CN112122341B - Combined roller type of temper mill - Google Patents
Combined roller type of temper mill Download PDFInfo
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- CN112122341B CN112122341B CN202010796932.7A CN202010796932A CN112122341B CN 112122341 B CN112122341 B CN 112122341B CN 202010796932 A CN202010796932 A CN 202010796932A CN 112122341 B CN112122341 B CN 112122341B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
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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
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
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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
- B21B2001/221—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 by cold-rolling
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Abstract
The invention relates to a combined roll profile of a temper mill, belongs to the technical field of temper rolling of stainless cold-rolled strip steel, solves the technical problems of eliminating edge waves and avoiding other defects in the temper rolling operation through the structural design of the roll profile, eliminates the edge waves of the steel strip, is an effective method for increasing the convexity of a temper roll, and limits the increase of the convexity due to the characteristic of a sin sine roll profile. Comprehensively, the ideal effect can be achieved only by changing the design of the roller type. According to the convexity of the steel strip plate, the convexity of the middle part of the leveling roller is properly reduced, the extension difference is reduced, and the steel strip is relatively straight; the proper position of the edge of the leveling roller is increased with convexity, and the extension difference is enlarged, thereby achieving the purpose of eliminating edge waves. The combination of these two roll types results in a reduction in the overall crown of the leveler roll. Because the convexity of the middle part of the leveling roller is gentle, the pressure is easier to act on the edge part. The formation of the edge extension difference is met to the maximum extent, the straight steel strip is beneficial to the establishment of tension, the mutual supporting effect is generated, and the satisfactory leveling effect is achieved.
Description
Technical Field
The invention belongs to the technical field of temper rolling of stainless cold-rolled strip steel, and particularly relates to a combined roller type of a temper mill.
Background
The stainless cold-rolled strip steel flattening process is a last process before a cold-rolled stainless steel strip leaves a factory, the flattening quality is directly related to the quality and the positioning of the steel strip on the market, the one-time steel passing qualification rate of flattening is improved on the premise of ensuring the surface quality, the working efficiency is improved, and the process is the pursuit direction in cold-rolled production.
The flattening of the stainless cold-rolled strip steel is an important link of the production of the stainless cold-rolled strip steel, and through continuous development, the variety of the stainless steel is from single 300-series nickel steel 321 and 400-series 0/1/2/3Cr, and hundreds of steel grades including 300-series heat-resistant steel, dual-phase steel, tank material, 400-series ultra-pure steel, automobile exhaust, vehicle steel and the like are developed; the specification of the cold-rolled strip steel is expanded from the initial thickness of 0.5mm-3.0mm and the width of 1000mm-1219mm to the thickness of 0.3mm-8.0mm and the width of 940mm-2000 mm; the offline planisher is developed from the initial 1 to the current 4; however, the roll profile of the temper roll is always in the form of a sin sine roll, and is not changed, the temper roll is lengthened due to the widening of the cold rolled strip, the number of passes of the roll is increased in order to ensure a sufficient extension curve, the extension difference from the center point of the roll to the two sides of the roll is increased, the wider the material is formed, and the higher the pressure is, the greater the roll crown of the material (thin material) with smaller extension is. In order to increase the elongation and eliminate the edge waves, the multi-pass flattening is carried out, so that the extension difference between the middle and two sides of the roller is enlarged, and the bottom of the strip steel pot is formed. The increased crimp tension causes bulging and longitudinal creasing due to the poor flatness of the steel strip. Tension is an important condition for ensuring the extension of the steel strip, the tension is too small, the elongation is too low, and edge waves are difficult to eliminate, so that the problem of contradiction between leveling conditions is formed.
Disclosure of Invention
The invention aims to: in the flattening operation, the defects of the cold-rolled strip steel plate mainly comprise medium waves (bellyband and rib stripes) and side waves (single side and double sides), in order to overcome the defects in the prior art, eliminate the side waves and avoid other defects (longitudinal stripes and paper padding marks), the most reasonable roller shape is utilized for flattening, and an operator can form the best flattening effect by using the simplest operation method and the least flattening passes.
