KR101831624B1 - N-hardening heat treatment apparatus - Google Patents

N-hardening heat treatment apparatus Download PDF

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KR101831624B1
KR101831624B1 KR1020160148153A KR20160148153A KR101831624B1 KR 101831624 B1 KR101831624 B1 KR 101831624B1 KR 1020160148153 A KR1020160148153 A KR 1020160148153A KR 20160148153 A KR20160148153 A KR 20160148153A KR 101831624 B1 KR101831624 B1 KR 101831624B1
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vacuum
chamber
heating chamber
vacuum heating
heat treatment
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남용호
최만호
양재윤
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(주)청호열처리
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    • 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
    • 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
    • C21D1/06—Surface hardening
    • 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
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/58—Oils
    • 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
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/24—Nitriding
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/80—After-treatment

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
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Abstract

The present invention relates to submersion-hardening heat treatment apparatus, which comprises: a vacuum heating room in which a heat-treatment object is heated and nitrified; a vacuum purge room provided in one side of the vacuum heating room and providing a path through which the heat-treatment object is delivered to the vacuum heating room while providing a path through which the heat-treatment object heated from the vacuum heating room is delivered to a quenching oil tank; the quenching oil tank disposed in a lower portion of the vacuum purge room and cooling and hardening the heat-treatment object heated from the vacuum heating room; and an intermediate room sealing a chamber between the vacuum heating room and the vacuum purge room. The vacuum heating room and the vacuum purge room are coupled to be detached from one side and the other side of the intermediate room. Moreover, the quenching oil tank is integrally arranged on the lower portion of the vacuum purge, so breakdown maintenance and post-maintenance can be easily executed. Therefore, a volume of the vacuum heating room and the vacuum purge room can be easily changed.

Description

침질경화 열처리장치 { N-HARDENING HEAT TREATMENT APPARATUS }[0001] N-HARDENING HEAT TREATMENT APPARATUS [0002]

본 발명은 침질경화 열처리장치에 관한 것으로, 더 자세하게는 공정가스가 충전된 진공가열실에서 가열된 열처리대상 물품을 진공퍼지실의 하부에 마련된 담금질실에서 냉각하는 것에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dipping hardening heat treatment apparatus, and more particularly, to a quenching chamber provided in a lower portion of a vacuum purge chamber for heating a heated object in a vacuum heating chamber filled with a processing gas.

일반적으로 열처리는 소재부품에 가열, 냉각에 의한 조직 제어를 통해 금속 또는 합금에 요구되는 강도, 경도, 내마모성, 내피로성, 내충격성, 가공성, 자성 등 여러 가지 성능을 개선하기 위해 필요한 생산 기술이며, 생산기반산업으로 공정 프로세스 중 가장 마지막 단계와 핵심 부분에 해당하므로 모든 산업 특히, 금속산업에 대한 파급효과가 막대하다.In general, heat treatment is a production technology required to improve various properties such as strength, hardness, abrasion resistance, fatigue resistance, impact resistance, workability and magnetic properties required for metal or alloy through controlling the structure by heating and cooling the material parts. As a production-based industry, it is the last stage and key part of the process, so the impact on all industries, especially the metal industry, is enormous.

본 발명이 관계하는 침질경화(N-Hardening)는 암모니아 가스(NH3)를 사용한 표면열처리 기술로서 기존 공정(침탄질화 800~900℃) 대비 낮은 온도(650~850℃)에서 열처리가 가능하고 Fe-N 상태도에서 질소 농도를 최소한(1~2% 이내)으로 줄일 수 있어 질화시간 단축 및 에너지 저감, 생산성 향상을 동시에 만족 가능한 기술이다.N-Hardening of the present invention is a surface heat treatment technique using ammonia gas (NH 3 ), which can be heat-treated at a low temperature (650 to 850 ° C.) compared to the conventional process (carburizing 800 to 900 ° C.) N can reduce the nitrogen concentration to a minimum (within 1 ~ 2%) in the N state diagram, and it is a technology capable of shortening the nitriding time, energy reduction, and productivity improvement at the same time.

또한, 침질경화는 기존 공정 대비 열처리 제품의 표면경도 및 피로강도를 동등수준으로 유지하면서 열처리 변형량을 저감하여 고품질 제품 생산이 가능하게 된다.In addition, dipping hardening can produce high quality products by reducing heat treatment deformation while keeping the surface hardness and fatigue strength of the heat treated products at the same level as those of conventional processes.

침질경화(N-Hardening)는 예를 들면 자동차 자동변속기의 핵심 기능부품이며 내구성 향상 및 고정도화가 동시에 만족이 필요한 박판형 토크 컨버터의 드라이븐 플레이트 및 프론트 커버 등에 적용할 수 있다.N-Hardening is a key functional component of an automotive automatic transmission, for example, and can be applied to driver plates and front covers of thin-plate torque converters that require both durability and rigidity at the same time.

침질경화 기술과 유사한 침탄(침탄질화) 기술은 Fe-C계 상태도의 오스테나이트(Austenite) 영역에서 鋼(강,steel)에 탄소(원자직경1.42)를 침입, 고용시키고 나서 급냉하여 단단한 마르텐사이트(Martensite)를 얻는 열처리 기술이며, 가스질화는 Fe-N계 상태도에서의 오스테나이트영역 이하에서 철(Fe)과 합금성분(Cr, Al, V, Ti, Nb 등)과 질소의 화합물로서 경화처리하는 기술이다.The carburizing (carburizing) technique similar to the steeping hardening technique involves carbon ingot (diameter 1.42) into steel (steel diameter) in the austenite region of the Fe-C phase diagram and then solidifying it by solidifying it into martensite Martensite. The gas nitridation is a process of curing as a compound of iron (Fe) and an alloy component (Cr, Al, V, Ti, Nb, etc.) and nitrogen at a temperature below the austenite range in the Fe- Technology.

하기의 특허문헌 1에는 피처리물을 침탄 질화하기 위한 가열실과 상기 가열실에 횡방향으로 인접해, 상기 가열실로 가열된 피처리물을 냉각하기 때문에 질소 가스로 입상물을 교반해서 형성되는 유동층 버스를 바닥부에 가지는 유동층 버스실을 가지며, 상기 유동층 버스실을 밀폐하는 수단과 유동층에서 방출되는 질소 가스를 냉각해 다시 유동층 중으로 송입하는 순환 수단을 설치한 것을 특징으로 하는 침탄 질화로가 개시되어 있다.The following Patent Document 1 discloses a heating chamber for nitriding the object to be treated and a fluidized bed which is formed by stirring the granular material with nitrogen gas in order to cool the object to be processed, which is heated in the heating chamber, And a circulation means for cooling the nitrogen gas discharged from the fluidized bed and feeding it back into the fluidized bed is provided in the fluidized bed bus room .

본 발명이 관계하는 침질경화(N-Hardening)는 Fe-N계 상태도의 오스테나이트 영역에서 鋼(강,steel)에 질소(원자직경1.06)를 침입.고용시키고 나서 급냉하여 단단한 질소 마르텐사이트를 얻는 열처리 기술이다.N-Hardening, in which the present invention is concerned, involves the step of introducing and melting nitrogen (atomic diameter 1.06) into steel (steel) in the austenite region of the Fe-N system phase and then quenching to obtain hard nitrogen martensite Heat treatment technology.

