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KR20220027614A - Bonding stainless steel pipe and manufacturing method thereof - Google Patents

Bonding stainless steel pipe and manufacturing method thereof Download PDF

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Publication number
KR20220027614A
KR20220027614A KR1020200108705A KR20200108705A KR20220027614A KR 20220027614 A KR20220027614 A KR 20220027614A KR 1020200108705 A KR1020200108705 A KR 1020200108705A KR 20200108705 A KR20200108705 A KR 20200108705A KR 20220027614 A KR20220027614 A KR 20220027614A
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South Korea
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stainless steel
steel pipe
joining
base material
bonding
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KR102472734B1 (en
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김갑수
고임현
김건홍
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삼원동관 주식회사
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Priority to PCT/KR2021/008082 priority patent/WO2022045555A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints
    • F16L13/02—Welded joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints
    • F16L13/02—Welded joints
    • F16L13/0209—Male-female welded joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, bars, tubes
    • B21C23/085—Making tubes
    • 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
    • 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
    • B23K20/16—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating with interposition of special material to facilitate connection of the parts, e.g. material for absorbing or producing gas
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/001—Interlayers, transition pieces for metallurgical bonding of workpieces
    • B23K35/004—Interlayers, transition pieces for metallurgical bonding of workpieces at least one of the workpieces being of a metal of the iron group
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3006—Ag as the principal constituent
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/48—After-treatment of electroplated surfaces
    • C25D5/50—After-treatment of electroplated surfaces by heat-treatment
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C25D7/04—Tubes; Rings; Hollow bodies
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/06—Tubes
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/34—Coated articles, e.g. plated or painted; Surface treated articles
    • 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
    • B23K2103/05—Stainless steel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/02—Rigid pipes of metal

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating With Molten Metal (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

본 발명은 접합용 스테인리스강 파이프 및 그 제조 방법에 관한 것으로서, 본 발명의 실시예에 의한 스테인리스강 파이프의 일 양태는, 스테인리스 강 재질의 파이프 형상으로 성형되고, 그 선단부가 타 부재와의 접합을 위한 접합부로 정의되는 모재; 및 상기 접합부의 외주면에 코팅되어 성형되고, 상기 모재의 접합시 용융되는 코팅층; 을 포함한다. 또한, 본 발명의 실시예에 의한 스테인리스강 파이프 제조 방법의 일 양태는, 스테인리스강 재질의 파이프 형상으로 모재가 성형되는 성형 단계; 및 타 부재와의 접합을 위한 접합부로 정의되는 상기 모재의 선단부에 코팅되어 코팅층이 형성되는 코팅 단계; 를 포함한다.The present invention relates to a stainless steel pipe for joining and a method for manufacturing the same, and an aspect of the stainless steel pipe according to an embodiment of the present invention is formed in a pipe shape of a stainless steel material, and the tip portion thereof is joined to another member. a base material defined as a joint for; and a coating layer coated and molded on the outer peripheral surface of the joint part and melted when the base material is joined; includes In addition, an aspect of the method for manufacturing a stainless steel pipe according to an embodiment of the present invention includes a forming step of forming a base material into a pipe shape of a stainless steel material; and a coating step in which a coating layer is formed by being coated on the front end of the base material, which is defined as a joint for joining with another member. includes

Description

접합용 스테인리스강 파이프 및 그 제조 방법{BONDING STAINLESS STEEL PIPE AND MANUFACTURING METHOD THEREOF}Stainless steel pipe for joining and manufacturing method thereof

본 발명은 접합용 스테인리스강 파이프 및 그 제조 방법에 관한 것으로, 보다 상세하게는, 은(Ag)이 부분적으로 코팅된 스테인레스강 파이프와, 이를 제조하는 방법에 관한 것이다.The present invention relates to a stainless steel pipe for joining and a method for manufacturing the same, and more particularly, to a stainless steel pipe partially coated with silver (Ag) and a method for manufacturing the same.

