CN113560812A - New manufacturing method of offshore wind power weld defect detection contrast test piece - Google Patents
New manufacturing method of offshore wind power weld defect detection contrast test piece Download PDFInfo
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- 238000012360 testing method Methods 0.000 title claims abstract description 72
- 230000007547 defect Effects 0.000 title claims abstract description 67
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 49
- 238000001514 detection method Methods 0.000 title claims abstract description 23
- 238000003466 welding Methods 0.000 claims abstract description 121
- 230000004907 flux Effects 0.000 claims abstract description 13
- 238000013461 design Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 26
- 230000000052 comparative effect Effects 0.000 claims description 26
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- 238000005520 cutting process Methods 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000004088 simulation Methods 0.000 abstract description 2
- 238000012549 training Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract 1
- 238000001035 drying Methods 0.000 description 2
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Abstract
The invention discloses a new manufacturing method of a contrast test piece for detecting welding line defects of offshore wind power, which is characterized by mainly comprising the following four steps of: (1) comparing the design of the test piece; (2) presetting weld defects; (3) manufacturing a comparison test piece; (4) and (5) manufacturing weld defects. The invention adopts the J507RH welding rod, the performance of the welding rod is consistent with that of the parent metal, the requirement required by the welding process can be met, meanwhile, the thin welding rod with the diameter of 2.6mm is adopted to manually weld at the position of the preset defect, the manufacturing and the control of the welding defect are facilitated, and the technical requirement of welding detection personnel is met; the combination of CHF101R welding flux and GHW-S3GR welding wire is adopted for filling and capping, the actual requirement of large-batch welding of offshore wind power is met, the production efficiency is improved, the quantitative and qualitative manufacture of welding line defects is realized, the requirement of a contrast test board for simulation or training of detection personnel is met, and the popularization effect is achieved.
Description
Technical Field
The invention belongs to the technical field of weld defect detection, and particularly relates to a novel manufacturing method of a contrast test piece for weld defect detection of offshore wind power.
Background
With the rapid development of the offshore wind power industry, the demands on welding detection personnel are greatly increased, and each welding detection personnel with a pure technology can not take a great deal of exercise and practice on weld defect detection. The detection of present inspection personnel to the welding seam defect generally adopts contrast test piece to accomplish the detection to the welding seam defect, and the preparation technology of contrast test piece is more complicated at present stage, and welding defect is difficult to make and control moreover, appears the deviation very easily to influence the testing result, can not satisfy welding inspection personnel's technical requirement, not only production efficiency is lower, and the popularization nature is not strong moreover, can not realize the volume production. For this reason, a new technical solution is needed to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a novel manufacturing method of a contrast test piece for detecting weld defects of offshore wind power, and aims to solve the problems of complex manufacturing process, low production efficiency and low popularization of the contrast test piece in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a new manufacturing method of a contrast test piece for detecting welding line defects of offshore wind power is characterized by comprising the following steps:
(1) design of comparative test piece: designing the geometric size of a comparison test piece according to the requirements of the wind power welding seam;
(2) presetting weld defects: presetting the position and the type of the weld defects according to the designed comparison test piece;
(3) and (3) manufacturing a comparative test piece: purchasing, blanking, grooving, numerical control edge rolling and point fixing positioning are carried out according to the step (1);
(4) manufacturing weld defects: and (4) manufacturing the weld defects of the manufactured comparative test piece according to the step (2).
In step 1, the geometric parameters of the comparative test piece include the type, thickness, width, length and pitch diameter of the material.
Further, the material adopts a DH36 steel plate, the thickness of the steel plate is 70-90mm, the width of the steel plate is 1000-3000mm, the length of the steel plate is 3000-5000mm, and the intermediate diameter of the steel plate is 5000-7000 mm.
In the step 2, the defect positions are preset on the surfaces and the inner parts of the longitudinal welding seams and the circumferential welding seams.
And 3, blanking by adopting numerical control programming.
In the step 3, cutting a groove by adopting flame cutting, wherein the groove is divided into an inner groove and an outer groove, the width of the inner groove is 48-52mm, the angle of the groove is 42-52 degrees, and the depth is 57 mm; the width of the outer groove is 30-34mm, the angle of the groove is 75-85 degrees, the depth is 18-20mm, and the middle truncated edge is 3-5 mm.
And 3, positioning the spot fixing position by welding a welding rod.
In the step 4, welding defects need to firstly adopt a welding rod with the diameter of 3.2mm and J507RH to carry out backing welding, and then adopt a welding rod with the diameter of 2.6mm and J507RH to carry out arc welding to fill the cap surface, so as to weld a preset number of welding layers.
