KR20090006086U - Simulator device in heat treatment for observing and controlling steel structure - Google Patents

Simulator device in heat treatment for observing and controlling steel structure Download PDF

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KR20090006086U
KR20090006086U KR2020070020173U KR20070020173U KR20090006086U KR 20090006086 U KR20090006086 U KR 20090006086U KR 2020070020173 U KR2020070020173 U KR 2020070020173U KR 20070020173 U KR20070020173 U KR 20070020173U KR 20090006086 U KR20090006086 U KR 20090006086U
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heat treatment
treatment furnace
specimen
nitrogen gas
temperature
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황인석
문만빈
나상묵
남궁성
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현대하이스코 주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00—Thermometers specially adapted for specific purposes
    • G01K13/12—Thermometers specially adapted for specific purposes combined with sampling devices for measuring temperatures of samples of materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/42—Low-temperature sample treatment, e.g. cryofixation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/44—Sample treatment involving radiation, e.g. heat
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/20—Metals
    • G01N33/208—Coatings, e.g. platings

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Abstract

본 고안은 광학현미경의 시편지지대에 온도제어장치 및 냉각장치가 장착된 소형의 열처리로를 장착하여 박판형태의 금속시편의 열처리 모사가 가능하며 열처리시에 조직변화관찰이 용이한 열처리모사장치에 관한 것이다.  The present invention is equipped with a small heat treatment furnace equipped with a temperature control device and a cooling device on a specimen support of an optical microscope, which enables heat treatment simulation of thin metal specimens, and provides an easy heat treatment simulation apparatus. will be.

1.열처리 모사장치 2. 냉연강판의 열처리 사이클 1. Heat treatment simulator 2. Heat treatment cycle of cold rolled steel

Description

조직관찰용 열처리 모사장치{Simulator device in heat treatment for observing and controlling steel structure}Simulator device in heat treatment for observing and controlling steel structure}

본 고안은 냉각장치 및 온도제어장치를 장착한 소형의 열처리로를 광학현미경과 연계시켜 판형태의 시편의 열처리 시뮬레이션이 가능하며 열처리중에 조직변화관찰이 용이하도록 한 열처리모사 장치에 관한 것이다.The present invention relates to a heat treatment simulation apparatus which enables heat treatment simulation of plate-shaped specimens by linking a small heat treatment furnace equipped with a cooling device and a temperature control device with an optical microscope, and makes it easy to observe tissue changes during heat treatment.

최근 차량경량화의 요구에 따라 자동차의 내,외판재로 고장력 강판을 적용하는 비율이 증가하고 있으며 이에 따라 다양한 합금설계 및 열처리 사이클 변화를 통해 미세조직을 조절하는 연구가 활발히 이뤄지고 있다. Recently, the ratio of applying high-strength steel sheet to the interior and exterior panels of automobiles is increasing according to the demand of vehicle weight reduction. Accordingly, researches to control the microstructure through various alloy designs and heat treatment cycles have been actively conducted.

한편 이러한 합금설계 연구에서는 열처리 모사장치가 유용하게 사용되고 있으며 열처리 모사장치는 일반적으로 열처리로에 가열장치 및 냉각장치가 장착되어 있고 가열과 냉각을 제어하는 장치로 구성된다. 또한 열처리시에는 산화를 막기 위해 질소분위기를 유지하게 되며 이를 위해 기계식 펌프와 가스 입,출입구가 열처리로에 연결하고 열처리조건을 제어한다.On the other hand, in this study of alloy design, the heat treatment simulator is usefully used, and the heat treatment simulator is generally equipped with a heating device and a cooling device in a heat treatment furnace, and is composed of a device for controlling heating and cooling. In addition, during heat treatment, nitrogen atmosphere is maintained to prevent oxidation. For this purpose, a mechanical pump and a gas inlet / outlet are connected to the heat treatment furnace to control the heat treatment conditions.

