CN113828643A - Temperature control method for rolling strip steel in ferrite area - Google Patents
Temperature control method for rolling strip steel in ferrite area Download PDFInfo
- Publication number
- CN113828643A CN113828643A CN202010582049.8A CN202010582049A CN113828643A CN 113828643 A CN113828643 A CN 113828643A CN 202010582049 A CN202010582049 A CN 202010582049A CN 113828643 A CN113828643 A CN 113828643A
- Authority
- CN
- China
- Prior art keywords
- temperature
- rolling
- intermediate billet
- billet
- cooling device
- 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.)
- Pending
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 72
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 60
- 239000010959 steel Substances 0.000 title claims abstract description 60
- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 65
- 229910001566 austenite Inorganic materials 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 239000000498 cooling water Substances 0.000 claims abstract description 6
- 238000004321 preservation Methods 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims description 20
- 230000001133 acceleration Effects 0.000 claims description 6
- 238000005098 hot rolling Methods 0.000 claims description 6
- 230000009466 transformation Effects 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims 1
- 238000011897 real-time detection Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000000137 annealing Methods 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000005097 cold rolling Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 238000001953 recrystallisation Methods 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000655 Killed steel Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910000954 Medium-carbon steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- B21B1/30—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 in a non-continuous process
- B21B1/32—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 in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
- B21B1/34—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 in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by hot-rolling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Control Of Metal Rolling (AREA)
Abstract
本发明涉及一种铁素体区轧制带钢的温度控制方法，在粗轧机出口处设置第一中间坯冷却装置，在热卷箱或保温罩的出口处设置第二中间坯冷却装置；控制钢坯的加热温度在1050～1200℃，粗轧后中间坯温度在钢的奥氏体温度区间，且在奥氏体的终了温度以上10～40℃，实时检测精轧机组入口前的中间坯温度，所述第一冷却装置全开、第二中间坯冷却装置根据该温度实时调整各对冷却器的开闭组合及冷却水流量，使得精轧机组入口前的中间坯被冷却至铁素体相变终止温度以上0～30℃。本发明解决了现有技术中精轧前中间坯温度控制不精确、带坯温度不均匀和粗轧精轧之间冷却摆荡时间过长的问题。
The invention relates to a temperature control method for rolling strip steel in a ferrite zone. A first intermediate billet cooling device is arranged at the exit of a rough rolling mill, and a second intermediate billet cooling device is arranged at the exit of a hot coil box or a heat preservation cover; The heating temperature of the billet is 1050~1200℃, the temperature of the intermediate billet after rough rolling is in the austenite temperature range of the steel, and it is 10~40℃ above the final temperature of the austenite, and the temperature of the intermediate billet before the entrance of the finishing rolling unit is detected in real time. , the first cooling device is fully opened, and the second intermediate billet cooling device adjusts the opening and closing combination and cooling water flow of each pair of coolers in real time according to the temperature, so that the intermediate billet before the entrance of the finishing mill is cooled to the ferrite phase 0～30℃ above the end temperature. The invention solves the problems in the prior art that the temperature of the intermediate billet before finishing rolling is inaccurately controlled, the temperature of the strip billet is uneven, and the cooling swing time between rough rolling and finishing rolling is too long.
Description
Technical Field
The invention relates to a temperature control method for rolling strip steel in a ferrite area, belonging to the technical field of metal processing.
Background
The ferrite Rolling process (also called Warm Rolling) was developed by the research center of iron and steel in Belgium at the end of the 20 th century 80 s, and aims to produce hot rolled plates with excellent structure and performance which can be directly used or used as a raw material for cold Rolling production. The method for producing the ferrite area hot rolled strip steel has the characteristics of small deformation resistance in the rolling process, easy acid cleaning and clearing, higher elongation, higher deep drawing performance r value and the like, is favorable for producing thin hot rolled strip steel, and improves the surface quality of the strip steel. Compared with the traditional austenite rolling process, the ferrite rolling process can shorten the process flow and reduce the loss of the roller, thereby reducing the heating temperature and the production cost.
