KR20180055924A - By processing - Google Patents

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Publication number
KR20180055924A
KR20180055924A KR1020187013679A KR20187013679A KR20180055924A KR 20180055924 A KR20180055924 A KR 20180055924A KR 1020187013679 A KR1020187013679 A KR 1020187013679A KR 20187013679 A KR20187013679 A KR 20187013679A KR 20180055924 A KR20180055924 A KR 20180055924A
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South Korea
Prior art keywords
pressure
section
side processing
pressure side
low
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KR1020187013679A
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Korean (ko)
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KR101879561B1 (en
Inventor
도시오 에가미
가츠히로 가도타니
겐스케 아다치
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쥬가이로 고교 가부시키가이샤
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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
    • 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
    • F27D7/04—Circulating atmospheres by mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Furnace Details (AREA)

Abstract

A sealing section (31) for preventing the atmospheric gas from moving through the communication section between the low pressure side processing section and the high pressure side processing section in the processing furnace, characterized in that the atmosphere gas in the communication section is supplied from the low pressure side processing section Side processing, and a suction portion for sucking the atmospheric gas at a position on the downstream side of the jetting portion, and the amount of exhausting the atmospheric gas from the sealing portion exhaust pipe is regulated by the sealing portion regulating valve And the amount of exhaust gas from the communication part exhaust pipe in the communication part on the side of the high-pressure side processing part is adjusted by the communication part adjusting valve.

Figure P1020187013679

Description

By processing

The present invention relates to a treatment furnace capable of moving steel strips between a low-pressure side treatment section and a high-pressure side treatment section via a communication section between a low-pressure side treatment section and a high- . Particularly, when the steel strip is moved through the communication portion between the low-pressure side processing portion and the high-pressure side processing portion in the process as described above, the steel strip is prevented from being damaged in the low-pressure side processing portion and the high- In particular, the atmosphere gas concentration of the high-pressure-side treatment section and the atmosphere gas concentration of the low-pressure-side treatment section remain different from each other, in particular, the atmosphere gas of the high-pressure-side treatment section is prevented from moving through the communication section.

BACKGROUND ART Conventionally, as a treatment furnace for treating a steel strip, a steel strip is moved between a low-pressure side treatment section and a high-pressure side treatment section via a communication section between a low-pressure-side treatment section and a high- Is being used.

Further, in the continuous heat treatment equipment of the steel strip, hydrogen having a high thermal conductivity is used as the atmospheric gas in the treatment section, and the concentration thereof is changed for each treatment section to adjust the temperature for heating and cooling.

In order to prevent the atmospheric gas in the low-pressure-side processing section and the high-pressure-side processing section from moving through the above-described communicating portion and fluctuating the concentration of the atmospheric gas, And a pair of sealing rollers for preventing the atmospheric gas from leaking to the communicating portion are provided and the steel strip is sandwiched between the pair of sealing rollers so that the steel strip is sandwiched between the low pressure side processing portion and the high pressure side processing portion So that it can move through the communicating portion.

However, in the case where the steel strip is moved between the pair of sealing rollers as described above, the resistance when the steel strip is damaged by the rollers fitted in the steel strip and the steel strip is moved becomes large, Or the sealing roller is worn.

Conventionally, as shown in Patent Document 1, a rectangular chamber having a rectangular path through a steel plate is formed in a small chamber in the center between two bands having different atmospheres in a furnace, It has been proposed that the gas sucked from the small chambers is ejected toward the small chamber side in both the rectangular paths and a certain amount of the sealing gas is allowed to flow in the small chambers and dispersed in a larger amount than the adjacent adjacent bands.

However, even in the case shown in Patent Document 1, when the steel strip is moved through the rectangular path between the low-pressure side processing portion and the high-pressure side processing portion in which the atmospheric gas pressure is different, The atmospheric gas in the low-pressure side processing unit and the high-pressure side processing unit flowed through this rectangular path, and it was not possible to reliably prevent the concentration of the atmospheric gas from fluctuating.

Japanese Patent Application Laid-Open No. 8-302430

The present invention relates to a treatment furnace capable of moving steel strips between a low-pressure side treatment section and a high-pressure side treatment section via a communication section between a low-pressure side treatment section and a high- The present invention has been made in view of the above problems.

