosure of Invention
In order to solve at least one of the problems mentioned in the background art, the invention provides a welding seam ray detection device and a welding seam ray detection method, so that the T-shaped joint welding seam can be conveniently subjected to ray detection.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
in a first aspect, the present invention provides a weld ray detection apparatus for detecting a weld on a T-shaped member, the member comprising a web and a wing welded together; and the welding seam ray detection device comprises:
the ray emission end of the ray machine is positioned on one side, facing the web, of the wing plate and is arranged in a manner of deviating from the web;
the film fixing mechanism comprises a base, a camera bag fixing piece and a camera bag; the base is including location base member and installed part, the location base member for the component is fixed to be set up, the installed part is located on the base member, just be equipped with the installation department on the installed part, the installation department is located the pterygoid lamina is back to back on one side of web, the camera bag mounting is located on the installation department, the film is located in the camera bag, the camera bag is located on the camera bag mounting, and with the pterygoid lamina laminating.
In one possible embodiment, the positioning base includes a fixed block having a reference surface that abuts a surface of one side of the web;
the installed part includes the connecting rod, the one end of connecting rod with the fixed block is connected, the other end of connecting rod extends to the pterygoid lamina is back to one side of web, and constitutes the installation department.
In a possible embodiment, the mounting portion is rotatably disposed on the fixed block, and the mounting portion is configured to be capable of surrounding the circumferential rotation of the fixed block.
In a possible embodiment, a threaded hole is formed in the fixing block, an external thread is formed in the connecting rod, and the external thread is in threaded connection with the threaded hole.
In a possible embodiment, the fixing block is provided with a light hole, a jackscrew hole is formed through the side wall of the light hole, and the connecting rod is rotatably inserted into the light hole.
In a possible embodiment, the bag fixing member is rotatably disposed on the mounting portion, and the mounting portion is provided with an elastic member, and the elastic member applies a pushing force to the bag fixing member, so that the bag is attached to the wing plate.
In a possible embodiment, the elastic member comprises a torsion spring, the installation portion is sleeved with the torsion spring, and the output end of the torsion spring is abutted to the concealed bag fixing member.
In a possible embodiment, the fixing device further comprises a fixing device extension, and the fixing device extension is hinged with the other end of the camera bag fixing device relative to the end of the camera bag fixing device connected with the mounting part.
In a second aspect, an embodiment of the present invention provides a welding line ray detection method, which applies the welding line ray detection apparatus described above to detect a T-shaped component, and includes the following steps:
the web plate is horizontally arranged, and the position of the film fixing mechanism is adjusted to ensure that the camera bag is attached to one surface of the wing plate, which is far away from the web plate;
the ray beam of the ray machine is obliquely emitted downwards to the welding seam between the web plate and the wing plate and forms an image on the film; wherein, the selection of the ray machine parameters comprises the following steps:
selecting a tube voltage; and determining the tube voltage of the ray machine according to the thicknesses of the web and the wing plate.
Selecting tube current and exposure time; selecting tube current and exposure time, starting an ray machine, and imaging a welding seam on a film;
judging whether the blackness of the film evaluation area meets a standard value; if the blackness of the film evaluation area is larger than the standard value, reducing the product of the tube current and the exposure time; if the blackness of the film evaluation area is smaller than the standard value, the product of the tube current and the exposure time is increased; imaging the transmission of the welding seam again according to the adjusted tube current and the exposure time, and judging the blackness of the film evaluation area; the product of the tube current and the exposure time is increased or decreased according to the blackness of the film evaluation area, and the transmission imaging is carried out on the welding seam; until the blackness of the film evaluation area meets the standard value;
obtaining a qualified film; and judging the quality of the welding seam.
In a possible embodiment, the selection of the ray machine parameters further comprises the following steps:
if the blackness of the welding seam on the upper side of the web on the film is larger than that of the welding seam on the lower side, the included angle between the ray bundle and the web is increased; if the blackness of the lower side welding seam of the upper web of the film is larger than that of the upper side welding seam, the included angle between the ray bundle and the web is reduced.
