KR101658875B1 - Batch Type Annealing Furnace - Google Patents

Batch Type Annealing Furnace Download PDF

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Publication number
KR101658875B1
KR101658875B1 KR1020160076514A KR20160076514A KR101658875B1 KR 101658875 B1 KR101658875 B1 KR 101658875B1 KR 1020160076514 A KR1020160076514 A KR 1020160076514A KR 20160076514 A KR20160076514 A KR 20160076514A KR 101658875 B1 KR101658875 B1 KR 101658875B1
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KR
South Korea
Prior art keywords
cover
ring
receiving plate
annealing furnace
chamber
Prior art date
Application number
KR1020160076514A
Other languages
Korean (ko)
Inventor
조재희
Original Assignee
(주) 광암스틸
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Publication date
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Priority to KR1020160076514A priority Critical patent/KR101658875B1/en
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Publication of KR101658875B1 publication Critical patent/KR101658875B1/en

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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
    • 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
    • C21D9/663—Bell-type furnaces
    • C21D9/673—Details, accessories, or equipment peculiar to bell-type furnaces
    • 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
    • F27D99/0073—Seals
    • F27D2099/0081—Joint

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  • Chemical & Material Sciences (AREA)
  • 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)
  • Furnace Details (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

The present invention relates to a batch type annealing furnace in which the sealing arrangement of the chamber is omitted and the sealing property is stably maintained through the receiving plate provided on the bottom surface of the batch annealing furnace and the cushioning material disposed therein, A pressing portion including a pressing ring provided on a rim; A receiving portion including an inner receiving plate and an outer receiving plate projecting vertically upward from a bottom surface of the annealing furnace, And a cushioning member inserted into the ring receiving portion between the inner receiving plate and the outer receiving plate. When the chamber is installed on the bottom surface, the pressure ring is disposed in the ring receiving portion and closely contacted with the cushioning material do.

Description

[0002] Batch type annealing furnace [

The present invention relates to a batch type annealing furnace, and more particularly, to a batch type annealing furnace in which a sealing arranging operation of a chamber is omitted through a receiving plate provided on a bottom surface of a batch type annealing furnace and a cushioning material disposed therein, And is easy to maintain.

Annealing is a heat treatment in which steel is heated and maintained at a suitable temperature and then slowly cooled to enhance ductility and toughness of a steel strip or wire (hereinafter, referred to as "wire"). There is a formula and a batch formula.

1, the batch type annealing furnace has a double structure in which a chamber 2 is disposed inside a vertical type cover 1. A plurality of burners 3 are provided in the cover 1 for internal heating (Not shown) on the inner wall or on the circumferential surface.

In addition, annealing is carried out by loading wires in the chamber 2, so that the heat of the burner 3 and the heating wire is prevented from directly being applied to the wire, while the air inside is circulated through the diffuser provided at the bottom So that the annealing process is performed uniformly or reducing gas such as hydrogen or nitrogen is fed to prevent oxidation of the wire.

In addition, in order to prevent the outside air that interferes with the uniform heat treatment from flowing into the chamber 2, the bottom surface of the cover 1 and the lower end of the chamber 2 is sealed. (4), and filled with sand capable of maintaining the sealability even in a high-temperature environment.

However, in the case of sand, there is a problem that the formation of the sand is not enough so that the sand is uniformly distributed within the groove 4 for each batch operation. Such a work is performed manually in a high temperature environment, If it is defective, there is a problem that the outside air flows into the chamber 2 and the heat treatment becomes poor.

Further, in the case of the electric annealing furnace, when the hot wire inside the cover 1 is broken or aged, there is a troublesome problem that the operator needs to lift the vertical cover 1 through the crane to repair the hot wire.

KR 10-0823593 B1 Apr. 14, 2008.

A problem to be solved by the present invention is to provide a batch-type annealing furnace in which the sealing and arranging operation of the cover or the lower end of the chamber required for each batch operation of the batch annealing furnace is omitted, the sealing property is stably maintained, .

