CN102581008A - Processing method for producing low-cost high-formability IF (interstitial-free) steel - Google Patents
Processing method for producing low-cost high-formability IF (interstitial-free) steel Download PDFInfo
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Abstract
The invention relates to a processing method for producing low-cost high-formability IF (interstitial-free) steel, which is based on thin-slab continuous casting and rolling and adopts a ferrite rolling process to produce the IF steel, belonging to the technical field of IF steel production. The processing method comprises the following working procedures of steelmaking, continuous casting, heating, rolling, cooling and coiling. A thin-slab continuous casting machine is adopted, the thickness of a continuous casting slab is at most 100mm, and the charging temperature is at least 880 DEG C. During hot rolling, a roughing mil and a finishing mill keep a continuous rolling relationship and keep micro-tension control, and water cooling equipment is used between the roughing mil and the finishing mill and is used for uniformly reducing the temperature of an intermediate slab with a thickness of 12-25mm from the temperature at least 950 DEG C of the outlet of the roughing mil into the range of 750-850 DEG C. Finish rolling is carried out in a ferrite area, and a lubrication rolling technology is adopted. The coiling temperature is higher and is 680-760 DEG C, slow cooling is carried out after coiling, and thereby an annealing process is finished. The invention provides a method for obtaining high-formability hot rolled sheets without cold rolling and cover annealing. The method has the advantages of being simple in process, low in cost, high in production efficiency, short in flow and the like, and the formability of products is higher.
Description
Technical field
The present invention relates to a kind of processing method of producing low-cost high formability IF steel, adopt ferrite rolling explained hereafter IF steel, belong to IF steel production technical field based on CSP.
Background technology
The IF steel, full name Interstitial-Free Steel, promptly gapless atomic steel is also claimed ultra-low-carbon steel sometimes, has extremely excellent deep drawability, percentage elongation and r value can reach more than 50% and 2.0, on auto industry, have obtained extensive use.At present, the general flow that uses the IF steel to produce the high formability product is steel-making-LF refining-RH refining-continuous casting-heating-austenitic area hot rolling-batch-sour tandem rolling-perhydro bell-type annealing.In the hot rolling stage, because IF steel transformation temperature is very high, Ar3 surpasses 900 ℃, and for avoiding in two-phase section finish to gauge the performance of coiled sheet being caused adverse effect, thick, finish rolling all must be controlled at the austenitic area.For this reason, must adopt higher start rolling temperature guaranteeing finishing temperature more than Ar3, but higher finishing temperature can reduce the plastic strain ratio r of IF steel again.A kind of in addition flow process is: in the hot rolling stage; Roughing is controlled at the austenitic area; And that finish rolling is controlled at ferrite area is rolling, that is: steel-making-LF refining-RH refining-continuous casting-heating-austenitic area roughing-intermediate blank cooling-ferrite area finish rolling-batch-sour tandem rolling-perhydro bell-type annealing.Above-mentioned two kinds of technologies all must could obtain the cold-reduced sheet of high formability through cold rolling and bell-type annealing.
