CN109127781B - Flattening plate type process for cold rolling titanium coil - Google Patents
Flattening plate type process for cold rolling titanium coil Download PDFInfo
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- CN109127781B CN109127781B CN201810690291.XA CN201810690291A CN109127781B CN 109127781 B CN109127781 B CN 109127781B CN 201810690291 A CN201810690291 A CN 201810690291A CN 109127781 B CN109127781 B CN 109127781B
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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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Abstract
In order to solve the problem that a large amount of investment is needed due to the fact that leveling equipment needs to be added to the leveling plate of the cold-rolled titanium coil in the prior art, the invention provides a leveling plate type process for the cold-rolled titanium coil. After the cold-rolled titanium coil is processed by the method, the split plate type is good, and the unevenness can stably reach below 5 mm. The method for leveling and shaping the cold-rolled titanium coil does not need to add new equipment, has low cost and high efficiency, and can realize mass production.
Description
Technical Field
The invention relates to the field of leveling treatment of cold-rolled titanium coils, in particular to a leveling plate type process suitable for titanium coils with the thickness of 0.35-3.0 mm and the width of 900-1280 mm, and the process does not need to increase leveling and shaping equipment and saves the input cost.
Background
In the production process of the cold-rolled titanium coil, the cold rolling and vacuum annealing processes are required. In the cold rolling process, due to the appearance of the conditions of incoming material convexity, cold rolling deviation and the like, plate shape defects including wave shape, sickle bend, buckling, elastic edge and the like are generally inevitable; in the vacuum annealing process, because the temperature field is not uniform, the titanium edge curling part is heated firstly, the middle part of the titanium edge curling part is heated and then generates larger internal stress, and the titanium edge curling part is in an arch shape macroscopically after annealing. Because the two procedures generate the defect of poor plate shape, the plate shape is generally required to be improved by flattening. However, the rolling force applied during flattening is generally small, and if the rolling force is large, the reduction in thickness is caused, and the coil strength is increased, and the elongation is reduced, particularly when the diameter of the leveler roll is small. However, for some coils with poor incoming sheet profile, the improvement of the sheet profile of the titanium coil is limited when the rolling force is small. After the titanium coil is partially flattened and then is flattened, the unevenness is 10-20 mm, and the plate shape cannot meet the requirement of high flatness with the unevenness being less than or equal to 5 mm.
In order to improve the titanium coiled sheet shape, stretch bending straightening, sheet shape instruments and the like are generally adopted in the industry for processing, the equipment investment is large, the cost is high, and the operation is complex.
Disclosure of Invention
In order to solve the problem that in the prior art, a large amount of investment is needed due to the fact that leveling equipment is needed to be added to the leveling plate of the cold-rolled titanium coil, the invention provides a leveling plate type process for the cold-rolled titanium coil.
The flattening plate type process for cold rolling of the titanium coil is suitable for flattening the titanium coil with the thickness of 0.35-3.0 mm and the width of 900-1280 mm, and the technical scheme is as follows: when the cold-rolled titanium coil is leveled, the leveling roller on the rolling mill is subjected to laser disordered texturing treatment, so that the rolling force of the rolling mill is increased along with the increase of the roughness of the surface of the leveling roller, and meanwhile, the roll bending force of the rolling mill is increased along with the increase of the rolling force of the rolling mill.
Furthermore, the roughness of the surface of the leveling roller is 1-6 μm, the rolling force range of the rolling mill is 100-800 tons, the roll bending force is 0-6 tons, and the cold-rolled titanium coil with the uncoiling plate shape being less than or equal to 5mm is obtained through at least one leveling process.
Further, when the roughness of the leveling roller is 0.1-2.0 μm, the rolling force of the rolling mill is 100-200 tons; when the roughness of the leveling roller is 2.0-4.0 μm, the rolling force of the rolling mill is 200-400 tons; when the roughness of the leveling roller is 4.0-6.0 μm, the rolling force of the rolling mill is 400-800 tons; when the rolling force of the rolling mill is 100-200 tons, the roll bending force is 0-4 tons; when the rolling force of the rolling mill is 200-400 tons, the roll bending force is 1-5 tons; when the rolling force of the rolling mill is 400-600 tons, the roll bending force is 2-6 tons.
The diameter of the leveling roller is 350-390 mm.
The beneficial effects brought by the invention are as follows: according to the invention, the surface of the leveling roller is subjected to laser disordered texturing treatment, the rolling force is controlled according to the surface roughness of the leveling roller, and the roller bending force is controlled according to the rolling force, so that the large rolling force can be realized and no thickness reduction can be ensured when the cold-rolled titanium coil is leveled, and the plate shape defects of the titanium coil such as arch shape, elastic edge and the like can be effectively improved. The flat titanium coil has good plate shape after being uncoiled, and the unevenness can stably reach below 5 mm. The method for leveling and shaping the cold-rolled titanium coil does not need to add new equipment, has low cost and high efficiency, and can realize mass production.
Drawings
FIG. 1 is a cold rolled titanium coil prior to shaping using the present invention.
