KR20150065419A - heat treatment vacuum furnace - Google Patents

heat treatment vacuum furnace Download PDF

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KR20150065419A
KR20150065419A KR1020130150715A KR20130150715A KR20150065419A KR 20150065419 A KR20150065419 A KR 20150065419A KR 1020130150715 A KR1020130150715 A KR 1020130150715A KR 20130150715 A KR20130150715 A KR 20130150715A KR 20150065419 A KR20150065419 A KR 20150065419A
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South Korea
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housing
heating chamber
heat treatment
heat
heating
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KR1020130150715A
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Korean (ko)
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KR101852113B1 (en
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박상만
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박상만
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
    • F27D2007/066—Vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/007—Cooling of charges therein
    • F27D2009/0089—Quenching
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)

Abstract

The present invention relates to a heat treatment vacuum furnace used for a heat treatment method of changing the properties of metal via change of crystals inside the metal by heating the metal inputted into a heating chamber at proper temperature and cooling the metal. The present invention comprises: a plurality of heat insulation plates (32) having identical standards arranged on an inner wall surface of the heating housing (31) of the heating chamber (30) of the heat treatment vacuum furnace (10), and are fixated by a coupling means; a sealing piece (33) combined with a border position in contact with an end part of each of the heat insulation plates (32) by a coupling bolt (B); a venthole (34) installed in a rear sealing plate (31a) of the heating housing (31); and a heat exchanger (40) installed in series with the heating chamber (30) behind the heating chamber (30), wherein the heat exchanger (40) connects to a medium circulation device (F) for refrigeration installed outside a vacuum housing (20), to circulate a medium for refrigeration to the circulation pipe (42) of the heat exchanger (40). The present invention has excellent heat treatment efficiency as an inner pressure inside the vacuum housing can be raised above a certain level. Moreover, costs for maintenance and repair can be reduced and foreign materials (melt) generated on the heat insulation plates by high temperature during heat treatment process are prevented from being deposited on the metal under heat treatment by enabling partial replacement and repair of the heat insulation plates.

Description

진공 열처리로{heat treatment vacuum furnace}A heat treatment vacuum furnace

본 발명은 진공 열처리로에 관한 발명으로, 좀더 상세하게는 가열 챔버에 투입한 금속을 적의의 온도로 가열한 후 냉각함으로써 금속 내부의 결정 변화로 금속의 특성을 변위시키는 열처리 방법에 사용하는 진공 열처리로를 제공하기 위한 것이다.The present invention relates to a vacuum heat treatment furnace, and more particularly, to a vacuum heat treatment furnace which is a vacuum heat treatment furnace which is used in a heat treatment method for displacing a metal introduced into a heating chamber to an enemy temperature and then cooling it, As shown in FIG.

진공 열처리로는 내부를 진공상태로 만든 상태에서 소재(금속)가 투입된 가열 챔버에 적의의 온도를 가한 후 냉각시켜 열처리하기 때문에 열처리 과정에서 오염의 발생이 적을 뿐만 아니라 가스 활동에 의한 금속반응(산화, 환원, 탈탄 등)이 거의 일어나지 않고 산화가 쉬운 원소가 첨가된 합금에 대해서도 산화를 방지하며 열처리를 할 수 있도록 한 것으로, 진공 열처리로에 의해 열처리된 금속은 표면광택이 우수할 뿐만 아니라 수소취성(hydrogen brittleness) 및 질소취성(nitrogen brittleness)이 거의 없고, 제품의 수명을 향상시킬 수 있는 등의 다양한 이점이 있기 때문에 진공 열처리로는 다양한 산업분야에서 널리 사용되고 있다.Since the vacuum heat treatment furnace is heated by applying the temperature to the heating chamber in which the material (metal) is injected in the state of vacuum inside, and is then cooled, the contamination is less likely to occur during the heat treatment process, , Reduction, decarburization, and the like) is hardly caused and the alloy to which the element which is easy to oxidize is added is also prevented from being oxidized and heat-treated. The metal heat-treated by the vacuum heat treatment furnace is excellent in surface gloss, there is little hydrogen brittleness and nitrogen brittleness and the life of the product is improved. Thus, the vacuum heat treatment furnace is widely used in various industrial fields.

