CN102203305B - Continuous annealing furnace - Google Patents
Continuous annealing furnace Download PDFInfo
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- CN102203305B CN102203305B CN2010800031669A CN201080003166A CN102203305B CN 102203305 B CN102203305 B CN 102203305B CN 2010800031669 A CN2010800031669 A CN 2010800031669A CN 201080003166 A CN201080003166 A CN 201080003166A CN 102203305 B CN102203305 B CN 102203305B
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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
- C21D9/561—Continuous furnaces for strip or wire with a controlled atmosphere or vacuum
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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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
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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
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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
- C21D9/565—Sealing arrangements
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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
- C21D9/573—Continuous furnaces for strip or wire with cooling
- C21D9/5732—Continuous furnaces for strip or wire with cooling of wires; of rods
-
- 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
- C21D9/573—Continuous furnaces for strip or wire with cooling
- C21D9/5735—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories or equipment specially adapted for furnaces of these types
- F27B9/3005—Details, accessories or equipment specially adapted for furnaces of these types arrangements for circulating gases
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
一种连续退火炉(10)，将穿过入口密封部(11)而被导入的处理件(1)在含有氢气的周围气体中从加热带(12)朝冷却带(13a)～(13c)连续地搬运，在加热带对处理件间接加热后，在冷却带使该处理件冷却退火，并将该处理件穿过出口密封部(16)导出，所述连续退火炉设有周围气体供给装置(20)、导向路(33)及周围气体控制装置(30)，其中，所述周围气体供给装置(20)朝连续退火炉内供给周围气体；所述导向路(33)将连续退火炉内的过剩的周围气体引导至加热带的燃烧部；所述周围气体控制装置(30)对将过剩的周围气体流过该导向路引导至加热带的燃烧部的情况进行控制。
A continuous annealing furnace (10) is provided, wherein a treatment piece (1) introduced through an inlet sealing portion (11) is continuously transported from a heating zone (12) toward cooling zones (13a) to (13c) in an ambient gas containing hydrogen. After the treatment piece is indirectly heated in the heating zone, the treatment piece is cooled and annealed in the cooling zone and guided out through an outlet sealing portion (16). The continuous annealing furnace is provided with an ambient gas supply device (20), a guide path (33) and an ambient gas control device (30), wherein the ambient gas supply device (20) supplies ambient gas into the continuous annealing furnace; the guide path (33) guides excess ambient gas in the continuous annealing furnace to the combustion portion of the heating zone; and the ambient gas control device (30) controls the flow of excess ambient gas through the guide path to the combustion portion of the heating zone.
Description
Technical field
The present invention relates to a kind ofly will pass the processing part that inlet seal section is imported into and carry continuously towards cooling zone from the heating zone in containing the surrounding gas of hydrogen, to processing part after the indirect heating of heating zone, make processing part after such heating in the cooling annealing of cooling zone, and the processing part after annealing pass the continuous annealing furnace that exit seal section derives.Especially, in order to replenish the surrounding gas that spills from above-mentioned inlet seal section, exit seal section, and the oxygen and the hydrogen reaction that make and process part to be directed to together in continuous annealing furnace are processed, supply with the surrounding gas that contains hydrogen in from the surrounding gas feedway towards continuous annealing furnace, it is characterized in that, the surrounding gas of the surplus in continuous annealing furnace can be suppressed to be supplied to towards the situation of outside discharge, and the hydrogen that contains in superfluous surrounding gas can be effectively utilized.
Background technology
At present, when the processing part that makes the strips such as Stainless Steel Band by the acquisition such as cold rolling is annealed in continuous annealing furnace, make the gloss on the surface of above-mentioned processing part not carry out clean annealing with damaging.
in addition, when making like this processing part clean annealing of strip in continuous annealing furnace, as shown in Figure 1, carry out following action: the processing part 1 of strip is passed inlet seal section 11 import and be filled with the surrounding gas that contains hydrogen, general with hydrogen and nitrogen in the continuous annealing furnace 10 as the surrounding gas of main component, make the heating zone 12 of this processing part 1 in continuous annealing furnace 10 by indirect heating, processing part 1 after being heated is like this guided to cooling zone 13a～13c so that it is cooling, in addition, also will process part 1 passes skewed slot 15 and guides to exit seal section 16 from the top roll chamber 14 that is provided with roller 14a, thereby should process part 1 and from the interior derivation of continuous annealing furnace 10 (for example pass this exit seal section 16, with reference to patent documentation 1, 2).
