CN1301336C - Heat-treatment furnace - Google Patents
Heat-treatment furnace Download PDFInfo
- Publication number
- CN1301336C CN1301336C CNB031493602A CN03149360A CN1301336C CN 1301336 C CN1301336 C CN 1301336C CN B031493602 A CNB031493602 A CN B031493602A CN 03149360 A CN03149360 A CN 03149360A CN 1301336 C CN1301336 C CN 1301336C
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- China
- Prior art keywords
- heating region
- heating
- region
- metal strap
- preparation
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- 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.)
- Expired - Lifetime
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 215
- 239000002184 metal Substances 0.000 claims abstract description 93
- 239000007789 gas Substances 0.000 claims abstract description 78
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000002360 preparation method Methods 0.000 claims description 57
- 239000001257 hydrogen Substances 0.000 claims description 43
- 229910052739 hydrogen Inorganic materials 0.000 claims description 43
- 230000008676 import Effects 0.000 claims description 15
- 230000001629 suppression Effects 0.000 claims description 10
- 238000007747 plating Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims 1
- 239000011261 inert gas Substances 0.000 abstract 1
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 230000005764 inhibitory process Effects 0.000 abstract 1
- 150000002431 hydrogen Chemical class 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000010301 surface-oxidation reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- C21D9/563—Rolls; Drums; Roll arrangements
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
- C23C2/0032—Apparatus specially adapted for batch coating of substrate
- C23C2/00322—Details of mechanisms for immersing or removing substrate from molten liquid bath, e.g. basket or lifting mechanism
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
- C23C2/0224—Two or more thermal pretreatments
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Furnace Details (AREA)
Abstract
The heat treatment furnace for continuously heat-treating the metal strip 1 comprises a preheating zone 11 for indirectly heating the metal strip introduced from the inlet 10 in an inert gas atmosphere, and a heating zone 17 for indirectly heating the metal strip preheated in the preheating zone, in the reducing gas atmosphere including the hydrogen gas, both of which are installed in succession, and a inhibition means 18 between the preheatingne from flowin zone and the heating zone, for inhibiting the reducing gas in the heating zog out into the preheating zone, along with making an inner pressure of the heating zone to be higher than that of the preheating zone; thus to prevent the surface of a metal strip introduced from an inlet to a preheating zone from being oxidized, and simultaneously prevent a reducing gas including a hydrogen gas in a heating zone from leaking to the outside from the inlet through the preheating zone, in a heat treatment furnace used for continuously heat-treating the metal strip.
Description
Technical field
The present invention relates to a kind of surface oxidation of in the preparation heating region that this metal strap is prepared heating, restraining metal strap, make this metal strap in heating region, carry out heat treated ideally after the reduction, and can restrain the reducing gas that contains the hydrogen in the heating region and metal strap be carried out the heat treatment furnace that continuous heat treated is used to the outside is effusive.
Background technology
In the past, when metal strap is carried out continuous heat treated, be to use various heat treatment furnaces always.
As this heat treatment furnace, can adopt the 1st heat treatment furnace and the 2nd heat treatment furnace etc., the 1st heat treatment furnace is to use straight fire that the metal strap that imports in this preparation heating region is prepared heating the preparation heating region that metal strap is arranged air etc. being sent into from introducing port import, then, preparing in heating region successive heating region, in containing the reducing gas atmosphere of hydrogen, this metal strap is carried out indirect heating and makes its annealing with this; The 2nd heat treatment furnace is in containing the reducing gas atmosphere of the hydrogen identical with heating region the metal strap indirect heating that imports the preparation heating region from introducing port to be prepared heating, then, preparing in heating region successive heating region, in containing the reducing gas atmosphere of hydrogen, this metal strap is carried out indirect heating and makes its annealing with this.
Wherein, at the straight fire of above-mentioned use the metal strap that imports the preparation heating region from introducing port is prepared the 1st heat treatment furnace of heating, import this preparation heating region even will contain the reducing gas of the hydrogen of heating region, also can make the combustion of hydrogen in the reducing gas and consume, can prevent that hydrogen from having the introducing port of metal strap to spill to the outside from importing.
