CN117532150A - Composite member and method for processing same - Google Patents
Composite member and method for processing same Download PDFInfo
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- CN117532150A CN117532150A CN202311533876.8A CN202311533876A CN117532150A CN 117532150 A CN117532150 A CN 117532150A CN 202311533876 A CN202311533876 A CN 202311533876A CN 117532150 A CN117532150 A CN 117532150A
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- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims description 29
- 238000012545 processing Methods 0.000 title claims description 11
- 239000000463 material Substances 0.000 claims abstract description 37
- 238000010146 3D printing Methods 0.000 claims abstract description 20
- 238000005516 engineering process Methods 0.000 claims abstract description 12
- 238000003672 processing method Methods 0.000 claims abstract description 11
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims description 37
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 20
- 229910052719 titanium Inorganic materials 0.000 claims description 20
- 239000010936 titanium Substances 0.000 claims description 20
- 229910052782 aluminium Inorganic materials 0.000 claims description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 18
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- 238000010030 laminating Methods 0.000 abstract 1
- 239000000758 substrate Substances 0.000 description 9
- 238000007789 sealing Methods 0.000 description 8
- 238000003801 milling Methods 0.000 description 7
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000004927 fusion Effects 0.000 description 3
- 238000010309 melting process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The application provides a composite member and a processing method thereof, the composite member including a first member and a second member formed by laminating different materials, the processing method including: forming a first hole through the first member, a portion of the second member being exposed to the first hole; filling the material of the second member in the first hole by using a laser 3D printing technology to form a filling block, wherein the filling block is connected with the part of the second member exposed to the first hole; and a second hole penetrating through the filling block is formed, the inner wall of the second hole is made of the same material as the second member, and the second hole also extends to the second member connected with the filling block. The processing method provided by the application can improve the connection strength and the combination tightness between the filling block and the first component, and is also suitable for composite components with different thicknesses.
Description
Technical Field
The application relates to the technical field of sealing, in particular to a composite component and a processing method thereof.
Background
In the related art, some composite members are formed by combining members of two or more different materials. When the composite member is applied to a 3C product, holes penetrating through different members need to be opened in the composite member in order to assemble the composite member to the product by fasteners or other parts. However, the hole wall can generate gaps at the connecting positions of different components, and the gaps are exposed to the outside and are easy to corrode, so that the problem of poor sealing exists.
Disclosure of Invention
In view of the above, the present application provides a composite member and a processing method thereof, which are used for solving the above problems.
The present application provides a method of processing a composite member including a first member and a second member formed of different material layers, the method comprising: forming a first hole through the first member, a portion of the second member being exposed to the first hole; filling the material of the second member in the first hole by using a laser 3D printing technology to form a filling block, wherein the filling block is connected with the part of the second member exposed to the first hole; and a second hole penetrating through the filling block is formed, the inner wall of the second hole is made of the same material as the second member, and the second hole also extends to the second member connected with the filling block.
In some embodiments, the first hole also extends to the second member when the first hole is opened, the first hole having a depth greater than a thickness of the first member.
In some embodiments, a bevel is connected between the inner wall and the bottom wall of the first hole of the second member, the bevel being connected obliquely between the inner wall and the bottom wall of the first hole.
In some embodiments, the first hole in the second member has a depth h of 0.1 mm.ltoreq.h.ltoreq.0.5 mm.
In some embodiments, the filling block includes a plurality of unit layers disposed along an axial direction of the first hole, and in laser 3D printing, laser burns the base material along a path set in a radial direction of the first hole to obtain a unit layer, and a plurality of unit layers are stacked along the axial direction of the first hole to form the filling block.
In some embodiments, upon laser 3D printing, along the axis of the first hole, the laser moves away from the second member and burns the substrate to obtain the filler mass.
In some embodiments, the angle formed between the inner wall of the first aperture and the bottom wall of the first aperture is θ, θ being greater than or equal to 90 °.
