CN112387781B - Flat rolling method for thin steel plate of single-stand steckel mill - Google Patents
Flat rolling method for thin steel plate of single-stand steckel mill Download PDFInfo
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- CN112387781B CN112387781B CN202011399337.6A CN202011399337A CN112387781B CN 112387781 B CN112387781 B CN 112387781B CN 202011399337 A CN202011399337 A CN 202011399337A CN 112387781 B CN112387781 B CN 112387781B
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- 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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/46—Roll speed or drive motor control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/02—Transverse dimensions
- B21B2261/04—Thickness, gauge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2267/00—Roll parameters
- B21B2267/18—Roll crown; roll profile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2275/00—Mill drive parameters
- B21B2275/02—Speed
- B21B2275/04—Roll speed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses a flat rolling method of a thin steel plate of a single-stand steckel mill, which comprises the following steps: blank length: 6600mm to 7200mm, and the blank heating temperature is 1160-1200 ℃; the rolling process comprises the following steps: the deformation of the rolling pass in the first stage is more than or equal to 15 percent; second-stage temperature-waiting thickness: 30mm to 43mm, and the temperature for two stages is as follows: 970-1060 ℃, and the deformation of the middle pass of the two-stage rolling is more than or equal to 25%; the deformation of the final rolling pass is more than or equal to 8 percent; the rolling speed is 3.3 to 6.0m/s; the finishing temperature is as follows: the temperature is 730-860 ℃, and the final rolling and steel throwing speed is 1.8-2.0 m/s; the cooling rate is less than or equal to 25 ℃/min, and the final cooling temperature is 450-680 ℃. According to the method, the control of the blank length, the heating process and the rolling process is optimized, the flat rolling process is realized on a single-stand steckel mill for the specification of 10-12mm, and the yield of the qualified products is improved on the premise of ensuring the good comprehensive performance of the steel plate.
Description
Technical Field
The invention belongs to the technical field of steel smelting, and particularly relates to a flat rolling method for a thin steel plate of a single-stand steckel mill.
Background
Under modern and high-quality smelting conditions, the rolling process formed by the medium-thickness continuous casting blank and the combined mode of the modern steckel mill has strong comprehensive competitiveness, and the rolling process has the typical characteristics that the temperature drop of a rolled piece in the rolling process can be effectively reduced, and a thin steel plate is stably produced by adopting a longer plate blank. The roll-rolling process can be adopted under the thickness specification of 20mm in general design. However, in the production by the roll-to-roll process, the working conditions of the steel plate in the coiling furnace are complex, and particularly, scratch or scale pressing is easily formed at the head and tail parts of the steel plate to cause surface defects of the steel plate. In order to reduce the cutting loss ratio, the length of the blank is generally increased as much as possible. The length of the heating blank of the heating furnace of the single-frame steckel mill is 6600-17500 mm mostly, the specification of 12mm and below is very difficult to produce by adopting the flat rolling process, and the production difficulty is higher particularly when the steel plate with ultra-low carbon design is produced by adopting the flat rolling process. For the above reasons, the roll-rolling process is generally adopted for the thickness specification of 12mm or less.
The chinese patent document with patent application No. 201110091389.1 discloses a performance control process of a hot-rolled and flat-rolled steel plate of a single-stand steckel mill, and explains a production method for producing a steel plate by the steckel mill by adopting a flat rolling process, but the production specification of the steel plate is only suitable for the specification of more than or equal to 12mm.
The Chinese patent document with the patent application number of 201310630423.7 discloses 'a production method of special pipeline steel rolled by a steckel mill', A production method for producing pipeline steel with a specification of less than 12mm by using a 150mm plate blank by using a steckel mill is explained. However, the adopted rolling process has large energy consumption and large judging amount.
Disclosure of Invention
The invention aims to provide a flat rolling method for a thin-specification steel plate of a single-stand steckel mill, and particularly relates to a flat rolling method which is realized on the single-stand steckel mill aiming at the specification of 10-12 mm by optimizing the control of the blank length, the heating process and the rolling process, and improves the yield of qualified products on the premise of ensuring good comprehensive performance of the steel plate.
The difficulty of the present invention lies in the control of the phase transformation, which on the one hand needs to avoid the precipitation of proeutectoid ferrite before cooling, and on the other hand needs to promote the formation of the medium-temperature transformation structure when the structure strengthening is required. The key point influencing the phase change is the control of the temperature of each stage. The invention utilizes the characteristics of rolling temperature rise and temperature drop to restrain the contradiction that the temperature drop is faster in the last 3 times of thin gauge by the deformation distribution of the rolling system, thereby solving the problems.