The invention provides a welding seam ray detection device and a detection method, wherein a film fixing mechanism is arranged, the film fixing mechanism comprises a base, a camera bag fixing piece and a camera bag, the base comprises a positioning base body and an installation piece, the positioning base body is fixedly arranged relative to a component, the installation piece is arranged on the base body, an installation part is arranged on the installation piece, and the installation part is arranged on one side of a wing plate back to a web plate; through setting up foretell film fixed establishment, when carrying out the ray detection to T type structure, the film of arranging that can be convenient to can have better transmission inspection effect to the welding seam that T type connects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of a welding seam ray detection device according to an embodiment of the present invention;
fig. 2 is a left side view of a welding seam ray detection device according to an embodiment of the present invention;
FIG. 3 is a top view of a welding seam radiation detection device according to an embodiment of the present invention;
FIG. 4 is an isometric view of the engagement of an extension of a fastener with a wing according to one embodiment of the invention;
FIG. 5 is a front view of a clamp according to one embodiment of the present invention;
fig. 6 is a flowchart of ray machine parameter selection according to a second embodiment of the present invention.
Description of reference numerals:
1-a building block; 11-a web; 12-a wing plate; 2-a ray emitting end; 3-a film fixing mechanism; 31-a base; 311-fixed block; 3111-base plane; 312-a mount; 4-fixing the hidden bag; 5-an elastic member; 6-fixing part extension section; 7-a clamping member; 8-image quality meter.
Detailed Description
When the ray is used for detecting a welding seam, incident rays emitted by a ray machine penetrate through a workpiece from one side, so that a film placed on the other side is subjected to light sensing, the difference of the intensity of transmitted rays is caused by the thickness difference between a defective part and a perfect part, a blackness difference is formed on the film after the treatment of a darkroom, and the generated contrast enables the defect to be identified, so that the evaluation of the detected part is realized.
Ray detection in exposure, the film is placed in a dark bag; in order to reduce the unsharpness, the dark bag is tightly attached to the detected part as much as possible and is in a static state in the exposure process; when the ray detection is carried out on ferromagnetic materials such as carbon steel and the like, the hidden bag is generally fixed on a workpiece to be detected by adopting a magnetic paste method, but the hidden bag can be used when the workpiece is made of nonmagnetic materials; when the non-magnetic material is detected, the dark bag is generally adhered to a workpiece to be detected through the adhesive tape, and when the adhesive tape is removed, the adhesive on the adhesive tape may remain on the workpiece, so that the surface of the workpiece is influenced, and the cost of the adhesive tape is increased; in addition, for a component with a T-shaped structure, for example, in a rail vehicle workpiece, an H-shaped section is formed by a web plate and wing plates welded on two opposite sides of the web plate, and a welding seam between the web plate and the wing plate on one side is a T-shaped joint welding seam.
In order to solve the above problems, embodiments of the present invention provide a welding seam ray detection apparatus and a detection method, which can conveniently arrange a camera bag and a film by providing a base independent of a workpiece, and have a better transmission inspection effect on a T-shaped joint welding seam.
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are illustrative of some, but not all embodiments of the invention. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example one
The embodiment I of the invention provides a welding seam ray detection device which is used for detecting a welding seam on a T-shaped member 1, wherein the member 1 comprises a web plate 11 and a wing plate 12 which are welded together; referring to fig. 1, the welding seam ray detection device comprises a ray machine and a film fixing mechanism 3; wherein, the ray emission end 2 of the ray machine is positioned at one side of the wing plate 12 facing the web plate 11 and is deviated from the web plate 11.
The film fixing mechanism 3 comprises a base 31, a camera bag fixing part 4 and a camera bag; the base 31 includes location base member and installed part 312, and the location base member is for the fixed setting of component 1, and installed part 312 is located on the base member, and is equipped with the installation department on the installed part 312, and the installation department is located pterygoid lamina 12 one side back to web 11, and on the installation department was located to camera bag mounting 4, the film was located in the camera bag, and the camera bag was located on camera bag mounting 4 to laminate with pterygoid lamina 12.
In this embodiment, referring to fig. 1 and 2, the positioning base includes a fixing block 311, the fixing block 311 has a reference surface 3111 attached to a surface of one side of the web 11, and the mounting member 312 includes a connecting rod, one end of which is connected to the fixing block 311, and the other end of which extends to a side of the wing plate 12 opposite to the web 11, and constitutes the mounting portion.