At this, in such continuous annealing furnace 10, in order to replenish the surrounding gas that spills from above-mentioned inlet seal section 11, exit seal section 16, and the oxygen that makes and process part 1 to be directed to together in continuous annealing furnace 10 processes with the hydrogen reaction that is contained in surrounding gas, and the surrounding gas that will contain hydrogen from surrounding gas feedway 20 is supplied in continuous annealing furnace 10.
In addition, when the surrounding gas that will contain hydrogen from surrounding gas feedway 20 like this is supplied to continuous annealing furnace 10 when interior, generally be directed to together the hydrogen reaction that contains in oxygen in continuous annealing furnace 10 and surrounding gas and process in order to make and to process part 1, from surrounding gas feedway 20, above-mentioned surrounding gas is supplied in continuous annealing furnace 10 superfluously.
At this, in the situation that from surrounding gas feedway 20, surrounding gas is supplied in continuous annealing furnace 10 so superfluously, because the pressure of the surrounding gas in this continuous annealing furnace 10 can rise gradually, therefore, the surrounding gas in continuous annealing furnace 10 are discharged towards the outside.Especially, in recent years, above-mentioned inlet seal section 11, exit seal section 16 is used the higher roll seal of resistance to air loss etc., and the amount of the surrounding gas that spills from inlet seal section 11, exit seal section 16 reduces, and therefore needs the amount of the surrounding gas of discharging from continuous annealing furnace 10 to be tending towards increasing.
In addition, there is following problem when like this from the interior discharge surrounding gas of continuous annealing furnace 10: do not burn in order to make the hydrogen that contains surrounding gas, need make this surrounding gas cooling or make surrounding gas dilution with air, cost raises, and the hydrogen that contains in superfluous surrounding gas becomes useless.
Patent documentation 1: Japanese patent laid-open 3-134120 communique
Patent documentation 2: Japanese patent laid-open 7-268493 communique
Summary of the invention
Invent technical problem to be solved
The present invention is to address the above problem as technical problem, its purpose is to provide a kind of and will passes the processing part that inlet seal section imports and carry continuously towards cooling zone from the heating zone in containing the surrounding gas of hydrogen, make the processing part after the heating zone is heated indirectly, make processing part after such heating in the cooling annealing of cooling zone, and the processing part after annealing pass the continuous annealing furnace that exit seal section derives.
Namely, technical problem of the present invention is: in order to replenish the surrounding gas that spills from above-mentioned inlet seal section, exit seal section, and the oxygen and the hydrogen reaction that make and process part to be directed to together in continuous annealing furnace are processed, when supplying with above-mentioned surrounding gas in from the surrounding gas feedway towards continuous annealing furnace, the energy inhibition is supplied to the surrounding gas of the surplus in continuous annealing furnace and discharges towards the outside, and can effectively utilize the hydrogen that contains in superfluous surrounding gas.
The technical scheme that the technical solution problem adopts
In order to solve the problems of the technologies described above, continuous annealing furnace of the present invention comprises: inlet seal section, this inlet seal section are used for importing the processing part of strip; The burning by burning section of heating zone, this heating zone is to processing the part indirect heating; Cooling zone, this cooling zone carries out cooling to the processing part after heating; And exit seal section, this exit seal section is used for deriving cooled processing part, carry continuously from above-mentioned heating zone towards cooling zone in containing the surrounding gas of hydrogen and anneal passing processing part that above-mentioned inlet seal section imports, and the processing part after annealing passes above-mentioned exit seal section and derives, above-mentioned continuous annealing furnace is provided with surrounding gas feedway, guideway and surrounding gas control device, wherein, above-mentioned surrounding gas feedway is supplied with above-mentioned surrounding gas in this continuous annealing furnace; Above-mentioned guideway guides to the surrounding gas of the surplus in continuous annealing furnace the burning section of above-mentioned heating zone; Above-mentioned surrounding gas control device flows through to the surrounding gas with surplus the situation that this guideway guides to the burning section of heating zone to be controlled.