However, when ferrite rolling is performed on the conventional strip steel hot continuous rolling production line, because the distance between the heat-insulating cover or the hot coil box and the end-cutting shears on the conventional strip steel hot continuous rolling production line is very short, it is difficult to arrange a cooling device with a slightly longer cooling length, so that the intermediate blank needs to be cooled by air for a longer time between the heat-insulating cover or the hot coil box and the end-cutting shears, and the strip blank can reach the proper temperature before entering the finishing mill group. However, when air cooling is adopted for cooling, the defects of inaccurate temperature control, high energy consumption and large investment before finish rolling exist; in addition, the intermediate slab is thick, which tends to cause non-uniformity in strip temperature, and the time taken for air cooling is long (i.e., the cooling swing time between rough rolling and finish rolling is long), which also reduces the production efficiency.
In order to reduce the production cost and realize stable, continuous and reliable industrial production, various scholars and engineers are continuously making efforts and exploring to find a new technology for ferrite rolling on the traditional strip steel hot continuous rolling production line, so as to achieve the purposes of simplifying the process, reducing the energy consumption and cost, improving the efficiency and the like and promote the industrial application of ferrite rolling.
Disclosure of Invention
The invention provides a method which can improve the production efficiency when ferrite rolling is carried out on the traditional strip steel hot continuous rolling production line and the temperature of a strip blank is accurately controlled before the strip blank enters a finishing mill group.
In order to achieve the purpose, the invention adopts the following technical scheme: a temperature control method for rolling strip steel in a ferrite area is characterized in that a hot coil box or a heat preservation cover is arranged between a roughing mill and a finishing mill group of a hot rolling production line, a first intermediate blank cooling device is arranged at an outlet of the roughing mill, and a second intermediate blank cooling device is arranged at an outlet of the hot coil box or the heat preservation cover; the first and second intermediate blank cooling devices comprise at least 3 pairs of coolers, and each pair of coolers is symmetrically arranged on the intermediate blank to be cooled up and down;
controlling the heating temperature of the steel billet to be 1050-1200 ℃, and controlling the temperature of the intermediate billet after rough rolling to be within the austenite temperature range of steel and Ac3At a temperature of 10 to 40 ℃ above, wherein Ac3Is the end temperature of ferrite transformation to austenite;
the second intermediate billet cooling device adjusts the opening and closing combination and the cooling water flow of each pair of coolers in real time according to the intermediate billet temperature before the inlet of the finishing mill group detected in real time, namely, adjusts the temperature of the intermediate billet by adopting small flow, so that the intermediate billet before the inlet of the finishing mill group is cooled to Ac3fAbove 0-30 ℃ and Ac3fIs ferrite transformation termination temperature.
The inventor carries out intensive research and experiments on the existing process, and the existing process generally adopts the air cooling mode to cool the strip steel for a long time after a roughing mill group, thereby influencing the rolling efficiency. If the water cooling mode is adopted, the distance between the roughing mill and the hot coil box or the heat-insulating cover is short, so the water cooling time is short, the strip steel is still thick after roughing, the temperature return phenomenon occurs after water cooling, and the temperature cannot be accurately controlled. The invention realizes the temperature control of the intermediate billet entering the finishing mill group by adding two intermediate billet cooling devices, wherein the first intermediate billet cooling device u opens all coolers and rapidly cools and reduces the temperature of the intermediate billet by adopting large flow, the head and tail positions of the intermediate billet are changed at the hot coil box to realize the uniform temperature of the intermediate billet, and then the second intermediate billet cooling device accurately adjusts the temperature of the intermediate billet by adopting small flow, thus not only ensuring the accurate temperature control, but also greatly improving the production efficiency compared with the mode of adopting air cooling. The invention solves the problems of inaccurate temperature control of the intermediate billet before finish rolling, non-uniform strip billet temperature and overlong cooling swing time between rough rolling and finish rolling in the prior art, and can be used for producing deep drawing, ultra-deep drawing IF steel, low-carbon aluminum killed steel, medium-carbon steel and the like.
