KR20040036342A - Fabrication of titanium/steel clad plate - Google Patents

Fabrication of titanium/steel clad plate Download PDF

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KR20040036342A
KR20040036342A KR1020020065318A KR20020065318A KR20040036342A KR 20040036342 A KR20040036342 A KR 20040036342A KR 1020020065318 A KR1020020065318 A KR 1020020065318A KR 20020065318 A KR20020065318 A KR 20020065318A KR 20040036342 A KR20040036342 A KR 20040036342A
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South Korea
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titanium
aluminum
iron alloy
plate
alloy
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KR1020020065318A
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Korean (ko)
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KR100470146B1 (en
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지광구
홍경태
홍유표
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한국과학기술연구원
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/013—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B2038/0052—Other operations not otherwise provided for
    • B32B2038/0092—Metallizing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/06—Coating on the layer surface on metal layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B32B2255/205—Metallic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/02—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2311/00—Metals, their alloys or their compounds
    • B32B2311/18—Titanium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2311/00—Metals, their alloys or their compounds
    • B32B2311/24—Aluminium

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

PURPOSE: A preparation method of titanium/iron alloy/titanium clad sheets is provided to be economical at the low temperature and to prevent the physical property of titanium from deteriorating in preparing the titanium/iron alloy clad material. CONSTITUTION: The preparation method of titanium/iron alloy/titanium clad sheets comprises the steps of: inserting aluminum or aluminum alloy sheets between iron alloy sheets and titanium sheets and laminating; bonding by hot rolling the laminated sheets under the air without an atmospheric gas at 200 to 450 deg.C; and diffusion treating the inserted aluminum of the bonded sheets at 250 to 450 deg.C. The titanium/iron alloy/titanium clad sheets comprise aluminum or aluminum alloy as an intermediate material between titanium and iron alloy.

Description

티타늄/철합금 클래드 판재 제조방법{FABRICATION OF TITANIUM/STEEL CLAD PLATE}Titanium / Iron Alloy Clad Plate Manufacturing Method {FABRICATION OF TITANIUM / STEEL CLAD PLATE}

본 발명은 티타늄/철합금 클래드 판재 제조방법에 관한 것이다.The present invention relates to a method for producing a titanium / iron alloy clad plate material.

철 또는 스테인레스강 등의 발열성 자성금속판과 열전도성 알루미늄 또는 알루미늄 합금판으로이루어진 복합판재에 알루미늄 또는 알루미늄합금판을 안쪽에 배치하는 딥드로잉(deep drawing) 등의 프레스성형가공함으로써, 상기 복합재료로부터 밥솥(rice cooker)의 내부용기 등의 전자쿠커에 이용되는 용기를 제조하고 있다.From the composite material by press forming processing such as a deep drawing in which an aluminum or aluminum alloy plate is placed in a composite plate made of a heat generating magnetic metal plate such as iron or stainless steel and a thermally conductive aluminum or aluminum alloy plate. Containers for use in electronic cookers such as inner containers of rice cookers are manufactured.

클래드 판재는 이와 같이 자성금속판과 알루미늄 또는 알루미늄합금판을 압연처리 등에 의하여 복층으로 형성한 것이다.The clad plate material is formed by forming a magnetic metal plate and an aluminum or aluminum alloy plate in multiple layers by rolling or the like.

현재 클래드 판재 중에 많이 사용되고 있는 것은 알루미늄(Al)과 스텐레스강(Stainless Steel : STS)의 조합으로 된 Al/STS 클래드 판재이다. 한편, 또 다른 클래드 판재로 티타늄/철합금 클래드 판재가 있다.Currently, a lot of clad plates are Al / STS clad plates made of a combination of aluminum (Al) and stainless steel (STS). Meanwhile, another clad plate is a titanium / iron alloy clad plate.