At this, in this continuous annealing furnace, as to processing the above-mentioned heating zone of part indirect heating, can use the outer circumferential side in the inner tube that the processing part is passed that outer tube is set, and the heating zone of burning in the burning section between above-mentioned inner tube and outer tube is the heating zone of retort furnace formula.
In addition, when burning in the burning section between above-mentioned inner tube and outer tube, can the combustion units such as burner be set at above-mentioned outer tube.
In addition, in above-mentioned continuous annealing furnace, when the surrounding gas that utilizes the surrounding gas control device with the surplus in continuous annealing furnace flows through guideway and guides to the burning section of heating zone, in the situation that the temperature of gas is very high around, the thermotolerance of machine type etc. becomes reason, thereby make the burning section that surrounding gas is guided to the heating zone difficulty that becomes, therefore, comparatively it is desirable to, obtain to a certain extent cooling cooling zone from surrounding gas and the surrounding gas of surplus is guided to the burning section of heating zone.
In addition, when as mentioned above the surrounding gas of surplus being flow through guideway and guides to the burning section of heating zone from continuous annealing furnace, the hydrogen that contains in this surrounding gas is consumed by burning suitably in burning section, therefore, in above-mentioned surrounding gas control device, comparatively it is desirable to, in the situation that more than the temperature of burning section is in the kindling temperature of hydrogen, the surrounding gas of surplus is guided to burning section.
In addition, in above-mentioned continuous annealing furnace, comparatively it is desirable to, gas purification device, refining with guideway and return path is set, wherein, the above-mentioned gas refining plant is made with extra care surrounding gas; Above-mentionedly refining with guideway, the surrounding gas of surplus flow through above-mentioned guideway and guide to the above-mentioned gas refining plant; Above-mentioned return path makes the surrounding gas after being made with extra care by the above-mentioned gas refining plant be back to above-mentioned surrounding gas feedway.
In addition, in the continuous annealing furnace that consists of like this, in the situation that the temperature of above-mentioned burning section does not arrive the kindling temperature of hydrogen, utilize surrounding gas that above-mentioned surrounding gas control device will flow through the surplus that above-mentioned guideway is directed to guide to the gas purification device and make with extra care, and make surrounding gas after refining flow through return path to be back to the surrounding gas feedway.
The invention effect
In continuous annealing furnace of the present invention, as mentioned above owing to utilizing the surrounding gas control device surrounding gas of the surplus in continuous annealing furnace to be guided to the burning section of heating zone in the continuous annealing furnace, therefore, make the hydrogen that contains in the surrounding gas of the surplus that is directed like this coming burned in this burning section.
Consequently, in continuous annealing furnace of the present invention, the hydrogen that contains in the surrounding gas of the surplus in continuous annealing furnace is effectively used to the burning of the burning section of heating zone, and can suppress the situation that superfluous surrounding gas is discharged from towards the outside in the continuous annealing furnace, thereby need not to make this surrounding gas cooling or make surrounding gas dilution with air, also reduced cost.
In addition, in this continuous annealing furnace, as mentioned above, be provided with gas purification device, refining with guideway and return path, wherein, the above-mentioned refining surrounding gas that will flow through the surplus that guideway is directed with guideway guides to the gas purification device; Above-mentioned return path is used for making the surrounding gas after being made with extra care by the above-mentioned gas refining plant to be back to above-mentioned surrounding gas feedway, if in the situation that the temperature of burning section does not arrive the kindling temperature of hydrogen, the surrounding gas that will flow through the surplus that guideway is directed flows through and refiningly guides to the gas purification device with guideway and make with extra care, and make surrounding gas after refining flow through return path to be back to the surrounding gas feedway, even in the situation that the temperature of burning section does not arrive the kindling temperature of hydrogen, superfluous surrounding gas also can be effectively utilized.