하기의 특허문헌 2에는 철 또는 철합금으로 구성되는 워크를 암모니아가 공급되는 노 내에 설치해, 금속 부재로 구성되어 노 내 분위기에 접촉하도록 배치되는 히터에 의해 상기 노 내를 가열해, 그 후 담금질 처리를 함으로써, 상기 워크에 질소를 침투 확산시킴과 동시에 담금질을 하는 침질 담금질 방법으로서, 상기 히터의 표면에서의 산화막 형성 범위를 조정함으로써, 히터 표면에서의 암모니아의 분해도합을 제어하는 것을 특징으로 하는 침질 담금질 방법이 개시되어 있다.In the following Patent Document 2, a work composed of iron or an iron alloy is provided in a furnace in which ammonia is supplied, the inside of the furnace is heated by a heater composed of a metal member so as to be in contact with the furnace atmosphere, In which the nitrogen is penetrated and diffused into the work so as to perform quenching, characterized in that the decomposition bonding of ammonia on the surface of the heater is controlled by adjusting the formation range of the oxide film on the surface of the heater A quenching method is disclosed.

한편, 자동차의 토크 컨버터(Torque Converter)는 자동변속기에 있어서 동력성능이나 연비성능에 크게 기여하는 기능부품이며, 공간이나 중량이 차지하는 비율이 높으며, 엔진의 플라이휠(Flywheel)에서 받은 동력은 프론트 커버(Front Cover), 록업 클러치 어셈블리(Lock-up Clutch Assembly), 터빈(Turbine), 리액터 어셈블리(Reactor Assembly), 임펠러(Impeller)로 구성되는 토크 컨버터를 거쳐 변속기로 전달되며 고소형화 및 고기능화에 대한 요구가 매우 높다,On the other hand, a torque converter of an automobile is a functional part that contributes greatly to power performance and fuel efficiency performance in an automatic transmission, and the space and weight occupy a high ratio. The power received from the engine flywheel is transmitted to the front cover The torque converter that is composed of a front cover, a lock-up clutch assembly, a turbine, a reactor assembly, and an impeller is transmitted to the transmission. Very high,

토크 컨버터의 박판형 드레이븐 플레이트 및 프론트 커버는 강성 향상을 위해 국내에서는 침탄질화처리 후 프레스 템퍼링을 3~4회 실시하여 열변형을 제거하지만 정밀도가 확보되지 않아 6% 정도의 불량률이 발생하고 있어 변형 극소화를 위한 특수 열처리기술 개발 시급하다.In order to improve the rigidity of the thin plate type raven plate and the front cover of the torque converter, the carburizing and nitriding treatment is carried out after the press tempering 3 ~ 4 times to remove the thermal deformation. However, since the precision is not ensured, Development of special heat treatment technology for minimization is urgent.

현재 토크 컨버터의 소형화와 내구성 향상 및 고정도화를 위해 드레이븐 플레이트 열처리의 열변형 극소화가 가능한 침질경화(N-Hardening) 공정 기술 개발 필요한 실정이다.In order to miniaturize the torque converter, improve the durability and fix the torque converter, it is necessary to develop the N-Hardening process technology capable of minimizing thermal deformation of the heat treatment of the drag blade plate.

일본 공개특허공보 제1994-172962호 (1994년 06월 21일 공개)Japanese Laid-Open Patent Publication No. 1994-172962 (published on June 21, 1994) 일본 공개특허공보 제2009-299122호 (2009년 12월 24일 공개)Japanese Patent Application Laid-Open No. 2009-299122 (published on December 24, 2009)

종래 기술에 따른 침질경화 열처리장치는 진공가열실 및 중간실, 진공퍼지실이 일체로 구성되어 있기 때문에 각 부위의 고장수리나 유지보수가 어렵게 될 뿐 아니라 용량을 가변하기가 어렵게 되는 문제가 있었다.Since the vacuum heating chamber, the intermediate chamber, and the vacuum purge chamber are integrally formed, the conventional submerged curing heat treatment apparatus has a problem that it is difficult to repair or maintain each part and also to vary the capacity.

또한, 종래 기술에 따른 침질경화 열처리장치는 열처리대상 물품의 이송이 원활하게 이루어지지 않기 때문에 침질경화 효율이 떨어지게 됨은 물론 생산성이 저하되는 문제가 있었다.In addition, since the transfer of the article to be heat-treated is not smoothly performed in the conventional sludge-curing heat treatment apparatus, the sludge curing efficiency is lowered and the productivity is lowered.

또한, 종래 기술에 따른 침질경과 열처리장치는 공정가스나 유증기가 작업장으로 누설되어 작업장 환경을 오염시키게 되는 문제가 있었다. In addition, the conventional steep slope heat treatment apparatus has a problem that the process gas or vapor leaks into the workplace, thereby polluting the workplace environment.

본 발명은 상기 종래 기술에 따른 침질경화 열처리장치의 문제점을 해결하기 위한 것으로, 그 목적이 열처리대상 물품을 보다 안정적으로 침질경화시킬 수 있도록 하는 침질경화 열처리장치를 제공하는 데에 있는 것이다.An object of the present invention is to solve the problems of the above-mentioned prior art dipping hardening heat treatment apparatus, and an object of the present invention is to provide a dipping hardening heat treatment apparatus capable of more stably immersing and curing the article to be heat treated.

본 발명의 다른 목적은 열처리대상 물품을 가열하는 공간인 진공가열실 및 열처리대상 물품이 냉각하는 공간인 진공퍼지실을 보다 간편하게 설치할 수 있도록 하고, 고장수리와 유지보수를 보다 간편하게 할 수 있도록 하는 침질경화 열처리장치를 제공하는 데에 있는 것이다.Another object of the present invention is to provide a vacuum heating chamber which is a space for heating a product to be heat-treated and a vacuum purge chamber which is a space for cooling the product to be heat-treated more easily, and which enables easy repairing and maintenance And to provide a curing heat treatment apparatus.

본 발명의 다른 목적은 열치리대상 물품을 안정적으로 이송할 수 있도록 하여 침질경화 효율을 향상시킬 수 있도록 하고, 작업시간 단축과 생산성 향상을 도모할 수 있도록 한 침질경화 열처리장치를 제공하는 데에 있는 것이다.Another object of the present invention is to provide a dipping hardening heat treatment apparatus capable of improving the dipping hardening efficiency by allowing the article to be heat-treated to be stably transported, and shortening the working time and improving the productivity will be.

상기한 바와 같은 목적을 달성하기 위하여, 본 발명에 따른 침질경화 열처리장치는 열처리대상 제품에 대한 가열 및 질화가 진행되는 진공가열실; 진공가열실의 일측에 마련되고, 열처리대상 제품이 진공가열실로 투입되는 경로를 제공하는 동시에 진공가열실에서 가열된 열처리대상 제품이 소입유조에 투입되는 경로를 제공하는 진공퍼지실; 진공퍼지실의 하부에 마련되고,진공가열실에서 가열된 열처리대상 제품을 냉각, 경화하는 소입유조; 진공가열실과 진공퍼지실의 사이 공간을 밀폐하는 중간실;을 포함하고, 중간실의 일측과 타측에 진공가열실과 진공퍼지실이 분리가능하게 결합되고, 진공퍼지실의 하부에 소입유조가 일체로 마련된 것을 특징으로 한다.According to an aspect of the present invention, there is provided a dipping hardening heat treatment apparatus comprising: a vacuum heating chamber for heating and nitriding a product to be heat treated; A vacuum purge chamber provided at one side of the vacuum heating chamber for providing a path for introducing the product to be heated into the vacuum heating chamber and for providing a path through which the object to be heated is heated in the vacuum heating chamber; A quenching oil reservoir provided at a lower portion of the vacuum purge chamber for cooling and curing the heated product to be heated in the vacuum heating chamber; And a vacuum purge chamber is detachably coupled to one side of the intermediate chamber and the other side of the vacuum chamber, and a vacuum oil purifier chamber is integrally formed at a lower portion of the vacuum purge chamber .

