CN114277380A - Rapid switching system and method for production of acid-washing flat coil and black flat coil - Google Patents
Rapid switching system and method for production of acid-washing flat coil and black flat coil Download PDFInfo
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- CN114277380A CN114277380A CN202111667744.5A CN202111667744A CN114277380A CN 114277380 A CN114277380 A CN 114277380A CN 202111667744 A CN202111667744 A CN 202111667744A CN 114277380 A CN114277380 A CN 114277380A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 67
- 238000005406 washing Methods 0.000 title claims abstract description 54
- 239000002253 acid Substances 0.000 claims abstract description 218
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 34
- 239000010959 steel Substances 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000003595 mist Substances 0.000 claims description 44
- 238000004804 winding Methods 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 12
- 238000005554 pickling Methods 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000005265 energy consumption Methods 0.000 claims description 7
- 229920001971 elastomer Polymers 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 239000007921 spray Substances 0.000 description 4
- 229920002681 hypalon Polymers 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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Abstract
The invention relates to a quick switching system and a method for production of acid-washing flat rolls and black flat rolls, which belong to the technical field of steel rolling. In addition, the quick washing nozzle is arranged at the upper part of the acid tank to wash residual acid in the acid tank, so that the acid tank cover can be opened in a short time, the process conversion/adjustment time is shortened, and the production efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of steel rolling, and relates to a system and a method for quickly switching production of acid-washing flat coils and black flat coils.
Background
At present, the traditional hot continuous rolling mill, the short-process ESP and the Castrip can stably roll hot-rolled strip steel with the thickness of about 0.8mm, particularly, the proportion of the thickness of a product produced by the short-process continuous casting and rolling, which is less than or equal to 1.2mm, exceeds 50 percent, the product is positioned to replace cold by hot, and the added value is higher. However, the difference between the plate shape, mechanical property and surface quality of the product and the cold rolled product is large, and the product basically needs to be subjected to deep processing by a continuous pickling leveling machine set or a continuous leveling straightening and withdrawing machine set to meet the requirements of downstream customers on the plate shape, the product performance and the surface quality. With the change of market conditions, the demand of acid-washing flat rolls and black flat rolls fluctuates greatly. If the black flat coil production is large, the continuous acid-washing temper mill is switched to produce the black flat coil. In order to save investment, enterprises only build 1 pickling leveling machine set and switch between production of pickling leveling rolls and production of black leveling rolls. When the acid-washing flat coil is switched into the black flat coil, the conventional drying roller is utilized, and the high-speed dry friction causes serious abrasion and even scrapping of the drying roller. When the process is switched to the acid-washing flattening roll process, all the drying rollers need to be replaced, and the cost is high. In addition, when the acid tank is switched to the black flat roll, a large amount of labor and time are needed to wash the residual acid in the acid tank after the acid in the acid tank is emptied. In addition, during black flat roll production, the acid mist fan needs a large air volume to prevent the acid mist from returning to the acid tank, but the high-speed operation of the acid mist fan has large energy consumption and large acid-containing waste gas discharge.
Disclosure of Invention
In view of the above, the present invention provides a system and a method for rapidly switching between production of acid-washing flat rolls and production of black flat rolls, so as to achieve production of black flat rolls on a continuous acid-washing flat machine set and rapid switching between production of acid-washing flat rolls and production of black flat rolls.
In order to achieve the purpose, the invention provides the following technical scheme:
a quick switching system for production of acid-washing flat rolls and black flat rolls comprises an acid tank, wherein a plurality of wringing rollers for production of acid-washing flat rolls are arranged in the acid tank, a plurality of acid supply switch valves are arranged on one side of the acid tank, an acid mist air pipe switch valve is arranged at the position, corresponding to an acid mist outlet, of the top of the acid tank, a plurality of quick washing nozzles are arranged at the upper part of the acid tank, and a plurality of acid discharge switch valves are arranged at the bottom of the acid tank; the device also comprises a plurality of special black flat roll rollers which can be arranged at the installation positions of the drying rollers and are used for black flat roll production, and a quick roller changing device which is positioned on one side of the acid tank, so that the quick switching between the drying rollers and the special black flat roll rollers can be realized when the production modes are switched.
Optionally, a wringing roller lining layer is arranged on the surface of the wringing roller, and the wringing roller lining layer is made of rubber hypalon; the surface of the special roller for the black flat winding is provided with a special roller lining layer for the black flat winding, and the special roller lining layer for the black flat winding is made of polyurethane.
