KR20190051315A - Electrically assisted pressure joining method - Google Patents

Electrically assisted pressure joining method Download PDF

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Publication number
KR20190051315A
KR20190051315A KR1020170146811A KR20170146811A KR20190051315A KR 20190051315 A KR20190051315 A KR 20190051315A KR 1020170146811 A KR1020170146811 A KR 1020170146811A KR 20170146811 A KR20170146811 A KR 20170146811A KR 20190051315 A KR20190051315 A KR 20190051315A
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KR
South Korea
Prior art keywords
metal member
metallic member
metal
electrically assisted
mechanically
Prior art date
Application number
KR1020170146811A
Other languages
Korean (ko)
Inventor
홍성태
반 러이 쩐
리영방
티 안 우옛 웬
한흥남
정혜진
Original Assignee
울산대학교 산학협력단
서울대학교산학협력단
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Application filed by 울산대학교 산학협력단, 서울대학교산학협력단 filed Critical 울산대학교 산학협력단
Priority to KR1020170146811A priority Critical patent/KR20190051315A/en
Publication of KR20190051315A publication Critical patent/KR20190051315A/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00Resistance welding; Severing by resistance heating
    • B23K11/30Features relating to electrodes
    • B23K11/3009Pressure electrodes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00Resistance welding; Severing by resistance heating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00Resistance welding; Severing by resistance heating
    • B23K11/002Resistance welding; Severing by resistance heating specially adapted for particular articles or work
    • B23K11/004Welding of a small piece to a great or broad piece
    • B23K11/0066Riveting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00Resistance welding; Severing by resistance heating
    • B23K11/30Features relating to electrodes

Abstract

The present invention relates to an electrically assisted pressure joining method which uses an electrically assisted pressure joining apparatus, which comprises: an electrode unit; a pressurizing unit which applies a pressure to a first metallic member; and a fixing unit which has a second metallic member placed to come in contact with the fixing unit, to bond the first metallic member with the second metallic member, which can be mechanically fastened with each other. According to the present invention, the electrically assisted pressure joining method comprises: a step of mechanically fastening the first metallic member with the second metallic member; a step of connecting the electrode unit to the first metallic member, which is mechanically fastened with the second metallic member, and the second metallic member; and a step of receiving a current from the electrode unit to apply a pressure to the first metallic member through the pressurizing unit and to bonding the first metallic member and the second metallic member by electrically assisted pressure joining. According to the present invention, the electrically assisted pressure joining method is able to, after mechanically fastening the first metallic member with the second metallic member, bond through an electrically assisted pressure joining, to expand the bonded part, to improve bonding force, and to firmly perform a permanent bonding even if the first metallic member and the second metallic members are made from different materials. In addition, by connecting the electrode unit to a tool, which mechanically fastens the first metallic member with the second metallic member, a mechanical fastening and a bonding by electrically assisted pressure joining can be conducted at the same time by using a single part, which is efficient.

Description

Electrically assisted pressure joining method [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electrification welding method, and more particularly, And a pressure welding method.

Electrically assisted pressure joining generally refers to a method in which two metal materials are bonded together while heating the material to a temperature below the melting point by pressing and pressing the two metal materials. More specifically, in the energization and pressure welding, current is applied in a state in which two metal materials are in contact with each other, and pressure is applied to the extent that plastic deformation does not occur, and bonding is performed using diffusion of atoms generated between the bonding surfaces.

A conventional electromechanical pressure welding apparatus is disclosed in Korean Patent Publication No. 10-2014-0089640.

However, in the conventional electrification-welding apparatus, the first metal material and the second metal material are arranged so as to be brought into contact with each other so that the first metal material and the second metal material come into contact with each other to form a joint. Accordingly, when the first metal material and the second metal material are in contact with each other at a small contact area, the area of the joining portion is small and the bonding property may be deteriorated. The first metal material and the second metal material are different materials The bonding property may be deteriorated due to the difference in the components of the first metal material and the second metal material.

SUMMARY OF THE INVENTION The present invention has been made in order to overcome the above problems, and an object of the present invention is to provide a current-voltage welding method in which bonding properties between a first metal material and a second metal material are improved.