The design concept of the invention is as follows: the method is effective in eliminating edge waves of the steel strip and increasing the convexity of the leveling roller, and the sine roller shape characteristic restricts the increase of the convexity. Comprehensively, the ideal effect can be achieved only by changing the design of the roller type. According to the convexity of the steel strip plate, the convexity of the middle part of the leveling roller is properly reduced, the extension difference is reduced, and the steel strip is relatively straight; the proper position of the edge of the leveling roller is increased with convexity, and the extension difference is enlarged, thereby achieving the purpose of eliminating edge waves. The combination of these two roll types results in a reduction in the overall crown of the leveler roll. Because the convexity of the middle part of the leveling roller is gentle, the pressure is easier to act on the edge part. The formation of the edge extension difference is met to the maximum extent, and the straight steel strip is beneficial to the establishment of tension and has the function of mutual support so as to achieve the satisfactory leveling effect.
The invention is realized by the following technical scheme.
The utility model provides a levelling machine combination roller type, it includes wide material leveling roller type and narrow material leveling roller type, and wide material leveling roller type and narrow material leveling roller type are all based on sin sine roller type, wherein:
the thickness of an incoming steel plate of the combined roller of the temper mill is 0.3-3.0 mm, the size of an extension difference is determined by the temper mill, the thick material extension is large, the thin material extension is small, the thicker the thickness of the incoming steel plate is, the smaller the roller surface convexity of the combined roller of the temper mill is, the thinner the thickness of the incoming steel plate is, the larger the roller surface convexity of the combined roller of the temper mill is;
the narrow material leveling roller is characterized in that: the roller surface convexity of the roller-shaped part in the middle of the narrow material leveling roller is 150-250 mu m, and the roller-shaped part at the edge of the narrow material leveling roller is 250-600 mu m;
the wide material leveling roller is characterized in that: the roller surface convexity of the roller-shaped part in the middle of the wide material leveling roller is 200-300 mu m, and the roller-shaped part at the edge of the wide material leveling roller is 300-800 mu m.
Furthermore, the single-pass elongation of the combined roller of the leveling machine is 0.20-1.5.
Further, the length of the narrow material leveling roller is 1400mm, when the narrow material leveling roller is used for rolling, if the width of an incoming steel plate is 940 mm-1100 mm, the width of a single-side edge wave is 50-75 mm, the width of a roller shape part in the middle of the narrow material leveling roller is 790-1000 mm, and the rest is an edge roller shape part; if the width of the incoming steel plate is 1200 mm-1300 mm, the width of the unilateral edge wave is 100-150 mm, the width of the roller-shaped part in the middle of the narrow material leveling roller is 900-1100 mm, and the rest is the roller-shaped part at the edge part; the details are shown in the following table one.
Further, for the narrow stock leveling roll profile:
the thickness of the incoming steel plate is 0.3-0.4 mm, the single-pass elongation is 0.20-0.25, the convexity of the roller surface of the roller-shaped part in the middle of the narrow material leveling roller is 250 micrometers, and the convexity of the roller-shaped part at the edge of the narrow material leveling roller is 600 micrometers;
the thickness of the incoming steel plate is 0.5-0.6 mm, the single-pass elongation is 0.25-0.30, the convexity of the roller surface of the roller-shaped part in the middle of the narrow material leveling roller is 250 micrometers, and the convexity of the roller-shaped part at the edge of the narrow material leveling roller is 500 micrometers;
the thickness of the incoming steel plate is 0.7-0.8 mm, the single-pass elongation is 0.30-0.40, the convexity of the roller surface of the roller-shaped part in the middle of the narrow material leveling roller is 250 micrometers, and the convexity of the roller-shaped part at the edge of the narrow material leveling roller is 400 micrometers;
the thickness of the incoming steel plate is 0.9-1.2 mm, the single-pass elongation is 0.50-0.60, the convexity of the roller surface of the roller-shaped part in the middle of the narrow material leveling roller is 200 mu m, and the convexity of the roller-shaped part at the edge of the narrow material leveling roller is 350 mu m;
the thickness of the incoming steel plate is 1.5-2.0 mm, the single-pass elongation is 0.60-1.0, the convexity of the roller surface of the roller-shaped part in the middle of the narrow material leveling roller is 200 mu m, and the convexity of the roller-shaped part at the edge of the narrow material leveling roller is 300 mu m;
the thickness of the incoming steel plate is 2.5-3.0 mm, the single-pass elongation is 1.0-1.5, the convexity of the roller surface of the roller-shaped part in the middle of the narrow material leveling roller is 150 mu m, and the convexity of the roller-shaped part at the edge of the narrow material leveling roller is 250 mu m; the details are shown in the following table two.
