CN103272843B - Production and rolling method for 4-5mm ultra-thin slabs - Google Patents
Production and rolling method for 4-5mm ultra-thin slabs Download PDFInfo
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- CN103272843B CN103272843B CN201310243537.6A CN201310243537A CN103272843B CN 103272843 B CN103272843 B CN 103272843B CN 201310243537 A CN201310243537 A CN 201310243537A CN 103272843 B CN103272843 B CN 103272843B
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Abstract
The invention belongs to the technical field of smelting and steel rolling and particularly relates to a production and rolling method for 4-5mm ultra-thin slabs. The method comprises the steps of (1) adjusting work equipment; (2) adjusting the roller convexity and roasting rollers; (3) determining parameters and performing rolling. The method is used for producing 4-5mm ultra-thin slabs, so that production of the ultra-thin slabs is achieved, good theoretical reference and instance analysis are provided for production of original ultrathin smooth steel slab products of same industries, production accuracy and stability of medium-thick slabs of thin specifications are improved, and apparent popularization and application prospects are provided. Compared with production methods for rolling slabs, the production and rolling method for slabs of 4-5mm ultrathin specifications has the advantages that processes such as uncoiling and straightening are omitted, energy consumption is reduced for the society, costs are reduced for customers, the flexibility of orders is improved, and good economic benefits and social benefits are obtained.
Description
Technical field
The invention belongs to and smelt steel rolling technology technical field, be specifically related to a kind of production milling method of 4-5mm Ultra-thin flat board.
Background technology
Commercially available steel plate has the thin specification steel plate of 6mm, but each big steel manufacturer encounters bottleneck when producing 4mm, 5mm Ultra-thin steel plate.4mm, 5mm Ultra-thin steel plate is because passage rolled piece is thin, temperature drop fast in the production operation of rolling, and steel plate is comparatively responsive to variations in temperature, and finishing mill Strip Shape Control difficulty is large.Easily there is Steel Plate Guide Drill roller-way seam, backplate seam in the production operation of rolling, scrape the fault in productions such as frame, production is caused to have some setbacks, so 4-5mm Ultra-thin Plate Production control difficulty is large, 4mm, 5mm Ultra-thin is vacancy product in cut deal always, without example reference, there is not the appearance of 4-5mm Ultra-thin Yuanping City steel plate at present yet.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides a kind of production milling method of 4-5mm Ultra-thin flat board, the method overcome 4-5mm Ultra-thin flat board and produce the plate shape problem rambunctious such as nose, wave, discount and camber, wooden dipper song in process of production.
The production milling method of 4-5mm Ultra-thin flat board of the present invention, comprises following step:
(1) working equipment is adjusted;
(2) dancer rools convexity, scalds roller;
(3) determine parameter, be rolled.
Step (1) adjustment working equipment: according to milling train installation accuracy, fit clearance, to stress, the Dynamic wear of working roll and working roll, working roll and backing roll, working roll and memorial archway lining board clearance, measure and revise slide plate size, measure and revise slide plate size, eliminating the axial angle of roll shop building.
Step (2) dancer rools convexity: measure according to the abrasion condition of different amounts of rolling to upper working rolls and lower working rolls and analyze, set up Dynamic wear parameter, according to roll wear rule, thermal expansion rule, breaker roll convexity carries out dynamic analysis, according to the Changing Pattern of rolling specs and roll crown, boiling hot roller technological parameter and requirement are: before rolling 4-5mm plate, prepare rolling Transition Materials, the thickness of Transition Materials is 6-8mm, scalding the roller time is that replacing working roll 3 hours or rolling 180-220 prop up steel, then rolling 4-5mm plate.
Step (3) is according to process conditions and operation level of control, selected steel plate length, can avoid yielding poorly during the machine caused because steel plate is too short, or the long steel plate temperature drop caused of steel plate is fast for desired value with 20-25 rice, head and tail temperature difference is large, and plate shape is wayward waits a production difficult problem; Blank substance is controlled at 1.5-2.0 ton, and according to formulae discovery, mill rolling force, roll torque is checked, determine billet size, temperature schedule, RPM schedule and THICKNESS CONTROL, rolling;
The process parameter control of steel rolling process is as follows: be heated to 1100-1180 DEG C in heating furnace after, carry out roughing, rough rolling step ensures two reductions in pass and reaches or surpasses 25mm, roughing intermediate blank out enters finishing mill, start rolling temperature is not less than 1050 DEG C, and finishing temperature then controls between 850-880 DEG C.
