KR100587536B1 - Continuous Equal Channel Angular Pressing Method and Mold being used for the said method, and manufacturing apparatus with the above mold - Google Patents

Continuous Equal Channel Angular Pressing Method and Mold being used for the said method, and manufacturing apparatus with the above mold Download PDF

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KR100587536B1
KR100587536B1 KR1020040001316A KR20040001316A KR100587536B1 KR 100587536 B1 KR100587536 B1 KR 100587536B1 KR 1020040001316 A KR1020040001316 A KR 1020040001316A KR 20040001316 A KR20040001316 A KR 20040001316A KR 100587536 B1 KR100587536 B1 KR 100587536B1
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mold
metal material
ram
curvature
deformation
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KR20050073125A (en
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김형섭
서민홍
문병석
장영석
류원선
윤승채
정영기
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충남대학교산학협력단
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/48Treatment of water, waste water, or sewage with magnetic or electric fields
    • C02F1/481Treatment of water, waste water, or sewage with magnetic or electric fields using permanent magnets
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/48Devices for applying magnetic or electric fields
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/08Corrosion inhibition

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Abstract

본 발명은 선재/형재/각재/판재와 같이 단면적이나 단면형상이 전 길이에 걸쳐 거의 동일한 금속소재를 몰드 내에서 연속적으로 전단변형하여 금속조직 내의 결정립을 초미세화하고 기계적 성질을 개선하며 특히 공정자동화가 가능하게 한 연속 강구속전단변형방법과 상기 방법에서 사용되는 금형 및 상기 금형을 포함하는 금속소재 가공장치에 관한 것이다.The present invention continuously shears the metal material in the mold with the same cross-sectional area or cross-sectional shape over the entire length, such as wire / shape / square material / plate, to minimize the grain size in the metal structure and improve the mechanical properties, especially process automation. The present invention relates to a continuous steel confinement shear deformation method and a mold used in the method and a metal material processing apparatus including the mold.

본 발명에 따른 금형은 금속소재가 이동 가능하도록 임의의 각도로 교차한 2개의 채널을 갖되 상기 채널이 교차하는 교차부위의 내측 곡면 및 외측 곡면의 중심각과 반지름(곡률 반경)이 아래 조건을 만족하는 것을 특징으로 한다.The mold according to the present invention has two channels intersected at arbitrary angles so that the metal material can move, but the center angle and radius (curvature radius) of the inner and outer surfaces of the intersection where the channels intersect satisfy the following conditions. It is characterized by.

(조건)(Condition)

Ψinner = Φ (Φ: 채널의 교차각도, Ψinner: 내측 곡면의 곡률 중심(P)과 내측 곡면의 양 끝점 사이를 연결한 선분이 이루는 부채꼴의 중심각)Ψ inner = Φ (Φ: channel angle of intersection, Ψ inner : sector center angle formed by the line connecting the center of curvature (P) of the inner surface and the two ends of the inner surface)

0≤내측 곡면의 곡률 반경(R)≤채널 폭의 1/60≤ radius of curvature R of the inner surface ≤ 1/6 of the channel width

0≤ψouter≤ 22°(ψouter: 내측 곡면의 곡률 중심(P)과 외측 곡면의 양 끝점 사이를 연결한 선분이 이루는 부채꼴의 중심각)0≤ψ outer ≤ 22 ° (ψ outer : center angle of fan shape formed by the line connecting the center of curvature (P) of the inner surface and the two ends of the outer surface)

또한, 본 발명이 제공하는 금속소재 가공장치는 상기 금형의 입구와 출구에 금속소재를 가압하는 램이 각각 설치되고, 금형에 열을 가하는 발열수단이 추가로 설치된 것을 특징으로 한다.In addition, the metal material processing apparatus provided by the present invention is characterized in that the RAM for pressurizing the metal material at each of the inlet and the outlet of the mold is installed, the heating means for applying heat to the mold is further installed.