본 발명에 따른 침질경화 열처리장치는 진공퍼지실의 일측과 타측에 제1출입구와 제2출입구가 마련되고, 진공가열실의 일측에 제3출입구가 마련되고, 제1출입구와 제2출입구, 그리고 제3출입구에 개폐실린더를 통해 승강 개폐되는 제1도아, 제2도아, 제3도아가 설치되고, 진공퍼지실과 중간실, 진공가열실에 열처리대상 물품을 이송하는 컨베이어유니트가 각각 설치된 것을 특징으로 한다. The apparatus for curing sludge according to the present invention is characterized in that the vacuum purging chamber is provided with a first doorway and a second doorway on one side and the other side thereof, a third doorway is provided on one side of the vacuum heating chamber, a first doorway and a second doorway, A third door is provided with a first door, a second door, and a third door that are lifted and lowered through an opening / closing cylinder, and a conveyor unit for conveying the article to be heat-treated to the vacuum purge chamber, the intermediate chamber, do.

본 발명에 따른 침질경화 열처리장치의 각 컨베이어유니트는 컨베이어모터, 컨베이어벨트, 컨베이어롤러를 포함하는 것을 특징으로 한다.Each of the conveyor units of the dipping hardening heat treatment apparatus according to the present invention is characterized by including a conveyor motor, a conveyor belt, and a conveyor roller.

본 발명에 따른 침질경화 열처리장치는 진공퍼지실의 일측에 위치하는 제1도아의 하부 및 중간실에 위치하는 제2도아 및 제3도아의 하부에 아이들롤러가 설치된 것을 특징으로 한다.The dipping hardening heat treatment apparatus according to the present invention is characterized in that idle rollers are installed in the lower part of the first door located at one side of the vacuum purge chamber and the lower part of the second door and the third door located in the intermediate room.

본 발명에 따른 침질경화 열처리장치는 진공퍼지실의 일측에 분위기 가스를 충전할 수 있도록 하는 분위기 가스 공급관이 설치되고, 진공퍼지실을 진공퍼지할 수 있도록 하는 제2진공퍼지관이 마련된 것을 특징으로 한다.The apparatus for curing sludge according to the present invention is characterized in that an atmospheric gas supply pipe for charging atmospheric gas is provided at one side of the vacuum purge chamber and a second vacuum purge pipe for vacuum purging the vacuum purge chamber is provided do.

본 발명에 따른 침질경화 열처리장치는 진공가열실의 내부에 다수의 수직형 히터와 수평형 히터가 설치되고, 진공가열실의 내부 벽면에 단열재가 시공된 것을 특징으로 한다.The dipping hardening heat treatment apparatus according to the present invention is characterized in that a plurality of vertical heaters and horizontal heaters are installed in a vacuum heating chamber, and a heat insulating material is applied to the inner wall surface of the vacuum heating chamber.

본 발명에 다른 침질경화 열처리장치는 진공가열실에 시공되는 단열재는 세라믹 화이버(ceramic fiber)인 것을 특징으로 한다.In the dipping hardening heat treatment apparatus according to the present invention, the heat insulating material applied to the vacuum heating chamber is a ceramic fiber.

본 발명에 따른 침질경화 열처리장치는 진공가열실의 일측에 공정가스 공급관이 설치되고, 진공가열실의 내부 상부에 공정가스의 정보를 측정하기 위한 가스센서가 설치되고, 진공가열실의 상단 일측에 진공가열실 내부에서 분해된 공정가스를 외부로 배출시켜 연소하기 위한 제1가스배출관이 설치되고, 제1가스배출관에 개폐밸브가 설치되고, 개폐밸브의 토출측에 버너가 설치된 것을 특징으로 한다.In the submerged curing heat treatment apparatus according to the present invention, a process gas supply pipe is provided at one side of a vacuum heating chamber, a gas sensor for measuring information of the process gas is installed in an upper portion of the vacuum heating chamber, A first gas discharge pipe for discharging the process gas decomposed in the vacuum heating chamber to burn the gas is disposed, a first gas discharge pipe is provided with an open / close valve, and a burner is provided at the discharge side of the open / close valve.

본 발명에 따른 침질경화 열처리장치는 진공퍼지실의 상단에 제2가스배출관이 마련되고, 제2가스배출관이 제1가스배출관을 통해 버너에 접속된 것을 특징으로 한다.The dipping hardening heat treatment apparatus according to the present invention is characterized in that a second gas discharge pipe is provided at the upper end of the vacuum purge chamber and a second gas discharge pipe is connected to the burner through the first gas discharge pipe.

본 발명에 따른 침질경화 열처리장치의 소입유조는 진공퍼지실의 하부에 마련되는 담금질부; 담금질부의 후방에 마련되고, 상부와 하부에 담금질부와 연결되는 연결구멍이 마련되는 순환부;를 포함하고, 담금질부의 내부 하부에 담금질유를 가열하는 담금질유 가열히터가 설치된 것을 특징으로 한다.The quenching oil tank of the dipping hardening heat treatment apparatus according to the present invention comprises: a quenching section provided at a lower portion of the vacuum purge chamber; And a circulation unit provided at a rear of the quenching unit and provided with connection holes connected to the quenching unit at the upper part and the lower part, and a quenching oil heating heater for heating the quenching oil is installed at the inner lower part of the quenching unit.

본 발명에 따른 침질경화 열처리장치는 순환부의 상단에 순환모터가 설치되고, 순환부의 내부로 투입되는 순환모터축에 순환팬이 마련된 것을 특징으로 한다.The dipping hardening heat treatment apparatus according to the present invention is characterized in that a circulation motor is installed at the upper end of the circulation part and a circulation fan is provided at the circulation motor shaft inserted into the circulation part.

본 발명에 따른 침질경화 열처리장치는 순환부의 내부 하단에 담금질유의 원활한 순환을 유도하는 경사가이드가 마련된 것을 특징으로 한다.The dipping hardening heat treatment apparatus according to the present invention is characterized in that a slope guide is provided to induce smooth circulation of quenching oil to the inner lower end of the circulation part.

본 발명에 따른 침질경화 열처리장치에 의하면, 열처리대상 물품을 가열하거나 냉각하는 진공가열부 및 진공퍼지실을 간편하게 조립하거나 분리할 수 있게 되어 고장수리나 사후정비를 용이하게 할 수 있게 되고, 진공가열부 및 진공퍼지실의 용량을 손쉽게 가변할 수 있게 된다.According to the dipping hardening heat treatment apparatus of the present invention, it is possible to easily assemble or separate the vacuum heating section and the vacuum purge chamber for heating or cooling the article to be heat treated, thereby facilitating troubleshooting and post-maintenance, And the capacity of the vacuum purge chamber can be easily changed.

본 발명에 따른 침질경화 열처리장치에 의하면, 진공가열실의 내부에서 분해된 공정가스 및 냉각과정에서 발생하는 유증기를 연소하여 작업장의 환경을 개선할 수 있게 됨은 물론 대기오염을 방지할 수 있게 된다.According to the dipping hardening heat treatment apparatus according to the present invention, the process gas decomposed in the vacuum heating chamber and the vapor generated in the cooling process are burned to improve the workplace environment and to prevent air pollution.