According to an aspect of the present invention, there is provided an electrification welding method including: an electrode portion; a pressing portion for applying pressure to the first metal member; and a fixing portion disposed so as to abut the second metal member A method of joining a first metal member and a second metal member mutually mechanically fastenable to each other by using a current and pressure welding apparatus, the method comprising: a mechanical fastening step of mechanically fastening the first metal member to the second metal member; Connecting the electrode portion to the first metal member and the second metal member mechanically fastened to the second metal member; And applying a current to the first metallic member through the pressing portion and applying a current to the first metallic member and the second metallic member by applying a current from the electrode portion.

Wherein the mechanical fastening step comprises mechanically fastening the first metal member to the second metal member by forming a threaded hole corresponding to the bolt in the second metal member, desirable.

In the mechanical fastening step, the first metal member may be formed of a rivet, and the second metal member may be formed with a rivet hole corresponding to the rivet to mechanically fasten the first metal member to the second metal member have.

It is also preferable that the electrode connection step is connected to a tool whose one end is connected to the second metal member and the other end is connected to the tool for fastening the first metal member in the mechanical fastening step.

Also, the second metal member may be composed of at least one or more.

According to the electrification piezoelectric method of the present invention, the first metal member and the second metal member are mechanically fastened and joined together by pressure contact welding to enlarge the joining portion to improve the joining force, and the first metal member and the second metal member Even if composed of heterogeneous materials, it is possible to make permanent permanent bonding.

Further, by connecting the electrode portion to the tool for mechanically fastening the first metal member to the second metal member, the mechanical fastening and the energizing pressure contact bonding can be performed simultaneously as one component, and the bonding process is shortened and efficient.

In addition, the first metal member can be fastened to the plurality of second metal members so that the second metal members can be joined together in a state in which the positions of the plurality of second metal members are stably fixed, , The bonding time for bonding the plurality of second metal members can be shortened, and the bonding efficiency can be improved.

1 is a flowchart sequentially showing energized pressure welding methods according to an embodiment of the present invention,
Fig. 2 is a state diagram sequentially showing the state of the electrification-welding apparatus according to the electrification-voltage welding method shown in Fig.
3 is a state diagram showing a state in which an electrode portion is connected to a tool in the energization and pressure welding method shown in Fig.
Fig. 4 is a state diagram sequentially showing a state in which a plurality of second metal members are joined in the energization and pressure welding method shown in Fig. 1. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, at the time of the present application, It should be understood that variations can be made.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 4, a current-voltage welding method S10 according to an embodiment of the present invention is for diffusion bonding the first metal member B and the second metal member P to each other, 100, a pressing portion 200, and a fixing portion 300 are used.

The electrode unit 100 supplies current to the first metal member B and the second metal member P. [ That is, the electrode unit 100 is connected to the first metal member B and the second metal member P.

The pressing portion 200 is for pressing the first metal member B and is connected to the first metal member B to press the first metal member B and the second metal member P And presses the first metal member (B) when the diffusion bonding is performed. That is, the pressing portion 200 is disposed on one side of the first metal member B so as to contact the first metal member B, and applies pressure to the first metal member B. The pressing unit 200 may be connected to the electrode unit 100 and the pressing unit 200 may be connected to the electrode unit 100 to apply a current from the electrode unit 100. [ The first metallic member B and the second metallic member P are bonded to each other by applying a pressure to the first metallic member B after the current is transmitted to the first metallic member B, .

The fixing portion 300 is for fixing the second metal member P and is connected to the electrode portion 100 and is arranged so that the second metal member P abuts. That is, the fixing portion 220 fixes the second metal member P and supports the second metal member P when the pressing portion 200 applies pressure to the first metal member B, And the first metal member B and the second metal member P can be joined to each other by receiving a current from the electrode unit 100 and transmitting a current to the second metal member P. [ have.

The energized pressure welding method (S10) of the present invention is a method of joining the first metal member (B) and the second metal member (P) by using the energization connection apparatus (10) , An electrode connecting step (S200), and an energizing and pressure-contacting bonding step (S300).