In this embodiment, the weight of the fixing block 311 is configured as: when the web 11 is horizontally arranged, the film fixing mechanism 3 can be kept fixed after the fixing block 311 is placed on the upper surface of the web 11; that is, the film fixing mechanism 3 can stay and be held on the upper surface of the web 11 by the self-weight of the fixing block 311 to maintain the position of the camera bag, that is, the film, with respect to the member 1.
Compared with the mode of fixing the dark bag on the workpiece by adopting magnetic attraction or an adhesive tape, the position of the dark bag is kept by the fixing block 311 independent of the member 1 and the weight of the fixing block 311, so that on one hand, the dark bag has strong universality, is not influenced by the material of the member, and cannot influence the surface of the workpiece; on the other hand, the fixing block 311 can determine the position of the welding seam by means of the reference of the welding seam, and can accurately position the dark bag when the dark bag is arranged under the condition that the welding seam is difficult to see; on the other hand, the fixing block 311 can be moved and placed quickly, thereby facilitating use.
In this embodiment, the fixing block 311 is rectangular, and the bottom surface of the fixing block 311 is attached to the upper surface of the web 11, that is, the fixing block 311 determines the position of the dark bag with reference to the upper surface of the web 11.
Since the relative position between the weld and the web 11 is constant in the T-joint construction, the width of the wing 12 may vary and the specific location of the weld is not visible from the back of the wing 12. Therefore, in the present embodiment, the fixing block 311 is disposed with the upper surface of the web 11 as a reference, so that the dark bag can be quickly and accurately disposed; and when the length of the welding seam is long and multiple transmission tests are needed, the fixing block 311 is only required to be moved to different positions on the web 11, so that the consistency of the upper position and the lower position of the dark bag and the welding seam can be well kept.
In some embodiments, the fixing block 311 may also have a cylindrical shape, or other special-shaped structure, as long as the bottom surface thereof can be attached to the upper surface of the web 11.
In the present embodiment, as shown in fig. 1 and fig. 2, the mounting piece 312 is in an inverted U shape, one end of the mounting piece is connected to the fixing block 311, and the other end extends to a surface of the wing plate 12 away from the web 11, for convenience of description, a surface of the wing plate 12 facing the web 11 is referred to as a front surface of the wing plate 12, a surface of the wing plate 12 facing away from the web 11 is referred to as a back surface of the wing plate 12, and a portion of the mounting piece 312 located at the back surface of the web 11 constitutes the mounting portion.
In some embodiments, the connection between the mounting portion and the fixing block 311 may be connected in an arc connection, an irregular connection, or other manners.
In the present embodiment, as shown in fig. 3, the above-described mounting portion is configured to be capable of circumferential rotation of the ring fixing block 311; the position of the camera bag relative to the fixing block 311 is adjusted by rotating the fixing block 311. Specifically, by rotating the mounting portion around the fixing block 311 in the circumferential direction, the distance between the camera bag and the fixing block 311 along the length direction of the welding seam can be adjusted, so as to avoid the fixing block 311 from imaging on the film, wherein the principle that the ray bundle avoids the fixing block 311 is shown by a plurality of arrows arranged in parallel in fig. 3. The solution of the present embodiment can be adapted to wings 12 of different thicknesses, compared to the pre-set of a larger distance between the camera bag holder and the holding block 311.
In this embodiment, a threaded hole is opened on the upper surface of the fixing block 311, and an external thread is configured on one end of the mounting piece 312, and the external thread is screwed with the threaded hole, so that the circumferential rotation of the mounting portion ring fixing block 311 is realized by the rotation of the external thread at the threaded hole.
In some embodiments, an unthreaded hole with a circular cross section is formed in the upper surface of the fixing block 311, a jackscrew hole is formed through the side wall of the unthreaded hole, and the end of the mounting member 312 can be inserted into the unthreaded hole with a gap; the mounting member 312 can be rotated within the unthreaded bore to adjust the mounting member 312 to a desired position when the jackscrew within the jackscrew bore is not tightened against the mounting member 312, and the mounting member 312 can be held in the desired position when the jackscrew is tightened against the mounting member 312.
In this embodiment, the bag fastener 4 is a hard plate, and the bag can be fixed on the surface of the bag fastener, as shown in fig. 2, a mounting hole is formed on one end of the bag fastener 4, the mounting hole is sleeved on the mounting portion and is in clearance fit with the mounting portion, so that the bag fastener 4 can rotate relative to the mounting portion, and the elastic member 5 is arranged on the mounting portion, and the elastic member 5 can apply a pushing force to the bag fastener 4, so that the bag can be attached to the back surface of the wing plate 12.
