CN113699363A - Horizontal bright annealing equipment of stainless steel - Google Patents
Horizontal bright annealing equipment of stainless steel Download PDFInfo
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- CN113699363A CN113699363A CN202111042119.1A CN202111042119A CN113699363A CN 113699363 A CN113699363 A CN 113699363A CN 202111042119 A CN202111042119 A CN 202111042119A CN 113699363 A CN113699363 A CN 113699363A
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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
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
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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
- C21D1/26—Methods of annealing
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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
- 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
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/19—Iron or steel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Optics & Photonics (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention relates to horizontal bright annealing equipment for stainless steel, which comprises an uncoiling section, a cleaning section, a process section, a leveling section and a coiling section which are sequentially arranged along the process flow direction, wherein i, a plurality of procedures of cleaning, annealing, leveling and the like are connected together to form a continuous unit, so that 2B/BA surface stainless steel products are directly produced, the adjustment and transportation of steel coils among the procedures are saved, the yield is improved, and the construction land and the engineering investment of a factory are greatly saved; meanwhile, the production capacity can be greatly improved, a stainless steel annealing pickling line can be comprehensively replaced, and the environmental protection problem is solved.
Description
Technical Field
The invention relates to the field of stainless steel bright annealing, in particular to horizontal bright annealing equipment for stainless steel.
Background
The existing stainless steel cold rolling and annealing are generally realized by adopting an annealing and pickling unit and a bright annealing unit, but some problems exist. The annealing and pickling line has the problems of high production cost and high pollution; the existing bright annealing unit, whether vertical bright annealing or horizontal bright annealing unit, has extremely low productivity. The large vertical bright annealing unit is a single-pass heating annealing furnace, the capacity is 6-8 ten thousand tons/year, and the capacity of the horizontal bright annealing unit is 1-10 ten thousand tons/year. Most of the existing horizontal bright annealing units of some stainless steel production plants have no degreasing section, no loop and no leveling machine, the productivity is low, and the inlet and the outlet of the horizontal annealing furnace have no vertical seal, so the atmosphere control difficulty is high.
Disclosure of Invention
The invention aims to provide horizontal bright annealing equipment for stainless steel, and solves the problem that the existing annealing pickling line and bright annealing line are low in productivity.
The specific scheme is as follows:
a horizontal bright annealing device for stainless steel comprises an uncoiling section, a cleaning section, a process section, a flattening section and a coiling section which are sequentially arranged along the process flow direction;
the uncoiling section comprises a first uncoiler, a second uncoiler and a welding machine, wherein the first uncoiler and the second uncoiler are arranged in parallel at the front end of the welding machine, the first uncoiler is provided with a first inlet shear, and the second uncoiler is provided with a second inlet shear;
the cleaning section comprises an alkali liquor spray-cleaning device, an alkali liquor brushing group, a water brushing device and a water rinsing device which are arranged in sequence;
the front section of the process section is provided with an inlet loop, and the process section consists of a bright furnace inlet sealing device, a bright furnace inlet sealing shell, a bright furnace preheating section, a bright furnace heating section, a bright furnace cooling section, a bright furnace outlet sealing shell and a bright furnace outlet sealing device;
an outlet loop is arranged at the front section of the leveling section, and the leveling section and the rolling section are respectively provided with a leveling machine and a coiling machine.
Furthermore, the pressure of a nozzle of the last stage of spray pipe sprayed by the alkali liquor in the cleaning section is not less than 200 kg, 2 or more brush rolls are arranged for alkali liquor brushing and water brushing, the diameter of bristles is 0.2 mm-0.55 mm, 3-stage or 4-stage rinsing is adopted for water rinsing, and the pressure of the last stage of nozzle is not less than 200 kg.
Furthermore, a disc roller is arranged among the preheating section of the bright furnace, the heating section of the bright furnace and the cooling section of the bright furnace, and the disc roller and the furnace shell are arranged in a sealing manner.
Furthermore, hydrogen protective gas with the concentration of 75% -100% is arranged in the annealing furnace.
Further, the inlet and outlet sealing devices of the annealing furnace are sealed by nitrogen.