Preferably, in step (2), Transition Materials is 6mm.
In step (3), selection slab thickness is the material type of 135mm.
In step (3), selected 5mm steel plate length is 25 meters, and 4mm steel plate length is 23 meters.
Beneficial effect of the present invention is, above-mentioned method is adopted to produce 4-5mm Ultra-thin dull and stereotyped, the flat board achieving Ultra-thin is produced, produce very thin Yuanping City steel sheet product for the same industry and provide good theoretical reference and instance analysis, drive the lifting of Thin Specs Heavy Plate Production precision and stability, there is obvious promotion and application prospect.
4-5mm Ultra-thin of the present invention flat board is compared with roll bending, decreases the operation such as uncoiling, aligning, per tonly saves the expenses about 100 yuan such as uncoiling, aligning, shearing, is that society reduces energy resource consumption, reduces cost; 4-5mm flat board is often opened substance and is only about 0.5 ton, and roll bending of comparing improves the flexibility of order, achieves good economic benefit and social benefit.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further described, so that those skilled in the art more understands the present invention, but does not therefore limit the present invention.
embodiment 1
The production milling method of 4-5mm Ultra-thin flat board, comprises following step:
(1) working equipment is adjusted;
(2) dancer rools convexity, scalds roller;
(3) determine parameter, be rolled.
Step (1) adjustment working equipment: according to milling train installation accuracy, fit clearance, to stress, the Dynamic wear of working roll and working roll, working roll and backing roll, working roll and memorial archway lining board clearance, measure and revise slide plate size, measure and revise slide plate size, eliminating the axial angle of roll shop building;
Step (2) dancer rools convexity: measure according to the abrasion condition of different amounts of rolling to upper working rolls and lower working rolls and analyze, set up Dynamic wear parameter, according to roll wear rule, thermal expansion rule, breaker roll convexity carries out dynamic analysis, according to the Changing Pattern of rolling specs and roll crown, scald roller technological parameter and requirement is: before rolling 4-5mm plate, prepare rolling Transition Materials, the thickness of Transition Materials is 6mm, scalding the roller time is rolling 200 steel, then rolling 4-5mm plate;
Step (3) is according to process conditions and operation level of control, and selected steel plate length, can be avoided yielding poorly during the machine caused because steel plate is too short for desired value with 23 meters, or the long steel plate temperature drop caused of steel plate is fast, and head and tail temperature difference is large, and plate shape is wayward waits a production difficult problem; Blank substance is controlled at about 1.6 tons, and according to formulae discovery, mill rolling force, roll torque is checked, determine billet size, temperature schedule, RPM schedule and THICKNESS CONTROL, rolling;
The process parameter control of steel rolling process is as follows: in heating furnace, be heated to about 1100 DEG C, carry out roughing, rough rolling step ensures two reductions in pass and reaches or surpasses 25mm, roughing intermediate blank out enters finishing mill, start rolling temperature is not less than 1050 DEG C, and finishing temperature then controls at about 850 DEG C.
embodiment 2
The production milling method of 4-5mm Ultra-thin flat board, comprises following step:
(1) working equipment is adjusted;
(2) dancer rools convexity, scalds roller;
(3) determine parameter, be rolled.
Step (1) adjustment working equipment: according to milling train installation accuracy, fit clearance, to stress, the Dynamic wear of working roll and working roll, working roll and backing roll, working roll and memorial archway lining board clearance, measure and revise slide plate size, measure and revise slide plate size, eliminating the axial angle of roll shop building;
Step (2) dancer rools convexity: measure according to the abrasion condition of different amounts of rolling to upper working rolls and lower working rolls and analyze, set up Dynamic wear parameter, according to roll wear rule, thermal expansion rule, breaker roll convexity carries out dynamic analysis, according to the Changing Pattern of rolling specs and roll crown, scald roller technological parameter and requirement is: before rolling 4-5mm plate, prepare rolling Transition Materials, the thickness of Transition Materials is 6mm, scald the roller time for changing working roll 3 hours, then rolling 4-5mm plate;
Step (3) is according to process conditions and operation level of control, and selected steel plate length, can be avoided yielding poorly during the machine caused because steel plate is too short for desired value with 23 meters, or the long steel plate temperature drop caused of steel plate is fast, and head and tail temperature difference is large, and plate shape is wayward waits a production difficult problem; Blank substance is controlled at about 1.5 tons, and according to formulae discovery, mill rolling force, roll torque is checked, determine billet size, temperature schedule, RPM schedule and THICKNESS CONTROL, rolling;
The process parameter control of steel rolling process is as follows: in heating furnace, be heated to about 1180 DEG C, carry out roughing, rough rolling step ensures two reductions in pass and reaches or surpasses 25mm, roughing intermediate blank out enters finishing mill, finishing mill start rolling temperature about 1080 DEG C, finishing temperature then controls at about 860 DEG C.
