KR20180020735A - Manufacture method for a composite matrerial by Friction stir welding - Google Patents

Manufacture method for a composite matrerial by Friction stir welding Download PDF

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KR20180020735A
KR20180020735A KR1020160105546A KR20160105546A KR20180020735A KR 20180020735 A KR20180020735 A KR 20180020735A KR 1020160105546 A KR1020160105546 A KR 1020160105546A KR 20160105546 A KR20160105546 A KR 20160105546A KR 20180020735 A KR20180020735 A KR 20180020735A
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South Korea
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composite material
friction stir
stir welding
metal member
tool
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KR1020160105546A
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Korean (ko)
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홍성태
정용하
박기동
김주리
안은영
한흥남
최시훈
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울산대학교 산학협력단
서울대학교산학협력단
순천대학교 산학협력단
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Priority to KR1020160105546A priority Critical patent/KR20180020735A/en
Publication of KR20180020735A publication Critical patent/KR20180020735A/en

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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
    • 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
    • B23K20/002—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating specially adapted for particular articles or work
    • 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
    • B23K20/129—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 specially adapted for particular articles or workpieces
    • 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
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys
    • 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
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/14—Titanium or alloys thereof
    • B23K2203/04—
    • B23K2203/14—

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

The present invention relates to a manufacturing method of a composite material by friction stir welding, in which first and second metal members are bonded to each other by friction stir welding. The manufacturing method of a composite material by friction stir welding comprises: a metal member placement step of bringing the first metal member and the second metal member into contact with each other; a tool transfer step of moving a consumable tool to a portion where the first and second metal members are in contact with each other; and a composite material manufacturing step of rotating the consumable tool and moving the same along boundary points of the first and second metal members to manufacture a composite material on a bonded portion by friction stir welding. According to the present invention, due to a rotational movement of a consumable tool, abrasive particles of the tool can be drawn into the bonded portion of the first metal member and the second metal member to form a composite material. Therefore, it is possible to induce local generation of a composite material at the bonded portion, to enhance a microstructure, and to improve mechanical properties.

Description

마찰교반 용접을 통한 복합재료 생성방법{Manufacture method for a composite matrerial by Friction stir welding}FIELD OF THE INVENTION [0001] The present invention relates to a method for producing a composite material by friction stir welding,

본 발명은 마찰교반 용접을 통한 복합재료 생성방법에 관한 것으로, 더욱 상세하게는 마찰교반용접에 의하여 접합부에 복합재료를 생성하는 마찰교반 용접을 통한 복합재료 생성방법에 관한 것이다.The present invention relates to a method of producing a composite material by friction stir welding, and more particularly, to a method of producing a composite material by friction stir welding which produces a composite material at a joint by friction stir welding.

일반적으로, 마찰교반용접은 마찰열을 이용하여 용접하는 방법으로, 두 개의 판을 겹친 후 강력한 힘을 가하여 발생하는 마찰열로 판을 접합시킨다. 즉 마찰교반용접은, 두 개의 판을 겹친 후 나사선 형태의 돌기를 가지는 비소모성 공구를 두 개의 판의 사이에 고속으로 회전시키면서 삽입시킨다. 공구와 피접합체와의 상호 마찰에 의하여 마찰열이 발생하고, 발생한 마찰열에 의하여 공구 주변의 재료가 연화되어, 재료의 소성유동으로 접합면의 판이 강제적으로 혼합되며 용접이 이루어진다.Generally, friction stir welding is a method of welding by using frictional heat, in which two plates are superimposed, and then the plate is joined by frictional heat generated by applying a strong force. In other words, friction stir welding is performed by superposing two plates and inserting a non-consumable tool having a thread-like projection at high speed between two plates. Frictional heat is generated by the mutual friction between the tool and the bonded body, and the material around the tool is softened by the generated frictional heat, and the plate of the bonded surface is forcibly mixed by the plastic flow of the material.

종래의 마찰교반 용접을 통한 복합재료 생성방법으로는, 대한민국 공개특허 제 10-2013-0100481호가 개시되어 있다.As a method for producing a composite material through conventional friction stir welding, Korean Patent Laid-Open No. 10-2013-0100481 is disclosed.