티타늄은 내식 내후성이 우수하고 특히 염소이온이 함유된 분위기에서 백금에 필적할 정도로 부식 저항성이 뛰어나, 해양구조물이나 석유화학 용기에 이용이 적합하다. 그리고 가볍고 표면이 미려하여 소위 보존불요(maintenance-free) 금속으로 알려져 있다. 따라서 열교환기, 석유화학 공업, 건축물의 외부 파넬, 주방용기 등으로 각광을 받고 있다.Titanium has excellent corrosion resistance and corrosion resistance, especially comparable to platinum in an atmosphere containing chlorine ions, and is suitable for use in marine structures and petrochemical containers. Its lightweight and beautiful surface makes it known as a so-called maintenance-free metal. Therefore, it is in the spotlight as a heat exchanger, a petrochemical industry, an exterior panel of a building, and a kitchen container.

그러나 티타늄은 워낙 값이 비싸 큰 구조물의 전체로 이용되기에는 가격적인 제한이 있다. 따라서 내식성이나 외관이 중요한 분야에서는 철강판재에 얇은 티타늄을 입히는 소위 클래드재를 이용하는 것이 바람직하다.However, titanium is so expensive that there is a price limit to use it as a whole for large structures. Therefore, in a field where corrosion resistance and appearance are important, it is preferable to use a so-called clad material which coats thin titanium on a steel sheet.

티타늄/철합금 클래드재의 제조방법으로는 확산접합법, 육성용접법, 폭발용접법, 저항용접법 등이 있다. 확산법은 1000℃ 정도의 고온에서 불활성 분위기에서 장시간 처리해야 하므로 비용이 많이 들고 생산성이 낮다. 또한 용접법에서는 불활성 분위기를 유지해야하며 국부적인 용해 및 응고가 일어나므로 티타늄 원소재의 조직의 변화로 인한 내식특성, 기계적성질 등의 저하가 문제가 된다.Titanium / iron alloy cladding material manufacturing methods include diffusion bonding, growth welding, explosion welding, resistance welding, and the like. The diffusion method is expensive and low in productivity because it has to be treated for a long time in an inert atmosphere at a high temperature of about 1000 ° C. In addition, the welding method must maintain an inert atmosphere, so that local dissolution and solidification occur, so that deterioration of corrosion resistance and mechanical properties due to the change of the structure of the titanium raw material becomes a problem.

따라서 본 발명의 목적은 낮은 온도에서 경제적인 방법으로 티타늄/철합금 클래드재를 제조하는데 있다.It is therefore an object of the present invention to produce titanium / iron alloy clad materials in an economical way at low temperatures.

또한 본 발명의 목적은 티타늄/철합금 클래드재 제조시 티타늄의 물성 저하를 방지하는데 있다.In addition, an object of the present invention is to prevent the reduction of physical properties of titanium in the production of titanium / iron alloy clad material.

도 1은 본 발명에 따른 실시예로서 별도의 알루미늄 판을 삽입하여 티타늄과 철합금을 접합하는 방법을 보여주는 모식도이다.1 is a schematic diagram showing a method for joining titanium and iron alloy by inserting a separate aluminum plate as an embodiment according to the present invention.

도 2는 본 발명에 따른 실시예로서 용융 알루미늄을 도금하여 티타늄과 철합금을 접합하는 방법을 보여주는 모식도이다.Figure 2 is a schematic diagram showing a method of bonding titanium and iron alloy by plating molten aluminum as an embodiment according to the present invention.

도 3은 용융 알루미늄이 도금된 저탄소강의 단면을 보여주는 사진이다.3 is a photograph showing a cross section of a low carbon steel plated with molten aluminum.

도 4는 도 3의 저탄소강에 티타늄을 압연 클래드한 후의 단면을 보여주는 사진이다.4 is a photograph showing a cross section after rolling cladding titanium on the low carbon steel of FIG.

상기 목적을 달성하기 위하여 본 발명에서는 알루미늄 또는 알루미늄 합금을 중간재로 사용한 티타늄/철합금 클래드 판재를 제공한다.In order to achieve the above object, the present invention provides a titanium / iron alloy clad plate using aluminum or an aluminum alloy as an intermediate material.

