CN115287669B - Multifunctional strip processing unit and application method thereof - Google Patents
Multifunctional strip processing unit and application method thereof Download PDFInfo
- Publication number
- CN115287669B CN115287669B CN202210819492.1A CN202210819492A CN115287669B CN 115287669 B CN115287669 B CN 115287669B CN 202210819492 A CN202210819492 A CN 202210819492A CN 115287669 B CN115287669 B CN 115287669B
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- pickling
- strip
- section
- unit
- circulation unit
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Classifications
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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
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/027—Associated apparatus, e.g. for pretreating or after-treating
-
- 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
Abstract
The invention relates to a multifunctional strip processing unit and a use method thereof, wherein the unit comprises a strip uncoiling device, a heat treatment furnace, a pickling device and a strip coiling device which are sequentially connected and arranged along the running direction of a strip, the pickling device comprises a pickling section, the pickling section comprises at least one group of pickling tanks, at least part of the pickling tanks are provided with a mixed acid liquid circulation unit and a hydrochloric acid circulation unit, and the mixed acid liquid circulation unit and the hydrochloric acid circulation unit are respectively provided with a control valve group for controlling whether the circulation unit is communicated with the pickling tanks or not. The pickling tank of the pickling section is provided with the mixed acid liquid circulation unit and the hydrochloric acid circulation unit, and the mixed acid liquid circulation unit can supply mixed acid pickling liquid for the pickling tank, so that the pickling section can be used for pickling titanium materials, and the hydrochloric acid circulation unit can supply hydrochloric acid pickling liquid for the pickling tank, so that the pickling section can be used for pickling silicon steel, and therefore, the strip treatment unit can meet the technological requirements of silicon steel standardized pickling and titanium material continuous annealing pickling, and has high technological flexibility and wide applicability.
Description
Technical Field
The invention belongs to the technical field of metallurgy, and particularly relates to a multifunctional strip treatment unit and a use method thereof.
Background
In the field of titanium strip production, the annealing of the titanium strip is usually performed by vacuum annealing, particularly annealing before cold rolling of the titanium strip is performed in a vacuum annealing furnace, the problems of uneven internal and external heating and different internal and external ring structures of the strip exist, and meanwhile, resources are occupied, and the efficiency is low. The normalizing treatment process of the silicon steel is mature, but the strip production process of the titanium is relatively backward; in the field of titanium belt production, continuous line production is rarely adopted, but with the increase of demands, a continuous unit which saves cost and improves efficiency is a trend of producing titanium materials in the future.
Disclosure of Invention
The invention relates to a multifunctional strip processing unit and a use method thereof, which at least can solve part of defects in the prior art.
The invention relates to a multifunctional strip processing unit which comprises a strip uncoiling device, a heat treatment furnace, a pickling device and a strip coiling device which are sequentially connected in the running direction of a strip, wherein the pickling device comprises a pickling section, the pickling section comprises at least one group of pickling tanks, at least part of the pickling tanks are provided with a mixed acid liquid circulation unit and a hydrochloric acid circulation unit, and the mixed acid liquid circulation unit and the hydrochloric acid circulation unit are respectively provided with a control valve group for controlling whether the circulation unit is communicated with the pickling tanks or not.
In one embodiment, the heat treatment furnace and the strip coiling device are further connected through a bypass conveying device, the bypass conveying device is connected with the pickling device in parallel, and a channel control unit for switching the strip into the bypass conveying device and the pickling device is arranged on the outlet side of the heat treatment furnace.
As one embodiment, the pickling apparatus further comprises a pre-wash stage, the pre-wash stage being located upstream of the pickling stage.
As one embodiment, the pickling apparatus further comprises a rinsing section downstream of the pickling section.
As one embodiment, the heat treatment furnace includes an annealing furnace.
As one embodiment, the heat treatment furnace comprises a preheating section, a heating section and a cooling section which are sequentially connected along the running direction of the strip.
As one embodiment, the cooling section includes at least one of an air cooling section, an aerosol cooling section, and a water spray cooling section.
