A welding procedure qualification sampling gauge and method of sampling

Abstract

The application belongs to the technical field of welding process and relates to a welding process test sampling ruler and a sampling method thereof.The welding process test sampling ruler comprises an upper main ruler (100), a lower main ruler (200) and a middle soft ruler (300). The upper main ruler (100) comprises an upper main ruler body (101), an upper main ruler suction disc fixer (102), an upper main ruler magnetic strip (103), an upper fixed buckle groove (104), an upper fixed buckle (105) and an upper main ruler scale (106). The lower main ruler (200) comprises a lower main ruler body (201), a lower main ruler suction disc fixer (202), a lower main ruler magnetic strip (203), a lower fixed buckle groove (204), a lower fixed buckle (205) and a lower main ruler scale (206). The welding process test sampling ruler and the sampling method thereof have the advantages of simple structure, convenient use, suitability for sampling of welding test plates with various angles, prevention of inclination of positioning and marking lines during sampling, prevention of deviation of sampling positions and guarantee of accuracy of fillet welding approval tests.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of welding process, more particularly, it relates to a welding process test sampling ruler, and further relates to a sampling method of the welding process test sampling ruler. BACKGROUND

[0002] Welding is the most economical, fastest and most efficient method of permanent connection of metals. From ordinary daily metal household items to complex aerospace equipment, from small metal tools to huge skyscrapers cannot be separated from welding. Welding process evaluation test is an important method to ensure the quality of various welding products, which can be used to determine the correctness and rationality of the welding process guide book prepared for different materials and different welding methods. Through welding process evaluation test, it can be planned and purposeful to test whether the service performance of the welded joint can meet the initial design requirements, and provide reliable basis for formally establishing welding process guide book. It is an essential test for ensuring the correctness and rationality of welding process, and is also the only way to ensure the quality of welding products.

[0003] Corner welding is to weld two metals together at a certain angle, which is an important part of welding. Therefore, welding process evaluation test needs to be carried out on corner welding. Sampling needs to be carried out on the corner welding test plate, and because the corner welding test plate has a certain angle, if the sampling personnel operate improperly during sampling positioning and marking, the sampling positioning line will be inclined and deviate from the sampling position, which will eventually lead to lack of representativeness of sampling, the detection result will not be recognized, resulting in re-sampling, wasting time, and in serious cases, even a new corner welding test plate may need to be welded to start welding process evaluation test from the beginning.

[0004] In the prior art, a technology with the name of "a positioning sampling ruler" and the publication number "103743310A" is provided, which comprises a sampling mechanism, a positioning mechanism, a pull rod and a sliding piece. The end of the sampling mechanism is movably connected with the end of the positioning mechanism. One end of the pull rod is movably connected with the side edge of the sampling mechanism. The positioning mechanism is provided with a sliding groove at the other end of the positioning mechanism, which is sequentially arranged from the end of the positioning mechanism connected with the sampling mechanism. The side edge of the sliding groove is provided with a positioning scale line. The sliding piece is arranged in the sliding groove.

[0005] However, the technology does not involve the technical problems and technical solutions of the present application. SUMMARY

[0006] The technical problem to be solved by the present application is to provide a welding process test sampling ruler which is simple in structure, convenient to use, can be applied to sampling of welding test plates of various angles (corner joint welding test plates), effectively ensures that the positioning line is not inclined during sampling, prevents the sampling position from being deviated, and ensures the accuracy of corner joint welding test.

[0007] To solve the above technical problems, the technical scheme adopted by the present application is as follows:

[0008] The present application is a welding process test sampling ruler, which comprises an upper main ruler, a lower main ruler and a middle flexible ruler.

[0009] The upper main ruler comprises an upper main ruler body, an upper main ruler suction disc fixer, an upper main ruler magnetic strip, an upper fixed buckle groove, an upper fixed buckle and an upper main ruler scale.