또한, 본 발명이 제안하는 연속 강구속전단변형방법은 금속소재와 동일한 단면형상을 가진 금형에 금속소재를 넣은 후 가압하는 강구속전단변형방법에 있어서 금속소재를 금형의 입구로 밀어넣는 금속소재 공급단계; 금속소재 공급단계에서 금형의 입구에 밀어넣은 금속소재를 램(상 램)으로 가압하여 금형의 출구로 강제 이송하는 1차변형단계; 상기 1차 변형단계에서 금형의 출구 쪽으로 강제 이송된 금속소재를 램(하 램)으로 가압하여 상기 금속소재를 금형의 입구 쪽으로 다시 이송하는 2차변형단계; 상기 1차변형단계와 2차변형단계를 반복하는 반복변형단계; 및 상기 반복변형단계의 완료 후 금속소재를 금형에서 빼내는 배출단계;를 포함한다.In addition, the continuous steel constant shear deformation method proposed by the present invention in the steel constant shear deformation method of pressing the metal material in the mold having the same cross-sectional shape as the metal material, the metal material supply to push the metal material to the inlet of the mold step; A primary deformation step of forcing the metal material pushed into the inlet of the mold in the metal material supply step with a ram (upper ram) and forcibly transporting it to the exit of the mold; A second deformation step of transferring the metal material to the inlet of the mold by pressing the metal material forcedly transferred toward the exit of the mold with a ram (ha ram) in the first deformation step; An iterative deformation step of repeating the first and second deformation steps; And a discharging step of removing the metal material from the mold after completion of the repeated deformation step.

강구속전단변형방법, 램, 금형, ECAP, 공정자동화, 연속공정Steel binding shear deformation method, ram, mold, ECAP, process automation, continuous process

Description

동일단면의 금속소재를 연속으로 전단변형하는 ECAP 공정용 금형과 상기 금형을 포함하는 금속소재 가공장치{Continuous Equal Channel Angular Pressing Method and Mold being used for the said method, and manufacturing apparatus with the above mold}Continuous Equal Channel Angular Pressing Method and Mold being used for the said method, and manufacturing apparatus with the above mold}

도 1은 종래 강구속전단변형방법의 작업공정도이다.1 is a working process diagram of a conventional steel binding shear deformation method.

도 2는 본 발명의 연속 강구속전단변형방법의 작업공정도이다.2 is a working process diagram of the continuous steel constant shear deformation method of the present invention.

도 3은 본 발명의 연속 강구속전단변형방법이 실시될 수 있는 금속소재 가공장치의 개략적인 구성도이다.3 is a schematic configuration diagram of a metal material processing apparatus in which the continuous steel constant shear deformation method of the present invention may be implemented.

도 4는 본 발명의 금속소재 가공장치에 채용되는 금형의 설계 개념도이다.4 is a conceptual design diagram of a mold employed in the metal material processing apparatus of the present invention.

본 발명은 선재/형재/각재/판재와 같이 단면적이나 단면 형상이 전 길이에 걸쳐 거의 동일한 금속소재를 몰드 내에서 연속적으로 전단변형하여 금속조직 내의 결정립을 초미세화 하고 기계적 성질을 개선하며 특히 공정자동화가 가능하게 한 연속 강구속전단변형방법과 상기 방법에서 사용되는 금형 및 상기 금형을 포함하는 금속소재 가공장치에 관한 것이다.The present invention continuously shears the metal material in the mold with the same cross-sectional area or cross-sectional shape over the entire length, such as wire / shape / square material / plate, to minimize the grain size in the metal structure and improve the mechanical properties, especially process automation. The present invention relates to a continuous steel confinement shear deformation method and a mold used in the method and a metal material processing apparatus including the mold.