하지만 종래의 마찰교반용접방법은, 이종소재로 구성된 두 개의 판을 접합시킴으로써 복합재료를 생성하는 방법으로, 두개의 판을 구성하고 있는 소재 외에 추가적인 소재를 인입하여 복합재료를 생성시키는 것에 어려움이 있어, 기계적 물성치를 향상시키는데 한계가 있다. 따라서 기계적 물성치를 향상시키기 위하여 추가소재의 유입이 가능한 마찰교반 용접을 통한 복합재료 생성방법이 요구된다.However, the conventional friction stir welding method is a method of producing a composite material by joining two plates made of different materials, and it is difficult to generate a composite material by introducing an additional material in addition to the material constituting the two plates , There is a limit in improving the mechanical properties. Therefore, there is a need for a method for producing a composite material through friction stir welding capable of introducing additional materials in order to improve mechanical properties.

본 발명은 상기한 바와 같은 문제점을 해소하기 위하여 창출된 것으로, 추가소재를 유입시켜 기계적 물성치를 향상시킬 수 있는 마찰교반 용접을 통한 복합재료 생성방법을 제공하는데 목적이 있다.It is an object of the present invention to provide a method of producing a composite material by friction stir welding capable of improving the mechanical properties by introducing additional material.

상기한 바와 같은 목적을 달성하기 위한 본 발명에 따른 마찰교반 용접을 통한 복합재료 생성방법은, 제 1, 제 2 금속부재를 마찰교반용접에 의하여 서로 접합시키는 마찰교반 용접을 통한 복합재료 생성방법에 있어서, 상기 제1 금속부재 및 제 2 금속부재를 서로 맞닿게 하는 금속부재 배치단계; 상기 제 1, 제 2 금속부재의 맞닿는 부분에 소모성공구를 이동시키는 공구이송단계; 및 상기 소모성 공구를 회전시키며 상기 제 1, 제 2 금속부재의 경계점을 따라 이동시켜 마찰교반용접하며 접합부에 복합재료를 생성하는 복합재료 생성단계를 포함한다.According to another aspect of the present invention, there is provided a method of producing a composite material by friction stir welding, wherein the first and second metal members are joined to each other by friction stir welding A metal member placement step of bringing the first metal member and the second metal member into contact with each other; A tool transferring step of transferring a consumable tool to a contact portion of the first and second metal members; And a composite material producing step of rotating the consumable tool and moving along the boundary points of the first and second metal members to perform friction stir welding to produce a composite material at the joint.

여기서 상기 제 1, 제 2 금속부재는, 용융점이 700도 이상인 고용융점 소재인 것이 바람직하다.It is preferable that the first and second metal members have a melting point of 700 ° C. or higher.

또한 상기 제 1, 제 2 금속부재는, 철강 또는 티타늄 소재이고, 상기 소모성공구는, 세라믹(Si3N4) 또는 텅스텐 카바이드 소재로 구성되는 것이 바람직하다.Preferably, the first and second metal members are made of steel or titanium, and the consumable tool is made of ceramic (Si3N4) or tungsten carbide.

또한, 상기 소모성공구는, 나사선 형태의 돌기가 형성된 형상인 것이 바람직하다.Further, it is preferable that the consumable tool has a shape in which a thread-like projection is formed.

본 발명에 따른 마찰교반 용접을 통한 복합재료 생성방법에 의하면, 소모성공구의 회전이동으로 인하여 공구의 마모입자가 제 1금속부재와 제 2금속부재의 접합부에 인입됨으로써 복합재료가 형성될 수 있다. 따라서, 접합부에 복합재료의 국부적인 발생을 유도하고, 미세구조를 향상시키며, 기계적 물성치가 개선될 수 있다. According to the method of producing a composite material by friction stir welding according to the present invention, the wear particles of the tool are attracted to the joint portion of the first metal member and the second metal member due to the rotational movement of the consumable tool, whereby the composite material can be formed. Thus, local generation of the composite material at the joints can be induced, the microstructure can be improved, and the mechanical properties can be improved.