The dull and stereotyped rolling procedure of 4mmQ345B
The all technicals such as production rolling 4mm very thin Yuanping City steel plate thickness, plate shape, unevenness, mechanical property meet respective country standard, and qualification rate is stablized.
embodiment 3
The production milling method of 4-5mm Ultra-thin flat board, comprises following step:
(1) working equipment is adjusted;
(2) dancer rools convexity, scalds roller;
(3) determine parameter, be rolled.
Step (1) adjustment working equipment: according to milling train installation accuracy, fit clearance, to stress, the Dynamic wear of working roll and working roll, working roll and backing roll, working roll and memorial archway lining board clearance, measure and revise slide plate size, measure and revise slide plate size, eliminating the axial angle of roll shop building;
Step (2) dancer rools convexity: measure according to the abrasion condition of different amounts of rolling to upper working rolls and lower working rolls and analyze, set up Dynamic wear parameter, according to roll wear rule, thermal expansion rule, breaker roll convexity carries out dynamic analysis, according to the Changing Pattern of rolling specs and roll crown, scald roller technological parameter and requirement is: before rolling 4-5mm plate, prepare rolling Transition Materials, the thickness of Transition Materials is 6mm, scald the roller time for changing working roll 3 hours, then rolling 4-5mm plate;
Step (3) is according to process conditions and operation level of control, and selected steel plate length, can be avoided yielding poorly during the machine caused because steel plate is too short for desired value with 25 meters, or the long steel plate temperature drop caused of steel plate is fast, and head and tail temperature difference is large, and plate shape is wayward waits a production difficult problem; Blank substance is controlled at about 2.0 tons, and according to formulae discovery, mill rolling force, roll torque is checked, determine billet size, temperature schedule, RPM schedule and THICKNESS CONTROL, rolling;
The process parameter control of steel rolling process is as follows: in heating furnace, be heated to about 1180 DEG C, carry out roughing, rough rolling step ensures two reductions in pass and reaches or surpasses 25mm, roughing intermediate blank out enters finishing mill, start rolling temperature is not less than 1050 DEG C, and finishing temperature then controls at about 880 DEG C.
embodiment 4
The production milling method of 4-5mm Ultra-thin flat board, comprises following step:
(1) working equipment is adjusted;
(2) dancer rools convexity, scalds roller;
(3) determine parameter, be rolled.
Step (1) adjustment working equipment: according to milling train installation accuracy, fit clearance, to stress, the Dynamic wear of working roll and working roll, working roll and backing roll, working roll and memorial archway lining board clearance, measure and revise slide plate size, measure and revise slide plate size, eliminating the axial angle of roll shop building;
Step (2) dancer rools convexity: measure according to the abrasion condition of different amounts of rolling to upper working rolls and lower working rolls and analyze, set up Dynamic wear parameter, according to roll wear rule, thermal expansion rule, breaker roll convexity carries out dynamic analysis, according to the Changing Pattern of rolling specs and roll crown, scald roller technological parameter and requirement is: before rolling 4-5mm plate, prepare rolling Transition Materials, the thickness of Transition Materials is 6mm, scalding the roller time is rolling 180 steel, then rolling 4-5mm plate;
Step (3) is according to process conditions and operation level of control, and selected steel plate length, can be avoided yielding poorly during the machine caused because steel plate is too short for desired value with 25 meters, or the long steel plate temperature drop caused of steel plate is fast, and head and tail temperature difference is large, and plate shape is wayward waits a production difficult problem; Blank substance is controlled at about 1.7 tons, and according to formulae discovery, mill rolling force, roll torque is checked, determine billet size, temperature schedule, RPM schedule and THICKNESS CONTROL, rolling;
The process parameter control of steel rolling process is as follows: in heating furnace, be heated to about 1170 DEG C, carry out roughing, rough rolling step ensures two reductions in pass and reaches or surpasses 25mm, roughing intermediate blank out enters finishing mill, finishing mill start rolling temperature 1070 DEG C, finishing temperature then controls at about 870 DEG C.
