CN108393586A - A kind of method for laser welding of titanium alloy sandwich braze plank - Google Patents
A kind of method for laser welding of titanium alloy sandwich braze plank Download PDFInfo
- Publication number
- CN108393586A CN108393586A CN201710009633.2A CN201710009633A CN108393586A CN 108393586 A CN108393586 A CN 108393586A CN 201710009633 A CN201710009633 A CN 201710009633A CN 108393586 A CN108393586 A CN 108393586A
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- China
- Prior art keywords
- titanium alloy
- laser welding
- titanium
- plank
- laser
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B23K26/24—Seam 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
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
-
- 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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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The present invention provides a kind of method for laser welding of titanium alloy sandwich braze plank, including：Using titanium alloy plate as base material, during being brazed using titanium group high temperature solder, in the weld seam using the thin position to be laser welded being filled between titanium alloy sheet of titanium, Partial obturation is carried out to titanium group high temperature solder, obtains brazing sheet to be laser welded；Laser welding is carried out to brazing sheet to be laser welded using laser welding process.The present invention forms barrier tape using thin be filled between the titanium alloy sheet being brazed of titanium, laser welding is carried out between multi-layered brazing plank at the position of barrier tape using laser welding process afterwards, realize the purpose that laser welding is carried out to titanium alloy sandwich braze plank, and laser welding process is optimized, the quality of welding is improved, seam organization is good.
Description
Technical field
The present invention relates to technical field of laser processing, more particularly to a kind of laser welding of titanium alloy sandwich braze plank
Method.
Background technology
Siding class formation part is common in Aeronautics and Astronautics engineer application, and titanium alloy material is due to its excellent specific strength, ratio
The advantages that rigidity, corrosion resistance and high impact toughness, is used widely in the wall panel structure of thin wall type, and common is like flying
The pneumatic covering of the aircraft such as machine, rocket.Aeronautics and Astronautics class formation part generally has an extremely stringent weight demands, therefore
Often there is cavity body structure in the design and manufacture of structural member.It can be realized between upper and lower bilayer or multilayer using method for welding
Closed type cavity body structure is realized in connection.
After taking multi-layered brazing method to shape closed type cavity body structure, the connection between component becomes in manufacturing process
Difficult point.Addition between multi-layer board after soldering due to solder is not suitable for carrying out melting welding again.Brazing filler metal compositions useful is generally all chosen molten
The lower alloy of point, alloyed product is generated after fusing and solidification with base material matrix so that seam organization is uneven, generates
The defects of a large amount of crackle, stomatas.Currently, being carried out generally by the way of machine riveting between brazing sheet.Using the side of riveting
Formula, since the manufacture of rivet hole seriously affects integrally-built integrality so that overall structure fatigue behaviour is bad.
Invention content
The present invention provides a kind of methods that can carry out laser welding to titanium alloy sandwich braze plank.
The present invention provides a kind of method for laser welding of titanium alloy sandwich braze plank, including：
1）Using titanium alloy plate as base material, during being brazed using titanium group high temperature solder, titanium is filled into using titanium is thin
In the weld seam at the position to be laser welded between alloy sheets, Partial obturation is carried out to titanium group high temperature solder, acquisition waits for Laser Welding
The brazing sheet connect；
2) laser welding process is used to carry out laser welding to brazing sheet to be laser welded.
Further, the step 2）Including：
21）The position to be laser welded of two or more brazing sheets to be laser welded is spliced, welding bead is formed, and
One layer of titanium alloy powder is coated on welding bead surface；
22）Coating Titanium Powder last layer is scanned using the hot spot that defocuses of low energy densities, titanium alloy powder surface is made to melt
Change, is fixedly arranged at welding bead surface；
23）Laser welding is carried out to welding bead using high-power focal beam spot.
Further, the titanium alloy powder is TC4 titanium alloy powders, BaF2And NaF2Mixture.
Further, the thickness of the titanium alloy powder coating is 0.1mm ~ 0.5mm, and width is 2mm ~ 10mm.
Further, a diameter of 5mm ~ 20mm for defocusing hot spot, laser power are 1000W ~ 3000W, sweep speed
For 0.5m/min ~ 5m/min.
Further, the laser power of the focal beam spot is 3000W ~ 10000W, and sweep speed is 3m/min ~ 10m/
min。
Further, the process of the laser welding carries out under the protection of argon gas.
Further, the titanium alloy plate is TC4 titanium alloy plates.
Further, it is that TC1 titaniums are thin that the titanium is thin.
Further, the titanium group high temperature solder is Ti-15Cu-25Ni.
