KR20000017464U - Reinforced Structure of the Radiant Tube for a Continuous Heat-Processing - Google Patents
Reinforced Structure of the Radiant Tube for a Continuous Heat-Processing Download PDFInfo
- Publication number
- KR20000017464U KR20000017464U KR2019990002964U KR19990002964U KR20000017464U KR 20000017464 U KR20000017464 U KR 20000017464U KR 2019990002964 U KR2019990002964 U KR 2019990002964U KR 19990002964 U KR19990002964 U KR 19990002964U KR 20000017464 U KR20000017464 U KR 20000017464U
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- KR
- South Korea
- Prior art keywords
- heat
- heat dissipation
- arc
- dissipation tube
- circumferential surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 230000002787 reinforcement Effects 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 7
- 238000000137 annealing Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 7
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 1
- 238000009750 centrifugal casting Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Classifications
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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
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/562—Details
-
- 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
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0033—Heating elements or systems using burners
- F27D99/0035—Heating indirectly through a radiant surface
-
- 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
- F27D7/02—Supplying steam, vapour, gases or liquids
- F27D2007/023—Conduits
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Combustion Of Fluid Fuel (AREA)
Abstract
본 고안은 방열관 내부로 화염을 투입시켜 방열관 자체의 가열에 의한 방사열을 이용하여 냉간압연코일강판을 풀림처리하기 위한 소둔로 등의 열처리로 내부에 설치되는 것으로 사용시 호형 보강리브에 의해 방사열이 일정하게 발생되도록 하여 방사열 효과를 증대시키고, 고온에 의한 로내에서의 방열관의 휨과 균열을 보다 효과적으로 감소시킬 수 있게 한 연속식 열처리로용 방열관의 보강구조에 관한 것으로서, 원통형의 내열강으로 된 방열관(1)의 바깥둘레면에 길이방향으로 일정한 간격에 맞추어 동일한 폭과 높이로 외향 돌출된 다수의 호형 보강리브(2)가 일체로 형성되고, 방열관(1)의 바깥둘레면과 호형 보강리브(2)와의 연결부(3)가 호형으로 형성된 구성인 것이다.The present invention is installed inside a heat treatment furnace such as an annealing furnace for annealing the cold rolled coil steel sheet by using a radiant heat generated by heating the heat radiating tube itself by inserting a flame into the radiating tube itself. It is a reinforcement structure of the heat dissipation tube for continuous heat treatment furnace which is made to increase the radiant heat effect and to reduce the warpage and crack of the heat dissipation tube in the furnace due to high temperature. The outer circumferential surface of the heat dissipation tube 1 is integrally formed with a plurality of arc-shaped reinforcing ribs 2 protruding outward with the same width and height at regular intervals in the longitudinal direction, and the outer circumferential surface of the heat dissipation tube 1 and the arc The connection part 3 with the reinforcing rib 2 is formed in an arc shape.
Description
본 고안은 방열관 내부로 화염을 투입시켜 방열관 자체의 가열에 의한 방사열을 이용하여 냉간압연코일강판을 풀림처리하기 위한 소둔로 등의 열처리로 내부에 설치되는 것으로 사용시 호형 보강리브에 의해 방사열이 일정하게 발생되도록 하여 방사열 효과를 증대시키고, 고온에 의한 로내에서의 방열관의 휨과 균열을 보다 효과적으로 감소시킬 수 있게 한 연속식 열처리로용 방열관의 보강구조에 관한 것이다.The present invention is installed inside a heat treatment furnace such as an annealing furnace for annealing the cold rolled coil steel sheet by using a radiant heat generated by heating the heat radiating tube itself by inserting a flame into the radiating tube itself. The present invention relates to a reinforcing structure of a heat dissipation tube for a continuous heat treatment furnace, which is made to be constantly generated to increase the radiant heat effect and to more effectively reduce the warpage and crack of the heat dissipation tube in a furnace due to high temperature.
일반적으로 냉간압연코일강판을 풀림처리시 소둔로내의 분위기를 무산화 분위기로 하여야 하므로 로내에 직접 가열방식을 피하고, 로내에 방열관를 연결 설치한 후 방열관 내부로 화염을 투입시켜 방열관 자체의 가열에 의해 발생되는 방사열을 이용하는 간접 가열방식을 채택하여 사용한다.In general, when the cold rolled coil steel sheet is unannealed, the atmosphere inside the annealing furnace should be anodized. Therefore, avoid the direct heating method in the furnace, install the heat pipe in the furnace, and inject the flame into the heat pipe to heat the heat pipe itself. It adopts indirect heating method using radiant heat generated by.
