CN109731913A - Method for reducing rolling force of rolling mill of double-roller continuous casting production line - Google Patents
Method for reducing rolling force of rolling mill of double-roller continuous casting production line Download PDFInfo
- Publication number
- CN109731913A CN109731913A CN201910130229.XA CN201910130229A CN109731913A CN 109731913 A CN109731913 A CN 109731913A CN 201910130229 A CN201910130229 A CN 201910130229A CN 109731913 A CN109731913 A CN 109731913A
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- China
- Prior art keywords
- continuous casting
- passed
- reducing
- cast strip
- rolling force
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000009749 continuous casting Methods 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 11
- 238000005266 casting Methods 0.000 claims description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 238000003801 milling Methods 0.000 claims description 7
- 238000005098 hot rolling Methods 0.000 claims description 6
- 229910000906 Bronze Inorganic materials 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 claims description 5
- 239000010974 bronze Substances 0.000 claims description 5
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000004615 ingredient Substances 0.000 claims description 5
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 4
- 239000010962 carbon steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000004781 supercooling Methods 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 238000005461 lubrication Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000012797 qualification Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 229910000870 Weathering steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000010731 rolling oil Substances 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 238000007668 thin rolling process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B9/00—Measures for carrying out rolling operations under special conditions, e.g. in vacuum or inert atmosphere to prevent oxidation of work; Special measures for removing fumes from rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Continuous Casting (AREA)
Abstract
The invention relates to a method for reducing rolling force of a rolling mill of a double-roller continuous casting production line. The method comprises the steps of introducing a certain amount of air and a certain amount of nitrogen into a No. 3 hot box of a double-roller continuous casting production line, and independently controlling the air content on the upper surface and the lower surface, so that a very thin oxide layer is formed on the surface of a cast strip, the surface lubrication of the cast strip is increased, the rolling force is reduced, and the service life of a roller is prolonged.
Description
Technical field
The present invention relates to a kind of methods of short route, the reduction double roller continuous casting producing line mill rolling force of low cost, thin gauge.
Background technique
The production technology of double-roller rolling strip steel is the most potential new skill in a metallurgical forward position of current steel and iron industry
The major iron and steel enterprise of art and the world puts into a kind of short route that huge fund competitively develops, low energy consumption, with low investment, at low cost one after another
With environmentally protective new process.Ultra-thin band production line feature based on the technology is that liquid molten steel passes through the injection rotation of cloth streaming system
In the molten bath that two contrary casting rolls are formed, the Cast Strip that thickness is less than 3mm is directly produced, then produce through a time hot rolling
Thickness is less than the hot rolling thin strip of 2mm out.
Currently, the realization of double roller continuous casting producing line is commercially produced, the products such as carbon steel, weathering steel, silicon steel can be produced, Cast Strip is passed through
A time milling train, most thin rolling thickness are 0.7mm, and belt steel surface and quality of edges are good.
In actual production, Cast Strip is got off from casting roll, and by inert atmosphere protection, Cast Strip enters milling train and rolled, Cast Strip
Temperature is relatively high, and roll works always at high temperature, has seriously affected roll campaign, and extending roll campaign, there are two arrange
It applies, first is that reducing Cast Strip temperature；Second is that reducing roll-force when rolling.For Cast Strip temperature due to technique requirement, it is unlimited not can be carried out
The reduction of system, therefore how to reduce roll-force during the rolling process and become primary method to increase roll campaign, reduce rolling
The most common method of power is that rolled lubricating oil is added during the rolling process, and rolling oil mass is added by control and is lubricated to reduce
Roll-force has not seen this report by increasing strip surface oxidation film to increase rolling lubrication.
The present invention under the premise of guaranteeing Cast Strip temperature, has invented a kind of for double roller continuous casting production for double roller continuous casting producing line
The method of line reduction mill rolling force.
Summary of the invention
The purpose of the invention is to provide a kind of method for reducing mill rolling force for double roller continuous casting producing line, the party
Method, by being passed through a certain amount of nitrogen and air to 3# hot tank, is formed under the premise of not influencing Cast Strip temperature in belt steel surface
One layer of very thin oxide layer increases strip surface lubrication, reduces the roll-force in the operation of rolling, extend roll campaign.
To realize the above-mentioned technical purpose, the present invention adopts the following technical scheme that.