In the background technology; Publication number is the method that the Chinese patent " method of rolling high-strength IF steel in ferrite area " of CN 101693253 A discloses a kind of production hot rolling IF steel plate; This method is in common Nb+Ti-IF steel, to add solution strengthening row alloying elements such as Mn≤1.8% of trace, P≤0.1%, Cr≤0.5%, Mo≤0.5%, to improve the intensity of IF steel.Produce this high-strength IF steel heating-up temperature≤1150 ℃, be incubated 0.5 ~ 1 hour, 1100 ℃ of start rolling temperatures, roughing is carried out in the austenitic area, and the roughing reduction ratio is 80%, with austenite crystal after the refinement roughing; Finish rolling is carried out in that ferrite area is rolling, curls after the laminar flow cooling in finishing temperature≤780 ℃.This method is carried out on the traditional process production line, and steel grade is the Nb+Ti-IF steel, and this method has been stressed lubrication and rolling, rolled back laminar flow cooling capacity, and, adopted the stay-warm case insulation between roughing, the finish rolling.Publication number is the method that the Chinese patent ferrite rolling method of gapless atomic steel " on the traditional hot milling train group realize " of CN 101618396 B discloses a kind of production hot rolling IF steel plate, and the finish rolling that this method mainly solves the rolling existence in austenitic area of traditional I F steel falls into the technical problem of two-phase section easily.On traditional hot milling train group, realize the ferrite rolling method of gapless atomic steel, may further comprise the steps: slab carries out roughing in the roughing unit after the heating furnace heating; In mm finishing mill unit, carry out finish rolling again, through the laminar flow cooling, batch at last then; It is characterized in that: roughing is carried out in the austenitic area, be cooled to after roughing finishes one be essentially ferritic structure temperature, finish rolling is carried out at ferrite area; 1130 ± 20 ℃ of slab heating temperatures, 850 ± 20 ℃ of finish rolling inlet temperatures, 820 ± 20 ℃ of finishing temperatures; 710 ± 20 ℃ of coiling temperatures, intermediate blank thickness are 36-40mm.The present invention mainly carries out the IF steel rolling on traditional hot milling train group.The patent No. is that 98811974.9 Chinese patent " is used to produce the method and apparatus of ferritically rolled steel strip " and discloses the method that is used to produce ferritically rolled steel strip; This method is cast a kind of IF or mild steel molten steel in a continuous casting steel machine; Forming a slab, and utilize casting thermally said slab to be transported through a stove device, just standing breaking down in the rolling device one; And in a final rolling device by finish rolling; Formed ferrite steel band with desired final thickness, in the method, in without a head or half method without a head; Just make slab ground in austenitic range accept rolling in the rolling device; And after being to be rolled in the austenitic range, make slab be cooled to the temperature that steel have ferritic structure basically, in final rolling device, get at least one frame of final rolling device then with said steel band; With 850 ℃ to 600 ℃ temperature rolled steel strip in the ferrite scope, steel band is cooled to one rapidly and is lower than 500 ℃ temperature after leaving final rolling device.
Summary of the invention
The object of the invention provides a kind of processing method of producing low-cost high formability IF steel; Adopt the ferrite rolling explained hereafter based on CSP; Technology is simple, cost is low, the production efficiency advantages of higher, and the product shaping performance is higher, solves the problems referred to above that background technology exists.
Technical scheme of the present invention is:
A kind of method of producing low-cost high formability IF steel adopts the ferrite rolling explained hereafter based on CSP, comprises steel-making, continuous casting, heating, rolling, cooling and curling operation, and each Working Procedure Controlling parameter is following:
(1) steel making working procedure through LF, RH refining, is produced molten steel, and each constituent mass percentage is: C≤0.007%, and Mn 0.10～0.30%, Si≤0.03%, S≤0.007%, P≤0.008%, Als 0.020～0.050%, and all the other are iron;
(2) continuous casting working procedure, continuous casting pulling rate are controlled at 3.0～5.0 meters/minute;
(3) heating process, heating furnace is undertaken by the order of heating, soaking, insulation, remains on heat time heating time 0.3～0.5 hour, and board briquette is heated to 1000～1150 ℃, the slab homogeneous heating, the temperature difference is no more than 20 ℃ on elongated direction, base cross direction;
(4) rolling process, roughing is rolling in the austenitic area; Between roughing, finishing mill, use cooling device to cool off, with the intermediate blank temperature from the roughing mill outlet >=950 ℃ evenly be cooled in 750～850 ℃ of scopes; Lubrication and rolling is adopted in finish rolling, and finishing temperature is controlled at 700～800 ℃;
(5) cooling and curling operation, after the laminar flow cooling, coiling temperature is controlled at 680～760 ℃.
Batch the back that finishes and adopt concentrated the stacking, under the slow cooling situation, accomplish annealing process.