According to an aspect of the present invention, there is provided a batch annealing furnace comprising: a pressurizing portion including a pressurizing ring provided at a lower edge of a chamber; A receiving portion including an inner receiving plate and an outer receiving plate projecting vertically upward from a bottom surface of the annealing furnace, And a cushioning member inserted into the ring receiving portion between the inner receiving plate and the outer receiving plate. When the chamber is installed on the bottom surface, the pressure ring is disposed in the ring receiving portion and closely contacted with the cushioning material do.

Further, the batch annealing furnace of the present invention is further characterized in that a guide plate having a downward gradient to the ring receiving portion is further provided on the upper ends of the inner receiving plate and the outer receiving plate.

The batch annealing furnace of the present invention is further characterized in that a guide portion having a V-shaped cross section and provided with a cushioning material on the ring receiving portion is further provided.

Further, the batch annealing furnace of the present invention may further comprise an opening / closing part for opening / closing an upper surface of the cover on the upper part of the cover, wherein the opening / closing part includes a pair of cover flanges respectively formed on the separation surfaces of the cover, And a plurality of cover reinforcing ribs provided on side walls of the cover.

In addition, the batch annealing furnace of the present invention includes a cover sealing flange formed at the lower end of the cover, a cover supporting rib provided between the outer circumferential surface of the cover and the cover sealing flange, and a bottom surface corresponding to the cover sealing flange And a cover sealing part made of an annular bottom cushion material is further provided.

According to the batch annealing furnace of the present invention, the sealing ring work between the chamber and the bottom surface through the pressurizing ring provided at the lower edge of the chamber, the inner receiving plate having the mutually concentric circles and the cushioning material disposed therebetween, The workability is improved.

Further, according to the batch annealing furnace of the present invention, the sealability is stably maintained even by repeated use of the cushioning material through the guide plate or the guide portion provided in the accommodating portion, so that the operational reliability of the present invention is improved.

1 is a sectional view showing a conventional batch annealing furnace.
2 is a cross-sectional view illustrating a batch annealing furnace according to the present invention.
3 is a cross-sectional view showing a part of a batch annealing furnace according to the present invention.
4 is a perspective view illustrating a case where the press ring of the batch annealing furnace according to the present invention is incompletely inserted into the cushioning material.
5 is a cross-sectional view showing a containing portion further provided with a guide plate in the batch annealing furnace according to the present invention.
6 is a cross-sectional view showing a containing portion further provided with a guide portion in a batch annealing furnace according to the present invention.
7 is a perspective view explaining an opening / closing part of a batch annealing furnace according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 2 is a cross-sectional view illustrating a batch annealing furnace according to the present invention, and Fig. 3 is a cross-sectional view showing a part of a batch annealing furnace according to the present invention.

2 and 3, the present invention includes a pressurizing portion 10 provided at the lower edge of the chamber 2, a receiving portion 20 provided on the bottom surface of the annealing furnace corresponding to the pressing portion 10, A cushioning member 30 inserted into the accommodating portion 20, an opening / closing portion 40 provided at an upper portion of the cover 1, and a cover sealing portion 50 provided at a lower portion of the cover 1, (1) and the chamber (2) are omitted, the sealing property is stably maintained even in repeated use, and the heat ray repair work on the inner wall of the cover (1) is easy.

The pressing portion 10 is in close contact with the cushioning member 30 when the chamber 2 is installed on the bottom surface of the annealing furnace so that the lower end of the chamber 2 A flange 11 formed on the lower edge of the chamber 2, a presser ring 13 provided on the bottom surface of the flange 11, and a flange 11 formed on the bottom surface of the chamber 2, And a rib 15 connecting the outer circumferential surface and the upper surface of the flange 11 to support the flange 11. The pressing ring 13 presses the cushioning member 30 by the load of the chamber 2, 2 from entering the boundary between the bottom end and the bottom surface.

