CN109483054A - A kind of docking laser soldering method of CFRTP and metal material - Google Patents
A kind of docking laser soldering method of CFRTP and metal material Download PDFInfo
- Publication number
- CN109483054A CN109483054A CN201811565398.8A CN201811565398A CN109483054A CN 109483054 A CN109483054 A CN 109483054A CN 201811565398 A CN201811565398 A CN 201811565398A CN 109483054 A CN109483054 A CN 109483054A
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- Prior art keywords
- cfrtp
- welded
- metal material
- docking
- soldering method
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Classifications
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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
- B23K26/60—Preliminary treatment
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The present invention relates to welding technology fields, disclose the docking laser soldering method of a kind of CFRTP and metal material, the following steps are included: S1, docking the surface to be welded of CFRTP with the surface to be welded of metal material, and resin material is added between the surface to be welded of CFRTP and the surface to be welded of metal material；S2, resin material is melted by heat transfer using laser beam heats metal material, is then cooled and solidified in the side CFRTP or/and metal material side application pressure along abutting direction.Method of the invention improves weld strength, and in this process, apply certain external force along abutting direction, the weld strength and binding force of CFRTP and metal are further improved under external force, realize the high-intensitive butt welding under the booster action without other reinforcement materials between CFRTP and metal, process flow is simple, and joint quality mitigates.
Description
Technical field
The present invention relates to welding technology field, the docking laser soldering method of specifically a kind of CFRTP and metal material.
Background technique
Composite thermoplastic carbon fiber material (CFRTP) has the characteristics that specific strength is high, corrosion-resistant, antifatigue, heat-resist,
It is the important materials of lightweight manufacture, has a extensive future in aerospace, new-energy automobile field.
In practical applications, it generally requires to realize the connection between CFRTP and metal material.Currently, thermoplastic composite material
Material mainly uses with light alloy composite component and the mechanical connections form such as rivets, is spirally connected.This mode generally requires on CFRTP
Preset mounting hole, the preparation method of mounting hole generally use mechanical hole fabrication, and this method will cause the tearing of composite material interlayer, fibre
The problems such as dimension fracture, hole week cracking, in joint, stress easy to form is concentrated after metal bolts connection, causes the fatigue of structural member
Failure.Being glued has the advantages such as stress collection medium and small, fatigue behaviour is good, anticorrosive, wear-resistant, light weight, still, cementing to be faced with
Some problems, if environmental suitability is poor, connector is easy aging, and dissimilar material is glued larger residual stress easy to form etc..Flush weld
Connect fast with speed of welding, weld strength is high, and vibration stress is small, simple process, does not drill, does not have to glue, not heterogeneous in connector
Material, corrosion-resistant, the advantages such as architecture quality is small.
Laser joining technique has the characteristics that speed is fast, intensity is high, vibration stress, technique are flexible, in CFRTP and metal material
The technologies such as more cementing, mechanical connection have advantage in material connection.Currently, generally realizing CFRTP using the direct welding technique of laser
With the connection of metal material, connection type is also mainly that overlap welding needs to realize pair between the two for certain particular demands
Connect weldering.Compared with overlap welding, butt welding is not since welding material is overlapped, and weld strength is low, and the welding is not firm, causes to weld
Difficulty is big.
Summary of the invention
Status in view of the above technology, the present invention is intended to provide welding side when a kind of CFRTP is docked with metal material
Method has the advantages of weld strength is high, firm welding.
To achieve the goals above, the present invention is adopted the following technical scheme that
A kind of docking laser soldering method of CFRTP and metal material, comprising the following steps:
S1, the surface to be welded of CFRTP is docked with the surface to be welded of metal material, and in the surface to be welded and metal material of CFRTP
Surface to be welded between add resin material；
S2, laser beam heats metal material is utilized in the side CFRTP or/and metal material side application pressure along abutting direction
Material, by heat transfer, resin material is melted, is then cooled and solidified.
Further, the metal material is selected from stainless steel, carbon steel, galvanized steel, aluminium alloy, titanium alloy, magnesium alloy, high temperature
Alloy.
Further, the resin material is selected from PPS, PA, PEEK, PE.
Further, the thickness of the resin material is between 0.01~1mm.
Further, the laser beam focus is in metal material close to the side of potting resin.
The scan path of laser, laser intensity, the scanning speed of laser and sweep time are not particularly limited, with tool
The variation of the welded workpiece of body and welding demand and change.
Further, before step S1, the surface to be welded of surface to be welded and metal material to CFRTP carries out at surface respectively
Reason.
Further, the surface treatment are as follows: surface polishing, surface-texturing or surface-functionalized, the purpose on surface are
The weld strength of reinforcing material.
A kind of device for CFRTP and the weldering of metal docking laser, including laser, resin material, support frame and cylinder；
Support frame is for placing CFRTP and metalwork to be welded；
Resin material adds between the surface to be welded of CFRTP and the surface to be welded of metalwork, and the surface to be welded of CFRTP and gold
Belong to the surface to be welded docking of material；
Cylinder connects CFRTP and/or metalwork, for providing pressure along abutting direction in the welding process.
