CN217948225U - Strip processing production line containing secondary rolling process - Google Patents
Strip processing production line containing secondary rolling process Download PDFInfo
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- CN217948225U CN217948225U CN202221795684.5U CN202221795684U CN217948225U CN 217948225 U CN217948225 U CN 217948225U CN 202221795684 U CN202221795684 U CN 202221795684U CN 217948225 U CN217948225 U CN 217948225U
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Abstract
The utility model relates to a production line is handled to strip that contains secondary rolling process, include that the workshop section is collected to the workshop section of opening a book, first annealing pickling workshop section and the first product that link up in proper order along strip traffic direction and arrange, still include along strip traffic direction linking up in proper order arranged rolling mill, second annealing pickling workshop section, board type finishing workshop section and second product collection workshop section, first product collection workshop section with transport the structure through the strip and link up between the rolling mill. The utility model discloses with first annealing pickling workshop section, the workshop section is collected to first product, the rolling mill, second annealing pickling workshop section, joint arrangement such as board type finishing workshop section and second product collection workshop section forms the continuous production unit, can satisfy the hot rolling stainless steel coil, the cold hard stainless steel coil, the continuous processing of strips such as hot rolling titanium book and cold hard titanium book, the coiled material or the panel product of direct production stainless steel and titanium material, save the accent of coil of strip between the process and transport, the lumber recovery has been improved, greatly save factory construction land for use and engineering investment.
Description
Technical Field
The utility model relates to a strip treatment production line containing a secondary rolling process.
Background
Stainless steel pickling, rolling, annealing, surface finishing and the like are mature production processes, and titanium coiled material production is gradually increased in recent years. In the current stage of demand, the demand and yield of stainless steel is high, and the demand and yield of titanium is low, but the demand and yield tend to increase year by year. The technology for producing the stainless steel strip is mature, the technology for producing the titanium strip is relatively laggard, the main reason is that the yield is low, most factories produce the titanium strip in a plate production mode, but with the increase of the demand, a continuous unit which saves the cost and improves the efficiency is a trend for producing the titanium strip in the future.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a strip processing production line containing a secondary rolling process, which can at least solve part of the defects of the prior art.
The utility model relates to a production line is handled to strip that contains secondary rolling process, include that the workshop section is collected to the workshop section of opening a book, first annealing pickling workshop section and the first product that link up in proper order along strip traffic direction and arrange, still include along strip traffic direction linking up in proper order arranged rolling mill, second annealing pickling workshop section, board type finishing workshop section and second product collection workshop section, first product collection workshop section with transport the structure through the strip and link up between the rolling mill.
As one embodiment, the second annealing and pickling section includes an argon-protected rapid heating annealing furnace and a light pickling unit, and the argon-protected rapid heating annealing furnace adopts a resistance furnace or an induction heating furnace.
As an embodiment, the light acid wash unit comprises a neutral salt electrolysis section and a first mixed acid wash section.
In one embodiment, the rolling mill is an in-line 18-roll rolling mill or a 6-roll tandem rolling mill with a small roll diameter.
As an embodiment, the first product collecting station comprises a first coiler and a first sheet collecting device, and the first coiler and the first sheet collecting device are connected through a transition guide plate; and/or the second product collecting section comprises a second coiling machine and a second plate collecting device, and the second coiling machine is connected with the second plate collecting device through a transition guide plate.
As one embodiment, the uncoiling station includes a double uncoiler and a welder, both uncoilers being engaged with the welder.
As an embodiment, the first annealing-pickling section comprises a pre-annealing furnace and a pre-pickling unit, and the pre-pickling unit comprises a sulfuric acid pickling section and a second mixed acid pickling section.
In one embodiment, a surface treatment mechanism is further disposed between the front annealing furnace and the front pickling unit.
In one embodiment, the surface treatment mechanism comprises a shot blasting machine and a surface re-brushing device.
As one embodiment, the plate type finishing section includes a leveler and a withdrawal leveler.
The utility model discloses following beneficial effect has at least:
the utility model discloses with first annealing pickling workshop section, the workshop section is collected to first product, the rolling mill, second annealing pickling workshop section, joint arrangement such as board type finishing workshop section and second product collection workshop section forms the continuous production unit, can satisfy the hot rolling stainless steel coil, the cold hard stainless steel coil, the continuous processing of strips such as hot rolling titanium book and cold hard titanium book, the coiled material or the panel product of direct production stainless steel and titanium material, save the accent of coil of strip between the process and transport, the lumber recovery has been improved, greatly save factory construction land for use and engineering investment.