통상적인 진공 열처리로는 개폐 도어를 구비하는 진공 하우징 내부에 가열 챔버를 설치하고, 가열 챔버의 내벽면에 복수의 히터를 설치하며, 진공 하우징의 외부에 구동모터에 의해 구동하는 송풍팬을 구비하는 냉각 하우징을 설치하여 구성한 것으로, 진공 하우징과 냉각 하우징을 연결배관으로 연결하여 진공 하우징 내부 공기를 순환시켜 열처리가 완료된 제품이 열적 충격에 의해 손상되지 않게끔 진공 하우징 내부를 서서히 냉각시키도록 하고 있다.In a typical vacuum heat treatment furnace, a heating chamber is provided in a vacuum housing having an opening and closing door, a plurality of heaters are provided on an inner wall surface of the heating chamber, and a blowing fan is driven outside the vacuum housing by a driving motor The vacuum housing and the cooling housing are connected by a connection pipe to circulate the air inside the vacuum housing so that the heat-treated product is slowly cooled inside the vacuum housing so as not to be damaged by thermal shock.

그리고, 또 다른 진공 열처리로에 있어서는 진공 하우징의 내부에 냉각을 위한 냉각(송풍)장치를 설치하여 진공 하우징 내부를 서서히 냉각시키도록 구성하는 경우도 있다.In another vacuum heat treatment furnace, a cooling (blowing) device for cooling may be provided inside the vacuum housing to gradually cool the inside of the vacuum housing.

진공 열처리로는 소결 또는 예비 소결 및 열처리하는 공정을 수행하기 위해 1000 ~ 1500℃ 정도의 고온으로 가열되기 때문에 열손실을 방지하면서 고온에 의해 열처리로의 내ㆍ외벽이 과열되는 현상을 방지하기 위해 별도로 제작되는 가열 챔버의 내벽에 내열성 및 단열성이 우수한 카본 그라파이트(Carbon Graphite) 등과 같은 탄소재질의 단열부재를 설치하고 있다.Since the vacuum heat treatment furnace is heated to a high temperature of about 1000 to 1500 ° C. in order to perform a sintering process, a pre-sintering process and a heat treatment process, in order to prevent heat loss and to prevent overheating of the inner and outer walls of the heat treatment furnace due to high temperature, A heat insulating member made of carbon such as carbon graphite having excellent heat resistance and heat insulating property is provided on the inner wall of the heating chamber to be manufactured.

[문헌 1] KP 10-0722859 A 2007. 05. 30.(진공로)[Document 1] KP 10-0722859 A 2007. 05. 30. (Vacuum Furnace)

[문헌 2] KP 20-0426713 A 2006. 09. 19.(로용 송풍기의 하우징 냉각구조)[Document 2] KP 20-0426713 A 2006. 09. 19. (Housing cooling structure of furnace blower)

[문헌 3] KP 20-0422204 A 2006. 07. 18.(로의 가열실 단열구조)[Literature 3] KP 20-0422204 A 2006. 07. 18. (Heating room insulation structure in furnace)

진공 열처리로는 진공 하우징의 내부 압력을 일정 기준 이상으로 유지하여야 우수한 열처리 효율을 기대할 수 있는데, 종래 진공 열처리로는 진공 하우징과 냉각 하우징을 연결배관으로 연결하여 진공 하우징 내부 공기를 순환시켜 냉각토록 구성함으로써 진공 하우징의 내부 압력을 소망하는 수준까지 높일 수 없어 열처리 효율이 떨어진다는 문제점이 지적되고 있다.In the vacuum heat treatment furnace, it is necessary to maintain the internal pressure of the vacuum housing at a predetermined level or more to obtain excellent heat treatment efficiency. In the conventional vacuum heat treatment furnace, the vacuum housing and the cooling housing are connected by a connection pipe, The internal pressure of the vacuum housing can not be increased to a desired level, thereby lowering the heat treatment efficiency.