The accommodating portion 20 has a structure in which the cushioning material 30 is disposed at a boundary portion between the lower end and the bottom surface of the chamber 2 and includes an inner receiving plate 21 formed concentrically with the bottom surface, And the cushioning member 30 is inserted into the ring receiving portion S between the inner receiving plate 21 and the outer receiving plate 23. [

A plurality of reinforcing ribs 25 are formed on the inner peripheral surface of the inner receiving plate 21 and the outer peripheral surface of the outer receiving plate 23 to support the inner receiving plate 21 and the outer receiving plate 23 protruding from the bottom surface. Are radially arranged to support the respective receiving plates.

Fig. 4 is a perspective view illustrating a case where the press ring of the batch annealing furnace according to the present invention is incompletely inserted into the cushioning material, Fig. 5 is a cross-sectional view showing the containing portion further having the guide plate in the batch annealing furnace according to the present invention And FIG. 6 is a cross-sectional view showing a containing portion further provided with a guide portion in the batch annealing furnace according to the present invention.

3 to 6, the cushioning member 30 is inserted into the ring receiving portion S between the inner receiving plate 21 and the outer receiving plate 23 as described above, A refractory ceramic fiber having a low thermal conductivity and excellent thermal stability is mainly used as a material for sealing the boundary between the lower end of the chamber 2 and the bottom surface.

The ceramic fabric fabricated in the form of a nonwoven fabric is cut into a predetermined width and inserted into the ring receiving portion S. As described above, .

However, when the positioning operation is repeated, the cushioning member 30 is provided with the ring groove s permanently deformed into the cushioning depression chamber by the pressing of the pressing ring 13. When the pressing ring 13 is in the state in which the ring groove s is formed, The sealing property may be deteriorated if it is provided so as to be detached from the central point of the width of the ring receiving portion S (hereinafter referred to as " fixed position ").

That is, the chamber 2 is lifted or re-installed on the floor surface through the crane in order to load or unload the wire on the floor surface for each batch operation. The chamber 2, which is suspended from the crane, It is difficult to dispose the cushion member 30 in the cushion member 30. When the cushion member 30 is detached from the fixed position C and reinstalled, s), so that outside air can be introduced through this space.

5, in order to arrange the pressure ring 13 at the correct position C for each reinstallation of the chamber 2, the upper end of the inner receiving plate 21 and the upper end of the outer receiving plate 23 The guide ring 27 is further provided with a guide plate 27 having a downward slope from the ring receiving portion S so that the press ring 13 is disposed at the fixed position C by the guide plate 27, So that it can be stably maintained.

6, the cushioning member 30 is disposed on the ring receiving portion S, and the cushioning member 30 is disposed on the ring receiving portion S. In this embodiment, And a guide portion 29 which is V-shaped can be further provided.

Particularly, in addition to the function of causing the pressure ring 13 to be disposed at the correct position C due to the restriction of the inclined surfaces, the cushioning member 30 is deformed by the pressing ring 13 in the guide part 29 (W, w ') of the back surface of the cushioning material 30 doubles the sealing property.

As shown in FIG. 7, the cover 1 is provided with an opening / closing part 40 for opening and closing the upper surface of the cover 1. In this state, when the cover 1 is lifted using a crane, It is possible to eliminate the inconvenience of the user having to go through the lower opening of the cover 1 to perform the internal maintenance work.

However, since the cover 1 repeatedly swells and shrinks at a high temperature and a normal temperature, it is required to have a sealing property so that the outside air does not flow into the inside during the annealing process. In order to firmly seal the separating surface of the cover 1, 40 comprises a plurality of cover reinforcing ribs 43 which are formed radially on the corner portion where the cover flange 41 and the outer circumferential surface of the cover 1 meet, The cover flange 41 is bolted to securely seal it.

3, outer air flows into the gap between the cover 1 and the bottom surface to lower the thermal efficiency or prevent the surface of the wire from being oxidized by oxygen contained in the outside air, A cover sealing portion 50 may be further provided.