용접은 용접 대상이 되는 모재를 부분적으로 용융시켜서 접합하는 것으로, 파이프를 용융시켜서 접합 대상인 모재를 접합하는 브레이징(brazing) 접합 방법이 있다. 이러한 브레이징 접합에서는, 일반적으로 용가재가 용융되어 모재의 접합이 이루어진다.Welding is joining by partially melting a base material to be welded, and there is a brazing joining method in which a base material to be joined is welded by melting a pipe. In such brazing bonding, in general, the filler metal is melted to join the base metal.

일반적으로 용가재는, 은(Ag)을 포함한다. 그런데, 은(Ag)은, 용가재를 구성하는 타 원소에 비하여 상대적으로 고가이므로, 은(Ag)의 함량을 낮추는 것이 비용적인 면에서 유리하다. 그러나, 은(Ag)의 함량이 과도하게 낮은 경우에는, 접합 성능의 확보가 불가능하게 된다.In general, filler metal contains silver (Ag). However, since silver (Ag) is relatively expensive compared to other elements constituting the filler metal, lowering the content of silver (Ag) is advantageous in terms of cost. However, when the content of silver (Ag) is excessively low, it becomes impossible to secure bonding performance.

한편, 특히, 스테인리스 재질의 파이프의 표면에 은(Ag)을 도금하는 기술이 다수 개시되어 있다. 그러나, 이와 같은 종래 기술은, 파이프의 물적 특성, 예를 들면, 전기전도도나 열전도성 등의 향상을 위한 것이므로, 접합을 위하여 은(Ag)이 코팅되는 경우의 최적화된 값에 대한 고려가 되지 않고 있다.On the other hand, in particular, a number of techniques for plating silver (Ag) on the surface of a pipe made of stainless steel have been disclosed. However, since this prior art is for improving the physical properties of the pipe, for example, electrical conductivity or thermal conductivity, the optimized value when silver (Ag) is coated for bonding is not considered. there is.

대한민국 공개특허공보 제10-2016-0058795호 (명칭: 금속 도금 코팅 스텐레스재, 및 금속 도금 코팅 스텐레스재의 제조 방법)Korean Patent Laid-Open Publication No. 10-2016-0058795 (Name: metal plating coated stainless material, and method of manufacturing metal plating coated stainless material) 대한민국 등록특허공보 제10-1784023호 (명칭: 가동 접점 부품용 은코팅 복합재료와 그 제조방법 및 가동 접점 부품)Republic of Korea Patent Publication No. 10-1784023 (Name: Silver-coated composite material for movable contact parts, manufacturing method thereof, and movable contact parts)

본 발명은 상술한 바와 같은 종래 기술에 의한 문제점을 해결하기 위한 것으로, 본 발명의 목적은, 보다 경제적으로 접합 성능을 확보할 수 있도록 구성되는 접합용 스테인리스강 파이프 및 그 제조 방법을 제공하는 것이다.The present invention is to solve the problems caused by the prior art as described above, and an object of the present invention is to provide a stainless steel pipe for joining, which is configured to more economically secure joining performance, and a method for manufacturing the same.

상술한 목적을 달성하기 위한 본 발명의 실시예에 의한 접합용 스테인리스강 파이프는, 스테인리스강 재질의 파이프 형상으로 성형되고, 그 선단부가 타 부재와의 접합을 위한 접합부로 정의되는 모재 및 상기 접합부의 외주면에 적어도 은(Ag), 구리(Cu), 아연(Zn), 주석(Sn), 망간(Mn), 실리콘(Si) 및 인(P)을 포함하는 코팅재가 코팅되어 형성되는 코팅층을 포함할 수 있다.A stainless steel pipe for joining according to an embodiment of the present invention for achieving the above object is formed in a pipe shape of a stainless steel material, and the front end of the base material is defined as a joint for joining with other members, and the joint portion A coating layer formed by coating at least a coating material containing silver (Ag), copper (Cu), zinc (Zn), tin (Sn), manganese (Mn), silicon (Si) and phosphorus (P) on the outer peripheral surface. can

그리고, 상기 접합부에 대한 상기 코팅층을 형성하는 은(Ag)의 질량비는, 10wt% 이하일 수 있다.In addition, a mass ratio of silver (Ag) forming the coating layer to the bonding portion may be 10 wt% or less.

또한, 상기 코팅층의 두께는 1㎛ 내지 10㎛ 일 수 있다.In addition, the thickness of the coating layer may be 1㎛ to 10㎛.