한편, 진공 하우징 내부에 냉각을 위한 냉각장치를 설치할 경우가 있는데, 위와 같이 냉각장치를 구성하게 되면 진공 하우징 내부의 압력을 일정 기준 이상으로 높일 수 있으나 냉각장치가 고열하에서 작동하므로 장비의 손상이 우려될 뿐만 아니라 소망하는 수준의 냉각효과를 얻기가 어렵다는 등의 문제점이 지적되고 있다.On the other hand, there is a case where a cooling device for cooling is installed inside the vacuum housing. If the cooling device is constructed as described above, the pressure inside the vacuum housing can be increased to a certain level or more. However, since the cooling device operates under high temperature, And it is difficult to obtain a desired level of cooling effect.

그리고, 종래에는 원통형으로 제작되는 가열 챔버의 내벽면에 일치하는 단열부재를 사용하였는데, 위와 같은 단열부재는 일체화를 이루기 때문에 제작공정이 매우 까다롭고 일부분이 손상되더라도 단열부재 전체를 교체하여야 하기 때문에 유지보수에 따른 비용의 지출이 많다는 등의 문제점이 지적되고 있다.In addition, in the past, a heat insulating member corresponding to the inner wall surface of a heating chamber of a cylindrical shape was used. However, since the above-described heat insulating member is integrated, the manufacturing process is very difficult and even if a part of the heat insulating member is damaged, There is a problem such as a large expenditure of expenses due to maintenance.

그에 따라 단열부재를 판형태로 분할 제작하여 탈ㆍ부착가능하게 설치하여 단열판이 국부적으로 손상 및 파손되더라도 부분적인 교체가 가능하도록 한 가열 챔버가 안출되었으나 위와 같은 가열 챔버는 고온으로 열처리가 이루어지는 과정에서 단열판과 단열판이 접하는 경계점에서 고온에 따른 용융물이 흘러 금속의 표면에 침착되어 열처리된 금속 소재에 치명적인 결함을 발생시킨다는 문제점이 발생한다.Accordingly, a heat chamber is provided in which the heat insulating member is divided into a plate shape so as to be removable and attachable so that partial replacement is possible even if the heat insulating plate is locally damaged or damaged. However, in the process of heat treatment at a high temperature There is a problem that the melted material flows at a boundary point between the insulating plate and the insulating plate and is deposited on the surface of the metal to cause a fatal defect in the heat-treated metal material.

본 발명은 전술한 바와 같은 종래 진공 열처리로가 갖는 제반 문제점을 일소하기 위해 창출한 것으로서, 진공 하우징 내부에 설치되는 열교환기를 이용하여 냉각이 이루어지도록 함으로써 진공 하우징의 내부 압력을 일정 기준 이상으로 높여줄 수 있도록 함과 아울러 분할된 형태의 단열부재를 이용하여 유지보수에 따른 비용을 절감할 수 있도록 하면서 고온의 열처리 과정에서 발생하는 단열부재의 용융물이 열처리 과정에 있는 금속 소재에 영향을 줄 수 없도록 함으로써 우수한 열처리 효과를 얻을 수 있도록 함에 기술적 과제의 주안점을 두고 완성한 진공 열처리로를 제공하고자 한다.The present invention has been made in order to solve all the problems of the conventional vacuum heat treatment furnace as described above. The present invention provides cooling by using a heat exchanger installed inside a vacuum housing, thereby increasing the internal pressure of the vacuum housing to a certain level or higher In addition, it is possible to reduce the maintenance cost by using the divided heat insulating member, and prevent the melt of the heat insulating member, which is generated during the high temperature heat treatment process, from affecting the metal material in the heat treatment process And to provide a vacuum heat treatment furnace which is completed with a technical point of view in order to obtain an excellent heat treatment effect.