In this embodiment, the elastic member 5 is a torsion spring, the torsion spring is sleeved on the mounting portion, and an output end of the torsion spring is abutted to the back surface of the hidden bag fixing member 4 to apply an elastic pushing force to the hidden bag to make the hidden bag fit with the back surface of the wing plate 12.
In some embodiments, the elastic member may also be a pressing plate with one end fixed on the mounting portion and the other end abutting against the hidden bag fixing member 4, when the hidden bag fixing member 4 rotates in a direction away from the surface of the wing plate, the pressing plate can be driven to elastically deform, and the pressing plate can enable the hidden bag fixing member 4 to be attached to the back surface of the wing plate 12 through elastic recovery of the pressing plate.
In some embodiments, the camera bag holder 4 may also be fixed to the mounting portion as shown in fig. 1, for example, by providing an external thread on the mounting portion and screwing two nuts onto the external thread to fix the camera bag holder 4 to the mounting portion in such a way that the camera bag holder 4 is clamped by the two nuts, and for a better fixing effect of the camera bag holder 4, an elastic washer may be provided between each nut and the camera bag holder 4.
Compare in fixing camera bag mounting 4 on the installation department, with rotatable setting of camera bag mounting 4 on the installation department, order about its laminating with pterygoid lamina 12's surface by elastic component 5, can make camera bag mounting 4 also can be better paste tight pterygoid lamina 12 back of camera bag to better transmission detection effect has.
In some embodiments, referring to fig. 4, the welding seam ray detection device further comprises a fixing member extension 6, and the fixing member extension 6 is hinged with the other end of the camera bag fixing member 4 relative to the end connected with the mounting portion.
In this embodiment, by providing the above-mentioned extension section 6 of the fixing member, when the wing plate 12 is discontinuous, or when the back surfaces of two connected wing plates 12 are not flat, the angle between the extension section 6 of the fixing member and the darkbag fixing member 4 can be adjusted, so that the darkbag, i.e. the film, on the darkbag fixing member 4 and the extension section 6 of the fixing member can be continuously attached to the back surface of the wing plate 12.
Wherein, a structure of the hinge joint between the fixing part extension section 6 and the hidden bag fixing part 4 is: a rotating shaft is fixedly arranged at the end part of the hidden bag fixing piece 4, and a rotating shaft hole which is rotatably sleeved on the rotating shaft is arranged on the fixing piece extension section 6; obviously, it is also feasible to arrange the rotating shaft on the extension 6 of the fixing member and arrange the rotating shaft hole on the fixing member 4 of the hidden bag.
In this embodiment, referring to fig. 5, the welding seam ray detection device further includes a clamping member 7, the clamping member 7 is in an inverted U shape, and the size of the opening of the clamping member 7 is smaller than the sum of the thicknesses of the wing plate 12 and the fixing member extension 6; when the clamp 7 is clamped downward to the outer sides of the wing plate 12 and the fastener extension 6, the wing plate 12 and the fastener extension 6 can be clamped, so that the fastener extension 6 is kept attached to the back surface of the wing plate 12.
Example two
On the basis of the first embodiment, the second embodiment provides a welding line ray detection method, which can be used for detection of the welding line ray detection device, and the welding line ray detection method includes the following steps:
the web plate 11 is horizontally arranged, and the position of the film fixing mechanism 3 is adjusted to ensure that the camera bag filled with the film is attached to one surface of the wing plate 12 departing from the web plate 11;
the ray beam of the ray machine obliquely downwards irradiates to a welding seam between the web plate 11 and the wing plate 12 and forms an image on a film; as shown in fig. 6, the selection of the ray machine parameters includes the following steps:
s11: selecting a tube voltage; the tube voltage of the ray machine is determined according to the thickness of the web 11 and the wing 12.
S12: selecting tube current and exposure time; selecting tube current and exposure time, starting an ray machine, and imaging a welding seam on a film;
s13: judging whether the blackness of the film evaluation area meets a standard value; if the blackness of the film evaluation area is larger than the standard value, reducing the product of the tube current and the exposure time; if the blackness of the film evaluation area is smaller than the standard value, the product of the tube current and the exposure time is increased; imaging the transmission of the welding seam again according to the adjusted tube current and the exposure time, and judging the blackness of the film evaluation area; thirdly, performing transmission imaging on the welding seam according to the product of the tube current and the exposure time increased or decreased according to the blackness of the film evaluation area until the blackness of the film evaluation area meets a standard value;
s14: obtaining a qualified film; and judging the quality of the welding seam.