강소성법의 일종인 ECAP(Equal Channel Angular Pressing : 등통로각압출법 또는 강구속전단변형법)공정은, 동일/유사한 형상의 입구/출구가 임의 각도로 교차된 금형에 금속소재를 통과시켜 상기 금속소재에 큰 소성변형(전단변형)을 부여하는 공정으로서, 상기 방법에 따르면 금속소재 내의 결정립이 미세화되고 기계적 성질이 개선된다.(참고문헌 : US Patent No.5,513,512)The ECAP (Equal Channel Angular Pressing) method, which is a kind of rigid plastic method, uses a metal material to pass through a metal material through a metal mold having an inlet / outlet of the same / similar shape intersected at an arbitrary angle. As a process for imparting large plastic deformation (shear deformation) to a material, according to the above method, crystal grains in a metal material are refined and mechanical properties are improved. (Reference: US Patent No. 5,513,512)

그러나, 상기한 강구속전단변형방법(ECAP)은 변형률이 최대가 되는 90°각도로 연결된 "L"자형 채널(금형 내 이동통로)을 사용하므로, 금속소재의 압출과정에서 채널 벽면과의 마찰에 의해 상기 금속소재가 원활하게 유동되지 못하는 단점이 있다. 즉, 압출과정에서 상기 금속소재가 채널의 내측면을 따라서는 쉽게 변형되는 반면, 바깥면을 따라서는 변형이 잘 되지 않기 때문에 국부적으로 변형률에 차이가 생기고 이로 인해 금속소재의 강도와 결정립의 크기 등이 일정치 못한 문제가 있었던 것이다(금속학회지 제37권 4호 1999년 p441-447 참조)However, the above-described steel binding shear deformation method (ECAP) uses an "L" shaped channel (moving passage in the mold) connected at an angle of 90 ° to maximize the strain, so that the friction with the channel wall during the extrusion process of the metal material. As a result, the metal material does not flow smoothly. That is, during the extrusion process, the metal material is easily deformed along the inner surface of the channel, but since the deformation is not well along the outer surface, there is a difference in local strain, which causes the strength of the metal material and the grain size. There was this inconsistent problem (see Korean Journal of Metals, Vol. 37 No. 4, 1999, p441-447).

이러한 문제점을 개선하고 동시에 금속소재에 높은 전단변형을 부여하기 위해, 종래에는 도 1에 도시한 바와 같이 금속소재의 가공 시 ECAP 공정을 최소 4차례 이상 실시하였는데 이 경우 이전의 압출과정에서 높은 온도로 가열된 금속소재가 다음번 압출과정에 제공되기 전 공기와 접촉하여 표면에 산화 피막이 형성되는 문제가 있었다.In order to improve this problem and at the same time give high shear deformation to the metal material, as shown in FIG. 1, at least four times the ECAP process was performed during the processing of the metal material. There was a problem that an oxide film is formed on the surface by contact with air before the heated metal material is provided in the next extrusion process.

한편, 종래의 ECAP공정에서는 전단변형이 이루어진 금속소재의 전면부 중간 부분이 돌출되기 때문에 다음번 압출작업을 위해 이 부분을 제거해야 하는 번거로움이 있었다. 이로 인해 현재까지 ECAP공정의 완전자동화가 이루어지지 않고 있다.On the other hand, in the conventional ECAP process because the front portion of the front portion of the metal material is shear deformation is protruding there was a need to remove this portion for the next extrusion operation. As a result, the ECAP process has not been fully automated until now.

본 발명은 이러한 종래의 문제점을 개선하기 위해 안출된 것으로서 단속(斷續)적으로 시행되던 종래의 ECAP공정을 연속화 하여, 금속소재의 기계적 성질이 더욱 더 개선되도록 함과 동시에, 금속소재 내부의 결정립이 종래보다 더 미세해지게 한 연속 강구속전단변형방법을 제공하는데 목적이 있다.The present invention has been made to improve such a conventional problem by continually continuing the conventional ECAP process was carried out intermittently, the mechanical properties of the metal material is further improved, and at the same time, grains inside the metal material It is an object of the present invention to provide a continuous steel binding shear deformation method which is made finer than that of the prior art.