그런데 여기에서 열처리후 관찰해야 할 열처리 시편의 크기는 분석할 항목에 따라 차이가 있으나 통상 인장시험과 조직관찰 등의 실험을 위해서 가로, 세로의 길이가 300mm 정도 크기로 사용된다.By the way, the size of the heat treatment specimen to be observed after the heat treatment is different depending on the item to be analyzed, but the length of the horizontal and vertical length is usually about 300mm for the experiment of tensile test and tissue observation.

그러나 이러한 기존의 열처리 모사 장치의 경우, 이와 같이 열처리로의 사이즈가 크기 때문에 가열장치 및 냉각장치의 용량 또한 크며 조직변화 관찰을 실시간으로 하는 것은 불가능한 실정이다.However, in the case of such a conventional heat treatment simulator, since the size of the heat treatment furnace is large, the capacity of the heating device and the cooling device is also large, and it is impossible to observe the tissue change in real time.

본 고안은 상술한 문제점을 해결하기 위해 열처리로를 파일롯트 설비로 소형화하고 광학현미경의 시편지지대와 대물렌즈 사이에 장착하여 실시간으로 열처리에 따른 조직변화를 관찰할 수 있도록 한 데에 목적이 있다.The object of the present invention is to miniaturize the heat treatment furnace with a pilot facility in order to solve the above-mentioned problems, and to be installed between the specimen support of the optical microscope and the objective lens so as to observe the texture change due to heat treatment in real time.

본 고안은 용융아연도금강판의 열처리 작업시의 강조직 관찰을 위한 열처리 모사장치는 광학현미경의 대물렌즈와 시편지지대 사이에 소형 열처리로를 장착하고, 이 열처리로에는 열처리시의 시편가열에 따른 산화를 막기 위해 열처리로를 저진공 상태로 할 수 있도록 열처리로에 진공펌프를 연결하고, 또한 시편온도측정을 위해 시편을 열전대와 용접하고 온도제어기에 용접하며, 또한 이 온도제어기에서 온도제어를 위해 열처리로의 가열장치를 온도제어기에 연결하며, 상기 시편을 냉각시키기 위해 불활성가스로서 질소가스를 주입한 질소가스 용기를 상기 열처리로에 연결하며, 이 질소가스 용기에 부착된 밸브(V)를 이용하여 질소가스를 상기 가열장치에 분사시켜 온도를 낮추어 열처리로의 온도조절을 하면서 시편의 윗쪽 대물렌즈를 통해서 조직변화를 실시간으로 관찰할 수 있도록 한 것을 특징으로 하는 열처리 모사장치에 의하여 달성된다.The present invention has a small heat treatment furnace for the observation of stressed steel during the heat treatment of hot-dip galvanized steel sheet. A small heat treatment furnace is installed between the objective lens of the optical microscope and the specimen support. A vacuum pump is connected to the heat treatment furnace so that the heat treatment furnace can be kept in a low vacuum state, and the specimen is welded with a thermocouple for welding the temperature of the specimen, and the temperature controller is used. A furnace heating device is connected to a temperature controller, and a nitrogen gas container in which nitrogen gas is injected as an inert gas to cool the specimen is connected to the heat treatment furnace, and a valve (V) attached to the nitrogen gas container is used. Nitrogen gas is injected into the heating device to lower the temperature to adjust the temperature of the heat treatment furnace through the upper objective lens of the specimen. That one to observe the change in real-time is achieved by the heat treatment simulating apparatus according to claim.

본 고안에 의해 광학현미경과 열처리 온도 제어장치와 열처리로가 일체로 회로 등으로 연결되어 박판형태의 금속시편의 열처리 모사가 가능하게 됨으로써 열처리에 의한 강조직 변화관찰이 용이하게 되어 일층 열처리온도, 가열/냉각속도 제어 등이 정확하게 제어 가능하게 되는 획기적인 효과가 있다.The optical microscope, the heat treatment temperature control device, and the heat treatment furnace are integrally connected to each other by a circuit, and thus the heat treatment simulation of the thin metal sheet is facilitated. There is a significant effect that the cooling speed control can be accurately controlled.

첨부된 도면에 의거하여 본 고안의 구성을 일실시예로서 아래에 설명한다.On the basis of the accompanying drawings will be described below as an embodiment the configuration of the subject innovation.

