CN114438289A - Steel band annealing system - Google Patents
Steel band annealing system Download PDFInfo
- Publication number
- CN114438289A CN114438289A CN202210155543.5A CN202210155543A CN114438289A CN 114438289 A CN114438289 A CN 114438289A CN 202210155543 A CN202210155543 A CN 202210155543A CN 114438289 A CN114438289 A CN 114438289A
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- steel strip
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- preheating
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 73
- 239000010959 steel Substances 0.000 title claims abstract description 73
- 238000000137 annealing Methods 0.000 title claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims abstract description 46
- 238000001816 cooling Methods 0.000 claims abstract description 45
- 239000000112 cooling gas Substances 0.000 claims abstract description 14
- 238000010583 slow cooling Methods 0.000 claims abstract description 13
- 239000000498 cooling water Substances 0.000 claims abstract description 6
- 239000002912 waste gas Substances 0.000 claims abstract description 6
- 238000004321 preservation Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 24
- 239000007789 gas Substances 0.000 claims description 20
- 238000002485 combustion reaction Methods 0.000 claims description 16
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 5
- 229910021529 ammonia Inorganic materials 0.000 claims description 5
- 238000000354 decomposition reaction Methods 0.000 claims description 5
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 10
- 210000002268 wool Anatomy 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 239000000872 buffer Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000005482 strain hardening Methods 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
- C21D11/00—Process control or regulation for heat treatments
-
- 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
- C21D1/26—Methods of annealing
-
- 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
- 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
- C21D9/5737—Rolls; Drums; Roll arrangements
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C2100/00—Exhaust gas
- C21C2100/06—Energy from waste gas used in other processes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention discloses a steel strip annealing system, which comprises a preheating device, a heating device and a cooling device which are sequentially arranged, wherein the preheating device is used for preheating a steel strip and has a double-layer structure, a first layer of the preheating device is introduced into the steel strip, and a second layer of the preheating device is introduced into combusted waste gas; the heating device is used for annealing the steel strip and comprises 2 heating furnaces, wherein the 2 heating furnaces are connected by adopting heat-preservation connectors, and each heating furnace is provided with 4 temperature control areas; the cooling device is used for cooling the steel strip and comprises a slow cooling section and a fast cooling section, wherein the slow cooling section is cooled by a cooling water jacket, and the fast cooling section is cooled by cooling gas. The steel strip annealing system provided by the invention can ensure the accuracy and stability in the steel strip annealing process, and meanwhile, the energy consumption is reduced, and the production quality of the steel strip is improved.
Description
Technical Field
The invention relates to the field of heat treatment, in particular to a steel strip annealing system.
Background
The stainless steel strip needs to be annealed in the production process, and in the production application, the continuous annealing enables deformed grains to be transformed into uniform equiaxial grains again, simultaneously, the work hardening and residual internal stress are eliminated, and the structure and the performance of the steel are recovered to the heat treatment process of the state before cold deformation. However, the existing steel strip annealing system has the defects of unstable temperature, inaccuracy, high energy consumption and the like, and the production quality of the steel strip is influenced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a steel strip annealing system which can ensure the accuracy and stability in the steel strip annealing process, reduce the energy consumption and improve the production quality of the steel strip.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a steel strip annealing system comprises a preheating device, a heating device and a cooling device which are sequentially arranged, wherein the preheating device is used for preheating a steel strip and has a double-layer structure, a first layer of the preheating device is introduced into the steel strip, and a second layer of the preheating device is introduced into combusted waste gas; the heating device is used for annealing the steel strip and comprises 2 heating furnaces, wherein the 2 heating furnaces are connected by adopting heat-preservation connectors, and each heating furnace is provided with 4 temperature control areas; the cooling device is used for cooling the steel strip and comprises a slow cooling section and a fast cooling section, wherein the slow cooling section is cooled by a cooling water jacket, and the fast cooling section is cooled by cooling gas.
According to the steel strip annealing system provided by the embodiment of the invention, at least the following beneficial effects are achieved: the preheating device is arranged, so that a buffering effect can be achieved, the temperature of the preheating device is not very high due to the fact that the steel strip continuously enters, sealing difficulty at an inlet can be reduced, heat loss can be reduced, meanwhile, the preheating device is of a double-layer structure, and the second layer is used for preheating the steel strip through combusted waste gas, so that energy consumption can be saved; the heating device is provided with 2 heating furnaces, and each heating furnace is provided with 4 temperature control areas, so that the temperature can be controlled conveniently, and the 2 heating furnaces are connected by adopting a heat-insulation connector to prevent heat loss; the cooling device is provided with the slow cooling section as a transition section of the heating furnace and the fast cooling section, the process requirement of the steel belt is mainly met, the cooling speed of the steel belt is buffered, the process is flexibly adjusted, the slow cooling section is cooled by the cooling water jacket, the structure is simple, the control is easy, and the fast cooling section is cooled by cooling gas to obtain a faster cooling speed and improve the product quality.