The cover sealing portion 50 is provided between a cover sealing flange 51 formed at the lower end of the cover 1 and a cover sealing flange 51 formed between the outer circumferential surface of the cover 1 and the cover sealing flange 51 to support the cover sealing flange 51 A cover supporting rib 53 and an annular bottom cushioning member 55 provided on a bottom surface corresponding to the cover sealing flange 51.

The bottom cushioning member 55 is made of the same material as the cushioning member 30 and is sealed to the bottom surface of the cover 1 while being fixed to the floor surface by a plurality of fixing pins, (30) together with the inside of the annealing furnace.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10:
11: Flange
13: Pressurizing ring
15: rib
20:
21: Inner receiving plate
23: outer receiving plate
25: reinforcing rib
27: guide plate
29: guide portion
30: Cushioning material
40:
50: Cover sealing part

Claims (5)

A batch type annealing furnace comprising a cover (1) and a chamber (2)
A pressurizing portion 10 including a pressurizing ring 13 provided at a lower edge of the chamber 2;
A receiving portion 20 including an inner receiving plate 21 and an outer receiving plate 23 formed concentrically and protruding vertically upward from the bottom surface of the annealing furnace; And
A cushioning member 30 inserted into the ring receiving portion S between the inner receiving plate 21 and the outer receiving plate 23;
Lt; / RTI >
When the chamber 2 is installed on the floor surface, the pressure ring 13 is disposed in the ring receiving portion S so as to be in close contact with the cushioning member 30,
Wherein a guide plate (27) having a downward gradient with the ring receiving portion (S) is further provided on the upper ends of the inner receiving plate (21) and the outer receiving plate (23).
delete A batch type annealing furnace comprising a cover (1) and a chamber (2)
A pressurizing portion 10 including a pressurizing ring 13 provided at a lower edge of the chamber 2;
A receiving portion 20 including an inner receiving plate 21 and an outer receiving plate 23 formed concentrically and protruding vertically upward from the bottom surface of the annealing furnace; And
A cushioning member 30 inserted into the ring receiving portion S between the inner receiving plate 21 and the outer receiving plate 23;
Lt; / RTI >
When the chamber 2 is installed on the floor surface, the pressure ring 13 is disposed in the ring receiving portion S so as to be in close contact with the cushioning member 30,
Wherein a guide portion (29) having a V-shaped cross section and provided with a cushioning material (30) on the ring receiving portion (S) is further provided.
The method according to claim 1 or 3,
The cover 1 is further provided with an opening and closing part 40 for opening and closing an upper surface of the cover 1. The opening and closing part 40 includes a pair of cover flanges 41 And a plurality of cover reinforcing ribs (43) provided on the side wall of the cover flange (41) and the cover (1).
The method according to claim 1 or 3,
A cover sealing flange 51 formed at the lower end of the cover 1, a cover supporting rib 53 provided between the outer circumferential surface of the cover 1 and the cover sealing flange 51, And a cover sealing portion (50) comprising an annular bottom cushion material (55) provided on a corresponding bottom surface.
KR1020160076514A 2016-06-20 2016-06-20 Batch Type Annealing Furnace KR101658875B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160076514A KR101658875B1 (en) 2016-06-20 2016-06-20 Batch Type Annealing Furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160076514A KR101658875B1 (en) 2016-06-20 2016-06-20 Batch Type Annealing Furnace

Publications (1)

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KR101658875B1 true KR101658875B1 (en) 2016-09-23

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KR1020160076514A KR101658875B1 (en) 2016-06-20 2016-06-20 Batch Type Annealing Furnace

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH077320Y2 (en) * 1990-03-07 1995-02-22 新日本製鐵株式会社 Inner cover for batch annealing furnace
KR100823593B1 (en) 2001-12-22 2008-04-21 주식회사 포스코 Apparatus rotating an inner cover of a batch annealing furnace

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH077320Y2 (en) * 1990-03-07 1995-02-22 新日本製鐵株式会社 Inner cover for batch annealing furnace
KR100823593B1 (en) 2001-12-22 2008-04-21 주식회사 포스코 Apparatus rotating an inner cover of a batch annealing furnace

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