Drawings
In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly introduced, obviously, the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic composition diagram of a strip processing line according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are described below clearly and completely, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example one
According to fig. 1, the embodiment of the utility model provides a strip treatment production line who contains secondary rolling process, include that the workshop section is collected to the workshop section of opening a book, first annealing pickling workshop section and the first product that links up in proper order along strip traffic direction and arrange, still include along strip traffic direction linking up rolling mill 14, second annealing pickling workshop section, board type finishing workshop section and the second product collection workshop section of arranging in proper order, first product collect the workshop section with transport structure 13 through the strip and link up between the rolling mill 14.
In one embodiment, as shown in fig. 1, the unwinding station adopts a double-unwinding mode, which can effectively save the inlet unwinding time, and specifically, the unwinding station includes a double-unwinding machine and a welding machine 3, the double-unwinding machine also includes a first unwinding machine 1 and a second unwinding machine 2, and both of the two unwinding machines are engaged with the welding machine 3; wherein, welding machine 3 is used for getting up the tape trailer of last coil of strip and the tape trailer welding machine 3 of next coil of strip to realize continuous production, this welding machine 3 can adopt welding equipment that laser welding machine 3, laser hybrid welding machine 3 etc. satisfy the welding seam and can directly roll. Preferably, the two uncoilers have a strip coil uncoiling capacity of 1 to 12mm of strip thickness.
The first annealing and pickling section comprises a front annealing furnace 5 and a front pickling unit 8, wherein the front annealing furnace 5 is preferably a resistance furnace or an induction heating furnace, so that the rapid heating of the strip can be realized, and the annealing effect is ensured.
In one embodiment, the pre-pickling unit 8 adopts a pickling process of pickling with sulfuric acid and pickling with mixed acid; the sulfuric acid pickling section can adopt 1-4 sections of sulfuric acid pickling tanks, the number of the sulfuric acid pickling tanks can be increased or decreased according to the requirements of the process speed and the like of the strip, each group of sulfuric acid pickling tanks is preferably provided with a sulfuric acid pickling solution circulating mechanism independently, and further, the concentration of the sulfuric acid pickling solution of each sulfuric acid pickling tank is decreased sequentially along the running direction of the strip; the mixed acid pickling preferably adopts HF and HNO 3 The mixed acid washing solution can adopt 2-4 sections of mixed acid washing tanks, each group of mixed acid washing tank is preferably provided with a mixed acid washing solution circulating mechanism independently, and furthermore, the concentration of the mixed acid washing solution of each mixed acid washing tank is gradually reduced along the running direction of the strip.
Further, as shown in fig. 1, a first loop 4 is arranged between the pre-annealing furnace 5 and the uncoiling working section, so that the production pace between the uncoiling working section and the first annealing and pickling working section can be coordinated, the first loop 4 is preferably in a full loop state during normal production, and the first loop 4 can be used for releasing to ensure that the production is smooth under the working conditions of welding operation of the welding machine 3 and the like.
Further, as shown in fig. 1, a second loop 9 is provided between the front pickling unit 8 and the first product collecting section, so that the production pace between the first annealing pickling section and the downstream section can be coordinated, and specifically, by the buffer function of the second loop 9, the normal operation of the first annealing pickling section when the roll of the rolling mill 14 is changed can be ensured, and the normal operation of the first annealing pickling section when the first product collecting section is collecting products can be ensured.
Further, as shown in fig. 1, a surface treatment mechanism is also disposed between the front annealing furnace 5 and the front pickling unit 8, and preferably, the surface treatment mechanism includes a shot blasting machine 6 and a surface re-brushing device 7, wherein: the shot blasting machine 6 can be provided with different numbers of throwing chambers according to different unit speeds, the throwing chambers are more when the speed is higher, and 1-3 throwing chamber shot blasting machines 6 are adopted in the embodiment; the surface re-brushing device 7 adopts hard bristles to brush the surface of the strip with the oxide scale, so that the pickling efficiency can be improved while part of the oxide scale is removed.