[0010] The lower main ruler comprises a lower main ruler body, a lower main ruler suction disc fixer, a lower main ruler magnetic strip, a lower fixed buckle groove, a lower fixed buckle and a lower main ruler scale.

[0011] The upper fixed buckle groove is arranged at the right end of the upper main ruler body and is a groove.

[0012] The upper main ruler scale is arranged on both sides of the upper main ruler body, each upper main ruler body is provided with two upper main ruler scales, and the two upper main ruler scales are symmetrical with the vertical bisector of the upper main ruler body as the axis of symmetry; the lower main ruler scale is arranged on both sides of the lower main ruler body, each lower main ruler body is provided with two lower main ruler scales, and the two lower main ruler scales are symmetrical with the vertical bisector of the lower main ruler body as the axis of symmetry; the middle soft ruler scale is arranged on both sides of the middle soft ruler body, each middle soft ruler body is provided with two middle soft ruler scales, and the two middle soft ruler scales are symmetrical with the vertical bisector of the middle soft ruler body as the axis of symmetry.

[0013] The upper main ruler body is a metal strip; the lower main ruler body is a metal strip; and the middle soft ruler body is a flexible material strip.

[0014] The lower main ruler suction disc fixer is arranged below the lower main ruler body, and each lower main ruler body is provided with two lower main ruler suction disc fixers.

[0015] The upper fixed buckle hole is arranged at the left end of the middle soft ruler body, is three cuboid holes, and is matched with the upper fixed buckle; and the lower fixed buckle hole is arranged at the right end of the middle soft ruler body, is three cuboid holes, and is matched with the lower fixed buckle.

[0016] The application also relates to a sampling method of a welding process test sampling ruler which is convenient to use, can be applied to sampling of welding test plates of various angles (corner joint welding test plates), effectively ensures that positioning and marking lines are not inclined during sampling, prevents the sampling position from being deviated, and ensures corner joint welding process test.

[0017] S1. three upper fixed buckle holes on the middle soft ruler are buckled into corresponding three upper fixed buckles, three lower fixed buckle holes of the middle soft ruler scale slightly larger than the width of the corner joint welding seam surface are buckled into corresponding three lower fixed buckles, and a corner joint welding process test sampling ruler suitable for the corner joint welding test plate is formed;

[0018] S2. if the corner joint welding test plate material is steel with magnetic conductivity, the middle soft ruler part is aligned with the corner joint welding test plate welding seam to be sampled, the scale line on one side is aligned with the edge of the sampling position, the sampling point marked before alignment is aligned, the upper main ruler is adsorbed on the vertical welding test plate and is perpendicular to the welding seam of the corner joint welding test plate, the lower main ruler is adsorbed on the horizontal welding test plate and is perpendicular to the welding seam of the corner joint welding test plate, and the middle soft ruler and the welding seam are attached.

[0019] S3. If the corner joint test plate material is a metal without magnetic conductivity or with weak magnetic conductivity, align the corner joint test plate weld to be sampled of the middle flexible ruler, align the scale line on one side of the edge of the weld to be sampled, align the sampling point marked before, tightly press the upper main ruler on the vertical test plate, and make it perpendicular to the weld of the corner joint test plate, press the fixing pressure rod on the upper main ruler suction disc fixator, and make the upper main ruler suction disc fixator adsorb on the vertical test plate; then press the lower main ruler to the horizontal test plate, adjust the angle and make it perpendicular to the weld, and after the middle flexible ruler and the weld are attached, press the fixing pressure rod on the lower main ruler suction disc fixator, and make the lower main ruler suction disc fixator adsorb on the horizontal test plate.

[0020] S4. Use a paint pen or a marker to draw a sampling positioning line along the side where the upper main ruler, the lower main ruler and the middle flexible ruler are coincided with the edge of the weld to be sampled.