As one of the implementation modes, the heat treatment furnace and the pickling device are arranged in a line shape to form a process section, the strip uncoiling device and the strip coiling device are respectively arranged on two longitudinal sides of the process section, or the strip uncoiling device and the strip coiling device are respectively arranged on one lateral side of the process section.
The invention also relates to a use method of the multifunctional strip processing unit, which comprises the following steps:
when the unit is used for carrying out continuous annealing and acid washing treatment on the titanium material, the annealing treatment is carried out on the titanium belt through the heat treatment furnace; in the pickling tank, the mixed acid liquid circulation unit is put into use;
when the unit is used for carrying out normalizing pickling on silicon steel, normalizing treatment is carried out on the silicon steel strip through the heat treatment furnace; in the pickling tank, the hydrochloric acid circulating unit is put into use.
Further, for silicon steel which does not need pickling, the normalized silicon steel strip is sent to a strip coiling device through a bypass conveying device.
The invention has at least the following beneficial effects:
in the invention, the pickling tank of the pickling section is provided with the mixed acid liquid circulation unit and the hydrochloric acid circulation unit, and the mixed acid liquid circulation unit can supply the mixed acid pickling liquid for the pickling tank, so that the pickling section can be used for pickling titanium materials, and the hydrochloric acid circulation unit can supply the hydrochloric acid pickling liquid for the pickling tank, so that the pickling section can be used for pickling silicon steel, therefore, the strip processing unit can meet the technological requirements of silicon steel standardized pickling and titanium material continuous annealing pickling, and has high technological flexibility and wide applicability.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of an arrangement of a strip processing unit according to an embodiment of the present invention;
fig. 2 is a schematic view of another arrangement of a strip processing unit according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and 2, an embodiment of the present invention provides a multifunctional strip processing unit, including a strip uncoiling device, a heat treatment furnace, a pickling device and a strip coiling device sequentially connected and arranged along a strip running direction, where the pickling device includes a pickling section 17, the pickling section 17 includes at least one group of pickling tanks, at least part of the pickling tanks are configured with a mixed acid liquid circulation unit and a hydrochloric acid circulation unit, and the mixed acid liquid circulation unit and the hydrochloric acid circulation unit are both provided with a control valve group for controlling whether the circulation unit is communicated with the pickling tanks.
In one embodiment, as shown in fig. 1 and 2, the above-mentioned strip uncoiling device adopts a double uncoiling mode, which can effectively save inlet coil-changing time, and has two uncoiling modes of double uncoiling and single uncoiling, and has both off-line and on-line bundle-dismantling functions. Specifically, the strip uncoiling device comprises a double uncoiler and a welding machine 5, wherein the double uncoiler comprises a first uncoiler 1 and a second uncoiler 2, and the two uncoilers are both connected with the welding machine 5; the welding machine 5 is used for welding the tail of the last coil of strip and the head of the next coil of strip so as to realize continuous production, and the welding machine 5 can adopt welding equipment such as a laser welding machine 5, a laser and argon arc composite welding machine 5 and the like which can directly roll welding seams. The first uncoiler 1 can be provided with a first inlet shear 4, and can shear off unqualified belt heads and belt tails; likewise, the second unwinder 2 may be provided with a second inlet shear 3.
Further, the strip uncoiling device further comprises a trimming shear 6 which can trim the strip to remove edge defects and ensure that the strip can stably pass through subsequent equipment; the edge cutting shears 6 may be disc shears or the like.