The further improvement of the technical scheme is as follows: the distance between the inlet of the first intermediate blank cooling device and the outlet of the roughing mill is as follows:
wherein v is1Speed of steel throwing for last pass of roughing mill, v0The stable rolling speed of the roughing mill is shown, a is the acceleration of the linear speed of the roller of the roughing mill before steel polishing, and x is a distance design allowance and is between 0 and 10 m.
The reason is that the temperature inside the intermediate billet from the roughing mill is high, and the intermediate billet can return to the surface of the intermediate billet, so that the intermediate billet is conveyed for a certain distance and then cooled, the cooling efficiency can be improved, and the uniformity of the temperature after cooling can be improved.
Compared with the prior art, the invention has the following advantages:
1) the invention can adapt to the high-efficiency production in the rolling process of the ferrite area, and the last pass of the roughing mill is subjected to reduced-speed rolling, thereby ensuring the rolling production capacity of the ferrite area.
2) The first intermediate billet cooling device is arranged at a distance behind the roughing mill, so that the surface of the intermediate billet is heated again, the cooling efficiency of the intermediate billet is high, the cooling water consumption of the first intermediate billet cooling device is small after roughing, the speed of the intermediate billet entering a finishing mill group is low, the second intermediate billet cooling device can realize low flow control, and the cooling water consumption and the water supply energy consumption are reduced totally.
3) The invention can improve the control precision of the intermediate billet temperature and the performance uniformity of products by combining a plurality of groups of coolers and the small flow of a single cooler.
4) The invention can reduce the generation of iron scale on the surface of the strip steel in the finish rolling process and improve the surface quality of the strip steel.
5) The invention can be applied to different strip steel continuous rolling production lines, strictly realizes the temperature separation of austenite rolling and ferrite rolling, prevents mixed crystals caused by austenite-ferrite two-phase rolling, optimizes the microstructure and the forming performance of the strip steel and the like.
6) The invention can reduce the rolling pressure in the hot rolling process, and can further reduce the energy consumption in the cold rolling process and save energy through the recrystallization and the grain growth of the strip steel caused by high-temperature coiling waste heat.
7) The method can ensure that the coiling temperature is 10-80 ℃ above the annealing recrystallization temperature, can fully utilize the afterheat after rolling to realize the recovery and growth of ferrite grains, saves subsequent annealing, improves the tissue and mechanical property of the strip steel, and even realizes the replacement of 'hot' for 'cold'.
Drawings
Fig. 1 is a schematic diagram of a first embodiment of the present invention.
Fig. 2 is a schematic diagram of a second embodiment of the present invention.
Reference numerals: the device comprises a roughing mill 3, a first intermediate billet cooling device 4-1, a second intermediate billet cooling device 4-2, a hot coil box 5, a heat preservation cover 6, a crop shear 7, a finish descaling unit 8 and a finishing mill group 9.
