CN220525689U - Powder bed fused part ray detection reference block - Google Patents
Powder bed fused part ray detection reference block Download PDFInfo
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- CN220525689U CN220525689U CN202321224668.5U CN202321224668U CN220525689U CN 220525689 U CN220525689 U CN 220525689U CN 202321224668 U CN202321224668 U CN 202321224668U CN 220525689 U CN220525689 U CN 220525689U
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- 239000000843 powder Substances 0.000 title claims abstract description 47
- 238000001514 detection method Methods 0.000 title abstract description 20
- 230000007547 defect Effects 0.000 claims abstract description 79
- 238000012360 testing method Methods 0.000 claims abstract description 67
- 230000004927 fusion Effects 0.000 claims abstract description 33
- 239000011159 matrix material Substances 0.000 claims abstract description 28
- 238000007689 inspection Methods 0.000 claims abstract description 19
- 230000002950 deficient Effects 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- WAIPAZQMEIHHTJ-UHFFFAOYSA-N [Cr].[Co] Chemical class [Cr].[Co] WAIPAZQMEIHHTJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims 2
- 238000002844 melting Methods 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 8
- 230000005855 radiation Effects 0.000 abstract description 7
- 239000011148 porous material Substances 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000009659 non-destructive testing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model discloses a powder bed fusion product radiographic inspection reference block. The reference block includes: the test block comprises a step structure test block matrix, a first defect unit and a second defect unit; the first defect unit and the second defect unit are arranged in each step of the step structure test block matrix at a certain distance; the first defective cell includes at least one flat bottom hole subunit; the second defective cell includes at least one spherical defective subunit. The reference block has a simple structure and is convenient to use, the defect detection capability of a radiation detection method on a powder bed fusion workpiece can be verified through the defect units arranged on the step structure block substrate, meanwhile, the influence of the pore of the powder bed fusion workpiece and the influence of unmelted metal powder in unmelted defects on radiation detection sensitivity and defect identification can be determined, and the reliability of the radiation detection result of the powder bed fusion workpiece can be improved and the method is used for defect assessment.
Description
Technical Field
The utility model belongs to the technical field of nondestructive testing, and particularly relates to a powder bed fusion product radiographic testing reference block for nondestructive testing of aircraft structural materials.
Background
The metal additive manufacturing technology has wide application prospect in the aspects of light weight, cost reduction, efficiency enhancement and integral manufacturing of complex parts difficult to process of an aircraft structure. The powder bed fusion process uses point-by-point fusion, line-by-line lapping and layer-by-layer stacking of materials to make metal parts, which is essentially different from conventional subtractive or equi-dimensional manufacturing methods. Because of the discontinuous and unstable raw material characteristics, main process parameters, forming chamber environment and other factors in the forming process, metallurgical defects such as air holes, unfused, cracks, inclusions and the like can exist in the fused part of the powder bed. Compared with the traditional castings or forgings, the defect forms in the powder bed fusion products have the characteristics of global distribution, various forms, large size span, complex forming mechanism and the like. Unfused defects between cladding layers or cladding channels of powder bed fusion articles often present partially melted or unmelted particles of metal powder within the unfused pores, and this defective form of the internal metal-containing powder presents a significant challenge for non-destructive inspection and defect assessment of the powder bed fusion article.
The existing conventional X-ray detection and industrial CT detection technology can effectively detect internal defects of castings, forgings and welding pieces, but the defects are generally difficult to accurately and reliably identify and evaluate in the aspect of unfused defect detection of powder bed fusion workpieces, and particularly in the case of acute angle areas inside unfused pores and metal-containing powder, the actual shapes and sizes of the defects are often difficult to accurately judge. In the nondestructive testing and evaluation engineering application of the material-increasing workpiece, development of a reference block suitable for the ray detection of the powder bed fusion workpiece is needed by combining specific defect characteristics and a ray detection principle, and the reference block is used for verifying the defect detection capability of a ray detection method on the powder bed fusion workpiece, improving the reliability of the ray detection result of the powder bed fusion workpiece and assisting in defect evaluation.
Disclosure of Invention
The utility model discloses a radiographic inspection reference block for a powder bed fusion product, which aims to solve any one of the above and other potential problems in the prior art.
In order to solve the problems, the technical scheme of the utility model is as follows: a powder bed fused article radiographic inspection reference block, the reference block comprising: the test block comprises a step structure test block matrix, a first defect unit and a second defect unit;
the first defect unit and the second defect unit are arranged in each step of the step structure test block matrix at a certain distance;
wherein the first defective cell comprises at least one flat bottom hole subunit;
the second defective cell includes at least one spherical defective subunit.