According to some embodiments of the invention, a front sealing device is arranged in front of the preheating device, a rear sealing device is arranged behind the cooling device, and the front sealing device and the rear sealing device are both roller-sealed by wool felt.
The beneficial results are: the front sealing device and the rear sealing device are arranged, so that the influence of heat loss on the environment can be prevented, the energy consumption is reduced, the wool felt roller type seal is suitable for sealing a continuous steel belt, and the advantages of stable and reliable seal are achieved.
According to some embodiments of the invention, graphite support rollers for supporting a steel strip are provided in the front sealing device, in the insulated connector and in the cooling device.
The beneficial results are: the graphite carrier roller is mainly used for supporting a furnace steel belt, so that the steel belt does not sag to scrape the bottom of the furnace pipe, and the surface quality of the steel belt is ensured.
According to some embodiments of the invention, the preheating device is further provided with a heat exchanger.
The beneficial results are: the flue gas of the preheating device enters the heat exchanger to recover waste heat after preheating the steel strip, so that the heat can be recycled, and the energy is saved.
According to some embodiments of the invention, a temperature controller is disposed within each temperature control zone, the temperature controller comprising a thermocouple for detecting the temperature within the furnace.
The beneficial results are: the temperature control instrument can detect the temperature in each temperature control area in real time through the thermocouple, is convenient for timely adjusting the temperature, and ensures the temperature to be accurate and stable.
According to some embodiments of the invention, direct-fired burners are arranged on two inner sides of the heating furnace, and a gas pipeline and a combustion air pipeline which are communicated with the direct-fired burners are arranged on two outer sides of the heating furnace.
The beneficial results are: the direct-fired burner can be used for directly burning to heat the steel strip, the acceleration speed is high, the energy utilization rate is high, and the gas pipeline and the combustion-supporting air pipeline are arranged on two sides of the furnace heating furnace, so that the direct-fired burner is attractive and elegant and is convenient to maintain.
According to some embodiments of the invention, the furnace is further provided with a regulating valve for regulating the gas line and the combustion air line.
The beneficial results are: the adjusting valve is arranged to adjust the ratio of the fuel gas to the combustion air in the fuel gas pipeline and the combustion air pipeline, so that the size of flame can be adjusted at any time, and the temperature in the heating furnace can be controlled.
According to some embodiments of the invention, the gas line and the combustion air line are each provided with a pressure sensor.
The beneficial results are: the flow of the fuel pipeline and the flow of the combustion air pipeline can be monitored in real time through the pressure sensor, the control is easy, and abnormal pressure is prevented.
According to some embodiments of the invention, a windbox is provided in the rapid cooling stage, the windbox being provided with a plurality of nozzles for blowing cooling gas against the surface of the steel strip.
The beneficial results are: the bellows adopts the multinozzle to arrange, can not only make steel band surface temperature distribution even, and the comprehensive heat transfer nature on steel band surface is better moreover, in order to obtain higher and stable cooling speed.
According to some embodiments of the invention, the cooling gas is hydrogen or ammonia decomposition gas.
The beneficial results are: hydrogen gas or ammonia decomposition gas is an ideal cooling medium as a reducing cooling gas having high thermal conductivity and large heat capacity.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of the preheating arrangement shown in FIG. 1;
FIG. 3 is a schematic view of the heating apparatus shown in FIG. 1;
fig. 4 is a schematic view of the cooling apparatus shown in fig. 1.
Reference numerals: the device comprises a preheating device 100, a heating device 110, a heating furnace 120, a heat insulation connector 130, a temperature control area 140, a cooling device 150, a slow cooling section 160, a fast cooling section 170, a front sealing device 180, a rear sealing device 190, a gas pipeline 200, a combustion air pipeline 210 and a wind box 220.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is 2 or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
A steel strip annealing system will be described in detail below in a specific example with reference to fig. 1 to 4. It is to be understood that the following description is only exemplary, and not a specific limitation of the invention.
As shown in fig. 1 to 4, a steel strip annealing system includes a preheating device 100, a heating device 110, and a cooling device 150, which are sequentially disposed.