The dull and stereotyped rolling procedure of 5mmQ235B
The all technicals such as production rolling 5mm very thin Yuanping City steel plate thickness, plate shape, unevenness, mechanical property meet respective country standard, and qualification rate is stablized.
Claims (1)
1. a production milling method for 4-5mm Ultra-thin flat board, comprises following step:
(1) working equipment is adjusted;
(2) dancer rools convexity, scalds roller;
(3) determine parameter, be rolled;
Step (1) adjustment working equipment: according to milling train installation accuracy, fit clearance, to stress, the Dynamic wear of working roll and working roll, working roll and backing roll, working roll and memorial archway lining board clearance, measure and revise slide plate size, eliminating the axial angle of roll shop building;
Step (2) dancer rools convexity: measure according to the abrasion condition of different amounts of rolling to upper working rolls and lower working rolls and analyze, set up Dynamic wear parameter, according to roll wear rule, thermal expansion rule, breaker roll convexity carries out dynamic analysis, according to the Changing Pattern of rolling specs and roll crown, scald roller technological parameter and requirement is: before rolling 4-5mm plate, prepare rolling Transition Materials, the thickness of Transition Materials is 6mm, scalding the roller time is rolling 200 steel, then rolling 4-5mm plate;
Step (3) is according to process conditions and operation level of control, select steel plate length with 23 meters for desired value, blank substance is controlled at 1.6 tons, selection slab thickness is the material type of 135mm, and according to formulae discovery, mill rolling force, roll torque are checked, determine billet size, temperature schedule, RPM schedule and THICKNESS CONTROL, rolling;
Rolling technological parameter controls as follows: in heating furnace, be heated to 1100 DEG C, carry out roughing, rough rolling step ensures two reductions in pass and reaches or surpasses 25mm, and roughing intermediate blank out enters finishing mill, start rolling temperature is not less than 1050 DEG C, and finishing temperature then controls at 850 DEG C.
Priority Applications (1)
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| CN201310243537.6A CN103272843B (en) | 2013-06-19 | 2013-06-19 | Production and rolling method for 4-5mm ultra-thin slabs |
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| CN201310243537.6A CN103272843B (en) | 2013-06-19 | 2013-06-19 | Production and rolling method for 4-5mm ultra-thin slabs |
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| CN103272843B true CN103272843B (en) | 2015-05-20 |
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| CN103567228B (en) * | 2013-09-26 | 2015-04-08 | 燕山大学 | Method for forecasting strip shape and leaning during abnormal rolling of ultrathin strip of six-roller mill |
| CN110773566B (en) * | 2019-11-18 | 2020-12-08 | 东北大学 | Asynchronous cold continuous rolling method for preparing cold-rolled extremely-thin steel strip |
| CN112077142B (en) * | 2020-08-05 | 2022-08-19 | 首钢京唐钢铁联合有限责任公司 | Rolling method and device of 8CrV saw blade steel |
| CN112658030A (en) * | 2020-12-03 | 2021-04-16 | 南京钢铁股份有限公司 | Rolling method of wide and thin high-nickel-molybdenum austenitic stainless steel plate |
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| CN1013080B (en) * | 1988-03-02 | 1991-07-10 | 北京科技大学 | A kind of cold-rolled thin sheet asymmetrical rolling new technology |
| CA2275873C (en) * | 1996-12-19 | 2005-02-08 | Hoogovens Staal B.V. | Process and device for producing a steel strip or sheet |
| ITMI20021996A1 (en) * | 2002-09-19 | 2004-03-20 | Giovanni Arvedi | PROCESS AND PRODUCTION LINE FOR THE MANUFACTURE OF ULTRA-THIN HOT TAPE BASED ON THE TECHNOLOGY OF THE THIN SHEET |
| CN100516269C (en) * | 2006-09-28 | 2009-07-22 | 上海梅山钢铁股份有限公司 | Manufacturing process of fine crystal strengthened carbon constructional steel hot-rolling thin slab |
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