When working condition, CFRTP to be welded and metalwork are placed on the support frame, and resin material is arranged in CFRTP's
Between surface to be welded and the surface to be welded of metalwork, and the surface to be welded of CFRTP is docked with the surface to be welded of metal material.Cylinder is opened,
Pressure is provided along abutting direction, then opens laser, laser beam heats metalwork side is closed to resin material melted by heat
It closes laser, after hardening of resin to be melted, closes cylinder, complete welding.
The invention has the following advantages:
Compared with prior art, the present invention carries out laser focusing in metal side, and laser beam is heated in metal side, due to
Heat transfer, heat transfer to resin material, resin material melted by heat weld together CFRTP and metal after cooling, improve
Weld strength, and in this process, apply certain external force along abutting direction, under external force further improves
The weld strength and binding force of CFRTP and metal realize under the booster action without other reinforcement materials between CFRTP and metal
High-intensitive butt welding, process flow is simple, joint quality mitigate.
Currently with the connection that laser carries out CFRTP and metal material be all utilize lap-welded principle realize (such as
The butt welding between CFRTP is realized in patent application 201510014414.4 using overlap welding principle), there are no laser for the prior art
The scheme of direct butt welding.Scheme described in patent application 201510014414.4 is real by way of adding fixing piece
Welding between existing composite material directly utilizes laser present invention firstly provides in the case where not adding any auxiliary material
Realize the connection between metal and composite material, joint quality mitigates.
Detailed description of the invention
Fig. 1 is the docking laser weldering schematic diagram of CFRTP and metal material of the present invention；
Fig. 2 is apparatus structure schematic diagram of the present invention for CFRTP and the weldering of metal docking laser.
Appended drawing reference in Fig. 1 and Fig. 2 are as follows: CFRTP1, metal 2, resin material 3, laser beam 4, pedestal 5, support frame 6,
Cylinder 7.
Specific embodiment
The present invention is described further combined with specific embodiments below.
Embodiment 1
In the present embodiment, the docking laser welder of CFRTP and metal is as shown in Fig. 2, include pedestal 5, support frame 6, gas
Cylinder 7, laser 4 and resin material 3.
Pedestal 5 is used to support whole device.
Support frame 6 is for placing CFRTP and metalwork to be welded.
Resin material 3 is arranged between the surface to be welded of CFRTP and the surface to be welded of metalwork 2, and the surface to be welded of CFRTP with
The surface to be welded of metalwork docks；
Cylinder 7 connects CFRTP, for along the abutting direction of CFRTP, providing pressure to interface in the welding process.
In the present embodiment, as shown in Figure 1, carrying out docking laser weldering to CFRTP and Al alloy parts using the device, specifically
It is as follows:
(1) CFRTP1 is handled through surface-texturing, Al alloy parts 2 through surface grinding process, by the CFRTP1 of welding with
Al alloy parts 2 are placed on support frame 6, and the surface to be welded of CFRTP1 is docked with the surface to be welded of Al alloy parts 2, and
The resin material PPS3 with a thickness of 0.1mm, aluminium alloy work are added between the surface to be welded of CFRTP1 and the surface to be welded of Al alloy parts 2
One end of part 2 is fixed；
(2) cylinder 7 is opened, and along the abutting direction of CFRTP1, provides pressure to interface, laser beam 4 heats aluminium alloy
Workpiece 2 is close to the side of potting resin, and by heat transfer, resin material PPS3 melted by heat closes laser beam 4, tree to be melted
Cylinder 7 is closed after rouge cooled and solidified, and CFRTP1 is docked with Al alloy parts 2 and is welded together.
Embodiment 2
In the present embodiment, the docking laser welder of CFRTP and metal is substantially the same manner as Example 1, the difference is that gas
Cylinder is connected to metalwork, for along the abutting direction of metalwork, providing pressure to interface in the welding process.
In the present embodiment, docking laser weldering is carried out to CFRTP and titanium alloy workpiece using the device, specific as follows:
(1) CFRTP closes the CFRTP of welding and titanium through surface grinding process through surface-functionalized processing, titanium alloy workpiece
Metal working part is placed on the support frame, and the surface to be welded of CFRTP is docked with the surface to be welded of titanium alloy workpiece, and in the to be welded of CFRTP
Addition is fixed between face and the surface to be welded of titanium alloy workpiece with a thickness of one end of the resin material PEEK, CFRTP of 1mm；
(2) cylinder is opened, and along the abutting direction of titanium alloy, provides pressure, laser beam heats titanium alloy work to interface
Part closes laser beam, resin to be melted to resin material PEEK melted by heat close to the side of potting resin, by heat transfer
Cylinder is closed after cooled and solidified, and CFRTP is docked with titanium alloy workpiece and is welded together.
Embodiment 3
In the present embodiment, the docking laser welder of CFRTP and metal is substantially the same manner as Example 1, the difference is that gas
Cylinder is connected to CFRTP and metalwork, in the welding process along the abutting direction of CFRTP, metalwork, to interface
Pressure is provided.
