CN109702428A - A kind of method of spot welding and the compound raising Dissimilar Materials Aluminium bonding strength of self-pierce riveting - Google Patents
A kind of method of spot welding and the compound raising Dissimilar Materials Aluminium bonding strength of self-pierce riveting Download PDFInfo
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- CN109702428A CN109702428A CN201910142107.2A CN201910142107A CN109702428A CN 109702428 A CN109702428 A CN 109702428A CN 201910142107 A CN201910142107 A CN 201910142107A CN 109702428 A CN109702428 A CN 109702428A
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Abstract
The present invention provides a kind of compound methods for improving Dissimilar Materials Aluminium bonding strength of spot welding and self-pierce riveting, comprising the following steps: Dissimilar Materials Aluminium carries out self-pierce riveting connection first, then carries out spot welding connection, forms FS final spice using two kinds of process combinings.Method disclosed by the invention has many advantages, such as that strong operability, bonding strength are high.
Description
Technical field
The present invention relates to interconnection technique fields, more particularly to a kind of spot welding and the compound raising Dissimilar Materials Aluminium of self-pierce riveting
The method of bonding strength.
Background technique
For a long time, most of body of a motor car is manufactured by steel, this is because steel have at low cost, formability
The advantages that good and intensity is high and is suitble to welding, wherein resistance spot welding (i.e. spot welding) is in automobile body manufacture process using the widest
One of general Joining Technology.However, being wanted with people are energy-saving to fuel vehicle and new energy electric motor vehicle is continued a journey etc.
Continuous improvement is asked, automotive light weight technology is increasingly paid attention to the scheme for reducing vehicle body self weight, and density is introduced in steel body
Low aluminum alloy materials are then very reasonable lightweight directions, so automobile future will use aluminum-steel hybrid vehicle body.Another party
Face, for aluminum alloy materials while reducing car body weight, the physical properties such as resistance is small, thermal conductivity is high make aluminium alloy pinpoint welding very
Difficulty, the connectivity problem of steel Al dissimilar materials constrains the popularization and application of aluminium alloy, therefore it has been developed that self-pierce riveting connects
Technology uses semitubular rivet to penetrate upper layer workpiece and realizes the opening of rivet pipe leg in lower layer's inside workpiece and then form lock
It is many to have without pre-drilled cavity, be not only restricted to aluminum alloy materials physical property and may be implemented multi-layer board connection etc. for riveting knot structure
Advantage.However, spot welding is difficult to aluminum alloy materials welding, and single for the steel Al dissimilar materials in mixing automobile body manufacture process
Intensity is lower sometimes up to less than production engineering specifications when pure self-pierce riveting connects, therefore, it is necessary to propose a kind of reasonable spot welding
With the compound method for improving Dissimilar Materials Aluminium bonding strength of self-pierce riveting.
Summary of the invention
The purpose of the present invention is to provide the compound sides for improving Dissimilar Materials Aluminium bonding strength of a kind of spot welding and self-pierce riveting
Method solves the disadvantages such as aluminium alloy existing for existing mixing vehicle body is difficult to spot welding and self-pierce riveting bonding strength is low.
According to technical solution provided by the invention, can be carried out according to following scheme.
Optionally, the Dissimilar Materials Aluminium carries out self-pierce riveting connection first, then carries out spot welding connection, and two kinds of techniques are multiple
High-strength work piece connector is prepared after conjunction.
Optionally, the Dissimilar Materials Aluminium is Strip or profile and thickness is 0.8~8mm, wherein described
Aluminum material include 2 line aluminium alloy materials, 3 line aluminium alloy materials, 5 line aluminium alloy materials, 6 line aluminium alloy materials and 7 be aluminium close
Golden material, the Steel material include all kinds of high-strength vehicle steel alloys.
Optionally, self-pierce riveting connection must make upper layer workpiece using aluminium alloy, and steel alloy makees the form of lower layer's workpiece,
If workpiece is more than 2 layers, then it must assure that lower layer's workpiece is alloy steel material.
Optionally, the rivet material used when the self-pierce riveting connects is carbon steel or steel alloy.
Optionally, the Dissimilar Materials Aluminium can first carry out a step before the self-pierce riveting connection according to actual needs
The splicing process of coated structure glue.
Optionally, the spot welding is connected as direct welding, wherein and a termination electrode connects with the manufactured head of the self-pierce riveting,
Another termination electrode connects with " back buckle " that self-pierce riveting head is formed on lower layer's steel workpiece, then welding.
Optionally, the electrode tip diameter of spot welding is not more than manufactured head diameter.
Optionally, prepared high-strength work piece is car body component.
The present invention has strong operability, bonding strength height etc. excellent compared to existing spot welding and self-pierce riveting interconnection technique
Point.
Specific embodiment
By the way that examples illustrate the present invention, but the present invention is not limited by the embodiment.
Embodiment 1: 6061 aluminum alloy materials of 0.8mm thickness and the DX51 galvanized sheet overlap joint of 3mm thickness are selected, are carried out first certainly
Sleeving and riveting riveting, riveting use steel rivet and rivet diameter 3.0mm, and manufactured head diameter 5.1mm carries out point of resistance again after riveting
Weldering, electrode tip diameter 5.0mm, galvanization carries out resistance spot welding after electrode presses, and eventually forms connector, it is total that vehicle body collision prevention girders are made
At.