본 발명에 따른 침질경화 열처리장치에 의하면, 진공가열실의 단열성을 향상시킬 수 있게 되고, 열처리대상 물품에 대한 이송을 원활하게 할 수 있게 되어 침질경화 효율을 향상시킬 수 있게 됨은 물론 작업시간 단축과 생산성 향상을 도모할 수 있게 된다.According to the immersion hardening heat treatment apparatus of the present invention, it is possible to improve the heat insulating property of the vacuum heating chamber, to smoothly transfer the article to the heat treatment target, thereby improving the immersion hardening efficiency, Productivity can be improved.

도 1은 본 발명에 따른 침질경화 열처리장치의 개념도,
도 2는 본 발명의 바람직한 실시 예에 따른 침질경화 열처리장치의 종단면도,
도 3은 동 바람직한 실시 예에 따른 침질경화 열처리장치의 횡단면도,
도 4는 동 바람직할 실시 예에 따른 침질경화 열처리장치의 진공가열실의 종단면도,
도 5는 동 바람직할 실시 예에 따른 침질경화 열처리장치의 진공퍼지실 및 소입유조의 종단면도.1 is a conceptual view of a submerged curing heat treatment apparatus according to the present invention,
2 is a longitudinal sectional view of a submerged curing heat treatment apparatus according to a preferred embodiment of the present invention,
3 is a cross-sectional view of the dipping hardening heat treatment apparatus according to the presently preferred embodiment,
4 is a vertical cross-sectional view of a vacuum heating chamber of the submerged-curing heat treatment apparatus according to the presently preferred embodiment,
5 is a vertical cross-sectional view of a vacuum purge chamber and a quenching oil reservoir of a dipping hardening heat treatment apparatus according to a preferred embodiment of the present invention.

이하 본 발명에 따른 침질경화 열처리장치를 첨부된 도면에 의거하여 상세하게 설명하면 다음과 같다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a dipping hardening heat treatment apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

이하에서, "상방", "하방", "전방" 및 "후방" 및 그 외 다른 방향성 용어들은 도면에 도시된 상태를 기준으로 정의한다.In the following, the terms "upward", "downward", "forward" and "rearward" and other directional terms are defined with reference to the states shown in the drawings.

도 1은 본 발명에 따른 침질경화 열처리장치의 개념도이다.1 is a conceptual diagram of a dipping hardening heat treatment apparatus according to the present invention.

본 발명에 따른 침질경화 열처리장치(100)는 진공가열실(110), 진공퍼지실(120), 소입유조(130), 중간실(140)을 포함한다.The dipping hardening heat treatment apparatus 100 according to the present invention includes a vacuum heating chamber 110, a vacuum purge chamber 120, a pouring oil tank 130, and a middle chamber 140.

진공가열실(110)은 열처리대상 제품(P)에 대한 가열 및 질화가 진행되는 공간으로, 진공퍼지된 후 내부에 공정가스인 암모니아(NH3)가 충전된다.The vacuum heating chamber 110 is a space in which heating and nitriding of the product P to be heat-treated proceeds. After the vacuum is purged, ammonia (NH 3 ) as a process gas is filled in the vacuum heating chamber 110.

진공가열실(110)의 내부에는 공정가스를 가열하는 히터(111)가 설치된다.Inside the vacuum heating chamber 110, a heater 111 for heating a process gas is provided.

진공퍼지실(120)은 열처리대상 제품(P)이 진공가열실(110)로 투입되는 경로를 제공하는 동시에 진공가열실(110)에서 가열된 열처리대상 제품(P)이 소입유조(130)에 투입되는 경로를 제공하는 것으로, 진공가열실(110)의 일측에 마련된다.The vacuum purge chamber 120 provides a path through which the article P to be heat-treated is introduced into the vacuum heating chamber 110 and the product P heated by the vacuum heating chamber 110 is introduced into the inlet oil tank 130 And is provided on one side of the vacuum heating chamber 110. [

진공퍼지실(120)은 외부로부터 열처리대상 제품(P)이 유입된 후 진공퍼지되고, 진공퍼지된 후 내부에 분위기가스인 질소(N2)가 충전된다.The vacuum purge chamber 120 is vacuum purged after the product P to be heat-treated flows from the outside, is purged, and then nitrogen (N 2 ), which is atmospheric gas, is filled therein.

소입유조(130)는 진공가열실(110)에서 가열된 열처리대상 제품(P)을 담금질하기 위한 공간으로, 진공퍼지실(120)의 하부에 마련되고, 내부에 담금질유가 충전된다.The quenching oil tub 130 is a space for quenching the heated product P heated in the vacuum heating chamber 110 and is provided at a lower portion of the vacuum purge chamber 120 and is filled with quenching oil.

중간실(140)은 진공가열실(110)과 진공퍼지실(120)의 사이 공간을 밀폐하기 위한 것이다.The intermediate chamber 140 seals the space between the vacuum heating chamber 110 and the vacuum purge chamber 120.

본 발명에 따른 침질경화 열처리장치(100)에 있어서 열처리대상 물품(P)은 외부로부터 진공퍼지실(120)을 거쳐 진공가열실(110)로 공급되며, 최초로 진공가열실(110)에 열처리대상 물품이 공급되는 때에 진공가열실(110)의 내부는 진공퍼지되고, 그 후에 공정가스인 암모니아(NH3)가 충전된다.The object P to be heat treated in the dipping hardening heat treatment apparatus 100 according to the present invention is supplied from the outside to the vacuum heating chamber 110 via the vacuum purge chamber 120 and is first heated in the vacuum heating chamber 110 When the article is supplied, the inside of the vacuum heating chamber 110 is vacuum purged, and then ammonia (NH 3 ), which is a process gas, is charged.

진공가열실(110)에서 가열되면서 조직 내부에 질소 원자가 침투된 열처리대상 물품(P)은 진공퍼지실(120)로 이동된 후 승강수단을 통해 소입유조(130)로 하강하여 소입유조(130)에 충전된 담금질유에 의해 급속 냉각된다.The object P to which the nitrogen atoms have been impregnated into the tissue while being heated in the vacuum heating chamber 110 is moved to the vacuum purge chamber 120 and then descends into the feed oil tank 130 through the lifting means, Is rapidly cooled by the quenching oil filled in the furnace.

소입유조(130)에서 급속 냉각되어 경화된 열처리대상 물품(P)은 승강수단을 통해 진공퍼지실(120)로 상승되고, 외부로 배출된다.The heat-treated article P which is rapidly cooled and hardened in the quenching oil vessel 130 is raised to the vacuum purge chamber 120 through the elevating means and discharged to the outside.

도 2는 본 발명의 바람직한 실시 예에 따른 침질경화 열처리장치의 종단면도이고, 도 3은 동 바람직한 실시 예에 따른 침질경화 열처리장치의 횡단면도이고, 도 4는 동 바람직할 실시 예에 따른 침질경화 열처리장치의 진공가열실의 종단면도이다.FIG. 2 is a longitudinal sectional view of a dipping hardening heat treatment apparatus according to a preferred embodiment of the present invention, FIG. 3 is a transverse sectional view of the dipping hardening heat treatment apparatus according to the presently preferred embodiment, FIG. 4 is a cross- Fig. 7 is a longitudinal sectional view of the vacuum heating chamber of the apparatus.

본 발명의 바람직한 실시 예에 따른 침질경화 열처리장치(100)는 진공가열실(110)과 중간실(140), 진공퍼지실(120)이 분리 가능하게 구성되어 진공가열실(110) 또는 진공퍼지실(120)의 용량을 가감할 수 있게 된다.The dipping hardening heat treatment apparatus 100 according to the preferred embodiment of the present invention is configured such that the vacuum heating chamber 110, the intermediate chamber 140, and the vacuum purge chamber 120 are detachably connected to the vacuum heating chamber 110, The capacity of the chamber 120 can be increased or decreased.