따라서, 본 발명의 금속가공방법에 따르면, 가공시간이 짧아져 생산성이 향상되며 작업설비의 완전자동화가 가능하므로 공정변수의 조절이 용이하다.
Therefore, according to the metal working method of the present invention, the processing time is shortened, the productivity is improved, and it is possible to fully control the work equipment, thereby easily adjusting the process parameters.

앞에서 살펴본 바와 같이, 현재 시행되고 있는 ECAP공정은 심한 전단변형을 금속소재에 부여하여 결정립을 미세화하고 기계적 성질을 개질하는 공정이다. (US Patent No.5,513,512) ECAP공정에서는 변형 전후의 단면형상이 동일하며, 반복해서 시행할 경우 1 이상의 전단변형을 균일하게 부여할 수 있다. 하지만, 작업이 단속적으로 이루어지기 때문에 가공시간 또는 제조시간이 길어 생산성이 저하된다.As described above, the ECAP process, which is currently in place, is a process to refine grains and modify mechanical properties by applying severe shear deformation to metal materials. (US Patent No. 5,513, 512) In the ECAP process, the cross-sectional shape before and after deformation is the same, and when repeatedly applied, one or more shear deformations can be uniformly provided. However, since the work is intermittently performed, the processing time or the manufacturing time is long, and the productivity is lowered.

또한, ECAP공정에서는 전단변형 후 탄성 회복에 의해 금속소재가 길이방향으로 약간 휘어지기 때문에 작업을 반복하려면 금속소재의 표면을 연마해야 한다. 이러한 단점을 개선하기 위해 입구통로보다 출구통로가 작은 금형을 가끔 사용하기도 하지만, 이 경우 금속소재가 변형되는 동안 단면형상이 변하기 때문에 부하가 증가 된다.In addition, in the ECAP process, the metal material is slightly bent in the longitudinal direction by elastic recovery after shear deformation, so the surface of the metal material must be polished to repeat the operation. In order to alleviate this drawback, a mold with a smaller exit passage is sometimes used, but in this case, the load is increased because the cross-sectional shape changes while the metal material is deformed.

따라서, 이러한 문제점을 해결하고자 하는 본 발명은, ⒜ 금속소재와 동일한 단면형상을 가진 금형에 상기 금속소재를 넣은 후 가압하는 강구속전단변형방법에 있어서, 금속소재를 금형의 입구로 밀어넣는 금속소재 공급단계; 상기 금속소재 공급단계에서 금형의 입구로 밀어 넣어진 금속소재를 램(상램)으로 가압하여 상기 금형의 출구로 강제 이송하는 1차변형단계; 상기 1차 변형단계에서 금형의 출구로 강제 이송된 금속소재의 배후를 램(하램)으로 가압하여 상기 금형의 입구로 강제 이송하는 2차변형단계; 상기 1차변형단계와 2차변형단계를 반복해서 적용하는 반복변형단계; 및 상기 반복변형단계의 완료 후 금속소재를 금형으로부터 빼내는 배출단계;를 포함한다.Therefore, the present invention is to solve this problem, in the metal bond shear deformation method of pressing the metal material in the mold having the same cross-sectional shape as the metal material, the metal material for pushing the metal material to the inlet of the mold Feeding step; A primary deformation step of forcing the metal material pushed into the inlet of the mold in the metal material supplying step with a ram (upper ram) and forcibly transporting it to the outlet of the mold; A secondary deformation step of forcibly conveying the rear of the metal material forcedly transferred to the exit of the mold to the inlet of the mold by pressing the ram with the ram; An iterative deformation step of repeatedly applying the primary deformation step and the secondary deformation step; And a discharging step of removing the metal material from the mold after completion of the repeated deformation step.