In order to achieve the purpose, the invention adopts the technical scheme that:
a flat rolling method of a thin steel plate of a single-frame steckel mill comprises the following steps: blank length: 6600-7200 mm, heating the blank at 1160-1200 deg.C; the rolling process comprises the following steps: the deformation of the rolling pass in the first stage is more than or equal to 15 percent; two-stage temperature waiting thickness: 30 mm-43 mm, the temperature of the second stage is: 970-1060 ℃, and the deformation of the middle pass of the two-stage rolling is more than or equal to 25 percent; the deformation of the final rolling pass is more than or equal to 8 percent; the rolling speed is 3.3-6.0 m/s; the finishing temperature is as follows: the final rolling and steel-polishing speed is 1.8-2.0 m/s at 730-860 ℃; the cooling rate is less than or equal to 25 ℃/min, and the final cooling temperature is 450-680 ℃. Wherein the rolling speed is the speed controlled by the whole rolling process.
Furthermore, the steel plate produced by the flat rolling method has the thickness of 10-12 mm and the structure form of one of ferrite + pearlite, acicular ferrite or granular bainite.
Further, when the steel sheet has a structure form of acicular ferrite or granular bainite, the rolling process of the flat rolling method is as follows: the deformation of the rolling pass in the first stage is more than or equal to 15 percent; second-stage temperature-waiting thickness: 30 mm-40 mm, and the temperature of the two stages: the deformation of the intermediate pass of the two-stage rolling is 25 to 35 percent at the temperature of between 1000 and 1030 ℃; finally, the deformation of the rolling pass is 8-16%; the rolling speed is 5.0-6.0 m/s; the finishing temperature is: the final rolling and steel-throwing speed is 1.8-2.0 m/s at 750-860 ℃; the cooling rate is 15-25 ℃/min, the final cooling temperature is 450-570 ℃, and the thickness of the produced steel plate is 10-11.2 mm.
Further, when the steel sheet has a structure form of acicular ferrite or granular bainite, the rolling process of the flat rolling method is as follows: the deformation of the rolling pass in the first stage is more than or equal to 15 percent; second-stage temperature-waiting thickness: 35 mm-43 mm, two-stage temperature: 970-1010 ℃, and the intermediate pass deformation of the two-stage rolling is 25-35%; finally, rolling pass deformation is 8-15%; the rolling speed is 4.5-5.5 m/s; the finishing temperature is as follows: the final rolling and steel-throwing speed is 1.8-2.0 m/s at 750-830 ℃; the cooling rate is 15-25 ℃/min, the final cooling temperature is 450-550 ℃, and the thickness of the produced steel plate is 11.3-12 mm.
Further, when the steel plate has a structure of ferrite plus pearlite, the rolling process of the flat rolling method comprises the following steps: the deformation of the rolling pass in the first stage is more than or equal to 15 percent; second-stage temperature-waiting thickness: 30 mm-43 mm, the temperature of the second stage is: the deformation of the middle pass of the two-stage rolling is 25 to 35 percent at the temperature of between 1000 and 1060 ℃; finally, the deformation of the rolling pass is 8-16%; the rolling speed is 4.0-6.0 m/s; the finishing temperature is as follows: the final rolling and steel-polishing speed is 1.8-2.0 m/s at 730-860 ℃; the cooling rate is less than or equal to 10 ℃/min, the final cooling temperature is 600-680 ℃, and the thickness of the produced steel plate is 10-11 mm.
Further, when the steel plate has a structure of ferrite plus pearlite, the rolling process of the flat rolling method comprises the following steps: the deformation of the rolling pass in the first stage is more than or equal to 15 percent; second-stage temperature-waiting thickness: 35 mm-43 mm, two-stage temperature: 980-1050 ℃, and the intermediate pass deformation of the two-stage rolling is 25-35%; finally, the deformation of the rolling pass is 8-16%; the rolling speed is 3.3-6.0 m/s; the finishing temperature is: the final rolling and steel-polishing speed is 1.8-2.0 m/s at 730-860 ℃; the cooling rate is less than or equal to 10 ℃/min, the final cooling temperature is 600-680 ℃, and the thickness of the produced steel plate is 11.1-12 mm.