In some embodiments, the filling block is arranged at the height H of the second component in a protruding way 1 The thickness of the first component is H 2 ，H 1 ≥(0.5-1)·H 2 The method comprises the steps of carrying out a first treatment on the surface of the After the second hole is formed, the wall thickness of the filling block is more than or equal to 0.5mm.
The application also provides a composite component prepared by the processing method.
In some embodiments, the material of the first member is aluminum or an aluminum alloy and the material of the second member is titanium or a titanium alloy.
In this application, adopt laser 3D printing technique, fill the filler block the same with second component material in first hole, the filler block melts the fusion with the inner wall in second component and first hole and combines for first hole is by the filler block cladding, and the filler block can wrap up the bonding line of first component and second component in first hole department completely, makes the bonding line can keep apart with the external world, thereby improves the leakproofness of bonding line. Meanwhile, a second hole penetrating through the filling block is formed, so that subsequent processing and assembly are facilitated. In the processing method of the composite member, when the composite member is processed by adopting a laser 3D printing technology, the surface of the second member exposed to the first hole is melted in the laser melting process, so that the second member and the filling block of the same material are fully combined together, the connection strength between the second member and the filling block is improved, and in the melting process, the wall of the filling block and the wall of the first hole are melted and tightly combined, so that the connection strength and the combination tightness between the filling block and the first member are improved. The processing method is suitable for composite components with different thicknesses, is also suitable for different shapes of the first holes, is high in universality, and can adjust the height and the wall thickness of the filling block according to requirements so as to meet different requirements.
Drawings
Fig. 1 is a cross-sectional view of a composite member according to an embodiment of the present application.
Fig. 2 is a top view of a first component of the composite component shown in fig. 1 in some embodiments.
Fig. 3 is a top view of a first component of the composite component shown in fig. 1 in alternative embodiments.
Fig. 4 is a cross-sectional view of a composite member provided in accordance with another embodiment of the present application.
Fig. 5 is a cross-sectional view of a composite member provided in accordance with another embodiment of the present application.
Fig. 6 is a cross-sectional view of a composite member provided in accordance with another embodiment of the present application.
Fig. 7 is a cross-sectional view of the first member after a first hole is formed therein in an embodiment of the present application.
Fig. 8 is a cross-sectional view of the first hole shown in fig. 7 after the filling block is provided therein.
Fig. 9 is a cross-sectional view of the first member shown in fig. 7 after a first hole is formed therein in another embodiment.
Fig. 10 is a cross-sectional view of the filler block shown in fig. 1 after providing a groove.
FIG. 11a is a cross-sectional view of a filler piece filling a first hole in an aluminum member in accordance with the first embodiment; fig. 11b is a cross-sectional view of the filler block of fig. 11a after processing.
FIG. 12a is a cross-sectional view of a filler piece filling a first hole in an aluminum member in a second embodiment; fig. 12b is a cross-sectional view of the filler block of fig. 12a, after being processed to form a plurality of second holes.
Description of the main reference signs
Composite member 100, 100
First component 10
First holes 11, 11
Bevel 12
First groove 13
Second component 20
Second grooves 21, 21
Bonding surface 30
Bond line 31, 31
Filling blocks 40, 40
Second holes 41, 41
Aluminum member 60
Titanium member 70
First direction X
Second direction Y
Third direction Z
The following detailed description will further illustrate the present application in conjunction with the above-described figures 1-12.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
In order to further describe the technical means and effects adopted to achieve the preset purpose of the present application, the following detailed description is made in connection with the accompanying drawings and embodiments.
Referring to fig. 1, an embodiment of the present application provides a method for processing a composite member 100, where the composite member 100 includes a first member 10 and a second member 20 formed by stacking different materials along a first direction X, and a bonding surface 30 is formed between the first member 10 and the second member 20. Wherein the first member 10 is a metal material or a non-metal material, for example, the metal material may be iron, copper, magnesium, titanium, aluminum, iron alloy, magnesium alloy, titanium alloy, aluminum alloy, stainless steel, or the like; the nonmetallic material can be plastic, rubber or ceramic, etc. The second member 20 may be any one of the above-mentioned metallic materials or any one of nonmetallic materials, but the materials of the first member 10 and the second member 20 are different.