즉, 본 발명의 바람직한 실시 예에 따른 침질경화 열처리장치(100)는 중간실(140)의 일측과 타측에 진공가열실(110)과 진공퍼지실(120)이 나사 체결방식으로 조립되고, 진공퍼지실(120)의 하부에 소입유조(130)가 일체로 마련된 형태를 가진다.That is, in the dipping hardening heat treatment apparatus 100 according to the preferred embodiment of the present invention, the vacuum heating chamber 110 and the vacuum purge chamber 120 are assembled to one side and the other side of the intermediate chamber 140 by a screw fastening method, And a purge gas chamber 120 is integrally provided at a lower portion of the purge chamber 120.

본 발명의 바람직한 실시 예에 따른 침질경화 열처리장치(100)의 진공퍼지실(120)의 일측과 타측에는 제1출입구(151)와 제2출입구(152)가 마련되고, 진공가열실(110)의 일측에는 제3출입구(153)가 마련된다.The first and second entrance and exit ports 151 and 152 are provided on one side and the other side of the vacuum purge chamber 120 of the dipping hardening heat treatment apparatus 100 according to the preferred embodiment of the present invention, And a third entrance 153 is provided at one side of the door.

제1출입구(151)와 제2출입구(152), 그리고 제3출입구(153)에는 개폐실린더(161s)(162s)(163s)를 통해 승강 개폐되는 제1도아(161), 제2도아(162), 제3도아(163)가 설치된다.The first door 161, the second doorway 162 and the third doorway 153 are provided with a first door 161 and a second door 162 which are lifted and lowered through opening and closing cylinders 161s, 162s and 163s, respectively, And a third door 163 are provided.

제1도아(161)는 진공퍼지실(120)의 외측에 위치하게 되고, 제2도아(162) 및 제3도아(163)는 중간실(140)의 내부에 위치하게 된다.The first door 161 is located outside the vacuum purge chamber 120 and the second door 162 and the third door 163 are located inside the intermediate chamber 140.

본 발명의 바람직한 실시 예에 따른 침질경화 열처리장치(100)는 진공퍼지실(120)과 중간실(140), 진공가열실(110)에 각각 컨베이어유니트(210)(220)(230)가 설치된다.The dipping hardening heat treatment apparatus 100 according to the preferred embodiment of the present invention is provided with the conveyor units 210, 220 and 230 installed in the vacuum purge chamber 120, the intermediate chamber 140 and the vacuum heating chamber 110, do.

각 컨베이어유니트(210)(220)(230)는 컨베이어모터(211)(221)(231), 컨베이어벨트(212)(222)(232), 컨베이어롤러(213)(223)(233)를 포함한다.Each conveyor unit 210 (220) 230 includes a conveyor motor 211 (221) 231, a conveyor belt 212 (222) 232, and a conveyor roller 213 (223) 233 do.

진공퍼지실(120)의 일측에 위치하는 제1도아(161)의 하부 및 중간실(140)에 위치하는 제2도아(162) 및 제3도아(163)의 하부에는 아이들롤러(214)(224)가 설치된다.A lower portion of the first door 161 located at one side of the vacuum purge chamber 120 and a lower portion of the second door 162 and the third door 163 located at the intermediate chamber 140 are provided with idler rollers 214 224 are installed.

열처리대상 물품 공급대(300)로부터 진공퍼지실(120)로 열처리대상 물품(P)이 공급되는 때에는 제1도아(161)가 개방되고, 진공퍼지실(120)의 제1컨베이어유니트(210)의 제1컨베이어모터(211)가 작동되면 제1출입구(151)을 통해 진공퍼지실(120)의 내부로 유입되어 제1컨베이어벨트(212)에 올려진 열처리대상 물품(P)이 중간실(140)쪽으로 이송된다.The first door 161 is opened and the first conveyor unit 210 of the vacuum purge chamber 120 is opened when the article P to be heat treated is supplied to the vacuum purge chamber 120 from the heat- When the first conveyor motor 211 of the first conveyor motor 211 of the first conveyor belt 211 is operated, the object P to be heat-treated, which is introduced into the vacuum purge chamber 120 through the first entrance 151 and loaded on the first conveyor belt 212, 140).

제1도아(161)는 열처리대상 물품(P)이 진공퍼지실(120)로 완전 진입한 후에 폐쇄작동된다.The first door 161 is closed after the heat-treated article P has completely entered the vacuum purge chamber 120.

진공퍼지실(120)의 후방에는 분위기 가스 공급관(123)이 마련되고, 진공퍼지실(120)의 전방에는 제2진공퍼지관(128)이 마련된다.An atmosphere gas supply pipe 123 is provided behind the vacuum purge chamber 120 and a second vacuum purge pipe 128 is provided in front of the vacuum purge chamber 120.

제1도아(161)가 폐쇄작동된 후에는 진공퍼지실(120)에 대한 진공퍼지가 진행되고, 분위기 가스 공급관(123)을 통해 진공퍼지실(120)의 내부에 분위기 가스인 질소(N2)가 충전된다.After the first door 161 is closed, vacuum purging for the vacuum purge chamber 120 proceeds and nitrogen (N 2 (nitrogen)), which is an atmosphere gas, is introduced into the vacuum purge chamber 120 through the atmosphere gas supply pipe 123. Is charged.

진공퍼지실(120)의 진공퍼지는 제2진공퍼지관(128)에 접속된 진공펌프를 통해 진공퍼지실(120)의 공기를 뽑아내어 진공퍼지실(120) 내부를 진공상태로 만드는 것을 의미한다.The vacuum purging chamber 120 is evacuated and the vacuum purging chamber 120 is evacuated through the vacuum pump connected to the second vacuum purging pipe 128 to evacuate the interior of the vacuum purge chamber 120 .

제2도아(162) 및 제3도아(163)는 제1컨베이어유니트(210)를 통해 중간실(140)로 이송되는 열처리대상 물품(P)이 제2출입구(152)를 통해 중간실(140)로 진입하기 전에 개방작동된다.The second door 162 and the third door 163 are connected to the intermediate room 140 through the first conveyor unit 210 through the second doorway 152, ).

그리고 제2도아(162) 및 제3도아(163)가 개방작동할 때에 제2컨베이어유니트(220)의 제2컨베이어모터(221)가 동시 작동된다. And the second conveyor motor 221 of the second conveyor unit 220 is operated simultaneously when the second door 162 and the third door 163 are opened.

중간실(140)에 위치하는 제2도아(162)와 제3도아(163)가 개방작동하게 되면 제2도아(162)와 제3도아(163)의 하부에 설치된 아이들롤러(224)가 제2컨베어이벨트(222)와 평행한 위치로 상승된다.When the second door 162 and the third door 163 located in the middle chamber 140 are opened, the idler roller 224 installed at the lower portions of the second door 162 and the third door 163 2 conveyor belt 222. In this way,

제2출입구(152)를 통해 중간실(140)에 진입한 열처리대상 물품(P)은 제2도아 연동 아이들롤러(224) 및 제2컨베어벨트(222), 제3도아 연동 아이들롤러(224)를 통해 진공가열실(110)쪽으로 이송된다.The article P to be heat treated to enter the intermediate chamber 140 through the second entrance 152 enters the second door interlocking idle roller 224 and the second conveyor belt 222 and the third door interlocking idle roller 224, To the vacuum heating chamber (110).