But, in the 1st heat treatment furnace, carry out the preparation heating of metal strap because of using straight fire, so might make the surface oxidation of metal strap, particularly, tend to make the metal strap surface oxidation having changed the occasion of operational condition etc.
And, in case oxidation has appearred in the surface of this metal strap, in the reducing gas atmosphere of hydrogen this metal strap is carried out indirect heating and make its annealed occasion even in heating region thereafter, containing, can not be fully with this metal strap reduction, can not carry out the ideal heat treated, exist when in the importing of the metal strap after this heat treated plating tank, electroplating again, and can not obtain the galvanized problem of ideal.
On the other hand, in containing the reducing gas atmosphere of the hydrogen identical, the metal strap indirect heating that imports the preparation heating region from introducing port is prepared the 2nd heat treatment furnace of heating, as use straight fire metal strap to be prepared the oxidation to the metal strap surface is suppressed the 1st heat treatment furnace of heating with heating region.
But in the occasion of the 2nd heat treatment furnace the problem that the reducing gas of the hydrogen for preparing heating region spills to the outside by introducing port can appear containing.Particularly when the band steel to stainless metal strap and high tension steel carries out heat treated, need to increase the concentration of the hydrogen in the described reducing gas, like this, in case the reducing gas that density of hydrogen is high spills to the outside, then abnormally dangerous, and the hydrogen of high price causes more effective consumption, and production cost is increased.
Summary of the invention
The objective of the invention is to solve the above-mentioned variety of issue in metal strap being carried out the heat treatment furnace that continuous heat treated uses.
In the present invention, for the oxidation on the metal strap surface that prevents from when using straight fire that the metal strap that imports the preparation heating region from introducing port is prepared the 1st heat treatment furnace of heating, to occur, adopt the 2nd heat treatment furnace that in containing the reducing gas atmosphere of the hydrogen identical, the metal strap indirect heating that imports the preparation heating region from introducing port is prepared heating with heating region.
And, the objective of the invention is in the 2nd above-mentioned heat treatment furnace, to prevent that the reducing gas that contains hydrogen from spilling to the outside from the introducing port that imports metal strap, even the occasion that the density of hydrogen in reducing gas is high also can be used safely, and can reduce production costs.
For achieving the above object, the present invention is a kind of heat treatment furnace that metal strap is carried out continuous heat treated, wherein, be provided with to continuity preparation heating region and heating region, this preparation heating region carries out indirect heating to the metal strap that imports from introducing port in the non-active gas atmosphere, this heating region is in containing the reducing gas of hydrogen, metal strap through the preparation heating in this preparation heating region is carried out indirect heating, the interior pressure of heating region is higher than the interior pressure of described preparation heating region, and, between preparation heating region and heating region, be provided with the reducing gas effusive suppression device in the preparation heating region that can restrain in the heating region.
And, adopt heat treatment furnace of the present invention, the metal strap that in the non-active gas atmosphere preparation heating region is imported from introducing port carries out the occasion of indirect heating, the oxidation on the metal strap surface that occurs in the time of can preventing to use straight fire that metal strap is prepared heating.The result carries out indirect heating to this metal strap to make its annealed occasion in heating region contains the reducing gas atmosphere of hydrogen, this metal strap is fully reduced, and can carry out ideal and electroplate.When in this metal strap importing plating tank, electroplating, can carry out ideal and electroplate, in addition, can use various non-active gas, but consider, preferably adopt nitrogen from the cost aspect as above-mentioned non-active gas.
Again, adopt heat treatment furnace of the present invention, if make the interior pressure of heating region be higher than the interior pressure of described preparation heating region, the non-active gas that then can restrain in the preparation heating region flows in the heating region.Again, if between preparation heating region and heating region, be provided with the reducing gas effusive suppression device in the preparation heating region that to restrain in the heating region, also can restrain the reducing gas that contains the hydrogen in the heating region and flow into the preparation heating region in large quantities and spill to the outside from introducing port.Like this, even carry out occasions such as heat treated at band steel to stainless band steel and high tension steel, even the density of hydrogen in the reducing gas of heating region increases, the danger that does not also exist the high reducing gas of density of hydrogen to spill to the outside, and, the hydrogen of high price can not cause effective consumption too much, and production cost is increased.