Said steel making working procedure, steelmaking process control [O]≤30ppm, [N]≤30ppm.
Said continuous casting working procedure adopts thin-slab caster, and thickness of strand≤100mm adopts low carbon protective slag to protect.Adopt short flow process continuous casting and rolling technique of sheet bar, continuous casting billet gets into heating process directly into stove, charging temperature >=880 ℃.
Said heating process, stove heating at the bottom of the use tunnel type roller, the slab tapping temperature is 1100 ± 50 ℃.
Said rolling process adopts Tension Control between roughing mill, finishing mill and the thick finishing mill, and roughing mill, finishing mill keep continuous rolling relationship and maintenance to part power control a little; Intermediate blank thickness between roughing mill, the finishing mill is 12～25mm; Lubrication and rolling is adopted in finish rolling, finish rolling reduction ratio＞50%, and 750～850 ℃ of finish rolling inlet temperatures, finishing temperature are 700～800 ℃.
Said refrigerating work procedure, roughing mill, finishing mill chien shih are used water cooling plant, guarantee under roughing mill, finish rolling tandem rolling state rapidly with the intermediate blank temperature by the roughing mill outlet >=950 ℃ of finish rolling inlet temperatures that evenly are cooled to 800～850 ℃.
Said curling operation, coiling temperature adopt the control of " U " shape, and the coiling temperature of band steel toe portion, band steel afterbody≤10 meters length ranges is higher 20～50 ℃ than band steel mid portion, guarantee that the roll coil of strip is cooled to the uniformity of the elongated tissue of band steel after the room temperature, performance.
Product of the present invention, interior tissue major part are the thicker ferrite crystal grains of crystallization again, and deep drawability is higher, performance: Rm≤320MPa, Rel≤280 MPa, percentage elongation>=48%, r value>=1.2.
Good effect of the present invention is:
(1) carry out annealing in process at hot-rolled process, do not need special bell-type annealing operation, production efficiency is high, and cost is low.
(2) between roughing, finishing mill, use cooling device, reduce the rolling temperature of finishing mill, the finish rolling stage adopts ferrite area rolling, has reduced rolling load.Because ferrite is different with austenitic crystal structure, the more face-centred cubic austenite matrix slip system of the ferrite translation gliding of body-centered cubic structure system is many, thus in certain temperature range easy deformation, thereby reduced resistance of deformation.
The selection of (3) finish rolling inlet temperature, finishing temperature, coiling temperature is for controlled rolling and controlled cooling, microstructure that obtains hoping and mechanical property.
(4) can reduce the heating-up temperature of slab, this is energy savings not only, also can improve the quality of products.Because the rolling start rolling temperature than pair rolling of ferrite area is low, thereby can reduce the heating-up temperature of slab.Low heating-up temperature can reduce the formation of the second phase particle of small and dispersed, thereby reduces recrystallization temperature, and is favourable to properties of product.
(5) can improve service life of roll.Lower rolling temperature can reduce the thermic load of roll.In addition, resistance of deformation reduces also to have alleviated the wearing and tearing of roll with lubricant method etc., thereby has prolonged the service life of roll.
(6) can improve the deep drawability of coiled sheet, part replaces cold-reduced sheet.After the traditional processing technology hot rolling because of the existence of phase transition process can't be formed be beneficial to deep drawability 111) //ND texture; And the rolling finish rolling of ferrite area is carried out after phase transformation, thus can in hot rolled plate, form favourable { 111 } of deep drawability //thereby ND texture makes hot rolled plate have good punching performance.
The present invention is based on bar strip continuous casting and rolling flow path and adopt the IF steel of ferrite rolling explained hereafter high formability, have that technology is simple, cost is low, the production efficiency advantages of higher, the product shaping performance is higher.
The specific embodiment:
Below through embodiment the present invention is described further.