A quick switching method for production of acid-washing flat rolls and black flat rolls is provided, and the quick switching system comprises the following steps:
the first mode is as follows: the acid-washing flat coil is switched to black flat coil production: closing the acid circulation system and the acid supply switch valve, and opening the acid discharge switch valve; after the acid liquor is completely emptied, washing the acid tank; after the washing is finished, closing the acid discharge switch valve and the acid mist air pipe switch valve; the squeezing roller is replaced by a special roller for black flat winding by a quick roller replacing device, and the set tension of the acid tank is increased to the state that the unit tension of the strip steel is more than or equal to 15N/mm2The acid tank can be used for producing black flat rolls;
and a second mode: the production is switched from black flat coil to acid washing flat coil: preliminarily cleaning iron powder in an acid tank, replacing a special roller for black flat winding with a squeezing roller by using a quick roller replacing device, then opening an acid supply switch valve, an acid discharge switch valve and an acid mist air pipe switch valve, closing a tank cover, supplementing sealing water to the tank cover, and adjusting the set tension of the acid tank to the state that the unit tension of strip steel is more than or equal to 10N/mm2And the acid tank can be used for producing acid-washing flat rolls.
Optionally, according to the production process, the tension of the strip steel is adjusted, the sag of the strip steel is controlled to be matched with the depth of the acid tank, and the strip steel is prevented from rubbing the bottom of the acid tank when the black flat coil runs at a high speed.
Optionally, according to the production process, an acid supply switch valve, an acid discharge switch valve and an acid mist air pipe switch valve are controlled, and the acid circulation and the rotating speed of an acid mist fan are adjusted to ensure that no acid mist overflows from an acid tank, so that the energy consumption and the acid mist discharge are reduced.
Optionally, the acid tank is automatically washed by a quick washing nozzle arranged at the upper part of the acid tank.
The invention has the beneficial effects that:
1. the invention realizes the rapid switching of the production modes of the black flat coil and the acid pickling flat coil, and shortens the time for switching the acid pickling flat coil into the flat withdrawing and straightening black flat coil from the original 6h to 2 h; the time required for switching the leveling, pulling and straightening black flat coil into an acid-washing flat coil is shortened to 3 hours from the original 8-12 hours; the flexible demand of market orders is met.
2. The invention adopts the special roller for the black flat coil during the production of the black flat coil, thereby reducing the consumption of the drying roller.
3. When the black flat roll is produced, the acid mist fan can keep the negative pressure of the acid tank by maintaining small air quantity, and the invention has low energy consumption and small acid mist discharge.
4. When the black flat roll is produced, the acid liquor in the acid tank can be stored in the acid tank without being discharged to an acid regeneration station, so that the acid discharge time and the acid addition time are reduced, and the energy consumption is reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic structural diagram of a fast switching system, wherein:
FIG. 1a is a front view of a fast switching system;
FIG. 1b is a top view of the fast switching system;
fig. 1c is a side view of the fast switching system.
Reference numerals: the device comprises an acid tank 1, a drying roller 2, a black flat roll special roller 3, a quick roller changing device 4, an acid supply switch valve 5, an acid discharge switch valve 6, a quick washing nozzle 7 and an acid mist air pipe switch valve 8.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1, a fast switching system for production of acid-washing flat rolls and black flat rolls comprises an acid tank 1, wherein a plurality of wringing rollers 2 for production of acid-washing flat rolls are arranged in the acid tank 1, a plurality of acid supply switch valves 5 are arranged on one side of the acid tank 1, an acid mist outlet communicated with an acid mist air pipe is arranged at the top of the acid tank 1, an acid mist air pipe switch valve 8 is arranged at the position, corresponding to the acid mist outlet, at the top of the acid tank 1, and a plurality of acid discharge switch valves 6 are arranged at the bottom of the acid tank 1; the device also comprises a plurality of special black flat roll rollers 3 which can be arranged at the installation positions of the drying rollers and used for black flat roll production, and a quick roller changing device 4 which is positioned on one side of the acid tank 1, so that the drying rollers 2 and the special black flat roll rollers 3 can be quickly switched when the production modes are switched.
The invention adopts the wringing roller 2 when the acid cleaning flat coil is produced, and adopts the special roller 3 for the black flat coil when the black flat coil is produced, thereby reducing the consumption of the wringing roller 2; the quick switching between the wringing roller 2 and the special roller 3 for the black flat coil is realized through the quick roller changing device 4 when the production modes are switched, the low-cost production of the black flat coil on a continuous pickling leveling machine set is realized, the quick switching between the pickling leveling coil production and the black flat coil production is also realized, and the roller changing time is reduced.