Description of drawings
Fig. 1 means the diagrammatic illustration figure of the example of existing continuous annealing furnace.
Fig. 2 means the diagrammatic illustration figure of the continuous annealing furnace of an embodiment of the present invention.
Fig. 3 means the diagrammatic illustration figure of modification of the continuous annealing furnace of an embodiment of the present invention.
Embodiment
Below, with reference to the accompanying drawings the continuous annealing furnace of embodiment of the present invention described particularly.Continuous annealing furnace of the present invention is not limited to the annealing furnace shown in following embodiment, can carry out appropriate change in the scope that does not change invention thought.
As shown in Figure 2, in this embodiment, the processing part 1 of the strips such as Stainless Steel Band by cold rolling acquisition being passed inlet seal section 11 guides to and is filled with the surrounding gas that comprises hydrogen, general with hydrogen and nitrogen in the continuous annealing furnace 10 as the surrounding gas of main component.
At this, in above-mentioned inlet seal section 11, for the above-mentioned surrounding gas that suppress to be filled in continuous annealing furnace 10 flow out towards the outside, use roll seal 11a.
In addition, in this continuous annealing furnace 10, make as mentioned above pass processing part 1 that inlet seal section 11 is directed in heating zone 12 by indirect heating.
At this, for as mentioned above in heating zone 12 to processing part 1 indirect heating, the double pipe structure is made in this heating zone 12, make above-mentioned processing part pass in the inner tube 12a of heating zone 12 and the combustion unit 12c such as burner is set on outer tube 12b, burn thereby utilize in the burning 12d of section of this combustion unit 12c between inner tube 12a and outer tube 12b, so that pass the interior processing part 1 of inner tube 12a by indirect heating.
In addition, in this heating zone 12, the exhaust flow after burning in the above-mentioned burning 12d of section is crossed vapor pipe 12e guide to refrigerating unit 12f, and after utilizing this refrigerating unit 12f to make waste gas cooling, this waste gas is discharged from vapor pipe 12e towards the outside.
Then, processing part 1 after being heated in heating zone 12 is like this guided to the first cooling zone 13a～the 3rd cooling zone 13c successively so that this processing part 1 is cooling, and the processing part 1 after being cooled like this guides to the top roll chamber 14 that is provided with roller 14a, should process part 1 and 14 pass skewed slot 15 and guide to exit seal section 16 from the top roll chamber, making above-mentioned processing part 1 pass this exit seal section 16 derives from this continuous annealing furnace 10.
At this, in above-mentioned exit seal section 16, for the above-mentioned surrounding gas that suppress to be filled in continuous annealing furnace 10 flow out towards the outside, also use roll seal 16a.
In addition, in the continuous annealing furnace 10 of this embodiment, in order to replenish the surrounding gas that spills from above-mentioned inlet seal section 11, exit seal section 16, and the oxygen that makes and process part 1 to be directed to together in continuous annealing furnace 10 processes with the hydrogen reaction that is contained in surrounding gas, and the surrounding gas that also will contain hydrogen from surrounding gas feedway 20 is supplied in continuous annealing furnace 10 superfluously.In the continuous annealing furnace 10 of this embodiment, when the surrounding gas that will contain hydrogen from surrounding gas feedway 20 is supplied to continuous annealing furnace 10 when interior, make above-mentioned surrounding gas be supplied to the 3rd cooling zone 13c, but the position of supplying with above-mentioned surrounding gas is not limited especially.
In addition, in the continuous annealing furnace 10 of this embodiment, be provided with guide pipe 33 and be provided with surrounding gas control device 30, wherein, above-mentioned guide pipe 33 is from supplying with by surrounding gas feedway 20 the burning 12d of section that the interior surrounding gas with surplus of continuous annealing furnace 10 that superfluous surrounding gas is arranged guides to above-mentioned heating zone 12 like this, and 30 pairs of surrounding gas with surplus of above-mentioned surrounding gas control device flow through the situation that this guide pipe 33 guides to the burning 12d of section of heating zone 12 to be controlled.