FIG. 2 is a cold rolled titanium coil shaped using the present invention.
FIG. 3 is a cold rolled titanium coil prior to shaping using the present invention.
FIG. 4 is a cold rolled titanium coil shaped using the present invention.
Detailed Description
The flattening plate type process for cold rolling of the titanium coil is suitable for flattening the titanium coil with the thickness of 0.35-3.0 mm and the width of 900-1280 mm, and the technical scheme is as follows: when the cold-rolled titanium coil is leveled, the leveling roller on the rolling mill is subjected to laser disordered texturing treatment, so that the rolling force of the rolling mill is increased along with the increase of the roughness of the surface of the leveling roller, and meanwhile, the roll bending force of the rolling mill is increased along with the increase of the rolling force of the rolling mill.
Furthermore, the roughness of the surface of the leveling roller is 1-6 μm, the rolling force range of the rolling mill is 100-800 tons, the roll bending force is 0-6 tons, and the cold-rolled titanium coil with the uncoiling plate shape being less than or equal to 5mm is obtained through at least one leveling process.
Further, when the roughness of the leveling roller is 0.1-2.0 μm, the rolling force of the rolling mill is 100-200 tons; when the roughness of the leveling roller is 2.0-4.0 μm, the rolling force of the rolling mill is 200-400 tons; when the roughness of the leveling roller is 4.0-6.0 μm, the rolling force of the rolling mill is 400-800 tons; when the rolling force of the rolling mill is 100-200 tons, the roll bending force is 0-4 tons; when the rolling force of the rolling mill is 200-400 tons, the roll bending force is 1-5 tons; when the rolling force of the rolling mill is 400-600 tons, the roll bending force is 2-6 tons.
The diameter of the leveling roller is 350-390 mm.
The laser disordered texturing treatment comprises the following steps: the laser modulation technology is utilized to change the spacing of the roughened points on the surface of the leveling roller and the arrangement of the dot matrix, so that the surface of the leveling roller can obtain a disordered pitted surface. In the prior art, the effect of the common laser disordered texturing treatment is in rolling, and because the textured leveling roller changes the contact state between the roller and the plate, the smooth surface is changed into the smooth surface from the rough surface, the friction coefficient is obviously improved under the action of rolling force, and further the working efficiency is improved.
It is to be understood that: the leveling roller is arranged on the rolling mill, and the rolling mill performs shaping on the titanium plate through the leveling roller.
The invention relates to a process for a flat plate type process for cold rolling a titanium coil, which comprises the following steps:
A. roughening the leveling roller before leveling:
A1. the diameter of the leveling roller is 350-390 mm; carrying out laser disordered texturing treatment on the composite material;
A2. the roughness of the leveling roller needs to be controlled to be 1-6 mu m;
B. leveling with large rolling force on a rolling mill:
B1. cold rolling titanium coil on a rolling mill at a rate of 2.5kg/mm2~10.5kg/mm2Leveling the unit tension by multiple passes through a rolling force of 100-800 tons;
B2. the rolling force of the rolling mill needs to be matched with the roughness of the leveling roll during leveling, and the larger the roughness of the leveling roll and the larger the rolling force can be; the roughness of the leveling roller is small, and the rolling force is smaller; optionally, when the roughness of the leveling roller is 0.1-2.0 μm, the rolling force is 100-200 tons; when the roughness is 2.0-4.0 μm, the rolling force is 200-400 tons; when the roughness is 4.0-6.0 μm, the rolling force is 400-800 tons;
C. controlling the roll bending force to be matched with the rolling force:
C. the roll bending force needs to be matched with the rolling force of the rolling mill to prevent wave shapes; when the rolling force of the rolling mill is 100-200 tons, the roll bending force is 0-4 tons; when the rolling force of the rolling mill is 200-400 tons, the roll bending force is 1-5 tons; when the rolling force of the rolling mill is 400-600 tons, the roll bending force is 2-6 tons.
It is to be understood that: in the step A2, the roughness of the leveling roller cannot be too small, so that the rolling force is too small during leveling; the roughness of the leveling roller cannot be too large, so that the surface roughness of the rolled material after leveling is large, degreasing is not easy to completely remove.
It is to be understood that: in the step B2, the rolling force of the rolling mill needs to be matched with the roughness of the leveling roller during leveling, and the rolling force can be properly increased when the roughness of the leveling roller is large; the roughness of the leveling roller is small, and the rolling force can be properly reduced; the rolling force must not be too low or the flat plate profile cannot be improved effectively. The rolling force must not be too great or the thickness of the plate will be reduced.
Example 1:
the thickness of the coiled material is 0.4mm, and the elastic edge of the incoming material is serious;
the roughness of the leveling roller is 0.8 mu m; the diameter of the leveling roller is 350 mm;
leveling for one pass by using a rolling force of 200 tons; the roll bending force is 0.5 ton;
the coil material has no elastic edge after being flattened, and the plate shape is stable and is less than or equal to 5mm after being flattened.