Detailed Description
Example one
As shown in fig. 1, IF steel (ultra-low carbon) slabs are selected for the ferrite rolling in the embodiment, and the slab comprises the following components in percentage by weight: less than or equal to 0.01 percent of C, less than or equal to 0.03 percent of Si, less than or equal to 0.2 percent of Mn, less than or equal to 0.02 percent of P, less than or equal to 0.015 percent of S, less than or equal to 0.06 percent of Al, less than or equal to 0.004 percent of N, less than or equal to 0.12 percent of Ti, and the balance of Fe. At a cooling rate of 1-3 ℃/s, the ferrite phase transformation termination temperature Ac3fAt 860 ℃ of austenitized Ac3The temperature is 910 ℃; the annealing recrystallization temperature after cold rolling is more than 660 ℃. The stable rolling speed of the roughing mill is 5.5m/s, the final pass steel throwing speed of the roughing mill is 1.3m/s, and the linear speed of the rollers of the roughing mill is added before steel throwingSpeed of 1m/s2。
In the embodiment, a hot coil box 5 is arranged between a roughing mill 3 and a finishing mill group 9 of a hot rolling production line, a first intermediate billet cooling device 4-1 is arranged at the outlet of the roughing mill 3, and a second intermediate billet cooling device 4-2 is arranged at the outlet of the hot coil box 5; the first intermediate blank cooling device 4-1 is limited in position only by 5 pairs of coolers, and the second intermediate blank cooling device 4-2 comprises 3 pairs of coolers, wherein each pair of coolers is arranged on the intermediate blank to be cooled in an up-and-down symmetrical manner;
the temperature control method for rolling the strip steel in the ferrite area comprises the following steps:
and (3) selecting qualified IF steel billets, feeding the IF steel billets into a heating furnace, heating to 1050-1150 ℃, preserving heat for 1.5-2 hours, and discharging. After primary descaling, the steel billet is sent to a roughing mill 3 for multi-pass reciprocating rolling, the IF steel billet is rolled into an intermediate billet with the thickness of 25-45 mm, the temperature of the intermediate billet after rough rolling is controlled in the austenite temperature range of steel and is more than 930 ℃ (Ac3 and more than 20 ℃), wherein Ac3Is the end temperature of ferrite transformation to austenite;
the first intermediate billet cooling device 4-1 opens 5 pairs of coolers completely, and rapidly cools and reduces the temperature of the intermediate billet in a large flow, the second intermediate billet cooling device 4-2 adjusts the opening and closing combination and the cooling water flow of each pair of coolers according to the intermediate billet temperature in front of the inlet of the finishing mill group 9 detected in real time, and precisely adjusts the temperature of the intermediate billet in a small flow, so that the intermediate billet in front of the inlet of the finishing mill group 9 is cooled to Ac3fAbove 0-30 ℃ and Ac3fIs ferrite transformation termination temperature. In the embodiment, the number of cooling nozzles and the flow rate of the cooler of the second intermediate blank cooling device 4-2 are switched on and off, so that the intermediate blank is cooled to about 900 ℃, the intermediate blank then enters the hot coil box 5, the tail of the intermediate blank with lower temperature enters the second intermediate blank cooler first after being uncoiled, the number of the cooler nozzles is 3, and the intermediate blank is further cooled to about 880 ℃.
In the embodiment, the first intermediate blank cooling device 4-1 is used for performing quick coarse cooling, and then the head and tail positions of the intermediate blank are changed through the hot coil box 5, so that the temperature uniformity of the intermediate blank is realized, and the guarantee is provided for accurate temperature adjustment of the subsequent second intermediate blank cooling device 4-2, so that the temperature control of the intermediate blank is accurate, and the rolling effect of a ferrite area is ensured. Then, the intermediate billet is subjected to crop shearing 7 and fine descaling 8, and then enters a complete ferrite area (below 860 ℃) to be rolled in a ferrite area of a finishing mill group 9. And then, the strip steel enters a conveying roller way and a cooling device after rolling, and the strip steel enters a coiling machine to be coiled within 690-760 ℃.
The embodiment not only can reform the traditional hot rolling production line, thereby being suitable for rolling strip steel in a ferrite area, but also has good guiding and revealing effects on a newly-built hot rolling production line.
Preferably, the distance between the inlet of the first intermediate blank cooling device and the outlet of the roughing mill is:
wherein v is1Speed of steel throwing for last pass of roughing mill, v0The stable rolling speed of the roughing mill is shown, a is the acceleration of the linear speed of the roller of the roughing mill before steel polishing, x is a distance design allowance and is between 0 and 10m, and x is 7 in the embodiment.
The above formula in this example is an empirical formula, which is a summary of the long term production practice of the applicant. Because the intermediate billet is reduced to a lower running speed and the internal temperature of the intermediate billet is returned to the surface, the first intermediate billet cooling device 4-1 can use the minimum water quantity to achieve the aim of rapid cooling, and can keep the temperature of the intermediate billet uniform, thereby ensuring the temperature adjustment accuracy and uniformity of the second intermediate billet cooling device 4-2.