Note: in the present invention, "lane" is a unit of convexity commonly used by those skilled in the art, 1 lane =1 filament =10 μm =0.01mm
=0.001cm。
Furthermore, the roller surface convexity is 160 mu m at the position of 450mm on one side of the roller shape part in the middle of the narrow material leveling roller; the roller surface convexity is 214 mu m at the position of 250mm of the roller shape part at the edge part of the narrow material leveling roller; the total crown of the roller surface of the narrow material leveling roller is 374 μm.
Further, for the wide material leveling roll profile:
the thickness of the incoming steel plate is 0.3-0.4 mm, the single-pass elongation is 0.20-0.25, the convexity of the roller surface of the roller-shaped part in the middle of the wide material leveling roller is 300 mu m, and the convexity of the roller-shaped part at the edge of the wide material leveling roller is 800 mu m;
the thickness of the incoming steel plate is 0.5-0.6 mm, the single-pass elongation is 0.25-0.30, the convexity of the roller surface of the roller-shaped part in the middle of the wide material leveling roller is 300 mu m, and the convexity of the roller-shaped part at the edge of the wide material leveling roller is 700 mu m;
the thickness of the incoming steel plate is 0.7-0.8 mm, the single-pass elongation is 0.30-0.40, the convexity of the roller surface of the roller-shaped part in the middle of the wide material leveling roller is 300 mu m, and the convexity of the roller-shaped part at the edge of the wide material leveling roller is 600 mu m;
the thickness of the incoming steel plate is 0.9-1.2 mm, the single-pass elongation is 0.50-0.60, the convexity of the roller surface of the roller-shaped part in the middle of the wide material leveling roller is 250 micrometers, and the convexity of the roller-shaped part at the edge of the wide material leveling roller is 500 micrometers;
the thickness of the incoming steel plate is 1.5-2.0 mm, the single-pass elongation is 0.60-1.0, the convexity of the roller surface of the roller-shaped part in the middle of the wide material leveling roller is 250 micrometers, and the convexity of the roller-shaped part at the edge of the wide material leveling roller is 400 micrometers;
the thickness of the incoming steel plate is 2.5-3.0 mm, the single-pass elongation is 1.0-1.5, the convexity of the roller surface of the roller-shaped part in the middle of the wide material leveling roller is 200 mu m, and the convexity of the roller-shaped part at the edge of the wide material leveling roller is 300 mu m; the details are shown in table three below.
Furthermore, the roller surface convexity is 196 mu m at the position of 550mm of a single side of the roller shape part in the middle of the wide material leveling roller; the roll surface convexity is 128.5 mu m at the position of 150mm of the roll shape part at the edge part of the wide material leveling roll; the total convexity of the wide material leveling roller surface is 325.7 μm.
Further, the width of the narrow cold-rolled stainless steel strip rolled by the narrow material leveling roller is 940-1300 mm, and the thickness of the narrow cold-rolled stainless steel strip is 0.3-3.0 mm; the wide cold-rolled stainless steel strip rolled by the wide material leveling roller has the width of 1350-2000 mm and the thickness of 0.4-7.0 mm.
Compared with the prior art, the invention has the beneficial effects that:
the plate shape of the stainless steel cold-rolled strip steel is required, the edge wave height of the stainless steel cold-rolled strip steel with the thickness of less than 1.2mm is not more than 8mm, and the edge wave height of the stainless steel cold-rolled strip steel with the thickness of more than 1.2mm is not more than 15 mm. In January, 45 sin sine rollers and 25 sin rollers are used, the plate type waves are heavy and flat for 39 rolls, and the flattening qualified rate is 95.7%. And adjusting a new roller type in February, flattening 9 rolls of plate type waves, and flattening the qualified rate of 99%. New roller types are used in march, the plate type waves are leveled by 4 rolls, and the leveling qualified rate is 99.6%. After the new roller type is used, longitudinal crease marks of the steel belt are basically eliminated, and pad paper crease marks are obviously reduced. The expected effect can be achieved after 95% of materials are leveled for three times (5 leveling times are avoided), and the operation efficiency is improved. The leveling pass is reduced, the stress of the steel plate is properly reduced, and convenience is provided for reducing the longitudinal cutting shear edge wave. The cutting edge wave of a BA plate with 0.4mm of full-moon thin material is 0.
Drawings
Fig. 1 is a schematic view of a roller type structure of a narrow material leveling roller.
Detailed Description
The invention is described in further detail below with reference to the figures and examples. In the present invention, "lane" is a unit of convexity commonly used by those skilled in the art, 1 lane =1 filament =10 μm =0.01mm =0.001 cm.