In the present embodiment, docking laser weldering is carried out to CFRTP and stainless steel work-piece using the device, specific as follows:
(1) CFRTP is through surface-functionalized processing, stainless steel work-piece through surface grinding process, by the CFRTP of welding with it is stainless
Steel workpiece is placed on the support frame, and the surface to be welded of CFRTP is docked with the surface to be welded of stainless steel work-piece, and in the to be welded of CFRTP
The resin material PA with a thickness of 0.1mm is added between face and the surface to be welded of stainless steel work-piece；
(2) cylinder is opened, and respectively along the abutting direction of CFRTP, stainless steel, provides pressure to interface, laser beam adds
Hot stainless steel work-piece closes laser beam to resin material PA melted by heat close to the side of potting resin, by heat transfer, to
Cylinder is closed after fusing resin cooled and solidified, CFRTP is docked with stainless steel work-piece and is welded together.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Belong to those skilled in the art in the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of, all answers
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (7)
1. the docking laser soldering method of a kind of CFRTP and metal material, which comprises the following steps:
S1, the surface to be welded of CFRTP is docked with the surface to be welded of metal material, and the surface to be welded of CFRTP and metal material to
Resin material is added between the face of weld；
S2, along abutting direction, apply pressure in the side CFRTP or/and metal material side, using laser beam heats metal material,
By heat transfer, resin material is melted, is then cooled and solidified.
2. docking laser soldering method according to claim 1, which is characterized in that the metal material is selected from stainless steel, carbon
Steel, galvanized steel, aluminium alloy, titanium alloy, magnesium alloy, high temperature alloy.
3. docking laser soldering method according to claim 1, which is characterized in that the resin material be selected from PPS, PA,
PEEK、PE。
4. docking laser soldering method according to claim 1, which is characterized in that the thickness of the resin material 0.01~
Between 1mm.
5. docking laser soldering method according to claim 1, which is characterized in that the laser beam focus is leaned in metal material
The side of nearly potting resin.
6. docking laser soldering method according to claim 1, which is characterized in that before step S1, to the to be welded of CFRTP
The surface to be welded of face and metal material is surface-treated respectively.
7. docking laser soldering method according to claim 6, which is characterized in that the surface treatment are as follows: surface polishing, table
Plane texture is surface-functionalized.
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| CN201811565398.8A CN109483054A (en) | 2018-12-20 | 2018-12-20 | A kind of docking laser soldering method of CFRTP and metal material |
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| CN201811565398.8A CN109483054A (en) | 2018-12-20 | 2018-12-20 | A kind of docking laser soldering method of CFRTP and metal material |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110126283A (en) * | 2019-05-24 | 2019-08-16 | 南京航空航天大学 | A kind of laser welding with filler wire method and equipment for thermoplastic composite docking structure |
| CN110696379A (en) * | 2019-11-13 | 2020-01-17 | 南京航空航天大学 | Laser-adhesive joint composite connection method for thermoplastic composite material and aluminum alloy single lap joint structure |
| CN112404712A (en) * | 2019-08-20 | 2021-02-26 | 南京航空航天大学 | Gas cooling device and method for laser connection of thermoplastic composite material and metal |
| CN113146039A (en) * | 2021-04-28 | 2021-07-23 | 南昌大学 | Preparation and welding method of intermediate layer composite powder for laser welding of magnesium alloy steel |
| CN113305437A (en) * | 2021-06-04 | 2021-08-27 | 扬州大学 | Thermoplastic composite material-metal laser welding method |
| CN113705047A (en) * | 2021-08-25 | 2021-11-26 | 南京航空航天大学 | CFRTP interference connection hole circumferential stress distribution calculation method under tensile load |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110126283A (en) * | 2019-05-24 | 2019-08-16 | 南京航空航天大学 | A kind of laser welding with filler wire method and equipment for thermoplastic composite docking structure |
| CN112404712A (en) * | 2019-08-20 | 2021-02-26 | 南京航空航天大学 | Gas cooling device and method for laser connection of thermoplastic composite material and metal |
| CN110696379A (en) * | 2019-11-13 | 2020-01-17 | 南京航空航天大学 | Laser-adhesive joint composite connection method for thermoplastic composite material and aluminum alloy single lap joint structure |
| CN113146039A (en) * | 2021-04-28 | 2021-07-23 | 南昌大学 | Preparation and welding method of intermediate layer composite powder for laser welding of magnesium alloy steel |
| CN113146039B (en) * | 2021-04-28 | 2022-10-28 | 南昌大学 | Preparation and welding method of intermediate layer composite powder for laser welding of magnesium alloy steel |
| CN113305437A (en) * | 2021-06-04 | 2021-08-27 | 扬州大学 | Thermoplastic composite material-metal laser welding method |
| CN113705047A (en) * | 2021-08-25 | 2021-11-26 | 南京航空航天大学 | CFRTP interference connection hole circumferential stress distribution calculation method under tensile load |
| CN113705047B (en) * | 2021-08-25 | 2024-04-05 | 南京航空航天大学 | CFRTP interference connection hole circumferential stress distribution calculation method under tensile load |
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