Furthermore, the front section and the rear section of the inlet loop are respectively provided with a front tension roller of the inlet loop and a rear tension roller of the inlet loop.
Furthermore, the front section and the rear section of the outlet loop are respectively provided with an outlet loop front tension roller and an integrated machine front tension roller.
Furthermore, the temper mill is a double-frame temper mill, and a tension roller or a tension-free roller can be arranged between the two frames.
Compared with the prior art, the horizontal bright annealing equipment for stainless steel provided by the invention has the following advantages: according to the horizontal bright annealing equipment for the stainless steel, provided by the invention, a plurality of procedures such as cleaning, annealing and leveling are connected together to form a continuous unit, so that a 2B/BA surface stainless steel product is directly produced, the adjustment and transportation of steel coils among the procedures are omitted, the yield is improved, and the factory construction land and the engineering investment are greatly saved; meanwhile, the invention can greatly improve the productivity, can comprehensively replace a stainless steel annealing pickling line and solve the environmental protection problem.
Drawings
Fig. 1 shows a schematic view of a horizontal bright annealing apparatus for stainless steel.
Detailed Description
To further illustrate the various embodiments, the invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
The invention will now be further described with reference to the accompanying drawings and detailed description.
As shown in figure 1, the invention provides horizontal bright annealing equipment for stainless steel, which is suitable for producing 200/300/400 series stainless steel with the strip steel thickness of 0.15-3.0 mm and the width of 800-1600 mm, and the surface of the product is 2B or BA grade. The horizontal bright annealing equipment for stainless steel comprises an uncoiling section, a cleaning section, a process section, a flattening section and a coiling section which are sequentially arranged along the process flow direction.
Wherein, it includes first decoiler 1, second decoiler 2 and welding machine 5 to open a book the section, and first decoiler 1, second decoiler 2 set up side by side, and first decoiler 1 disposes a first entry and cuts 3, and second decoiler 2 disposes a second entry and cuts 4, and raw materials steel coil is opened a book through first decoiler 1, second decoiler 2 to cut 3 and the second entry at first entry and cut 4 departments and remove unqualified tape head and tape tail, realize the welding at welding machine 5.
The welded strip steel is cleaned by a cleaning section 6, and the cleaning section consists of alkali liquor spray cleaning, alkali liquor scrubbing, water scrubbing and water rinsing. The pressure of a nozzle of a last stage spray pipe of alkali liquor spraying washing reaches 200 kg, 2 or more brush rolls are arranged for alkali liquor brushing and water brushing, the diameter of bristles is 0.2-0.55 mm, 3-stage or 4-stage rinsing is adopted for water rinsing, and the pressure of a last stage nozzle reaches 200 kg; so that the surface of the cleaned strip steel is clean, and the surface residual oil and residual iron are less than 5mg/m2。
The cleaned strip steel enters the process section through the inlet loop 8, and the front section and the rear section of the inlet loop 8 are respectively provided with the inlet loop front tension roller 7 and the inlet loop rear tension roller 9 so as to ensure the tension of the strip steel entering the process section. The process section consists of a bright furnace inlet sealing device 10, a bright furnace inlet sealing shell 11, a bright furnace preheating section 12, a bright furnace heating section 13, a bright furnace cooling section 14, a bright furnace outlet sealing shell 15 and a bright furnace outlet sealing device 16; a disc roller is arranged among the preheating section 12 of the bright furnace, the heating section 13 of the bright furnace and the cooling section 14 of the bright furnace and used for rapidly replacing a supporting roller, the supporting roller on the disc roller is a high-temperature-resistant steel roller or a ceramic roller or a fiber roller, and a seal is arranged between the disc roller and a furnace shell.
The heating of the annealing furnace adopts natural gas heating or coal gas heating or electric heating, and a muffle or no muffle is arranged in the annealing furnace. The protective gas of the annealing furnace is hydrogen with the concentration of 75-100%. The inlet and outlet sealing devices of the annealing furnace are sealed by nitrogen, and the inlet and outlet sealing devices of the annealing furnace adopt a sealing mode that vertical pinch rolls are matched with nitrogen protection.