The first member 10 and the second member 20 form a bonding line 31 at the bonding surface 30. The bonding line 31 may have a circular, oval, square, polygonal or other shape. The first member 10 is provided with first holes 11, and the number of the first holes 11 may be one. As shown in fig. 2 and 3, the number of the first holes 11 may be plural, and the shape of each first hole 11 may be set according to actual needs. The shape of the first hole 11 may be wavy, cross-shaped or heart-shaped as shown in fig. 2, or may be irregular, as viewed in the first direction X. The plurality of first holes 11 may have the same shape as shown in fig. 3, but the inner diameters of the plurality of first holes 11 are different, as viewed from the first direction X.
Referring to fig. 1, a portion of the surface of the second member 20 is exposed to the first hole 11. A filling block 40 is further provided in the first hole 11 of the first member 10, and the filling block 40 is coupled to the inner wall of the first hole 11. The filling block 40 is formed by extending the surface of the second member 20 exposed to the first hole 11 and wraps the bonding line 31 and the inner wall of the first hole 11, and the inner wall of the first hole 11 is wrapped, so that the stability of the inner wall of the first hole 11 is improved; the bonding wire 31 and the inner wall of the first hole 11 are shielded by the filling block 40, so that the bonding wire 31 can be isolated from the outside, corrosion or air leakage at the bonding wire 31 is avoided, and the sealing performance of the bonding wire 31 is improved. The filling block 40 is obtained by a laser 3D printing technology and is fused and combined with the second member 20, and by adopting the technology, filling blocks 40 with different shapes and heights can be obtained, so that the applicability is high.
Along the first direction X, the filling block 40 is provided with a second hole 41 penetrating the filling block 40, and the second hole 41 may extend to the second member 20 connected to the filling block 40. The second hole 41 may extend through the second member 20 (see fig. 1), and the second hole 41 may be a blind hole (see fig. 4), and both structures may be used to mount the composite member 100 to a product by mounting fasteners (e.g., screws, bolts, etc.) in the second hole 41.
The material of the filler 40 is the same as that of the second member 20, and when the filler 40 and the second member 20 are bonded by the laser 3D printing technique, the same material can further improve the bonding strength of the filler 40 and the second member 20. The outer contour of the filling block 40 matches the shape of the inner wall of the first hole 11, as seen in the first direction X. In some embodiments, the outer contour of the filler block 40 is circular, square, or polygonal.
The material of the inner wall of the second hole 41 is the same as that of the second member 20, so that the composite member 100 is subjected to surface treatment (such as an anodic treatment process) later, so that the same film is formed on the inner wall of the second hole 41 and the second member 20, and the film has the same thickness and is not easy to crack.
Referring to fig. 5, in other embodiments, the end of the filling block 40 away from the second member 20 and the inner wall of the first hole 11 further form a first groove 13, the first groove 13 communicates with the second hole 41, and the first groove 13 is configured to provide a space for avoiding the fastener, so as to facilitate improving the flatness of the surface of the first member 10.
In some embodiments, the surface of the second member 20 remote from the first member 10 is recessed to form a second recess 21, the second recess 21 being in communication with the second aperture 41, the second recess 21 being disposed opposite the first recess 13. The fastener may be passed through the first recess 13, the second hole 41 and the second recess 21 to fasten the first member 10 and the second member 20, the second recess 21 providing a relief space for the fastener.
Referring to fig. 6, in another embodiment, the first groove 13 is located on the filling block 40, and may be formed by recessing the inner wall of the second hole 41 and communicate with the second hole 41. By the arrangement, the inner wall of the first member 10 in the first hole 11 is always covered by the filling block 40 and fully combined with the filling block, so that the combination area of the filling block 40 and the first member 10 can be increased to a certain extent, and the combination strength of the filling block and the first member is further improved.
