KR102071223B1 - Welding method and apparatus for dissimilar metals - Google Patents

Welding method and apparatus for dissimilar metals Download PDF

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KR102071223B1
KR102071223B1 KR1020180074573A KR20180074573A KR102071223B1 KR 102071223 B1 KR102071223 B1 KR 102071223B1 KR 1020180074573 A KR1020180074573 A KR 1020180074573A KR 20180074573 A KR20180074573 A KR 20180074573A KR 102071223 B1 KR102071223 B1 KR 102071223B1
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welding
welding line
metal
ultrasonic
high frequency
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Korean (ko)
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KR20200001727A (en
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권영철
왕쩐후안
이호승
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선문대학교 산학협력단
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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
    • B23K28/00Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
    • B23K28/02Combined welding or cutting procedures or apparatus
    • 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
    • B23K20/00Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/10Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
    • 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
    • B23K20/00Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12Non-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
    • B23K20/122Non-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
    • B23K20/128Non-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 making use of additional material
    • 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
    • B23K20/00Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/22Non-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
    • B23K20/227Non-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 with ferrous layer
    • B23K20/2275Non-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 with ferrous layer the other layer being aluminium
    • 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
    • B23K20/00Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/24Preliminary treatment
    • 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
    • B23K35/00Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0255Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
    • 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
    • B23K2101/00Articles made by soldering, welding or cutting
    • B23K2101/006Vehicles
    • 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
    • B23K2103/00Materials to be soldered, welded or cut
    • B23K2103/18Dissimilar materials
    • B23K2103/20Ferrous alloys and aluminium or alloys thereof

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

Abstract

본 발명은 이종 금속재료의 용접방법 및 용접장치에 관한 것으로서, 보다 상세하게는 상호 융점이 상이한 이종 금속재료에 대하여 빠르고 신뢰성있게 용접할 수 있는 용접방법 및 용접장치를 제공하는 것이다.
본 발명에 따른 이종 금속재료의 용접방법은, 물성이 서로 다른 금속부재가 맞닿도록 배치하여 접합 대상 부위에 해당하는 용접라인을 형성하는 과정과, 상기 금속부재가 맞닿은 용접라인 상에 금속분말을 도포하는 과정과, 상기 금속부재가 맞닿은 용접라인 상에 고주파 가열을 통해 용접 전 예열이 이루어질 수 있도록 한 과정과, 상기 금속부재가 맞닿은 용접라인 상부면은 마찰 교반용접에 의한 용접이 이루어지고, 이종 금속부재의 용접라인 하부면은 초음파 용접에 의한 접합이 이루어질 수 있도록 한 과정을 포함하여 이루어진 것을 특징으로 한다.
또한, 본 발명에 따른 이종 금속재료의 용접장치는, 이종 금속부재가 상호 맞닿아 용접라인을 형성하고, 상기 용접라인 상부에 형성되는 마찰 교반 용접부와, 상기 용접라인 하부에 형성되는 초음파 용접부와, 상기 용접라인에서 용접이 진행되는 일 방향 어느 한 위치에 형성되는 금속분말 공급부와, 상기 금속분말 공급부 일측에 형성된 고주파 가열부와, 상기 금속부재가 배치된 양측 부위에서 용접라인 방향으로 금속부재를 가압할 수 있도록 형성된 가압부가 포함하여 구성된 것을 특징으로 한다.
The present invention relates to a welding method and a welding device for dissimilar metal materials, and more particularly, to a welding method and a welding device capable of fast and reliable welding of dissimilar metal materials having different melting points.
In the welding method of dissimilar metal materials according to the present invention, a process of forming a welding line corresponding to a portion to be joined by arranging metal members having different physical properties to contact each other, and applying a metal powder on the welding line which is in contact with the metal members And a process for preheating before welding by high frequency heating on the welding line in which the metal member is in contact with the upper surface of the welding line in which the metal member is in contact with each other. The welding line lower surface of the member is characterized in that it comprises a process to be made by the ultrasonic welding.
In addition, the welding device of dissimilar metal material according to the present invention, the dissimilar metal member is in contact with each other to form a welding line, the friction stir welding portion formed on the welding line, the ultrasonic welding portion formed under the welding line, Pressing the metal member in the welding line direction at both sides of the metal powder supply unit formed in one direction in which the welding proceeds in the welding line, the high frequency heating unit formed at one side of the metal powder supply unit, and the metal member is disposed. Characterized in that it comprises a pressing portion formed to be made.