중간재인 알루미늄 또는 알루미늄 합금의 두께는 0.01 - 1.0mm 인 것이 바람직하다.It is preferable that the thickness of aluminum or an aluminum alloy which is an intermediate material is 0.01-1.0 mm.

또한, 본 발명은 철합금 판재와 티타늄 판재 사이에 알루미늄 또는 알루미늄합금 판재를 삽입하여 적층하고, 상기 적층된 판재를 분위기 가스 없이 대기하에서 200-450℃의 범위에서 열간 압연하여 접합하고, 접합된 판재를 250-450℃의 범위에서 삽입된 알루미늄을 확산처리하는 것을 포함하여 구성되는 티타늄/철합금/티타늄 클래드 판재 제조방법을 제공한다.In addition, the present invention is inserted by laminating an aluminum or aluminum alloy plate between the iron alloy plate and the titanium plate, the laminated plate is hot-rolled in the range of 200-450 ℃ in the atmosphere without an atmosphere gas, and bonded to the plate It provides a method for producing a titanium / iron alloy / titanium clad plate comprising a diffusion treatment of the aluminum inserted in the range of 250-450 ℃.

상기 제조방법에서 철합금 판재의 표면에 미리 용융도금으로 알루미늄 또는 알루미늄 합금을 코팅하고, 코팅된 철합금 판재의 표면에 티타늄 판재를 적층하여 클래드 판재를 제조할 수 도 있다.In the above manufacturing method, the surface of the iron alloy plate may be coated with aluminum or an aluminum alloy by hot-dip plating in advance, and the clad plate may be manufactured by laminating a titanium plate on the surface of the coated iron alloy plate.

알루미늄은 내산화성이 우수하고 300℃ 근방의 낮은 온도에서 확산이 잘 일어나 티타늄이나 철합금 모두에 우수한 접합성을 나타낸다. 또한 철합금에 알루미늄을 용융 도금한 제품이 상업적으로 생산되고 있어 이를 이용한다면 매우 경제적으로 티타늄/철합금 클래드재를 제조할 수 있다.Aluminum has excellent oxidation resistance and diffuses well at low temperatures around 300 ° C, and shows excellent bonding to both titanium and iron alloys. In addition, since the product of the aluminum alloy hot-dip galvanized is commercially produced, it is possible to manufacture a titanium / iron alloy clad material very economically.

본 발명에서는 적절한 중간재로알루미늄을 사용하여 낮은 온도의 대기 분위기에서 열간압연법으로 티타늄/철합금 클래드재를 제조한다. 이 방법은 경제성이 높고, 처리온도가 낮아 용해나 산화가 일어나지 않아 티타늄 등의 내식특성, 기계적 성질 등을 그대로 유지할 수 있다는 장점이 있다.In the present invention, a titanium / iron alloy clad material is manufactured by hot rolling in a low temperature atmosphere using aluminum as a suitable intermediate material. This method has the advantage of high economical efficiency and low processing temperature, so that dissolution or oxidation does not occur, so that corrosion resistance and mechanical properties of titanium and the like can be maintained.

티타늄과 철합금 사이에 알루미늄이 중간재로 삽입된 상태에서 열간압연하여 접합시키고, 이 후 다시 확산처리하면 알루미늄이 티타늄 및 철합금에 확산되면서 강력한 접합을 이루게 된다.Aluminum is interposed between titanium and iron alloys by hot rolling in the state of being inserted as an intermediate material, and then diffused again to form a strong bond as aluminum diffuses into titanium and iron alloys.