도 1은 본 발명의 실시예에 따른 마찰교반 용접을 통한 복합재료 생성방법의 순서를 단계적으로 도시한 순서도,
도 2는 도 1에 도시한 마찰교반 용접을 통한 복합재료 생성방법의 공구이송단계를 개략적으로 도시한 사시도,
도 3은 도 1에 도시한 복합재료 생성방법의 공구이송단계 및 복합재료생성단계로부터 복합재료가 생성된 모습을 도시한 단면도이다.BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flowchart showing a stepwise sequence of a method of producing a composite material through friction stir welding according to an embodiment of the present invention;
FIG. 2 is a perspective view schematically showing a tool transferring step of a composite material producing method through friction stir welding shown in FIG. 1;
FIG. 3 is a cross-sectional view showing a state in which the composite material is produced from the tool transferring step and the composite material generating step in the composite material producing method shown in FIG. 1;

이하, 첨부된 도면을 참조하여 본 발명에 따른 바람직한 실시예를 상세히 설명하기로 한다. 이에 앞서, 본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 아니 되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여, 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다.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.

따라서 본 명세서에 기재된 실시 예와 도면에 도시된 구성은 본 발명의 가장 바람직한 실시예에 불과할 뿐이고, 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들은 대체할 수 있는 균등한 변형 예들이 있을 수 있음을 이해하여야 한다.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.

이하, 본 발명의 실시예를 첨부된 도면을 참조하여 상세히 설명하면 다음과 같다. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1 내지 도 3을 참조하면, 본 발명에 실시예에 따른 마찰교반 용접을 통한 복합재료 생성방법(S10)은, 제 1금속부재(10) 및 제 2 금속부재(20)를 마찰교반용접에 의하여 서로 접합시키는 방법에 관한 것이다. 상기 마찰교반 용접을 통한 복합재료 생성방법(S10)은, 금속부재 배치단계(S100), 공구이송단계(S200), 및 복합재료 생성단계(S300)를 포함한다.Referring to FIGS. 1 to 3, a method (S10) for producing a composite material by friction stir welding according to an embodiment of the present invention includes a first metal member 10 and a second metal member 20, To each other. The composite material producing method S10 through the friction stir welding includes a metal member placing step S100, a tool feeding step S200, and a composite material generating step S300.

상기 금속부재 배치단계(S100)는, 서로 접합시킬 상기 제1 금속부재(10) 및 상기 제 2 금속부재(20)가 서로 맞닿도록 배치시킨다. 상기 제 1 금속부재(10) 및 상기 제 2 금속부재(20)는, 용융점이 700도 이상인 고용융점 소재인 것이 바람직하다. 또한 상기 제 1 금속부재(10) 및 상기 제 2 금속부재(20)는, 철강 또는 티타늄(Titanium) 소재인 것이 바람직하다. 상기 제 1 금속부재(10) 및 상기 제 2 금속부재(20)는 서로 같은 금속소재인 것이 바람직하나, 이에 한정하는 것은 아니며 이종소재로 구성될 수 도 있다. The metal member placement step S100 is arranged such that the first metal member 10 and the second metal member 20 to be joined to each other are in contact with each other. It is preferable that the first metal member 10 and the second metal member 20 have a melting point of 700 ° C. or higher. The first metal member 10 and the second metal member 20 are preferably made of steel or titanium. The first metal member 10 and the second metal member 20 are preferably made of the same metal material but are not limited thereto and may be made of different materials.

