CN114571080A - Oblique angle double-sided laser welding method for bulk amorphous alloy and plate - Google Patents
Oblique angle double-sided laser welding method for bulk amorphous alloy and plate Download PDFInfo
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- CN114571080A CN114571080A CN202210395769.2A CN202210395769A CN114571080A CN 114571080 A CN114571080 A CN 114571080A CN 202210395769 A CN202210395769 A CN 202210395769A CN 114571080 A CN114571080 A CN 114571080A
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- 238000003466 welding Methods 0.000 title claims abstract description 127
- 229910000808 amorphous metal alloy Inorganic materials 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000001154 acute effect Effects 0.000 claims description 7
- 229910001020 Au alloy Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000003353 gold alloy Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 229910001256 stainless steel alloy Inorganic materials 0.000 claims description 3
- 238000002425 crystallisation Methods 0.000 abstract description 9
- 230000008025 crystallization Effects 0.000 abstract description 9
- 230000007547 defect Effects 0.000 abstract description 7
- 238000002844 melting Methods 0.000 abstract description 6
- 230000008018 melting Effects 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- 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
- B23K26/20—Bonding
- B23K26/32—Bonding taking account of the properties of the material involved
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention belongs to the technical field of amorphous alloy laser welding, and particularly relates to an oblique-angle double-sided laser welding method for a block amorphous alloy and a plate. The welding method comprises the following steps: butting a first welding inclined surface facing obliquely upwards of a first body to be welded with a second welding inclined surface facing obliquely downwards of a second body to be welded to form a part to be welded; carrying out laser welding on the upper surface of a part to be welded; and carrying out laser welding on the lower surface of the part to be welded. When the amorphous alloy plates with the same thickness are welded, the energy input by single laser welding is reduced, and the crystallization of the amorphous alloy can be prevented; the bottom is not welded thoroughly, so that the air contact during the complete welding of the bottom is avoided, and the defects of welding air holes and the like are reduced; under the condition of the same welding parameters, the thickness of the welded amorphous alloy plate can be obviously improved; the laser is not on the same vertical plane during the upper and lower two times of welding, so that the repeated melting part of the amorphous alloy in the two times of welding is reduced, and the crystallization of the amorphous alloy caused by repeated melting can be prevented.
Description
Technical Field
The invention belongs to the technical field of amorphous alloy laser welding, and particularly relates to an oblique-angle double-sided laser welding method for a bulk amorphous alloy and a plate.
Background
Laser welding is a common joining process, where the amorphous surfaces are heated by laser radiation to melt the bulk amorphous alloy into a molten pool, which is then welded together.
In the conventional amorphous alloy laser welding process, inert shielding gas such as argon, nitrogen and the like is blown above during welding, but compared with common metal materials such as iron, copper and the like, the amorphous alloy contains very active metal elements such as zirconium, titanium and the like, and is easier to react with oxygen in the air after being melted, and the melted part at the lower part of the amorphous welding seam cannot be completely protected by blowing above, so that the defects such as air holes are formed at the bottom of the welding seam and the like. In addition, the laser energy required after a single welding is high, and the crystallization of the amorphous alloy is easily caused.
Disclosure of Invention
The invention aims to provide an oblique-angle double-sided laser welding method for a bulk amorphous alloy and a plate, so as to solve the technical problem.
In order to solve the technical problem, the invention provides an oblique-angle double-sided laser welding method for a bulk amorphous alloy, which comprises the following steps: butting a first welding inclined surface facing obliquely upwards of a first body to be welded with a second welding inclined surface facing obliquely downwards of a second body to be welded to form a part to be welded; carrying out laser welding on the upper surface of a part to be welded; and carrying out laser welding on the lower surface of the part to be welded.
Further, when the upper surface and the lower surface of the part to be welded are subjected to laser welding, the laser beam deviates from the joint and is respectively positioned on one side of the second body to be welded and one side of the first body to be welded for welding.
Further, the thickness of the first body to be welded and the thickness of the second body to be welded are respectively divided into two parts with equal thickness by the plane P; the projection of the part of the second welding inclined plane above the plane P to the upper surface of the second body to be welded forms an area A; the part of the first welding inclined plane, which is positioned below the plane P, is projected to the lower surface of the first body to be welded to form a B area; when the upper surface and the lower surface of the part to be welded are subjected to laser welding, laser beams are respectively welded in an area A and an area B.
Furthermore, when the upper surface and the lower surface of the part to be welded are subjected to laser welding, the laser beams are respectively welded in the middle of the area A and the middle of the area B.
Further, an acute angle formed by the first welding inclined plane and the lower surface of the first body to be welded is 45-70 degrees; and the second welding inclined plane and the upper surface of the second body to be welded form an acute angle of 45-70 degrees.
Further, the thickness of the first body to be welded and the thickness of the second body to be welded are not less than 0.5 mm.
Further, the tensile strength of a welding seam formed after the first body to be welded and the second body to be welded are 85% -95% of the tensile strength of the body to be welded.
Further, one of the first and second solder is a non-gold alloy, and the other is one of a non-gold alloy, stainless steel, copper, aluminum, and titanium alloy.