The preheating device 100 is used for preheating a steel strip and has a double-layer structure, a first layer of the preheating device 100 is introduced into the steel strip, and a second layer of the preheating device 100 is introduced into combusted waste gas; the heating device 110 is used for annealing the steel strip and comprises 2 heating furnaces 120, wherein the 2 heating furnaces 120 are connected by adopting a heat-preservation connector 130, and each heating furnace 120 is provided with 4 temperature control regions 140; the cooling device 150 is used for cooling the steel strip and comprises a slow cooling section 160 and a fast cooling section 170, wherein the slow cooling section 160 is cooled by a cooling water jacket, and the fast cooling section 170 is cooled by cooling gas.
The preheating device 100 can play a role in buffering, because the steel strip continuously enters, the temperature of the preheating device 100 is not very high, the sealing difficulty at an inlet can be reduced, and the heat loss can be reduced, meanwhile, the preheating device 100 is arranged into a double-layer structure, and the second layer is used for preheating the steel strip through the combusted waste gas, so that the energy consumption can be saved; the heating device 110 is provided with 2 heating furnaces 120, and each heating furnace 120 is provided with 4 temperature control regions 140, so that the temperature control is facilitated, and the 2 heating furnaces 120 are connected by adopting the heat preservation connector 130, so that the heat loss can be prevented; the cooling device 150 is provided with the slow cooling section 160 as the transition section of the heating furnace 120 and the fast cooling section 170, mainly meets the process requirements of steel strips, buffers the cooling speed of the steel strips, is convenient for flexible process adjustment, adopts a cooling water jacket for cooling the slow cooling section 160, has a simple structure, is easy to control, and can obtain a faster cooling speed and improve the product quality by cooling the fast cooling section 170 by cooling gas.
In some embodiments of the present invention, the preheating unit 100 is provided with a front sealing unit 180 at the front, the cooling unit 150 is provided with a rear sealing unit 190 at the rear, and both the front sealing unit 180 and the rear sealing unit 190 are roller-sealed by wool felt. The arrangement of the front sealing device 180 and the rear sealing device 190 can prevent heat loss from influencing the environment, simultaneously save energy consumption, adopt the wool felt roller type seal to be suitable for sealing of continuous steel belts, and have the advantages of stable and reliable seal.
Specifically, graphite carrier rollers for supporting the steel strip are arranged in the front sealing device 180, the heat-insulating connector 130 and the cooling device 150. The graphite carrier roller is mainly used for supporting a furnace steel belt, so that the steel belt does not sag to scrape the bottom of the furnace pipe, and the surface quality of the steel belt is ensured.
Furthermore, the preheating device 100 is also provided with a heat exchanger. The flue gas of the preheating device 100 enters the heat exchanger to recover the waste heat after preheating the steel strip, so that the heat can be recycled, and the energy is saved.
In addition, a temperature controller is disposed in each temperature control zone 140, and the temperature controller includes a thermocouple for detecting the temperature in the furnace. The temperature control instrument can detect the temperature in each temperature control area 140 in real time through the thermocouple, so that the temperature can be adjusted in time, and the accuracy and stability of the temperature are ensured.
In some embodiments of the present invention, the heating furnace 120 is provided with direct-fired burners at both sides of the interior thereof, and the heating furnace 120 is provided with a gas line 200 and a combustion air line 210 at both sides of the exterior thereof, which are in communication with the direct-fired burners. The direct-fired burner can be used for directly burning to heat the steel strip, the acceleration speed is high, the energy utilization rate is high, and the gas pipeline 200 and the combustion-supporting air pipeline 210 are arranged on two sides of the furnace heating furnace 120, so that the direct-fired heating furnace is attractive and elegant in appearance and convenient to maintain.
Specifically, the heating furnace 120 is also provided with regulating valves for regulating the gas line 200 and the combustion air line 210. The ratio of the gas to the combustion air in the gas pipeline 200 and the combustion air pipeline 210 is adjusted by setting adjusting valves, so that the size of the flame can be adjusted at any time, and the temperature in the heating furnace 120 can be controlled.
Further, the gas line 200 and the combustion air line 210 are each provided with a pressure sensor. The flow rates of the gas pipeline 200 and the combustion air pipeline 210 can be monitored in real time through the pressure sensors, so that the control is easy, and abnormal pressure is prevented.
It should be noted that a windbox 220 is provided in the rapid cooling section 170, and the windbox 220 is provided with a plurality of nozzles for blowing cooling gas toward the surface of the steel strip. The bellows 220 is arranged with a plurality of nozzles, so that the temperature distribution on the surface of the steel strip is uniform, the comprehensive heat exchange performance on the surface of the steel strip is better, and a higher and stable cooling speed is obtained.