A leveler combination roll profile as shown in fig. 1, which comprises a wide material leveling roll profile and a narrow material leveling roll profile, wherein the wide material leveling roll profile and the narrow material leveling roll profile are based on sin sine roll profiles, and wherein:
the thickness of an incoming steel plate of the combined roller of the temper mill is 0.3-3.0 mm, the size of an extension difference is determined by the temper mill, the thick material extension is large, the thin material extension is small, the thicker the thickness of the incoming steel plate is, the smaller the roller surface convexity of the combined roller of the temper mill is, the thinner the thickness of the incoming steel plate is, the larger the roller surface convexity of the combined roller of the temper mill is;
the narrow material leveling roller is characterized in that: the roller surface convexity of the roller-shaped part in the middle of the narrow material leveling roller is 150-250 mu m, and the roller-shaped part at the edge of the narrow material leveling roller is 250-600 mu m;
the wide material leveling roller is characterized in that: the roller surface convexity of the roller-shaped part in the middle of the wide material leveling roller is 200-300 mu m, and the roller-shaped part at the edge of the wide material leveling roller is 300-800 mu m.
Furthermore, the single-pass elongation of the combined roller of the leveling machine is 0.20-1.5.
Further, the length of the narrow material leveling roller is 1400mm, when the narrow material leveling roller is used for rolling, if the width of an incoming steel plate is 940 mm-1100 mm, the width of a single-side edge wave is 50-75 mm, the width of a roller shape part in the middle of the narrow material leveling roller is 790-1000 mm, and the rest is an edge roller shape part; if the width of the incoming steel plate is 1200 mm-1300 mm, the width of the unilateral edge wave is 100-150 mm, the width of the roller-shaped part in the middle of the narrow material leveling roller is 900-1100 mm, and the rest is the roller-shaped part at the edge part; the details are shown in the following table one.
Further, for the narrow stock leveling roll profile:
the thickness of the incoming steel plate is 0.3-0.4 mm, the single-pass elongation is 0.20-0.25, the convexity of the roller surface of the roller-shaped part in the middle of the narrow material leveling roller is 250 micrometers, and the convexity of the roller-shaped part at the edge of the narrow material leveling roller is 600 micrometers;
the thickness of the incoming steel plate is 0.5-0.6 mm, the single-pass elongation is 0.25-0.30, the convexity of the roller surface of the roller-shaped part in the middle of the narrow material leveling roller is 250 micrometers, and the convexity of the roller-shaped part at the edge of the narrow material leveling roller is 500 micrometers;
the thickness of the incoming steel plate is 0.7-0.8 mm, the single-pass elongation is 0.30-0.40, the convexity of the roller surface of the roller-shaped part in the middle of the narrow material leveling roller is 250 micrometers, and the convexity of the roller-shaped part at the edge of the narrow material leveling roller is 400 micrometers;
the thickness of the incoming steel plate is 0.9-1.2 mm, the single-pass elongation is 0.50-0.60, the convexity of the roller surface of the roller-shaped part in the middle of the narrow material leveling roller is 200 mu m, and the convexity of the roller-shaped part at the edge of the narrow material leveling roller is 350 mu m;
the thickness of the incoming steel plate is 1.5-2.0 mm, the single-pass elongation is 0.60-1.0, the convexity of the roller surface of the roller-shaped part in the middle of the narrow material leveling roller is 200 mu m, and the convexity of the roller-shaped part at the edge of the narrow material leveling roller is 300 mu m;
the thickness of the incoming steel plate is 2.5-3.0 mm, the single-pass elongation is 1.0-1.5, the convexity of the roller surface of the roller-shaped part in the middle of the narrow material leveling roller is 150 mu m, and the convexity of the roller-shaped part at the edge of the narrow material leveling roller is 250 mu m; the details are shown in the following table two.
Furthermore, the roller surface convexity is 160 mu m at the position of 450mm on one side of the roller shape part in the middle of the narrow material leveling roller; the roller surface convexity is 214 mu m at the position of 250mm of the roller shape part at the edge part of the narrow material leveling roller; the total crown of the roller surface of the narrow material leveling roller is 374 μm.
