CN109352167A - Different alloys composite construction connection method - Google Patents
Different alloys composite construction connection method Download PDFInfo
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- CN109352167A CN109352167A CN201811396900.7A CN201811396900A CN109352167A CN 109352167 A CN109352167 A CN 109352167A CN 201811396900 A CN201811396900 A CN 201811396900A CN 109352167 A CN109352167 A CN 109352167A
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- alloy
- bulge
- structure body
- different alloys
- connection 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
Abstract
The present invention relates to welding technology fields, the specifically connection method of different alloys composite construction.This method comprises: the connecting portion on the first alloy structure body processes bulge-structure；Groove structure compatible with the bulge-structure on the first described alloy structure body is processed in the connecting portion on second of alloy structure body, wherein the intensity of the first alloy structure body is bigger than the intensity of second of alloy structure body；Multiple strias are processed on the adaptation joint face of the bulge-structure on the first described alloy structure body；Using linear friction welding method, the bulge-structure is connect with the groove structure, squeezes into the metal material on second of alloy structure body in the stria on the first described alloy structure body.It is difficult to solve different alloys connection, and, Joint Reliability low problem poor in different alloys switching performance.
Description
Technical field
The present invention relates to welding technology fields, more particularly to different alloys composite construction connection method.
Background technique
For aircaft configuration under the premise of intensity meets requirement, loss of weight has the mobility and flexibility that improve aircraft
Very important strategic importance, the design of light-weighted structure is the hot spot of research, in lightweight structure design, aluminium alloy and
Titanium alloy is to be widely adopted the advantages that its high specific strength, high temperature resistant, anticorrosive and very high fracture toughness.It is heavy for mitigating
Measure, reduce cost and Special use performance and consider, make aluminium and titanium " making the best use of everything ", have complementary advantages, reach materials'use performance,
The balance of loss of weight and economic benefit.
Linear friction welding is solid phase connecting method, and Fundamentals of Welding are as shown in Figure 1, in welding process, one of workpiece
High-frequency reciprocating vibration, another workpiece contact with vibration workpiece under the effect of certain friction pressure and occur mutually to rub and generate to rub
Chafing, interface temperature quickly increase, and interface near field two sides parent metal softens and occur Plastic Flow, under friction pressure effect
It is extruded interface and forms overlap；After the Temperature Distribution of welding section, deformation reache a certain level, vibration workpiece quickly stops shaking
Dynamic, workpiece alignment simultaneously applies upsetting force, and interface two sides metal is linked together by phase counterdiffusion with recrystallization, and then completes
Entire welding process.
On aircaft configuration in aluminium alloy/titanium alloy composite component, titanium alloy part main function is load, aluminium alloy part
Mainly play interval action.Currently, the different material composite construction of titanium alloy/aluminium alloy generallys use the side of mechanical connection or melting welding connection
Method, wherein mechanical connection is there are complex structural designs, the problems such as construction weight is big and welded seal is not tight, in Oiltank structure
When, leakproofness is poor, the problems such as oil leak easily occurs, and bolt fastening structure leads to that structure is complicated, weight increases structure simultaneously
Reliability is low.For aluminium alloy/titanium alloy dissimilar materials since two kinds of material property parameter differences are larger, direct welding difficulty is very big,
When using melting welding connection method, in commissure, frangible compounds easy to form cause connector residual stress big and weld cracking etc.
Problem, joint quality are difficult to control.
Therefore, for the connection of intensity, the biggish not same material of thermophysical property difference, xenogenesis conjunction is inventor provided
Golden composite construction connection method, can be used for the linear friction welding of titanium alloy and aluminium alloy.
Summary of the invention
Different alloys composite construction connection method provided in an embodiment of the present invention solves different alloys connection difficulty, with
And, Joint Reliability low problem poor in different alloys switching performance.
The embodiment of the present invention proposes different alloys composite construction connection method, this method comprises:
Connecting portion on the first alloy structure body processes bulge-structure；
It processes in the connecting portion on second of alloy structure body and is tied with the protrusion on the first described alloy structure body
The compatible groove structure of structure, wherein the intensity of the first alloy structure body is stronger than second of alloy structure body
Degree is big；
Multiple strias are processed on the adaptation joint face of the bulge-structure on the first described alloy structure body；
Using linear friction welding method, the bulge-structure is connect with the groove structure, makes second of conjunction
Metal material on golden structural body is squeezed into the stria on the first described alloy structure body.