The present invention forms barrier tape using thin be filled between the titanium alloy sheet being brazed of titanium, uses laser welding work afterwards
Skill carries out laser welding at the position of barrier tape between multi-layered brazing plank, realizes and is carried out to titanium alloy sandwich braze plank
The purpose of laser welding, and laser welding process is optimized, the quality of welding is improved, seam organization is good.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
Fig. 1 is a kind of flow chart of the method for laser welding of titanium alloy sandwich braze plank of the embodiment of the present invention；
Fig. 2 is a kind of stream of the laser welding process of the method for laser welding of titanium alloy sandwich braze plank of the embodiment of the present invention
Cheng Tu；
Fig. 3 is that schematic diagram is arranged in the barrier of the embodiment of the present invention；
Fig. 4 is the type face schematic diagram before the laser welding of the embodiment of the present invention；
Fig. 5 is the type face schematic diagram after the laser welding of the embodiment of the present invention；
Fig. 6 is the flaw detection structure chart that the two layer lead soldered plate of the embodiment of the present invention welds.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
The present invention provides a kind of method for laser welding of titanium alloy sandwich braze plank, as shown in Figure 1, including：
Step S1 during being brazed using titanium group high temperature solder, uses the thin filling of titanium using titanium alloy plate as base material
Into in the weld seam at the position to be laser welded between titanium alloy sheet, Partial obturation is carried out to titanium group high temperature solder, obtains and waits swashing
The brazing sheet of photocoagulation；
Step S2 carries out laser welding using laser welding process to brazing sheet to be laser welded.
In the one side of the embodiment of the present invention, as shown in Fig. 2, the step 2）Including：
Step S21 splices the position to be laser welded of two or more brazing sheets to be laser welded, forms weldering
Road, and coat one layer of titanium alloy powder on welding bead surface；
Step S22 is scanned coating Titanium Powder last layer using the hot spot that defocuses of low energy densities, makes titanium alloy powder table
Face is melted, and welding bead surface is fixedly arranged at；
Step S23 carries out laser welding using high-power focal beam spot to welding bead.
In the one side of the embodiment of the present invention, the titanium alloy powder is TC4 titanium alloy powders, BaF2And NaF2It is mixed
Object is closed, the thickness of the titanium alloy powder coating is 0.1mm ~ 0.5mm, and width is 2mm ~ 10mm.
In the one side of the embodiment of the present invention, a diameter of 5mm ~ 20mm for defocusing hot spot, laser power 1000W
~ 3000W, sweep speed are 0.5m/min ~ 5m/min, and the laser power of the focal beam spot is 3000W ~ 10000W, scanning speed
Degree is 3m/min ~ 10m/min, and the process of the laser welding carries out under the protection of argon gas.Welding bead upper surface titanium alloy
The absorption of powder being added with conducive to laser energy, to face of weld undercut, collapses, the generation of underbead crack, which is played, to be filled up, presses down
It makes and uses.
In the one side of the embodiment of the present invention, the titanium alloy plate is TC4 titanium alloy plates, and the thin titanium is TC1
Titanium is thin, and the titanium group high temperature solder is Ti-15Cu-25Ni.
The present invention forms barrier tape using thin be filled between the titanium alloy sheet being brazed of titanium, uses laser welding work afterwards
Skill carries out laser welding at the position of barrier tape between multi-layered brazing plank, realizes and is carried out to titanium alloy sandwich braze plank
The purpose of laser welding, and laser welding process is optimized, the quality of welding is improved, seam organization is good.
The specifically embodiment of the present invention is introduced below in conjunction with case：
Embodiment one
The first step is brazed base material as upper and lower covering using 1.0mm thickness TC4 titanium alloy plates 1, chooses titanium group high temperature solder 3 and make
Connection solder between double sheets, it is therefore preferable to Ti-15Cu-25Ni.The TC1 titanium alloys strip 2 of 0.05mm thickness is cut out
It is cut into the long band of 5mm width, is set to position while welding, as shown in Figure 3.Heating so that solder is molten in vacuum drying oven after being provided with
Change, upper and lower two layers of base material links together, and forms double-deck brazing sheet.
Second step, after two or more two layer lead soldered planks are formed, when being spliced into an entirety using laser welding mode,
First welding bead position upper surface coat a composition of layer be TC4 titanium alloy powder 5, powdered ingredients be TC4 titanium alloy powders,
BaF2、NaF2According to 1：0.01：0.01 mass ratio is mixed, and the thickness that mixture is coated on welding bead surface is 0.1mm, wide
Degree is 2mm, as shown in Figure 4.First using hot spot, spot diameter 5mm, laser power 1000W is defocused, speed 0.5m/min is swept
Retouching powder surface makes powder surface melting consolidate, and is then welded using high power laser, bonding power 3000W, welds
Speed 3m/min obtains structure as shown in Figure 5.
Embodiment two
The first step is brazed base material as upper and lower covering using 1.0mm thickness TC4 titanium alloy plates 1, chooses titanium group high temperature solder 3 and make
Connection solder between double sheets, it is therefore preferable to Ti-15Cu-25Ni.The TC1 titanium alloys strip 2 of 0.05mm thickness is cut out
It is cut into the long band of 5mm width, is set to position while welding, as shown in Figure 3.Heating so that solder is molten in vacuum drying oven after being provided with
Change, upper and lower two layers of base material links together, and forms double-deck brazing sheet.