상기한 기술적 과제를 실현하기 위한 본 발명은 가열 챔버의 가열 하우징 내벽면에 동일 규격으로 된 복수의 단열판을 배열하여 체결수단으로 고정하고, 각 단열판의 단부가 접하는 경계지점에 단열판의 규격에 의해 각 단열판 간에 형성되는 내각과 일치되는 외각을 가지는 밀폐편을 결합하여 체결볼트로 고정하며, 가열 챔버의 후방 밀폐판에 통공을 설치하여 구성하고; 상기 가열 챔버의 후방에 가열 챔버와 직렬을 이루는 열교환기를 설치하고, 열교환기는 진공 하우징의 외부에 설치되는 냉각용 매질 순환장치와 연결하여 열교환기의 순환 파이프로 냉각용 매질을 순환시켜 주도록 구성하며; 상기 가열 챔버의 후방 밀폐판에 형성되는 통공에 열교환기의 선단에 마련된 개구부를 결합하여 가열 챔버와 열교환기가 연통하게끔 진공 열처리로를 구성한 것을 기술적 특징으로 하는 것이다.According to the present invention for realizing the above technical problem, a plurality of heat insulating plates of the same size are arranged on wall surfaces of a heating housing of a heating chamber and are fixed by fastening means. At the boundary point where the ends of the heat insulating plates touch, A sealing member having an outer angle coinciding with an inner angle formed between the heat insulating plates is coupled with the fixing bolt, and a through hole is formed in the rear sealing plate of the heating chamber; A heat exchanger in series with the heating chamber is provided in the rear of the heating chamber and the heat exchanger is connected to a cooling medium circulation device installed outside the vacuum housing to circulate the cooling medium through the circulation pipe of the heat exchanger; And a vacuum heat-treating furnace is constituted such that an opening provided in a front end of a heat exchanger is coupled to a through-hole formed in a rear sealing plate of the heating chamber so that the heat chamber and the heat exchanger are communicated with each other.

본 발명에서 제시하는 진공 열처리로는 진공 하우징 내부에 설치되는 열교환기를 이용하여 내부의 냉각이 이루어지도록 함으로써 내부 공기를 냉각장치로 순환시키는 종래의 방식에 비교해 진공 하우징의 내부 압력을 일정 기준 이상으로 높여줄 수 있기 때문에 열처리 효율을 우수하게 할 수 있으며, 복수의 단열판으로 단열구조를 구성함으로써 단열판에 대한 부분(개별)적인 교체 및 보수가 가능하게 하여 유지보수 비용을 절감할 수 있을 뿐만 아니라 각 단열판 사이를 밀폐편으로 마감하여 열처리 과정에서 고온에 의해 단열판에서 발생하는 불순물(용융물)이 낙하하여 열처리 과정에 있는 금속에 침착되는 것을 방지할 수 있는 등 본 발명은 그 기대되는 효과가 실로 다대한 발명이다.The vacuum heat treatment furnace proposed in the present invention can increase the internal pressure of the vacuum housing to a level higher than a conventional standard by using the heat exchanger installed inside the vacuum housing to cool the inside of the vacuum housing, The heat treatment efficiency can be improved and the heat insulating structure can be constructed by a plurality of heat insulating plates, so that it is possible to partly (individually) replace and repair the heat insulating plates, thereby reducing the maintenance cost, (Melts) generated in the heat insulating plate due to the high temperature during the heat treatment process can be prevented from dropping and being deposited on the metal in the heat treatment process, and the expected effect is indeed the invention of the invention .