At this, in above-mentioned surrounding gas control device 30, the pressure warning unit 31 that the pressure of the surrounding gas in continuous annealing furnace 10 is measured is set, and the Output pressure that makes the surrounding gas in the continuous annealing furnace 10 that is determined by this pressure warning unit 31 is to control device 32.
In addition, around in gas control equipment 30, in the surrounding gas with the surplus in continuous annealing furnace 10 guides to the above-mentioned guide pipe 33 of the burning 12d of section of heating zone 12, the first valve 33a and second valve 33b are set, and the part of the guide pipe 33 between this first valve 33a and second valve 33b is connected with the vent pipe 34 that surrounding gas is discharged towards the outside, the 3rd valve 34a is set in this vent pipe 34, thereby can utilizes above-mentioned control device 32 couples of the first valve 33a, second valve 33b and the 3rd valve 34a to control.
In addition, in the situation that more than the temperature of the burning 12d of section is in the kindling temperature of hydrogen, utilize above-mentioned control device 32 to open above-mentioned the first valve 33a and second valve 33b, on the other hand, close above-mentioned the 3rd valve 34a the surrounding gas of the surplus in continuous annealing furnace 10 is flow through the burning 12d of section that above-mentioned guide pipe 33 guides to heating zone 12, so that the pressure of the surrounding gas in the continuous annealing furnace 10 that is determined by above-mentioned pressure warning unit 31 becomes prescribed value.
And, utilize above-mentioned combustion unit 12c to make the combustion of hydrogen that contains in the surrounding gas that is directed to like this burning 12d of section, and make this surrounding gas flow through above-mentioned vapor pipe 12e together with waste gas to discharge towards the outside.
By this, can prevent that the surrounding gas that contains hydrogen in continuous annealing furnace 10 directly is expelled to the outside, and can make the hydrogen that contains in the surrounding gas of discharge effectively be used for the burning of the burning 12d of section of heating zone 12.
In addition, the temperature of the burning 12d of section of above-mentioned heating zone 12 does not arrive the kindling temperature of hydrogen and during the situation of not burning etc. in the burning 12d of section, utilize above-mentioned control device 32 to open above-mentioned the first valve 33a and the 3rd valve 34a, on the other hand, close above-mentioned second valve 33b, thereby above-mentioned surrounding gas is discharged towards the outside from vent pipe 34.
In addition, in this embodiment, for in above-mentioned heating zone 12 to processing part 1 indirect heating, make this heating zone 12 become the double pipe structure, 12b arranges the combustion unit 12c such as burner at outer tube, burn to utilize in the burning 12d of section of this combustion unit 12c between inner tube 12a and outer tube 12b, but also can be provided as at the outer circumferential side of inner tube 12a the radiator tube (not shown) of burning section, guiding contains the surrounding gas of hydrogen in the radiator tube (not shown).
In addition, in the continuous annealing furnace 10 of above-mentioned embodiment, though not shown, but also above-mentioned inlet seal section 11, the exit seal section 16 flow through can be guided to the burning 12d of section of heating zone 12 from the interior above-mentioned surrounding gas that flows out towards the outside of continuous annealing furnace 10, thereby the hydrogen that contains in this surrounding gas is burnt in the burning 12d of section.
In the continuous annealing furnace 10 of above-mentioned embodiment, the temperature of the burning 12d of section of heating zone 12 does not arrive the kindling temperature of hydrogen and in the situation of not burning etc. in the burning 12d of section, utilize above-mentioned control device 32 to open above-mentioned the first valve 33a and the 3rd valve 34a, on the other hand, close above-mentioned second valve 33b, thereby above-mentioned surrounding gas is discharged towards the outside from vent pipe 34, but owing to can effectively utilizing the surrounding gas of discharging from vent pipe 34 towards the outside, therefore, can modification as shown in Figure 3 consist of like that continuous annealing furnace 10.