상기 공구이송단계(S200)는, 상기 제 1 금속부재(10) 및 상기 제 2 금속부재(20)의 맞닿는 부분에 소모성공구(T)를 이동시킨다. 상기 소모성공구(T)는 세라믹(Si3N4) 또는 텅스텐 카바이드(tungsten- carbide) 소재로 구성되는 것이 바람직하다. 또한 상기 소모성공구(T)는, 나사선 형태의 돌기가 형성된 형상으로 형성되는 것이 바람직하나, 이에 한정하는 것은 아니며 다른 형상으로 적용 가능할 것이다. 즉 상기 공구이송단계(S200)는, 상기 소모성공구(T)의 나사선 형태의 돌기가 상기 제 1 금속부재(10) 및 상기 제 2 금속부재(20)의 맞닿는 부분의 일측에 맞닿도록 이송시킨다. The tool transferring step S200 moves the consumable tool T to the abutting portion of the first metal member 10 and the second metal member 20. The consumable tool T is preferably made of ceramic (Si 3 N 4) or tungsten carbide material. Further, the consumable tool T is preferably formed in a shape having a thread-like projection, but the present invention is not limited thereto and may be applied to other shapes. That is, the tool transferring step S200 transfers the thread-like projections of the consumable tool T to abut one side of the contact portion of the first metal member 10 and the second metal member 20.

상기 복합재료 생성단계(S300)는, 상기 소모성공구(T)를 회전시키며 상기 제 1 금속부재(10) 및 상기 제 2 금속부재(20)가 서로 맞닿는 경계점을 따라 이동시켜, 1 금속부재(10) 및 상기 제 2 금속부재(20)를 마찰교반 용접한다. 즉, 도 3에 도시한 바와 같이 상기 소모성공구(T)는, 상기 제 1 금속부재(10) 및 상기 제 2 금속부재(20)의 맞닿는 부분의 일측에서 타측으로 회전하며 이동한다. 상기 소모성공구(T)와 상기 제 1 금속부재(10) 및 상기 제 2 금속부재(20)간의 상호마찰로 마찰열이 발생하고, 발생한 마찰열에 의하여 상기 제 1 금속부재(10) 및 상기 제 2 금속부재(20)가 맞닿는 부분이 용융함으로써, 접합부(J)가 생성되어 서로 마찰교반용접된다. The composite material forming step S300 includes rotating the consumable tool T and moving the first metal member 10 and the second metal member 20 along a boundary point where the first metal member 10 and the second metal member 20 abut each other, And the second metal member 20 are friction stir welded. That is, as shown in FIG. 3, the consumable tool T rotates and moves from one side of the contact portion of the first metal member 10 and the second metal member 20 to the other side. Frictional heat is generated due to mutual friction between the consumable tool T and the first metal member 10 and the second metal member 20 and the frictional heat generated by the friction between the first metal member 10 and the second metal member 20, The portion where the member 20 abuts is melted, so that the joint portion J is generated and welded to each other by friction stir welding.

한편 상기 소모성공구(T)는, 마찰교반용접을 위하여 회전이동 시, 표면이 마모된다. 따라서, 상기 소모성공구(T)의 마모입자가 상기 제 1 금속부재(10) 및 상기 제 2 금속부재(20)의 접합부(J)에 인입되어 상기 제 1 금속부재(10) 및 상기 제 2 금속부재(20)와 서로 교반됨으로써, 복합재료(C)가 생성될 수 있다. 즉, 상기 접합부(J)에 상기 소모성공구(T)의 마모입자가 강화제로 포함됨으로써, 금속-세라믹, 금속-텅스텐 카바이드 등의 복합재료(C)의 국부적인 발생을 유도하고, 미세구조를 향상시키며, 기계적 물성치가 개선될 수 있다. On the other hand, the consumable tool T wears its surface when it rotates for friction stir welding. Therefore, abrasive particles of the consumable tool T are drawn into the joint J of the first metal member 10 and the second metal member 20 so that the first metal member 10 and the second metal member 20, By stirring with the member 20, a composite material C can be produced. That is, since the abrasive grains of the consumable tool T are included in the joint J as a reinforcing agent, local generation of the composite material C such as metal-ceramic or metal-tungsten carbide is induced and the fine structure is improved And the mechanical properties can be improved.