The annealed strip steel enters a leveling section through an outlet loop 18, and a front tension roller 17 of the outlet loop and a front tension roller 19 of the leveling machine are respectively arranged at the front section and the rear section of the outlet loop 18 so as to ensure the tension of the strip steel entering a process section. The leveling section is provided with a double-frame leveling machine 20, the roughness of the leveling roller of the strip steel entering the leveling section is set according to the requirement of the surface grade of a product, and single-frame leveling or double-frame leveling is determined according to the steel type, for example, 400 series stainless steel adopts double-frame leveling to achieve the optimal surface. The leveler adopts two-roller or four-roller leveler, the leveler can be a double-frame leveler or a single-frame leveler, and if the double-frame leveler is arranged, a tension roller or a tension-free roller can be arranged between the two frames.
The flattened strip steel is slit by an outlet shear 22 and then enters a coiling machine 23 for coiling, and the bright annealing process is completed.
The horizontal bright annealing equipment for stainless steel provided by the invention connects a plurality of working procedures such as cleaning, annealing and leveling together to form a continuous unit, directly produces 2B/BA surface stainless steel products, saves the allocation and transportation of steel coils among the working procedures, improves the yield, and greatly saves the construction land and the engineering investment of factories. Meanwhile, the invention can greatly improve the productivity by at least 20 ten thousand tons per year, can comprehensively replace a stainless steel annealing pickling line and solve the environmental protection problem.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The horizontal bright annealing equipment for stainless steel is characterized in that: the device comprises an uncoiling section, a cleaning section, a process section, a leveling section and a coiling section which are sequentially distributed along the direction of a process flow;
the uncoiling section comprises a first uncoiler, a second uncoiler and a welding machine, wherein the first uncoiler and the second uncoiler are arranged in parallel at the front end of the welding machine, the first uncoiler is provided with a first inlet shear, and the second uncoiler is provided with a second inlet shear;
the cleaning section comprises an alkali liquor spray-cleaning device, an alkali liquor brushing group, a water brushing device and a water rinsing device which are arranged in sequence;
the front section of the process section is provided with an inlet loop, and the process section consists of a bright furnace inlet sealing device, a bright furnace inlet sealing shell, a bright furnace preheating section, a bright furnace heating section, a bright furnace cooling section, a bright furnace outlet sealing shell and a bright furnace outlet sealing device;
an outlet loop is arranged at the front section of the leveling section, and the leveling section and the rolling section are respectively provided with a leveling machine and a coiling machine.
2. The horizontal bright annealing equipment of stainless steel according to claim 1, characterized in that: the pressure of a nozzle of the last stage of spray pipe of the alkali liquor spray washing of the cleaning section is not less than 200 kg, 2 or more brush rolls are arranged in the alkali liquor washing and water washing, the diameter of bristles is 0.2 mm-0.55 mm, 3-stage or 4-stage rinsing is adopted in the water rinsing, and the pressure of the last stage of nozzle is not less than 200 kg.
3. The horizontal bright annealing equipment of stainless steel according to claim 1, characterized in that: and a disc roller is arranged among the preheating section of the bright furnace, the heating section of the bright furnace and the cooling section of the bright furnace, and the disc roller and the furnace shell are arranged in a sealing way.
4. The horizontal bright annealing equipment of stainless steel according to claim 1, characterized in that: the annealing furnace is internally provided with hydrogen protective gas with the concentration of 75-100%.
5. The horizontal bright annealing equipment of stainless steel according to claim 1, characterized in that: and the inlet and outlet sealing devices of the annealing furnace are sealed by nitrogen.
6. The horizontal bright annealing equipment of stainless steel according to claim 1, characterized in that: the front section and the rear section of the inlet loop are respectively provided with an inlet loop front tension roller and an inlet loop rear tension roller.
7. The horizontal bright annealing equipment of stainless steel according to claim 1, characterized in that: the front section and the rear section of the outlet loop are respectively provided with an outlet loop front tension roller and an integrated machine front tension roller.