Preferably, the first described alloy structure body is titanium alloy material.
Preferably, second of alloy structure body is aluminum alloy material.
Preferably, the surface roughness of the bulge-structure is 3.2~25.
Preferably, when processing the bulge-structure on the first described alloy structure body, it is reserved with the processing of 2~5mm
Surplus, for compensating shortening amount when linear friction welding.
Preferably, the bulge-structure on the first described alloy structure body is V-type bulge-structure, second of alloy knot
Groove structure on structure body is compatible V-type groove structure.
Preferably, the bulge-structure on the first described alloy structure body is ladder type bulge-structure, second of alloy
Groove structure on structural body is compatible ladder type groove structure.
Preferably, along its thickness direction on the adaptation joint face of the bulge-structure, linear cutter goes out multiple described
Stria, the stria groove width are 0.2~1mm, and groove depth is 0.2~1mm.
Preferably, the slot pitch between the two neighboring stria is 2~3mm.
Preferably, the groove structure on second of alloy structure body is reserved with the machining allowance of 5~10mm, and described
The notch two sides plane width of groove structure is all larger than 5mm.
To sum up, different alloys composite construction connection method of the invention, mechanical joining methods compared with prior art, this hair
Difference characteristic between the bright ermal physics chemical property being utilized between different alloys, is designed to concaveconvex structure for connecting portion,
And stria is designed on the biggish structural body of intensity, using linear friction mode, the structural body of different alloys is connected, interconnecting piece
The concaveconvex structure design of position is simple and effective, does not need to add other connection attachmentes, is effectively reduced different alloys composite construction
Overall weight.In addition, the good airproof performance of jointing, intensity is high, high reliablity, without adding using connection method of the invention
Add other auxiliary materials that effective sealing can be realized, can be used for the connection of batch different alloys structural body.The connection method is unlimited
It is connected in titanium alloy material with the structural body of aluminum alloy material, it is biggish not to apply also for other intensity, thermophysical property difference
The connection of same material.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention
Attached drawing is briefly described, it should be apparent that, drawings described below is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is linear friction welding schematic illustration.
Fig. 2 is the different alloys composite construction connection method schematic diagram of an embodiment of the present invention.
Fig. 3 is the schematic diagram of the first alloy structure body surface face processing stria of V-type in Fig. 2.
Fig. 4 is the different alloys composite construction connection method schematic diagram of another embodiment of the invention.
Fig. 5 is the schematic diagram of the first alloy structure body surface face processing stria of ladder type in Fig. 4.
In figure:
Second of alloy structure body of 10-V type；The first alloy structure body of 11-V type；
Second of alloy structure body of 20- ladder type；The first alloy structure body of 21- ladder type.
Specific embodiment
Embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples.Following embodiment it is detailed
Thin description and attached drawing cannot be used to limit the scope of the invention for illustratively illustrating the principle of the present invention, i.e., of the invention
It is not limited to described embodiment, covers part, component and connection type under the premise of without departing from the spirit of the present invention
Any modification, replacement and improvement.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to accompanying drawings and in conjunction with the embodiments.
In the structure design of different alloys composite component, welding technique starts gradually to be answered with the advantage of its own
With.However, in engineering practice, due to the greatest differences between the ermal physics chemical property between titanium/aluminium different alloys, causing
Welding between the two is easy to produce frangible compounds and crackle in joint made by flame welding, limits it there is great difficulty
Further apply.
In view of the problems of the existing technology, the present invention provides a kind of different alloys composite construction connection methods.Referring to
Shown in Fig. 2~Fig. 5, different alloys composite construction connection method at least includes the following steps S110~step S140:
Step S110, the connecting portion on the first alloy structure body process bulge-structure.
Step S120, the connecting portion on second of alloy structure body process on the first described alloy structure body
The compatible groove structure of bulge-structure, wherein the intensity of the first alloy structure body is than second of alloy knot
The intensity of structure body is big.