도 1은 본 발명에서 제시하는 진공 열처리로의 바람직한 실시예를 도시한 사시도.
도 2는 진공 열처리로의 내부 구조를 도시한 참고 정단면도.
도 3은 진공 열처리로에 있어 가열실의 설치 구조를 설명하기 위한 참고 측단면도.
도 4는 도 3에 표시된 ⓥ의 확대도
도 5는 진공 열처리로에 있어 열교환기의 설치 구조를 설명하기 위한 참고 측단면도.
도 6은 본 발명에 따른 가열 챔버를 발췌한 사시도.
도 7은 본 발명에 따른 열교환기를 발췌한 사시도.1 is a perspective view showing a preferred embodiment of a vacuum heat treatment furnace proposed in the present invention.
FIG. 2 is a cross-sectional view showing the internal structure of a vacuum heat treatment furnace. FIG.
3 is a cross-sectional side view for explaining the installation structure of the heating chamber in the vacuum heat treatment furnace.
Fig. 4 is an enlarged view of Fig. 3
5 is a cross-sectional view for explaining an installation structure of a heat exchanger in a vacuum heat treatment furnace.
6 is a perspective view showing a heating chamber according to the present invention.
7 is a perspective view showing a heat exchanger according to the present invention.

도 1 내지 도 2에 본 발명에서 제시하는 진공 열처리로(10)의 바람직한 실시예가 도시되는데, 도시된 바와 같이 본 발명은 운용 배관 연결용 플랜지(22,23)를 구비하는 본체(21) 선단에 개폐 가능한 밀폐 도어(24)를 설치하여서 된 진공 하우징(20)의 내부에 열처리하고자 하는 금속을 투입하기 위한 가열 챔버(30)를 설치하여서 구성한 것으로, 가열 챔버(30)의 후방에 가열 챔버(30)와 직렬을 이루는 열교환기(40)를 설치한 것임을 확인할 수 있다.1 and 2 show a preferred embodiment of the vacuum heat treatment furnace 10 according to the present invention. As shown in the drawing, the present invention is characterized in that the main body 21 having the working pipe connecting flanges 22, A heating chamber 30 for introducing a metal to be heat treated is installed in a vacuum housing 20 provided with an openable and closable door 24. The heating chamber 30 is provided behind the heating chamber 30, And a heat exchanger 40 in series with the heat exchanger.

상기 본체(21)와 밀폐 도어(24)는 일정 간격을 유지하는 내,외판으로 구성하여 내,외판 사이에 중공부가 형성되도록 한다.The main body 21 and the closed door 24 are formed of inner and outer plates which are spaced apart from each other at a predetermined interval so that a hollow portion is formed between the inner and outer plates.

도 6에 본 발명에 따른 가열 챔버(30)를 발췌한 사시도가 도시되는데, 도시된 바와 같이 가열 챔버(30)는 전측이 개방된 원통체로 이루어지는 가열 하우징(31)의 내벽면에 동일 규격으로 된 복수의 단열판(32)을 배열하여 체결수단으로 고정하고, 각 단열판(32)의 단부가 접하는 경계지점에 단열판(32)의 규격(폭; L)에 의해 각 단열판(32) 간에 형성되는 내각(C1)과 일치되는 외각(C2)을 가지는 밀폐편(33)을 결합하여 체결볼트(B) 및 너트(N)로 고정하며,(도 4 참조) 가열 하우징(31)의 후방 밀폐판(31a)에 통공(34)을 형성하고, 통공(34)의 전측에 통공(34)과 이격되는 막음판(35)을 설치하여 구성한다.6 is a perspective view showing a heating chamber 30 according to an embodiment of the present invention. As shown in the figure, the heating chamber 30 has the same size as the inner wall surface of the heating housing 31, A plurality of heat insulating plates 32 are arranged and fixed by fastening means and an internal angle formed between each heat insulating plate 32 by a standard (width L) of the heat insulating plate 32 at a boundary point where ends of the heat insulating plates 32 contact The sealing member 33 having an outer angle C2 that agrees with the inner surface of the rear sealing plate 31a of the heating housing 31 is fixed with the tightening bolt B and the nut N And a blocking plate 35 spaced apart from the through hole 34 is provided on the front side of the through-hole 34. The through-