⒝ 한편, 상술한 본 발명의 연속 강구속전단변형방법에 사용되는 금형은 도 4에 도시된 바와 같이, 금속소재가 이동 가능하도록 임의의 각도로 교차한 2개의 채널을 갖되 상기 채널이 교차하는 교차부위의 내측 곡면 및 외측 곡면의 중심각과 반지름(곡률 반경)이 아래 조건을 만족하는 것을 특징으로 한다.
(조건)
Ψinner = Φ (Φ: 채널의 교차각도, Ψinner: 내측 곡면의 곡률 중심(P)과 내측 곡면의 양 끝점 사이를 연결한 선분이 이루는 부채꼴의 중심각)
0≤내측 곡면의 곡률 반경(R)≤채널 폭의 1/6
0≤ψouter≤ 22°(ψouter: 내측 곡면의 곡률 중심(P)과 외측 곡면의 양 끝점 사이를 연결한 선분이 이루는 부채꼴의 중심각)
금형 Meanwhile, as shown in FIG. 4, the metal mold used in the continuous steel binding shear deformation method according to the present invention has two channels intersected at an arbitrary angle so that the metal material is movable, but the channels intersect each other. The center angle and radius (radius of curvature) of the inner and outer surfaces of the site satisfy the following conditions.
(Condition)
Ψ inner = Φ (Φ: channel angle of intersection, Ψ inner : sector center angle formed by the line connecting the center of curvature (P) of the inner surface and the two ends of the inner surface)
0≤ radius of curvature R of the inner surface ≤ 1/6 of the channel width
0≤ψ outer ≤ 22 ° (ψ outer : center angle of fan shape formed by the line connecting the center of curvature (P) of the inner surface and the two ends of the outer surface)

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⒞ 또한, 본 발명의 금속소재 가공장치는 상기 금형의 입구/출구에 금속소재를 가압하는 램(상 램과 하 램)이 각각 설치되고 상기 금형에 열을 가하는 발열수단이 설치된 것을 특징으로 한다.⒞ In addition, the metal material processing apparatus of the present invention is characterized in that the ram (upper ram and lower ram) pressurizing the metal material at the inlet / outlet of the mold are respectively installed, and the heating means for applying heat to the mold.

이상과 같이 구성되는 본 발명에 따르면, 금형 내에서 연속적으로 전단변형이 이루어지기 때문에 작업이 종료되기 전까지는 상기 금형으로부터 금속소재를 빼낼 필요가 없다.According to the present invention configured as described above, since the shear deformation is continuously made in the mold, it is not necessary to remove the metal material from the mold until the operation is completed.

또한, 작업공정의 자동화가 가능하고 공정변수(작업회수, 변형속도, 변형량, 가공온도 등등)의 조절이 용이하므로 작업의 효율성을 높일 수 있으며, 제조시간의 단축을 통해 생산성이 향상되어 상업적인 생산체제 도입에 유리하다.In addition, the automation of the work process is possible and the process variables (work count, strain rate, strain amount, processing temperature, etc.) can be easily adjusted to increase the efficiency of the work. It is advantageous for introduction.

이하, 첨부된 도면을 참조하여 본 발명의 일 실시예에 따른 연속 강구속전단변형방법 및 이에 사용되는 금형과 상기 금형을 포함하는 금속소재 가공장치에 대해 설명한다.Hereinafter, with reference to the accompanying drawings will be described a continuous steel binding shear deformation method according to an embodiment of the present invention and a metal material processing apparatus including the mold and the mold used therein.

실시예Example

㈎ 장치구성구성 Device configuration

도 3은 본 발명의 연속 강구속전단변형방법이 실시될 수 있는 금속소재 가공장치의 개략적인 구성도이며, 도 4는 상기 금속소재 가공장치에 채용되는 ECAP금형의 설계 개념도이다.Figure 3 is a schematic configuration diagram of a metal material processing apparatus that can be implemented the continuous steel constant shear deformation method of the present invention, Figure 4 is a conceptual view of the design of the ECAP mold employed in the metal material processing apparatus.