[0021] S5. After drawing a sampling positioning line, if the corner joint test plate is a steel with magnetic conductivity, directly take down the corner joint welding process sampling ruler with appropriate force; if the corner joint test plate is a metal without magnetic conductivity or with weak magnetic conductivity, pull up the fixing pressure rod on the upper main ruler suction disc fixator and the lower main ruler suction disc fixator 202, and then take down the corner joint welding process sampling ruler.

[0022] S6. Repeat steps 2-4 to complete all sampling positioning lines.

[0023] Before step S1, place the corner joint test plate on the test table, clean the surface of the test plate; measure the surface width of the corner joint weld, and mark the sampling point position on the position point with a paint pen or a marker; after step S5, pull down the three upper fixing buckle holes on the middle flexible ruler from the corresponding three upper fixing buckles, pull down the three lower fixing buckle holes from the corresponding three lower fixing buckles, disassemble the corner joint welding process evaluation test sampling ruler of the corner joint test plate, and then put it into the storage bag.

[0024] The technical scheme of the present application has the following working principles and beneficial effects:

[0025] The welding process test sampling ruler has the advantages of simple structure, convenient use, applicable to sampling of test plates of various angles, ensuring that the positioning line is not inclined during sampling, preventing the sampling position from deviating, and ensuring the accuracy of the corner joint welding approval test. BRIEF DESCRIPTION OF DRAWINGS

[0026] The content expressed by each drawing of the present specification and the marks in the drawings are briefly described as follows:

[0027] Figure 1 It is a structural schematic diagram of the welding process test sampling ruler.

[0028] Figure 2 Fig. 2 is a top view of the upper main ruler of the welding process test sampling ruler according to the present application;

[0029] Figure 3 Fig. 3 is a top view of the lower main ruler of the welding process test sampling ruler according to the present application;

[0030] Figure 4 Fig. 4 is a top view of the middle ruler of the welding process test sampling ruler according to the present application;

[0031] Figure 5 Fig. 5 is a bottom view of the upper main ruler of the welding process test sampling ruler according to the present application;

[0032] Figure 6 Fig. 6 is a bottom view of the lower main ruler of the welding process test sampling ruler according to the present application;

[0033] Figure 7 Fig. 7 is a structural schematic view of the welding process test sampling ruler according to the present application;

[0034] In the drawings, reference numerals are respectively: 100. upper main ruler; 200. lower main ruler; 300. middle ruler; 101. upper main ruler body; 102. upper main ruler suction cup fixer; 103. upper main ruler magnetic strip; 104. upper fixed buckle slot; 105. upper fixed buckle; 106. upper main ruler scale; 201. lower main ruler body; 202. lower main ruler suction cup fixer; 203. lower main ruler magnetic strip; 204. lower fixed buckle slot; 205. lower fixed buckle; 206. lower main ruler scale; 301. middle ruler body; 302. upper fixed buckle hole; 303. lower fixed buckle hole; 401. fixed suction cup; 402. fixer body; 403. fixed pressing rod; 500. corner joint welding test plate. DETAILED DESCRIPTION

[0035] The specific embodiments of the present application and the shapes, structures, mutual positions and connection relationships between the parts, functions and working principles of the parts involved will be further described in detail below with reference to the drawings and by describing the embodiments:

[0036] As shown in the drawings, Figure 1 - As shown in the drawings, Figure 7The application is a kind of welding process test sampling ruler, which comprises upper main ruler 100, lower main ruler 200 and middle soft ruler 300. The upper main ruler 100 comprises upper main ruler body 101, upper main ruler suction disc fixer 102, upper main ruler magnetic strip 103, upper fixed buckle slot 104, upper fixed buckle 105 and upper main ruler scale 106. The lower main ruler 200 comprises lower main ruler body 201, lower main ruler suction disc fixer 202, lower main ruler magnetic strip 203, lower fixed buckle slot 204, lower fixed buckle 205 and lower main ruler scale 206. The middle soft ruler 300 comprises middle soft ruler body 301, upper fixed buckle hole 302, lower fixed buckle hole 303 and middle soft ruler scale. The upper main ruler suction disc fixer 102 is arranged on the upper main ruler body 101, and two upper main ruler suction disc fixers 102 are arranged on each upper main ruler body 101. The upper main ruler suction disc fixer 102 is the same as the lower main ruler suction disc fixer 202, and each of them comprises fixed suction disc 401, fixer body 402 and fixed pressing rod 403. The above structure improves the prior art. The upper main ruler suction disc fixer 102 and the lower main ruler suction disc fixer 202 are respectively used for adsorbing the upper main ruler body 101 and the lower main ruler body 201 on the corner joint welding test plate 500. The fixed suction disc 401 is a cylindrical suction disc, which is preferably made of soft rubber and is used for adsorbing on the corner joint welding test plate 500. The fixer body 402 is attached to the upper main ruler body 101 and the lower main ruler body 201 on the fixed suction disc 401. The fixed pressing rod 403 is arranged on the fixer body 402, and pressing the fixed pressing rod 403 can generate pressure on the fixed suction disc 401, discharge the air in the fixed suction disc 401, and make the fixed suction disc 401 adsorb on the corner joint welding test plate 500. Pulling up the fixed pressing rod 403 can release the pressure on the fixed suction disc 401, let the air enter the fixed suction disc 401, and make the fixed suction disc 401 stop adsorbing on the corner joint welding test plate 500. When sampling, the three upper fixed buckle holes 302 on the middle soft ruler 300 are buckled into the corresponding three upper fixed buckles 105, the three lower fixed buckle holes 303 of the middle soft ruler scale slightly larger than the width of the corner joint welding seam surface are buckled into the corresponding three lower fixed buckles 205, and a corner joint welding process evaluation test sampling ruler suitable for the corner joint welding test plate 500 is formed. If the material of the corner joint welding test plate 500 is steel with magnetic conductivity, the middle soft ruler 300 is aligned with the welding seam of the corner joint welding test plate 500 to be sampled, the scale line on one side is aligned with the edge of the to-be-sampled position, the sampling point marked before alignment is aligned, the upper main ruler 100 is adsorbed on the vertical welding test plate and is perpendicular to the welding seam of the corner joint welding test plate 500, the lower main ruler 200 is adsorbed on the horizontal welding test plate and is perpendicular to the welding seam of the corner joint welding test plate 500, and the middle soft ruler 300 is attached to the welding seam.If the corner joint welding test plate 500 is made of a metal without magnetic conductivity or with weak magnetic conductivity, the welding seam of the corner joint welding test plate 500 to be sampled is aligned with the part of the middle flexible ruler 300, the scale line on one side of the corner joint welding test plate 500 is aligned with the edge of the part to be sampled, the sampling point marked before alignment is aligned, the upper main ruler 100 is tightly attached to the vertical welding test plate, and the upper main ruler 100 is perpendicular to the welding seam of the corner joint welding test plate 500, the fixing pressure rod 403 on the two upper main ruler suction disc fixers 102 is pressed down, and the upper main ruler suction disc fixer 102 is adsorbed on the vertical welding test plate; then the lower main ruler 200 is pressed to the lower part of the vertical welding test plate, the angle thereof is adjusted to be perpendicular to the welding seam, and after the middle flexible ruler 300 is attached to the welding seam, the fixing pressure rod 403 on the two lower main ruler suction disc fixers 202 is pressed down, and the lower main ruler suction disc fixer 202 is adsorbed on the vertical welding test plate. The oil paint pen or the marker is used to draw a line on the side where the upper main ruler 100, the lower main ruler 200 and the middle flexible ruler 300 coincide with the edge of the part to be sampled; after the sampling positioning line is drawn, if the corner joint welding test plate 500 is made of steel with magnetic conductivity, the corner joint welding process sampling ruler is directly taken off with appropriate force; if the corner joint welding test plate 500 is made of a metal without magnetic conductivity or with weak magnetic conductivity, the fixing pressure rod 403 on the upper main ruler suction disc fixer 102 and the lower main ruler suction disc fixer 202 is pulled up, and then the corner joint welding process sampling ruler is taken off; steps 2-4 are repeated to complete all sampling positioning lines. The welding process test sampling ruler has the advantages of simple structure, convenient use, and can be applied to sampling of welding test plates with various angles, and ensures that the positioning line is not inclined during sampling, prevents the sampling position from being deviated, and ensures the accuracy of the corner joint welding approval test.