Further, for the wide material leveling roll profile:
the thickness of the incoming steel plate is 0.3-0.4 mm, the single-pass elongation is 0.20-0.25, the convexity of the roller surface of the roller-shaped part in the middle of the wide material leveling roller is 300 mu m, and the convexity of the roller-shaped part at the edge of the wide material leveling roller is 800 mu m;
the thickness of the incoming steel plate is 0.5-0.6 mm, the single-pass elongation is 0.25-0.30, the convexity of the roller surface of the roller-shaped part in the middle of the wide material leveling roller is 300 mu m, and the convexity of the roller-shaped part at the edge of the wide material leveling roller is 700 mu m;
the thickness of the incoming steel plate is 0.7-0.8 mm, the single-pass elongation is 0.30-0.40, the convexity of the roller surface of the roller-shaped part in the middle of the wide material leveling roller is 300 mu m, and the convexity of the roller-shaped part at the edge of the wide material leveling roller is 600 mu m;
the thickness of the incoming steel plate is 0.9-1.2 mm, the single-pass elongation is 0.50-0.60, the convexity of the roller surface of the roller-shaped part in the middle of the wide material leveling roller is 250 micrometers, and the convexity of the roller-shaped part at the edge of the wide material leveling roller is 500 micrometers;
the thickness of the incoming steel plate is 1.5-2.0 mm, the single-pass elongation is 0.60-1.0, the convexity of the roller surface of the roller-shaped part in the middle of the wide material leveling roller is 250 micrometers, and the convexity of the roller-shaped part at the edge of the wide material leveling roller is 400 micrometers;
the thickness of the incoming steel plate is 2.5-3.0 mm, the single-pass elongation is 1.0-1.5, the convexity of the roller surface of the roller-shaped part in the middle of the wide material leveling roller is 200 mu m, and the convexity of the roller-shaped part at the edge of the wide material leveling roller is 300 mu m; the details are shown in table three below.
Furthermore, the roller surface convexity is 196 mu m at the position of 550mm of a single side of the roller shape part in the middle of the wide material leveling roller; the roll surface convexity is 128.5 mu m at the position of 150mm of the roll shape part at the edge part of the wide material leveling roll; the total convexity of the wide material leveling roller surface is 325.7 μm.
Further, the width of the narrow cold-rolled stainless steel strip rolled by the narrow material leveling roller is 940-1300 mm, and the thickness of the narrow cold-rolled stainless steel strip is 0.3-3.0 mm; the wide cold-rolled stainless steel strip rolled by the wide material leveling roller has the width of 1350-2000 mm and the thickness of 0.4-7.0 mm.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (7)
1. The utility model provides a levelling machine combination roller type, it includes wide material leveling roller type and narrow material leveling roller type, and wide material leveling roller type and narrow material leveling roller type are all based on sin sine roller type, its characterized in that:
the thickness of the incoming steel plate of the leveling machine combination roller is 0.3-3.0 mm, the width of the narrow cold-rolled stainless steel strip rolled by the narrow material leveling roller is 940-1300 mm, and the width of the wide cold-rolled stainless steel strip rolled by the wide material leveling roller is 1350-2000 mm; the thicker the thickness of the incoming steel plate is, the smaller the roller surface convexity of the combined roller of the temper mill is, the thinner the thickness of the incoming steel plate is, and the larger the roller surface convexity of the combined roller of the temper mill is;
the narrow material leveling roller is characterized in that: the roller surface convexity of the roller-shaped part in the middle of the narrow material leveling roller is 150-250 mu m, and the roller-shaped part at the edge of the narrow material leveling roller is 250-600 mu m;
the wide material leveling roller is characterized in that: the roller surface convexity of the roller-shaped part in the middle of the wide material leveling roller is 200-300 mu m, and the roller-shaped part at the edge of the wide material leveling roller is 300-800 mu m.
2. The leveler roller assembly of claim 1, wherein: the single-pass elongation of the combined roller of the leveling machine is 0.20-1.5.
3. The leveler roller assembly of claim 1, wherein: the length of the narrow material leveling roller is 1400mm, when the narrow material leveling roller is used for rolling, if the width of an incoming steel plate is 940-1100 mm, the width of a single-side edge wave is 50-75 mm, the width of a roller shape part in the middle of the narrow material leveling roller is 790-1000 mm, and the rest is an edge roller shape part; if the width of the incoming steel plate is 1200 mm-1300 mm, the width of the unilateral edge wave is 100-150 mm, the width of the roller-shaped part in the middle of the narrow material leveling roller is 900-1100 mm, and the rest are the roller-shaped parts at the edges.
