KR900006687B1 - Method and apparatus for heat treatment - Google Patents

Method and apparatus for heat treatment Download PDF

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KR900006687B1
KR900006687B1 KR1019870015176A KR870015176A KR900006687B1 KR 900006687 B1 KR900006687 B1 KR 900006687B1 KR 1019870015176 A KR1019870015176 A KR 1019870015176A KR 870015176 A KR870015176 A KR 870015176A KR 900006687 B1 KR900006687 B1 KR 900006687B1
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heat treatment
main body
treatment chamber
quenching
pump
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KR1019870015176A
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KR890010227A (en
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박원표
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대우중공업 주식회사
이경훈
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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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Articles (AREA)
  • Forging (AREA)

Abstract

Apparatus for quenching forgings comprises a chamber for heat treatment, a conveyor consisting of mesh belts from the top of one side to bottom of another side, a heat exchanger, a circular pump of quenching solution, injection nozzles of quenching solution assembled at end of circular tube, and a cooling pump of quenching solution.

Description

이동식 단조소입 열처리방법 및 장치Mobile Forging Hardening Heat Treatment Method and Apparatus

제1도는 본 발명의 사시도,1 is a perspective view of the present invention,

제2도는 본 발명의 평면도,2 is a plan view of the present invention,

제3도는 본 발명의 작동상태를 나타낸 A-A선 단면도,3 is a cross-sectional view taken along the line A-A showing the operating state of the present invention,

제4도는 본 발명의 B-B선 단면도.4 is a cross-sectional view taken along the line B-B of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 본체 3 : 열처리실1 body 3 heat treatment chamber

4 : 콘베이어 5 : 메쉬벨트4: Conveyor 5: Mesh Belt

12 : 소입액순환펌프 13 : 소입액순환배관12: quench liquid circulation pump 13: quench liquid circulation piping

15,16 : 소입액분사노즐 21 : 열교환기15,16: quench liquid injection nozzle 21: heat exchanger

24 : 소입액냉각펌프 25, 25a, 25b : 소입액냉각배관24: quench liquid cooling pump 25, 25a, 25b: quench liquid cooling piping

본 발명은 단조보유열을 이용한 이동식 단조소입열처리 방법 및 장치에 관한 것으로 특히 냉각성능 및 냉각속도조절이 가능한 수용성 소입액으로서, 일반소입하는 모든 형단소품을 자유자재로 단조소입할 수 있도록 하는 이동식 단조소입 열처리방법 및 장치에 관한 것이다.The present invention relates to a method and apparatus for mobile forging heat treatment using forging holding heat, in particular, as a water-soluble quenching liquid capable of adjusting cooling performance and cooling rate, and forging-free forging any type-casting parts that are commonly quenched freely. Quenching heat treatment method and apparatus.

종래에는 단조소입시 주로 오일을 사용하고 있는 바, 이는 냉각성능이 항시 동일하여 단조소입하고자 하는 제품의 재질 및 제품형상에 따라 그 적용범위가 한정되어 적용이 곤란한 실정이었다. 즉 단조소입하고자하는 제품의 재질이 저탄소강일때는 냉각성능이 빠른 오일로 소입하여야하고, 고탄소강 및 저합금간은 냉각성능이 느린 오일로써 소입하여야 하는데, 이때 단조소입하고자 하는 제품의 재질이 변동되므로서 소입액의 교체가 필요하며 제품의 형상별로 적용하기에도 상기한 바와 같은 현상을 내포하고 있는 것이며, 또한 크랙(CRACK)등 불량품 발생과 롯트(COT) 별 조건변화에 따른 문제발생시 동일한 오일성상으로 인하여 적절한 긴급조치가 불가능한 문제점이 있었다.Conventionally, oil is mainly used for forging quenching, which is difficult to apply because its cooling range is always the same, and its application range is limited depending on the material and shape of the product to be quenched. In other words, when the material of the product to be forged is low carbon steel, it must be quenched with a fast cooling performance, and between the high carbon steel and the low alloy should be quenched as oil having a slow cooling performance. It is necessary to replace the quenching liquid, and it has the same phenomena as above even when applied to the shape of the product.In addition, when the problem occurs due to defects such as cracks and changes in conditions by lot, the same oil properties Due to this, there was a problem that proper emergency measures were impossible.

본 발명은 상기한 가종래의 결점들을 해결하고자 안출된 것으로서, 단조직후의 제품자체의 보유열(850℃-1000℃)을 이용하여 냉각속도조절이 용이한 수용성 소입액을 적용하여 단조소입시 에너지절감, 원가절감, 품질향상제공액절감 및 일반소입하는 모든 형단조품을 자유자재로 단조소입할 수 있도록 하는데 그 목적이 있는 것이다.The present invention has been made to solve the above-mentioned shortcomings, by applying the water-soluble squeeze liquid easy to control the cooling rate using the heat of the product itself after the single tissue (850 ℃-1000 ℃) energy during forging quenching Its purpose is to reduce the cost, reduce the cost, reduce the amount of quality improvement, and to forge freely all the forgings.