Furthermore, the working roll adopts a negative convexity roll type with the convexity delta = 0.15-0.25 mm.
Further, after the working roll is replaced, the blank with the weight not less than 100 tons is adopted for ironing the roll, and then the standard of 10 mm-12 mm is produced by adopting a flat rolling process.
Further, the rolling with the specification of 10 mm-12 mm is produced by adopting a flat rolling method and is between 100 t-2500 t of the production period of the working roller, wherein the rolling with the specification of 10 mm-11 mm is between 200 t-2000 t of the production period of the working roller.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention meets the space permission condition before the single-frame steckel mill by optimizing the length of the blank, and creates a condition for reducing the temperature difference between the head and the tail; the pass deformation of the two-stage rolling is increased, the rolling speed is increased, and the temperature reduction rate and the head-tail temperature difference are slowed down, so that the final rolling temperature is in a reasonable temperature range for controlling phase change, and the appearance of mixed crystal tissues is prevented; the mechanism that the large-deformation flat rolling is more beneficial to grain refinement is utilized, and the temperature to be heated at the two stages is increased, so that the finish rolling temperature is ensured to be in a reasonable temperature range for controlling phase change, and the appearance of mixed crystal tissues is prevented; the driving force and cooling speed requirements required by the medium-temperature transformation structure are ensured through the processes of large deformation, rapid rolling and rapid cooling; by adopting the negative convexity roller shape design and optimizing the rolling period, the rolling stability and the shape control are ensured.
2. Through the measures, the production of the thin-specification steel plate with the thickness of 10-12 mm by using the blank with the specification of 150mm on the single-frame steckel mill and adopting the flat rolling process is realized, and the yield of the qualified product is improved by 10-20%.
Drawings
FIG. 1 is a schematic view of a roll profile of a work roll of the present invention.
Detailed Description
The technical solutions and effects of the present invention are further described below with reference to the accompanying drawings and specific embodiments, but the scope of the present invention is not limited thereto.
Example 1
The flat rolling method of the thin specification steel plate of the single-stand steckel mill of the embodiment is adopted to produce the L485M pipeline steel with the specification of 10mm, and the blank specification is as follows: 150X 2300X 6670mm, finished product specification: 10X 2200X 12000mm, the tissue form is acicular ferrite, and the chemical components of the blank are as follows: c:0.07wt%, si:0.22wt%, mn:1.65wt%, P:0.012wt%, S:0.008wt%, al:0.027wt%, nb:0.048wt%, ti:0.018wt%, mo:0.120wt%, and the balance of Fe and inevitable impurities.
The working rolls with the delta =0.2mm negative crown grinding are adopted, and as shown in figure 1, the rolling period is arranged between 700t and 1500t for rolling.
Heating the blank to 1180 ℃ by a stepping heating furnace, wherein the total rolling pass is 9, waiting for temperature after the 5 th rolling pass is finished, wherein the thickness of the intermediate blank is 40mm, the waiting temperature is 1018 ℃, the rolling speed is 5.9m/s, the final rolling and steel polishing speed is 2.0m/s, the head final rolling temperature is 855 ℃, the tail final rolling temperature is 753 ℃, the head final cooling temperature is 566 ℃, the tail final cooling temperature is 493 ℃, and the cooling rate is 16.8 ℃/s. The reduction at each pass is shown in Table 1.
TABLE 1 reduction ratio of each pass of this example
The steel plate is sampled and inspected by a head plate and a tail plate, and the inspection data are shown in table 2.
TABLE 2 Properties of the steel sheet of this example
The total length of the rolled steel plate is 100.1m, 8 pieces of the steel plate with a length of 12m are collected, the cutting loss is 4.1m, and the yield of the qualified steel plate is 95.9%.
Example 2
The flat rolling method of the thin specification steel plate of the single-stand steckel mill of the embodiment is adopted to produce the L360M pipeline steel with the specification of 10.2mm, and the specification of a blank is as follows: 150X 2300X 6900mm, specification of finished product: 10.2X 2200X 12050mm, the structure is ferrite + pearlite structure, the chemical composition of the blank is: c:0.17wt%, si:0.25wt%, mn:0.71wt%, P:0.015wt%, S:0.009wt%, al:0.035wt%, nb:0.012wt%, ti:0.013wt%, the balance Fe and inevitable impurities.
The working rolls with the delta =0.2mm negative crown grinding are adopted, and as shown in figure 1, the rolling period is arranged between 200t and 1200t for rolling.