In the continuous annealing furnace 10 of this modification, as shown in Figure 3, the refining above-mentioned guide pipe 33 that guides to the burning 12d of section of heating zone 12 with guide pipe 36 and surrounding gas with surplus that makes that surrounding gas with surplus guides to gas purification device 35 is connected, in this makes with extra care with guide pipe 36, the 4th valve 36a is set, and return tube 37 is set, this return tube 37 makes the surrounding gas after being made with extra care by above-mentioned gas refining plant 35 turn back to above-mentioned surrounding gas feedway 20.
At this, in the continuous annealing furnace 10 of this modification, the temperature of the burning 12d of section of heating zone 12 does not arrive the kindling temperature of hydrogen and in the situation of not burning etc. in the burning 12d of section, utilize the control device 32 of above-mentioned surrounding gas control device 30 to close above-mentioned second valve 33b and the 3rd valve 34a, on the other hand, open above-mentioned the first valve 33a and the 4th valve 36a, above-mentionedly refiningly guide to gas purification device 35 with guide pipe 36 thereby the surrounding gas of surplus is flow through.
In addition, in this gas purification device 35, the surrounding gas that is directed next surplus is carried out deoxidation treatment and processed etc. with refining surrounding gas, and make like this and to be flow through above-mentioned return tube 37 by the surrounding gas after refining and be back to above-mentioned surrounding gas feedway 20, so that the surrounding gas after refining is recycled.
By this, can further suppress the situation that the surrounding gas that contains hydrogen in continuous annealing furnace 10 is discharged from above-mentioned vent pipe 34 towards the outside, thereby can more effectively utilize surrounding gas.
Even more than the temperature of the burning 12d of section is in the kindling temperature of hydrogen, the surrounding gas of surplus is flow through the burning 12d of section that above-mentioned guide pipe 33 guides to heating zone 12 to be made in the situation of its burning, amount for the surrounding gas of the surplus of regulating the burning 12d of section that is supplied to heating zone 12, also can regulate above-mentioned the 4th valve 36a and the part of surrounding gas that is supplied to the surplus of the burning 12d of section be guided to gas purification device 35 it is made with extra care, and the surrounding gas after making this refining is back to surrounding gas feedway 20.
Nomenclature
1 processes part
10 continuous annealing furnaces
11 inlet seal sections
The 11a roll seal
12 heating zones
The 12a inner tube
The 12b outer tube
The 12c combustion unit
12d burning section
The 12e vapor pipe
The 12f refrigerating unit
13a～13c the first cooling zone～the 3rd cooling zone
14 top roll chambers
The 14a roller
15 skewed slots
16 exit seal sections
The 16a roll seal
20 surrounding gas feedwaies
30 surrounding gas control device
31 pressure warning units
32 control device
33 guide pipes
33a the first valve
The 33b second valve
34 vent pipes
34a the 3rd valve
35 gas purification devices
The 36 refining guide pipes of using
36a the 4th valve
37 return tubes
Claims (7)
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009121593 | 2009-05-20 | ||
| JP2009-121593 | 2009-05-20 | ||
| PCT/JP2009/060753 WO2010134214A1 (en) | 2009-05-20 | 2009-06-12 | Continuous annealing furnace |
| JPPCT/JP2009/060753 | 2009-06-12 | ||