종래에는 상기와 같은 간접 가열방식에 의해 냉간압연코일강판을 풀림처리하기 위하여 연속식 열처리로 내부에 일반적으로 파이프 형태의 내열강으로 원심주조된 원통형 방열관을 사용해 왔으나, 이러한 구조의 방열관은 고온에서 사용시 변형폭이 크게 발생되어 기계적 성질을 현저하게 저하시키게 되므로서, 방열관의 휨, 균열 등에 의해 변형이 발생되어 고가로 된 방열관의 수명을 단축시킬뿐만 아니라 방사열이 일정하게 발생되지 않아 방사열 효과를 감소시키게 되므로서, 풀림처리되는 냉간압연코일강판의 품질을 저하시켜서 제품의 신뢰성 및 안정성이 문제시 되고, 보수교체 및 신제품으로 교체하는데 따른 생산시간 지연으로 생산량을 감소시켜 제품에 대한 제조원가를 상승시키는 문제점이 있었다.Conventionally, in order to anneal the cold rolled coil steel sheet by the indirect heating method as described above, a cylindrical heat dissipation tube which is generally centrifugally cast into a heat-resistant steel in the form of a pipe in a continuous heat treatment furnace has been used. In use, the deformation width is greatly generated and the mechanical properties are significantly lowered. Therefore, the deformation occurs due to the bending, cracking, etc. of the heat dissipation tube, which shortens the lifespan of the expensive heat dissipation tube. This reduces the quality of the cold rolled coil steel that is being annealed, thereby reducing the quality and reliability of the product, and increasing the manufacturing cost of the product by reducing the production volume due to delays in production time due to maintenance replacement and replacement of new products. There was a problem letting.
본 고안은 상기와 같은 문제점을 해소하기 위해 안출한 것으로서, 원통형의 내열강으로 된 방열관의 바깥둘레면에 변형과 휨 그리고 크랙을 방지하고, 방사열 효과를 증대시키기 위하여 길이방향으로 일정한 간격에 맞추어 동일한 폭과 높이로 외향 돌출되게 다수의 호형 보강리브를 일체로 형성시키고, 방열관의 바깥둘레면과 호형 보강리브와의 연결부에 응력발생을 최소화하여 균열을 방지하기 위해 연결부를 호형으로 형성시킨 것으로서, 다수의 호형 보강리브에 의해 사용시 방사열이 일정하게 발생되도록 하여 방사열 효과를 증대시키고, 크리이프(Creep) 강도 및 내구성 등의 기계적 성질을 향상시켜서 사용중에 고온에서 발생되는 로내에서의 방열관의 휨과 균열을 보다 효과적으로 감소시킬 수 있도록 구성된 것이다.The present invention was devised to solve the above problems, and to prevent deformation, warpage and cracks on the outer circumferential surface of the heat-resistant tube made of cylindrical heat-resistant steel, and to increase the radiant heat effect in the same lengthwise direction at regular intervals. A plurality of arc-shaped reinforcement ribs are integrally formed to protrude outward in width and height, and the connection part is formed in an arc shape to prevent cracks by minimizing the occurrence of stress in the connection portion between the outer circumferential surface of the heat dissipation tube and the arc-reinforced ribs. The use of a large number of arc-shaped reinforcing ribs ensures that radiant heat is generated consistently, increasing the radiant heat effect, and improving the mechanical properties such as creep strength and durability. It is configured to reduce the more effectively.
도 1 은 본 고안의 구성을 보인 횡단면도,1 is a cross-sectional view showing the configuration of the present invention,
도 2 는 본 고안의 호형 보강리브의 측면부 확대 단면도,2 is an enlarged cross-sectional side view of the arc-shaped reinforcement rib of the present invention,
도 3 은 본 고안의 실시에 따른 사용상태 예시도.Figure 3 is an exemplary state of use according to the practice of the present invention.
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
1 : 방열관 2 : 호형 보강리브1: heat dissipation pipe 2: arc shaped reinforcement rib
3 : 연결부3: connection
이하, 첨부된 도면에 의거 본 고안을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 고안의 구성을 보인 횡단면도이고, 도 2는 본 고안의 호형 보강리브의 측면부 확대 단면도이며, 도 3은 본 고안의 실시에 따른 사용상태 예시도이다. 도 1과 도 2 및 도 3에서 1은 방열관이고, 2는 호형 보강리브이며, 3은 도 2에서 상세하게 나타낸 연결부이고, 4는 방열관(1) 내부로 화염을 투입시키는 버너이다.1 is a cross-sectional view showing the configuration of the present invention, Figure 2 is an enlarged cross-sectional view of the side portion of the arc-shaped reinforcement ribs of the present invention, Figure 3 is an exemplary view showing the use state according to the implementation of the present invention. 1 and 2 and 3, 1 is a heat dissipation tube, 2 is an arc-shaped reinforcement rib, 3 is a connection part shown in detail in FIG. 2, and 4 is a burner for injecting flame into the heat dissipation tube 1.
원통형의 내열강으로 된 방열관(1)의 바깥둘레면에 길이방향으로 일정한 간격에 맞추어 동일한 폭과 높이로 외향 돌출된 다수의 호형 보강리브(2)가 일체로 형성되고, 상기 방열관(1)의 바깥둘레면과 호형 보강리브(2)와의 연결부(3)가 호형으로 형성된 구성이다.On the outer circumferential surface of the heat dissipation tube 1 of cylindrical heat-resistant steel, a plurality of arc-shaped reinforcement ribs 2 which protrude outward at the same width and height at regular intervals in the longitudinal direction are integrally formed, and the heat dissipation tube 1 The connection portion 3 between the outer circumferential surface and the arc-shaped reinforcement rib 2 is formed in an arc shape.