Example two
In the embodiment, a 08Al low-carbon steel slab is selected for a ferrite area rolling test, and the slab comprises the following components in percentage by weight: less than or equal to 0.08 percent of C, less than or equal to 0.40 percent of Mn, less than or equal to 0.025 percent of P, less than or equal to 0.02 percent of S and less than or equal to 0.04 percent of Al; the balance being Fe. Under the cooling speed of 1-3 ℃/s, the phase transition temperature Ar3f is 820 ℃, the austenitizing Ac3 temperature is 880 ℃, and the annealing recrystallization temperature after cold rolling is above 620 ℃.
As shown in fig. 2, in the present embodiment, the heat coil box of the first embodiment is replaced with a heat-insulating cover 6 to reduce the temperature difference between the head and the tail of the slab. The stable rolling speed of the roughing mill is 5.5m/s, the final pass steel throwing speed of the roughing mill is 1m/s, and the acceleration of the linear speed of the roller of the roughing mill before steel throwing is 1m/s2.
The temperature control method for rolling the strip steel in the ferrite area comprises the following steps:
as shown in figure 2, a first intermediate billet cooling device 4-1 and a second intermediate billet cooling device 4-2 are arranged at reasonable positions between the roughing mill 3 and the finishing mill group 9, and a heat-insulating cover 6 is arranged between the two groups of cooling sections. And (3) selecting qualified IF steel plate blanks, sending the IF steel plate blanks into a heating furnace 1, heating to 1150-1180 ℃, and carrying out heat preservation until the temperature of the steel blanks is uniform, and then tapping.
And after primary descaling, the hot steel billet is sent to a roughing mill 3 for repeated multi-pass rolling, and the IF steel billet is rolled into an intermediate billet with the thickness of 28-52 mm. Calculating the distance between the first intermediate blank cooling device 4-1 and the outlet of the roughing mill 3 according to the rolling speed of the roughing mill, the steel throwing speed and the acceleration of the rolling mill as follows:
wherein v is1Speed of steel throwing for last pass of roughing mill, v0The stable rolling speed of the roughing mill is shown, a is the acceleration of the linear speed of the roller of the roughing mill before steel polishing, x is a distance design allowance and is between 0 and 10m, and x is 7 in the embodiment.
The number of the first intermediate slab cooling devices 4-1 was 8, and all the devices were opened to cool the intermediate slab from 1010 ℃ to about 920 ℃. And the intermediate billet enters a heat-preserving cover 6, then enters a second intermediate billet cooling device 4-2, the number of the cooling spray nozzles and the flow of the cooler are opened and closed according to the intermediate billet temperature in front of the inlet of the finishing mill group 9 detected in real time, and the intermediate billet is further cooled to about 830 ℃. Then the intermediate billet is sent into a finishing mill group 9 after head cutting and scale removing 7 and finishing descaling 8, and the intermediate billet enters a complete vegetarian area (below 810 ℃) for rolling. And then, the strip steel enters a conveying roller way and a cooling device after rolling, and the strip steel enters a coiling machine to be coiled after the temperature of the strip steel is controlled to be 650-710 ℃.