도면에서 보듯이, 본 발명에서는 ECAP공정의 연속적인 실시를 위해 금형의 입구 쪽과 출구 쪽에 각각 상 램/하 램을 설치하였는데, 상기 상 램/하 램은 유압실린더의 신축작용에 연동하여 상기 금형의 "L"자형 채널 안으로 들어가거나 상기 채널에서 빠져나오게 된다.As shown in the figure, in the present invention, the upper ram / lower ram was installed on the inlet side and the outlet side of the mold for the continuous implementation of the ECAP process, the upper ram / lower ram is linked to the expansion and contraction of the hydraulic cylinder of the mold Into or out of the "L" shaped channel.

또한, 상기 금형의 둘레에는 발열체(발열수단)가 설치되어 있다.In addition, a heating element (heating means) is provided around the mold.

여기서, 상기 발열체와 유압실린더는 본 발명의 금속소재 가공장치에 마련되어 있는 자동화 조절판에 의해서 작동시기와 발열량 또는 공정회수(작업회수)가 설정된다.Here, the heating element and the hydraulic cylinder is set by the automatic control plate provided in the metal material processing apparatus of the present invention, the operating time and the amount of heat or the number of processes (working frequency) is set.

금형에서 "L"자형 채널의 내측 코너와 외측 코너는 금속소재가 원활히 유동하면서도 큰 전단변형이 가능하도록 곡면처리를 하되 다음의 조건을 만족하도록 가공한다.
(조건)
Ψinner = Φ (Φ: 채널의 교차각도, Ψinner: 내측 곡면의 곡률 중심(P)과 내측 곡면의 양 끝점 사이를 연결한 선분이 이루는 부채꼴의 중심각)
0≤내측 곡면의 곡률 반경(R)≤채널 폭의 1/6
The inner and outer corners of the "L" shaped channel in the mold are processed to satisfy the following conditions while smoothly flowing metal materials while allowing for large shear deformation.
(Condition)
Ψ inner = Φ (Φ: channel angle of intersection, Ψ inner : sector center angle formed by the line connecting the center of curvature (P) of the inner surface and the two ends of the inner surface)
0≤ radius of curvature R of the inner surface ≤ 1/6 of the channel width

0≤ψouter≤ 22°(ψouter: 내측 곡면의 곡률 중심(P)과 외측 곡면의 양 끝점 사이를 연결한 선분이 이루는 부채꼴의 중심각)0≤ψ outer ≤ 22 ° (ψ outer : center angle of fan shape formed by the line connecting the center of curvature (P) of the inner surface and the two ends of the outer surface)

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㈏ 작업공정㈏ Work process

첨부된 도 2는 본 발명에 따른 연속 강구속전단변형방법의 작업공정도이다.2 is a working process diagram of the continuous steel binding shear deformation method according to the present invention.

작업은, 금속소재의 장입 및 작업조건 설정→금형 내에서의 연속적인 전단변형→배출의 순서로 이루어진다.The work is carried out in the order of charging the metal material and setting the working conditions → continuous shear deformation in the mold → discharge.

1 cycle은 금형의 입구쪽에 설치한 상램이 금속소재를 출구쪽으로 밀어내는 1단계와, 금형의 출구쪽에 설치한 하램이 금속소재를 다시 입구쪽으로 밀어올리는 2단계로 이루어진다. 따라서, 1 cycle 당 2번의 전단변형이 금속소재에 부여된다.One cycle consists of a first step in which the upper ram installed in the inlet of the mold pushes the metal material toward the exit, and a second step in which the harem installed in the exit of the mold pushes the metal material back to the entrance. Therefore, two shear deformations are given to the metal material per cycle.