Again, in heat treatment furnace of the present invention, if be provided with through the outlet side continuity of the metal strap of heat treated this metal strap is carried out galvanized plating tank in above-mentioned derivation, then can carry out ideal and electroplate, and the reducing gas that can prevent to contain the hydrogen in the heating region spills from the outlet side of this heat treatment furnace the metal strap after the heat treated.
Again, in heat treatment furnace of the present invention, if be filled with the cooled region of non-active gas through the outlet side setting of the metal strap of heat treated in above-mentioned derivation, force down interior pressure in this cooled region in described heating region, and be provided with reducing gas effusive the 2nd suppression device in this cooled region that to restrain in the heating region, the non-active gas that then can restrain in the cooled region flows in the heating region, also can restrain the reducing gas that contains the hydrogen in the heating region and flow in large quantities in this cooled region and from outlet side and spill to the outside.
In sum, in heat treatment furnace of the present invention, because in the preparation heating region, in the non-active gas atmosphere, the metal strap that imports from introducing port is carried out indirect heating, therefore, can restrain the oxidation on the metal strap surface that when using straight fire that metal strap is prepared heating, occurs, in heating region, in containing the reducing gas atmosphere of hydrogen, this metal strap is carried out indirect heating and make its annealed occasion, this metal strap is fully reduced, can carry out the ideal heat treated, when this metal strap importing plating tank is electroplated, can carry out ideal to metal strap and electroplate.
Again, in heat treatment furnace of the present invention, because the interior pressure of heating region is higher than the interior pressure of preparing heating region, therefore, the non-active gas that can restrain in the preparation heating region flows in the heating region.Again owing between preparation heating region and heating region, be provided with suppression device, flow out to the preparation heating region with the reducing gas of restraining in the heating region, therefore, can restrain the reducing gas that contains the hydrogen in the heating region flows into the preparation heating region in large quantities and spills to the outside from introducing port.
The result is, even after stainless band steel is carried out heat treated and the density of hydrogen in the reducing gas of occasion heating region such as plating increase, the danger that does not also exist the high reducing gas of density of hydrogen to spill to the outside, and, can ineffectually not consume the hydrogen of high price in a large number, can not increase running cost.
The simple declaration of accompanying drawing
Fig. 1 is the diagrammatic illustration figure of the heat treatment furnace of embodiments of the invention 1.
Fig. 2 is the diagrammatic illustration figure of the heat treatment furnace of embodiments of the invention 2.
Embodiment
Specify the heat treatment furnace in the embodiments of the invention with reference to the accompanying drawings.
(embodiment 1)
As shown in Figure 1, the structure of the heat treatment furnace of embodiment 1 is metal strap 1 to be imported from introducing port 10 be filled with in the preparation heating region 11 of non-active gas, in this preparation heating region 11 described metal strap 1 is prepared heating in the heating of non-active gas atmosphere indirect.
In this embodiment 1, what supply with in described preparation heating region 11 is that non-active gas from non-active gas feedway 12 is a nitrogen.Like this, in supply has the preparation heating region 11 of this non-active gas, in case carry out indirect heating by 13 pairs of metal straps 1 that import from introducing port 10 of indirect heating apparatus, then can prevent as using straight fire to carry out the surface oxidation phenomenon of the metal strap 1 of metal strap 1 preparation heating occasion appearance.
And, metal strap 1 through above-mentioned preparation heating is imported in the heating region 14 after connecting the 1st connection section 15 for preparing heating region 11 and heating region 14, in this heating region 14, in containing the reducing gas of hydrogen, carry out the indirect heating of described metal strap 1, while metal strap 1 reduction is annealed.
In this embodiment 1, in described heating region 14, supply with the reducing gas that contains hydrogen from reducing gas feedway 16, in supplying with this reducing gas heating region 14 that contains hydrogen, carry out indirect heating by 17 pairs of metal straps of indirect heating apparatus 1.
Again, as mentioned above, when the reducing gas that will contain hydrogen is supplied with in heating region 14 from reducing gas feedway 16, by control device (not shown) it is controlled, make the interior pressure of a little higher than described preparation heating region 11 of interior pressure of this heating region 14, flow in this heating region 14 to prevent the non-active gas for preparing in the heating region 11.