본 발명에 따른 마찰교반 용접을 통한 복합재료 생성방법(S10)에 의하면, 소모성공구(T)의 회전이동으로 인하여 공구의 마모입자가 제 1금속부재(10)와 제 2금속부재(20)의 접합부(J)에 인입됨으로써 복합재료(C)가 형성될 수 있다. 따라서, 접합부(J)에 복합재료의 국부적인 발생을 유도하고, 미세구조를 향사시키며, 기계적 물성치가 개선될 수 있다. According to the method (S10) of producing a composite material by friction stir welding according to the present invention, wear particles of the tool are transferred to the first metal member 10 and the second metal member 20 due to the rotational movement of the consumable tool T The composite material C can be formed by being drawn into the joint J. Therefore, local occurrence of the composite material at the joint J can be induced, the microstructure can be accentuated, and the mechanical properties can be improved.

본 발명은 도면에 도시된 실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 본 기술 분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 다른 실시예가 가능하다는 점을 이해할 것이다. 따라서 본 발명의 진정한 기술적 보호 범위는 첨부된 특허청구범위의 기술적 사상에 의하여 정해져야 할 것이다.  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 : 제 1금속부재 20 : 제 2금속부재
C : 복합재료 T : 소모성 공구
J : 접합부10: first metal member 20: second metal member
C: Composite material T: Consumable tool
J: Joint

Claims (5)

제 1, 제 2 금속부재를 마찰교반용접에 의하여 서로 접합시키는 마찰교반 용접을 통한 복합재료 생성방법에 있어서,
상기 제1 금속부재 및 제 2 금속부재를 서로 맞닿게 하는 금속부재 배치단계;
상기 제 1, 제 2 금속부재의 맞닿는 부분에 소모성공구를 이동시키는 공구이송단계; 및
상기 소모성 공구를 회전시키며 상기 제 1, 제 2 금속부재의 경계점을 따라 이동시켜 마찰교반용접하며 접합부에 복합재료를 생성하는 복합재료 생성단계를 포함하는 마찰교반 용접을 통한 복합재료 생성방법. A method of producing a composite material by friction stir welding in which first and second metal members are joined to each other by friction stir welding,
A metal member placement step of bringing the first metal member and the second metal member into contact with each other;
A tool transferring step of transferring a consumable tool to a contact portion of the first and second metal members; And
And rotating the consumable tool to move along the boundary points of the first and second metal members to perform friction stir welding to produce a composite material at the joint. 청구항 1에 있어서,
상기 제 1, 제 2 금속부재는,
용융점이 700도 이상인 고용융점 소재인 마찰교반 용접을 통한 복합재료 생성방법. The method according to claim 1,
Wherein the first and second metal members
A method for producing a composite material by friction stir welding which is a high melting point material having a melting point of 700 degrees or more. 청구항 2에 있어서,
상기 제 1, 제 2 금속부재는,
철강 또는 티타늄 소재인 마찰교반 용접을 통한 복합재료 생성방법. The method of claim 2,
Wherein the first and second metal members
A method for producing a composite material by friction stir welding which is made of steel or titanium. 청구항 1에 있어서,
상기 소모성공구는,
세라믹(Si3N4) 또는 텅스텐 카바이드 소재로 구성되는 마찰교반 용접을 통한 복합재료 생성방법. The method according to claim 1,
The consumable tool,
A method of producing a composite material by friction stir welding comprising ceramic (Si3N4) or tungsten carbide material. 청구항 1에 있어서,
상기 소모성공구는,
나사선 형태의 돌기가 형성된 형상인 마찰교반 용접을 통한 복합재료 생성방법.
The method according to claim 1,
The consumable tool,
A method of producing a composite material by friction stir welding having a threaded projection.
KR1020160105546A 2016-08-19 2016-08-19 Manufacture method for a composite matrerial by Friction stir welding KR20180020735A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112192015A (en) * 2020-09-22 2021-01-08 王书杰 Method for preparing aluminum alloy composite material
KR20230099989A (en) 2021-12-28 2023-07-05 재단법인 포항금속소재산업진흥원 method for bonding alloy containing carbon as active ingredient

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112192015A (en) * 2020-09-22 2021-01-08 王书杰 Method for preparing aluminum alloy composite material
KR20230099989A (en) 2021-12-28 2023-07-05 재단법인 포항금속소재산업진흥원 method for bonding alloy containing carbon as active ingredient

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