제3출입구(153)를 통해 진공가열실(110)로 열처리대상 물품(P)이 진입하기 전에 제3컨베이어유니트(230)의 제3컨베이어모터(231)가 작동되고, 제3출입구(153)를 통해 진공가열실(110)로 진입한 열처리대상 물품(P)은 진공가열실(110) 중앙의 열처리 위치로 이송된다.The third conveyor motor 231 of the third conveyor unit 230 is operated before the heat treatment subject P enters the vacuum heating chamber 110 through the third doorway 153 and the third doorway 153 is operated, The article to be heat treated P which has entered the vacuum heating chamber 110 is transferred to the heat treatment position in the center of the vacuum heating chamber 110.

제2도아(162) 및 제3도아(163)는 열처리대상 물품(P)이 진공가열실(120)로 완전 진입한 후에 폐쇄작동된다.The second door 162 and the third door 163 are closed after the heat-treated article P has completely entered the vacuum heating chamber 120.

진공가열실(110)의 일측에는 제3출입구(153) 반대쪽으로 이송되는 열처리대상 물품(P)을 정확한 열처리 위치에 정지시킬 수 있도록 하는 스톱퍼가 마련된다.A stopper is provided at one side of the vacuum heating chamber 110 to stop the article P to be heat-treated to be conveyed to the opposite side of the third doorway 153 at the correct heat treatment position.

진공가열실(110)의 전방에는 제1진공퍼지관(118)이 마련되고, 최초로 열처리대상 물품(P)이 진공가열실(110)의 내부 중앙의 열처리 위치에 진입한 때에는 진공가열실(110)에 대한 진공퍼지가 실시된다.A first vacuum purge pipe 118 is provided in front of the vacuum heating chamber 110. When the article P is first heated to a heat treatment position in the center of the vacuum heating chamber 110, Lt; / RTI > is performed.

진공가열실(110)의 진공퍼지는 제1진공퍼지관(118)에 접속된 진공펌프를 통해 진공가열실(110)의 공기를 뽑아내어 진공가열실(110) 내부를 진공상태로 만드는 것을 의미한다.The vacuum pumping of the vacuum heating chamber 110 means to draw air in the vacuum heating chamber 110 through a vacuum pump connected to the first vacuum purge pipe 118 to make the interior of the vacuum heating chamber 110 to be in a vacuum state .

진공가열실(110)의 내부에는 다수의 수직형 히터(111)와 수평형 히터(111)가 설치되고, 진공가열실(110)의 내부 벽면에는 단열재(112)가 시공된다.A plurality of vertical heaters 111 and horizontal heaters 111 are installed in the vacuum heating chamber 110 and a heat insulating material 112 is installed on the inner wall surfaces of the vacuum heating chamber 110.

진공가열실(110)에 시공되는 단열재로는 열전도율이 낮고 축열량이 작아 노의 승온시간 단축과 에너지 효율의 향상을 도모할 수 있는 세라믹 화이버(ceramic fiber)가 바람직하다.As the heat insulating material to be applied to the vacuum heating chamber 110, a ceramic fiber is preferable because it has a low thermal conductivity and a small amount of heat accumulation to shorten the temperature rise time of the furnace and improve the energy efficiency.

진공가열실(110)의 일측에는 공정가스 공급관(113)이 설치되고, 공정가스 공급관(113)을 통해 진공퍼지된 진공가열실(110)의 내부에 공정가스인 암모니아(NH3), 질소(N2)가 공급된다.A process gas supply pipe 113 is installed on one side of the vacuum heating chamber 110 and ammonia NH 3 and nitrogen (NH 3 ), which are process gases, are introduced into the vacuum heating chamber 110, which is vacuum purged through the process gas supply pipe 113. N 2 ) are supplied.

진공가열실(110)의 내부 상부에는 공정가스의 정보를 측정하기 위한 가스센서(114)가 설치되고, 진공가열실(110)의 상단 일측에는 진공가열실(110) 내부에서 분해된 공정가스를 외부로 배출시켜 연소하기 위한 제1가스배출관(115)이 설치된다.A gas sensor 114 for measuring the information of the process gas is installed in the upper part of the vacuum heating chamber 110 and a process gas decomposed in the vacuum heating chamber 110 is introduced into one side of the upper end of the vacuum heating chamber 110 A first gas discharge pipe 115 for discharging the gas to the outside and burning the gas is installed.

본 발명의 바람직한 실시 예에 따른 침질경화 열처리장치(100)는 가스센서(114)로 진공가열실(110) 내부의 공정가스 정보를 측정한 후에 가스종류, 가스량, 가스공급속도, 투입기스 분율 등을 프로그램 조절계로 자동투입하고 유량지시 및 적산, 기록한다.The dipping hardening heat treatment apparatus 100 according to a preferred embodiment of the present invention measures the process gas information in the vacuum heating chamber 110 with the gas sensor 114 and then measures the gas type, the gas amount, the gas supply rate, Is automatically input to the program control system, and flow indication, accumulation and recording are performed.

또한, 침질경화 사이클 동안 시간에 따른 진공가열실(110)의 내부 온도, 열처리대상 제품(P)에 질소의 침입, 고용, 확산 상태에서 진공가열실(110)의 분위기가 변화하므로 진공가열실(110)의 내부로 공급되는 암모니아, 질소의 공급을 자동제어한다.Since the atmosphere of the vacuum heating chamber 110 changes with the internal temperature of the vacuum heating chamber 110, the entry of nitrogen into the product P to be heat-treated, the solid-solution state and the diffusion state, 110 and the supply of ammonia and nitrogen to the inside of the reactor.

진공가열실(110)의 상단에 설치되는 제1가스배출관(115)에는 개폐밸브(116)가 설치되고, 개폐밸브(116)의 토출측에 버너(117)가 설치된다.The first gas discharge pipe 115 installed at the upper end of the vacuum heating chamber 110 is provided with an opening and closing valve 116 and the burner 117 is provided at the discharge side of the opening and closing valve 116.

개폐밸브(116)는 진공가열실(110)을 진공퍼지할 때에 폐쇄작동되고, 공정가스 분위기에서 열처리대상 물품을 가열할 때에 개방작동된다.The opening / closing valve 116 is closed when the vacuum heating chamber 110 is vacuum purged, and is opened when heating the object to be heat-treated in a process gas atmosphere.

따라서 진공가열실(110) 내부의 열처리대상 물품(P)이 공정가스 분위기에서 가열될 때에 열분해된 공정가스 중의 일부가 제1가스배출관(115)를 통해 외부로 배출되고, 버너(117)를 통해 연소된다.Therefore, when the article P to be heat-treated in the vacuum heating chamber 110 is heated in the process gas atmosphere, a part of the pyrolyzed process gas is discharged to the outside through the first gas discharge pipe 115, Burned.

진공가열실(110)의 공정가스 분위기에서 일정시간 가열되어 열처리대상 제품(P)에 질소의 침입, 고용, 확산된 후에는 제2도아(162)와 제3도아(163)이 개방작동하여 제2출입구(152)와 제3출입구(153)가 개방되고, 제3컨베이어유니트(230) 및 제2컨베이어유니트(220), 제1컨베이어유니트(210)를 통해 열처리대상 제품(P)이 질소가 충전된 진공퍼지실(120)로 이송된다.The second door 162 and the third door 163 are operated to open after nitrogen is infiltrated into the heat treatment target product P by heating for a certain time in the process gas atmosphere of the vacuum heating chamber 110, The second doorway 152 and the third doorway 153 are opened and the product P to be heat treated through the third conveyor unit 230, the second conveyor unit 220 and the first conveyor unit 210 is nitrogen And is conveyed to the filled vacuum purge chamber 120.