Description

이종 금속재료의 용접방법 및 용접장치 {WELDING METHOD AND APPARATUS FOR DISSIMILAR METALS}Welding method and welding device for dissimilar metal materials {WELDING METHOD AND APPARATUS FOR DISSIMILAR METALS}

본 발명은 이종 금속재료에 대한 용접방법 및 용접장치에 관한 것으로서, 보다 상세하게는 융점이 상이한 이종 금속재료를 용이하게 용접할 수 있는 용접방법 및 용접장치에 관한 것이다.The present invention relates to a welding method and a welding apparatus for dissimilar metal materials, and more particularly, to a welding method and a welding apparatus capable of easily welding dissimilar metal materials having different melting points.

최근에는 유가가 급등하고 환경문제에 대한 관심이 높아지면서 과거보다 차량의 연비 증가에 대한 노력이 높아지고 있다. 차량의 연비는 차량의 중량에 따라 큰 영향을 받는 것이 일반적이다. 따라서, 차량의 연비를 증가시키기 위해서는 차량 몸체의 중량을 감소시켜야 하고, 차량의 몸체의 중량을 감소시키기 위해서는 차량을 구성하는 부품의 자중을 감소시켜야 한다. 즉, 차량을 구성하는 부품의 경량화가 요구되고 있다.Recently, as oil prices have soared and interest in environmental issues has increased, efforts have been made to increase fuel efficiency of vehicles. Fuel economy of a vehicle is generally greatly affected by the weight of the vehicle. Therefore, in order to increase the fuel economy of the vehicle, the weight of the vehicle body must be reduced, and in order to reduce the weight of the body of the vehicle, the weight of the parts constituting the vehicle must be reduced. That is, weight reduction of the components which comprise a vehicle is calculated | required.

특히, 차량의 경량화는 연비향상기술 중 가장 주목을 받고 있는 것으로, 부품삭감 및 구조개선, 소재의 경량화 등 다양한 부문에서 연구, 개발이 진행되고 있다. 그리고, 차량 소재의 경량화는 엔진효율을 높여 차량의 성능 향상을 극대화시키고, 이로 인하여 연비향상을 도모할 수 있으므로, 환경오염방지와 연료절감에 가장 적합하고 효과적인 방법이다.In particular, the weight reduction of the vehicle is attracting the most attention among the fuel efficiency improvement technology, research and development in progress in various sectors, such as parts reduction, structural improvement, lightweight material. In addition, weight reduction of the vehicle material increases the engine efficiency to maximize the performance of the vehicle, thereby improving fuel efficiency, which is the most suitable and effective method for environmental pollution prevention and fuel reduction.

차량 경량화를 위해서는 Al 합금과 같이 경량화가 가능한 강판을 사용하는 것이 바람직한데 이는 내식성, 저온 인성, 열전도도 등과 같은 우수한 특성을 갖는다. In order to reduce the weight of the vehicle, it is preferable to use a steel plate that can be reduced in weight, such as an Al alloy, which has excellent characteristics such as corrosion resistance, low temperature toughness, and thermal conductivity.

하지만, Al 합금은 강성이 부족하다는 단점이 있어 기본 골격은 Fe 강판을 활용하고 일부분에 Al 합금 강판을 사용하는 기술이 요구되고 있다. 이 과정에서 서로 물성이 다른 Fe 소재와 Al 합금 소재를 접합하는 기술인 이종용접 기술에 대한 연구가 증가하고 있다.However, Al alloy has a disadvantage of lack of rigidity, so the basic skeleton is required to use a Fe steel plate and a portion of the Al alloy steel sheet. In this process, research on heterogeneous welding technology, which joins Fe and Al alloy materials having different physical properties, is increasing.