As being used to restrain the reducing gas effusive suppression device 18 in preparation heating region 11 that contains the hydrogen in the heating region 14, in described the 1st connection section 15 that connects preparation heating region 11 and heating region 14 with send wheel 18a vicinity to and be provided with supression member 18b.Metal strap 1 is being sent wheel 18a to and is being restrained between the member 18b and move, metal strap 1 with send wheel 18a to and supression member 18b contacts, send wheel 18a to and played the effect that stops that reducing gas therefrom flows through with supression member 18b, restrain member 18b simultaneously and send wheel 18a is arranged to stop this connection section 15 in the 1st connection section 15 that is connected preparation heating region 11 and heating region 14 passage to, the result can restrain the reducing gas that contains the hydrogen in the heating region 14 to flow in the preparation heating region 11 by the 1st connection section 15, can restrain the reducing gas that contains hydrogen and spill to the outside by introducing port 10 from preparing heating region 11 with non-active gas.
And, as mentioned above, in heating region 14, carried out after the indirect heating of metal strap 1, this metal strap 1 is by connecting the 2nd connection section 20 of heating region 14 and the 1st cooled region 19, be imported into supply with heating region 14 has in the 1st cooled region 19 of the reducing gas that contains hydrogen the samely, and in the 1st cooled region 19 described metal strap 1 is cooled off.
Secondly, this metal strap 1 is passed through to connect in the 3rd connection section 22 guiding the 2nd cooled region 21 of the 1st cooled region 19 and the 2nd cooled region 21, and in the 2nd cooled region 21, make the temperature homogenization of described metal strap 1.Then metal strap 1 is led by leading-out portion 23 and contain the plating tank 24 of electroplate liquid 24a, metal strap 1 is electroplated.
In the heat treatment furnace of present embodiment 1, as mentioned above, because the surface of metal strap 1 can oxidation in preparation heating region 11, this metal strap 1 is annealed after reducing ideally in heating region, therefore, when above-mentioned metal strap 1 is electroplated, can carry out ideal to this metal strap 1 and electroplate.
(embodiment 2)
As shown in Figure 2, the heat treatment furnace of embodiment 2 is identical with the heat treatment furnace structure of the foregoing description 1, be metal strap 1 to be imported from introducing port 10 be filled with in the preparation heating region 11 of non-active gas, in this preparation heating region 11, described metal strap 1 prepared heating in the heating of non-active gas atmosphere indirect.
And, to import in the heating region 14 by the 1st connection section 15 that is provided with described suppression device 18 through the metal strap 1 of above-mentioned preparation heating, in this heating region 14, in containing the reducing gas of hydrogen, carry out the indirect heating of described metal strap 1, while metal strap 1 reduction is annealed.
Then, the same with heating region 14, this metal strap 1 is imported supply by the 2nd connection section 20 to be had in the 1st cooled region 19 of the reducing gas that contains hydrogen, in the 1st cooled region 19 described metal strap 1 is cooled off.
In the heat treatment furnace of present embodiment 2, as mentioned above, will be filled with in the 2nd cooled region 21 of non-active gas by the 3rd connection section 22 guiding that connect the 1st cooled region 19 and the 2nd cooled region 21 at the metal strap 1 behind the 1st cooled region 19 internal cooling.And, in the 2nd cooled region 21, make the temperature homogenization of described metal strap 1.Then metal strap 1 is sent to the outside by export mouth 25.
In the heat treatment furnace of present embodiment 2, in described the 2nd cooled region 21, supplying with non-active gas from non-active gas feedway 26 is nitrogen, is controlled by control device (not shown), so that the interior pressure of the 2nd cooled region 21 is lower than the interior pressure of described the 1st cooled region 19 slightly.Like this, the non-active gas that can restrain in the 2nd cooled region 21 flows in the 1st cooled region 19 by the 3rd connection section 22, and can restrain by in described the 2nd connection section 20 inflow heating regions 14.
Again, in described the 3rd connection section 22 that connects the 1st cooled region 19 and the 2nd cooled region 21, be provided with supression member 27b, as being used to restrain reducing gas effusive the 2nd suppression device 27 in the 2nd cooled region 21 that contains the hydrogen in the 1st cooled region 19 with sending wheel 27a vicinity to.The result can restrain the reducing gas that the contains hydrogen non-active gas in the 2nd cooled region 21 to spill to the outside by described export mouth 25.