Referring to fig. 1, 7-9, the present application further provides a method for processing a composite member 100, wherein the composite member 100 includes a first member 10 and a second member 20 formed by stacking different materials, and the method includes the steps of:
s1, referring to FIG. 7, a first hole 11 is formed in the first member 10, and a portion of the second member 20 is exposed to the first hole 11.
The bonding surface 30 of the first member 10 and the second member 20 forms a bonding line 31 at the first hole 11.
In some embodiments, the angle formed between the inner wall of the first bore 11 and the bottom wall of the first bore 11 is θ, θ being greater than or equal to 90 °. The arrangement is favorable for the laser to irradiate the bottom wall of the first hole 11 in the subsequent laser sintering process, and is more favorable for laser sintering and melting the base material. In some embodiments, θ is 90 °, 100 °, 110 °, 120 °, or 130 °.
In some embodiments, the depth of the first hole 11 is less than 6mm, avoiding the disadvantages of working when the depth of the first hole 11 is too great.
S2, referring to FIG. 8, a filling block 40 is formed in the first hole 11 by using a laser 3D printing technology, the filling block 40 is connected with the second member 20 exposed to the first hole 11, and the filling block 40 is made of the same material as the second member 20.
The filling block 40 in the first hole 11 can wrap the inner wall of the first hole 11 and the bonding wire 31, and the bonding wire 31 is shielded, so that the bonding wire 31 is isolated from the outside, and the sealing performance of the bonding wire 31 is improved.
The laser 3D printing technology is adopted, the surface of the second member 20 exposed to the first hole 11 is melted in the laser melting process, the substrate which is melted and made of the same material as the second member 20 is continuously melted, the melted substrate is melted and combined with the second member 20 which is melted and melted on the surface, the height of the substrate filled in the first hole 11 after being melted is gradually increased along with the continuous melting and solidification of the substrate in the first hole 11, and the filling block 40 is formed after cooling. The shape and size of the filling block 40 is adapted to the shape and size of the first hole 11. In other embodiments, the height of the filler block 40 may also be less than the thickness of the first member 10. The laser 3D printing technique is applicable to the filling blocks 40 with different heights.
In the process of forming the filling block 40 in the above scheme, the second member 20 and the laser-melted base material are sufficiently fused, so that the second member 20 and the filling block 40 are sufficiently combined and form an integral structure, the connection strength between the second member 20 and the filling block 40 is improved, and in the process of melting, the formed filling block 40 and the inner wall of the first hole 11 are melted and tightly combined, so that the connection strength and the combination tightness between the filling block 40 and the first member 10 are improved, and the filling block 40 also covers the inner wall of the first hole 11 and the combination line 31.
Referring to fig. 9, in some embodiments, in step S1, when the first hole 11 is formed, the first hole 11 further extends to the second member 20, and the depth of the first hole 11 is greater than the thickness of the first member 10, so as to increase the bonding area between the filler block 40 and the second member 20, thereby facilitating the sufficient fusion between the filler block 40 and the second member 20 and improving the bonding strength between the filler block 40 and the second member 20.
Referring to fig. 9, in other embodiments, in step S1, a slope 12 is connected between the inner wall and the bottom wall of the first hole 11 of the second member 20, and the slope 12 is connected between the inner wall and the bottom wall of the first hole 11 in an inclined manner. The inclined surface 12 is provided to avoid a narrow space formed at the corner where the inner wall and the bottom wall of the first hole 11 are connected when the laser 3D printing technology is adopted, so that the filler block 40 can be sufficiently fused with the second member 20 in the first hole 11, and the influence of the narrow space on the combination of the filler block 40 and the second member 20 is eliminated. The inclined surface 12 is disposed to extend around the junction of the bottom wall and the inner wall of the first hole 11 so as to reduce as much as possible the narrow space at the corner where the inner wall and the bottom wall of the first hole 11 are joined. In some embodiments, the slope 12 is inclined at an angle of 30 ° -45 °, such as may be 30 °, 40 °, or 45 °, relative to the bottom wall.