이하, 본 발명의 장치를 설 첨부도면에 의거 상세히 설명하면 다음과 같다. 첨부도면에 있어서, 1은 본체로서 내부가 방수코팅된 열처리실(3)로 형성되고 로본체(1)의 일측상부로부터 열처리실(3) 내저부까지 약38도 정도로 경사진 콘베이어(4)가 장설되는데 이 콘베이어(4)에는 메쉬벨트(5)가 장설되며, 구동은 일측에 장설된 콘베이어모터(6)에 모터(6)의 회전속도를 감소시키도록된 감속기(7) 및 체인기어(8)에 의해 콘베이어 상부일측에 축설된 체인기어(9)와 체인(10)으로 연동되게 하였는데 속도는 0.5-2m/mm 정도로 유지한다.Hereinafter, the device of the present invention will be described in detail with reference to the accompanying drawings. In the accompanying drawings, 1 is a main body which is formed of a heat-treated coating chamber 3 which is waterproof coated therein, and a conveyor 4 which is inclined at about 38 degrees from the upper side of the main body 1 to the inner bottom of the heat treatment chamber 3 is formed. The conveyor (4) is equipped with a mesh belt (5) is installed, the driving gear reducer 7 and the chain gear (8) to reduce the rotational speed of the motor (6) in the conveyor motor (6) installed on one side The chain gear 9 and the chain 10 arranged on the upper side of the conveyor were interlocked by) to maintain a speed of about 0.5-2 m / mm.

11은 로본체(1) 일측하부에 장설된 소입액순환모터인바, 이 순환모터(11)에는 소입액순환펌프(12)가 착설되고, 상측으로는 소입액순환배관(13)이 착설되어 그 단부가 열처리실(3)내로 연장형성되어 다수의 분사공(14)을 가진 에지테이션(Agitation)용 분사노즐(15)이 착설되는 동시에, 소입액 순환배관(13)의 중간부에 직각으로 열처리실(3)저부로 연결되도록 약간 작은 지름의 순환배관을 연결하는 한편, 상기 소입액 순환배관(13)의 단부에 다수의 분사공(14a)을 가진 상향 에지테이션(Agitation)용분사노즐(16)이 착설되어 있다.11 is a quench liquid circulation motor installed at one side lower part of the main body 1, and a quench liquid circulation pump 12 is installed at the circulation motor 11, and a quench liquid circulation pipe 13 is installed at the upper side thereof. The edge portion extends into the heat treatment chamber 3 so that an agitation injection nozzle 15 having a plurality of injection holes 14 is installed, and the heat treatment is performed at right angles to the middle portion of the quench liquid circulating pipe 13. While connecting the circulation pipe of a slightly smaller diameter so as to be connected to the bottom of the seal (3), the injection nozzle for upward edge (Agitation) with a plurality of injection holes (14a) at the end of the quench liquid circulation pipe 13 ) Is installed.

21은 판대식 열교환기(용량은 40000kcal / Hr이상)로서 열처리실(3) 일측상부에 장설되는 온도감지기(22)로부터 감지된 온도에 의하여 작동되는 것이며, 상기 열교환기(21)는 냉각배관(25)에 의해 냉각펌프(24)와 연결되며, 냉각펌프(24)는 냉각배관(25a)(25b)에 의해 냉각탑(Cooling Tower, 미도시)에 연결되며 열처리실(3) 일측에는 냉각모터(23)가 냉각펌프(24)를 작동시키기 위해 설치되고, 이는 상기 냉각배관(25)(25a)(25b)과 연결되도록 구성되어 있다.21 is a plate-type heat exchanger (capacity is more than 40000 kcal / Hr) is operated by the temperature detected from the temperature sensor 22 installed on one side of the heat treatment chamber (3), the heat exchanger 21 is a cooling pipe ( 25 is connected to the cooling pump 24, the cooling pump 24 is connected to the cooling tower (Cooling Tower, not shown) by the cooling pipes (25a, 25b) and the cooling motor (1) on one side of the heat treatment chamber (3) 23 is installed to operate the cooling pump 24, which is configured to be connected to the cooling piping (25) (25a) (25b).

31은 열처리실(3)내의 소입액을 펌프(32)로써 열교환기(21)로 수송시키는 모터이다. 미설명부호 33은 히터, 34는 장입구, 35, 36은 소입액 순환배관(13)상에 설치된 조절밸브이다. 위와 같이 된 본 발명의 장치를 토대로하여 본 발명의 열처리방법과 함께 작용 및 효과를 설명하면 다음과 같다.31 is a motor for transferring the quenched liquid in the heat treatment chamber 3 to the heat exchanger 21 by the pump 32. Reference numeral 33 is a heater, 34 is a charging port, 35, 36 is a control valve installed on the quench liquid circulation pipe (13). Referring to the action and effect with the heat treatment method of the present invention based on the apparatus of the present invention as described above are as follows.