진공퍼지실(120)로 이송된 열처리대상 제품(P)은 승강수단(180)을 통해 진공퍼지실(120)의 하부에 마련된 소입유조(130)로 투입되고, 소입유조(130)에 충전된 담금질유에 의해 냉각, 경화된다.The article P to be heat treated transferred to the vacuum purge chamber 120 is introduced into a vacuum oil purifier 130 provided in a lower portion of the vacuum purge chamber 120 through the lifting means 180 and is supplied to the vacuum oil purifier It is cooled and hardened by quenching oil.

소입유조(130)에 충전되는 담금질유로 광유계 열처리유 사용하는 경우 반복적인 고온의 처리품에 노출되어 열적특성 저하로 슬러지(찌꺼기)가 발생될 수 있게 된다. The quenching channel filled with the quench oil vessel 130 may be exposed to the high-temperature treatment product repeatedly used when the mineral oil-based heat treatment oil is used, so that the sludge may be generated due to the deterioration of the thermal properties.

또한 슬러지 발생 시 열처리대상 물품의 외관 불량을 야기되거나 사용수명이 저하될 수 있게 된다.In addition, when the sludge is generated, the appearance of the object to be heat-treated may be defective or the service life thereof may be deteriorated.

따라서 소입유조(130)에 충전되는 담금질유는 열에 강한 구조적 특성으로 증기막 발생을 최소화시킬 수 있는 친환경계 열처리유가 바람직하다.Therefore, the quenching oil to be filled in the quenching oil tank 130 is preferably an environment-friendly hydrothermal treatment oil capable of minimizing the generation of steam due to heat-resistant structural characteristics.

진공퍼지실(120)에서 소입유조(130)로 열처리대상 제품(P)을 승강시키는 승강수단(180)은 본 발명이 속하는 기술분야에서 자명하며, 그에 대한 구체적인 설명을 생략한다.The elevating means 180 for raising and lowering the article P to be heat-treated in the vacuum purge chamber 120 to the small oil boiler 130 is obvious in the technical field to which the present invention belongs, and a detailed description thereof will be omitted.

진공퍼지실(120)의 상단에는 제2가스배출관(125)이 마련되고, 제2가스배출관(125)은 제1가스배출관(115)을 통해 버너(117)에 접속된다.A second gas exhaust pipe 125 is provided at an upper end of the vacuum purge chamber 120 and a second gas exhaust pipe 125 is connected to the burner 117 through a first gas exhaust pipe 115.

따라서 담금질과정에서 발생하는 유증기로 인하여 진공퍼지실(120)에 압력이 상승하는 경우 유증기와 질소의 일부가 제2가스배출관(125) 및 제1가스배출관(115)을 통해 버너(117)로 배출되어 연소된다.Therefore, when the pressure in the vacuum purge chamber 120 rises due to the vapors generated during the quenching process, some of the vapor and nitrogen are discharged to the burner 117 through the second gas discharge pipe 125 and the first gas discharge pipe 115 And burned.

도 5는 동 바람직할 실시 예에 따른 침질경화 열처리장치의 진공퍼지실 및 소입유조의 종단면도이다. 5 is a longitudinal sectional view of a vacuum purge chamber and a quenching oil reservoir of the dipping hardening heat treatment apparatus according to the presently preferred embodiment.

본 발명의 바람직한 실시 예에 따른 소입유조(130)는 진공퍼지실(120)의 하부에 마련되는 담금질부(130a); 담금질부(130a)의 후방에 마련되고, 상부와 하부에 담금질부(130a)와 연결되는 연결구멍이 마련되는 순환부(130b);를 포함한다.The quenching oil vessel 130 according to the preferred embodiment of the present invention includes a quenching section 130a provided below the vacuum purge chamber 120; And a circulation part 130b provided at the rear of the quenching part 130a and provided with connection holes connected to the quenching part 130a at the upper part and the lower part.

담금질부(130a)의 내부 전방 하부에는 담금질유를 가열하는 담금질유 가열히터(131)가 설치되어 담금질유를 필요한 온도로 가열할 수 있게 된다. A quenching oil heater 131 for heating the quenching oil is installed in the inner front lower portion of the quenching section 130a to heat the quenching oil to a required temperature.

순환부(130b)의 상단에는 순환모터(132)가 설치되고, 순환부(130b)의 내부로 투입되는 순환모터축(133)에 순환팬(134)이 마련된다.A circulation motor 132 is installed at an upper end of the circulation unit 130b and a circulation fan 134 is installed at a circulation motor shaft 133 inserted into the circulation unit 130b.

순환부(130b)의 내부 하단에는 담금질유의 원활한 순환을 유도하는 경사가이드(135)가 마련된다.An inclined guide 135 for inducing a smooth circulation of the quenching oil is provided at the inner lower end of the circulation part 130b.

순환부(130b)의 순환모터(132)가 작동되면 순환팬(134)의 회전으로 순환부(130b)의 담금질유가 담금질부(130a)의 내부 하부로 이동되는 동시에 담금질부(130a)의 내부 상부의 담금질유가 순환부(130b)의 내부 상부로 이동되는 담금질유의 순환이 이루어지게 된다.When the circulation motor 132 of the circulation part 130b is operated, the circulation fan 130 moves the circulation part 130b to the lower part of the quenching part 130a and the quenching part 130a, The circulation of the quenching oil in which the quenching oil in the circulation part 130b moves to the upper part of the inside of the circulation part 130b is performed.

도면부호중 미설명부호 136은 드레인관이다.In the reference numerals, reference numeral 136 denotes a drain pipe.

소입유조(130)에서 일정시간동안 냉각, 경화된 열처리대상 물품(P)은 승강수단(180)을 통해 진공퍼지실(120)로 상승되고, 제1도아(161)가 개방작동된 후에 제1컨베이어유니트(210)를 통해 제1출입구(151)를 통해 진공퍼지실(120)의 외부로 배출된다.The article P to be heat treated to be cooled and hardened for a predetermined period of time is lifted up to the vacuum purge chamber 120 through the lifting means 180. After the first door 161 is opened, Is discharged to the outside of the vacuum purge chamber (120) through the first entrance (151) through the conveyor unit (210).

이처럼 본 발명의 바람직한 실시 예에 따른 침질경화 열처리장치(100)는 진공퍼지실(120) 및 중간실(140)을 거쳐 진공가열실(110)로 이송된 열처리대상 물품(P)을 공정가스 분위기에서 가열하여 침질한 후 진공퍼지실(120)의 하부에 마련된 소입유조(130)의 담금질유에 투입하여 냉각, 경화시킴으로써 침질경화 열처리를 수행한다.As described above, the dipping hardening heat treatment apparatus 100 according to the preferred embodiment of the present invention is configured to heat the article P to be heat treated, which is transferred to the vacuum heating chamber 110 via the vacuum purge chamber 120 and the intermediate chamber 140, And then is introduced into the quenching oil of the quenching oil tank 130 provided at the lower part of the vacuum purge chamber 120 to cool and harden the quench hardening heat treatment.