Referring to FIG. 9, in some embodiments, the first hole 11 in the second member 20 has a depth h of 0.1 mm.ltoreq.h.ltoreq.0.5 mm. The cutting of the second member 20 is reduced, and the laser melting operation time is also reduced to some extent, on the premise that the depth h of the first hole 11 located in the second member 20 can ensure sufficient fusion of the filler piece 40 and the second member 20. In some embodiments, h may be 0.1mm, 0.2mm, 0.3mm, 0.4mm, or 0.5mm.
In some embodiments, the filling block 40 includes a plurality of unit layers (not shown) disposed along the axial direction of the first hole 11, and in the laser 3D printing, the laser burns the substrate along a first path set in the second direction Y and a second path set in the third direction Z to obtain a unit layer, i.e., the laser burns the substrate along a path set radially in the axial direction of the first hole 11 to obtain a unit layer. The plurality of unit layers are stacked along a first direction X perpendicular to a surface formed by the second direction Y and the third direction Z to form the filling block 40. Wherein the axis of the first hole 11 is arranged along the first direction X, and the radial direction of the first hole 11 is parallel to the plane of the second direction Y and the third direction Z. The above-described method may be applied to large-sized holes having irregularities, and the filling block 40 adapted to the first hole 11 is formed by stacking a plurality of unit layers. In some embodiments, in the laser 3D printing, if the inner diameter of the first hole 11 is small, the laser burns the substrate and moves along the axial direction of the first hole 11, and the burned substrate is continuously melt-solidified in the axial direction of the first hole 11 to form the filling block 40. In this embodiment, the laser 3D printing technology is applicable to the first holes 11 with different inner diameters, so that the universality is strong and the application range is wide.
S3, referring to FIG. 1, a second hole 41 penetrating the filling block 40 is formed, the material of the inner wall of the second hole 41 is the same as that of the second member 20, and the second hole 41 also extends to the second member 20 connected with the filling block 40.
The processing method provided by the application is suitable for the composite member 100 with different thicknesses, is also suitable for the first holes 11 with different shapes, has strong universality, and can also adjust the height and the wall thickness of the filling block 40 according to the requirements so as to meet different requirements.
In some embodiments, along the first direction X, the height of the filler block 40 is H 1 The first member 10 has a thickness H 2 ，H 1 ≥(0.5-1)·H 2 In this range, the bonding strength between the filler block 40 and the first member 10 can be improved. If H1 is equal to 0.5H 2 、0.6H 2 、0.7H 2 Or H 2 。
In some embodiments, after the second hole 41 is formed, the wall thickness of the filling block 40 is greater than or equal to 0.5mm, so as to ensure the structural strength of the filling block 40 and meet the production requirement.
The second hole 41 is formed in the filling block 40 to process the filling block 40 to form a hole structure, which is beneficial to the installation of subsequent fasteners. In some embodiments, the filling block 40 may be provided with a plurality of second holes 41 arranged side by side. The manner in which the second hole 41 is formed in the filler block 40 includes insert drilling, CNC milling, and the like.
Referring to fig. 10, in other embodiments, the second hole 41 is formed by milling the filling block 40, and grooves with different depths may be milled on the inner wall of the second hole 41, so that the wall thickness of the filling block 40 may be set according to requirements. Meanwhile, the filling block 40 is formed in the first hole 11 by adopting the laser 3D printing technology, the wall thickness and the height of the filling block 40 can meet the requirements of the bonding strength of the filling block 40 and the first component 10 and the bonding strength of the filling block 40 and the second component 20 in different scenes according to the requirements of specific application scenes, and the application range is wide. In other embodiments, the number of the second holes 41 formed in the filling block 40 may be adjusted according to the requirement.