도 1은 본발명 열처리 모사장치의 개념도이다.1 is a conceptual diagram of the heat treatment simulation apparatus of the present invention.

도 1은 열처리 모사장치의 구성을 나타내는 것으로 광학현미경의 대물렌즈(2)와 시편지지대(1) 사이에 소형의 열처리로(3)가 장착되어 있고, 이 열처리로(3)에는 각종 냉각장치 및 가스배관(10)(9) 그리고 온도제어 장치(4)가 연결되어 있다. 열처리로(3)에는 저진공으로 만들기 위한 진공펌프(6)가 연결되어있으며 시편의 산화방지 및 시편의 가열 후 냉각을 위해 불활성 가스인 질소를 투입하기 위한 가스 입, 출입구 그리고 열처리로의 냉각을 위한 냉각수 배관(9)이 연결되어 있다. 또한 열처리 사이클을 수행하기 위해 온도제어 장치(4)가 함께 연결되어 있다.Fig. 1 shows the configuration of a heat treatment simulation apparatus in which a small heat treatment furnace 3 is mounted between an objective microscope 2 and a specimen support 1 of an optical microscope. The heat treatment furnace 3 includes various cooling apparatuses and Gas pipes 10 and 9 and a temperature control device 4 are connected. A vacuum pump 6 is connected to the heat treatment furnace 3 to make the vacuum low, and the gas inlet, the inlet and the heat treatment of the inlet nitrogen for injecting nitrogen to prevent oxidation of the specimen and to cool the specimen after heating. Cooling water pipe 9 is connected. In addition, the temperature control device 4 is connected together to perform the heat treatment cycle.

도 2는 도 1에서의 열처리로와 온도제어기의 연결관계도이다.2 is a diagram illustrating a connection relationship between a heat treatment furnace and a temperature controller of FIG. 1.

강조직 관찰용 대물렌즈가 장착된 열처리로에서의 시편 가열시에 산화를 막기 위해 진공펌프(6)가 열처리로(3)에 연결되어 있으며 시편의 온도를 측정하기 위해 시편을 열전대(도시안됨)와 용접하고 온도 제어기(4)에 연결한다. 온도제어는 가열장치(31)를 이용하며 가열장치(31) 또한 온도제어기(4)에 직접 연결된다. 냉각은 질소가스(N2gas)를 이용하며 질소가스 용기(5)에 부착된 밸브(V)를 이용하여 질소가스(N2gas)를 분사하여 온도를 낮추게 한다. A vacuum pump (6) is connected to the heat treatment furnace (3) to prevent oxidation during the heating of the specimen in a heat treatment furnace equipped with an objective lens for emphasis observation, and the thermocouple (not shown) to measure the temperature of the specimen. And are connected to the temperature controller (4). The temperature control uses a heating device 31 and the heating device 31 is also directly connected to the temperature controller 4. Cooling uses nitrogen gas (N 2 gas) and lowers the temperature by injecting nitrogen gas (N 2 gas) using the valve (V) attached to the nitrogen gas container (5).

위와 같이 열처리로의 온도조절을 하면서 시편(1)의 위쪽의 대물렌즈(2)를 통해서 조직변화를 실시간으로 관찰하게 된다. As described above, the tissue change is observed in real time through the objective lens 2 on the upper side of the specimen 1 while controlling the temperature of the heat treatment furnace.

여기에서, 열처리 모사장치는 실제작업조건과 비교되어 조건제어 가능하도록 하기 위해 열처리 사이클을 그속에 데이터 입력하여 피드백시킬 수 있다.Here, the heat treatment simulated value may be fed back by inputting a heat treatment cycle therein in order to be able to control the condition compared to actual working conditions.

도 3은 용융아연도금강판의 일반적인 열처리 사이클을 일례로 나타낸 것이다. 열처리 공정은 가열, 소둔, 냉각, 도금, 재열처리, 최종냉각 순으로 진행된다.3 shows an example of a general heat treatment cycle of a hot dip galvanized steel sheet. The heat treatment process is followed by heating, annealing, cooling, plating, reheating, and final cooling.