[0037] The upper main ruler magnetic strip 103 is arranged at the bottom of the upper main ruler body 101, each upper main ruler body 101 is provided with two upper main ruler magnetic strips 103, and the upper main ruler magnetic strip 103 is symmetrical with the vertical bisector of the upper main ruler body 101 as the axis of symmetry; the upper main ruler magnetic strip 103 is arranged in a structure capable of being adsorbed on the steel corner joint welding test plate 500 with magnetic conductivity. The lower main ruler magnetic strip 203 is arranged at the bottom of the lower main ruler body 201, each lower main ruler body 201 is provided with two lower main ruler magnetic strips 203, and the lower main ruler magnetic strip 203 is symmetrical with the vertical bisector of the lower main ruler body 201 as the axis of symmetry; the lower main ruler magnetic strip 203 can be adsorbed on the steel corner joint welding test plate 500 with magnetic conductivity.

[0038] The upper fixed buckle slot 104 is arranged at the right end of the upper ruler body 101 and is a groove; the upper fixed buckle 105 is arranged in the upper fixed buckle slot 104, and each upper ruler body 101 is provided with three upper fixed buckles 105; the upper fixed buckle 105 is a cuboid, and the three upper fixed buckles 105 are equally spaced; the lower fixed buckle slot 204 is arranged at the left end of the lower ruler body 201 and is a groove; the lower fixed buckle 205 is arranged in the lower fixed buckle slot 204, and each lower ruler body 201 is provided with a plurality of lower fixed buckles 205; the lower fixed buckle 205 is a cuboid, and each lower fixed buckle 205 is equally spaced.

[0039] The upper ruler scale 106 is arranged on both sides of the upper ruler body 101, and each upper ruler body 101 is provided with two upper ruler scales 106; the two upper ruler scales 106 are symmetrical about the vertical bisector of the upper ruler body 101; the lower ruler scale 206 is arranged on both sides of the lower ruler body 201, and each lower ruler body 201 is provided with two lower ruler scales 206; the two lower ruler scales 206 are symmetrical about the vertical bisector of the lower ruler body 201; the middle flexible ruler scale is arranged on both sides of the middle flexible ruler body 301, and each middle flexible ruler body 301 is provided with two middle flexible ruler scales; the two middle flexible ruler scales are symmetrical about the vertical bisector of the middle flexible ruler body 301.

[0040] The upper ruler body 101 is a metal strip; the lower ruler body 201 is a metal strip; and the middle flexible ruler body 301 is a flexible material strip; the lower ruler suction cup fixer 202 is arranged below the lower ruler body 201, and each lower ruler body 201 is provided with two lower ruler suction cup fixers 202; the upper fixed buckle hole 302 is arranged at the left end of the middle flexible ruler body 301 and is a cuboid hole matched with the upper fixed buckle 105; and the lower fixed buckle hole 303 is arranged at the right end of the middle flexible ruler body 301 and is a cuboid hole matched with the lower fixed buckle 205.

[0041] The present application also relates to a sampling method of a welding process test sampling ruler which is convenient to use, can be applied to sampling of various angle welding test plates (corner joint welding test plates), effectively ensures that a positioning line is not inclined during sampling, prevents a sampling position from being deviated, and ensures a corner joint welding test.