이종용접 기술은 기존에도 다양한 방법이 제안된 바 있으며, 국내공개특허 제10-2011-0078518호(2011.07.07 공개)에서는 '이종재료의 마찰용접방법 및 용접장치'를 제안한 바 있다. 이와 같은 선행기술에 의하면 융점이 다른 이종 금속재료의 용접시 마찰열을 발생시키면서 가압하여 접합부위가 용융 접합되도록 한 기술적 특징을 갖는다.Heterogeneous welding technology has been proposed a variety of methods in the past, Korean Patent Publication No. 10-2011-0078518 (2011.07.07 published) has proposed 'friction welding method and welding device of different materials'. According to the prior art as described above, it has a technical characteristic that the joining part is melt-bonded by pressurizing while generating frictional heat when welding dissimilar metal materials having different melting points.

하지만, 마찰열을 발생시켜 모재를 접합하는 과정은 용접시간이 오래 소요되고, 모재의 내측부위까지 충분히 열이 전달되지 않은 상태에서 접합을 시도할 수 있어 접합상태의 신뢰성이 저하될 수 있는 문제점도 있었다.However, the process of joining the base material by generating frictional heat takes a long time, and there is a problem in that the joining state can be deteriorated due to insufficient heat transfer to the inner portion of the base material. .

대한민국공개특허 제10-2011-0078518호(2011.07.07 공개)Republic of Korea Patent Publication No. 10-2011-0078518 (published Jul. 7, 2011)

본 발명의 목적은 상술한 바와 같은 문제점을 해결하기 위해 안출된 것으로서, 상호 융점이 상이한 이종 금속재료에 대하여 빠르고 신뢰성있게 용접할 수 있는 용접방법 및 용접장치를 제공하는데 그 목적이 있다.Disclosure of Invention An object of the present invention is to provide a welding method and a welding apparatus that can be quickly and reliably welded on dissimilar metal materials having different melting points.

상기 목적을 달성하기 위해 본 발명은, 물성이 서로 다른 금속부재가 맞닿도록 배치하여 접합 대상 부위에 해당하는 용접라인을 형성하는 과정과, 상기 금속부재가 맞닿은 용접라인 상에 금속분말을 도포하는 과정과, 상기 금속부재가 맞닿은 용접라인 상에 고주파 가열을 통해 용접 전 예열이 이루어질 수 있도록 한 과정과, 상기 금속부재가 맞닿은 용접라인 상부면은 마찰 교반용접에 의한 용접이 이루어지고, 이종 금속부재의 용접라인 하부면은 초음파 용접에 의한 접합이 이루어질 수 있도록 한 과정을 통하여 본 발명의 기술적 과제를 해결하고자 한다.In order to achieve the above object, the present invention provides a process for forming a welding line corresponding to a joining part by arranging metal members having different physical properties to contact each other, and applying a metal powder onto the welding line in which the metal members are in contact with each other. And preheating the welding line through high frequency heating on the welding line in which the metal member is in contact with the upper surface of the welding line in which the metal member is in contact, and welding is performed by friction stir welding. The lower surface of the welding line is intended to solve the technical problem of the present invention through a process to be joined by the ultrasonic welding.

또한, 본 발명은 서로 다른 융점을 갖는 이종 금속부재를 용접하기 위한 장치 구성에 있어서, 이종 금속부재가 상호 맞닿아 용접라인을 형성하고, 상기 용접라인 상부에 형성되는 마찰 교반 용접부와, 상기 용접라인 하부에 형성되는 초음파 용접부와, 상기 용접라인에서 용접이 진행되는 일 방향 어느 한 위치에 형성되는 금속분말 공급부와, 상기 금속분말 공급부 일측에 형성된 고주파 가열부와, 상기 금속부재가 배치된 양측 부위에서 용접라인 방향으로 금속부재를 가압할 수 있도록 형성된 가압부가 포함된 구성을 통하여 본 발명의 기술적 과제를 해결하고자 한다.The present invention also provides a device for welding dissimilar metal members having different melting points, wherein the dissimilar metal members are in contact with each other to form a welding line, and the friction stir welding part formed on the welding line, and the welding line. Ultrasonic welding portion formed in the lower portion, the metal powder supply portion formed in any one direction in which the welding proceeds in the welding line, the high frequency heating portion formed on one side of the metal powder supply portion, and the both sides of the metal member It is intended to solve the technical problem of the present invention through a configuration including a pressing portion formed to press the metal member in the welding line direction.