Further, the step structure test block matrix comprises a plurality of test block matrix units with different heights;
the test block matrix units with different heights are sequentially arranged from high to low to form a step structure, and the step heights K between steps of each level are equal.
Further, the flat bottom hole subunit is of a cylindrical hollow structure, the flat bottom hole subunit is arranged in a vertical mode, one end of the flat bottom hole subunit is positioned on the lower surface of the test block base body unit, the end of the flat bottom hole subunit is externally opened, and the other end of the flat bottom hole subunit is a sealed end and is positioned inside the test block base body unit.
Further, the spherical defect subunit has a spherical structure containing unmelted metal powder;
the spherical defect subunit is encapsulated by the test block base unit.
Further, the number of flat bottom hole subunits and spherical defect subunits with different diameters arranged in each test block matrix unit is equal.
Further, the flat bottom hole subunits with different diameters arranged in each test block matrix unit are arranged in a row at equal intervals;
the spherical defect subunits with different diameters are arranged in rows at equal intervals and are arranged in rows at equal intervals;
and the flat bottom hole subunits and the spherical defect subunits with the same diameter are equidistantly arranged in columns.
And the distances from the center line of the flat bottom hole subunit to the left and right side edges of the test block matrix unit are equal to the distance from the center point of the spherical defect subunit.
Further, the diameter L and the height H of the flat bottom hole subunit on each of the test block base units are the same as the diameter D of the spherical defect subunit.
Further, the diameters L and the heights H of all the flat bottom hole subunits in all the test block matrix units are the same;
the diameter D of the spherical defect subunits within all of the matrix units is the same.
Further, the step surface of each of the test block base units is rectangular in shape, and the step surfaces of each of the test block base units are equal in size.
Further, the material of the step structure test block matrix is titanium alloy, aluminum alloy, nickel-based alloy, cobalt-chromium alloy or stainless steel.
The beneficial effects of the utility model are as follows: by adopting the technical scheme, the reference block can effectively simulate the pore and unfused defects of the powder bed fusion workpiece, can be used for a contrast test of the thickness sensitivity of the powder bed fusion workpiece by a radiation detection method, can be used for manufacturing a radiation detection exposure curve, can be used for verifying the defect detection capability of the radiation detection process on the specific size flat bottom hole and the spherical defect detail of the powder bed fusion workpiece under different wall thicknesses, and can be used for verifying the defect detection capability of the radiation detection process on the different size flat bottom hole and the spherical defect detail of the powder bed fusion workpiece under the same wall thickness.
By adopting the reference block, the identifiable flat bottom hole and spherical defect details are analyzed through comparing the radiographic inspection images of the flat bottom holes and spherical defects with the same size of the defect units, and the method can be used for determining the influence of the powder bed fusion workpiece pores and the internal unmelted or partial unmelted metal powder of the unmelted defects on radiographic inspection sensitivity and defect identification, thereby being beneficial to improving the reliability of radiographic inspection results of the powder bed fusion workpiece and assisting in defect assessment.
Drawings
FIG. 1 is a schematic diagram showing the structural composition of a reference block according to an embodiment of the present utility model.
Fig. 2 is a schematic top view of a reference block according to an embodiment of the present utility model.
FIG. 3 is a schematic side view of a reference block according to one embodiment of the present utility model.
In the figure:
1. a test block matrix with a ladder structure; 1-1, a test block matrix unit; 2. a first defective cell; 2-1. Flat bottom hole subunits; 2-10, a first flat bottom hole; 2-11, a second flat bottom hole; 2-12. A third flat bottom hole subunit; 3. a second defective cell, 3-1. A spherical defective subunit; 3-10, a first spherical defect; 3-11. A second spherical defect; and 3-12. Third spherical defect.
The specific embodiment is as follows:
the technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.
As shown in fig. 1, a reference block for radiographic inspection of a powder bed fusion product according to the present utility model comprises: a step structure test block matrix 1, a first defect unit 2 and a second defect unit 3;
the first defect unit 2 and the second defect unit 3 are arranged in each step of the step structure test block matrix 1 at a certain distance;
wherein the first defective cell 2 comprises at least one flat bottom hole subunit 2-1;
the second defective cell 3 comprises at least one spherical defective subunit 3-1.
The test block matrix 1 with the ladder structure comprises a plurality of test block matrix units 1-1 with different heights;
the test block base body units 1-1 with different heights are sequentially arranged from high to low to form a step structure, and the step heights K between steps of each level are equal.