A method of double roller continuous casting producing line mill rolling force being reduced, this method comprises the following steps:
(1) through converter or electric furnace smelting at qualified molten steel, packet, transition packet and the casting in bronze roller of reverse rotation, shape in
At certain thickness Cast Strip；
(2) in the 3# hot tank between casting machine and milling train, it is passed through a certain amount of nitrogen, while being passed through a certain amount of air,
And the air of Cast Strip upper and lower surface can be with independent control content；
(3) strip passes through a time hot rolling, is rolled into certain thickness strip；
(4) it through supercooling after hot strip rolling, batches coiled.
Preferably, molten steel composition can be carbon steel, weather-proof steel or stainless steel ingredient etc..
Preferably, molten steel forms Cast Strip by a pair of of rotating casting roll, and casting speed is less than or equal to 100m/min, formation
Cast Strip is with a thickness of 1.4-2.2mm.
Preferably, the air range that upper surface is passed through is 10-1000m3/ h, the range that Cast Strip lower surface is passed through air are
10-1000m3/h。
Preferably, the amount that Cast Strip upper and lower surface is passed through air can be gone according to the speed of producing line adjust automatically or manually into
Row adjustment.
Preferably, nitrogen content range that 3# hot tank is passed through is 5-150m3/h。
Preferably, the nitrogen amount that 3# hot tank is passed through can carry out automatically controlling adjusting or manually control adjusting.
Preferably, Cast Strip is by a time hot rolling at the hot-strip of 0.7-2.0mm thickness.
Beneficial technical effect
Advantageous effects of the invention at least that:
A certain amount of air is added in 3# hot tank, and strip surface forms one layer of very thin oxidation film, this layer of oxidation film can be with
Good lubricating action is played, roll-force is reduced, extends roll campaign.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the embodiment of the present invention, the attached drawing of embodiment will be made below simple
It introduces.It should be evident that the accompanying drawings in the following description merely relates to some embodiments of the present invention, rather than to limit of the invention
System.
Fig. 1 shows the schematic diagram of double roller continuous casting production line.
Fig. 2 shows the schematic diagrames of 3# hot tank.
Specific embodiment
It, below will be to the embodiment of the present invention in order to keep the purposes, technical schemes and advantages of the embodiment of the present invention clearer
Technical solution be clearly and completely described.Obviously, described embodiment is a part of the embodiments of the present invention, without
It is whole embodiments.Based on described the embodiment of the present invention, those of ordinary skill in the art are being not necessarily to creative work
Under the premise of every other embodiment obtained, shall fall within the protection scope of the present invention.
Unless otherwise defined, technical term or scientific term used in the disclosure should be tool in fields of the present invention
The ordinary meaning for thering is the personage of general technical ability to be understood.
The present invention is described in detail below.
Embodiment 1
(1) carbon steel through converter or electric furnace smelting ingredient qualification, a pair of of casting in bronze roller by reverse rotation form continuous casting
Band, Cast Strip is with a thickness of 1.8mm, casting speed 60m/min；
(2) 3# hot tank is passed through in Cast Strip, and upper surface is passed through 10m3/ h air, lower surface is passed through 1000m3/ h air, 3# hot tank are logical
Enter 5m3/ h nitrogen；
(3) mill milling 1.5mm specification is ventilated after body, and roll-force is reduced to 5MN by 6MN；
(4) entire casting realizes that 5 furnaces even pour using gas rolling is passed through, and than not being passed through gas rolling, more 2 furnaces are even poured.
Embodiment 2
(1) stainless steel through converter or electric furnace smelting ingredient qualification, a pair of of casting in bronze roller by reverse rotation are formed continuously
Cast Strip, Cast Strip is with a thickness of 2.2mm, casting speed 40m/min；
(2) 3# hot tank is passed through in Cast Strip, and upper surface is passed through 1000m3/ h air, lower surface is passed through 10m3/ h air, 3# hot tank are logical
Enter 70m3/ h nitrogen；
(3) mill milling 2.0mm specification is ventilated after body, and roll-force is reduced to 4MN by 4.5MN；
(4) entire casting realizes that 6 furnaces even pour using gas rolling is passed through, and than not being passed through gas rolling, more 2.5 furnaces connect
It pours.
Embodiment 3
(1) weathering steel through converter or electric furnace smelting ingredient qualification, a pair of of casting in bronze roller by reverse rotation are formed continuously
Cast Strip, Cast Strip is with a thickness of 1.4mm, casting speed 90m/min；
(2) 3# hot tank is passed through in Cast Strip, and upper surface is passed through 300m3/ h air, lower surface is passed through 100m3/ h air, 3# hot tank are logical
Enter 150m3/ h nitrogen；
(3) mill milling 0.7mm specification is ventilated after body, and roll-force is reduced to 21MN by 23MN；
(4) entire casting realizes that 3 furnaces even pour using gas rolling is passed through, and than not being passed through gas rolling, more 1.5 furnaces connect
It pours.