Step S130 is processed multiple thin on the adaptation joint face of the bulge-structure on the first described alloy structure body
Slot.
The bulge-structure is connect by step S140 using linear friction welding method with the groove structure, is made described
Metal material on second of alloy structure body is squeezed into the stria on the first described alloy structure body.
Preferably, the first alloy structure body in the present invention is titanium alloy material, and second of alloy structure body is aluminium conjunction
Golden material.It should be noted that different alloys composite construction connection method of the invention is applicable not only to titanium alloy material and aluminium
The connection of the structural body of alloy material applies also for the connection of the biggish not same material of other intensity, thermophysical property difference.
Illustrate by taking the connection of titanium alloy material and the structural body of aluminum alloy material as an example, since the thermal expansion factor of titanium alloy is small
In aluminium alloy, titanium alloy intensity is greater than aluminium alloy, therefore the connection of the first alloy structure body in the biggish titanium alloy of intensity
Position processes bulge-structure, processes and its phase in the connecting portion of second of alloy structure body of the lesser aluminium alloy of intensity
The groove structure of cooperation, and the stria with certain length and depth is processed in bulge-structure, then pass through linear friction welding
The linear oscillator of machine, under friction pressure effect, second of alloy structure body generates the viscoplastic aluminium alloy of high temperature, most
The metal is extruded rubbing surface, and titanium alloy, which is bonded in close and titanium alloy side stria with aluminium alloy, after welding vibration stops fills up aluminium
Alloy plasticity metal, aluminium alloy is shunk after cooling, is formed compression inside welding point, can be effectively improved joint performance, and
Inside configuration connection area increases, the high reliablity of connector.
It is a kind of the first alloy structure body 11 of V-type and second of alloy structure body of V-type shown in referring to figs. 2 and 3
10 connection method.In this embodiment, the first alloy structure body 11 of V-type can be titanium alloy material, and second of V-type
Alloy structure body 10 can be aluminum alloy material.By being processed in the connecting portion of the first biggish alloy structure body of intensity
V-type bulge-structure forms the first alloy structure body 11 of V-type shown in Fig. 2, then in lower second of alloy knot of intensity
The connecting portion of structure body processes V-type groove structure compatible with V-type bulge-structure, forms second of V-type shown in Fig. 2
Alloy structure body 10.Due in welding process, the first 11 side shortening amount very little of alloy structure body of the V-type of titanium alloy material,
Therefore 2~5mm machining allowance is reserved in V-type bulge-structure, the surface roughness of V-type bulge-structure is between 3.2~25.Such as figure
Shown in 3, going out groove width with linear cutter on the male-type face two sides inclined-plane of V-type bulge-structure is 0.2~1mm, groove depth 0.2
Several strias of~1mm, the length of stria is along the thickness direction of bulge-structure, and the distance between two neighboring stria is 2
Between~3mm, it is therefore an objective to increase the connection area of the first alloy structure body and second of alloy structure body, it is strong to improve connector
Degree.In linear friction welding, the shortening amount of second of alloy structure body 10 of the V-type of aluminum alloy material is larger, processes groove
5~10mm machining allowance need to be stayed when structure, plane width is greater than at left and right sides of the notch of second of alloy structure body 10 of V-type
5mm。
It is a kind of the first alloy structure body 21 of ladder type and second of alloy structure of ladder type referring to fig. 4 and described in Fig. 5
The connection method of body 20.In this embodiment, the first alloy structure body 21 of ladder type can be titanium alloy material, and the of ladder type
Two kinds of alloy structure bodies 20 can be aluminum alloy material.By adding in the connecting portion of the first biggish alloy structure body of intensity
Work goes out ladder type bulge-structure, the first alloy structure body 21 of ladder type shown in Fig. 4 is formed, then lower second in intensity
The connecting portion of alloy structure body processes ladder type groove structure compatible with ladder type bulge-structure, forms ladder shown in Fig. 4
Second of alloy structure body 20 of type.Due in welding process, the first 21 side of alloy structure body of the ladder type of titanium alloy material
Shortening amount very little, therefore 2~5mm machining allowance is reserved in ladder type bulge-structure, the surface roughness of ladder type bulge-structure is 3.2
Between~25.As shown in figure 5, going out groove width with linear cutter on the inclined-plane of the male-type face two sides of ladder type bulge-structure and being
0.2~1mm, groove depth are several strias of 0.2~1mm, the length of stria along bulge-structure thickness direction, and it is two neighboring
The distance between stria is between 2~3mm, it is therefore an objective to increase the connection of the first alloy structure body and second of alloy structure body
Area improves strength of joint.In linear friction welding, the shortening of second of alloy structure body 20 of the ladder type of aluminum alloy material
Measure it is larger, process groove structure when need to stay 5~10mm machining allowance, notch of second of alloy structure body 20 of ladder type or so two
Side plane width is greater than 5mm.