Optionally, a plurality of quick washing nozzles 7 are arranged at the upper part of the acid tank to wash the residual acid in the acid tank 1. According to the invention, the quick washing nozzle 7 is arranged at the upper part of the acid tank to wash the residual acid in the acid tank 1, so that the acid tank cover can be opened in a short time, the process conversion/adjustment time is reduced, and the production efficiency is improved.
Optionally, a wringing roller lining layer is arranged on the surface of the wringing roller 2, and the wringing roller lining layer is made of rubber hypalon; the surface of the black flat rolling special roller 3 is provided with a black flat rolling special roller lining layer which is made of polyurethane. The surface of the wringing roller 2 is lined with the rubber Hepaton, has certain elasticity, and can quickly wring acid liquor on the surface of the strip steel; the surface lining layer polyurethane of the special roller 3 for the black flat winding has wear resistance and aging resistance, and can prolong the service cycle of the carrier roller.
A quick switching method for production of acid-washing flat rolls and black flat rolls comprises the following steps:
the first mode is as follows: the acid-washing flat coil is switched to black flat coil production: closing the acid circulation system and the acid supply switch valve 5, and opening the acid discharge switch valve 6; after the acid liquor is completely emptied, washing the acid tank 1; after the washing is finished, closing the acid discharge switch valve 6 and the acid mist air pipe switch valve 8; the squeezing roller 2 is replaced by a special roller 3 for black flat winding by a quick roller replacing device 4, and the set tension of the acid tank is increased to the unit tension of the strip steel which is more than or equal to 15N/mm2The acid tank can be used for producing black flat rolls;
and a second mode: the production is switched from black flat coil to acid washing flat coil: preliminarily cleaning iron powder in an acid tank 1, replacing a special roller 3 for black flat winding with a wringing roller 2 by using a quick roller replacing device 4, then opening an acid supply switch valve 5, an acid discharge switch valve 6 and an acid mist air pipe switch valve 8, closing a tank cover, supplementing sealing water to the tank cover, and adjusting the set tension of the acid tank to the state that the unit tension of strip steel is more than or equal to 10N/mm2And the acid tank can be used for producing acid-washing flat rolls.
Optionally, after the drying roller 2 is replaced by the black flat roll special roller 3, the slot cover is opened, and the inspection confirms that all the devices meet the requirements; after replenishing the tank cover with sealing water, all equipment was checked to be satisfactory.
Optionally, the acid tank 1 is automatically and rapidly washed by a rapid washing spray head 7 arranged at the upper part of the acid tank. The residual acid in the acid tank 1 is automatically and quickly washed through the quick washing nozzle 7, so that the acid tank cover can be opened in a short time, the process conversion/adjustment time is shortened, and the production efficiency is improved.
Optionally, according to the production process, the tension of the strip steel is adjusted, the sag of the strip steel is controlled to be matched with the depth of the acid tank 1, the strip steel is prevented from rubbing the bottom of the acid tank 1 during high-speed operation of the black flat coil, and the problems of scratching of the surface of the strip steel and fire of the acid tank 1 caused by rubbing the strip steel against the acid tank 1 are further avoided.
Optionally, according to the production process, the acid supply switch valve 5, the acid discharge switch valve 6 and the acid mist air pipe switch valve 8 are controlled, and the acid circulation and the rotating speed of the acid mist fan are adjusted to ensure that the acid tank 1 does not overflow acid mist to corrode strip steel and the workshop environment. According to the invention, the acid supply switch valve 5, the acid discharge switch valve 6 and the acid mist air pipe switch valve 8 are switched according to the production process, the acid circulation and the rotating speed of the acid mist fan are adjusted, the condition that no acid mist overflows from the acid tank 1 to corrode strip steel and workshop environment is ensured, and the energy consumption and the acid mist discharge amount are reduced.
Examples
A quick switching method for production of acid-washing flat rolls and black flat rolls realizes quick switching of production processes of acid-washing flat rolls and black flat rolls by switching between a wringing roller 2 of an acid-washing section and a special roller 3 of the black flat rolls and switching of a valve of an acid tank matching system, and comprises the following steps:
the first mode is as follows: the acid-washing flat coil is switched to black flat coil production: the production of acid-washing flat coils is switched to black flat coils: and (3) closing the acid circulation system and the acid supply switch valve 5, opening the acid discharge switch valve 6, opening the quick washing spray nozzle 7 after the acid liquor is completely emptied, and closing the acid discharge switch valve 6, the quick washing spray nozzle 7 and the acid mist air pipe switch valve 8 after the residual acid liquor is washed. Meanwhile, the squeezing roller 2 is replaced by a special roller 3 for black flat winding by a quick roller replacing device 4. Opening the tank cover, checking and confirming, increasing the set tension of the acid tank to the unit tension of the strip steel of more than or equal to 15N/mm after all equipment meets the requirements2The acid tank can be used for producing the black plain coil.