According to the present invention, when the steel strip is moved through the communication portion between the low-pressure side processing portion and the high-pressure side processing portion in the process as described above, the low-tension side processing portion and the high- And the concentration of the atmospheric gas in the processing section can be prevented from fluctuating.

In order to solve the above-described problem, the treatment line according to the present invention is characterized in that the low-pressure side treatment section and the high-pressure side treatment section are connected to each other via the communication section between the low- Pressure side processing section and the high-pressure-side processing section, wherein the atmospheric gas in the low-pressure-side processing section and the high-pressure-side processing section is prevented from moving through the communication section, Pressure side processing unit to the high-pressure side processing unit, and a suction unit for sucking the atmospheric gas jetted to a position on the downstream side of the jetting unit is provided, and the suction unit is sucked by the suction unit And returning the atmospheric gas to the above-described spray portion to circulate the atmosphere gas, and at the same time, An exhaust pipe is provided and the amount of the atmospheric gas exhausted through the sealing portion exhaust pipe is adjusted by the sealing portion regulating valve and a part of the atmosphere gas in the communication portion at the side of the high pressure side processing portion is exhausted A communicating part exhaust pipe was provided and the amount of atmosphere gas exhausted through the communicating part exhaust pipe was adjusted by the communicating part adjusting valve.

In the treatment furnace of the present invention, the atmospheric gas in the above-mentioned communicating portion is supplied from the low-pressure side processing portion to the high-pressure side processing portion (the direction opposite to the flow caused by the pressure difference) Pressure side processing unit and the high-pressure side processing unit to the atmospheric gas from the low-pressure-side processing unit and the high-pressure-side processing unit, When gas is introduced into the communicating portion, the sealing portion regulating valve allows the air to flow through the sealing portion exhaust pipe during the circulation of the introduced atmospheric gas in the sealing portion, if necessary. The atmospheric gas in the high-pressure-side treatment section or the atmospheric gas in the high-pressure-side treatment section is supplied to the atmospheric gas in the high-pressure-side treatment section side of the above- When the atmospheric gas is guided, it is evacuated by the above-mentioned communicating portion adjusting valve through the above-mentioned communicating portion exhaust pipe, if necessary. By doing so, it is further suppressed that the atmospheric gas in the high-pressure-side treatment section and the atmospheric gas in the low-pressure-side treatment section move through the above-mentioned communication section.

Further, in the treatment furnace of the present invention, in order to suppress the atmospheric gas in the high-pressure-side treatment section from flowing into the communication section, the high-pressure side treatment section is provided between the communicating section and the high- It is preferable to provide a sealing member for preventing the atmospheric gas in the side processing unit from moving to the communicating part.

Further, when the above-mentioned steel strip is to be moved between the low-pressure side processing portion and the high-pressure side processing portion through the above-described communication portion, the steel strip is moved from the low-pressure side processing portion to the high-pressure side processing portion through the communication portion Or the steel strip can be moved from the high-pressure side processing portion to the low-pressure side processing portion through the communication portion. Further, in order to suppress the high-pressure atmosphere gas in the high-pressure-side processing section from moving from the communication section to the low-pressure-side processing section in accordance with the movement of the steel strip, it is preferable that the steel strip is passed through the communication section from the low- In the opposite direction of the flow).

The concentration of the atmospheric gas in the low-pressure-side processing section and the high-pressure-side processing section may be different from each other.

In the treatment furnace of the present invention, the steel strip is moved between the low-pressure side treatment section and the high-pressure side treatment section through the communication section between the low-pressure side treatment section and the high-pressure side treatment section, The steel strip is prevented from being damaged as in the conventional case in which the steel strip is sandwiched between a pair of sealing rollers and the atmosphere gas in the low pressure side treatment section and the high pressure side treatment section is passed through the communication section It is possible to reliably prevent the movement.