이상 본 발명자에 의해서 이루어진 발명을 상기 실시 예에 따라 구체적으로 설명하였지만, 본 발명은 상기 실시 예에 한정되는 것은 아니고 그 요지를 이탈하지 않는 범위에서 여러 가지로 변경 가능한 것은 물론이다.Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

100 : 침질경화 열처리장치
110 : 진공가열실
120 : 진공퍼지실
130 : 소입유조
140 : 중간실100: Sediment hardening heat treatment apparatus
110: vacuum heating chamber
120: Vacuum purge chamber
130: Ink inlet
140: Middle room

Claims (12)

열처리대상 제품(P)에 대한 가열 및 질화가 진행되는 진공가열실(110);
진공가열실(110)의 일측에 마련되고, 열처리대상 제품(P)이 진공가열실(110)로 투입되는 경로를 제공하는 동시에 진공가열실(110)에서 가열된 열처리대상 제품(P)이 소입유조(130)에 투입되는 경로를 제공하는 진공퍼지실(120);
진공퍼지실(120)의 하부에 마련되고, 진공가열실(110)에서 가열된 열처리대상 제품(P)을 냉각, 경화하는 소입유조(130);
진공가열실(110)과 진공퍼지실(120)의 사이 공간을 밀폐하는 중간실(140);을 포함하고,
중간실(140)의 일측과 타측에 진공가열실(110)과 진공퍼지실(120)이 분리가능하게 결합되는 침질경화 열처리장치에 있어서,
진공가열실(110)의 일측에 공정가스 공급관(113)이 설치되고, 진공가열실(110)의 내부 상부에 공정가스의 정보를 측정하기 위한 가스센서(114)가 설치되고, 진공가열실(110)의 상단 일측에 진공가열실(110) 내부에서 분해된 공정가스를 외부로 배출시켜 연소하기 위한 제1가스배출관(115)이 설치되고, 제1가스배출관(115)에 개폐밸브(116)가 설치되고, 개폐밸브(116)의 토출측에 버너(117)가 설치된 것을 특징으로 하는 침질경화 열처리장치.A vacuum heating chamber 110 for heating and nitriding the product P to be heat treated;
A path for supplying the product P to be heated to the vacuum heating chamber 110 is provided at one side of the vacuum heating chamber 110 and at the same time a product P to be heat- A vacuum purge chamber 120 for providing a path to be introduced into the oil tank 130;
A purge gas supply unit 130 provided at a lower portion of the vacuum purge chamber 120 for cooling and curing the product P heated in the vacuum chamber 110;
And an intermediate chamber (140) for sealing a space between the vacuum heating chamber (110) and the vacuum purge chamber (120)
In the dipping hardening heat treatment apparatus in which the vacuum heating chamber (110) and the vacuum purge chamber (120) are detachably coupled to one side and the other side of the intermediate chamber (140)
A process gas supply pipe 113 is installed on one side of the vacuum heating chamber 110 and a gas sensor 114 for measuring the information of the process gas is installed in the upper part of the vacuum heating chamber 110, A first gas exhaust pipe 115 for exhausting the process gas decomposed inside the vacuum heating chamber 110 to the outside and burning the exhaust gas is installed at one side of the upper end of the first gas exhaust pipe 115, And a burner (117) is installed on the discharge side of the on-off valve (116). 제1항에 있어서,
진공퍼지실(120)의 일측과 타측에 제1출입구(151)와 제2출입구(152)가 마련되고, 진공가열실(110)의 일측에 제3출입구(153)가 마련되고,
제1출입구(151)와 제2출입구(152), 그리고 제3출입구(153)에 개폐실린더(161s)(162s)(163s)를 통해 승강 개폐되는 제1도아(161), 제2도아(162), 제3도아(163)가 설치되고,
진공퍼지실(120)과 중간실(140), 진공가열실(110)에 열처리대상 물품(P)을 이송하는 컨베이어유니트(210)(220)(230)가 각각 설치된 것을 특징으로 하는 침질경화 열처리장치.The method according to claim 1,
A first entrance 151 and a second entrance 152 are provided on one side and the other side of the vacuum purge chamber 120 and a third entrance 153 is provided on one side of the vacuum heating chamber 110,
A first door 161 and a second door 162 which are lifted and lowered by opening and closing cylinders 161s, 162s and 163s to the first doorway 151 and the second doorway 152 and the third doorway 153, ) And a third door 163 are provided,
And a conveyor unit (210) (220) (230) for conveying the article (P) to be heat treated to the vacuum chamber (110) are installed in the vacuum purge chamber (120) Device. 삭제delete 삭제delete 삭제delete 제1항에 있어서,
진공가열실(110)의 내부에 다수의 수직형 히터(111)와 수평형 히터(111)가 설치되고, 진공가열실(110)의 내부 벽면에 단열재(112)가 시공된 것을 특징으로 하는 침질경화 열처리장치.The method according to claim 1,
Wherein a plurality of vertical heaters 111 and a horizontal heater 111 are provided in the vacuum heating chamber 110 and a heat insulating material 112 is applied to the inner wall surface of the vacuum heating chamber 110. [ Curing heat treatment apparatus. 제6항에 있어서,
진공가열실(110)에 시공되는 단열재(112)는 세라믹 화이버(ceramic fiber)인 것을 특징으로 하는 침질경화 열처리장치.The method according to claim 6,
Wherein the heat insulating material (112) applied to the vacuum heating chamber (110) is a ceramic fiber. 삭제delete 제1항에 있어서,
진공퍼지실(120)의 상단에 제2가스배출관(125)이 마련되고, 제2가스배출관(125)이 제1가스배출관(115)을 통해 버너(117)에 접속된 것을 특징으로 하는 침질경화 열처리장치.The method according to claim 1,
Characterized in that a second gas exhaust pipe (125) is provided at the upper end of the vacuum purge chamber (120) and a second gas exhaust pipe (125) is connected to the burner (117) through a first gas exhaust pipe (115) Heat treatment apparatus. 제1항에 있어서,
소입유조(130)는 진공퍼지실(120)의 하부에 마련되는 담금질부(130a); 담금질부(130a)의 후방에 마련되고, 상부와 하부에 담금질부(130a)와 연결되는 연결구멍이 마련되는 순환부(130b);를 포함하고,
담금질부(130a)의 내부 하부에 담금질유를 가열하는 담금질유 가열히터(131)가 설치된 것을 특징으로 하는 침질경화 열처리장치.The method according to claim 1,
The quenching oil vessel 130 includes a quenching section 130a provided at a lower portion of the vacuum purge chamber 120; And a circulation part 130b provided at the rear of the quenching part 130a and provided with connection holes connected to the quenching part 130a at the upper part and the lower part,
Wherein a quenching oil heating heater (131) for heating the quenching oil is installed in the interior lower portion of the quenching section (130a). 제10항에 있어서,
순환부(130b)의 상단에 순환모터(132)가 설치되고, 순환부(130b)의 내부로 투입되는 순환모터축(133)에 순환팬(134)이 마련된 것을 특징으로 하는 침질경화 열처리장치.11. The method of claim 10,
Wherein a circulation motor is installed at an upper end of the circulation part and a circulation fan is installed at a circulation motor shaft which is inserted into the circulation part. 제11항에 있어서,
순환부(130b)의 내부 하단에 담금질유의 원활한 순환을 유도하는 경사가이드(135)가 마련된 것을 특징으로 하는 침질경화 열처리장치.12. The method of claim 11,
And an inclination guide (135) for inducing smooth circulation of the quenching oil is provided at an inner lower end of the circulation part (130b).
KR1020160148153A 2016-11-08 2016-11-08 N-hardening heat treatment apparatus KR101831624B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118417649A (en) * 2024-05-22 2024-08-02 江苏富捷刀业有限公司 Nitriding furnace and method for manufacturing wear-resistant brazing by using nitriding furnace

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2582554B2 (en) * 1986-07-24 1997-02-19 大同特殊鋼株式会社 Method of carburizing steel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2582554B2 (en) * 1986-07-24 1997-02-19 大同特殊鋼株式会社 Method of carburizing steel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118417649A (en) * 2024-05-22 2024-08-02 江苏富捷刀业有限公司 Nitriding furnace and method for manufacturing wear-resistant brazing by using nitriding furnace

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