그리고, 상기 모재의 선단에서부터 5mm 내지 20mm가 상기 접합부로 정의될 수 있다.And, 5 mm to 20 mm from the tip of the base material may be defined as the joint portion.

또한, 상기 접합부는, 요철 형상으로 요철부가 형성될 수 있다.In addition, the junction portion may have an uneven portion formed in a concave-convex shape.

그리고, 상기 요철부 상에 형성되는 홈의 깊이는, 10㎛미만 일 수 있다.In addition, a depth of the groove formed on the concave-convex portion may be less than 10 μm.

본 발명의 실시예에 의한 접합용 스테인리스강 파이프 제조 방법의 일 양태는, 스테인리스강 재질의 파이프 형상으로 모재가 성형되는 성형 단계; 및 타 부재와의 접합을 위한 접합부로 정의되는 상기 모재의 선단부에 코팅되어 코팅층이 형성되는 코팅 단계; 를 포함할 수 있다.One aspect of the method for manufacturing a stainless steel pipe for joining according to an embodiment of the present invention includes a forming step of forming a base material into a pipe shape of a stainless steel material; and a coating step in which a coating layer is formed by being coated on the front end of the base material, which is defined as a joint for joining with another member. may include

그리고, 상기 코팅 단계에서, 상기 접합부에 대한 상기 코팅층을 형성하는 은(Ag)의 질량비는, 10wt% 이하일 수 있다.In addition, in the coating step, a mass ratio of silver (Ag) forming the coating layer to the bonding portion may be 10 wt% or less.

또한, 상기 코팅 단계에서, 상기 코팅층의 두께는 1㎛ 내지 10㎛ 일 수 있다.In addition, in the coating step, the thickness of the coating layer may be 1㎛ to 10㎛.

그리고, 상기 코팅 단계에서, 상기 모재의 선단에서부터 5mm 내지 20mm가 상기 코팅층이 형성되는 상기 접합부로 정의될 수 있다.And, in the coating step, 5 mm to 20 mm from the front end of the base material may be defined as the bonding portion where the coating layer is formed.

또한, 상기 성형 단계에서, 상기 접합부는, 요철 형상으로 요철부가 형성될 수 있다.In addition, in the forming step, the junction portion may have an uneven portion formed in a concave-convex shape.

그리고, 상기 상기 성형 단계에서, 상기 요철부 상에 형성되는 홈의 깊이는, 10㎛미만일 수 있다.And, in the forming step, the depth of the groove formed on the concave-convex portion may be less than 10㎛.

본 발명의 실시예에 의한 접합용 스테인리스강 파이프에 의하면, 다음과 같은 효과를 기대할 수 있다.According to the stainless steel pipe for joining according to the embodiment of the present invention, the following effects can be expected.

먼저, 본 발명의 실시예에서는, 모재의 표면에 접합을 위한 코팅층, 실질적으로 은(Ag)을 포함하는 코팅층이 코팅된다. 특히, 본 발명의 실시예에서는, 용가재의 경우에 비하여 상대적으로 은(Ag)의 함량을 저감시키면서도 충분한 접합 성능의 확보가 가능하다. 따라서, 본 발명의 실시예에 의하면, 모재 및 코팅층의 경제적인 접합이 가능하게 된다.First, in an embodiment of the present invention, a coating layer for bonding, a coating layer substantially containing silver (Ag) is coated on the surface of a base material. In particular, in the embodiment of the present invention, it is possible to secure sufficient bonding performance while reducing the content of silver (Ag) relatively compared to the filler metal. Therefore, according to the embodiment of the present invention, economical bonding of the base material and the coating layer is possible.

또한, 본 발명의 실시예에서는, 모재의 요철부 상에 코팅층이 형성됨으로써, 단위 길이당 모재 및 코팅층의 접합 면적이 증가되고, 이로 인하여, 접합시 용융되는 코팅층이 모재와 접촉 면적도 증가하게 된다. 따라서, 본 발명의 실시예에 의하면, 스테인리스 모재 및 코팅층을 보다 견고하게 접합할 수 있게 된다.In addition, in the embodiment of the present invention, since the coating layer is formed on the uneven portion of the base material, the bonding area of the base material and the coating layer per unit length is increased, and therefore, the coating layer melted during bonding also increases the contact area with the base material. . Therefore, according to the embodiment of the present invention, it is possible to more firmly bond the stainless steel base material and the coating layer.