Preferably, the heat treatment furnace can meet the requirements of silicon steel normalizing treatment and titanium annealing treatment, for example, an annealing furnace is adopted. In one embodiment, as shown in fig. 1 and 2, the heat treatment furnace comprises a preheating section 10, a heating section 11 and a cooling section 12 which are sequentially connected in the running direction of the strip; wherein, alternatively, the preheating section 10 can heat the strip material by using the flue gas of the heating section 11, for example, the flue gas of the heating section 11 is pumped into the preheating section 10 by a fan; optionally, the heating section 11 is divided into 2-6 heating sections, and each heating section is provided with a disc roller so as to realize quick roller changing and ensure the surface quality of the strip; optionally, the cooling section 12 includes at least one of an air cooling section 12, an aerosol cooling section 12 and a water spraying cooling section 12, and the cooling section 12 may be further divided into a plurality of cooling sections, and cooling devices are respectively configured for each cooling section, so as to meet the cooling process requirement of the normalizing treatment of the silicon steel and the cooling process requirement of the annealing treatment of the titanium material, for example, the air cooling section 12, the aerosol cooling section 12 and the water spraying cooling section 12 are sequentially arranged along the running direction of the strip.
In one embodiment, the temperature of the heating section 11 of the heat treatment furnace is adjustable below 1150 ℃; when the thickness of the strip material is increased, the heat treatment time is properly prolonged, and when the thickness is increased by 1 millimeter, the heat treatment time is prolonged by 1 to 2 minutes.
In one embodiment, the heat treatment furnace is provided with two sets of gas circulation units, the two sets of gas circulation units are preferably a nitrogen circulation unit and an air circulation unit, the two sets of gas circulation units are used in a switching mode (corresponding control valves are arranged on circulation pipelines) so as to ensure that the furnace atmosphere can be controlled to be nitrogen when silicon steel is produced, and the furnace atmosphere can be controlled to be air when titanium strips are produced, so that the strip treatment unit can meet the technological requirements of silicon steel normalizing treatment, titanium continuous annealing treatment and the like, and has high technological flexibility and wide applicability.
In one embodiment, the heat treatment furnace is provided with a multi-stage flue gas waste heat recovery system, so that the flue gas waste heat recovery efficiency can be improved, and the flue gas discharge temperature is stabilized to be 100-120 ℃.
Further, as shown in fig. 1 and 2, an inlet loop 8 is arranged at the inlet side of the heat treatment furnace, so that the production pace between the strip uncoiling device and the heat treatment furnace can be coordinated, and the shutdown requirements in the operation processes of inlet uncoiling, welding and the like can be met. On the inlet side of the inlet loop 8 a first tension roller 7 may be arranged and on the outlet side of the inlet loop 8 a second tension roller 9 may be arranged.
In one embodiment, as shown in fig. 1 and 2, a surface treatment unit is disposed at the outlet side of the heat treatment furnace, so that the heat treated strip can be subjected to surface treatment, thereby facilitating the subsequent pickling operation. The surface treatment unit may include a shot blasting machine 14; in the embodiment, the shot blasting machine 14 is provided with 1-3 blasting chambers, so that the process speed of the strip is 5-80 m/min. Further, the front side of the shot blasting machine 14 is provided with a third tension roller 13, and the rear side of the shot blasting machine 14 is provided with a fourth tension roller 15, so that the stable operation of the strip in the shot blasting machine 14 can be ensured.
Preferably, as shown in fig. 1 and 2, the pickling device further comprises a pre-cleaning section 16, and the pre-cleaning section 16 is located upstream of the pickling section 17, so that the strip can be pre-cleaned and wetted, the subsequent pickling efficiency can be improved, and the pickling solution consumption can be saved. Optionally, the pre-cleaning section 16 includes an on-line pre-cleaning tank configured with a pre-cleaning liquid circulation system; the pre-cleaning stage 16 may be cleaned by water washing, water mist washing, acid washing, or the like.
In one embodiment, the pickling section 17 comprises 2 to 4 pickling tanks, preferably in a shallow tank turbulent pickling mode.
The pickling tank of the pickling section 17 is provided with the mixed acid circulation unit and the hydrochloric acid circulation unit, the mixed acid circulation unit can supply mixed acid pickling solution for the pickling tank, so that the pickling section 17 can be used for pickling titanium materials, the hydrochloric acid circulation unit can supply hydrochloric acid pickling solution for the pickling tank, and the pickling section 17 can be used for pickling silicon steel, so that the strip treatment unit can meet the technological requirements of silicon steel standardized pickling and titanium material continuous annealing pickling, and the process flexibility is high and the applicability is wide.