8. The horizontal bright annealing equipment of stainless steel according to claim 1, characterized in that: the temper mill is a double-frame temper mill, and a tension roller or a tension-free roller can be arranged between the two frames.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111042119.1A CN113699363A (en) | 2021-09-07 | 2021-09-07 | Horizontal bright annealing equipment of stainless steel |
| PCT/CN2021/125300 WO2023035368A1 (en) | 2021-09-07 | 2021-10-21 | Horizontal bright annealing apparatus for stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111042119.1A CN113699363A (en) | 2021-09-07 | 2021-09-07 | Horizontal bright annealing equipment of stainless steel |
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| Publication Number | Publication Date |
|---|---|
| CN113699363A true CN113699363A (en) | 2021-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111042119.1A Pending CN113699363A (en) | 2021-09-07 | 2021-09-07 | Horizontal bright annealing equipment of stainless steel |
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| Country | Link |
|---|---|
| CN (1) | CN113699363A (en) |
| WO (1) | WO2023035368A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114250355A (en) * | 2021-12-23 | 2022-03-29 | 中冶南方（武汉）热工有限公司 | Hot-rolled titanium strip continuous annealing furnace compatible with hot-rolled stainless steel annealing and method |
| CN114574673A (en) * | 2022-02-18 | 2022-06-03 | 光丰(肇庆)钢业有限公司 | Steel strip annealing production line |
| CN114672622A (en) * | 2022-04-13 | 2022-06-28 | 浙江康士达科技股份有限公司 | Bright annealing device for stainless steel band |
| CN114807583A (en) * | 2022-03-21 | 2022-07-29 | 光丰(肇庆)钢业有限公司 | Production process of steel belt |
| WO2024183124A1 (en) * | 2023-03-03 | 2024-09-12 | 中冶南方工程技术有限公司 | Stainless steel bright annealing system and method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005298845A (en) * | 2004-04-07 | 2005-10-27 | Nippon Steel Corp | Method of continuously bright-annealing stainless steel foil strip, and horizontal continuously bright-annealing furnace |
| CN100567521C (en) * | 2007-12-01 | 2009-12-09 | 徐建永 | Horizontal continuous unmuffled light annealing equipment of stainless steel band |
| CN102242248A (en) * | 2011-06-27 | 2011-11-16 | 中冶南方(武汉)威仕工业炉有限公司 | Vertical continuous bright annealing process for cold-rolled stainless steel coil |
| CN202238952U (en) * | 2011-09-14 | 2012-05-30 | 中冶南方(武汉)威仕工业炉有限公司 | Vertical continuous bright annealing entry section machine set for 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 |
| CN205774666U (en) * | 2016-05-31 | 2016-12-07 | 本钢板材股份有限公司 | A kind of continuous annealing unit of cold-rolled products |
| CN207026109U (en) * | 2017-06-12 | 2018-02-23 | 武汉乾冶工程技术有限公司 | A kind of white skin rolling annealing and pickling unit in new type stainless steel. corrosion resistance arrowband |
-
2021
- 2021-09-07 CN CN202111042119.1A patent/CN113699363A/en active Pending
- 2021-10-21 WO PCT/CN2021/125300 patent/WO2023035368A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114250355A (en) * | 2021-12-23 | 2022-03-29 | 中冶南方（武汉）热工有限公司 | Hot-rolled titanium strip continuous annealing furnace compatible with hot-rolled stainless steel annealing and method |
| CN114574673A (en) * | 2022-02-18 | 2022-06-03 | 光丰(肇庆)钢业有限公司 | Steel strip annealing production line |
| CN114807583A (en) * | 2022-03-21 | 2022-07-29 | 光丰(肇庆)钢业有限公司 | Production process of steel belt |
| CN114672622A (en) * | 2022-04-13 | 2022-06-28 | 浙江康士达科技股份有限公司 | Bright annealing device for stainless steel band |
| WO2024183124A1 (en) * | 2023-03-03 | 2024-09-12 | 中冶南方工程技术有限公司 | Stainless steel bright annealing system and method |
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| Publication number | Publication date |
|---|---|
| WO2023035368A1 (en) | 2023-03-16 |
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