Referring to fig. 5, in some embodiments, the composite member 100 is further subjected to a milling process, a first groove 13 is formed on the first member 10, and the first groove 13 and the second hole 41 communicate. In particular, it may be formed by milling an end of the partial filling block 40 or milling an inner wall of the partial filling block 40 (see fig. 5 and 6). Meanwhile, a second groove 21 is formed on the second member 20 by milling, the second groove 21 communicating with the second hole 41. The shape and depth of the first groove 13 and the second groove 21 may be set according to actual needs.
In the above-described method of processing the composite member 100, the material of the first member 10 is aluminum or an aluminum alloy, and the material of the second member 20 is titanium or a titanium alloy. For example, the material of the first member 10 is aluminum, the material of the second member 20 is titanium, and when the composite member 100 is subjected to the chemical anode process, a titanium film layer (not shown) is formed on the inner wall of the second hole 41, and the thickness of the titanium film layer is uniform, because the first member 10 and the second member 20 are shielded and sealed by the filling block 40 of the titanium material at the joint line 31 of the first hole 11, the first member 10 and the second member 20 can be prevented from being cracked from the joint line 31 when the subsequent composite member 100 is placed in a high-temperature environment (such as 140 ℃ in the PVD process), and the service life of the composite member 100 is improved.
The present application is illustrated by the following specific examples. The specific embodiment is illustrated with the first member 10 being aluminum and the second member 20 being titanium.
Example 1
The aluminum member 60 and the titanium member 70 are laminated along the first direction X to form a composite member 100 ', and two first holes 11' are opened in the aluminum member 60. The filling block 40 ' is formed in the two first holes 11 ' by using a 3D printing technology to burn titanium wires, wherein the wire diameter of the titanium wires is 1.0mm, the voltage of laser is 5V, the laser current is 1A, the output power of the laser is 1000W, the deposition rate for forming the filling block 40 ' is 200mm/min, and the E output is 18. The height of the filler block 40 'is greater than the thickness of the aluminum member 60, and the filler block 40' protrudes from the aluminum member 60, as shown in fig. 11a.
The filler block 40 'is machined by milling, the portion of the filler block 40' protruding the aluminum member 60 is milled, and a second hole 41 'is opened in the filler block 40', as shown in fig. 11b. The aluminum member 60 is further provided with a second groove 21 ', the second groove 21 ' is communicated with the two second holes 41 ', the filling block 40 ' is tightly combined with the inner wall of the aluminum member 60, and the height of the filling block 40 ' is consistent with the height of the aluminum member 60. It can also be seen from fig. 11a and 11b that the filler piece 40 ' seals the bond line 31 of the titanium member 70 and the aluminum member 60 at the first hole 11 ' and the inner wall of the first hole 11 '.
Example two
The difference between the second embodiment and the first embodiment is that the voltage of the laser is 5V, the laser current is 10A, the output power of the laser is 600W, the deposition rate of the formed filling block 40' is 480mm/min, and the output quantity is 48. The inner diameter of the first hole 11 'is larger than that of the first hole 11' in the first embodiment, see fig. 12a, and a plurality of second holes 41 'are formed in the filling block 40', see fig. 12b.
The present application performs hole air resistance testing on the composite member 100' prepared in example one. The sealing ring is utilized to form a local seal at the first hole 11 ' of the composite member 100 ', and the local seal is inflated in a space with the inflation pressure of 1.25Bar, and the 30s gas leakage prevention test value is maintained to be less than 0.05sccm (the specification range required by the member), so that the sealing performance of the sealing bonding line 31 of the filling block 40 ' is good, the sealing and corrosion prevention effects can be achieved, and the actual production requirements are met.