상술한 바와 같이, 본 발명에 따른 이종 금속재료의 용접방법 및 용접장치에 의하면 마찰교반 용접과 초음파 용접을 접목시켜 에너지 증폭에 따른 시너지 효과를 발생시키므로 용접시간을 단축시킬 수 있으면서, 표면 뿐 아니라 내측 부위에도 에너지가 충분히 전달되어 신뢰성있는 접합상태를 형성할 수 있는 효과가 있다.As described above, according to the welding method and welding apparatus of dissimilar metal materials according to the present invention, the synergistic effect of energy amplification is generated by combining friction stir welding and ultrasonic welding, so that the welding time can be shortened, and not only the surface but also the inner side. Enough energy is also transferred to the site has the effect of forming a reliable bonding state.

도 1은 본 발명의 실시예에 따른 이종 금속재료의 용접방법을 나타낸 순서도이다.
도 2는 본 발명의 실시예에 따른 이종 금속재료의 용접장치를 나타낸 구성도이다.
1 is a flow chart showing a welding method for dissimilar metal materials according to an embodiment of the present invention.
2 is a block diagram showing an apparatus for welding dissimilar metal materials according to an embodiment of the present invention.

이하, 첨부한 도면을 참조하여, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 본 발명의 실시예를 설명한다. Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 용이하게 이해할 수 있는 바와 같이, 후술하는 실시예는 본 발명의 개념과 범위를 벗어나지 않는 한도 내에서 다양한 형태로 변형될 수 있다. 가능한 한 동일하거나 유사한 부분은 도면에서 동일한 도면부호를 사용하여 나타낸다.As those skilled in the art can easily understand, the embodiments described below may be modified in various forms without departing from the spirit and scope of the present invention. Where possible, the same or similar parts are represented using the same reference numerals in the drawings.

이하, 본 발명의 일 실시예에 따른 이종 금속재료의 용접방법 및 용접장치에 대하여 상세히 설명한다.Hereinafter, a welding method and a welding device for dissimilar metal materials according to an embodiment of the present invention will be described in detail.

도 1은 본 발명의 실시예에 따른 이종 금속재료의 용접방법을 나타낸 순서도이다.1 is a flow chart showing a welding method for dissimilar metal materials according to an embodiment of the present invention.

도 1에 도시된 바와 같이, 본 발명은 융점이 상이한 더로 다른 금속부재를 용접하는 방법에 관한 것으로, 용접라인 형성단계(S10), 금속분말 도포단계(S20), 고주파 가열단계(S30), 복합 용접단계(S40)를 포함하여 이루어진다.As shown in FIG. 1, the present invention relates to a method for welding another metal member with different melting points, welding line forming step (S10), metal powder applying step (S20), high frequency heating step (S30), composite It comprises a welding step (S40).

상기 용접라인 형성단계(S10)는, 용접대상인 서로 다른 금속부재(11,12)가 맞닿도록 배치하여 접합 대상 부위에 해당하는 용접라인(L)을 형성한다. 이때 금속부재(11,12)는 융점이 서로 다른 이종 금속재료가 적용될 수 있으며, 통상 강도유지와 경량화라는 목적을 달성하기 위해 Fe계 합금과 Al계 합금에 해당하는 금속부재(11,12)가 적용될 수 있다. In the welding line forming step (S10), different metal members 11 and 12, which are to be welded, are disposed to contact each other to form a welding line L corresponding to a joining part. In this case, the metal members 11 and 12 may be applied with different metal materials having different melting points. In order to achieve the purpose of maintaining strength and light weight, the metal members 11 and 12 corresponding to the Fe-based alloy and the Al-based alloy are generally Can be applied.