Therefore, even when the atmospheric gas in the low-pressure-side processing section and the gas concentration of the atmospheric gas in the high-pressure-side processing section are made different, the atmospheric gas in the low-pressure-side processing section and the high-pressure-side processing section move through the communication section, It is possible to reliably prevent the atmospheric gas in the side processing unit, the gas concentration of the atmospheric gas in the high-pressure side processing unit, and the like from changing.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a configuration for moving a steel strip between a low-pressure side processing unit and a high-pressure side processing unit through a communication unit between a low-pressure side processing unit and a high- Fig.
Fig. 2 is a schematic explanatory view showing the state of the communication portion between the low-pressure side processing portion and the high-pressure side processing portion in the processing according to the above embodiment. Fig.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a processing system according to an embodiment of the present invention; The processing according to the present invention is not limited to those shown in the following embodiments, and can be appropriately changed and modified without departing from the gist of the invention.

1, the pressure of the atmospheric gas in the low-pressure side processing section 10 is made lower than the pressure of the atmospheric gas in the high-pressure side processing section 20, Pressure side processing unit 10 and the high-pressure side processing unit 20 so that the elongated strips 1 are connected to the low-pressure side processing unit 10 and the high- Side processing unit 20, as shown in Fig.

In the process of this embodiment, the above-mentioned strip 1 is guided into the low-pressure side processing unit 10 and the conveying rollers 11 provided in the low-pressure side processing unit 10 feed the above- Pressure side processing unit 10 and the steel strip 1 is processed by the atmospheric gas in the low pressure side processing unit 10 and then the steel strip 1 is passed through the communication unit 30 to the high pressure side Pressure side processing unit 20 by the conveying roller 21 provided in the high-pressure side processing unit 20 so that the high-pressure side processing unit 20 is moved in the high-pressure side processing unit 20, And the steel strip 1 is processed by the atmospheric gas.

In the process of this embodiment, the low-pressure-side atmosphere gas supply pipe 12 for supplying the atmospheric gas is provided in the low-pressure-side processing unit 10, and the atmosphere in the low-pressure-side processing unit 10 There is provided a low-pressure-side gas exhaust pipe 13 for exhausting gas and a low-pressure-side regulating valve 13a for regulating the amount of atmospheric gas on the low-pressure side exhausted through the low-pressure-side atmosphere exhaust pipe 13 . The high-pressure-side treatment section 20 is provided with a high-pressure-side atmosphere gas supply pipe 22 for supplying an atmospheric gas and a high-pressure-side atmosphere gas exhaust pipe 22 for exhausting the atmosphere gas in the high- Side regulating valve 23a for regulating the amount of atmospheric gas on the high-pressure side for exhausting through the high-pressure-side atmosphere gas exhaust pipe 23 is provided.

In the process of this embodiment, the atmospheric gas in the low-pressure side processing section 10 is maintained at a low pressure and the hydrogen gas concentration is low. In the low-pressure side processing section 10, 1), while the atmosphere gas in the high-pressure side processing section 20 is kept at a high pressure and at a high hydrogen gas concentration, and in the high-pressure side processing section 20, Cooling.

Here, in the process of this embodiment, the atmospheric gas having a low hydrogen gas concentration at a low pressure in the low-pressure side processing section 10 and the atmospheric gas having a high hydrogen gas concentration at a high pressure in the high- The gas is moved through the communication portion 30 to prevent the atmospheric gas in the low pressure side processing portion 10 and the hydrogen gas concentration of the atmospheric gas in the high pressure side processing portion 20 from changing have.

In order to suppress the atmospheric gas in the low-pressure side processing unit 10 and the atmospheric gas in the high-pressure side processing unit 20 from moving through the communication unit 30 in this embodiment, 1 and 2, the sealing portion 31 is provided in the communication portion 30 and the atmospheric gas in the communication portion 30 is moved by the circulation fan 311 Pressure side processing section 20 to the high tension side processing section 20 via the upper and lower spraying sections 312 of the upper and lower sides of the pulley 1 and to the high tension side processing section 20 via the jetting section 312, Is sucked through a suction portion 313 composed of a perforated plate or the like provided on both upper and lower surfaces of the steel strip 1 at a position on the downstream side of the spray portion 312, The atmospheric gas in the circulating pipe 30 is circulated by the circulating fan 311 through the circulating pipe 314, And the circulation and from the section (312) and the suction unit 313. The sealing portion exhaust pipe 315 for exhausting a part of the atmospheric gas circulated in the sealing portion 31 as described above is provided and the amount of the atmospheric gas exhausted through the sealing portion exhaust pipe 315 is set to the sealing portion adjusting valve 315, (315a).