알루미늄을 중간재로 이용하여 접합하는 방법은 크게 두 가지로 대별될 수 있다. 먼저 도 1에서 볼 수 있는 바와 같이, 알루미늄을 별도의 판으로 삽입하여 접합하는 방법이 있다. 이 방법의 경우 열간압연 온도가 200 - 400℃ 정도이므로 스텐레스 강에 티타늄을 접합시에는 문제가 없으나 일반 탄소강은 산화되어 알루미늄과 탄소강의 접합에 다소 문제가 있을 수 있다.Joining using aluminum as an intermediate material can be roughly divided into two methods. First, as can be seen in Figure 1, there is a method of joining by inserting aluminum into a separate plate. In this method, since the hot rolling temperature is about 200-400 ° C, there is no problem when joining titanium to stainless steel, but general carbon steel may be oxidized and thus there may be a problem in joining aluminum and carbon steel.

다른 방법으로 도 2에 도시된 바와 같이 철합금에 미리 알루미늄을 도금한 다음 티타늄에 클래드시키는 방법이 있다. 이 방법에 의하면 스텐레스는 물론 클래드 압연시 산화가 염려되는 일반 탄소강에도 쉽게 티타늄을 클래드 접합할 수 있다.Alternatively, as shown in FIG. 2, aluminum is pre-plated on an iron alloy and then clad on titanium. According to this method, titanium can be easily clad bonded to stainless steel as well as to ordinary carbon steel, which is concerned about oxidation during clad rolling.

실시예Example

1.1mm 두께의 일반 저탄소강에 용융 알루미늄을 도금하여 약 15㎛ 두께의 알루미늄 층을 얻었다. 도 3은 그 단면을 나타낸다. 이렇게 알루미늄이 도금되면 대략 550℃까지 산화되지 않는다. (용융 알루미늄 도금된 탄소강이나 스텐레스강은 시중에서 쉽게 구할 수 있다.)Molten aluminum was plated on 1.1 mm thick ordinary low carbon steel to obtain a layer of aluminum about 15 μm thick. 3 shows its cross section. When aluminum is plated, it is not oxidized to about 550 ° C. (Molten aluminum-plated carbon steel or stainless steel is readily available on the market.)

0.3mm 두께의 티타늄 판재와 상기의 탄소강을 겹쳐 280℃에서 25%정도의 압하율로 압연하여 접합한 다음 330℃에서 30분 확산처리 하였다. 도 4는 티타늄을 접합한 후의 조직사진을 나타낸 것이다.The 0.3 mm thick titanium sheet and the carbon steel were laminated and rolled at a reduction ratio of about 25% at 280 ° C., followed by diffusion treatment at 330 ° C. for 30 minutes. Figure 4 shows a tissue photograph after bonding titanium.

이와 같이 제작한 Ti/Fe/Ti 클래드 판은 연신율이 32% 이고 접합강도가 650 N/inch ('T' peel test에 의한 측정)으로 우수한 값을 나타내었다. 또한 LDR (limiting draw ratio) 2.0으로 딥드로잉 (deep drawing) 한 결과 박리나 크랙 등이 나타나지 않아 성형성도 우수함을 확인하였다. 이에 비하여 기존의 접합방법으로는 클래드의 경우 온도가 1000℃근방으로 상승하여 산화 등이 일어나 연신율이 20%정도에 그치고, 딥드로잉시 쉽게 파손되는 경향이 있다.The Ti / Fe / Ti clad plate produced as described above had an elongation of 32% and an excellent bond strength of 650 N / inch (measured by 'T' peel test). In addition, as a result of deep drawing with LDR (limiting draw ratio) 2.0, peeling or cracking did not occur and it was confirmed that the moldability was excellent. On the other hand, in the conventional bonding method, in the case of the clad, the temperature rises to around 1000 ° C., oxidation occurs, and the elongation is about 20%, and tends to be easily broken during deep drawing.

본 발명의 제조방법을 이용하면 티타늄/철합금 클래드재를 경제적이고 균질하게 제작할 수 있어 이 종류의 클래드재가 널리 응용될 수 있을 것이다.Using the manufacturing method of the present invention can be produced economically and homogeneously titanium / iron alloy clad material, this kind of clad material will be widely applied.