Further, the welding parameters of the arc welding include a flux of CHF101R, GHW-S3GR, a welding wire with the diameter of 4.8mm, a current of 650-750A, a voltage of 30-36V and a welding speed of 25-30 m/h.
Further, the solder is dried at the temperature of 300-350 ℃ and is kept warm for 1-3 hours before welding.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adopts the J507RH welding rod, the performance of the welding rod is consistent with that of the base metal, the requirement required by the welding process can be met, meanwhile, the welding is manually carried out at the position with the preset defect by adopting the thin welding rod with the diameter of 2.6mm, the manufacturing and the control of the welding defect are facilitated, and the technical requirement of welding detection personnel is met.
2. The invention adopts the combination of CHF101R welding flux and GHW-S3GR welding wire to fill and cover the surface, thereby not only meeting the actual requirements of large-batch welding of offshore wind power, but also improving the production efficiency, realizing the quantitative and qualitative manufacture of welding line defects, meeting the requirements of simulation on a contrast test board or training of detection personnel, and having popularization effect.
Drawings
FIG. 1 is a front view of a weld defect layout of the present invention;
FIG. 2 is a top view of a test control specimen according to the present invention;
FIG. 3 is a schematic diagram of a rolling sample plate of a comparative test piece according to the present invention;
FIG. 4 is a schematic view showing the arrangement of cracks on the surface of a comparative test piece according to the present invention;
FIG. 5 is a schematic view showing the arrangement of cracks in the comparative test piece of the present invention.
In the figure: 1. comparing the test pieces; 2. circumferential welding seams; 3. longitudinal weld seams; 4. an outer side; 5. an inner side; 6. rolling the sample plate; 7. an inner groove; 8. an outer groove; 9. the number of layers of welding seams; 10. sixthly, seventhly, the cutter gun is heated to weld seam.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1-4, the present invention provides a technical solution: a new manufacturing method of a contrast test piece for detecting welding line defects of offshore wind power comprises the following steps:
step one, comparing the design of a test piece 1:
designing the geometric dimension of a comparative test piece 1 according to the requirements of wind power welding seams, wherein the geometric parameters are that a steel plate with the brand number of DH36 is adopted, the thickness of the steel plate is 80mm, the width of the steel plate is 2000mm, the length of the steel plate is 4000mm, and the intermediate diameter is 6000 mm;
step two, presetting the weld defects 10:
designing welding seam defects 10 of (15) 0.3, 1), (20) 0.6 and 1 and (25) 0.8) 3 on the surface of the longitudinal welding seam 3 according to the geometric parameters of the comparative test piece 1;
step three, manufacturing a comparative test piece 1:
purchasing according to the first step, wherein more materials can be purchased, the surplus can be used for standby, blanking the purchased materials through numerical control programming, and then cutting through flame to form a groove, wherein the width of the inner groove 7 is 48-52mm, the angle of the groove is 42-52 degrees, and the depth is 57 mm; the width of the outer groove 8 is 30-34mm, the groove angle is 75-85 degrees, the depth is 18-20mm, the middle truncated edge is 3-5mm, then the outer groove is rolled into a circle sample plate 6 through a numerical control lathe, and finally welding spot fixing is carried out through a welding rod to prepare a comparison test piece 1;
step four, manufacturing the weld defects 10:
manufacturing the surface weld defects 10 at the outer groove 8 of the manufactured comparative test piece 1 according to the design of the step two, firstly adopting a welding rod with the diameter of 3.2mm and J507RH to carry out backing welding, then adopting a welding rod with the diameter of 2.6mm and J507RH to carry out arc welding, setting the parameters of the arc welding as a welding flux of CHF101R, drying the welding flux at the temperature of 300 and 350 ℃ before welding, and preserving the heat for 1-3 hours, GHW-S3GR, a welding wire with the diameter of 4.8mm, a current of 650 plus 750A, a voltage of 30-36V and a welding speed of 25-30m/h are filled and covered, welding is carried out to obtain welding seam layers 9 of (15) 0.3 x 1, (20) 0.6 x 1 and (25) 0.8 x 3, welding seam defects 10 are manufactured, and finally, a detection comparison test piece 1 with (15) 0.3 x 1, (20) 0.6 x 1 and (25) 0.8 x 3 surface welding seam defects 10 is obtained.