한편, 금속소재의 압출 시에는, 금속소재와 채널 사이의 마찰을 완화시키는 흑연 등의 무기계 윤활제를 사용하는 것이 좋다.On the other hand, when extruding a metal material, it is preferable to use an inorganic lubricant such as graphite to alleviate the friction between the metal material and the channel.

이와 같이 하여 상기 금속소재에 충분한 전단변형이 주어졌으면 작업을 종료하고 금형에서 빼내게 된다.In this way, if sufficient shear deformation is given to the metal material, the work is terminated and removed from the mold.

이상과 같이, 본 발명에 따르면 금속소재를 장입한 후 작업종료 시까지 종래 ECAP공정을 연속해서 적용할 수 있기 때문에 금속소재의 가공시간을 대폭으로 단축할 수 있다.As described above, according to the present invention, since the conventional ECAP process can be continuously applied until the end of work after charging the metal material, the processing time of the metal material can be significantly shortened.

또한, 금형 내에서 완전히 전단변형시킨 후에 금속소재를 빼내므로 작업 중에는 공기와 접촉하는 일이 없어 산화피막제거를 위한 추가공정이 필요치 않으며, 거의 이론에 가까운 기계적 성질을 얻을 수 있게 된다.In addition, since the metal material is removed after the complete shear deformation in the mold, it does not come into contact with air during the operation, so that an additional process for removing the oxide film is not necessary, and almost a theoretical mechanical property can be obtained.

또한, 작업조건 등을 자동화 조절판에서 설정할 수 있으므로 공정자동화를 달성할 수 있으며, 이로부터 상업적인 생산체제를 구축하기에 유리한 이점이 있다.In addition, since the operating conditions can be set in the automated control panel, process automation can be achieved, and there is an advantageous advantage to build a commercial production system.

Claims (3)

금속소재가 이동 가능하도록 임의의 각도로 교차한 2개의 채널을 갖되 상기 채널이 교차하는 교차부위의 내측 곡면 및 외측 곡면의 중심각과 반지름(곡률 반경)이 아래 조건을 만족하는 것을 특징으로 하는 동일 단면의 금속소재를 연속으로 전단변형시키는 ECAP 공정용 금형.The same cross-section is characterized by having two channels intersected at an arbitrary angle so that the metal material can move, and the center angle and radius (radius of curvature) of the inner and outer surfaces of the intersection where the channels cross each other satisfy the following conditions. Mold for ECAP process that shear deformation of metal materials (조건)(Condition) Ψinner = Φ (Φ: 채널의 교차각도, Ψinner: 내측 곡면의 곡률 중심(P)과 내측 곡면의 양 끝점 사이를 연결한 선분이 이루는 부채꼴의 중심각)Ψ inner = Φ (Φ: channel angle of intersection, Ψ inner : sector center angle formed by the line connecting the center of curvature (P) of the inner surface and the two ends of the inner surface) 0≤내측 곡면의 곡률 반경(R)≤채널 폭의 1/60≤ radius of curvature R of the inner surface ≤ 1/6 of the channel width 0≤ψouter≤ 22°(ψouter: 내측 곡면의 곡률 중심(P)과 외측 곡면의 양 끝점 사이를 연결한 선분이 이루는 부채꼴의 중심각)0≤ψ outer ≤ 22 ° (ψ outer : center angle of fan shape formed by the line connecting the center of curvature (P) of the inner surface and the two ends of the outer surface) 제 1항에 기재된 ECAP공정용 금형의 입구/출구에 금속소재를 가압하는 램이 각각 설치되고 상기 금형에 열을 가하는 발열수단이 추가로 설치된 것을 특징으로 하는 동일단면의 금속 소재를 연속으로 전단변형하는 금속소재 가공장치.The inlet / outlet of the ECAP process die according to claim 1 is provided with a ram for pressurizing the metal material, respectively, and heat generating means for applying heat to the mold is further provided. Metal processing equipment. 삭제delete
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