상기 금속분말 도포단계(S20)는 서로 다른 이종 금속재료를 빠르고 견고하게 용접할 수 있도록 두 개의 금속부재(11,12)가 맞닿은 용접라인(L) 상에 금속분말을 도포하는 것으로, 이는 금속부재(11,12)의 두께가 두꺼워도 금속분말이 용접라인(L) 내측으로 깊숙이 침투하여 먼저 용융되면서 용접부위의 결속력을 증대시키고 빠른 용접이 이루어질 수 있도록 한 것이다.The metal powder applying step (S20) is to apply a metal powder on the welding line (L) abutting the two metal members (11, 12) to weld different dissimilar metal materials quickly and firmly, which is a metal member Even though the thickness of (11, 12) is thick, the metal powder penetrates deep into the welding line (L) and melts first, thereby increasing the binding force of the welding site and enabling rapid welding.

바람직하게, 상기 금속분말은 용접대상인 두 개의 금속부재(11,12) 보다 상대적으로 융점이 낮은 재료가 적용되는 것으로, 니켈(Ni), 아연(Zn), 알루미늄(Al), 마그네슘(Mg), 구리(Cu), 셀렌(Se) 및 혼합 금속 분말 등으로 이루어진 군에서 선택되는 어느 하나가 적용될 수 있다.Preferably, the metal powder is a material having a lower melting point than the two metal members 11 and 12 to be welded. Nickel (Ni), zinc (Zn), aluminum (Al), magnesium (Mg), Any one selected from the group consisting of copper (Cu), selenium (Se), mixed metal powder, and the like may be applied.

상기 고주파 가열단계(S30)는 용접라인(L)을 형성하는 두 개의 금속부재(11,12) 중 어느 하나 이상에 대하여 고주파 가열을 통해 용접 전 예열이 이루어질 수 있도록 한 것으로, 이는 용접 대상 금속부재(11,12)의 예열을 통하여 빠르고 신뢰성 있는 용융 접합 용접이 이루어질 수 있도록 한 것이다. The high frequency heating step (S30) is to allow preheating before welding through high frequency heating to any one or more of the two metal members (11, 12) forming the welding line (L), which is a metal to be welded The preheating of (11, 12) allows fast and reliable melt joint welding.

또한, 상기 고주파 가열단계(S30)는 본 발명의 또 다른 실시예를 통해 용접 대상 금속부재(11,12) 중 어느 하나에 대하여 고주파 유도가열 원리를 적용하여 용접라인(L) 부위에 에너지를 발생시킬 수도 있다.In addition, the high frequency heating step (S30) generates energy in the welding line (L) by applying the high frequency induction heating principle to any one of the metal member (11, 12) to be welded through another embodiment of the present invention. You can also

상기 복합 용접단계(S40)는 서로 다른 물성을 갖는 이종 금속부재(11,12)를 신뢰성있고 빠르게 용접이 이루어질 수 있도록 한 것으로, 이종 금속부재(11,12)의 용접라인(L) 상부면은 마찰 교반용접에 의한 용접이 이루어지고, 이종 금속부재(11,12)의 용접라인(L) 하부면은 초음파 용접에 의한 접합이 이루어질 수 있도록 한 것이다.The composite welding step (S40) is to enable a reliable and fast welding of dissimilar metal members (11, 12) having different physical properties, the upper surface of the welding line (L) of the dissimilar metal members (11, 12) Welding is performed by friction stir welding, and the lower surface of the welding line L of the dissimilar metal members 11 and 12 is to be joined by ultrasonic welding.

바람직하게, 상기 마찰 교반용접과 초음파 용접은 용접라인(L)을 따라 동일한 일 방향으로 동일 속도로 이동하면서 용접이 이루어질 수 있도록 한다. Preferably, the friction stir welding and ultrasonic welding may be performed while moving at the same speed in the same one direction along the welding line (L).

또한, 상기 복합 용접단계(S40)에서는 용접과정 중 이종 금속부재(11,12)의 양 측방향에서 용접라인(L) 방향으로 가압하는 과정을 통해 빠르고 견고한 용접이 이루어질 수 있도록 한다.In addition, in the composite welding step (S40) through the process of pressing in the direction of the welding line (L) in both sides of the dissimilar metal member (11, 12) during the welding process to enable a fast and robust welding.