In still another aspect, the invention further provides a bulk amorphous alloy plate welded by the oblique double-sided laser welding method.
The invention has the beneficial effects that:
when the amorphous alloy plates with the same thickness are welded, the energy input by single laser welding is reduced, and the crystallization of the amorphous alloy can be prevented; the bottom is not welded thoroughly, so that the air contact during the complete welding of the bottom is avoided, and the defects of welding air holes and the like are reduced; under the condition of the same welding parameters, the thickness of the welded amorphous alloy plate can be obviously improved; the laser is not on the same vertical plane during the upper and lower two times of welding, so that the repeated melting part of the amorphous alloy in the two times of welding is reduced, and the crystallization of the amorphous alloy caused by repeated melting can be prevented.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of a first and a second to-be-welded bodies of a bulk amorphous alloy of the present invention by an oblique double-sided laser welding method;
FIGS. 2, 3 and 4 are schematic views of a method of oblique double-sided laser welding for bulk amorphous alloys according to the present invention;
FIG. 5 is a schematic illustration of a single-sided weld;
FIG. 6 is a metallographic representation of specific example 1;
FIG. 7 is an intensity growth curve of specific example 1;
FIG. 8 is a metallographic representation of comparative example 2;
fig. 9 is a strength increase curve of comparative example 2.
In the figure:
the welding device comprises a first body to be welded 1, a first welding inclined plane 11, a second body to be welded 2, a second welding inclined plane 21 and a part to be welded 3.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. 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.
Examples
The embodiment provides an oblique-angle double-sided laser welding method for a bulk amorphous alloy, which comprises the following steps: butting a first welding inclined surface 11 facing obliquely upwards of the first body to be welded 1 with a second welding inclined surface 21 facing obliquely downwards of the second body to be welded 2 to form a part to be welded 3; performing laser welding on the upper surface of the part 3 to be welded; the lower surface of the portion 3 to be welded is laser welded.
FIG. 1 is a schematic diagram of a first and a second welding targets of the bulk amorphous alloy of the present invention by oblique double-sided laser welding.
In the embodiment, before welding, the welding surfaces of the first body to be welded 1 and the second body to be welded 2 are processed into inclined surfaces, the first welding inclined surface 11 is attached to the second welding inclined surface 21, and the welding part 3 is formed in a certain area on two sides of a joint; in the invention, double-sided step welding is adopted, and as shown in figure 2, the upper surface of a part 3 to be welded is subjected to laser welding; then turning over the body to be welded, and performing laser welding on the lower surface of the part 3 to be welded as shown in fig. 3; the welding process can be protected by inert gas.
As shown in fig. 2 and 3, in the present embodiment, it is preferable that when the upper surface and the lower surface of the portion to be welded 3 are laser-welded, the laser beam is deviated from the joint and is positioned on the side of the second body to be welded 2 and the first body to be welded 1, respectively, to perform welding.
As shown in fig. 4, as a preferred embodiment of the present embodiment, the thicknesses of the first to-be-welded body 1 and the second to-be-welded body 2 are divided by a plane P into two parts having equal thicknesses, respectively; the projection of the part of the second body to be welded 21 above the plane P to the upper surface of the second body to be welded 2 forms an area a; the projection of the part of the first welding inclined plane 11 below the plane P to the lower surface of the first body to be welded 1 forms a B area; wherein, when the upper surface and the lower surface of the part 3 to be welded are welded by laser, the laser beams are respectively welded in the area A and the area B.
In the present embodiment, preferably, when the upper surface and the lower surface of the portion to be welded 3 are laser-welded, the laser beams are respectively welded in the middle of the area a and the middle of the area B, so that the welding quality can be improved.
In this embodiment, it is preferable that the acute angle formed by the first welding inclined plane 11 and the lower surface of the first body to be welded 1 is 45 ° to 70 °; and the second welding slope 21 forms an acute angle of 45 to 70 with the upper surface of the second body 2 to be welded.
In this embodiment, it is preferable that the first welding slope 11 and the second welding slope 21 are parallel slopes.
In the present embodiment, it is preferable that the thickness of each of the first and second bodies to be welded 1, 2 is not less than 0.5 mm.
In this embodiment, preferably, the tensile strength of a weld formed after the first to-be-welded body 1 and the second to-be-welded body 2 are welded is 85% to 95% of the tensile strength of the to-be-welded body.
In the present embodiment, it is preferable that one of the first and second to-be-welded bodies 1 and 2 may be a non-gold alloy, and the other may be one of a non-gold alloy, stainless steel, copper, aluminum, and titanium alloy.
On the basis of the above embodiments, the present embodiment further provides a bulk amorphous alloy sheet welded by the oblique double-sided laser welding method as described above.
Detailed description of the preferred embodiment 1
The first body to be welded 1 and the second body to be welded 2 adopt Zr as the component52.5Ti5Cu17.9Ni14.6Al10The thickness of the amorphous alloy plate is 1mm, the acute angle between the welding surface and the surface of the to-be-welded body is 55 degrees, the welding laser energy is 0.7J, the welding frequency is 25Hz, and the welding speed is 5 mm/s.
