CN110421241A - A kind of high energy beam welding method of bimetallic laminated composite plate - Google Patents
A kind of high energy beam welding method of bimetallic laminated composite plate Download PDFInfo
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- CN110421241A CN110421241A CN201910733182.6A CN201910733182A CN110421241A CN 110421241 A CN110421241 A CN 110421241A CN 201910733182 A CN201910733182 A CN 201910733182A CN 110421241 A CN110421241 A CN 110421241A
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- composite plate
- high energy
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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
- B23K10/00—Welding or cutting by means of a plasma
- B23K10/02—Plasma 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
- B23K15/00—Electron-beam welding or cutting
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Welding Or Cutting Using Electron Beams (AREA)
- Laser Beam Processing (AREA)
Abstract
A kind of high energy beam welding method of bimetallic laminated composite plate, the following steps are included: (1) determines the thickness h 2 of the material of bimetallic laminated composite plate to be welded and the thickness h 1 of compound plate and substrate, the dust and greasy dirt for removing composite plate interface, keep the cleaning of interface；(2) composite plate to be welded is subjected to docking group pair, it is welded using high energy beam heat source, guarantee that the range of fusion penetration H1 is 1.0h1≤H1≤1.15h1；(3) composite plate for being soldered compound plate in step (2) is overturn and is fixed, the welding of substrate portion is carried out using high energy beam heat source, and guarantee that the range of fusion penetration H2 is 0.9h2≤H2≤1.0h2, and h1+h2+0.30mm >=H1+H2 >=h1+h2+0.01mm, complete the high energy beam welding of double-metal layer composite plate.The present invention solves the problems, such as existing high energy beam welding technology, and compound plate dilution is serious in bimetallic laminated composite plate one side welding with back formation, significantly affects connector comprehensive performance, with under the conditions of being not necessarily to finished edge, moreover it is possible to be substantially reduced compound plate dilution rate, improve the advantages of layered metal composite plate joint performance.
Description
Technical field
The invention belongs to high energy beam welding technical field more particularly to a kind of high energy beam weldings of bimetallic laminated composite plate
Method.
Background technique
Layered metal composite plate is to pass through the modes such as forging and stamping, explosive welding, preparation by two layers, multilayer different metal plate
Sandwich, wherein the plate of thinner thickness is commonly referred to as compound plate, and usual price is more expensive, and main function is to improve
The performances such as conductive, thermally conductive, corrosion-resistant of composite board；Relatively thick plate is referred to as substrate, and general cost is lower, main to make
With being to reduce composite plate weight, improve intensity etc..Therefore, composite plate often there is a kind of independent metal material not have comprehensive
Performance is closed, so by the concern of the industrial circles such as automobile, aerospace.However, during the industrial applications of composite plate,
Inevitably it is related to its Welding Problems.
Currently, the welding technique for composite plate seriously affects in order to avoid dilution rate is higher in the welding process for compound plate
The problem of its comprehensive performance, composite board welding, which connects, usually requires first bevel, is then carried out by the way of multilayer, multi-pass welding to it
Welding.I.e. firstly, in composite plate bevel；Then, it is welded first from (compound plate) at the top of composite plate；Then at an upper portion thereof
Weld one layer of transition metal；Last welding substrate again；Finally, the welding of composite plate is completed.Bevelled mode is on the one hand big
Machining cost is increased greatly, on the other hand the dosage of added material (welding wire) is also significantly increased, to considerably increase material
Expect cost.In addition, needing to add transition zone in welding structure, reduction intermetallic compound can be played to a certain extent
It formed, reduce the effect of compound plate dilution rate, but how carried out the correct selection of buffer layer material, rationally design and accurately add
Add, is still urgent problem to be solved in current composite plate welding.
High energy beam welding has energy density high, and controllability waits by force remarkable advantages, has always been considered as being a kind of potentially solution
The certainly technology of laminated composite plate Welding Problems.However during carrying out the one side welding with back formation of layered metal composite plate,
Although the good connector of forming can be obtained, excessively high heat input can cause to generate fierce change between substrate and compound plate
Reaction is closed, is destroyed so as to cause the compound plate part in composite plate by serious dilution, even, thus losing functionality, and multiple
After combination reaction occurs between plate and substrate, the intermetallic compound largely with hard, crisp characteristic is generated, often to serious
Reduce the performance of connector.
It to sum up, can be without finished edge and without using the item of transition metal if in high energy beam welding
Under part, moreover it is possible to greatly reduce the formation of intermetallic compound in layered metal composite plate connector, while effectively avoid the dilute of compound plate
Rate problem is released, for pushing high energy beam welding technology in the industrial applications of layered metal composite plate welding field with important
Meaning.