The above is only exemplary embodiment of the invention, protection scope and is not intended to limit the present invention, this hair
Bright protection scope is determined by the attached claims.
Claims (8)
1. a kind of method for reducing double roller continuous casting producing line mill rolling force, which is characterized in that the production method includes following step
It is rapid:
(1) through converter or electric furnace smelting at qualified molten steel, packet, transition packet and the casting in bronze roller of reverse rotation, form one in
Determine the Cast Strip of thickness；
(2) in the 3# hot tank between casting machine and milling train, it is passed through a certain amount of nitrogen, while being passed through a certain amount of air, and
Content is independently controlled to the air of Cast Strip upper and lower surface；
(3) strip passes through a time hot rolling, is rolled into certain thickness strip；
(4) it through supercooling after hot strip rolling, batches coiled.
2. reducing the method for double roller continuous casting producing line mill rolling force as described in claim 1, it is characterised in that: molten steel composition can
Think carbon steel, weather-proof steel or stainless steel ingredient etc..
3. reducing the method for double roller continuous casting producing line mill rolling force as described in claim 1, it is characterised in that: molten steel passes through one
Cast Strip is formed to rotating casting roll, casting speed is less than or equal to 90m/min, and the Cast Strip of formation is with a thickness of 1.4-2.2mm.
4. reducing the method for double roller continuous casting producing line mill rolling force as described in claim 1, it is characterised in that: Cast Strip upper surface
The air range being passed through is 10-1000m3/ h, the range that lower surface is passed through air is 10-1000m3/h。
5. reducing the method for double roller continuous casting producing line mill rolling force as claimed in claim 4, it is characterised in that: can be according to production
The speed of line goes adjust automatically or is adjusted the amount that Cast Strip upper and lower surface is passed through air manually.
6. reducing the method for double roller continuous casting producing line mill rolling force as described in claim 1, it is characterised in that: 3# hot tank is passed through
Nitrogen content range be 5-150m3/h。
7. reducing the method for double roller continuous casting producing line mill rolling force as claimed in claim 6, it is characterised in that: 3# hot tank is passed through
Nitrogen amount can carry out automatically controlling adjusting or manually control adjusting.
8. reducing the method for double roller continuous casting producing line mill rolling force as described in claim 1, it is characterised in that: Cast Strip passes through one
Passage hot rolling at 0.7-2.0mm thickness hot-strip.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910130229.XA CN109731913B (en) | 2019-02-21 | 2019-02-21 | Method for reducing rolling force of rolling mill of double-roller continuous casting production line |
| PCT/CN2020/076117 WO2020169076A1 (en) | 2019-02-21 | 2020-02-21 | Method for reducing rolling force of twin roll casting production line rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910130229.XA CN109731913B (en) | 2019-02-21 | 2019-02-21 | Method for reducing rolling force of rolling mill of double-roller continuous casting production line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109731913A true CN109731913A (en) | 2019-05-10 |
| CN109731913B CN109731913B (en) | 2020-07-24 |
Family
ID=66367921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910130229.XA Active CN109731913B (en) | 2019-02-21 | 2019-02-21 | Method for reducing rolling force of rolling mill of double-roller continuous casting production line |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109731913B (en) |
| WO (1) | WO2020169076A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111014603A (en) * | 2019-12-30 | 2020-04-17 | 江苏沙钢集团有限公司 | Double-roller casting-rolling production method of boron-added steel |
| CN111151584A (en) * | 2019-12-30 | 2020-05-15 | 江苏沙钢集团有限公司 | Novel hot box for producing high-surface-quality hot-rolled strip steel without online descaling |
| WO2020169076A1 (en) * | 2019-02-21 | 2020-08-27 | 江苏沙钢集团有限公司 | Method for reducing rolling force of twin roll casting production line rolling mill |