Heating the blank to 1170 ℃ by a stepping heating furnace, rolling for 9 passes in the total pass, waiting for the temperature after finishing the 5 th pass rolling, wherein the thickness of the intermediate blank is 40mm, the temperature to be waited is 1033 ℃, the rolling speed is 5.7m/s, the final rolling speed of the steel throwing is 2.0m/s, the final rolling temperature of the head is 844 ℃, the final rolling temperature of the tail is 736 ℃, the final cooling temperature of the head is 672 ℃, the final cooling temperature of the tail is 628 ℃, and the cooling rate is 4 ℃/s. The reduction at each pass is shown in Table 3.
TABLE 3 reduction ratio of each pass of this example
The steel plate is sampled and inspected by a head plate and a tail plate, and the inspection data are shown in table 4.
TABLE 4 Properties of the steel sheet of this example
The total length of the rolled steel plate is 101m, 8 pieces of the steel plate with the length of 12.05m are collected, the cutting loss is 4.6m, and the yield of the qualified steel plate is 95.44%.
Comparative example 1
The L485M pipeline steel with the specification of 10mm is produced by adopting a roll-to-roll process as a comparative example 1, and the specification of a blank commonly used by the roll-to-roll process is adopted: 150 multiplied by 2300 multiplied by 8530mm, and the specification of a finished product is as follows: 10X 2200X 12000mm, the chemical composition of the blank is the same as that of example 1.
The working rolls are ground with zero convexity of delta =0mm, and the rolling period is arranged between 400t and 900t for rolling.
Heating the blank to 1180 ℃ by a stepping heating furnace, wherein the total rolling pass is 11, the thickness of the intermediate blank is 32mm, and the temperature is 940 ℃. And (4) rolling in the 8 th to 10 th passes, sampling and inspecting the head plate and the tail plate of the steel plate, wherein the inspection data are shown in a table 5.
TABLE 5 Properties of the comparative example steel sheet
The total length of the rolled steel plate is 128m, and 8 pieces of the steel plate with the length of 12m are collected. Cutting loss: 12m; judging the surface quality by 20m; the yield of the steel plate of the quality goods is 75 percent.
Comparative example 2
The L360M pipeline steel with the specification of 10.2mm is produced by adopting a rolling process as a comparative example 2, and the specification of the commonly used blank of the rolling process is adopted: 150 multiplied by 2300 multiplied by 8580mm, and the specification of a finished product is as follows: 10.2X 2200X 12050mm; the chemical composition of the blank was the same as in example 2.
The working rolls are ground with zero convexity of delta =0mm, and the rolling period is arranged between 900t and 1600t for rolling.
Heating to 1170 ℃ by a stepping heating furnace, wherein the total rolling pass is 11, the thickness of the intermediate billet is 30mm, and the temperature is 960 ℃. And rolling in the 8 th to 10 th passes. The steel plate is sampled and inspected by a head plate and a tail plate, and the inspection data are shown in a table 6.
TABLE 6 Properties of the comparative example steel sheet
The total length of the rolled steel plate is 126m, and 8 pieces of the steel plate with the length of 12.05m are collected; cutting loss: 9.6m; judging the surface quality by 20m; the yield of the qualified steel plate is 76.51%.
The method is characterized in that the process method is adopted in example 1, the conventional roll-rolling method is adopted in comparative example 1, L485M with the specification of 10 x 2200 x 12050mm is produced by adopting two methods, the strength deviation of the same batch of steel plates produced by adopting the method is slightly increased compared with the product produced by adopting the conventional roll-rolling method, the strength deviation is increased from about 15MPa to about 25MPa, the toughness, particularly the low-temperature toughness is greatly improved, and meanwhile, the yield of the qualified steel plates is increased from 75% to 95.9%.