In one embodiment, the rolling mill 14 adopts an online 18-roll rolling mill 14 or a 6-roll continuous rolling mill 14 with a small roll diameter, preferably adopts a multi-frame structure, and the number of frames can be set to be not less than 3 according to the requirements of raw materials and product specifications; the total rolling reduction of the rolling mill 14 is preferably controlled to 20% to 85%. Further preferably, as shown in fig. 1, a cleaning section 15 is disposed at the outlet side of the rolling mill 14, which can remove the emulsion or the rolling oil remaining on the surface of the strip during the rolling process, and can improve the surface quality of the final product, and the cleaning section 15 can be cleaned with alkali or rinsed with hot water under high pressure.
In one embodiment, the second annealing and pickling section comprises an argon protection rapid heating annealing furnace 17 and a light pickling unit 18, the argon protection rapid annealing furnace adopts a resistance furnace or an induction heating furnace, and argon protection is introduced, so that rapid heating of the strip can be realized, and the annealing effect and the production efficiency are ensured; wherein the furnace temperature of the argon protection rapid annealing furnace is preferably controlled to be 1100-1250 ℃.
The surface of the strip treated by the argon protection rapid heating annealing furnace 17 has a thin oxide film, and the light acid washing unit 18 can remove the oxide film, so that the surface quality of the product is improved. Preferably, the light acid washing unit 18 comprises a neutral salt electrolysis section and a mixed acid washing section, and can be suitable for the treatment of stainless steel and titanium materials, and the surface state of the strip material is controlled by controlling parameters such as current, acid concentration and temperature. Preferably, the mixed acid pickling section adopts HF and HNO 3 The mixed pickling solution of (1), further comprising HNO and HF of less than or equal to 20g/l 3 ≦100g/l。
Further, as shown in fig. 1, a third loop 16 is arranged between the rolling mill 14 and the argon-protected rapid heating annealing furnace 17, so that the production pace between the rolling mill 14 and the second annealing and pickling section can be coordinated, and the second annealing and pickling section can be ensured to normally operate when the rolling mill 14 changes rolls.
Further, as shown in fig. 1, a fourth loop 19 is provided between light acid wash unit 18 and the plate finishing section, which can coordinate the production pace between the second annealing acid wash section and the downstream section.
In one embodiment, the plate type finishing section includes a leveler 20 and a tension leveler 21, which can perform plate type and surface treatments on the strip to improve the quality of the strip product, such as the stainless steel strip surface meeting the 2B/2D surface delivery requirements, the titanium strip surface meeting the customer's required roughness requirements, etc.
The strip processing production line provided by the embodiment can be used for processing stainless steel strip steel and can also be used for processing titanium strip; a coil can be obtained, but also a plate, respectively:
as shown in fig. 1, the first product collecting station includes a first coiler 10 and a first sheet material collecting device 12, and the first coiler 10 is engaged with the first sheet material collecting device 12 through a first transition guide 11; and/or the second product collecting section comprises a second coiling machine 22 and a second plate collecting device 24, and the second coiling machine 22 is connected with the second plate collecting device 24 through a second transition guide plate 23. Wherein, when the target product is a plate material, the strip material needs to be cut into plates, therefore, the first product collecting station further comprises a strip material cutting device, which can be arranged at the inlet side of the first product collecting station, for example, at the incoming side of the first coiling machine 10, or between the first coiling machine 10 and the first plate material collecting device 12; the second product collecting section may also be provided with a strip cutting device, and the specific arrangement structure is not described herein. The first sheet material collecting device 12 and the second sheet material collecting device 24 may be a sheet material stacker or the like.
In addition, the strip transfer structure 13 between the first product collection section and the rolling mill 14 can also adopt a transition guide plate.
Based on the strip processing production line, the processing of stainless steel or titanium materials can be met, and the raw material coil can be hot-rolled black coil stainless steel, cold-hardened stainless steel, hot-rolled titanium coil and the like; the strip thickness specification may be 1mm to 12mm. The strip processing line has two main production processes:
after strip materials are sequentially processed by an uncoiling working section and a first annealing and pickling working section, the obtained products are collected by a first product collecting working section;
after the strip material is sequentially processed by an uncoiling working section, a first annealing and pickling working section, a rolling mill 14, a second annealing and pickling working section and a plate type finishing working section, the obtained product is collected by the second product collecting working section.