도 7에 본 발명에 따른 열교환기(40)를 발췌한 사시도가 도시되는데, 도시된 바와 같이 열교환기(40)는 사각 함체의 형태를 취하도록 하여 내측에 중공부가 마련되도록 한 냉각 하우징(41)의 전,후측에 개구부(42)와 배출구(43)를 각각 형성하고, 냉각 하우징(41)의 중공부를 순환하는 순환 파이프(44)의 양단을 유입배관(45)과 유출배관(46)에 각각 연결하여 유입배관(45)을 통해 유입된 냉각용 매질이 순환 파이프(44)를 경유하여 유출배관(46)으로 회수될 수 있도록 하며, 유입배관(45) 및 유출배관(46)은 진공 하우징(20)의 외부에 설치되는 냉각용 매질 순환장치(F)와 연결하여 열교환기(40)의 순환 파이프(44)를 통한 냉각용 매질의 순환이 이루어지도록 구성한다.FIG. 7 is a perspective view illustrating the heat exchanger 40 according to the present invention. As shown in FIG. 7, the heat exchanger 40 includes a cooling housing 41 having a hollow inside, Both ends of the circulation pipe 44 circulating the hollow portion of the cooling housing 41 are connected to the inlet pipe 45 and the outlet pipe 46 respectively So that the cooling medium introduced through the inlet pipe 45 can be recovered to the outlet pipe 46 via the circulation pipe 44 while the inlet pipe 45 and the outlet pipe 46 are connected to the vacuum housing And the cooling medium is circulated through the circulation pipe (44) of the heat exchanger (40).

상기 가열 챔버(30)의 가열 하우징(31) 후방 밀폐판(31a)에 형성되는 통공(34)에 열교환기(40)의 냉각 하우징(41) 선단에 마련된 개구부(41)를 결합하여 가열 하우징(31)의 통공(34)과 막음판(35) 사이의 틈을 통해 가열 챔버(30)와 열교환기(40)가 연통하도록 구성한다.The opening 41 provided at the front end of the cooling housing 41 of the heat exchanger 40 is coupled to the through hole 34 formed in the rear sealing plate 31a of the heating housing 31 of the heating chamber 30, The heat chamber 30 and the heat exchanger 40 communicate with each other through a gap between the through hole 34 and the barrier plate 35 of the heat exchanger 31. [

이상의 구성으로 된 본 발명은 진공 하우징(20)의 본체(21)에 마련된 운용 배관 연결용 플랜지(22,23)에 운용 배관(미도시됨)을 연결하고 가열 하우징(30)에 복수의 가열 히터(미도시됨)을 설치하여 사용하는 것으로, 가열 챔버(30) 내부에 설치되는 거치대(미도시됨) 등에 금속을 하고 진공 하우징(20)의 밀폐 도어(22)를 닫아 진공 하우징(20) 내부를 밀폐시킨 상태에서 장비를 가동시키면 가열 히터의 발열에 의해 가열 하우징(30)에 투입한 금속에 대한 열처리가 이루어지는 것이다.The present invention having the above-described configuration is characterized in that operating piping (not shown) is connected to operating piping connecting flanges 22 and 23 provided in a main body 21 of a vacuum housing 20, and a plurality of heating heaters (Not shown) is installed and used so that metal is put on a cradle (not shown) installed in the heating chamber 30 and the closing door 22 of the vacuum housing 20 is closed to open the inside of the vacuum housing 20 The heat is applied to the metal which has been introduced into the heating housing 30 by the heat generated by the heating heater.

본 발명은 진공 하우징(20) 내부에 설치되는 열교환기를 이용하여 내부의 냉각이 이루어지도록 함으로써 내부 공기를 외부(냉각장치)로 배출·순환시키는 종래의 방식에 비교해 진공 하우징의 내부 압력을 일정 기준 이상으로 높여줄 수 있기 때문에 열처리 효율을 우수하게 할 수 있는 것이다.In the present invention, the internal pressure of the vacuum housing is set to a predetermined level or higher, compared with a conventional method of discharging and circulating the internal air to the outside (cooling device) by using the heat exchanger installed inside the vacuum housing So that the heat treatment efficiency can be improved.