The mixed acid circulation unit comprises a mixed acid circulation tank, the mixed acid circulation tank is provided with a new acid supply pipe, the mixed acid circulation tank is connected with an acid liquid inlet of the pickling tank through a mixed acid supply pipe, the mixed acid circulation tank is connected with an acid liquid outlet of the pickling tank through a mixed acid return pipe, and a circulation pump can be arranged on the mixed acid supply pipe. The structure of the hydrochloric acid circulation unit is similar, and a detailed description thereof is omitted.
Preferably, in order to achieve a more effective and economical pickling effect, the mixed acid entering the mixed acid circulation tank directly acts on the surface of the titanium strip, and the mixed acid is directly heated or cooled by the heat exchanger.
In one embodiment, as shown in fig. 1 and 2, the pickling apparatus further comprises a rinsing section 18, the rinsing section 18 being located downstream of the pickling section 17. Optionally, the rinse section 18 includes 3-5 stage rinse tanks, with fresh water being utilized in stages.
Preferably, when the squeezing rolls in the pickling tank and the rinsing tank are changed, the roll changing tool is used for changing the roll from the operation side, and the strip steel is not required to be sheared during roll changing, so that the smooth production can be ensured.
In one embodiment, the heat treatment furnace and the strip coiling device are further connected through a bypass conveying device, the bypass conveying device is connected with the pickling device in parallel, and a channel control unit for switching the strip into the bypass conveying device and the pickling device is arranged on the outlet side of the heat treatment furnace. For the normalized silicon steel which does not need pickling, the bypass conveying device can span the pickling section 17 without passing through the pickling section 17, so that the production flexibility can be further improved.
In one embodiment, the strip coiling device comprises a first coiling machine 23 and a second coiling machine 24, which can improve the flexibility and the coiling efficiency of the outlet coiling operation and simultaneously has the offline and online bundling functions. An outlet shear 22 is provided at the inlet of the strip coiler for cutting the continuously produced strip.
In one embodiment, as shown in fig. 1 and 2, an outlet loop 20 is disposed on the outlet side of the pickling device, so as to coordinate the production pace between the pickling device and the strip coiling device, and meet the shutdown requirements during operations such as outlet slitting, coil unloading shutdown and the like. A fifth tension roller 19 may be arranged on the inlet side of the outlet loop 20 and a sixth tension roller 21 may be arranged on the outlet side of the outlet loop 20.
In one embodiment, as shown in fig. 1, the heat treatment furnace and the pickling device are arranged in a line to form a process section, and the strip uncoiling device and the strip coiling device are respectively arranged at two longitudinal sides of the process section, namely, the strip uncoiling device, the process section and the strip coiling device are approximately arranged in a line. In a further embodiment, as shown in fig. 2, the heat treatment furnace and the pickling device are arranged in a line to form a process section, and the strip uncoiling device and the strip coiling device are arranged adjacently on one lateral side of the process section. Therefore, the arrangement flexibility of the strip treatment unit is higher.
The embodiment of the invention also provides a use method of the multifunctional strip processing unit, which comprises the following steps:
when the unit is used for carrying out continuous annealing and acid washing treatment on the titanium material, the annealing treatment is carried out on the titanium belt through the heat treatment furnace; in the pickling tank, the mixed acid liquid circulation unit is put into use;
when the unit is used for carrying out normalizing pickling on silicon steel, normalizing treatment is carried out on the silicon steel strip through the heat treatment furnace; in the pickling tank, the hydrochloric acid circulating unit is put into use.
Further, for silicon steel which does not need pickling, the normalized silicon steel strip is sent to a strip coiling device through a bypass conveying device.