[0042] S1. Select three upper fixed buckle holes 302 on the medium soft ruler 300 to be buckled into the corresponding three upper fixed buckles 105, select three lower fixed buckle holes 303 on the medium soft ruler scale slightly larger than the corner joint welding seam surface width position to be buckled into the corresponding three lower fixed buckles 205, and combine them into the corner joint welding process evaluation test sampling ruler suitable for the corner joint welding test plate 500; S2. If the corner joint welding test plate 500 is made of steel with magnetic conductivity, the corner joint welding test plate 500 is aligned with the part of the medium soft ruler 300 at the position to be sampled, the scale line on one side is aligned with the edge of the position to be sampled, the sampling point marked before alignment is aligned, the upper main ruler 100 is adsorbed on the vertical welding test plate and is perpendicular to the welding seam of the corner joint welding test plate 500, and then the lower main ruler 200 is adsorbed on the horizontal welding test plate and is perpendicular to the welding seam of the corner joint welding test plate 500, and the medium soft ruler 300 is attached to the welding seam. S3. If the corner joint welding test plate 500 is made of metal without magnetic conductivity or with weak magnetic conductivity, the corner joint welding test plate 500 is aligned with the part of the medium soft ruler 300 at the position to be sampled, the scale line on one side is aligned with the edge of the position to be sampled, the sampling point marked before alignment is aligned, the upper main ruler 100 is tightly attached to the vertical welding test plate and is perpendicular to the welding seam of the corner joint welding test plate 500, the fixed pressing rod 403 on the upper main ruler suction holder 102 is pressed down, and the upper main ruler suction holder 102 is adsorbed on the vertical welding test plate; then the lower main ruler 200 is pressed to the horizontal welding test plate, the angle is adjusted and is perpendicular to the welding seam, and after the medium soft ruler 300 is attached to the welding seam, the fixed pressing rod 403 on the lower main ruler suction holder 202 is pressed down, and the lower main ruler suction holder 202 is adsorbed on the horizontal welding test plate. S4. Use a paint pen or a marker pen to draw a sampling positioning line along the side where the upper main ruler 100, the lower main ruler 200 and the medium soft ruler 300 are coincided with the edge of the position to be sampled; S5. After drawing a sampling positioning line, if the corner joint welding test plate 500 is made of steel with magnetic conductivity, the corner joint welding process sampling ruler is directly taken down with appropriate force; if the corner joint welding test plate 500 is made of metal without magnetic conductivity or with weak magnetic conductivity, the fixed pressing rod 403 on the upper main ruler suction holder 102 and the lower main ruler suction holder 202 is pulled up, and then the corner joint welding process sampling ruler is taken down; S6. Repeat steps 2-4 to complete all sampling positioning lines.

[0043] In the sampling method of the present application, before step S1, the corner joint welding test plate 500 is placed on the test table, and the surface of the test plate is cleaned; the surface width of the corner joint welding seam is measured, and the sampling point position is marked on the position point where sampling is needed by using a paint pen or a marker pen; after step S5, the three upper fixed buckle holes 302 on the medium soft ruler 300 are pulled out from the corresponding three upper fixed buckles 105, the three lower fixed buckle holes 303 are pulled out from the corresponding three lower fixed buckles 205, the corner joint welding process evaluation test sampling ruler of the corner joint welding test plate 500 is disassembled, and then is put into the storage bag.

[0044] The application is described above with reference to the drawings, and it is obvious that the specific implementation of the application is not limited by the above manner, as long as various improvements are made by using the method concept and technical scheme of the application, or the concept and technical scheme of the application is directly applied to other occasions without improvement, which is within the protection scope of the application.