It should be clear that the same or similar part may refer to each other between each embodiment in this specification,
The invention is not limited to particular step described above and shown in figure and structures.Also, for brevity, here
Omit the detailed description to known method technology.
The above description is only an example of the present application, is not restricted to the application.The scope of the present invention is not being departed from
In the case where to those skilled in the art, various changes and changes are possible in this application.It is all in spirit herein and
Any modification, equivalent replacement, improvement and so within principle, should be included within the scope of claims hereof.
Claims (10)
1. different alloys composite construction connection method characterized by comprising
Connecting portion on the first alloy structure body processes bulge-structure；
It is processed and the bulge-structure phase on the first described alloy structure body in the connecting portion on second of alloy structure body
The groove structure of adaptation, wherein the intensity of the first alloy structure body is bigger than the intensity of second of alloy structure body；
Multiple strias are processed on the adaptation joint face of the bulge-structure on the first described alloy structure body；
Using linear friction welding method, the bulge-structure is connect with the groove structure, makes second of alloy knot
Metal material on structure body is squeezed into the stria on the first described alloy structure body.
2. different alloys composite construction connection method according to claim 1, which is characterized in that the first described alloy knot
Structure body is titanium alloy material.
3. different alloys composite construction connection method according to claim 1 or 2, which is characterized in that second of conjunction
Golden structural body is aluminum alloy material.
4. different alloys composite construction connection method according to claim 1, which is characterized in that the table of the bulge-structure
Surface roughness is 3.2~25.
5. different alloys composite construction connection method according to claim 1, which is characterized in that in the first described alloy
When processing the bulge-structure on structural body, it is reserved with the machining allowance of 2~5mm, for compensating contracting when linear friction welding
The loss of quantity.
6. different alloys composite construction connection method according to claim 1, which is characterized in that the first described alloy knot
Bulge-structure on structure body is V-type bulge-structure, and the groove structure on second of alloy structure body is that compatible V-type is recessed
Slot structure.
7. different alloys composite construction connection method according to claim 1, which is characterized in that the first described alloy knot
Bulge-structure on structure body is ladder type bulge-structure, and the groove structure on second of alloy structure body is compatible ladder type
Groove structure.
8. different alloys composite construction connection method according to claim 1, which is characterized in that in the bulge-structure
It is adapted on joint face along its thickness direction, linear cutter goes out multiple strias, and the stria groove width is 0.2~1mm, groove depth
For 0.2~1mm.
9. different alloys composite construction connection method according to claim 1, which is characterized in that the two neighboring stria
Between slot pitch be 2~3mm.
10. different alloys composite construction connection method according to claim 1 or 5, which is characterized in that second of conjunction
Groove structure on golden structural body is reserved with the machining allowance of 5~10mm, and the notch two sides plane width of the groove structure
It is all larger than 5mm.
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| CN201811396900.7A CN109352167A (en) | 2018-11-22 | 2018-11-22 | Different alloys composite construction connection method |
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| CN201811396900.7A CN109352167A (en) | 2018-11-22 | 2018-11-22 | Different alloys composite construction connection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113084338A (en) * | 2021-04-09 | 2021-07-09 | 成都先进金属材料产业技术研究院股份有限公司 | Dissimilar metal connection structure and manufacturing method of transition leading belt for rolling titanium coil |
| CN113843494A (en) * | 2020-06-26 | 2021-12-28 | 通用汽车环球科技运作有限责任公司 | Torsional vibration damper and method of welding parts having dissimilar materials |
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