In addition, in the foregoing description 1,2, be provided with 2 cooled regions 19,21, but 2 cooled regions may not be set, 1 cooled region also can freely be set or the change of cooled region more than 2 etc. is set.
Claims (2)
1. heat treatment furnace that metal strap is carried out continuous heat treated, it is characterized in that, be provided with the preparation heating region continuously, heating region and plating tank, described preparation heating region is in the non-active gas atmosphere metal strap that imports from introducing port to be carried out indirect heating, described heating region is in containing the reducing gas of hydrogen the metal strap through the preparation heating in this preparation heating region to be carried out indirect heating, plating tank is electroplated the metal strap through heat treated in this heating region, the interior pressure of described heating region is higher than the interior pressure of described preparation heating region, and, between preparation heating region and heating region, be provided with the reducing gas effusive suppression device in the preparation heating region that can restrain in the heating region.
2. heat treatment furnace that metal strap is carried out continuous heat treated, it is characterized in that, be provided with the preparation heating region continuously, heating region and cooled region, described preparation heating region is in the non-active gas atmosphere metal strap that imports from introducing port to be carried out indirect heating, described heating region is in containing the reducing gas of hydrogen the metal strap through the preparation heating in this preparation heating region to be carried out indirect heating, be filled with the metal strap refrigerative non-active gas that makes process heat treated in this heating region at cooled region, the interior pressure of described heating region is higher than the interior pressure of described preparation heating region, and, between preparation heating region and heating region, be provided with the reducing gas effusive suppression device in the preparation heating region that to restrain in the heating region, force down interior pressure in the described cooled region, and between cooled region and heating region, be provided with reducing gas effusive the 2nd suppression device in this cooled region that to restrain in the heating region in described heating region.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002177055A JP2004018967A (en) | 2002-06-18 | 2002-06-18 | Heat treatment furnace |
| JP2002177055 | 2002-06-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1470655A CN1470655A (en) | 2004-01-28 |
| CN1301336C true CN1301336C (en) | 2007-02-21 |
Family
ID=30437004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031493602A Expired - Lifetime CN1301336C (en) | 2002-06-18 | 2003-06-17 | Heat-treatment furnace |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2004018967A (en) |
| KR (1) | KR20040002520A (en) |
| CN (1) | CN1301336C (en) |
| TW (1) | TW585926B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105074021A (en) * | 2013-02-25 | 2015-11-18 | 杰富意钢铁株式会社 | Continuous annealing device and continuous hot-dip galvanising device for steel strip |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4533002B2 (en) * | 2004-06-07 | 2010-08-25 | 中外炉工業株式会社 | Heat treatment furnace |
| JP5043587B2 (en) * | 2007-10-12 | 2012-10-10 | 中外炉工業株式会社 | Metal strip continuous heat treatment 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 |
| CN110218857B (en) * | 2019-06-24 | 2021-01-26 | 马鞍山钢铁股份有限公司 | Oxidation color strip steel annealing and decoloring device and oxidation color strip steel annealing and decoloring method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1322690A (en) * | 2001-06-12 | 2001-11-21 | 华南理工大学 | Preparation and application of high-performance concrete admixture |
-
2002
- 2002-06-18 JP JP2002177055A patent/JP2004018967A/en active Pending
-
2003
- 2003-05-26 TW TW092114113A patent/TW585926B/en not_active IP Right Cessation
- 2003-05-30 KR KR1020030034672A patent/KR20040002520A/en not_active Application Discontinuation
- 2003-06-17 CN CNB031493602A patent/CN1301336C/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1322690A (en) * | 2001-06-12 | 2001-11-21 | 华南理工大学 | Preparation and application of high-performance concrete admixture |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105074021A (en) * | 2013-02-25 | 2015-11-18 | 杰富意钢铁株式会社 | Continuous annealing device and continuous hot-dip galvanising device for steel strip |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200400269A (en) | 2004-01-01 |
| JP2004018967A (en) | 2004-01-22 |
| TW585926B (en) | 2004-05-01 |
| CN1470655A (en) | 2004-01-28 |
| KR20040002520A (en) | 2004-01-07 |
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