본 발명의 장치를 가동시키고 로본체(1)의 일측상부에 장설한 장입구(34)를 통하여 단조직후의 제품(단조보유열 850℃-1000℃ 정도)을 열처리실(3)로 투입시키면, 열처리실(3)에 함유된 일정량의 소입액에 의하여 열처리되면서 콘베이어(4)의 메쉬벨트(5)상에 놓여지게되고, 제품이 열처리되면서 콘베이어(4)에 의해 일측상부로 이동되며, 일정한 시간간격으로 계속 투입하면 제3도에 나타낸 바와 같이 계속적으로 열처리가 이루어져 완성된 제품을 얻을 수 있게 되는 것으로, 소입액의 순환은 열처리실(3)로부터 펌프(12) 및 소입액순환배관(13)을 통해 열처리실(3)내부상측의 에지테이션(Agitation) 분사노즐(15)로 분사되어 열처리실(3)내부 소입액이 교반되고 소입액순환배관(13)의 중간부에 열처리실(3) 저부에 장설된 분사노즐(16)을 통하여 상부로 분사되어 또한 열처리실(3) 내부 소입액 이 교반되며, 따라서 열처리의 효과를 증대시키는 동시에 품질을 균일화 할 수 있게하여 단조직후의 제품이 침적식으로 열처리되는 것이며, 열처리실(3)내부에 고인 소입액은 펌프(32)에 의해 다시 열교환기(21)를 거쳐 순환시켜 적절한 온도를 유지시키면서 열처리실(3)로 되돌아오게 되어있어 항상 일정량의 소입액이 담겨져 있는 상태에서 열처리 및 소입액의 연속적인 순환이 이루어지는 것이다.When the apparatus of the present invention is operated and the product after the monostructure (forging holding heat of about 850 ° C. to about 1000 ° C.) is introduced into the heat treatment chamber 3 through the charging hole 34 installed on the upper side of the main body 1, After being heat-treated by a certain amount of the quenching liquid contained in the heat-treatment chamber 3, it is placed on the mesh belt 5 of the conveyor 4, while the product is heat-treated, it is moved to the upper side by the conveyor 4, and for a predetermined time. If it is continuously added at intervals, as shown in FIG. 3, the heat treatment is continuously performed to obtain a finished product. The circulation of the quench liquid is pumped from the heat treatment chamber 3 and the quench liquid circulation pipe 13 The quenching liquid inside the heat treatment chamber 3 is agitated by being injected into the edge injection nozzle 15 on the inner side of the heat treatment chamber 3 through the heat treatment chamber 3. It is sprayed upward through the injection nozzle 16 installed at the bottom and The quenching liquid inside the processing chamber 3 is agitated, thereby increasing the effect of the heat treatment and uniformizing the quality so that the product after the single structure is immersed in a heat treatment method. (32) is circulated through the heat exchanger (21) again to return to the heat treatment chamber (3) while maintaining an appropriate temperature, so that a continuous circulation of the heat treatment and the quench liquid is always carried out in a state in which a certain amount of quench liquid is contained. will be.

이때 열처리실(3)내에 분사되어 교반을 한 소입액이 온도가 상승하면 온도감지기(22)에 의해 즉각 감지되어 모터(31)에 의해 펌프(32)가 작동되어 고온의 소입액을 열교환기(21)내부로 유입하여 냉각시키게되며, 적정온도로된 소입액은 다시 열처리실(3)의 저부로 들어가며, 소입액 순환펌프(12)가 작동하여 소입액이 순환배관(13)을 통하여 분사노즐(15) 및 (16)으로 분사되어 교반되는 것이다. 이때 냉각펌프(24)도 동시에 작동되어 열교환기(21)의 냉각작용을 증대시키게 된다.At this time, when the quenched liquid sprayed into the heat treatment chamber 3 and stirred is raised in temperature, it is immediately detected by the temperature sensor 22 and the pump 32 is operated by the motor 31 to heat the quenched liquid of high temperature. 21) It flows into the inside and cools, and the quenched liquid at the proper temperature enters the bottom of the heat treatment chamber 3 again, and the quenched liquid circulation pump 12 operates so that the quenched liquid is sprayed through the circulating pipe 13. It is sprayed to (15) and (16), and is stirred. At this time, the cooling pump 24 is also operated at the same time to increase the cooling action of the heat exchanger (21).