Example 2:
referring to fig. 1-3 and 5, the present invention provides a technical solution: a new manufacturing method of a contrast test piece for detecting welding line defects of offshore wind power comprises the following steps:
step one, comparing the design of a test piece 1:
designing the geometric dimension of a comparative test piece 1 according to the requirements of wind power welding seams, wherein the geometric parameters are that a steel plate with the brand number of DH36 is adopted, the thickness of the steel plate is 80mm, the width of the steel plate is 2000mm, the length of the steel plate is 4000mm, and the intermediate diameter is 6000 mm;
step two, presetting the weld defects 10:
designing welding seam defects 10 of 15 x 0.3 x 1, 20 x 0.6 x 1 and 25 x 0.8 x 3 in the longitudinal welding seam 3 according to the geometric parameters of the comparative test piece;
step three, manufacturing a comparative test piece 1:
purchasing according to the first step, wherein more materials can be purchased, the surplus can be used for standby, blanking the purchased materials through numerical control programming, and then cutting through flame to form a groove, wherein the width of the inner groove 7 is 48-52mm, the angle of the groove is 42-52 degrees, and the depth is 57 mm; the width of the outer groove 8 is 30-34mm, the groove angle is 75-85 degrees, the depth is 18-20mm, the middle truncated edge is 3-5mm, then the outer groove is rolled into a circle sample plate 6 through a numerical control lathe, and finally welding spot fixing is carried out through a welding rod to prepare a comparison test piece 1;
step four, manufacturing the weld defects 10:
manufacturing the internal weld defects 10 at the outer groove 8 of the manufactured comparative test piece 1 according to the design of the step two, firstly adopting a welding rod with the diameter of 3.2mm and J507RH to carry out backing welding, then adopting a welding rod with the diameter of 2.6mm and J507RH to carry out arc welding, setting the parameters of the arc welding as a welding flux of CHF101R, drying the welding flux at the temperature of 300 and 350 ℃ before welding, and preserving the heat for 1-3 hours, GHW-S3GR, a welding wire with the diameter of 4.8mm, a current of 650 plus 750A, a voltage of 30-36V and a welding speed of 25-30m/h are filled, welding layers 9 of welding seam layers of (15) 0.3 1, (20) 0.6) 1, (25) 0.8 and (25) 2 to 3 are welded, and a welding seam defect 10 is manufactured, so that a comparative test piece 1 with the internal welding seam defects 10 of (15) 0.3 and (20) 0.6 and (25) 0.8 is finally obtained.
Example 3
Referring to fig. 1-5, the present invention provides a technical solution: a new manufacturing method of a contrast test piece for detecting welding line defects of offshore wind power comprises the following steps:
step one, comparing the design of a test piece 1:
designing the geometric dimension of a comparative test piece 1 according to the requirements of wind power welding seams, wherein the geometric parameters are that a steel plate with the brand number of DH36 is adopted, the thickness of the steel plate is 80mm, the width of the steel plate is 2000mm, the length of the steel plate is 4000mm, and the intermediate diameter is 6000 mm;
step two, presetting the weld defects 10:
according to the geometric parameters of the comparison test piece 1, weld defects 10 of seventy percent (25 x 2 x 3) and eighy percent (25 x 2 x 3) are designed on the surface and the inner part of one side of the circumferential weld 2;
step three, manufacturing a comparative test piece 1:
purchasing according to the first step, wherein more materials can be purchased, the surplus can be used for standby, blanking the purchased materials through numerical control programming, and then cutting through flame to form a groove, wherein the width of the inner groove 7 is 48-52mm, the angle of the groove is 42-52 degrees, and the depth is 57 mm; the width of the outer groove 8 is 30-34mm, the groove angle is 75-85 degrees, the depth is 18-20mm, the middle truncated edge is 3-5mm, then the outer groove is rolled into a circle sample plate 6 through a numerical control lathe, and finally welding spot fixing is carried out through a welding rod to prepare a comparison test piece;
step four, manufacturing the weld defects 10:
and (2) manufacturing an inner side weld defect 10 at the outer groove 8 of the manufactured comparison test piece 1 according to the design of the step two, firstly, backing welding is carried out by adopting a welding rod with the diameter of 3.2mm and J507RH, welding rod with the diameter of 2.6mm is adopted for arc welding, the parameter of the arc welding is set to be a welding flux of CHF101R, the welding flux needs to be dried and insulated for 1-3 hours at the temperature of 300-.