The flat bottom hole subunit 2-1 is of a cylindrical hollow structure, the flat bottom hole subunit 2-1 is arranged in a vertical mode, one end of the flat bottom hole subunit is positioned on the lower surface of the test block base body unit, the end of the flat bottom hole subunit is externally opened, the other end of the flat bottom hole subunit is a sealed end, and the flat bottom hole subunit is positioned inside the test block base body unit 1-1.
The spherical defect subunit 3-1 has a spherical structure containing unmelted metal powder;
in one possible embodiment, each of the test block base units 1-1 is provided with an equal number of the flat bottom hole subunits 2-1 and the spherical defect subunits 3-1.
The step surface of each test block base unit 1-1 is rectangular (for example, square), and the step surface of each test block base unit 1-1 is equal in size; the test block base body units 1-1 with different heights are sequentially arranged from high to low, and the step heights of all stages of steps are equal (for example, the step heights are 5.0 mm); the number and thickness of the steps of the step structure test block matrix 1 are used to cover the whole thickness range of the powder bed fusion product (for example, the test block matrix is provided with three steps, the thickness of the steps can cover 5.0mm, 10mm and 15mm, and the thickness range of the powder bed fusion product can cover 5.0mm to 15 mm).
In specific implementation, the material of the step structure test block matrix 1 is titanium alloy, aluminum alloy, nickel-based alloy, cobalt-chromium alloy or stainless steel, and when in use, the material of the step structure test block matrix 1 is identical or similar to that of a powder bed fusion workpiece.
In specific implementation, the flat bottom hole subunit 2-1 is vertically arranged, one end of the flat bottom hole subunit 2-1 is positioned on the lower surface of the test block base unit 1-1, the end of the flat bottom hole subunit is externally opened, and the other end of the flat bottom hole subunit is a sealed end and is positioned in the test block base unit 1-1; the flat bottom hole sub-units 2-1 in the test block base units 1-1 of different heights have the same diameter and height (for example, the cylindrical hollow structures of the first flat bottom hole 2-10, the second flat bottom hole 2-11 and the third flat bottom hole 2-12 in each of the test block base units 1-1 have the dimensions of 0.5mm in diameter and 0.5mm in height).
In practice, the spherical defect subunit 3-1 is coated by the test block base unit 1-1, and is located near the lower surface of the test block base unit 1-1 (for example, the distance from the spherical defect subunit 3-1 to the lower surface of the test block base unit 1-1 is 2.0 mm); the diameters of the ball-shaped defect sub-units 3-1 in the test block base units 1-1 of different heights are the same (for example, the diameter size of the ball-shaped structures of the first ball-shaped defect 3-10, the second ball-shaped defect 3-11 and the third ball-shaped defect 3-12 in each of the test block base units 1-1 is 0.5 mm).
In practice, the flat bottom hole sub-units 2-1 and the spherical defect sub-units 3-1 on each of the test block base units 1-1 have the same diameter (for example, the diameter sizes of the first flat bottom holes 2-10 and the first spherical defects 3-10 are all 0.5 mm), and the height of the flat bottom hole sub-units 2-1 is the same as the diameter of the spherical defect sub-units 3-1 (for example, the cylindrical hollow structure height of the first flat bottom holes 2-10 and the diameter size of the first spherical defects 3-10 are all 0.5 mm).
Referring to fig. 2, an example of the present utility model is a schematic top view of a test block, in one possible embodiment, the step structure test block base 1 has a length of 180mm and a width of 60mm, and each test block base unit 1-1 has a length of 60mm and a width of 60mm. Each test block base unit 1-1 is provided with a flat bottom hole subunit 2-1 and a spherical defect subunit 3-1 with the same diameter, the distances between the flat bottom hole subunit 2-1 and the spherical defect subunit 3-1 in the length direction and the width direction of each test block base unit 1-1 are equal to 20mm, and the distances between the flat bottom hole subunit 2-1 on each test block base unit 1-1 and the spherical defect subunit 3-1 to the outer side edge of each test block base unit 1-1 are equal to 20mm.
Referring to fig. 3, an example of the present utility model is a schematic side view of a reference block provided with three steps in one possible implementation, the block base unit 1-1 being 5.0mm, 10mm and 15mm thick; the step height of the test block base unit 1-1 is 5.0mm, and the length and width of the step surface of the step are 60mm; the diameter of the flat bottom hole subunit 2-1 is 0.5mm and the height is 0.5mm; the diameter of the spherical defect subunit 3-1 is 0.5mm, and the distance from the spherical defect subunit 3-1 to the lower surface of the test block base unit 1-1 is 2.0mm.