상술한 바와 같이, 본 발명은 제품의 단조보유열을 이용하여 수용성 소입액으로써 열처리 함으로써 오일피트(Oil Pit) 침적으로 행해지는 오일단조소입에 비해 냉각성능의 조절이 가능하여 제품의 재질 및 형상에 구애없이 다향하게 열처리할수 있고 열처리작업효과를 높이고 품질의 균일화를 기할 수 있으며, 작업중 제품의 품질이상 발생시 신속한 조치가 가능한 동시에 공해가 발생되지 않아 쾌적한 작업환경을 이룰수 있는 잇점이 있는 한편, 특히 종래의 오일단순소입에 비해 그 적용물량을 대폭 확대시켜 생산량의 증가 및 다른방법의 열처리원가의 50% 이상을 절감할 수 있는 유용한 것이다.As described above, the present invention is capable of controlling the cooling performance compared to the oil forging quenching performed by oil pit deposition by heat treatment with a water-soluble quenching liquid using the forging holding heat of the product. It can be heat treated variously without any concern, improve the effect of heat treatment and ensure quality uniformity, and it is possible to make a quick action in case of abnormal quality of the product during work, and to achieve a comfortable working environment because no pollution is generated, especially the conventional Compared to simple oil quenching, it is useful to greatly increase the amount of application and to save more than 50% of the production cost and other methods of heat treatment.

Claims (2)

로본체(1)는 내부가 열처리실(3)로 형성되고, 상기 로본체(1) 일측상부에서 타측저부로 메쉬벨트(5)를 착설한 콘베이어(4)를 착설하되, 상기 로본체(1) 일측에는 열교환기(21), 타측에는 소입액 순환펌프(12)를 착설하여 그 상부에 소입액순환배관(13)을 장설하고, 상기 로본체(1)의 타일측에 착설된 소입액 냉각펌프(24)에는 냉각배관(25)(25a)(25b)을 장설하되, 상기 소입액순환배관(13)의 일단이 열처리실(3) 내부에 연장형성되어 소입액 분사노즐(15),(16)이 설치되어 구성된 것을 특징으로 하는 단조소입 열처리장치.The main body (1) is formed inside the heat treatment chamber (3), and the conveyor (4) in which the mesh belt (5) is installed from one side upper part of the main body (1) to the other bottom, and the main body (1) ) A heat exchanger 21 is installed at one side, and a quench liquid circulation pump 12 is installed at the other side, a quench liquid circulation pipe 13 is installed at an upper portion thereof, and the quench liquid cooling installed at the tile side of the main body 1 is installed. Cooling pipes 25, 25a and 25b are installed in the pump 24, but one end of the quenching liquid circulation pipe 13 is formed in the heat treatment chamber 3 so that the quenching liquid injection nozzle 15, ( Forging quench heat treatment apparatus, characterized in that 16) is installed. 로본체(1)는 열처리실(3)로 형성되고, 상기 로본체(1)일측상부에서 타측저부로 메쉬벨트(5)를 착설한 콘베이어(4)를 착설하되, 상기 로본체(1) 일측에는 열교환기(21), 타측에는 소입액 순환펌프(12)를 착설하여 그 상부에 소입액 순환배관(13)를 장설하고, 상기 로본체(1)의 타일측에 착설된 소입액냉각펌프(24)에는 냉각배관(25)(25a)(25b)을 장설하되, 상기 소입액순환배관(13)의 일단이 열처리실(3)내부에 연장형성되어 소입액 분사노즐(15),(16)이 설치되어 구성된 장치를 사용하여 상기 로본체(1)의 일측상부에 착설된 장입구(34)를 통하여 연속적으로 단조직후의 제품을 열처리실(3)내로 투입하여 침적식으로 열처리된 제품을 콘베이어(4)의 메쉬벨트(5)에 의하여 연속적으로 외부로 이동시키는 것을 특징으로 하는 단조소입 열처리방법.The main body (1) is formed of a heat treatment chamber (3), and the conveyor (4) on which the mesh belt (5) is installed from one upper part of the main body (1) to the other bottom, and the main body (1) In the heat exchanger 21, the other side is installed a quench liquid circulating pump 12, a quench liquid circulating pipe 13 is installed on the upper side, and a quench liquid cooling pump installed on the tile side of the main body (1) 24, cooling pipes 25, 25a and 25b are installed, and one end of the quenching liquid circulation pipe 13 is formed inside the heat treatment chamber 3 so that the quenching liquid injection nozzles 15 and 16 are formed. Using the installed and configured device, the product after the single structure was continuously introduced into the heat treatment chamber 3 through the charging hole 34 installed on the upper side of the main body 1, and the product was heat-treated by the deposition method. The forging quenching heat treatment method characterized by moving continuously to the outside by the mesh belt (5) of (4).
KR1019870015176A 1987-12-29 1987-12-29 Method and apparatus for heat treatment KR900006687B1 (en)

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