The present invention is not limited to the specific technical solutions described in the above embodiments, and other embodiments may be made in the present invention in addition to the above embodiments. It will be understood by those skilled in the art that various changes, substitutions of equivalents, and alterations can be made without departing from the spirit and scope of the invention.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010582049.8A CN113828643A (en) | 2020-06-23 | 2020-06-23 | Temperature control method for rolling strip steel in ferrite area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010582049.8A CN113828643A (en) | 2020-06-23 | 2020-06-23 | Temperature control method for rolling strip steel in ferrite area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113828643A true CN113828643A (en) | 2021-12-24 |
Family
ID=78964201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010582049.8A Pending CN113828643A (en) | 2020-06-23 | 2020-06-23 | Temperature control method for rolling strip steel in ferrite area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113828643A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114618895A (en) * | 2022-04-11 | 2022-06-14 | 福建三宝特钢有限公司 | Hot rolled strip rolling system based on dynamic adjustment |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0537398A1 (en) * | 1990-07-09 | 1993-04-21 | ARMCO Inc. | Method of making regular grain oriented silicon steel without a hot band anneal |
| US6280542B1 (en) * | 1996-06-07 | 2001-08-28 | Corus Technology Bv | Method and apparatus for the manufacture of a steel strip |
| KR20010112747A (en) * | 2000-06-15 | 2001-12-22 | 권수식 | The method of manufacture Zn-Ni alloyed electro-galvanized steel with superior image clarity |
| US20050155740A1 (en) * | 2002-09-19 | 2005-07-21 | Giovanni Arvedi | Process and production line for manufacturing ultrathin hot rolled strips based on the thin slab technique |
| CN101148735A (en) * | 2007-10-17 | 2008-03-26 | 莱芜钢铁集团有限公司 | Method for rolling thick specification low-alloy structure steel plate by using middle and thin plate blank |
| CN101347792A (en) * | 2008-09-04 | 2009-01-21 | 唐山钢铁股份有限公司 | Technique for medium thin slab continuous rolling and producing Nb-microalloying steel and devcie |
| CN101618396A (en) * | 2008-06-30 | 2010-01-06 | 上海梅山钢铁股份有限公司 | Method for rolling interstitial free steel ferrite on traditional hot rolling mills |
| CN101972782A (en) * | 2010-09-15 | 2011-02-16 | 北京科技大学 | Device and method for cooling intermediate rolled blank of hot rolled strip |
| CN102115808A (en) * | 2010-11-17 | 2011-07-06 | 莱芜钢铁股份有限公司 | Ferrite region rolling temperature control system |
| CN109174981A (en) * | 2018-08-31 | 2019-01-11 | 东北大学 | A kind of hot continuous rolling intermediate blank cooling device and its application method |
| CN111167858A (en) * | 2020-01-03 | 2020-05-19 | 北京科技大学 | Method for headless rolling of ferrite area of ultrathin strip steel |
-
2020
- 2020-06-23 CN CN202010582049.8A patent/CN113828643A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0537398A1 (en) * | 1990-07-09 | 1993-04-21 | ARMCO Inc. | Method of making regular grain oriented silicon steel without a hot band anneal |
| US6280542B1 (en) * | 1996-06-07 | 2001-08-28 | Corus Technology Bv | Method and apparatus for the manufacture of a steel strip |
| KR20010112747A (en) * | 2000-06-15 | 2001-12-22 | 권수식 | The method of manufacture Zn-Ni alloyed electro-galvanized steel with superior image clarity |
| US20050155740A1 (en) * | 2002-09-19 | 2005-07-21 | Giovanni Arvedi | Process and production line for manufacturing ultrathin hot rolled strips based on the thin slab technique |
| CN101148735A (en) * | 2007-10-17 | 2008-03-26 | 莱芜钢铁集团有限公司 | Method for rolling thick specification low-alloy structure steel plate by using middle and thin plate blank |
| CN101618396A (en) * | 2008-06-30 | 2010-01-06 | 上海梅山钢铁股份有限公司 | Method for rolling interstitial free steel ferrite on traditional hot rolling mills |
| CN101347792A (en) * | 2008-09-04 | 2009-01-21 | 唐山钢铁股份有限公司 | Technique for medium thin slab continuous rolling and producing Nb-microalloying steel and devcie |