Embodiment 2: 6061 aluminum alloy materials of 1.2mm thickness and the DP500 galvanized sheet overlap joint of 4mm thickness are selected, are carried out first
Self-pierce riveting riveting, riveting use steel rivet and the length of rivet 5.0mm, and manufactured head diameter 7.5mm carries out point of resistance again after riveting
Weldering, electrode tip diameter 7.5mm, galvanization carries out resistance spot welding after electrode presses, and eventually forms connector.
Embodiment 3: 6061 aluminum alloy materials of 1.2mm thickness and the HCA340LA steel plate overlap joint of 2mm thickness are selected, are used first
Structure glue is glued two kinds of materials, after adhesive curing, carries out self-pierce riveting riveting again to two kinds of materials, riveting uses steel
Rivet and the length of rivet 3.0mm, manufactured head diameter 4.5mm carry out resistance spot welding, electrode tip diameter 4.5mm after riveting, electrode is applied
Galvanization carries out resistance spot welding after pressure, eventually forms connector.
Claims (8)
1. a kind of spot welding and the compound method for improving Dissimilar Materials Aluminium bonding strength of self-pierce riveting, which is characterized in that the aluminum steel
Dissimilar material carries out self-pierce riveting connection first, then carries out spot welding connection, prepares high-strength work piece connector after two kinds of process combinings.
2. the method according to claim 1, wherein the Dissimilar Materials Aluminium is Strip or profile and thickness
Degree is 0.8~8mm, therein, and aluminium includes 2 line aluminium alloy materials, 3 line aluminium alloy materials, 5 line aluminium alloy materials, 6 is aluminium
Alloy material and 7 line aluminium alloy materials, steel include all kinds of high-strength vehicle steel alloys.
3. the method according to claim 1, wherein the self-pierce riveting connection must make upper layer work using aluminium alloy
Part, steel alloy make the form of lower layer's workpiece, if workpiece is more than 2 layers, then must assure that lower layer's workpiece is alloy steel material.
4. method according to claim 1-3, which is characterized in that the rivet material that the self-pierce riveting uses when connecting
Matter is carbon steel or steel alloy.
5. the method according to claim 1, wherein the Dissimilar Materials Aluminium is connected in the self-pierce riveting
The preceding splicing process that can first carry out a step coated structure glue according to actual needs.
6. the method according to claim 1, wherein the spot welding is connected as direct welding, wherein a termination electrode
Connect with the manufactured head of the self-pierce riveting, " back buckle " that another termination electrode and self-pierce riveting head are formed on lower layer's steel workpiece
Connect, then welding.
7. method according to claim 1 or 6, which is characterized in that the electrode tip diameter of spot welding is straight no more than manufactured head
Diameter.
8. the method according to claim 1, wherein prepared high-strength work piece is car body component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910142107.2A CN109702428A (en) | 2019-02-26 | 2019-02-26 | A kind of method of spot welding and the compound raising Dissimilar Materials Aluminium bonding strength of self-pierce riveting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910142107.2A CN109702428A (en) | 2019-02-26 | 2019-02-26 | A kind of method of spot welding and the compound raising Dissimilar Materials Aluminium bonding strength of self-pierce riveting |
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| CN109702428A true CN109702428A (en) | 2019-05-03 |
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| CN201910142107.2A Pending CN109702428A (en) | 2019-02-26 | 2019-02-26 | A kind of method of spot welding and the compound raising Dissimilar Materials Aluminium bonding strength of self-pierce riveting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114603075A (en) * | 2022-03-25 | 2022-06-10 | 本钢板材股份有限公司 | Method for connecting ultrahigh-strength steel and aluminum alloy by using self-piercing riveting technology |
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| CN1706585A (en) * | 2004-06-11 | 2005-12-14 | 株式会社神户制钢所 | Dissimilar material weld joint formed by joining iron type material and aluminum type material, and weld joining method |
| CN101590598A (en) * | 2008-05-28 | 2009-12-02 | 株式会社神户制钢所 | The joint method of the foreign material of steel and light-alloy material |
| CN101716644A (en) * | 2008-10-08 | 2010-06-02 | 通用汽车环球科技运作公司 | Method for attaching magnesium panels using self-piercing rivet |
| CN101890564A (en) * | 2010-07-06 | 2010-11-24 | 上海交通大学 | Special metal resistance rivet welding device |
| CN103240564A (en) * | 2013-04-26 | 2013-08-14 | 上海交通大学 | Machinery-solid phase composite connecting device and machinery-solid phase composite connecting method |
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2019
- 2019-02-26 CN CN201910142107.2A patent/CN109702428A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1706585A (en) * | 2004-06-11 | 2005-12-14 | 株式会社神户制钢所 | Dissimilar material weld joint formed by joining iron type material and aluminum type material, and weld joining method |
| CN101590598A (en) * | 2008-05-28 | 2009-12-02 | 株式会社神户制钢所 | The joint method of the foreign material of steel and light-alloy material |
| CN101716644A (en) * | 2008-10-08 | 2010-06-02 | 通用汽车环球科技运作公司 | Method for attaching magnesium panels using self-piercing rivet |
| CN101890564A (en) * | 2010-07-06 | 2010-11-24 | 上海交通大学 | Special metal resistance rivet welding device |
| CN103240564A (en) * | 2013-04-26 | 2013-08-14 | 上海交通大学 | Machinery-solid phase composite connecting device and machinery-solid phase composite connecting method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114603075A (en) * | 2022-03-25 | 2022-06-10 | 本钢板材股份有限公司 | Method for connecting ultrahigh-strength steel and aluminum alloy by using self-piercing riveting technology |
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Application publication date: 20190503 |
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