그리고, 본 발명은 복수의 단열판(32)으로 단열구조를 구성함으로써 단열판(32)에 대한 부분(개별)적인 교체 및 보수가 가능하게 하여 유지보수 비용을 절감할 수 있을 뿐만 아니라 각 단열판(32) 사이를 밀폐편(33)으로 마감하여 열처리 과정에서 고온에 의해 단열판(32에서 발생할 수 있는 불순물(용융물)이 낙하하여 열처리 과정에 있는 금속에 침착되는 것을 방지할 수 있는 것이다.In addition, the present invention is capable of partly (individually) replacing and repairing the heat insulating plate 32 by constructing a heat insulating structure with a plurality of the heat insulating plates 32, And the impurities (melted material) generated in the heat insulating plate 32 can be prevented from falling down due to the high temperature during the heat treatment process and being deposited on the metal in the heat treatment process.

10: 진공 열처리로 20: 진공 하우징
21: 본체 22: 밀폐 도어
30: 가열 챔버 31: 가열 하우징
32: 단열판 33: 밀폐편
40: 열교환기 41: 냉각 하우징
42: 개구부 43: 배출구
44: 순환 파이프 45: 유입배관
46: 유출배관 F : 냉각용 매질 순환장치10: Vacuum heat treatment furnace 20: Vacuum housing
21: Body 22: Closed door
30: heating chamber 31: heating housing
32: Heat insulating plate 33: Closed piece
40: heat exchanger 41: cooling housing
42: opening 43: outlet
44: circulation pipe 45: inflow pipe
46: Outflow pipe F: Cooling medium circulation device

Claims (1)