도 1은 본 발명의 제1실시예에 의한 접합용 스테인리스강 파이프를 보인 단면도.
도 2는 본 발명의 제1실시예에 의한 접합용 스테인리스강 파이프를 제조하는 방법을 보인 플로우 차트.
도 3은 본 발명의 제2실시예에 의한 접합용 스테인리스강 파이프를 보인 단면도.1 is a cross-sectional view showing a stainless steel pipe for joining according to a first embodiment of the present invention.
Figure 2 is a flow chart showing a method of manufacturing a stainless steel pipe for joining according to the first embodiment of the present invention.
3 is a cross-sectional view showing a stainless steel pipe for joining according to a second embodiment of the present invention.

이하에서는 본 발명의 제1실시예에 의한 접합용 스테인리스강 파이프을 첨부된 도면을 참조하여 보다 상세하게 설명한다.Hereinafter, a stainless steel pipe for joining according to a first embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

도 1은 본 발명의 제1실시예에 의한 접합용 스테인리스강 파이프를 보인 단면도이고, 도 2는 본 발명의 실시예에 의한 접합용 스테인리스강 파이프를 제조하는 방법을 보인 플로우 차트이다.1 is a cross-sectional view showing a stainless steel pipe for joining according to a first embodiment of the present invention, Figure 2 is a flowchart showing a method of manufacturing a stainless steel pipe for joining according to an embodiment of the present invention.

도 1 및 도 2를 참조하면, 본 실시예에 의한 접합용 스테인리스강 파이프(101)는, 스테인리스강 재질의 모재(111) 및 코팅층(121)을 포함한다. 실질적으로 상기 모재(111)는, 파이프 형상으로 성형되고, 상기 코팅층(121)은, 상기 모재(111)의 표면에 접합을 위하여 상기 코팅층(121)이 코팅된다. 그리고, 본 실시예에서는, 상기 접합용 스테인리스강 파이프(101)가 성형 단계(S110) 및 코팅 단계(S120)에 의하여 제조된다.1 and 2 , the stainless steel pipe 101 for bonding according to the present embodiment includes a base material 111 and a coating layer 121 made of stainless steel. Substantially, the base material 111 is molded into a pipe shape, and the coating layer 121 is coated with the coating layer 121 for bonding to the surface of the base material 111 . And, in this embodiment, the stainless steel pipe 101 for joining is manufactured by the forming step (S110) and the coating step (S120).

보다 상세하게는, 상기 성형 단계(S110)에서, 상기 모재(111)(112)가, 파이프 형상으로 성형된다. 예를 들면, 상기 성형 단계(S110)에서는, 상기 모재(111)(112)가 압출이나 인발 가공에 의하여 성형된다.More specifically, in the forming step (S110), the base materials 111 and 112 are molded into a pipe shape. For example, in the forming step (S110), the base materials 111 and 112 are molded by extrusion or pultrusion processing.

다음으로, 상기 코팅 단계(S120)에서는, 적어도 은(Ag), 구리(Cu), 아연(Zn), 주석(Sn), 망간(Mn), 실리콘(Si) 및 인(P)을 포함하는 코팅재가, 상기 모재(111)의 외주면 일부, 즉 상기 모재(111)의 접합부(111A) 상에 기설정된 두께 이상으로 코팅되어 상기 코팅층(121)이 형성된다. 따라서, 실질적으로, 상기 코팅층(121)은, 상기 모재(111)의 단부, 즉 상기 접합부(111A)가 접합을 위하여 동 파이프(200)의 내부에 위치되면, 동 파이프(200)의 내주면에 접촉될 것이다. 예를 들면, 상기 코팅층(121)은, 상기 모재(111)의 접합부(111A) 상에 도금 또는 소결되어 형성될 수 있다.Next, in the coating step (S120), a coating material containing at least silver (Ag), copper (Cu), zinc (Zn), tin (Sn), manganese (Mn), silicon (Si) and phosphorus (P) A, a portion of the outer peripheral surface of the base material 111, that is, a portion of the base material 111 is coated on the bonding portion 111A of the base material 111 to a predetermined thickness or more to form the coating layer 121. Accordingly, substantially, the coating layer 121 is in contact with the inner circumferential surface of the copper pipe 200 when the end of the base material 111, that is, the bonding portion 111A is located inside the copper pipe 200 for bonding. will be For example, the coating layer 121 may be formed by plating or sintering on the bonding portion 111A of the base material 111 .