And a second mode: the production is switched from black flat coil to acid washing flat coil: the iron powder in the acid tank 1 is cleaned preliminarily by manpower, the special roller 3 for the black flat roll is replaced by the wringing roller 2 by the quick roller replacing device 4, and then the acid supply switch valve 5, the acid discharge switch valve 6 and the acid mist air pipe switch valve 8 are opened. Closing the tank cover, supplementing sealing water to the tank cover, checking to confirm that all equipment meets the requirements, and adjusting the set tension of the acid tank to the state that the unit tension of the strip steel is more than or equal to 10N/mm2And the acid tank can be used for producing acid-washing flat rolls.
The quick roll changing device 4 is suitable for the squeezing roll 2 and the special black flat roll 3, the surface lining layer of the squeezing roll 2 is made of Hepaton rubber, and the surface lining layer of the special black flat roll 3 is made of polyurethane. According to the production process, an acid supply switch valve 5, an acid discharge switch valve 6 and an acid mist air pipe switch valve 8 are controlled, and the acid circulation and the rotating speed of an acid mist fan are adjusted to ensure that no acid mist overflows from an acid tank 1 to corrode strip steel and the workshop environment; according to the production process, the tension of the strip steel is adjusted, and the sag of the strip steel is controlled to be matched with the depth of the acid tank 1, so that the strip steel is prevented from rubbing the bottom of the acid tank 1 when the black flat coil runs at a high speed.
The invention can produce the black flat roll on the continuous acid cleaning leveling unit, adopt and adapt to 2 and black flat roll fast roll changing device 4 of the special roller 3 of roll to realize the fast roll changing, has reduced the roll changing time, has realized the fast switch over of acid cleaning flat roll and black flat roll production technology, wherein, the acid cleaning flat roll production adopts the squeeze roll 2, the black flat roll production adopts the special roller 3 of black flat roll, has reduced the consumption of the squeeze roll 2; according to the production process, the tension of the strip steel is adjusted, the sag of the strip steel is controlled to be matched with the depth of the acid tank 1, and the phenomenon that the strip steel rubs the bottom of the acid tank 1 when the black flat coil runs at a high speed to scratch the surface of the strip steel and the acid tank 1 is ignited is avoided; according to the production process, an acid supply switch valve 5, an acid discharge switch valve 6 and an acid mist air pipe switch valve 8 are switched, the acid circulation and the rotating speed of an acid mist fan are adjusted, the condition that no acid mist overflows from an acid tank 1 to corrode strip steel and the workshop environment is ensured, and the energy consumption and the acid mist discharge amount are reduced; the quick washing spray head 7 is arranged on the upper part of the acid tank to wash residual acid in the acid tank 1, so that the acid tank cover can be opened in a short time, the process conversion/adjustment time is shortened, and the production efficiency is improved.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (6)
1. A quick switching system of pickling flat coil and black flat coil production which characterized in that: the device comprises an acid tank, wherein a plurality of wringing rollers for acid-washing flat roll production are arranged in the acid tank, a plurality of acid supply switch valves are arranged on one side of the acid tank, an acid mist air pipe switch valve is arranged at the position, corresponding to an acid mist outlet, of the top of the acid tank, a plurality of quick washing nozzles are arranged at the upper part of the acid tank, and a plurality of acid discharge switch valves are arranged at the bottom of the acid tank; the device also comprises a plurality of special black flat roll rollers which can be arranged at the installation positions of the drying rollers and are used for black flat roll production, and a quick roller changing device which is positioned on one side of the acid tank, so that the quick switching between the drying rollers and the special black flat roll rollers can be realized when the production modes are switched.
2. The system of claim 1 for rapid changeover between acid wash flat coil and black flat coil production, wherein: the surface of the wringing roller is provided with a wringing roller lining layer which is made of rubber of hypaeron; the surface of the special roller for the black flat winding is provided with a special roller lining layer for the black flat winding, and the special roller lining layer for the black flat winding is made of polyurethane.