The multifunctional strip processing unit provided by the embodiment of the invention is suitable for strips with the thickness of 1-10 mm and the width of 800-1600 mm, such as silicon steel strips with the thickness of 1-3 mm and the width of 800-1300 mm, and titanium materials with the thickness of 1-10 mm and the width of 800-1600 mm.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. The utility model provides a multi-functional strip processing unit, includes that the strip uncoiling device, heat treatment furnace, pickling device and the strip coiling apparatus that follow the strip running direction and link up the arrangement in proper order, its characterized in that: the pickling device comprises a pickling section, the pickling section comprises at least one group of pickling tanks, at least part of the pickling tanks are provided with a mixed acid liquid circulation unit and a hydrochloric acid circulation unit, and the mixed acid liquid circulation unit and the hydrochloric acid circulation unit are respectively provided with a control valve group for controlling whether the circulation unit is communicated with the pickling tanks or not; an inlet looper is arranged on the inlet side of the heat treatment furnace.
2. The multi-function strip material processing unit of claim 1, wherein: the heat treatment furnace is connected with the strip coiling device through a bypass conveying device, the bypass conveying device is connected with the pickling device in parallel, and a channel control unit for switching the strip into the bypass conveying device and the pickling device is arranged on the outlet side of the heat treatment furnace.
3. The multi-function strip material processing unit of claim 1, wherein: the pickling device further comprises a pre-cleaning section, which is located upstream of the pickling section.
4. The multi-function strip material processing unit of claim 1, wherein: the pickling device further comprises a rinsing section, wherein the rinsing section is positioned downstream of the pickling section.
5. The multi-function strip material processing unit of claim 1, wherein: the heat treatment furnace comprises an annealing furnace.
6. The multi-function strip processing unit of claim 1 or 5, wherein: the heat treatment furnace comprises a preheating section, a heating section and a cooling section which are sequentially connected along the running direction of the strip.
7. The multi-function strip material processing unit of claim 6, wherein: the cooling section comprises at least one of an air cooling section, an aerosol cooling section and a water spray cooling section.
8. The multi-function strip material processing unit of claim 1, wherein: the heat treatment furnace and the pickling device are arranged in a straight line to form a process section, and the strip uncoiling device and the strip coiling device are respectively arranged on two longitudinal sides of the process section, or the strip uncoiling device and the strip coiling device are respectively arranged on one lateral side of the process section in an adjacent mode.
9. The method of using a multifunctional strip processing unit of any one of claims 1 to 8, comprising:
when the unit is used for carrying out continuous annealing and acid washing treatment on the titanium material, the annealing treatment is carried out on the titanium belt through the heat treatment furnace; in the pickling tank, the mixed acid liquid circulation unit is put into use;
when the unit is used for carrying out normalizing pickling on silicon steel, normalizing treatment is carried out on the silicon steel strip through the heat treatment furnace; in the pickling tank, the hydrochloric acid circulating unit is put into use.
10. The method of claim 9, wherein the normalized strip is fed to the strip coiler by a bypass conveyor for silicon steel that does not require pickling.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210819492.1A CN115287669B (en) | 2022-07-12 | 2022-07-12 | Multifunctional strip processing unit and application method thereof |
| PCT/CN2022/112397 WO2024011704A1 (en) | 2022-07-12 | 2022-08-15 | Multifunctional strip processing unit and use method therefor |
| PCT/CN2023/086413 WO2024011965A1 (en) | 2022-07-12 | 2023-04-06 | Multifunctional strip treatment system, and method for using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210819492.1A CN115287669B (en) | 2022-07-12 | 2022-07-12 | Multifunctional strip processing unit and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115287669A CN115287669A (en) | 2022-11-04 |
| CN115287669B true CN115287669B (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210819492.1A Active CN115287669B (en) | 2022-07-12 | 2022-07-12 | Multifunctional strip processing unit and application method thereof |
Country Status (2)
| Country | Link |
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| CN (1) | CN115287669B (en) |
| WO (2) | WO2024011704A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115287669B (en) * | 2022-07-12 | 2023-09-19 | 中冶南方工程技术有限公司 | Multifunctional strip processing unit and application method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2024011704A1 (en) | 2024-01-18 |
| CN115287669A (en) | 2022-11-04 |
| WO2024011965A1 (en) | 2024-01-18 |
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