또한, 본 고안은 방열관(1)의 바깥둘레면에 다수개가 일체로 형성되는 보강리브의 형태는 호형에만 국한되는 것은 아니며, 삼각형, 사각형, 사다리꼴형 등으로 형성하여 구성할 수도 있는 것이다.In addition, the present invention is not limited to the arc-shaped reinforcement ribs are integrally formed on the outer circumferential surface of the heat dissipation tube 1, it may be configured by forming in a triangle, square, trapezoidal shape or the like.
이와 같은 구성의 본 고안은 다수의 호형 보강리브(2)에 의해 사용시 방사열이 일정하게 발생되도록 하여 방사열 효과를 증대시키고, 원통형의 내열강으로 된 방열관(1)은 바깥둘레면에 형성된 다수의 호형 보강리브(2)에 의해 크리이프 강도 및 내구성 등의 기계적 성질을 향상시켜서 사용중에 특히 버너(4) 입구측에 고온에서 발생되는 로내에서의 방열관(1)의 휨과 균열을 보다 효과적으로 감소시킬 수 있으며, 방열관(1)의 바깥둘레면과 호형 보강리브(2)와의 연결부(3)가 호형으로 형성되어 있으므로 연결부(3)에 집중적으로 발생되는 응력발생을 최소화하여 방열관(1)에 균열이 발생되는 것을 방지할 수가 있는 것이다.The present invention of such a configuration increases the radiant heat effect by using a plurality of arc-shaped reinforcing ribs 2 so that radiant heat is constantly generated, and the heat-radiating tube 1 made of cylindrical heat-resistant steel has a plurality of arcs formed on the outer circumferential surface thereof. The reinforcing ribs 2 improve the mechanical properties such as creep strength and durability, so that the warpage and cracks of the heat dissipating pipes 1 in the furnace generated at high temperatures, especially at the inlet side of the burner 4, can be more effectively reduced during use. Since the connection portion 3 between the outer circumferential surface of the heat dissipation tube 1 and the arc-shaped reinforcement ribs 2 is formed in an arc shape, the crack in the heat dissipation tube 1 is minimized by minimizing the stress generated in the connection portion 3. This can be prevented from occurring.
상기와 같이 구성된 본 고안은 원심주조법에 의하여 제작되며, 주로 제철소의 공업로와 금속 열처리로의 내부에 부설되어 사용되는 부품으로 소둔로뿐만 아니라 간접 가열방식에 의한 가열, 열처리 등에 적용시켜 사용할 수 있고, 고온에서 방사열을 일정하게 발생시켜 주므로서, 방사열 효과를 증대시켜 제품의 품질을 향상시킬 수 있으며, 크리이프 강도 및 기계적 성질을 향상시켜 방열관의 휨과 균열을 감소시켜 주므로서, 방열관의 수명이 장구하여 제품의 제조원가 절감 및 생산량을 증가시킬 수 있는 유용한 효과가 제공되는 것이다.The present invention constructed as described above is manufactured by the centrifugal casting method, and is mainly used in the industrial furnace and the metal heat treatment furnace of steelworks, and is used as an annealing furnace as well as an annealing furnace. In addition, it generates radiant heat at a high temperature, improves radiant heat effect, and improves product quality, and improves creep strength and mechanical properties to reduce warpage and cracks of radiant heat pipes. This equipment provides a useful effect of reducing the manufacturing cost of the product and increasing the yield.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019990002964U KR20000017464U (en) | 1999-02-26 | 1999-02-26 | Reinforced Structure of the Radiant Tube for a Continuous Heat-Processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019990002964U KR20000017464U (en) | 1999-02-26 | 1999-02-26 | Reinforced Structure of the Radiant Tube for a Continuous Heat-Processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20000017464U true KR20000017464U (en) | 2000-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019990002964U Ceased KR20000017464U (en) | 1999-02-26 | 1999-02-26 | Reinforced Structure of the Radiant Tube for a Continuous Heat-Processing |
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| Country | Link |
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| KR (1) | KR20000017464U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101491751B1 (en) * | 2012-12-28 | 2015-02-11 | 주식회사 포스코 | Heating element for annealing furnace |
| US20230046285A1 (en) * | 2019-12-17 | 2023-02-16 | Posco | Radiant tube apparatus and method for manufacturing same |
-
1999
- 1999-02-26 KR KR2019990002964U patent/KR20000017464U/en not_active Ceased
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101491751B1 (en) * | 2012-12-28 | 2015-02-11 | 주식회사 포스코 | Heating element for annealing furnace |
| US20230046285A1 (en) * | 2019-12-17 | 2023-02-16 | Posco | Radiant tube apparatus and method for manufacturing same |
| US12281371B2 (en) * | 2019-12-17 | 2025-04-22 | Posco | Radiant tube apparatus and method for manufacturing same |
| EP4079876B1 (en) * | 2019-12-17 | 2025-09-10 | Posco | Radiant tube apparatus and method for manufacturing same |
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