| CN101972782A (en) * | 2010-09-15 | 2011-02-16 | 北京科技大学 | Device and method for cooling intermediate rolled blank of hot rolled strip |
| CN102115808A (en) * | 2010-11-17 | 2011-07-06 | 莱芜钢铁股份有限公司 | Ferrite region rolling temperature control system |
| CN109174981A (en) * | 2018-08-31 | 2019-01-11 | 东北大学 | A kind of hot continuous rolling intermediate blank cooling device and its application method |
| CN111167858A (en) * | 2020-01-03 | 2020-05-19 | 北京科技大学 | Method for headless rolling of ferrite area of ultrathin strip steel |
Non-Patent Citations (6)
| Title |
|---|
| 刘春华: "工业企业电气调整手册", vol. 1, 30 September 2000, 冶金工业出版社, pages: 761 - 762 * |
| 梁爱生: "轧钢生产新技术600问", vol. 1, 30 September 2004, 冶金工业出版社, pages: 335 * |
| 王国栋;: "新一代控制轧制和控制冷却技术与创新的热轧过程", 东北大学学报(自然科学版), no. 07, 15 July 2009 (2009-07-15), pages 913 - 922 * |
| 赵昆: "铁素体热轧轧制力模型的改进", 轧钢, no. 2, 30 April 2000 (2000-04-30), pages 8 - 25 * |
| 轧制技术及连轧自动化国家重点实验室（东北大学）: "850mm不锈钢两级自动化控制系统研究与应用", vol. 1, 30 September 2014, 冶金工业出版社, pages: 20 - 21 * |
| 魏娇: "析出强化"铁素体+马氏体"双相钢的热轧工艺技术研究", 工程科技Ⅰ辑, no. 5, 1 June 2014 (2014-06-01), pages 32 - 45 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114618895A (en) * | 2022-04-11 | 2022-06-14 | 福建三宝特钢有限公司 | Hot rolled strip rolling system based on dynamic adjustment |
| CN114618895B (en) * | 2022-04-11 | 2022-11-08 | 福建三宝特钢有限公司 | Hot rolled strip rolling system based on dynamic adjustment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20220152674A1 (en) | Endless hot-rolled strip production device and method for ferrite rolling | |
| CN106077085B (en) | A kind of production system and method for low yield strength ratio hot-rolled high-strength anti-seismic steel bar | |
| CN100580102C (en) | Process for producing high strength hardened and tempered steel by steekle mill on-line quenching | |
| CN101181718B (en) | Method for producing wide strip steel by bar strip continuous casting and rolling as well as system therefor | |
| CN1200782C (en) | Method and installation for producing thin flat products | |
| CN114273425B (en) | Continuous casting and rolling production line and production method for avoiding ferrite rolling mixed crystals | |
| CN102513384B (en) | Method for cooling intermediate billet of medium-thickness plate by using equipment for cooling after rolling | |
| CN102581008A (en) | Processing method for producing low-cost high-formability IF (interstitial-free) steel | |
| CN109266815A (en) | The board-shape control method of press quenching high strength steel plate | |
| CN111167858A (en) | Method for headless rolling of ferrite area of ultrathin strip steel | |
| CN103962386A (en) | Oxide scale control method for improving corrosion resistance of hot rolled medium plate | |
| CN102417959A (en) | Method for producing annealing-free hot rolling S50C plate and strip | |
| CN112246869B (en) | Control method for shape of excellent hot-rolled oriented silicon steel | |
| CN110523787A (en) | A kind of hot continuous rolling steel centre base ultra-rapid cooling method | |
| CN201157843Y (en) | System for producing wide strip by thin slab casting and rolling | |
| CN107983771A (en) | The high-strength chill volume hot-rolling method of building concrete fixing piece | |
| CN101792847A (en) | Direct thermal treatment process technology after rolling steel plate | |
| CN113828643A (en) | Temperature control method for rolling strip steel in ferrite area | |
| CN111349759B (en) | Production method of thin-specification wear-resistant steel for DQ (data-on-demand) process | |
| CN107267857A (en) | A kind of 07MnNiMoDR steel plates and its press quenching production method | |
| CN114618883A (en) | Method for improving mechanical property uniformity of micro-alloy high-strength steel hot-rolled steel plate | |
| CN206500438U (en) | A kind of hot rolled steel plate production system | |
| CN106853461A (en) | A kind of hot rolled steel plate production system | |
| CN115069786B (en) | Control method for intermediate cooling and waiting temperature of thick plate | |
| CN112122361B (en) | Laminar cooling control method for preventing medium-high carbon steel from cracking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211224 |