상기와 같이 본 발명은, 서로 다른 물성을 갖는 이종 금속부재(11,12)를 예열하면서 융점이 낮은 금속분말을 용접라인(L)에 도포하고, 마찰 교반용접 및 초음파 용접이 용접라인(L)을 따라 일 방향으로 이동하면서 용접과정이 이루어지되, 이때 이종 금속부재(11,12)의 양 측방향에서 용접라인(L) 부위로 가압하는 과정을 통해 빠르고 신뢰성있는 이종 재료의 용접이 이루어질 수 있도록 한 것이다. As described above, in the present invention, preheating the dissimilar metal members 11 and 12 having different physical properties, the metal powder having a low melting point is applied to the welding line L, and the friction stir welding and the ultrasonic welding are the welding line L. The welding process is performed while moving in one direction along this time, so that the welding of dissimilar materials can be performed quickly and reliably through the process of pressurizing the welding line (L) in both sides of the dissimilar metal members (11, 12). It is.

도 2는 본 발명의 실시예에 따른 이종 금속재료의 용접장치를 개략적으로 나타낸 구성도이다. 2 is a schematic view showing a welding apparatus for dissimilar metal materials according to an embodiment of the present invention.

상기와 같이, 본 발명의 실시예에 따른 이종 금속재료의 용접장치는, 서로 다른 물성을 갖는 이종 금속부재(11,12)가 상호 맞닿아 용접라인(L)을 형성하되, 상기 용접라인(L) 상부에는 마찰 교반 용접부(20)가 형성되고, 용접라인(L) 하부에는 초음파 용접부(30)가 형성된다. 또한, 용접라인(L)에서 용접이 진행되는 일 방향 어느 한 위치에 금속분말 공급부(40)가 형성되고, 상기 금속분말 공급부(40)와 인접된 어느 한 위치에는 고주파 가열부(50)가 형성되며, 이종 금속부재(11,12)의 양 측부에는 각각의 금속부재(11,12)를 용접부위에 해당하는 용접라인(L) 쪽으로 가압하기 위한 가압부(60)가 형성된 구성으로 이루어진다.As described above, in the welding device of dissimilar metal material according to the embodiment of the present invention, the dissimilar metal members 11 and 12 having different physical properties contact each other to form a welding line L, but the welding line L The friction stir welding part 20 is formed on the upper part, and the ultrasonic welding part 30 is formed on the lower part of the welding line L. In addition, the metal powder supply unit 40 is formed at any position in the welding line L in one direction in which the welding proceeds, and the high frequency heating unit 50 is formed at any position adjacent to the metal powder supply unit 40. Both sides of the dissimilar metal members 11 and 12 are configured to have pressing portions 60 for pressing the respective metal members 11 and 12 toward the welding line L corresponding to the welding portion.

상기 마찰 교반 용접부(20)는 마찰력 및 소성 유동 현상에 기초하여 물성이 다른 이종 금속부재(11,12)를 용접하기 위한 것으로, 이종 금속부재(11,12)의 용접라인(L) 부위에서 회면하면서 마찰열을 발생시키는 회전마찰부재(21)와, 상기 회전마찰부재에 동력을 전달하는 구동모터(22)를 포함하여 구성된다.The friction stir welding part 20 is for welding the dissimilar metal members 11 and 12 having different physical properties based on the friction force and the plastic flow phenomenon. While rotating friction member 21 for generating frictional heat, and a drive motor 22 for transmitting power to the rotation friction member is configured.

상기 초음파 용접부(30)는 용접을 위한 초음파를 발생시켜 인가하는 것으로, 진폭 5~30㎛ 범위의 초음파를 생성하여 전달될 수 있도록 함이 바람직하며, 초음파를 생성하고 전체적인 동작을 제어하는 초음파발진회로(31)와, 상기 초음파 출력이 용접부재에 전달될 수 있도록 한 초음파전달팁(32)을 포함하여 구성된다. The ultrasonic welding unit 30 is to generate and apply the ultrasonic wave for welding, it is preferable to be able to generate and deliver the ultrasonic wave in the range of 5 ~ 30㎛ amplitude, the ultrasonic wave generator for generating the ultrasonic wave and control the overall operation 31, and the ultrasonic wave transmission tip 32 so that the ultrasonic output can be transmitted to the welding member.