| WO2022057924A1 (en) * | 2020-09-18 | 2022-03-24 | Jiangsu Shagang Group Co., Ltd. | Controlling surface wrinkles on thin strip produced by twin roll casting and hot rolling |
| WO2024066739A1 (en) * | 2022-09-27 | 2024-04-04 | 江苏省沙钢钢铁研究院有限公司 | Method for ameliorating roll marks on surface of ultrathin strip steel |
| CN118513517A (en) * | 2024-07-23 | 2024-08-20 | 张家港中美超薄带科技有限公司 | Method for producing high-surface-quality thin strip steel by using double-roller casting and rolling process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078425A (en) * | 1993-06-12 | 1993-11-17 | 王绍成 | Composite steel band without cladding material and manufacture method thereof |
| JP2001212610A (en) * | 2000-01-31 | 2001-08-07 | Nkk Corp | Method of direct deliverry rolling for ingot cast continuously |
| CN103966527A (en) * | 2014-04-29 | 2014-08-06 | 宝钢不锈钢有限公司 | Austenitic stainless steel for urban rail vehicle face plates and manufacturing method of austenitic stainless steel |
| CN107142364A (en) * | 2017-04-27 | 2017-09-08 | 酒泉钢铁(集团)有限责任公司 | A kind of super-purity ferrite stainless steel double roll strip casting rolling production process |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2790485B1 (en) * | 1999-03-05 | 2002-02-08 | Usinor | CONTINUOUS CASTING PROCESS BETWEEN CYLINDERS OF HIGH-DUCTILITY FERRITIC STAINLESS STEEL STRIPS, AND THIN STRIPS THUS OBTAINED |
| US9999918B2 (en) * | 2005-10-20 | 2018-06-19 | Nucor Corporation | Thin cast strip product with microalloy additions, and method for making the same |
| CN105014021B (en) * | 2014-04-22 | 2017-06-23 | 宝山钢铁股份有限公司 | The method and device of closed room temperature under a kind of reduction thin strap continuous casting |
| CN108611565B (en) * | 2018-05-25 | 2019-12-06 | 江苏集萃冶金技术研究院有限公司 | Method for preparing high-strength low-alloy steel by twin-roll thin strip casting and aging process |
| CN108796190B (en) * | 2018-06-28 | 2020-03-20 | 东北大学 | Short-process preparation method of thin high-manganese steel plate |
| CN109731913B (en) * | 2019-02-21 | 2020-07-24 | 江苏沙钢集团有限公司 | Method for reducing rolling force of rolling mill of double-roller continuous casting production line |
-
2019
- 2019-02-21 CN CN201910130229.XA patent/CN109731913B/en active Active
-
2020
- 2020-02-21 WO PCT/CN2020/076117 patent/WO2020169076A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078425A (en) * | 1993-06-12 | 1993-11-17 | 王绍成 | Composite steel band without cladding material and manufacture method thereof |
| JP2001212610A (en) * | 2000-01-31 | 2001-08-07 | Nkk Corp | Method of direct deliverry rolling for ingot cast continuously |
| CN103966527A (en) * | 2014-04-29 | 2014-08-06 | 宝钢不锈钢有限公司 | Austenitic stainless steel for urban rail vehicle face plates and manufacturing method of austenitic stainless steel |
| CN107142364A (en) * | 2017-04-27 | 2017-09-08 | 酒泉钢铁(集团)有限责任公司 | A kind of super-purity ferrite stainless steel double roll strip casting rolling production process |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020169076A1 (en) * | 2019-02-21 | 2020-08-27 | 江苏沙钢集团有限公司 | Method for reducing rolling force of twin roll casting production line rolling mill |
| CN111014603A (en) * | 2019-12-30 | 2020-04-17 | 江苏沙钢集团有限公司 | Double-roller casting-rolling production method of boron-added steel |
| CN111151584A (en) * | 2019-12-30 | 2020-05-15 | 江苏沙钢集团有限公司 | Novel hot box for producing high-surface-quality hot-rolled strip steel without online descaling |
| WO2021136336A1 (en) * | 2019-12-30 | 2021-07-08 | Jiangsu Shagang Group Co., Ltd. | Method for producing boron-added steel based on twin-roll strip casting |
| WO2022057924A1 (en) * | 2020-09-18 | 2022-03-24 | Jiangsu Shagang Group Co., Ltd. | Controlling surface wrinkles on thin strip produced by twin roll casting and hot rolling |
| WO2024066739A1 (en) * | 2022-09-27 | 2024-04-04 | 江苏省沙钢钢铁研究院有限公司 | Method for ameliorating roll marks on surface of ultrathin strip steel |
| CN118513517A (en) * | 2024-07-23 | 2024-08-20 | 张家港中美超薄带科技有限公司 | Method for producing high-surface-quality thin strip steel by using double-roller casting and rolling process |
| CN118513517B (en) * | 2024-07-23 | 2024-10-11 | 张家港中美超薄带科技有限公司 | Method for producing high-surface-quality thin strip steel by using double-roller casting and rolling process |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020169076A1 (en) | 2020-08-27 |
| CN109731913B (en) | 2020-07-24 |
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