한편, 본 실시예에서는, 상기 코팅 단계(S120)가, 도금 단계(S121) 및 열처리 단계(S122)를 포함할 수 있다. 상기 코팅 단계(S120)에서는, 상기 코팅재가, 상기 모재(111)의 접합부(111A) 상에 도금되어 상기 코팅층(121)이 형성된다. 그리고 상기 열처리 단계(S122)에서는, 상기 모재(111) 및 코팅층(121)이 열처리된다. Meanwhile, in the present embodiment, the coating step (S120) may include a plating step (S121) and a heat treatment step (S122). In the coating step ( S120 ), the coating material is plated on the bonding portion 111A of the base material 111 to form the coating layer 121 . And in the heat treatment step (S122), the base material 111 and the coating layer 121 is heat-treated.

특히, 상기 도금 단계(S121)에서, 상기 코팅층(121)은, 상기 모재(111)의 접합부(111A)에 적어도 은(Ag), 구리(Cu), 아연(Zn), 주석(Sn), 망간(Mn), 실리콘(Si) 및 인(P)을 포함하는 코팅재가 기설정된 두께(T1)로 코팅되어 형성된다. 그리고, 본 실시예에서는, 상기 코팅층(121)의 은(Ag)의 질량비는, 10wt% 이하일 수 있다. 또한, 도금되는 코팅재의 두께, 예를 들면, 상기 코팅층(121)의 두께(T1)는, 1㎛ 내지 10㎛ 일 수 있다. 바람직하게는, 상기 코팅층(121)의 두께(T1)는 2㎛ 내지 3㎛ 일 수 있다. 그리고, 상기 코팅층(121)이 형성되는 상기 접합부(111A)는, 상기 모재(111)의 선단에서부터 5mm 내지 20mm로 정의될 수 있다. 예를 들어, 상기 접합부(111A)의 길이는 5mm 내지 13mm 일 수 있다.In particular, in the plating step ( S121 ), the coating layer 121 is at least silver (Ag), copper (Cu), zinc (Zn), tin (Sn), and manganese on the joint portion 111A of the base material 111 . A coating material including (Mn), silicon (Si) and phosphorus (P) is coated to a predetermined thickness T1 and is formed. And, in this embodiment, the mass ratio of silver (Ag) in the coating layer 121 may be 10 wt% or less. In addition, the thickness of the coating material to be plated, for example, the thickness T1 of the coating layer 121 may be in a range of 1 μm to 10 μm. Preferably, the thickness T1 of the coating layer 121 may be 2 μm to 3 μm. In addition, the bonding portion 111A on which the coating layer 121 is formed may be defined to be 5 mm to 20 mm from the tip of the base material 111 . For example, the length of the bonding portion 111A may be 5 mm to 13 mm.

다음으로, 상기 열처리 단계(S122)에서는, 상기 모재(111) 및 코팅층(121)이 수소 분위기 하에서 800 내지 950℃의 온도에서 열처리된다. 상기 열처리 단계(S122)는, 상기 모재(111) 및 코팅층(121)의 접합력을 향상시켜서 상기 코팅층(121)의 박리, 즉, 상기 접합용 스테인리스강 파이프(100) 및 동 파이프(200)의 접합시 상기 모재(111)로부터의 상기 코팅층(121)의 박리를 방지하는 역할을 한다. 그리고 본 실시예에서는, 상기 열처리 단계(S122)가 수소 분위기 하에서 이루어짐으로써, 상기 코팅층(120)의 산화가 방지될 수 있다.Next, in the heat treatment step (S122), the base material 111 and the coating layer 121 is heat-treated at a temperature of 800 to 950 ℃ under a hydrogen atmosphere. In the heat treatment step (S122), the bonding strength between the base material 111 and the coating layer 121 is improved, so that the coating layer 121 is peeled, that is, the bonding of the stainless steel pipe 100 and the copper pipe 200 for bonding. It serves to prevent peeling of the coating layer 121 from the base material 111 during the operation. And in this embodiment, since the heat treatment step (S122) is performed under a hydrogen atmosphere, oxidation of the coating layer 120 can be prevented.