상기 금속분말 공급부(40)는 용접라인(L) 상의 용접 진행방향 중 어느 한 부위에 미세 금속분말을 공급하기 위한 것으로, 금속분말이 도포되는 공급노즐(41)과, 용접이 진행되는 과정 및 방향에 따라 미세 금속분말을 도포하기 위한 적절한 압력을 발생시키는 등 전체적인 제어 동작이 이루어지도록 한 컨트롤러(42)를 포함하여 구성된다.The metal powder supply unit 40 is for supplying fine metal powder to any one of the welding progress directions on the welding line L, the supply nozzle 41 to which the metal powder is applied, and the process and direction in which the welding proceeds. According to the present invention, the controller 42 is configured to perform an overall control operation such as generating an appropriate pressure for applying the fine metal powder.

상기 고주파 가열부(50)는 용접라인(L) 상의 용접 진행방향 중 어느 한 부위에 고주파 전달팁(51)이 배치되도록 하고, 고주파발생부(52)에서 고주파 전달팁(51)에 고주파신호를 발생 전달하여 금속부재(11,12)의 용접라인(L)에 고출력 에너지가 형성됨에 따라 예열에 따른 빠르고 신뢰성있는 용접이 이루어질 수 있도록 한 것이다.The high frequency heating unit 50 is arranged so that the high frequency transmission tip 51 is disposed in any part of the welding progress direction on the welding line L, and the high frequency generator 52 transmits a high frequency signal to the high frequency transmission tip 51. As the high output energy is formed in the welding line (L) of the metal members (11, 12) by generating and transferring, it is possible to perform a fast and reliable welding according to the preheating.

상기 가압부(60)는 각각의 금속부재(11,12) 양 측에 위치하여 각각의 금속부재(11,12)가 용접라인(L) 방향으로 가압될 수 있도록 한 것으로, 그 구성은 금속부재(11,12)를 고정할 수 있도록 한 고정지그(61)와 상기 고정지그(62)를 용접라인(L) 방향으로 가압하기 위한 엑츄에이터(62)를 포함하여 구성된다.The pressing unit 60 is positioned on both sides of each of the metal members 11 and 12 so that each of the metal members 11 and 12 can be pressed in the direction of the welding line L. The construction of the pressing member 60 is a metal member. It comprises a fixing jig 61 for fixing the (11, 12) and the actuator 62 for pressing the fixing jig 62 in the direction of the welding line (L).

본 발명은 특정한 실시예에 관하여 도시하고 설명하였으나, 이하의 특허청구범위에 의해 제공되는 본 발명의 기술적 사상을 벗어나지 않는 한도에서, 본 발명이 다양하게 개량 및 변화될 수 있다는 것은 당 업계에서 통상의 지식을 가진 자에게 있어서 자명하다고 할 것이다While the invention has been shown and described with respect to particular embodiments, it will be apparent to those skilled in the art that the present invention may be variously modified and changed without departing from the spirit of the invention provided by the following claims. Will be self-evident for those with knowledge

11, 12 : 금속부재
L : 용접라인
20 : 마찰 교반 용접부
21 : 회전마찰부재
22 : 구동모터
30 : 초음파 용접부
31 : 초음파발진회로
32 : 초음파전달팁
40 : 금속분말 공급부
41 : 공급노즐
42 : 컨트롤러
50 : 고주파 가열부
51 : 고주파 전달팁
52 : 고주파발생부
60 : 가압부
61 : 고정지그
62 : 엑츄에이터
11, 12: metal member
L: welding line
20: friction stir welding
21: rotating friction member
22: drive motor
30: ultrasonic welding
31: ultrasonic oscillation circuit
32: Ultrasonic Transfer Tip
40: metal powder supply unit
41: supply nozzle
42: controller
50: high frequency heating unit
51: high frequency transmission tip
52: high frequency generation unit
60: pressurization part
61: fixing jig
62: actuator

Claims (8)