3. A fast switching method for production of acid pickling flat rolls and black flat rolls, which provides the fast switching system as claimed in any one of claims 1 to 2, characterized in that: the method comprises the following steps:
the first mode is as follows: the acid-washing flat coil is switched to black flat coil production: closing the acid circulation system and the acid supply switch valve, and opening the acid discharge switch valve; after the acid liquor is completely emptied, washing the acid tank; after the washing is finished, closing the acid discharge switch valve and the acid mist air pipe switch valve; the squeezing roller is replaced by a special roller for black flat winding by a quick roller replacing device, and the set tension of the acid tank is increased to the state that the unit tension of the strip steel is more than or equal to 15N/mm2The acid tank can be used for producing black flat rolls;
and a second mode: the production is switched from black flat coil to acid washing flat coil: preliminarily cleaning iron powder in an acid tank, replacing a special roller for black flat winding with a squeezing roller by using a quick roller replacing device, then opening an acid supply switch valve, an acid discharge switch valve and an acid mist air pipe switch valve, closing a tank cover, supplementing sealing water to the tank cover, and adjusting the set tension of the acid tank to the state that the unit tension of strip steel is more than or equal to 10N/mm2And the acid tank can be used for producing acid-washing flat rolls.
4. The method for rapidly switching between acid pickling flat coil and black flat coil production according to claim 3, wherein: according to the production process, the tension of the strip steel is adjusted, the sag of the strip steel is controlled to be matched with the depth of the acid tank, and the strip steel is prevented from rubbing the bottom of the acid tank when the black flat coil runs at a high speed.
5. The method for rapidly switching between acid pickling flat coil and black flat coil production according to claim 3, wherein: according to the production process, the acid supply switch valve, the acid discharge switch valve and the acid mist air pipe switch valve are controlled, and the acid circulation and the rotating speed of the acid mist fan are adjusted, so that the acid tank is ensured to have no acid mist overflow, and the energy consumption and the acid mist discharge are reduced.
6. The method for rapidly switching between acid pickling flat coil and black flat coil production according to claim 3, wherein: the acid tank is automatically washed through the quick washing nozzle arranged on the upper part of the acid tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111667744.5A CN114277380B (en) | 2021-12-31 | 2021-12-31 | Rapid switching system and method for production of pickling flat rolls and black flat rolls |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111667744.5A CN114277380B (en) | 2021-12-31 | 2021-12-31 | Rapid switching system and method for production of pickling flat rolls and black flat rolls |
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| CN114277380A true CN114277380A (en) | 2022-04-05 |
| CN114277380B CN114277380B (en) | 2023-12-05 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09143771A (en) * | 1995-11-24 | 1997-06-03 | Nippon Steel Corp | Wringer roll |
| JP2006291351A (en) * | 2005-03-16 | 2006-10-26 | Jfe Steel Kk | Method and device for exchanging linger roll |
| CN103920739A (en) * | 2014-03-27 | 2014-07-16 | 中冶南方工程技术有限公司 | Method for producing products by replacing cold by using heat with low acid consumption and high surface quality |
| CN204107998U (en) * | 2014-08-28 | 2015-01-21 | 宝钢新日铁汽车板有限公司 | A kind of squeeze roll |
| CN107034476A (en) * | 2017-04-27 | 2017-08-11 | 张家港浦项不锈钢有限公司 | The method of stainless-steel cold-rolling pickling Cleaning Process section defect processing |
| CN108787743A (en) * | 2018-04-24 | 2018-11-13 | 日照钢铁控股集团有限公司 | A kind of manufacturing technique method of high-strength steel |
| CN111390570A (en) * | 2020-03-31 | 2020-07-10 | 日照宝华新材料有限公司 | Method for mutual conversion between acid pickling coil and hot rolling leveling on acid leveling line |
-
2021
- 2021-12-31 CN CN202111667744.5A patent/CN114277380B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09143771A (en) * | 1995-11-24 | 1997-06-03 | Nippon Steel Corp | Wringer roll |
| JP2006291351A (en) * | 2005-03-16 | 2006-10-26 | Jfe Steel Kk | Method and device for exchanging linger roll |
| CN103920739A (en) * | 2014-03-27 | 2014-07-16 | 中冶南方工程技术有限公司 | Method for producing products by replacing cold by using heat with low acid consumption and high surface quality |
| CN204107998U (en) * | 2014-08-28 | 2015-01-21 | 宝钢新日铁汽车板有限公司 | A kind of squeeze roll |
| CN107034476A (en) * | 2017-04-27 | 2017-08-11 | 张家港浦项不锈钢有限公司 | The method of stainless-steel cold-rolling pickling Cleaning Process section defect processing |
| CN108787743A (en) * | 2018-04-24 | 2018-11-13 | 日照钢铁控股集团有限公司 | A kind of manufacturing technique method of high-strength steel |
| CN111390570A (en) * | 2020-03-31 | 2020-07-10 | 日照宝华新材料有限公司 | Method for mutual conversion between acid pickling coil and hot rolling leveling on acid leveling line |
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| CN114277380B (en) | 2023-12-05 |
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