이하에서는 본 발명의 제2실시예에 의한 접합용 스테인리스강 파이프을 첨부된 도면을 참조하여 보다 상세하게 설명한다.Hereinafter, a stainless steel pipe for joining according to a second embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

도 3은 본 발명의 제2실시예에 의한 접합용 스테인리스강 파이프를 보인 단면도이다. 본 실시예의 구성 요소 중 상술한 본 발명의 제1실시예와 동일한 구성 요소에 대해서는, 도 1 및 도 2의 도면부호를 원용하고, 이에 대한 상세한 설명을 생략하기로 한다.3 is a cross-sectional view showing a stainless steel pipe for joining according to a second embodiment of the present invention. Among the components of the present embodiment, the same reference numerals in FIGS. 1 and 2 are used for the same components as those of the first embodiment of the present invention described above, and detailed description thereof will be omitted.

도 3을 참조하면, 본 실시예에 의한 접합용 스테인리스강 파이프(102)는, 모재(112)의 선단, 즉 접합부(112A)에 요철부(113)가 형성되고, 상기 요철부(113) 상에 코팅되어 코팅층(120)이 형성된다. 예를 들면, 상기 요철부(113)는, 성형 단계(S110)에서 압출이나 인발된 후 절삭과 같은 후가공에 의하여 형성될 수 있다.Referring to FIG. 3 , in the stainless steel pipe 102 for joining according to this embodiment, an uneven portion 113 is formed at the tip of the base material 112 , that is, the joint portion 112A, and on the uneven portion 113 . is coated to form a coating layer 120 . For example, the concave-convex portion 113 may be extruded or drawn in the forming step ( S110 ) and then formed by post-processing such as cutting.

상기 요철부(113)는, 상기 모재(112)의 외주면이 함몰되어 정의되는 다수개의 홈(114)을 포함한다. 물론, 상기 요철부(113)가 상기 모재(112)의 외주면이 돌출되어 정의되는 다수개의 돌기를 포함할 수도 있을 것이다. 본 실시예에서는, 상기 홈(114)의 깊이(D)가, 10㎛ 미만, 바람직하게는, 3㎛의 값으로 설정될 수 있다.The concave-convex portion 113 includes a plurality of grooves 114 defined by the outer circumferential surface of the base material 112 being depressed. Of course, the concave-convex portion 113 may include a plurality of protrusions defined by the protruding outer circumferential surface of the base material 112 . In the present embodiment, the depth D of the groove 114 may be set to a value of less than 10 μm, preferably, 3 μm.

한편, 상기 코팅층(122)의 두께(T2)는, 1㎛ 내지 10㎛, 바람직하게는, 2㎛ 내지 3㎛이다. 그런데, 실질적으로 상기 코팅층(122)은, 상기 요철부(113) 상에 형성되므로, 상기 코팅층(122)의 두께(T2)는, 상기 요철부(113) 상에 해당하는 상기 스테인리스 파이프(102)의 외주면, 즉, 실질적으로 상기 홈(114)의 기저부를 기준으로 상기 코팅층(122)의 외면까지의 두께로 이해될 수 있다. On the other hand, the thickness (T2) of the coating layer 122, 1㎛ to 10㎛, preferably, 2㎛ to 3㎛. However, since the coating layer 122 is substantially formed on the uneven portion 113 , the thickness T2 of the coating layer 122 is the stainless pipe 102 corresponding to the uneven portion 113 . It can be understood as the thickness of the outer peripheral surface of the , that is, substantially from the base of the groove 114 to the outer surface of the coating layer 122 .