| PCT/JP2010/057851 WO2010134436A1 (en) | 2009-05-20 | 2010-05-10 | Continuous annealing furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102203305A CN102203305A (en) | 2011-09-28 |
| CN102203305B true CN102203305B (en) | 2013-05-08 |
Family
ID=43125909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800031669A Expired - Fee Related CN102203305B (en) | 2009-05-20 | 2010-05-10 | Continuous annealing furnace |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2434026B1 (en) |
| JP (1) | JP4979836B2 (en) |
| CN (1) | CN102203305B (en) |
| ES (1) | ES2747953T3 (en) |
| TW (1) | TWI473884B (en) |
| WO (2) | WO2010134214A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469134B (en) * | 2013-08-14 | 2015-10-21 | 西安赛特思迈钛业有限公司 | Titanium or titanium alloy coils continuous annealer and the method for annealing of a material |
| CN104278141A (en) * | 2014-09-25 | 2015-01-14 | 合肥恒泰钢结构有限公司 | Cold-rolled steel strip continuous reduction annealing furnace |
| BR112018070349B1 (en) * | 2016-04-05 | 2021-10-19 | Nippon Steel Corporation | COOLING EQUIPMENT FOR A CONTINUOUS ANNEALING OVEN |
| CN106755797A (en) * | 2017-03-10 | 2017-05-31 | 江苏伟建工具科技有限公司 | A kind of high-speed steel convection current cools down annealing pipe |
| CN106801138A (en) * | 2017-03-10 | 2017-06-06 | 江苏伟建工具科技有限公司 | A kind of H.S.S. annealing pipe |
| JP7184473B1 (en) | 2021-10-25 | 2022-12-06 | 中外炉工業株式会社 | Continuous annealing furnace |
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| US3665343A (en) * | 1970-11-09 | 1972-05-23 | Motorola Inc | Voltage controlled multivibrator |
| JPS5133707A (en) * | 1974-09-14 | 1976-03-23 | Daido Steel Co Ltd | RONAIGASUJUNKANSHIKI SHODONRO |
| JPS62290830A (en) * | 1986-06-11 | 1987-12-17 | Nisshin Steel Co Ltd | Continuous annealing method for steel strip and annealing furnace therefor |
| JP2759354B2 (en) * | 1989-10-20 | 1998-05-28 | 日新製鋼株式会社 | Bright annealing method and apparatus for stainless steel strip |
| JP2520507B2 (en) * | 1990-07-12 | 1996-07-31 | 新日本製鐵株式会社 | Continuous bright annealing method for stainless steel strip |
| JP3356864B2 (en) * | 1994-03-31 | 2002-12-16 | 中外炉工業株式会社 | Heating zone of vertical continuous bright annealing furnace for steel strip |
| JPH11229041A (en) * | 1998-02-09 | 1999-08-24 | Daido Steel Co Ltd | Continuous heat treatment furnace |
| JP4156065B2 (en) * | 1998-02-24 | 2008-09-24 | 日新製鋼株式会社 | Continuous reducing atmosphere annealing apparatus and method for metal strip |
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2009
- 2009-06-12 WO PCT/JP2009/060753 patent/WO2010134214A1/en not_active Ceased
- 2009-06-19 TW TW98120556A patent/TWI473884B/en not_active IP Right Cessation
-
2010
- 2010-05-10 EP EP10777670.0A patent/EP2434026B1/en active Active
- 2010-05-10 CN CN2010800031669A patent/CN102203305B/en not_active Expired - Fee Related
- 2010-05-10 ES ES10777670T patent/ES2747953T3/en active Active
- 2010-05-10 JP JP2011514379A patent/JP4979836B2/en active Active
- 2010-05-10 WO PCT/JP2010/057851 patent/WO2010134436A1/en not_active Ceased
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| JP昭62-290830A 1987.12.17 |
| JP特开平11-229041A 1999.08.24 |
| JP特开昭51-33707A 1976.03.23 |
| JP特许-2520507B2 1996.05.17 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2010134436A1 (en) | 2012-11-08 |
| WO2010134214A1 (en) | 2010-11-25 |
| TW201042051A (en) | 2010-12-01 |
| EP2434026A4 (en) | 2016-09-07 |
| WO2010134436A1 (en) | 2010-11-25 |
| TWI473884B (en) | 2015-02-21 |
| CN102203305A (en) | 2011-09-28 |
| ES2747953T3 (en) | 2020-03-12 |
| EP2434026B1 (en) | 2019-07-24 |
| EP2434026A1 (en) | 2012-03-28 |
| JP4979836B2 (en) | 2012-07-18 |
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