Embodiment one, the qualified molten steel of steel mill's refining, and continuous casting becomes the 70*1270mm slab, and the chemical composition mass percent is C:0.002%, Si:0.013%, Mn:0.15%, P:0.006%, S:0.004%, Al:0.040%, surplus is Fe; Continuous casting billet is heated to 1080 ℃, and the steel billet back of coming out of the stove gets into two roughing mills, and roughing is later through middle water-cooled to 825～840 ℃; The finish rolling de-scaling gets into five finishing mills and is rolled 775～790 ℃ of finishing temperatures, finished product thickness 4.0mm; It is cold to get into laminar flow after finish rolling is accomplished; But be cooled to 700～720 ℃ and batch, the cooling in heap air cooling naturally cools to room temperature after the rolling.Chemical composition is listed in table 1, and technological parameter is listed in table 2, and the stocking mechanical property is seen table 3.
Embodiment two, the qualified molten steel of steel mill's refining, and continuous casting becomes the 70*1270mm slab, and the chemical composition mass percent is C:0.002%, Si:0.010%, Mn:0.12%, P:0.005%, S:0.006%, Al:0.052%, surplus is Fe; Continuous casting billet is heated to 1110 ℃, and the steel billet back of coming out of the stove gets into 2 roughing mills, and roughing is later through middle water-cooled to 810～830 ℃; The finish rolling de-scaling gets into 5 finishing mills and is rolled 760～780 ℃ of finishing temperatures, finished product thickness 4.0mm; After accomplishing, finish rolling gets into the laminar flow cooling; Be cooled to 700～720 ℃ and batch, the cooling in heap air cooling naturally cools to room temperature after the rolling.Chemical composition is listed in table 1, and technological parameter is listed in table 2, and the stocking mechanical property is seen table 3.
Embodiment three, the qualified molten steel of steel mill's refining, and continuous casting becomes the 70*1270mm slab, and the chemical composition mass percent is C:0.003%, Si:0.12%, Mn:0.16%, P:0.006%, S:0.005%, Al:0.034%, surplus is Fe; Continuous casting billet is heated to 1070 ℃, gets into 2 roughing mills after steel billet is come out of the stove, and roughing is cooled off through middle later; Be cooled to 800～820 ℃, get into 5 finishing mills after the finish rolling de-scaling and be rolled 760～780 ℃ of finishing temperatures; Finished product thickness 3.5mm; Finish rolling is accomplished the back and is got into laminar flow and cool off air cooling to 720～740 and ℃ batch, and the cooling in heap air cooling naturally cools to room temperature after the rolling.Chemical composition is listed in table 1, and technological parameter is listed in table 2, and the stocking mechanical property is seen in the table 3.
The present invention is based on bar strip continuous casting and rolling flow path and adopt the IF steel of ferrite rolling explained hereafter high formability, have that technology is simple, cost is low, the production efficiency advantages of higher, the product shaping performance is higher.
Claims (8)
1. processing method of producing low-cost high formability IF steel is characterized in that adopting ferrite rolling explained hereafter IF steel based on CSP, comprises steel-making, continuous casting, heating, rolling, cooling and curling operation, and each Working Procedure Controlling parameter is following:
(1) steel making working procedure through LF, RH refining, is produced molten steel, and each constituent mass percentage is: C≤0.007%, and Mn 0.10～0.30%, Si≤0.03%, S≤0.007%, P≤0.008%, Als 0.020～0.050%, and all the other are iron;
(2) continuous casting working procedure, continuous casting pulling rate are controlled at 3.0～5.0 meters/minute;
(3) heating process, heating furnace is undertaken by the order of heating, soaking, insulation, remains on heat time heating time 0.3～0.5 hour, and board briquette is heated to 1000～1150 ℃, the slab homogeneous heating, the temperature difference is no more than 20 ℃ on elongated direction, base cross direction;
(4) rolling process, roughing is rolling in the austenitic area; Between roughing, finishing mill, use cooling device to cool off, with the intermediate blank temperature from the roughing mill outlet >=950 ℃ evenly be cooled in 750～850 ℃ of scopes; Lubrication and rolling is adopted in finish rolling, and finishing temperature is controlled at 700～800 ℃;
(5) cooling and curling operation, after the laminar flow cooling, coiling temperature is controlled at 680～760 ℃.