In the first embodiment, the bonding force between the filling block 40 ' and the titanium member 70 is also tested, specifically, a hole may be formed at a position of the titanium member 70 corresponding to the filling block 40 ', and the cylindrical filling block 40 ' is taken as an example, the wall thickness of the filling block 40 ' is 0.5mm, that is, the wall thickness of the connection between the filling block 40 ' and the titanium member 70 is 0.5mm. In the test, the pushing block is pushed against the filling block 40 ' through the hole and applies a pushing force to the filling block 40 ' along the opposite direction of the first direction X, and the required pushing force intensity is more than 50kgf, so that the bonding force between the filling block 40 ' and the titanium member 70 is at least more than 50kgf. Under the same test conditions, if the wall thickness of the filler block 40 'is 0.82mm, the required thrust strength is > 150kgf, i.e., the bonding force between the filler block 40' and the titanium member 70 is at least greater than 150kgf. This means that, within a certain range, the thicker the wall thickness of the connection between the filler block 40' and the titanium member 70 is, the larger the bonding area is, the higher the bonding strength between the two is.
Finally, it should be noted that the above embodiments are merely for illustrating the technical solutions of the present application and not for limiting, and although the present application has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solutions of the present application without departing from the spirit and scope of the technical solutions of the present application.
Claims (10)
1. A method of processing a composite member including a first member and a second member formed by stacking different materials, the method comprising:
forming a first hole through the first member, a portion of the second member being exposed to the first hole;
filling the material of the second member in the first hole by using a laser 3D printing technology to form a filling block, wherein the filling block is connected with the part of the second member exposed to the first hole;
and a second hole penetrating through the filling block is formed, the inner wall of the second hole is made of the same material as the second member, and the second hole also extends to the second member connected with the filling block.
2. The method of processing of claim 1, wherein the first hole also extends to the second member when the first hole is opened, the first hole having a depth greater than a thickness of the first member.
3. The method of claim 2, wherein a bevel is connected between the inner wall and the bottom wall of the first hole of the second member, the bevel being connected between the inner wall and the bottom wall of the first hole in an inclined manner.
4. The method of claim 1, wherein the first hole in the second member has a depth h of 0.1 mm.ltoreq.h.ltoreq.0.5 mm.
5. The processing method according to claim 1, wherein the filler block includes a plurality of unit layers disposed along an axial direction of the first hole, and the laser burns the base material along a path set in a radial direction of the first hole to obtain a unit layer upon laser 3D printing, the plurality of unit layers being stacked along the axial direction of the first hole to form the filler block.
6. The method of processing according to claim 1, wherein, at the time of laser 3D printing, along the axial direction of the first hole, laser moves away from the second member and burns out a base material to obtain the filler block.
7. The method of claim 1, wherein an angle formed between the inner wall of the first hole and the bottom wall of the first hole is θ, θ being greater than or equal to 90 °.
8. The method according to any one of claims 1 to 7, wherein the filler is protruded from the second member to a height H 1 The thickness of the first component is H 2 ，H 1 ≥(0.5-1)·H 2 The method comprises the steps of carrying out a first treatment on the surface of the After the second hole is formed, the wall thickness of the filling block is more than or equal to 0.5mm.
9. A composite member produced by the processing method according to any one of claims 1 to 8.
10. The composite member of claim 9 wherein the material of the first member is aluminum or an aluminum alloy and the material of the second member is titanium or a titanium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311533876.8A CN117532150A (en) | 2023-11-15 | 2023-11-15 | Composite member and method for processing same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311533876.8A CN117532150A (en) | 2023-11-15 | 2023-11-15 | Composite member and method for processing same |
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| Publication Number | Publication Date |
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| CN117532150A true CN117532150A (en) | 2024-02-09 |
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| CN202311533876.8A Pending CN117532150A (en) | 2023-11-15 | 2023-11-15 | Composite member and method for processing same |
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| Country | Link |
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| CN (1) | CN117532150A (en) |
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2023
- 2023-11-15 CN CN202311533876.8A patent/CN117532150A/en active Pending
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