The strip processing production line provided by the embodiment forms a continuous production unit by jointly arranging the first annealing and pickling section, the first product collecting section, the rolling mill 14, the second annealing and pickling section, the plate type finishing section, the second product collecting section and the like, can meet the continuous processing of strips such as hot-rolled stainless steel coils, cold-hardened stainless steel coils, hot-rolled titanium coils, cold-hardened titanium coils and the like, directly produces coiled materials or plate products of stainless steel and titanium materials, saves the adjustment and transportation of steel coils among processes, improves the yield, and greatly saves the factory construction land and the engineering investment.
Example two
Referring to fig. 1, the embodiment of the present invention provides a strip processing method based on the strip processing line including the secondary rolling process provided in the first embodiment, wherein,
when hot rolled strips are treated, strip raw materials are sequentially treated by an uncoiling working section and a first annealing and pickling working section, and obtained products are collected by a first product collecting working section;
when the cold-rolled strip or the strip is processed and needs to be thinned, the strip raw material is sequentially processed by an uncoiling working section, a first annealing and pickling working section, a rolling mill 14, a second annealing and pickling working section and a plate type finishing working section, and the obtained product is collected by the second product collecting working section.
The related contents of the strip processing method are described in the first embodiment, and are not described herein.
The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a strip treatment production line who contains secondary rolling process, includes the workshop section of opening a book, first annealing pickling workshop section and the first product collection workshop section of linking up the arrangement in proper order along strip traffic direction which characterized in that: the strip steel plate finishing machine further comprises a rolling mill, a second annealing and pickling section, a plate type finishing section and a second product collecting section which are sequentially connected and arranged along the running direction of the strip steel plate, wherein the first product collecting section is connected with the rolling mill through a strip steel transfer structure.
2. The strip processing line containing a secondary rolling pass of claim 1, wherein: the second annealing and pickling section comprises an argon protection rapid heating annealing furnace and a light pickling unit, wherein the argon protection rapid annealing furnace adopts a resistance furnace or an induction heating furnace.
3. The strip processing line containing a secondary rolling pass of claim 2, wherein: the light acid washing unit comprises a neutral salt electrolysis section and a first mixed acid washing section.
4. A strip processing line comprising a secondary rolling pass according to claim 1, wherein: the rolling mill adopts an online 18-roller rolling mill or a 6-roller continuous rolling mill with small roller diameter.
5. A strip processing line comprising a secondary rolling pass according to claim 1, wherein: the first product collecting section comprises a first coiling machine and a first plate collecting device, and the first coiling machine is connected with the first plate collecting device through a transition guide plate; and/or the second product collecting section comprises a second coiling machine and a second plate collecting device, and the second coiling machine is connected with the second plate collecting device through a transition guide plate.
6. The strip processing line containing a secondary rolling pass of claim 1, wherein: the uncoiling working section comprises a double uncoiler and a welding machine, and the two uncoilers are connected with the welding machine.
7. The strip processing line containing a secondary rolling pass of claim 1, wherein: the first annealing and pickling section comprises a front annealing furnace and a front pickling unit, and the front pickling unit comprises a sulfuric acid pickling section and a second mixed acid pickling section.
8. A strip processing line comprising a secondary rolling pass according to claim 7, wherein: and a surface treatment mechanism is also arranged between the front annealing furnace and the front pickling unit.
9. The strip processing line containing a secondary rolling pass of claim 8, wherein: the surface treatment mechanism comprises a shot blasting machine and a surface re-brushing device.
10. The strip processing line including a secondary rolling pass of claim 1, wherein the slab finishing section includes a leveler and a withdrawal leveler.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221795684.5U CN217948225U (en) | 2022-07-12 | 2022-07-12 | Strip processing production line containing secondary rolling process |
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| CN202221795684.5U CN217948225U (en) | 2022-07-12 | 2022-07-12 | Strip processing production line containing secondary rolling process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024011966A1 (en) * | 2022-07-12 | 2024-01-18 | 中冶南方工程技术有限公司 | Strip processing production line containing secondary rolling process, an strip processing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024011966A1 (en) * | 2022-07-12 | 2024-01-18 | 中冶南方工程技术有限公司 | Strip processing production line containing secondary rolling process, an strip processing method |
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