4. A temper mill combination roll profile according to claim 1 or 3, wherein:
for the narrow material leveling roll profile:
the thickness of the incoming steel plate is 0.3-0.4 mm, the single-pass elongation is 0.20-0.25, the convexity of the roller surface of the roller-shaped part in the middle of the narrow material leveling roller is 250 micrometers, and the convexity of the roller-shaped part at the edge of the narrow material leveling roller is 600 micrometers;
the thickness of the incoming steel plate is 0.5-0.6 mm, the single-pass elongation is 0.25-0.30, the convexity of the roller surface of the roller-shaped part in the middle of the narrow material leveling roller is 250 micrometers, and the convexity of the roller-shaped part at the edge of the narrow material leveling roller is 500 micrometers;
the thickness of the incoming steel plate is 0.7-0.8 mm, the single-pass elongation is 0.30-0.40, the convexity of the roller surface of the roller-shaped part in the middle of the narrow material leveling roller is 250 micrometers, and the convexity of the roller-shaped part at the edge of the narrow material leveling roller is 400 micrometers;
the thickness of the incoming steel plate is 0.9-1.2 mm, the single-pass elongation is 0.50-0.60, the convexity of the roller surface of the roller-shaped part in the middle of the narrow material leveling roller is 200 mu m, and the convexity of the roller-shaped part at the edge of the narrow material leveling roller is 350 mu m;
the thickness of the incoming steel plate is 1.5-2.0 mm, the single-pass elongation is 0.60-1.0, the convexity of the roller surface of the roller-shaped part in the middle of the narrow material leveling roller is 200 mu m, and the convexity of the roller-shaped part at the edge of the narrow material leveling roller is 300 mu m;
the thickness of the incoming steel plate is 2.5-3.0 mm, the single-pass elongation is 1.0-1.5, the convexity of the roller surface of the roller-shaped part in the middle of the narrow material leveling roller is 150 mu m, and the convexity of the roller-shaped part at the edge of the narrow material leveling roller is 250 mu m.
5. The leveler assembly roll profile of claim 4, wherein: the roller surface convexity is 160 mu m at the position of 450mm of a single side of the roller shape part in the middle of the narrow material leveling roller; the roller surface convexity is 214 mu m at the position of 250mm of the roller shape part at the edge part of the narrow material leveling roller; the total crown of the roller surface of the narrow material leveling roller is 374 μm.
6. A temper mill combination roll profile according to claim 1 or 3, wherein:
for the wide material leveling roll profile:
the thickness of the incoming steel plate is 0.3-0.4 mm, the single-pass elongation is 0.20-0.25, the convexity of the roller surface of the roller-shaped part in the middle of the wide material leveling roller is 300 mu m, and the convexity of the roller-shaped part at the edge of the wide material leveling roller is 800 mu m;
the thickness of the incoming steel plate is 0.5-0.6 mm, the single-pass elongation is 0.25-0.30, the convexity of the roller surface of the roller-shaped part in the middle of the wide material leveling roller is 300 mu m, and the convexity of the roller-shaped part at the edge of the wide material leveling roller is 700 mu m;
the thickness of the incoming steel plate is 0.7-0.8 mm, the single-pass elongation is 0.30-0.40, the convexity of the roller surface of the roller-shaped part in the middle of the wide material leveling roller is 300 mu m, and the convexity of the roller-shaped part at the edge of the wide material leveling roller is 600 mu m;
the thickness of the incoming steel plate is 0.9-1.2 mm, the single-pass elongation is 0.50-0.60, the convexity of the roller surface of the roller-shaped part in the middle of the wide material leveling roller is 250 micrometers, and the convexity of the roller-shaped part at the edge of the wide material leveling roller is 500 micrometers;
the thickness of the incoming steel plate is 1.5-2.0 mm, the single-pass elongation is 0.60-1.0, the convexity of the roller surface of the roller-shaped part in the middle of the wide material leveling roller is 250 micrometers, and the convexity of the roller-shaped part at the edge of the wide material leveling roller is 400 micrometers;
the thickness of the incoming steel plate is 2.5-3.0 mm, the single-pass elongation is 1.0-1.5, the convexity of the roller surface of the roller-shaped part in the middle of the wide material leveling roller is 200 mu m, and the convexity of the roller surface of the roller-shaped part at the edge of the wide material leveling roller is 300 mu m.
7. The leveler assembly roll profile of claim 6, wherein: the roller surface convexity is 196 mu m at the position of 550mm of a single side of the roller shape part in the middle of the wide material leveling roller; the roll surface convexity is 128.5 mu m at the position of 150mm of the roll shape part at the edge part of the wide material leveling roll; the total convexity of the wide material leveling roller surface is 325.7 μm.
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