Summary of the invention
In view of the deficienciess of the prior art, the present invention provides a kind of high energy beam welding side of bimetallic laminated composite plate
It is serious, obvious to solve the compound plate dilution in bimetallic laminated composite plate one side welding with back formation of existing high energy beam welding technology for method
The problem of influencing connector comprehensive performance, has under conditions of being not necessarily to finished edge, moreover it is possible to be substantially reduced compound plate dilution rate, improve
The advantages of layered metal composite plate joint performance.
The invention adopts the following technical scheme:
A kind of high energy beam welding method of bimetallic laminated composite plate, comprising the following steps:
Step 1: prepare before high energy beam weldering welding
It determines the thickness h 2 of the material of bimetallic laminated composite plate to be welded and the thickness h 1 of compound plate and substrate, removes multiple
The dust and greasy dirt of plywood interface, keep the cleaning of interface；
Step 2: the welding of compound plate in composite plate
Composite plate to be welded is subjected to docking group pair, group is less than high energy beam heat source hot spot to clearance requirement or high energy beam current is straight
Diameter, and make compound plate side towards high energy beam heat source, then it is welded using high energy beam heat source, is realized multiple in composite plate
The welding of plate guarantees that the range of fusion penetration H1 is 1.0h1≤H1≤1.15h1；
Step 3: the welding of substrate in composite plate
It will be soldered the composite plate overturning of compound plate in step 2, after fixing, substrate portion is carried out using high energy beam heat source
Welding, and guarantee that the range of fusion penetration H2 is 0.9h2≤H2≤1.0h2, and h1+h2+0.30mm >=H1+H2 >=h1+h2+
0.01mm completes the high energy beam welding of double-metal layer composite plate.
The high energy beam heat source, including plasma, laser and electron beam heat source.
The beneficial effects of the present invention are:
1, by first welding two step welding methods of compound plate welding substrate again, the chemical combination of compound plate and substrate can be significantly reduced
Reaction, hardly reduces the dilution rate of compound plate, and the production quantity of compound in connector can be greatly reduced, and improves the synthesis of connector
Performance.
2, the high energy beam welding method of a kind of bimetallic laminated composite plate proposed by the present invention, can remove conventional composite plate from
Bevelled process procedure before welding is welded, and any packing material is not needed, also there is technique to assemble simple, welding process side
Just, feature reliably, at low cost, connector comprehensive performance is high, thus there is extensive prospects for commercial application.
Detailed description of the invention
Fig. 1 is welding process stage schematic diagram schematic diagram of the present invention；
Fig. 2 is that conventional high energy beam single-run welding two-sides forming welds schematic diagram；
Fig. 3 is the macro surface forming micrograph of the 6.0mm thickness Solder for Al-Cu Joint Welding composite plate connector obtained using the present invention；
The 6.0mm thickness Solder for Al-Cu Joint Welding composite plate connector that Fig. 4 is obtained using conventional high energy beam single-run welding two-sides forming method welding
Macro surface shape micrograph；
Wherein,
1- compound plate, 2- substrate.
Specific embodiment
In order to preferably explain the present invention, in order to understand, with reference to the accompanying drawing, by specific embodiment, to this hair
Bright technical solution and effect is described in detail.
Embodiment 1
As shown in Figure 1, welding one kind using a kind of high energy beam welding method of bimetallic laminated composite plate of the invention
6.0mm thickness aluminum-copper duplex metal laminated composite plate, wherein aluminum substrate thickness h 2 is 4.8mm, copper compound plate thickness h 1 is 1.2mm, this reality
High energy beam heat source in example is applied to be welded using electron beam, specifically includes the following steps:
Step 1: prepare before high energy beam weldering welding
The dust and greasy dirt for removing composite plate interface, keep the cleaning of interface；
Step 2: the welding of copper compound plate in Solder for Al-Cu Joint Welding composite plate
Solder for Al-Cu Joint Welding composite plate to be welded is subjected to close docking group pair, and makes 1 side of compound plate towards high energy beam heat source,
Then it is welded using high energy beam heat source, realizes the welding of compound plate 1 in composite plate, guarantee that the range of fusion penetration H1 is
1.0h1≤H1≤1.15h1, the welding parameter used in the present embodiment for weldingvoltage is 60kV, welding current 37mA, welding
Speed 280mm/min, the fusion penetration H1 of obtained Solder for Al-Cu Joint Welding composite plate connector copper compound plate side are 1.3mm, meet 1.0h1≤H1≤
1.15h1, i.e. 1.2mm≤H1≤1.38mm requirement.