The bulk amorphous alloy is welded by the oblique angle double-sided laser welding method and protected by inert gas.
As shown in fig. 6, the weld did not have defects such as porosity and crystallization after welding.
As shown in FIG. 7, the weld tensile strength was 955MPa, while the tensile strength of the original sheet material was about 1000 MPa.
Comparative example 1
The first body to be welded 1 and the second body to be welded 2 are made of the same plate as the specific embodiment, the welding surface is a vertical surface, the thickness is 1mm, the welding laser energy is 1.2J, the welding frequency is 25Hz, and the welding speed is 5 mm/s.
The welding was performed by single-side welding as shown in fig. 5, and was protected with inert gas.
As shown in fig. 8, the metallographic phase at the bottom of the weld showed defects such as weld porosity and crystallization during single-side welding.
As shown in FIG. 9, the weld tensile strength was 490 MPa.
The reason for analyzing is that the welding laser energy is too high, and the amorphous alloy is crystallized; the bottom portion contacts air during full penetration, causing weld defects.
Therefore, when the oblique angle double-sided laser welding method for the bulk amorphous alloy is used for welding amorphous alloy plates with the same thickness, the input energy of single laser welding is reduced, and the crystallization of the amorphous alloy can be prevented; the bottom is not welded thoroughly, so that the air contact during the complete welding of the bottom is avoided, and the defects of welding air holes and the like are reduced; under the condition of the same welding parameters, the thickness of the welded amorphous alloy plate can be obviously improved; the laser is not on the same vertical plane during the upper and lower two times of welding, so that the repeated melting part of the amorphous alloy in the two times of welding is reduced, and the crystallization of the amorphous alloy caused by repeated melting can be prevented.
The oblique angle double-sided laser welding method for the bulk amorphous alloy can also be used for welding the amorphous alloy and dissimilar metal, and the specific implementation mode is shown in the following table.
The welding experiment is carried out by respectively adopting amorphous alloy and metals of different materials, such as stainless steel, pure aluminum, pure copper, titanium alloy and the like, and the welding process respectively adopts oblique-angle double-sided welding and right-angle single-sided welding.
Therefore, the oblique-angle double-sided laser welding method for the bulk amorphous alloy can be also applied to welding of the amorphous alloy and dissimilar metals, and compared with a traditional welding mode, the welding strength is obviously improved.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. An oblique angle double-sided laser welding method for a bulk amorphous alloy is characterized by comprising the following steps:
butting a first welding inclined surface (11) facing obliquely upwards of a first body to be welded (1) with a second welding inclined surface (21) facing obliquely downwards of a second body to be welded (2) to form a part to be welded (3);
carrying out laser welding on the upper surface of the part (3) to be welded;
and carrying out laser welding on the lower surface of the part (3) to be welded.
2. The oblique double-sided laser welding method according to claim 1,
when the upper surface and the lower surface of the part (3) to be welded are subjected to laser welding, the laser beam deviates from the joint and is respectively positioned at one side of the second body (2) to be welded and one side of the first body (1) to be welded for welding.
3. The oblique double-sided laser welding method according to claim 2,
the thickness of the first body (1) to be welded and the thickness of the second body (2) to be welded are divided into two parts with equal thickness by a plane P respectively;
the projection of the part of the second welding inclined plane (21) above the plane P to the upper surface of the second body to be welded (2) forms an area A;
the part of the first welding inclined plane (11) below the plane P is projected to the lower surface of the first body to be welded (1) to form a B area; wherein
When the upper surface and the lower surface of the part (3) to be welded are subjected to laser welding, laser beams are respectively welded in an area A and an area B.
4. The oblique double-sided laser welding method according to claim 3,
when the upper surface and the lower surface of the part (3) to be welded are subjected to laser welding, laser beams are respectively welded in the middle of the area A and the middle of the area B.
5. The oblique double-sided laser welding method according to claim 1,
an acute angle formed by the first welding inclined plane (11) and the lower surface of the first body to be welded (1) is 45-70 degrees; and
the second welding inclined plane (21) and the upper surface of the second body to be welded (2) form an acute angle of 45-70 degrees.
6. The oblique double-sided laser welding method according to claim 1,
the thicknesses of the first body (1) to be welded and the second body (2) to be welded are not less than 0.5 mm.
7. The oblique double-sided laser welding method according to claim 1,
the tensile strength of a welding seam formed after the first body to be welded (1) and the second body to be welded (2) are 85% -95% of the tensile strength of the body to be welded.
8. The oblique angle double side laser welding method according to any one of claims 1 to 7,
one of the first to-be-welded body (1) and the second to-be-welded body (2) is a non-gold alloy, and the other is one of the non-gold alloy, stainless steel, copper, aluminum and titanium alloy.
9. A bulk amorphous alloy sheet welded by the oblique double-sided laser welding method according to any one of claims 1 to 7.
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| 文忠等: "激光束偏移量对异种金属焊接接头组织和性能的影响", 焊接技术, vol. 46, no. 12, pages 12 - 16 * |
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