삭제delete 삭제delete 삭제delete 삭제delete 삭제delete 삭제delete 서로 다른 융점을 갖는 이종 금속부재(11,12)를 용접하기 위한 장치에 있어서,
이종 금속부재(11,12)가 상호 맞닿아 용접라인(L)을 형성하고, 상기 용접라인(L) 상부에 형성되는 것으로, 회전하면서 마찰열을 발생시키는 회전마찰부재(21) 및 상기 회전마찰부재에 동력을 전달하는 구동모터(22)를 포함하는 마찰 교반 용접부(20);
상기 용접라인(L) 하부에 형성되고, 초음파 에너지로부터 열을 발생시켜 용접이 이루어지도록 하는 것으로, 초음파 생성 및 동작을 제어하는 초음파발진회로(31) 및 상기 초음파 출력이 용접부위에 집중 전달될 수 있도록 한 초음파전달팁(32)을 포함하는 초음파 용접부(30);
상기 금속부재(11,12)가 맞닿은 용접라인(L) 상부에 이종 금속부재(11,12) 보다 상대적으로 융점이 낮은 금속분말을 도포하는 것으로, 금속분말을 도포하는 공급노즐(41) 및 공급 압력 및 전체적인 동작을 제어하는 컨트롤러(42)를 포함하는 금속분말 공급부(40);
상기 금속부재(11,12)가 맞닿은 용접라인(L) 상에 고주파 가열을 통해 용접 전 예열이 이루어질 수 있도록 금속분말 공급부(40) 일측에 형성되며 고주파발생부(52) 및 고주파 전달팁(51)을 포함하는 고주파 가열부(50);
상기 금속부재(11,12)가 배치된 양측 부위에서 용접라인(L) 방향으로 금속부재(11,12)를 가압할 수 있도록 형성된 것으로, 금속부재(11,12)의 양측 부위를 고정하는 고정지그(61) 및 상기 고정지그(61)를 용접라인(L) 방향으로 가압하기 위한 엑츄에이터(62)를 포함하는 가압부(60);
를 포함하여 구성된 것을 특징으로 하는 이종 금속재료의 용접장치.
In the apparatus for welding dissimilar metal members (11, 12) having different melting points,
The dissimilar metal members 11 and 12 are in contact with each other to form a welding line L, and are formed on the welding line L, and the rotating friction member 21 and the rotating friction member which generate friction heat while rotating. Friction stir welding portion 20 including a drive motor for transmitting power to the;
It is formed below the welding line (L), to generate heat from the ultrasonic energy so that the welding is made, so that the ultrasonic oscillation circuit 31 for controlling the generation and operation of the ultrasonic wave and the ultrasonic output can be concentrated to the welding site An ultrasonic welding part 30 including an ultrasonic transmission tip 32;
A supply nozzle 41 for applying a metal powder and a supply by applying a metal powder having a lower melting point than the dissimilar metal members 11 and 12 to an upper portion of the welding line L in contact with the metal members 11 and 12. A metal powder supply unit 40 including a controller 42 for controlling pressure and overall operation;
It is formed on one side of the metal powder supply part 40 so as to preheat before welding through the high frequency heating on the welding line (L) in contact with the metal member (11, 12), the high frequency generator 52 and the high frequency transmission tip 51 High frequency heating unit 50 including;
It is formed to press the metal members (11, 12) in the direction of the welding line (L) on both sides of the metal member (11, 12) is arranged, the fixing to fix both sides of the metal member (11, 12) A pressing unit 60 including a jig 61 and an actuator 62 for pressing the fixing jig 61 in the welding line L direction;
Welding device of dissimilar metal material, characterized in that configured to include.
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JP2008110371A (en) * 2006-10-30 2008-05-15 Nippon Steel Corp Friction stir welding method and apparatus
JP2012040584A (en) * 2010-08-17 2012-03-01 Osaka Univ Method for bonding ferrous material
WO2018070317A1 (en) * 2016-10-11 2018-04-19 Jfeスチール株式会社 Friction stir welding method and device

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KR20110078518A (en) 2009-12-31 2011-07-07 재단법인 포항산업과학연구원 Welding method and apparatus for dissimilar metals

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JP2008110371A (en) * 2006-10-30 2008-05-15 Nippon Steel Corp Friction stir welding method and apparatus
JP2012040584A (en) * 2010-08-17 2012-03-01 Osaka Univ Method for bonding ferrous material
WO2018070317A1 (en) * 2016-10-11 2018-04-19 Jfeスチール株式会社 Friction stir welding method and device

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