2. a kind of according to claim 1 processing method of producing low-cost high formability IF steel is characterized in that batching the concentrated stacking of back employing that finishes, and under the slow cooling situation, accomplishes annealing process.
3. a kind of according to claim 1 or claim 2 processing method of producing low-cost high formability IF steel is characterized in that said steel making working procedure, steelmaking process control [O]≤30ppm, [N]≤30ppm.
4. a kind of according to claim 1 or claim 2 processing method of producing low-cost high formability IF steel; It is characterized in that said continuous casting working procedure, adopt thin-slab caster, thickness of strand≤100mm; Adopt low carbon protective slag to protect; Adopt short flow process continuous casting and rolling technique of sheet bar, continuous casting billet gets into heating process directly into stove, charging temperature>=880 ℃.
5. a kind of according to claim 1 or claim 2 processing method of producing low-cost high formability IF steel is characterized in that said heating process, stove heating at the bottom of the use tunnel type roller, and the slab tapping temperature is 1100 ± 50 ℃.
6. a kind of according to claim 1 or claim 2 processing method of producing low-cost high formability IF steel; It is characterized in that said rolling process; Adopt Tension Control between roughing mill, finishing mill and the thick finishing mill, roughing mill, finishing mill keep continuous rolling relationship and maintenance to part power control a little; Intermediate blank thickness between roughing mill, the finishing mill is 12～25mm; Lubrication and rolling is adopted in finish rolling, finish rolling reduction ratio＞50%, and 750～850 ℃ of finish rolling inlet temperatures, finishing temperature are 700～800 ℃.
7. a kind of according to claim 1 or claim 2 processing method of producing low-cost high formability IF steel; It is characterized in that said refrigerating work procedure; Roughing mill, finishing mill chien shih are used water cooling plant, guarantee under roughing mill, finish rolling tandem rolling state rapidly with the intermediate blank temperature by the roughing mill outlet >=950 ℃ of finish rolling inlet temperatures that evenly are cooled to 800～850 ℃.
8. a kind of according to claim 1 or claim 2 processing method of producing low-cost high formability IF steel; It is characterized in that said curling operation; Coiling temperature adopts the control of " U " shape; The coiling temperature of band steel toe portion, band steel afterbody≤10 meters length ranges, higher 20～50 ℃ than band steel mid portion, guarantee that the roll coil of strip is cooled to the uniformity of the elongated tissue of band steel after the room temperature, performance.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4817703A (en) * | 1986-11-06 | 1989-04-04 | Sms Schloemann-Siemag Aktiengesellschaft | Strip casing unit with downstream multi-stand continuous rolling mill |
| CN1586752A (en) * | 2004-08-03 | 2005-03-02 | 唐山钢铁股份有限公司 | Method for producing thin plate blank continuous casting and continuous rolling low carbon steel ferrite |
| CN1974824A (en) * | 2006-12-18 | 2007-06-06 | 马鞍山钢铁股份有限公司 | Continuous casting and rolling process for producing thin IF billet |
| 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 |
-
2012
- 2012-03-01 CN CN2012100514792A patent/CN102581008A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4817703A (en) * | 1986-11-06 | 1989-04-04 | Sms Schloemann-Siemag Aktiengesellschaft | Strip casing unit with downstream multi-stand continuous rolling mill |
| CN1586752A (en) * | 2004-08-03 | 2005-03-02 | 唐山钢铁股份有限公司 | Method for producing thin plate blank continuous casting and continuous rolling low carbon steel ferrite |
| CN1974824A (en) * | 2006-12-18 | 2007-06-06 | 马鞍山钢铁股份有限公司 | Continuous casting and rolling process for producing thin IF billet |
| 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 |
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Application publication date: 20120718 |