운용 배관 연결용 플랜지(22,23)를 구비하는 본체(21) 선단에 개폐 가능한 밀폐 도어(24)를 설치하여서 된 진공 하우징(20)의 내부에 열처리하고자 하는 금속을 투입하기 위한 가열 챔버(30)를 설치하여서 된 진공 열처리로(10)에 있어서;
상기 가열 챔버(30)는 전측이 개방된 원통체로 이루어지는 가열 하우징(31)의 내벽면에 동일 규격으로 된 복수의 단열판(32)을 배열하여 체결수단으로 고정하고, 각 단열판(32)의 단부가 접하는 경계지점에 단열판(32)의 규격(폭; L)에 의해 각 단열판(32) 간에 형성되는 내각(C1)과 일치되는 외각(C2)을 가지는 밀폐편(33)을 결합하여 체결볼트(B) 및 너트(N)로 고정하며, 가열 하우징(31)의 후방 밀폐판(31a)에 통공(34)을 형성하고, 통공(34)의 전측에 통공(34)과 이격되는 막음판(35)을 설치하여 구성하며;
상기 가열 챔버(30)의 후방에 가열 챔버(30)와 직렬을 이루게끔 설치되는 열교환기(40)는 내측에 중공부가 마련되도록 한 냉각 하우징(41)의 전,후측에 개구부(42)와 배출구(43)를 각각 형성하고, 냉각 하우징(41)의 중공부를 순환하는 순환 파이프(44)의 양단을 유입배관(45)과 유출배관(46)에 각각 연결하여 유입배관(45)을 통해 유입된 냉각용 매질이 순환 파이프(44)를 경유하여 유출배관(46)으로 회수될 수 있도록 하며, 유입배관(45) 및 유출배관(46)은 진공 하우징(20)의 외부에 설치되는 냉각용 매질 순환장치(F)와 연결하여 구성하고;
상기 가열 챔버(30)의 가열 하우징(31) 후방 밀폐판(31a)에 형성되는 통공(34)에 열교환기(40)의 냉각 하우징(41) 선단에 마련된 개구부(42)를 결합하여 가열 하우징(31)의 통공(34)과 막음판(35) 사이의 틈을 통해 가열 챔버(30)와 열교환기(40)가 연통하도록 구성한 것을 특징으로 하는 진공 열처리로.A heating chamber 30 for injecting a metal to be heat-treated into a vacuum housing 20 provided with a closed door 24 that is openable and closable at the front end of a main body 21 having flanges 22 and 23 for operating piping In a vacuum heat-treating furnace 10,
A plurality of heat insulating plates 32 of the same size are arranged on the inner wall surface of the heating housing 31 having a cylindrical front body and the heating chamber 30 is fixed by fastening means and the end portions of the heat insulating plates 32 A sealing member 33 having an outer angle C2 coinciding with the internal angle C1 formed between the heat insulating plates 32 by the standard (width L) of the heat insulating plate 32 is joined to the fastening bolt B A through hole 34 is formed in the rear sealing plate 31a of the heating housing 31 and a blocking plate 35 is formed on the front side of the through hole 34 so as to be spaced apart from the through hole 34. [ ;
The heat exchanger 40 installed in series with the heating chamber 30 behind the heating chamber 30 is provided with an opening 42 and an outlet 42 at the front and rear sides of the cooling housing 41, And both ends of the circulation pipe 44 circulating the hollow portion of the cooling housing 41 are connected to the inflow pipe 45 and the outflow pipe 46 to be connected to each other through the inflow pipe 45, The cooling medium can be recovered to the outflow pipe 46 via the circulation pipe 44 and the inflow pipe 45 and the outflow pipe 46 can be returned to the outside of the vacuum housing 20, Connected to the device (F);
The opening 42 provided at the front end of the cooling housing 41 of the heat exchanger 40 is coupled to the through hole 34 formed in the rear sealing plate 31a of the heating housing 31 of the heating chamber 30, Wherein the heating chamber (30) and the heat exchanger (40) are communicated with each other through a gap between the through hole (34) and the closing plate (35) of the heating chamber (31).
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Cited By (4)

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WO2018129666A1 (en) * 2017-01-11 2018-07-19 昆明理工大学 Vertical vibration vacuum furnace
KR20200144977A (en) 2019-06-20 2020-12-30 이준연 Heat treatment furnace with voltex jet type cooling nozzle
CN113915809A (en) * 2020-07-08 2022-01-11 核工业西南物理研究院 Local cooling structure of window flange on high-vacuum high-temperature operation device
CN114854975A (en) * 2022-05-05 2022-08-05 常熟市宝丰精工钢球有限公司 Hot-rolled steel ball annealing device and annealing process

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DE602004025983D1 (en) * 2004-03-18 2010-04-22 Ihi Corp DOUBLE CHAMBER HEAT TREATMENT FURNACE
KR100722859B1 (en) * 2006-12-22 2007-05-30 김철영 Vacuum furnace

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018129666A1 (en) * 2017-01-11 2018-07-19 昆明理工大学 Vertical vibration vacuum furnace
CN108700377A (en) * 2017-01-11 2018-10-23 昆明理工大学 A kind of vertical vibrating vacuum drying oven
CN108700377B (en) * 2017-01-11 2019-07-16 昆明理工大学 A kind of vertical vibrating vacuum drying oven
KR20200144977A (en) 2019-06-20 2020-12-30 이준연 Heat treatment furnace with voltex jet type cooling nozzle
CN113915809A (en) * 2020-07-08 2022-01-11 核工业西南物理研究院 Local cooling structure of window flange on high-vacuum high-temperature operation device
CN114854975A (en) * 2022-05-05 2022-08-05 常熟市宝丰精工钢球有限公司 Hot-rolled steel ball annealing device and annealing process
CN114854975B (en) * 2022-05-05 2024-01-16 常熟市宝丰精工钢球有限公司 Annealing device and annealing process for hot rolled steel balls

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