Step 3: the composite plate that compound plate 1 has been soldered in step 2 is overturn, and after fixing, is carried out using high energy beam heat source
The welding of aluminum substrate 2 in Solder for Al-Cu Joint Welding composite plate, and guarantee that the range of fusion penetration H2 is 0.9h2≤H2≤1.0h2, and h1+h2+
0.30mm≥H1+H2≥h1+h2+0.01mm；The welding parameter used in the present embodiment for weldingvoltage is 60kV, welding current
The fusion penetration H2 of 42mA, speed of welding 280mm/min, obtained 2 side of composite plate connector aluminum substrate reach 4.78mm, meet 0.9h2
≤ H2≤1.0h2, i.e. 4.32mm≤H2≤4.8mm requirement, and ensure that h1+h2+0.30mm >=H1+H2 >=h1+h2+
0.01mm, i.e. 6.3mm >=6.08mm >=6.01mm requirement.
Finally, the high energy beam welding of double-metal layer composite plate is completed.
By above-mentioned welding process, the contact cross-section pattern of the aluminum-copper duplex metal composite plate of acquisition is as shown in figure 3, by scheming
As it can be seen that copper cladding is not destroyed in postwelding, almost without dilution phenomenon appearance, also change almost without between metal in the interface of connector
It closes object to occur, joint quality is good.
In order to preferably compare the present invention with the prior art, the present embodiment enumerates comparative example simultaneously, using one kind
The method of conventional high energy beam single-run welding two-sides forming is welded, specifically includes the following steps:
Step 1: welding preparation
Prepare the aluminum substrate of two pieces of 4.8mm thickness and the 6.0mm composite plate of the copper compound plate composition with a thickness of 1.2mm, removes multiple
The dust and greasy dirt of plywood interface, keep the cleaning of interface.
Step 2: conventional high energy beam single-run welding two-sides forming method welding
Electron beam is located at right above interface and is welded, technological parameter is as follows: weldingvoltage 60kV, welding electricity
52mA, speed of welding 280mm/min are flowed, as shown in Fig. 2, guaranteeing workpiece by complete penetration.
By above-mentioned welding process, the contact cross-section pattern of the aluminum-copper duplex metal composite plate of acquisition is as shown in figure 4, by scheming
As it can be seen that copper cladding is almost destroyed entirely in postwelding, one layer of continuous intermetallic compound transition layer is generated in the interface of connector,
The quality of composite plate connector is seriously affected.
Claims (2)
1. a kind of high energy beam welding method of bimetallic laminated composite plate, it is characterised in that: the following steps are included:
Step 1: prepare before high energy beam weldering welding
It determines the thickness h 2 of the material of bimetallic laminated composite plate to be welded and the thickness h 1 of compound plate (1) and substrate (2), removes
The dust and greasy dirt of composite plate interface, keep the cleaning of interface；
Step 2: the welding of compound plate (1) in composite plate
Composite plate to be welded is subjected to docking group pair, group is less than high energy beam heat source hot spot or high energy beam current diameter to clearance requirement,
And makes compound plate (1) side towards high energy beam heat source, then it is welded using high energy beam heat source, realize multiple in composite plate
The welding of plate (1) guarantees that the range of fusion penetration H1 is 1.0h1≤H1≤1.15h1；
Step 3: the welding of substrate (2) in composite plate
It will be soldered the composite plate overturning of compound plate (1) in step 2, after fixing, substrate (2) portion is carried out using high energy beam heat source
Point welding, and guarantee that the range of fusion penetration H2 is 0.9h2≤H2≤1.0h2, and h1+h2+0.30mm >=H1+H2 >=h1+h2+
0.01mm completes the high energy beam welding of double-metal layer composite plate.
2. a kind of high energy beam welding method of bimetallic laminated composite plate according to claim 1, it is characterised in that: described
High energy beam heat source, including plasma, laser and electron beam heat source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910733182.6A CN110421241B (en) | 2019-08-09 | 2019-08-09 | High-energy beam welding method for bimetal layered composite board |
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| CN201910733182.6A CN110421241B (en) | 2019-08-09 | 2019-08-09 | High-energy beam welding method for bimetal layered composite board |
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| CN110421241B CN110421241B (en) | 2021-01-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115255595A (en) * | 2022-08-17 | 2022-11-01 | 中国航空制造技术研究院 | Method for determining electron beam welding focusing current of double-layer plate structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115255595A (en) * | 2022-08-17 | 2022-11-01 | 中国航空制造技术研究院 | Method for determining electron beam welding focusing current of double-layer plate structure |
| CN115255595B (en) * | 2022-08-17 | 2023-08-22 | 中国航空制造技术研究院 | Electron beam welding focusing current determining method for double-layer plate structure |
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