Wherein, the selection of ray machine parameters also includes the following steps:
in step S12, an included angle β between the beam and the web 11 is preset;
in the step S13, the blackness of the weld seams on the upper and lower sides of the web 11 on the film imaging is determined, and if the blackness of the weld seam on the upper side of the web 11 is greater than the blackness of the weld seam on the lower side, the included angle β between the ray and the web 11 is increased; if the blackness of the lower side weld of the web 11 is greater than that of the upper side weld, the angle β between the ray and the web 11 is reduced.
A specific implementation mode of the welding seam transmission detection method is as follows:
the orientation of the T-joint is adjusted so that the web 11 is horizontal, i.e. the plane of the web 11, which is comprised of the long sides and the wide sides, is parallel to the horizontal plane, and the plane of the wing 12, which is comprised of the long sides and the wide sides, is orthogonal to the horizontal plane.
Placing the fixed block 311 of the film fixing mechanism 3 on the upper surface of the web 11, and rotating the mounting part to make the fixed block 311 deviate from the welding seam area to be detected; the position of the fixing block 311 is adjusted to fit the camera bag with the film to the back of the wing plate 12.
Selecting the tube voltage of the ray machine according to the thicknesses of the wing plate 12 and the web plate 11, and then setting the tube current and the exposure time of the ray machine;
and (3) starting the ray machine, and as shown by an oblique arrow in fig. 1, enabling the ray emission end 2 of the ray machine to obliquely downwards irradiate the welding seams at two sides of the web 11 above the web 11, and imaging the film.
Looking up the film, and if the blackness of the film evaluation area is greater than a standard value, adjusting the product of the tube current and the exposure time; and if the blackness of the film evaluation area is less than the standard value, increasing the product of the tube current and the exposure time.
If the blackness of the upper side weld seam of the web plate 11 on the film is greater than that of the lower side weld seam, the included angle beta between the ray bundle and the web plate 11 is increased, and if the blackness of the lower side weld seam of the web plate 11 on the film is greater than that of the upper side weld seam, the included angle beta between the ray bundle and the web plate 11 is reduced.
And imaging the welding line by the ray machine again according to the adjusted parameters, checking the film, and adjusting the parameters according to the scheme until the blackness of the film evaluation area and the blackness balance of the welding lines on two sides meet the requirements.
On this basis, the embodiment provides a specific determination mode of the tube voltage, specifically, a method for increasing the tolerance to control the contrast should be adopted, that is, a larger tube voltage is adopted, and the line attenuation coefficient is reduced, so that the contrast is reduced; the standard value range of the ray energy is a higher-value tube voltage corresponding to 2.5 to 10 semivalence layers according to ASTM E94 radiographic inspection standard, for example, the semivalence layer thickness corresponding to the tube voltage of 120Kv is 2.5mm, the transillumination thickness suitable for the tube voltage is 7.5 to 25mm, the welding seam related to the invention is suitable for 7.5mm, and the blackness of an evaluation area can meet the blackness requirement of 1.8 to 4.0 by adopting the determination of smaller tube current and exposure time.
In this embodiment, in order to make the unsharpness meet the requirement of ASME volume 2, the following steps are performed, and the unsharpness value is calculated according to a formula given by the standard; corresponding to the corresponding thickness limit value; when the focal size of the ray machine is fixed, the requirements are met by increasing the focal length and controlling the distance of the film to the detected surface of the member.
In the embodiment, the minimum value of the focal length is in accordance with the standard term, and the transillumination thickness is more than 7 times; and the angle between the edge beam and the central beam cannot exceed 26.5 deg..
In the embodiment, an image quality meter with the standard number, the group number and the maximum wire number on the same side is adopted; in transmission, the image quality gauge 8 is naturally curved proximate to the weld, as shown in fig. 1, and the font is on the web 11 surface.