Example 4
Referring to fig. 1-5, the present invention provides a technical solution: a new manufacturing method of a contrast test piece for detecting welding line defects of offshore wind power comprises the following steps:
step one, comparing the design of a test piece 1:
designing the geometric dimension of a comparative test piece 1 according to the requirements of wind power welding seams, wherein the geometric parameters are that a steel plate with the brand number of DH36 is adopted, the thickness of the steel plate is 80mm, the width of the steel plate is 2000mm, the length of the steel plate is 4000mm, and the intermediate diameter is 6000 mm;
step two, presetting the weld defects 10:
designing weld defects 10 of nine 35 x 2 x 5 and 35 x 2 x 5 on the inner side and the outer side of the other side of the circumferential weld 2 according to the geometric parameters of a comparative test piece 1;
step three, manufacturing a comparative test piece 1:
purchasing according to the first step, wherein more materials can be purchased, the surplus can be used for standby, blanking the purchased materials through numerical control programming, and then cutting through flame to form a groove, wherein the width of the inner groove 7 is 48-52mm, the angle of the groove is 42-52 degrees, and the depth is 57 mm; the width of the outer groove 8 is 30-34mm, the groove angle is 75-85 degrees, the depth is 18-20mm, the middle truncated edge is 3-5mm, then the outer groove is rolled into a circle sample plate 6 through a numerical control lathe, and finally welding spot fixing is carried out through a welding rod to prepare a comparison test piece;
step four, manufacturing the weld defects 10:
according to the design of the second step, the manufactured comparative test piece 1 is manufactured with the inner side weld defects 10 at the inner groove 7, firstly welding electrodes with the diameter of 3.2mm are adopted for backing welding, then welding electrodes with the diameter of 2.6mm are adopted for arc welding with the diameter of J507RH, the parameters of the arc welding are set as a welding flux of CHF101R, the welding flux is dried and insulated for 1-3 hours at the temperature of 300-.
The following design parameter table for detecting weld defects 10 cracks of comparative test piece 1
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A new manufacturing method of a contrast test piece for detecting welding line defects of offshore wind power is characterized by comprising the following steps:
(1) design of comparative test piece: designing the geometric size of a comparison test piece according to the requirements of the wind power welding seam;
(2) presetting weld defects: presetting the position and the type of the weld defects according to the designed comparison test piece;
(3) and (3) manufacturing a comparative test piece: purchasing, blanking, grooving, numerical control edge rolling and point fixing positioning are carried out according to the step (1);
(4) manufacturing weld defects: and (4) manufacturing the weld defects of the manufactured comparative test piece according to the step (2).
2. The new manufacturing method of the offshore wind power weld defect detection contrast test piece according to claim 1, characterized in that in step 1, the geometric parameters of the contrast test piece include type, thickness, width, length and pitch diameter of the material.
3. The new manufacturing method of the offshore wind power weld defect detection contrast test piece according to claim 2, characterized in that the material is DH36 steel plate, the thickness of the steel plate is 70-90mm, the plate width of the steel plate is 3000-3000 mm, the plate length of the steel plate is 3000-5000mm, and the middle diameter of the steel plate is 5000-7000 mm.
4. The new manufacturing method of the offshore wind power weld defect detection contrast test piece according to claim 1, characterized in that in step 2, defect positions are preset on the surfaces and inside of longitudinal welds and circumferential welds.
5. The new manufacturing method of the offshore wind power weld defect detection contrast test piece according to claim 1, characterized in that in step 3, the blanking is performed by numerical control programming.
6. The new manufacturing method of the offshore wind power weld defect detection contrast test piece according to claim 1, characterized in that in step 3, the groove is cut by flame cutting, the groove is divided into an inner groove and an outer groove, the width of the inner groove is 48-52mm, the angle of the groove is 42-52 degrees, and the depth is 57 mm; the width of the outer groove is 30-34mm, the angle of the groove is 75-85 degrees, the depth is 18-20mm, and the middle truncated edge is 3-5 mm.
7. The new manufacturing method of the offshore wind power weld defect detection contrast test piece according to claim 1, characterized in that in step 3, welding rods are used for welding spot positioning in spot fixing positioning.
8. The new manufacturing method of the offshore wind power weld defect detection contrast test piece according to claim 1, characterized in that in step 4, the weld defect is firstly backing-welded by using a welding rod with a diameter of 3.2mm and J507RH, and then the cap surface is filled by using a welding rod with a diameter of 2.6mm and arc welding to obtain a preset number of weld layers.
9. The new manufacturing method of the offshore wind power weld defect detection contrast test piece as claimed in claim 8, wherein the welding parameters of the arc welding include a flux of CHF101R, GHW-S3GR, a welding wire with a diameter of 4.8mm, a current of 650 and 750A, a voltage of 30-36V, and a welding speed of 25-30 m/h.
10. The new manufacturing method of the offshore wind power weld defect detection contrast test piece according to claim 9, characterized in that the flux needs to be dried at 300-350 ℃ and insulated for 1-3 hours before welding.
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Application publication date: 20211029 |