A communication part exhaust pipe 32 for exhausting part of the atmospheric gas in the communication part 30 on the side of the high pressure side processing part 20 is provided above the sealing part 31. The communication part exhaust pipe 32, So that the amount of the atmospheric gas exhausted through the communication portion adjusting valve 32a is adjusted.

In the treatment of this embodiment, the high-pressure side treatment section 20 is provided so as not to come into contact with the moving pulley 1 between the communicating section 30 and the high-pressure side treatment section 20, Contact type sealing member 33 for preventing the atmospheric gas from moving to the communication portion 30 is provided.

In the processing of this embodiment, the atmosphere gas in the communication portion 30 is circulated in the sealing portion 31 and the low-pressure side processing portion 10 and the high-pressure side processing portion 20, When the atmospheric gas is introduced into the communicating section 30, the sealing section adjusting valve 315a is adjusted during the circulation of the introduced atmospheric gas in the sealing section 31, And exhausted through the secondary exhaust pipe 315. The atmospheric gas in the high-pressure side processing section 20 and the atmospheric gas in the above-described suction section 313 (for example, When the atmosphere gas is guided from the sealing portion 31 without being sucked sufficiently, the atmosphere gas is adjusted by the above-mentioned communication portion adjusting valve 32a and exhausted through the communication portion exhaust pipe 32 do.

Since the sealing member 33 is provided between the communicating portion 30 and the high-pressure side processing portion 20 so as not to be in contact with the moving strip 1 as described above in the process of this embodiment , The atmospheric gas in the high-pressure side processing section (20) is prevented from moving to the communication section (30), and the moving strip (1) is not damaged.

Therefore, in the processing of this embodiment, the steel strip 1 is not damaged by being caught between the pair of sealing rollers as in the prior art, and in the low-pressure side processing portion 10 and the high-pressure side processing portion 20 The atmosphere gas in the high-pressure side processing section 20 is prevented from moving through the communication section 30 and the atmospheric gas in the low-pressure side processing section 10, the hydrogen gas concentration in the atmospheric gas in the high- And is surely prevented.

In the process of this embodiment, the elongated strip 1 is guided from the low-pressure side processing unit 10 to the high-pressure side processing unit 20 through the communicating unit 30. Conversely, Pressure side processing section 10 through the communication section 30 from the high-pressure-side processing section 20 as shown in FIG.

In the processing of this embodiment, the atmospheric gas in the low-pressure side processing section 10 is maintained at a low hydrogen gas concentration at a low pressure, and in the low-pressure side processing section 10, While the atmosphere gas in the high-pressure side processing section 20 is kept at a high pressure and at a high hydrogen gas concentration so that the steel strip 1 is cooled in the high-pressure side processing section 20 Pressure treatment unit 20 and the high-pressure-side treatment unit 20 are not limited to the kind of the atmospheric gas accommodated in the low-pressure-side treatment unit 10 and the high-pressure-side treatment unit 20, Is not limited to such a process.

Although the communication portion 30 between the low-pressure side processing portion 10 and the high-pressure side processing portion 20 is arranged horizontally in the processing of this embodiment, although not shown, the communication portion 30 30 may be installed vertically or inclinedly.

It should be noted that the sealing portion 31 may be provided not only one but also a plurality of continuous portions. Thus, it is possible to more reliably prevent the atmospheric gas in the low-pressure side processing portion 10 and the high-pressure side processing portion 20 from moving through the communication portion 30. [

Although the two processing sections of the low-pressure side processing section 10 and the high-pressure side processing section 20 are connected in the process of the above-described embodiment, the processing section of still another pressure is continuously connected through the sealing section 31 You can.