Claims (4)

티타늄/철합금/티타늄으로 구성되는 클래드 판재에서 디타늄과 철합금 사이에 중간재로서 알루미늄 또는 알루미늄 합금이 포함되어 있는 것을 특징으로 하는In a clad plate composed of titanium / iron alloy / titanium, aluminum or an aluminum alloy is included as an intermediate material between titanium and iron alloy. 티타늄/철합금/티타늄 클래드 판재.Titanium / Ferroalloy / Titanium Clad Plate. 제1항에 있어서, 중간재인 알루미늄 또는 알루미늄 합금의 두께는 0.01 - 1.0mm 인 티타늄/철합금/티타늄 클래드 판재.The titanium / iron alloy / titanium clad plate according to claim 1, wherein the intermediate material, aluminum or aluminum alloy, has a thickness of 0.01-1.0 mm. 철합금 판재와 티타늄 판재 사이에 알루미늄 또는 알루미늄합금 판재를 삽입하여 적층하고,Laminated by inserting aluminum or aluminum alloy plate between the iron alloy plate and the titanium plate, 상기 적층된 판재를 분위기 가스 없이 대기하에서 200-450℃의 범위에서 열간 압연하여 접합하고,The laminated plate is hot rolled and joined in the range of 200-450 ° C. under an atmosphere without an atmosphere gas, 접합된 판재를 250-450℃의 범위에서 삽입된 알루미늄을 확산처리하는 것을 포함하여 구성되는Configured to include diffusing the inserted aluminum into the bonded sheet material in the range of 250-450 ° C. 티타늄/철합금/티타늄 클래드 판재 제조방법.Titanium / Iron Alloy / Titanium Clad Plate Manufacturing Method. 철합금 판재의 표면에 용융도금으로 알루미늄 또는 알루미늄 합금을 코팅하고,Coating aluminum or aluminum alloy on the surface of the iron alloy sheet by hot-dip plating, 코팅된 철합금 판재의 표면에 티타늄 판재를 적층하고,Laminate the titanium sheet on the surface of the coated iron alloy sheet, 상기 적층된 판재를 분위기 가스 없이 대기하에서 200-450℃의 범위에서 열간 압연하여 접합하고,The laminated plate is hot rolled and joined in the range of 200-450 ° C. under an atmosphere without an atmosphere gas, 접합된 판재를 250-450℃의 범위에서 삽입된 알루미늄을 확산처리하는 것을 포함하여 구성되는Configured to include diffusing the inserted aluminum into the bonded sheet material in the range of 250-450 ° C. 티타늄/철합금/티타늄 클래드 판재 제조방법.Titanium / Iron Alloy / Titanium Clad Plate Manufacturing Method.
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KR100605388B1 (en) * 2004-09-20 2006-07-28 주식회사 한국클래드텍 Ti cladded sheet, and the manufacturing method of the same
KR101005805B1 (en) * 2008-09-04 2011-01-05 유재형 Method of manufacturing titanium-aluminum-stainless steel clad plate
WO2024085593A1 (en) * 2022-10-19 2024-04-25 한일프리머스 주식회사 Clad sheet using base sheet having thermally sprayed layer, and method for manufacturing same

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KR100710810B1 (en) 2005-05-04 2007-04-24 알메탈주식회사 Clad aluminium alloy pipe and brazing sheet thereof

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KR100288270B1 (en) * 1998-10-15 2001-05-02 정명식 Manufacturing method for multi-layered titanium-aluminide intermetallic compound sheet
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100605388B1 (en) * 2004-09-20 2006-07-28 주식회사 한국클래드텍 Ti cladded sheet, and the manufacturing method of the same
KR101005805B1 (en) * 2008-09-04 2011-01-05 유재형 Method of manufacturing titanium-aluminum-stainless steel clad plate
WO2024085593A1 (en) * 2022-10-19 2024-04-25 한일프리머스 주식회사 Clad sheet using base sheet having thermally sprayed layer, and method for manufacturing same

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