따라서, 본 실시예에서는, 상기 요철부(113)에 의하여 단위 길이당 상기 모재(112) 및 코팅층(122)의 접합 면적이 증가된다. 그리고 이와 같은 상기 요철부(113)의 작용, 효과에 의하여, 상기 모재(112) 및 코팅층(122)의 접합력이 증가되고, 상기 모재(112) 및 동 파이프(200), 즉 상기 스테인리스 파이프(102) 및 동 파이프(200) 사이에 충분한 두께(T2)의 코팅재가 배치됨으로써, 종국적으로 상기 스테인리스 파이프(102) 및 동 파이프(200)의 접합 성능의 향상을 기대할 수 있게 된다.Accordingly, in the present embodiment, the bonding area between the base material 112 and the coating layer 122 per unit length is increased by the concavo-convex portion 113 . And by the action and effect of the concavo-convex portion 113 , the bonding force between the base material 112 and the coating layer 122 is increased, and the base material 112 and the copper pipe 200 , that is, the stainless pipe 102 . ) and a coating material having a sufficient thickness (T2) is disposed between the copper pipe 200, and ultimately, the improvement of the bonding performance of the stainless pipe 102 and the copper pipe 200 can be expected.

본 발명의 권리범위는 위에서 설명된 실시예에 한정되지 않고 특허청구범위에 기재된 바에 의해 정의되며, 본 발명의 기술분야에서 통상의 지식을 가진 자가 특허청구범위에 기재된 권리범위 내에서 다양한 변형과 개작을 할 수 있다는 것은 자명하다.The scope of the present invention is not limited to the embodiments described above, but is defined by the claims, and various modifications and adaptations within the scope of the claims by those of ordinary skill in the art of the present invention It is self-evident that you can

101: 스테인리스강 파이프 111: 모재
111A: 접합부 121: 코팅층
113: 요철부 200: 동 파이프101: stainless steel pipe 111: base material
111A: bonding portion 121: coating layer
113: uneven portion 200: copper pipe

Claims (12)