1: steel strip
10: Low pressure side processing section
11: Feed roller
12: Low-pressure atmosphere gas supply pipe
13: Low-pressure side atmosphere gas exhaust pipe
13a: Low pressure side adjustment valve
20: High-pressure side processing section
21: Feed roller
22: high-pressure side atmospheric gas supply pipe
23: High-pressure side atmospheric gas exhaust pipe
23a: High pressure side regulating valve
30:
31:
32: Communicating part exhaust pipe
32a: communicating part adjusting valve
33: sealing member
311: Circulating fan
312:
313:
314: circulation pipe
315: Sealing section exhaust pipe
315a: Sealing part adjustment valve

Claims (4)

Pressure side processing section and the high-pressure-side processing section through a communication section between the low-pressure-side processing section and the high-pressure-side processing section, the pressure of the atmospheric gas being different between the low- Pressure side processing unit to the high-pressure-side processing unit; and a sealing unit that prevents the atmospheric gas in the high-pressure-side processing unit from moving through the communication unit, A suction portion for sucking the atmospheric gas injected at a position downstream of the jet portion is provided and the atmosphere gas sucked by the suction portion is returned to the jet portion for circulation, A sealing portion exhaust pipe for exhausting a part of the gas is provided, and an atmosphere gas exhausted through the sealing portion exhaust pipe Pressure side treatment section is provided with a communicating section exhaust pipe for exhausting a part of the atmospheric gas in the communicating section on the side of the high-pressure side processing section, and the atmosphere gas discharged through the communicating section exhaust pipe And the amount is adjusted by the communicating portion adjusting valve. In the description of claim 1,
Wherein a sealing member is provided between the communicating section and the high-pressure-side treatment section so as not to be in contact with the steel strip and to prevent the atmosphere gas in the high-pressure-side treatment section from moving to the communicating section. In the description of claim 1 or claim 2,
Pressure side processing section through the communication section provided with the sealing section from the low-pressure side processing section to the high-pressure side processing section. In any one of claims 1 to 3,
Wherein the concentration of the atmospheric gas in the low-pressure-side processing section and the concentration of the atmospheric gas in the high-pressure-side processing section are different from each other.

KR1020187013679A 2016-06-28 2017-04-28 By processing KR101879561B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2016127366A JP6261662B2 (en) 2016-06-28 2016-06-28 Processing furnace
JPJP-P-2016-127366 2016-06-28
PCT/JP2017/016928 WO2018003277A1 (en) 2016-06-28 2017-04-28 Treatment furnace

Publications (2)

Publication Number Publication Date
KR20180055924A true KR20180055924A (en) 2018-05-25
KR101879561B1 KR101879561B1 (en) 2018-07-17

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JP (1) JP6261662B2 (en)
KR (1) KR101879561B1 (en)
WO (1) WO2018003277A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52107207A (en) * 1976-03-06 1977-09-08 Chugai Ro Kogyo Kaisha Ltd Device used to prevent furnace atmosphere from being mixed with one of different type
JPH08302430A (en) 1995-05-10 1996-11-19 Nippon Steel Corp In-furnace atmospheric gas seal method of continuous annealing furnace
JPH09125160A (en) * 1995-11-06 1997-05-13 Nippon Steel Corp Continuous heat treatment furnace of different kind atmospheric gas and continuous heat treatment

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6333957Y2 (en) * 1985-03-20 1988-09-08
JP4000612B2 (en) * 1996-12-24 2007-10-31 大同特殊鋼株式会社 Gas flow control device
JP2006307244A (en) * 2005-04-26 2006-11-09 Nippon Steel Corp Sealing unit and sealing method for cooling process in continuous heat treatment facility for steel strip
JP5565485B1 (en) * 2013-02-25 2014-08-06 Ｊｆｅスチール株式会社 Steel strip continuous annealing equipment and continuous hot dip galvanizing equipment
JP5884748B2 (en) * 2013-02-25 2016-03-15 Ｊｆｅスチール株式会社 Steel strip continuous annealing equipment and continuous hot dip galvanizing equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52107207A (en) * 1976-03-06 1977-09-08 Chugai Ro Kogyo Kaisha Ltd Device used to prevent furnace atmosphere from being mixed with one of different type
JPH08302430A (en) 1995-05-10 1996-11-19 Nippon Steel Corp In-furnace atmospheric gas seal method of continuous annealing furnace
JPH09125160A (en) * 1995-11-06 1997-05-13 Nippon Steel Corp Continuous heat treatment furnace of different kind atmospheric gas and continuous heat treatment

Also Published As

Publication number Publication date
WO2018003277A1 (en) 2018-01-04
JP6261662B2 (en) 2018-01-17
JP2018003047A (en) 2018-01-11
KR101879561B1 (en) 2018-07-17

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