It is worth mentioning that the cooling gas is hydrogen or ammonia decomposition gas. Hydrogen gas or ammonia decomposition gas is an ideal cooling medium as a reducing cooling gas having high thermal conductivity and large heat capacity.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. The steel strip annealing system is characterized by comprising the following components in sequence:
the preheating device (100) is used for preheating a steel strip and has a double-layer structure, a first layer of the preheating device (100) is introduced into the steel strip, and a second layer of the preheating device (100) is introduced into combusted waste gas;
the heating device (110) is used for annealing the steel strip and comprises 2 heating furnaces (120), the 2 heating furnaces (120) are connected through heat-preservation connectors (130), and each heating furnace (120) is provided with 4 temperature control areas (140);
the cooling device (150) is used for cooling the steel strip and comprises a slow cooling section (160) and a quick cooling section (170), wherein the slow cooling section (160) is cooled by a cooling water jacket, and the quick cooling section (170) is cooled by cooling gas.
2. A steel strip annealing system according to claim 1, characterized in that said preheating means (100) is preceded by a front sealing means (180) and said cooling means (150) is followed by a rear sealing means (190), said front sealing means (180) and said rear sealing means (190) being roller-sealed by means of felts.
3. A steel strip annealing system according to claim 2, wherein graphite idlers for supporting the steel strip are provided in the front seal (180), in the insulated connectors (130) and in the cooling means (150).
4. A steel strip annealing system according to claim 1, characterized in that said preheating means (100) are also provided with a heat exchanger.
5. A steel strip annealing system according to claim 1, wherein a temperature controller is provided in each temperature controlled zone (140), said temperature controller comprising a thermocouple for detecting the temperature in the furnace.
6. The steel strip annealing system according to claim 1, wherein the heating furnace (120) is provided with direct-fired burners at both inner sides thereof, and the heating furnace (120) is provided with gas pipelines (200) and combustion air pipelines (210) at both outer sides thereof, which are communicated with the direct-fired burners.
7. A steel strip annealing system according to claim 5, characterized in that said furnace (120) is further provided with regulating valves for regulating said gas line (200) and said combustion air line (210).
8. A steel strip annealing system according to claim 5, characterized in that said gas line (200) and said combustion air line (210) are equipped with pressure sensors.
9. A steel strip annealing system according to claim 1, wherein a windbox (220) is provided in said rapid cooling section (170), said windbox (220) being provided with a plurality of nozzles for blowing cooling gas toward the surface of the steel strip.
10. A steel strip annealing system according to claim 1, wherein said cooling gas is hydrogen or ammonia decomposition gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210155543.5A CN114438289A (en) | 2022-02-18 | 2022-02-18 | Steel band annealing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210155543.5A CN114438289A (en) | 2022-02-18 | 2022-02-18 | Steel band annealing system |
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| CN114438289A true CN114438289A (en) | 2022-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210155543.5A Pending CN114438289A (en) | 2022-02-18 | 2022-02-18 | Steel band annealing system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62124232A (en) * | 1985-08-08 | 1987-06-05 | Kawasaki Steel Corp | Method and equipment for continuously annealing and pickling stainless steel strip |
| CN204022904U (en) * | 2014-08-06 | 2014-12-17 | 中冶南方工程技术有限公司 | A kind of stainless steel belt clean annealing unit |
| WO2015180501A1 (en) * | 2014-05-30 | 2015-12-03 | 宝山钢铁股份有限公司 | Reducing gas circulation recycling system for pickling-free continuous annealing furnace and utilisation method therefor |
| CN207435489U (en) * | 2017-08-07 | 2018-06-01 | 佛山市雄顺达金属板业有限公司 | A kind of annealing furnace structure |
-
2022
- 2022-02-18 CN CN202210155543.5A patent/CN114438289A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62124232A (en) * | 1985-08-08 | 1987-06-05 | Kawasaki Steel Corp | Method and equipment for continuously annealing and pickling stainless steel strip |
| WO2015180501A1 (en) * | 2014-05-30 | 2015-12-03 | 宝山钢铁股份有限公司 | Reducing gas circulation recycling system for pickling-free continuous annealing furnace and utilisation method therefor |
| CN204022904U (en) * | 2014-08-06 | 2014-12-17 | 中冶南方工程技术有限公司 | A kind of stainless steel belt clean annealing unit |
| CN207435489U (en) * | 2017-08-07 | 2018-06-01 | 佛山市雄顺达金属板业有限公司 | A kind of annealing furnace structure |
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Application publication date: 20220506 |