스테인리스 강 재질의 파이프 형상으로 성형되고, 그 선단부가 타 부재와의 접합을 위한 접합부(111A)(112A)로 정의되는 모재(111)(112); 및
상기 접합부(111A)(112A)의 외주면에 코팅되어 성형되고, 상기 모재(111)(112)의 접합시 용융되는 코팅층(121)(122); 을 포함하는 접합용 스테인리스강 파이프.
Preforms 111 and 112 formed in a pipe shape made of stainless steel and defined as joint portions 111A and 112A for their distal ends for bonding with other members; and
Coating layers 121 and 122 that are coated and molded on the outer peripheral surface of the bonding portions 111A and 112A and melted when bonding the base materials 111 and 112; Stainless steel pipe for joining with
 제 1 항에 있어서,
상기 코팅층(121)(122)은, 적어도 은(Ag), 구리(Cu), 아연(Zn), 주석(Sn), 망간(Mn), 실리콘(Si) 및 인(P)을 포함하고,
상기 코팅층(121)(122)에서 은(Ag)의 질량비는, 10wt% 이하인 접합용 스테인리스강 파이프.
The method of claim 1,
The coating layers 121 and 122 include at least silver (Ag), copper (Cu), zinc (Zn), tin (Sn), manganese (Mn), silicon (Si) and phosphorus (P),
The mass ratio of silver (Ag) in the coating layers 121 and 122 is 10 wt% or less for joining stainless steel pipes.
 제 2 항에 있어서,
상기 코팅층(121)의 두께(T1)(T2)는 1㎛ 내지 10㎛ 인 접합용 스테인리스강 파이프.
3. The method of claim 2,
The thickness (T1) (T2) of the coating layer 121 is 1㎛ to 10㎛ stainless steel pipe for bonding.
 제 3 항에 있어서,
상기 모재(111)의 선단에서부터 5mm 내지 20mm가 상기 접합부(111A)로 정의되는 접합용 스테인리스강 파이프.
4. The method of claim 3,
A stainless steel pipe for joining in which 5 mm to 20 mm from the tip of the base material 111 is defined as the joint portion 111A.
 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,
상기 접합부(112A)는, 요철 형상으로 요철부(113)가 형성되는 접합용 스테인리스강 파이프.
5. The method according to any one of claims 1 to 4,
The joining portion 112A is a stainless steel pipe for joining in which the concave-convex portion 113 is formed in a concave-convex shape.
 제 5 항에 있어서,
상기 요철부(113) 상에 형성되는 홈(114)의 깊이(D)는, 10㎛ 미만인 접합용 스테인리스강 파이프.
6. The method of claim 5,
The depth (D) of the groove (114) formed on the uneven portion (113) is less than 10㎛ stainless steel pipe for joining.
 스테인리스강 재질의 파이프 형상으로 모재(111)(112)가 성형되는 성형 단계(S110); 및
상기 접합부(111A)(112A)의 외주면에 코팅되어 성형되고, 상기 모재(111)(112)의 접합시 용융되는 코팅층(121)(122)이 형성되는 코팅 단계(S120); 를 포함하는 접합용 스테인리스강 파이프 제조 방법.
A forming step (S110) in which the base material 111, 112 is formed into a pipe shape of a stainless steel material; and
A coating step (S120) of coating and molding the outer peripheral surface of the bonding portion (111A) (112A) and forming a coating layer (121) (122) that is melted when bonding the base material (111) (112); A method of manufacturing a stainless steel pipe for joining comprising a.
 제 7 항에 있어서,
상기 코팅 단계(S120)에서,
상기 코팅층(121)(122)은, 적어도 은(Ag), 구리(Cu), 아연(Zn), 주석(Sn), 망간(Mn), 실리콘(Si) 및 인(P)을 포함하고,
상기 코팅층(121)(122)에서 은(Ag)의 질량비는, 10wt% 이하인 접합용 스테인리스강 파이프 제조 방법.
8. The method of claim 7,
In the coating step (S120),
The coating layers 121 and 122 include at least silver (Ag), copper (Cu), zinc (Zn), tin (Sn), manganese (Mn), silicon (Si) and phosphorus (P),
The mass ratio of silver (Ag) in the coating layers 121 and 122 is 10 wt% or less.
 제 8 항에 있어서,
상기 코팅 단계(S120)에서,
상기 코팅층(121)의 두께(T1)(T2)는 1㎛ 내지 10㎛ 인 접합용 스테인리스강 파이프 제조 방법.
9. The method of claim 8,
In the coating step (S120),
The thickness (T1) (T2) of the coating layer 121 is 1㎛ to 10㎛ method of manufacturing a stainless steel pipe for bonding.
 제 9 항에 있어서,
상기 코팅 단계(S120)에서,
상기 모재(111)의 선단에서부터 5mm 내지 20mm가 상기 코팅층(121)이 형성되는 상기 접합부(111A)로 정의되는 접합용 스테인리스강 파이프 제조 방법.
10. The method of claim 9,
In the coating step (S120),
A method of manufacturing a stainless steel pipe for joining, in which 5 mm to 20 mm from the tip of the base material 111 is defined as the joint portion 111A on which the coating layer 121 is formed.
 제 7 항 내지 제 10 항 중 어느 한 항에 있어서,
상기 성형 단계(S110)에서,
상기 접합부(112A)는, 요철 형상으로 요철부(113)가 형성되는 접합용 스테인리스강 파이프.
11. The method according to any one of claims 7 to 10,
In the forming step (S110),
The joining portion 112A is a stainless steel pipe for joining in which the concave-convex portion 113 is formed in a concave-convex shape.
 제 11 항에 있어서,
상기 성형 단계(S110)에서,
상기 요철부(113) 상에 형성되는 홈(114)의 깊이(D)는, 0.5㎛ 내지 5㎛ 인 접합용 스테인리스강 파이프.12. The method of claim 11,
In the forming step (S110),
The depth D of the groove 114 formed on the concave-convex portion 113 is 0.5 μm to 5 μm.
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JPH08267228A (en) * 1995-03-28 1996-10-15 Nippon Light Metal Co Ltd Joint structure of aluminum pipe and copper pipe
KR200221322Y1 (en) * 2000-11-28 2001-04-16 주식회사코텍 High-polymer resin thermal spray coating metal pipe
KR101784023B1 (en) 2010-02-12 2017-10-10 후루카와 덴키 고교 가부시키가이샤 Silver-coated composite material for movable contact component, method for producing same, and movable contact component
KR20160058795A (en) 2013-09-20 2016-05-25 도요 고한 가부시키가이샤 Metal-plated stainless steel material, and production method for metal-plated stainless steel material
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