The mechanical fastening step (S100) is a step of mechanically fastening the first metal member (B) to the second metal member (P). That is, the second metal member P and the first metal member B are configured to be mechanically fastened to each other. For example, the first metal member B is formed of a bolt, the second metal member P is formed with a screw hole h corresponding to the bolt, and the second metal member P P and the first metal member B are bolt-fastened. That is, the mechanical fastening step S100 is a step of inserting the first metal member B composed of bolts into the screw hole of the second metal member P, B) may be bolted to the second metal member (P). As another example, the first metal member B may be formed of a rivet, and the second metal member P may be formed with a rivet hole corresponding to the rivet so that the second metal member P, (B) may be configured to be capable of rivet fastening. That is, in the mechanical fastening step S100, the first metal member B composed of rivets is inserted into the rivet hole of the second metal member P, and then the first metal member B Can be riveted to the second metal member P. That is, the first metal member B and the second metal member P are mechanically fastenable to each other and are not limited to bolt fastening and rivet fastening, but may be mechanically fastened such as fastening bolts and nuts. It can be changed and applied to other configurations.

The electrode connection step S200 is a step of connecting the electrode unit 100 to the first metal member B and the second metal member P. [ That is, the electrode connection step S200 is performed by connecting the electrode unit 100 to the first metal member B and the second metal member P mechanically fastened to each other in the mechanical fastening step S100 , The first metal member (B), and the second metal member (P). The electrode connection step S200 may connect the first electrode of the electrode unit 100 to the fixing unit 300 to apply a current to the second metal member P, (B), as shown in Fig. However, in the electrode connection step S200, the electrode of the electrode unit 100 is connected to the fixing unit 300, and the electrode of the electrode unit 100 is directly connected to the first metal member B The first electrode of the electrode unit 100 may be directly connected to the second metal member P or the first electrode of the electrode unit 100 may be connected to the pressing unit 200 A current may be applied to the first metal member B. [

3, the electrode connecting step S200 is a step of connecting a first electrode to the fixing part 300 to apply an electric current to the second metal member P, The first metal member B may be connected to the tool D for fastening the member B so that current is applied to the first metal member B. [ That is, after connecting the electrode unit 100 to the tool D, the first metal member B is mechanically fastened to the second metal member P via the tool D, D may be connected to the electrode unit 100 to apply a current to the first metal member B. [ Therefore, by connecting the electrode unit 100 to the tool D, it is possible to simultaneously perform mechanical bonding and electrification-voltage contact bonding as a single component, thereby shortening the joining process.

The electrification-connection step S300 is a step for joining the first metal member B and the second metal member P together. In the energized voltage-splicing step S300, a current is applied from the electrode unit 100 and a pressure is applied to the first metal member B through the pressing unit 200, so that the first metal member B ) And the second metal member (P) can be connected to each other by electric connection. That is, the energizing and pressure-contact joining step (S300) may cause intensive plastic deformation at the bonding region (1) between the first metal member (B) and the second metal member (P) The second metal member P can be bonded and the first metal member B is mechanically fastened to the second metal member P in the state of being energized and pressure-welded, So that a strong permanent bonding is possible. The pressing and pressing step S300 may be performed by pressing the first metal member B by the pressing portion 200 while the second metal member P is fixed by the fixing portion 300 The first metal member B and the second metal member P are caused to be locally heated at a bonding region 1 of the first metal member B and the second metal member P. [ Can be joined to each other.

Meanwhile, as shown in FIG. 4, the second metal members P may be configured to be composed of a plurality of members. Referring to FIG. 4, when a plurality of the second metal members P are formed, the electrification-welding method S10 will be sequentially examined.

4 (a), it is preferable that each of the plurality of second metal members P has a respective screw hole h formed thereon, and the plurality of second metal members P have screw holes h are arranged to communicate with each other.

Next, as shown in Fig. 4 (b), the first metal member B is mechanically fastened to the screw hole h communicated with the plurality of second metal members P. [

Next, referring to FIG. 4C, in a state where the first metal member B is mechanically coupled to the plurality of second metal members P, the plurality of second metal members P, The electrode unit 100 is connected to the first metal member B. That is, a current is applied to the plurality of second metal members P by simultaneously connecting the electrode unit 100 to the fixing unit 300, and the electrode unit 100 The current can be applied to the first metal member B. [

Finally, as shown in FIG. 4 (d), a current is applied to the plurality of second metal members P and the first metal member B through the electrode unit 100, The plurality of second metal members P and the first metal member B can be subjected to electrification and pressure welding by applying pressure to the first metal member B through the first and second metal members B. [ The plurality of second metal members P and the first metal members B are mechanically fastened to each other so that the positions of the plurality of second metal members P are stably fixed, The joining region 1 can be enlarged to be firmly fixed, the joining time for joining the plurality of second metal members P can be shortened, and the joining efficiency can be improved . In FIG. 4, the plurality of second metal members P are shown as being two, but the present invention is not limited thereto, and two or three second metal members P may be appropriately changed as needed.