본 고안은 예컨대 도 3과 같은 열처리 사이클을 미리 설정하고, 이에 따라 실제 열처리 작업조건과 비교되어 제어 가능하도록 한다. 즉, 본 고안상의 열처리 모사 장치가 이에 맞추어 시뮬레이션 가능하도록 온도제어장치에 열처리 조건 즉 온도와 시간을 열처리 사이클에 따라 순서대로 설정하고 열처리로를 저진공 상태로 만든 후 질소가스 분위기에서 열처리를 실시하면서 열처리중에 광학현미경을 통해서 조직변화를 관찰하게 되는 것이다. The present invention sets, for example, a heat treatment cycle as shown in FIG. 3 in advance, and thus can be compared with the actual heat treatment working conditions so as to be controllable. That is, the heat treatment simulation apparatus according to the present invention sets the heat treatment conditions, that is, the temperature and time in order according to the heat treatment cycle, in order to be able to simulate accordingly, and makes the heat treatment furnace in a low vacuum state, and then performs heat treatment in a nitrogen gas atmosphere. During the heat treatment, tissue changes were observed through an optical microscope.

도 1은 열처리 모사장치의 구성도1 is a block diagram of a heat treatment simulation apparatus

도 2는 용융아연도금강판의 열처리 사이클을 나타낸 설명도2 is an explanatory diagram showing a heat treatment cycle of a hot-dip galvanized steel sheet

Claims (1)

용융아연도금강판의 열처리 작업시의 강조직 관찰을 위한 열처리 모사장치는 광학현미경의 대물렌즈(2)와 시편지지대(1) 사이에 소형 열처리로(3)를 장착하고,The heat treatment simplicity for the observation of the stressed line during the heat treatment of the hot-dip galvanized steel sheet is equipped with a small heat treatment furnace (3) between the objective lens (2) and the specimen support (1) of the optical microscope, 이 열처리로(3)에는 열처리시의 시편가열에 따른 산화를 막기 위해 열처리로를 저진공 상태로 할 수 있도록 열처리로에 진공펌프(6)를 연결하고, 또한 시편온도측정을 위해 시편을 열전대와 용접하고 온도제어기(4)에 용접하며, 또한 이 온도제어기에서 온도제어를 위해 열처리로의 가열장치(31)를 온도제어기(4)에 연결하며,In this heat treatment furnace (3), a vacuum pump (6) is connected to the heat treatment furnace so that the heat treatment furnace is in a low vacuum state in order to prevent oxidation due to the heating of the specimen during heat treatment. Welding and welding to the temperature controller 4, and also connecting the heating device 31 of the heat treatment furnace to the temperature controller 4 for temperature control in this temperature controller, 상기 시편을 냉각시키기 위해 불활성가스로서 질소가스를 주입한 질소가스 용기(5)를 상기 열처리로에 연결하며, 이 질소가스 용기에 부착된 밸브(V)를 이용하여 질소가스를 상기 가열장치에 분사시켜 온도를 낮추어 열처리로의 온도조절을 하면서 시편의 윗쪽 대물렌즈를 통해서 조직변화를 실시간으로 관찰할 수 있도록 한 것을 특징으로 하는 열처리 모사장치.A nitrogen gas container 5 into which nitrogen gas is injected as an inert gas to cool the specimen is connected to the heat treatment furnace, and nitrogen gas is injected into the heating apparatus using a valve V attached to the nitrogen gas container. By lowering the temperature by controlling the temperature of the heat treatment furnace heat treatment simulation device characterized in that to observe in real time the tissue changes through the objective lens on the specimen.
KR2020070020173U 2007-12-17 2007-12-17 Simulator device in heat treatment for observing and controlling steel structure KR20090006086U (en)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN108170897A (en) * 2017-12-05 2018-06-15 沈阳东博热工科技有限公司 A kind of structural optimization method of vacuum heat treatment furnace heater

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CN108170897A (en) * 2017-12-05 2018-06-15 沈阳东博热工科技有限公司 A kind of structural optimization method of vacuum heat treatment furnace heater

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