The method is adopted in the embodiment 2, the conventional roll-rolling method is adopted in the comparative example 2, the L360M with the specification of 10.2 multiplied by 2200 multiplied by 12050mm is produced by adopting two methods, the strength deviation of the same batch of steel plates of the product produced by adopting the method is slightly increased compared with the conventional roll-rolling method, the strength deviation is increased from about 15MPa to about 25MPa, but the toughness, particularly the low-temperature toughness, is greatly improved, and meanwhile, the yield of the qualified steel plates is increased from 76.5% to 95.4%.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. A method for producing L485M pipeline steel with the thickness of 10mm by using a single-frame steckel mill and adopting a flat rolling process is characterized in that the specification of an L485M pipeline steel blank is as follows: 150 multiplied by 2300 multiplied by 6670mm, and L485M pipeline steel finished product specification: 10 x 2200 x 12000mm, the structure form is acicular ferrite, and the L485M pipeline steel blank comprises the following chemical components: c:0.07wt%, si:0.22wt%, mn:1.65wt%, P:0.012wt%, S:0.008wt%, al:0.027wt%, nb:0.048wt%, ti:0.018wt%, mo:0.120wt%, and the balance of Fe and inevitable impurities;
during rolling, the working roll is ground by a negative convexity with the diameter of delta =0.2mm, and the rolling period is arranged in a range from 700t to 1500t for rolling;
the rolling process comprises the following steps: heating the blank to 1180 ℃ by a stepping heating furnace, wherein the total rolling pass is 9, waiting for temperature after the 5 th rolling pass is finished, wherein the thickness of the intermediate blank is 40mm, the waiting temperature is 1018 ℃, the rolling speed is 5.9m/s, the final rolling and steel-throwing speed is 2.0m/s, the head final rolling temperature is 855 ℃, the tail final rolling temperature is 753 ℃, the head final cooling temperature is 566 ℃, the tail final cooling temperature is 493 ℃, and the cooling rate is 16.8 ℃/s;
wherein the reduction rate of the 1-pass is 18.7%, the reduction rate of the 2-pass is 20.5%, the reduction rate of the 3-pass is 22.7%, the reduction rate of the 4-pass is 25.3%, the reduction rate of the 5-pass is 28.6%, the reduction rate of the 6-pass is 32.5%, the reduction rate of the 7-pass is 33.3%, the reduction rate of the 8-pass is 34.4%, and the reduction rate of the 9-pass is 15.3%;
the total length of rolled steel plates is 100.1m, 8 pieces of steel plates with a length of 12m are collected, the cutting loss is 4.1m, and the yield of a qualified steel plate is 95.9%.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2236440A1 (en) * | 1997-05-01 | 1998-11-01 | Pennock Corporation | Method for steckel mill operation |
| CN102189119A (en) * | 2011-04-13 | 2011-09-21 | 南京钢铁股份有限公司 | Process for controlling shape of hot-rolled flat-rolled high-grade pipeline steel plate by using single-rack steckel mill |
| CN102225432A (en) * | 2011-04-13 | 2011-10-26 | 南京钢铁股份有限公司 | Control process for performances of steel plate during hot rolling and flat rolling process of single-stand steckel mill |
| CN102699022A (en) * | 2012-06-01 | 2012-10-03 | 南京钢铁股份有限公司 | Control method for limit specification steel roll hot rolling by single-stand steekle mill |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5133205A (en) * | 1990-11-13 | 1992-07-28 | Mannesmann Aktiengesellschaft | System and process for forming thin flat hot rolled steel strip |
| RU2549023C1 (en) * | 2013-12-06 | 2015-04-20 | Акционерное общество "Выксунский металлургический завод" | Method of production of rolled plates with strength class k65, x80, l555 to manufacture arc welded pipes of main pipelines |
| CN110453148B (en) * | 2019-09-02 | 2020-10-27 | 鞍钢股份有限公司 | Ultra-wide economical double-phase stainless steel medium plate and manufacturing method thereof |
-
2020
- 2020-12-04 CN CN202011399337.6A patent/CN112387781B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2236440A1 (en) * | 1997-05-01 | 1998-11-01 | Pennock Corporation | Method for steckel mill operation |
| CN102189119A (en) * | 2011-04-13 | 2011-09-21 | 南京钢铁股份有限公司 | Process for controlling shape of hot-rolled flat-rolled high-grade pipeline steel plate by using single-rack steckel mill |
| CN102225432A (en) * | 2011-04-13 | 2011-10-26 | 南京钢铁股份有限公司 | Control process for performances of steel plate during hot rolling and flat rolling process of single-stand steckel mill |
| CN102699022A (en) * | 2012-06-01 | 2012-10-03 | 南京钢铁股份有限公司 | Control method for limit specification steel roll hot rolling by single-stand steekle mill |
Non-Patent Citations (2)
| Title |
|---|
| 炉卷轧机管线钢生产工艺研究;牛胜玺等;《轧钢》;20090831(第04期);第18-21页 * |
| 薄规格管线钢轧制工艺的优化;邓杭州等;《河南冶金》;20150831(第04期);第5-7页 * |
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