Claims

1. A weld procedure qualification sampling gage characterized by: The utility model provides a kind of steel angle welding test board, including upper main ruler (100), lower main ruler (200), middle soft ruler (300);Upper main ruler (100) includes upper main ruler body (101), upper main ruler suction cup fixer (102), upper main ruler magnetic stripe (103), upper fixed buckle slot (104), upper fixed buckle (105), upper main ruler scale (106);Lower main ruler (200) includes lower main ruler body (201), lower main ruler suction cup fixer (202), lower main ruler magnetic stripe (203), lower fixed buckle slot (204), lower fixed buckle (205), lower main ruler scale (206);Middle soft ruler (300) includes middle soft ruler body (301), upper fixed buckle hole (302), lower fixed buckle hole (303), middle soft ruler scale;Upper main ruler suction cup fixer (102) is set on upper main ruler body (101), each upper main ruler body (101) is provided with two upper main ruler suction cup fixers (102);Upper main ruler suction cup fixer (102) and lower main ruler suction cup fixer (202) are same, and upper main ruler suction cup fixer (102) and lower main ruler suction cup fixer (202) include fixed suction cup (401), fixer body (402) and fixed pressure rod (403) respectively.

2. The weld procedure test sampling gage of claim 1, wherein: The upper main ruler magnetic stripe (103) is provided at the bottom of the upper main ruler body (101), and each upper main ruler body (101) is provided with two upper main ruler magnetic stripes (103), and the upper main ruler magnetic stripe (103) is symmetrical with the vertical bisector of the upper main ruler body (101) as the axis of symmetry; The upper main ruler magnetic stripe (103) is arranged to be capable of being adsorbed on the steel angle welding test plate (500) having magnetic permeability.

3. The weld procedure test sampling gauge of claim 1 or 2, wherein: The lower main ruler magnetic stripe (203) is provided at the bottom of the lower main ruler body (201), and each lower main ruler body (201) is provided with two lower main ruler magnetic stripes (203), and the lower main ruler magnetic stripe (203) is symmetrical with the vertical bisector of the lower main ruler body (201) as the axis of symmetry; The lower main ruler magnetic stripe (203) can be adsorbed on the steel angle welding test plate (500) having magnetic permeability.

4. The weld procedure test sampling gauge of claim 1 or 2, wherein: The upper fixed buckle slot (104) is provided at the right end of the upper main ruler body (101) and is a groove; The upper fixed buckle (105) is arranged in the upper fixed buckle slot (104), and each upper main ruler body (101) is provided with three upper fixed buckles (105), and the upper fixed buckle (105) is a cuboid, and the three upper fixed buckles (105) are equally spaced; The lower fixed buckle slot (204) is provided at the left end of the lower main ruler body (201) and is a groove; The lower fixed buckle (205) is arranged in the lower fixed buckle slot (204), and each lower main ruler body (201) is provided with a plurality of lower fixed buckles (205), and the lower fixed buckle (205) is a cuboid, and each lower fixed buckle (205) is equally spaced.

5. The weld procedure test sampling gauge of claim 1 or 2, wherein: The upper main ruler scale (106) is arranged on both sides of the upper main ruler body (101), each upper main ruler body (101) is provided with two upper main ruler scales (106), and the two upper main ruler scales (106) are symmetrical with the vertical bisector of the upper main ruler body (101) as the axis of symmetry; the lower main ruler scale (206) is arranged on both sides of the lower main ruler body (201), each lower main ruler body (201) is provided with two lower main ruler scales (206), and the two lower main ruler scales (206) are symmetrical with the vertical bisector of the lower main ruler body (201) as the axis of symmetry; the middle flexible ruler scale is arranged on both sides of the middle flexible ruler body (301), each middle flexible ruler body (301) is provided with two middle flexible ruler scales, and the two middle flexible ruler scales are symmetrical with the vertical bisector of the middle flexible ruler body (301) as the axis of symmetry.

6. The weld procedure test sampling gauge of claim 1 or 2, wherein: The upper main ruler body (101) is a metal strip; the lower main ruler body (201) is a metal strip; and the middle flexible ruler body (301) is a flexible material strip.