The above description of embodiments is only for aiding in understanding the method of the present application and its core ideas; meanwhile, as those skilled in the art will have modifications in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.
Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As referred to throughout the specification and claims, the terms "comprising," including, "and" includes "are intended to be interpreted as" including/comprising, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art is able to solve the technical problem within a preset error range, substantially achieving the technical effect. The description hereinafter sets forth the preferred embodiment for carrying out the present application, but is not intended to limit the scope of the present application in general, for the purpose of illustrating the general principles of the present application. The scope of the present application is defined by the appended claims.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a commodity or system comprising such elements.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
While the foregoing description illustrates and describes the preferred embodiments of the present application, it is to be understood that this application is not limited to the forms disclosed herein, but is not to be construed as an exclusive use of other embodiments, and is capable of many other combinations, modifications and environments, and adaptations within the scope of the teachings described herein, through the foregoing teachings or through the knowledge or skills of the relevant art. And that modifications and variations which do not depart from the spirit and scope of the present utility model are intended to be within the scope of the appended claims.
Claims (10)
1. The utility model provides a powder bed melting finished piece radiographic inspection reference block which characterized in that, the reference block of powder bed melting finished piece radiographic inspection includes: the test block comprises a step structure test block matrix, a first defect unit and a second defect unit;
the first defect unit and the second defect unit are arranged in each step of the step structure test block matrix at a certain distance;
wherein the first defective cell comprises at least one flat bottom hole subunit;
the second defective cell includes at least one spherical defective subunit.
2. The powder bed fusion article radiographic inspection reference block of claim 1, wherein the step structure block base comprises a plurality of block base units of different heights;
the test block matrix units with different heights are sequentially arranged from high to low to form a step structure, and the step heights K between steps of each level are equal.
3. The powder bed fusion article radiographic inspection reference block according to claim 2, wherein the flat bottom hole sub-unit is a cylindrical hollow structure, and the flat bottom hole sub-unit is arranged in a vertical manner, one end of the flat bottom hole sub-unit is located on the lower surface of the block base unit, the end of the flat bottom hole sub-unit is open to the outside, and the other end of the flat bottom hole sub-unit is a sealed end and located inside the block base unit.
4. The powder bed fusion article radiographic inspection reference block of claim 2, wherein the spherical defect subunits are spherical structures containing unmelted metal powder;
the spherical defect subunit is encapsulated by the test block base unit.
5. The powder bed fusion article radiographic inspection reference block of claim 2, wherein the number of different diameter flat bottom hole subunits and spherical defect subunits disposed within each block base unit is equal.
6. The powder bed fusion article radiographic inspection reference block of claim 5, wherein said flat bottom hole sub-units of different diameters disposed within each block base unit are disposed in equidistant rows;
the spherical defect subunits with different diameters are arranged in rows at equal intervals and are arranged in rows at equal intervals;
and the flat bottom hole subunits and the spherical defect subunits with the same diameter are arranged in a column equidistant manner;
and the distances from the center line of the flat bottom hole subunit to the left and right side edges of the test block matrix unit are equal to the distance from the center point of the spherical defect subunit.
7. A powder bed fusion article radiographic inspection reference block according to claim 3, where the diameter L and height H of the flat bottom hole sub-units on each block base unit are the same as the diameter D of the spherical defect sub-units.
8. A powder bed fusion article radiographic inspection reference block according to claim 3, where the diameter L and height H of all flat bottom hole sub-units within all block base units are the same;
the diameter D of the spherical defect subunits within all of the matrix units is the same.
9. The powder bed fusion article radiographic inspection reference test block of claim 2, wherein the step face shape of each of the test block base units is rectangular and the step face dimensions of each of the test block base units are equal.
10. The powder bed fusion article radiographic inspection reference block according to claim 2, wherein the step structure block base is made of titanium alloy, aluminum alloy, nickel-based alloy, cobalt-chromium alloy or stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321224668.5U CN220525689U (en) | 2023-05-19 | 2023-05-19 | Powder bed fused part ray detection reference block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321224668.5U CN220525689U (en) | 2023-05-19 | 2023-05-19 | Powder bed fused part ray detection reference block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220525689U true CN220525689U (en) | 2024-02-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321224668.5U Active CN220525689U (en) | 2023-05-19 | 2023-05-19 | Powder bed fused part ray detection reference block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220525689U (en) |
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2023
- 2023-05-19 CN CN202321224668.5U patent/CN220525689U/en active Active
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