In the description of the embodiments of the present invention, it should be understood that the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, an indirect connection through intervening media, a connection between two elements, or an interaction between two elements, unless expressly stated or limited otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art. The terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically stated otherwise.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A welding seam ray detection device is characterized in that: for detecting a weld on a T-shaped member comprising a web and a wing welded together; and the welding seam ray detection device comprises:
the ray emitting end of the ray machine is positioned on one side, facing the web, of the wing plate and is arranged in a manner of deviating from the web;
the film fixing mechanism comprises a base, a camera bag fixing piece and a camera bag; the base comprises a positioning base body and an installation part, the positioning base body is fixedly arranged relative to the component, the installation part is arranged on the positioning base body, an installation part is arranged on the installation part, the installation part is positioned on one side of the wing plate back to the web plate, the camera bag fixing part is arranged on the installation part, the film is arranged in the camera bag, and the camera bag is arranged on the camera bag fixing part;
the positioning base body comprises a fixing block; the mounting part comprises a connecting rod, one end of the connecting rod is connected with the fixed block, and the other end of the connecting rod extends to one side, back to the web plate, of the wing plate to form the mounting part;
be equipped with the elastic component on the installation department, the elastic component is right the camera bag mounting exerts thrust, so that the camera bag with the pterygoid lamina laminating.
2. The weld seam radiation detecting apparatus according to claim 1, wherein: the fixed block is provided with a reference surface attached to the surface of one side of the web plate.
3. The weld seam radiation detecting apparatus according to claim 2, wherein: the installation department is rotatable locate on the fixed block, just the installation department configuration is to encircle the circumferential direction of fixed block.
4. The weld seam radiation detecting apparatus according to claim 3, wherein: the fixing block is provided with a threaded hole, the connecting rod is provided with an external thread, and the external thread is in threaded connection with the threaded hole.
5. The weld seam radiation detecting apparatus according to claim 3, wherein: the fixed block is provided with an unthreaded hole, the side wall penetrating through the unthreaded hole is provided with a jackscrew hole, and the connecting rod can rotatably penetrate into the unthreaded hole.
6. The weld seam radiation detecting apparatus according to claim 1, wherein: the hidden bag fixing piece is rotatably arranged on the mounting part.
7. The weld seam radiation detection apparatus according to claim 6, wherein: the elastic component comprises a torsional spring, the torsional spring sleeve is arranged on the installation part, and the output end of the torsional spring is abutted to the concealed bag fixing part.
8. The weld ray detection apparatus according to any one of claims 1 to 7, wherein: still include the mounting extension, for the camera bag mounting with the one end that the installation department is connected, the mounting extension with the other end of camera bag mounting is articulated.
9. A weld line inspection method for inspecting a T-shaped member by using the weld line inspection apparatus according to any one of claims 1 to 8, comprising the steps of:
the web plate is horizontally arranged, and the position of the film fixing mechanism is adjusted to ensure that the camera bag is attached to one surface of the wing plate, which is far away from the web plate;
the ray beam of the ray machine is obliquely emitted downwards to the welding seam between the web plate and the wing plate and forms an image on the film; wherein, the selection of the ray machine parameters comprises the following steps:
selecting a tube voltage; determining the tube voltage of the ray machine according to the thicknesses of the web plate and the wing plate;
selecting tube current and exposure time; selecting tube current and exposure time, starting an ray machine, and imaging a welding seam on a film;
judging whether the blackness of the film evaluation area meets a standard value or not; if the blackness of the film evaluation area is larger than the standard value, reducing the product of the tube current and the exposure time; if the blackness of the film evaluation area is smaller than the standard value, the product of the tube current and the exposure time is increased; imaging the transmission of the welding seam again according to the adjusted tube current and the exposure time, and judging the blackness of the film evaluation area; thirdly, according to the product of the tube current and the exposure time increased or reduced by the blackness of the film evaluation area, performing transmission imaging on the welding line until the blackness of the film evaluation area meets a standard value;
obtaining a qualified film; and judging the quality of the welding seam.
10. The weld seam radiation detection method according to claim 9, characterized in that: the selection of the ray machine parameters also comprises the following steps:
if the blackness of the welding seam on the upper side of the web on the film is larger than that of the welding seam on the lower side, the included angle between the ray bundle and the web is increased; if the blackness of the lower side welding seam of the web plate on the film is larger than that of the upper side welding seam, the included angle between the ray bundle and the web plate is reduced.
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