According to the electrification piezoelectricity method (S10) of the present invention, the first metal member (B) and the second metal member (P) are mechanically fastened and then joined together by contact pressure welding to enlarge the joint portion (1) And even if the first metal member B and the second metal member P are made of different materials, solid permanent bonding is possible.

The electrode part 100 is connected to the tool D for mechanically fastening the first metal member B to the second metal member P so that mechanical fastening and electrification voltage contact bonding can be performed simultaneously as a single part, Is shortened and efficient.

In addition, the first metal member B can be joined to the plurality of second metal members P by energizing and pressure-welding, so that the positions of the plurality of second metal members P can be stably fixed, The bonding time for bonding the plurality of second metal members P can be shortened, and the bonding efficiency can be improved.

 While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10: energizing / compressing device 100: electrode part
200: pressing part 300:
B: first metal member P: second metal member
D: tool h: hole
1:

Claims (5)

  1. A first metal member capable of mechanical fastening by using an electrification-welding apparatus including an electrode portion, a pressing portion for applying pressure to the first metal member, and a fixing portion disposed so as to abut on the second metal member; In the energized pressure welding method for bonding two metal members to each other,
    A mechanical fastening step of mechanically fastening the first metal member to the second metal member;
    Connecting the electrode portion to the first metal member and the second metal member mechanically fastened to the second metal member;
    And an energization and pressure welding step of applying an electric current to the first metal member and the second metal member by applying pressure to the first metal member through the pressing unit under a current from the electrode unit .
  2. The method according to claim 1,
    Wherein the mechanical fastening step comprises:
    Wherein the first metal member is composed of a bolt,
    And the second metal member is formed with a screw hole corresponding to the bolt to mechanically fasten the first metal member to the second metal member.
  3. The method according to claim 1,
    Wherein the mechanical fastening step comprises:
    Wherein the first metal member comprises a rivet,
    Wherein the second metal member has a rivet hole corresponding to the rivet to mechanically fasten the first metal member to the second metal member.
  4. The method according to claim 1,
    The electrode connection step may include:
    A first electrode connected to the second metal member,
    And the other end is connected to a tool for fastening the first metal member in the mechanical fastening step.
  5. The method according to any one of claims 1 to 4,
    Wherein the second metal member comprises:
    And at least one of them is formed.
KR1020170146811A 2017-11-06 2017-11-06 Electrically assisted pressure joining method KR20190051315A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020170146811A KR20190051315A (en) 2017-11-06 2017-11-06 Electrically assisted pressure joining method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020170146811A KR20190051315A (en) 2017-11-06 2017-11-06 Electrically assisted pressure joining method
PCT/KR2018/013371 WO2019088796A1 (en) 2017-11-06 2018-11-06 Electric pressure welding method

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KR20190051315A true KR20190051315A (en) 2019-05-15

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2954476B2 (en) * 1994-01-28 1999-09-27 新日本製鐵株式会社 Method of joining the iron-based metallic material and an aluminum-based metallic material
JP3702837B2 (en) * 2001-11-14 2005-10-05 有限会社ナカザワ製作所 Dissimilar metal joining method
DE102004003909B4 (en) * 2004-01-27 2010-09-09 GM Global Technology Operations, Inc., Detroit Press welding process for joining two or more sheets or profile parts, in particular a body segment, its use and body segment
FR2891324B1 (en) * 2005-09-26 2011-02-18 Valeo Systemes Thermiques Assembly device between two stratified plates comprising a resin layer interposed between two metal sheets
KR101558208B1 (en) * 2013-12-30 2015-10-08 주식회사 성우하이텍 Spot welding method of panel

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