Second step, after two or more two layer lead soldered planks are formed, when being spliced into an entirety using laser welding mode,
First welding bead position upper surface coat a composition of layer be TC4 titanium alloy powder 5, powdered ingredients be TC4 titanium alloy powders,
BaF2、NaF2According to 1：0.01：0.01 mass ratio is mixed, and the thickness that mixture is coated on welding bead surface is 0.5mm, wide
Degree is 10mm, as shown in Figure 4.First using hot spot, spot diameter 20mm, laser power 3000W is defocused, speed 5m/min is swept
Retouching powder surface makes powder surface melting consolidate, and is then welded using high power laser, bonding power 10000W, welds
Speed 10m/min obtains structure as shown in Figure 5.
As shown in fig. 6, weld seam passes through x-ray detection, internal flawless.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of method for laser welding of titanium alloy sandwich braze plank, which is characterized in that including：
1）Using titanium alloy plate as base material, during being brazed using titanium group high temperature solder, titanium is filled into using titanium is thin
In the weld seam at the position to be laser welded between alloy sheets, Partial obturation is carried out to titanium group high temperature solder, acquisition waits for Laser Welding
The brazing sheet connect；
2) laser welding process is used to carry out laser welding to brazing sheet to be laser welded.
2. the method for laser welding of titanium alloy sandwich braze plank as described in claim 1, which is characterized in that the step 2）
Including：
21）The position to be laser welded of two or more brazing sheets to be laser welded is spliced, welding bead is formed, and
One layer of titanium alloy powder is coated on welding bead surface；
22）Coating Titanium Powder last layer is scanned using the hot spot that defocuses of low energy densities, titanium alloy powder surface is made to melt
Change, is fixedly arranged at welding bead surface；
23）Laser welding is carried out to welding bead using high-power focal beam spot.
3. the method for laser welding of titanium alloy sandwich braze plank as claimed in claim 2, which is characterized in that the titanium alloy
Powder is TC4 titanium alloy powders, BaF2And NaF2Mixture.
4. the method for laser welding of titanium alloy sandwich braze plank as claimed in claim 3, which is characterized in that the titanium alloy
The thickness of powder coating is 0.1mm ~ 0.5mm, and width is 2mm ~ 10mm.
5. the method for laser welding of titanium alloy sandwich braze plank as claimed in claim 2, which is characterized in that described to defocus light
A diameter of 5mm ~ 20mm of spot, laser power are 1000W ~ 3000W, and sweep speed is 0.5m/min ~ 5m/min.
6. the method for laser welding of titanium alloy sandwich braze plank as claimed in claim 2, which is characterized in that the focusing light
The laser power of spot is 3000W ~ 10000W, and sweep speed is 3m/min ~ 10m/min.
7. the method for laser welding of titanium alloy sandwich braze plank as claimed in claim 2, which is characterized in that the Laser Welding
The process connect carries out under the protection of argon gas.
8. the method for laser welding of the titanium alloy sandwich braze plank as described in any one of claim 1-7, which is characterized in that
The titanium alloy plate is TC4 titanium alloy plates.
9. the method for laser welding of titanium alloy sandwich braze plank as claimed in claim 8, which is characterized in that the titanium is thin to be
TC1 titaniums are thin.
10. the method for laser welding of titanium alloy sandwich braze plank as claimed in claim 9, which is characterized in that the titanium-based
High-temp solder is Ti-15Cu-25Ni.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710009633.2A CN108393586B (en) | 2017-01-06 | 2017-01-06 | A kind of method for laser welding of titanium alloy sandwich braze plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710009633.2A CN108393586B (en) | 2017-01-06 | 2017-01-06 | A kind of method for laser welding of titanium alloy sandwich braze plate |
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| CN108393586A true CN108393586A (en) | 2018-08-14 |
| CN108393586B CN108393586B (en) | 2019-11-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111230296A (en) * | 2020-01-10 | 2020-06-05 | 中国航空制造技术研究院 | Porous thin-wall cavity component and laser welding method |
| CN115415624A (en) * | 2022-08-23 | 2022-12-02 | 中车青岛四方机车车辆股份有限公司 | Brazing sealing method, spot welding structure and railway vehicle |
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| CN1140115A (en) * | 1996-05-14 | 1997-01-15 | 西北有色金属研究院 | Al-Ti-Al solder tri-layer rolling composite plate and use method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111230296A (en) * | 2020-01-10 | 2020-06-05 | 中国航空制造技术研究院 | Porous thin-wall cavity component and laser welding method |
| CN111230296B (en) * | 2020-01-10 | 2022-03-04 | 中国航空制造技术研究院 | Porous thin-wall cavity component and laser welding method |
| CN115415624A (en) * | 2022-08-23 | 2022-12-02 | 中车青岛四方机车车辆股份有限公司 | Brazing sealing method, spot welding structure and railway vehicle |
| CN115415624B (en) * | 2022-08-23 | 2024-05-28 | 中车青岛四方机车车辆股份有限公司 | Braze welding sealing method, spot welding structure and railway vehicle |
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| CN108393586B (en) | 2019-11-12 |
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