Example 2:
1) the thickness of the coiled material is 1.0mm, and the incoming material has serious double-edge waves;
the roughness of the leveling roller is 3.0 mu m; the diameter of the leveling roller is 360 mm;
the rolling force is 400 tons, and the process is carried out for two times; the roll bending force is 2 tons;
the edge wave of the coil is slight after flattening, and the plate shape is stable and is less than or equal to 5mm after flattening.
Example 3:
1) the thickness of the coiled material is 2.0mm, and the arch of the incoming material is serious;
the roughness of the leveling roller is 5.0 mu m; the diameter of the leveling roller is 390 mm;
flattening by using the rolling force of 600 tons for three times; the roll bending force is 4 tons;
the coil has slight arch after flattening, and the shape of the coil is stable and less than or equal to 5mm after flattening;
the invention provides a process for improving the leveling effect of a cold-rolled titanium coil, which can effectively improve the leveling plate shape of the titanium coil on the premise of ensuring the thickness and the performance of the titanium coil.
It should be added that the process is not only suitable for improving the shape of the titanium coil, but also suitable for obtaining the surface of the titanium coil with certain roughness, and the required surface roughness can be obtained by controlling the roughness of the leveling roller, the rolling force and the leveling pass.
Example 4: controlling the roughness of a leveling roller to be 5 mu m and the diameter of the leveling roller to be 380mm when a strip with the surface roughness of 0.8 mu m is to be obtained; the flattening rolling force is 400-600 tons, and two passes of flattening are needed.
As shown in figures 1-4, the cold-rolled titanium coil flattening and shaping method can effectively improve the defects of the titanium coil such as arch shape, elastic edge and the like. The flat titanium coil has good plate shape after being uncoiled, and the unevenness can stably reach below 5 mm.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. The utility model provides a levelling plate type technology for cold rolling titanium book, is applicable to the titanium and rolls up the level and smooth of 0.35~3.0mm of thickness, width 900~1280mm titanium book, its characterized in that: when the cold-rolled titanium coil is leveled, the leveling roller on the rolling mill is subjected to laser disordered texturing treatment, so that the rolling force of the rolling mill is increased along with the increase of the roughness of the surface of the leveling roller, and meanwhile, the roll bending force of the rolling mill is increased along with the increase of the rolling force of the rolling mill.
2. A flat sheet type process for cold rolling a titanium coil according to claim 1, wherein: the roughness of the surface of the leveling roller is 1-6 mu m, the rolling force range of the rolling mill is 100-800 tons, the roll bending force is 0-6 tons, and the cold-rolled titanium coil with the thickness of less than or equal to 5mm is obtained through at least one leveling pass.
3. A flat sheet type process for cold rolling a titanium coil according to claim 1, wherein: when the roughness of the leveling roller is 0.1-2.0 μm, the rolling force of the rolling mill is 100-200 tons; when the roughness of the leveling roller is 2.0-4.0 μm, the rolling force of the rolling mill is 200-400 tons; when the roughness of the leveling roller is 4.0-6.0 μm, the rolling force of the rolling mill is 400-800 tons; when the rolling force of the rolling mill is 100-200 tons, the roll bending force is 0-4 tons; when the rolling force of the rolling mill is 200-400 tons, the roll bending force is 1-5 tons; when the rolling force of the rolling mill is 400-600 tons, the roll bending force is 2-6 tons.
4. A flat sheet type process for cold rolling titanium coils according to claim 1, 2 or 3, characterized in that: the diameter of the leveling roller is 350-390 mm.
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| CN201810690291.XA CN109127781B (en) | 2018-06-28 | 2018-06-28 | Flattening plate type process for cold rolling titanium coil |
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| CN201810690291.XA CN109127781B (en) | 2018-06-28 | 2018-06-28 | Flattening plate type process for cold rolling titanium coil |
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| JP3358699B2 (en) * | 1996-04-10 | 2002-12-24 | 新日本製鐵株式会社 | Pure titanium sheet for building materials with little distortion during bending |
| CN100430511C (en) * | 2005-06-30 | 2008-11-05 | 宝山钢铁股份有限公司 | Cold rolled strip steel for shadow mask and its making process |
| CN101486051A (en) * | 2009-02-24 | 2009-07-22 | 武钢集团昆明钢铁股份有限公司 | Method for leveling titanium board coil |
| CN102430580A (en) * | 2011-11-16 | 2012-05-02 | 洛阳双瑞精铸钛业有限公司 | Dry flattening method for pure titanium strip coils by aid of common cold rolling mill |
| CN103706646B (en) * | 2013-12-18 | 2015-10-28 | 首钢总公司 | A kind of gapless atomic steel connects the method for optimizing temper rolling technology moving back thin plate |
| CN107511400B (en) * | 2017-06-09 | 2019-07-02 | 首钢京唐钢铁联合有限责任公司 | Method for controlling surface twill defects of cold-rolled thin-specification high-strength steel |
| CN108165822B (en) * | 2018-02-10 | 2020-04-14 | 洛阳双瑞精铸钛业有限公司 | Preparation method of TA2 cold-rolled titanium strip for low-strength and easy-to-form welded pipe |
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