7. The weld procedure test sampling gauge of claim 1 or 2, wherein: The lower main ruler suction disc fixer (202) is arranged below the lower main ruler body (201), and each lower main ruler body (201) is provided with two lower main ruler suction disc fixers (202).

8. The weld procedure test sampling gauge of claim 1 or 2, wherein: The upper fixed buckle hole (302) is arranged at the left end of the middle flexible ruler body (301) and is a rectangular hole matched with the upper fixed buckle (105); and the lower fixed buckle hole (303) is arranged at the right end of the middle flexible ruler body (301) and is a rectangular hole matched with the lower fixed buckle (205).

9. A method of sampling with a weld procedure qualification sampling gauge, characterized by: The sampling method of the welding process test sampling ruler comprises the following steps: S1. the three upper fixed buckle holes (302) on the middle flexible ruler (300) are buckled into the corresponding three upper fixed buckles (105), three lower fixed buckle holes (303) of the middle flexible ruler scale slightly larger than the surface width position of the fillet welding seam are selected and buckled into the corresponding three lower fixed buckles (205), and a fillet welding process evaluation test sampling ruler suitable for the fillet welding test plate (500) is combined; S2. if the material of the fillet welding test plate (500) is steel with magnetic conductivity, the middle flexible ruler (300) is aligned with the welding seam of the fillet welding test plate (500) to be sampled, the scale line on one side is aligned with the edge of the to-be-sampled position, the sampling point marked before alignment is aligned, the upper main ruler (100) is adsorbed on the vertical welding test plate and is perpendicular to the welding seam of the fillet welding test plate (500), the lower main ruler (200) is adsorbed on the horizontal welding test plate and is perpendicular to the welding seam of the fillet welding test plate (500), and the middle flexible ruler (300) is attached to the welding seam. S3. If the material of the fillet welded test plate (500) is a metal without magnetic conductivity or with weak magnetic conductivity, align the fillet welded test plate (500) at the position where the weld is to be sampled with the middle flexible ruler (300), align the scale line on one side of the middle flexible ruler (300) with the edge of the position to be sampled, align the sampling point marked before, tightly attach the upper main ruler (100) to the vertical welded test plate and make it perpendicular to the weld of the fillet welded test plate (500), press the fixing pressure rod (403) on the upper main ruler suction fixator (102) to make the upper main ruler suction fixator (102) adsorb to the vertical welded test plate; then press the lower main ruler (200) to the horizontal welded test plate, adjust the angle and make it perpendicular to the weld, and after the middle flexible ruler (300) and the weld are attached, press the fixing pressure rod (403) on the lower main ruler suction fixator (202) to make the lower main ruler suction fixator (202) adsorb to the horizontal welded test plate; S4. Use a paint pen or a marker to draw a sampling positioning line along the side where the upper main ruler (100), the lower main ruler (200) and the middle flexible ruler (300) coincide with the edge of the position to be sampled; S5. After drawing a sampling positioning line, if the fillet welded test plate (500) is a steel with magnetic conductivity, directly take down the fillet welded test plate (500) with appropriate force; if the fillet welded test plate (500) is a metal without magnetic conductivity or with weak magnetic conductivity, pull up the fixing pressure rod (403) on the upper main ruler suction fixator (102) and the lower main ruler suction fixator (202), and then take down the fillet welded test plate (500); S6. Repeat steps 2-4 to complete all sampling positioning lines.

10. The method of sampling of claim 9, wherein: Before step S1, place the fillet welded test plate (500) on the test table and clean the surface of the test plate; measure the width of the fillet welded test plate (500) and mark the sampling point position with a paint pen or a marker on the position point where sampling is needed; After step S5, pull down the three upper fixing buckle holes (302) on the middle flexible ruler (300) from the corresponding three upper fixing buckles (105), pull down the three lower fixing buckle holes (303) from the corresponding three lower fixing buckles (205), disassemble the fillet welded test plate (500), and then put it into the storage bag.

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