CN110695093B - High-performance steel rolling method - Google Patents
High-performance steel rolling method Download PDFInfo
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- CN110695093B CN110695093B CN201910952939.0A CN201910952939A CN110695093B CN 110695093 B CN110695093 B CN 110695093B CN 201910952939 A CN201910952939 A CN 201910952939A CN 110695093 B CN110695093 B CN 110695093B
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- steel strip
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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
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/12—Making tubes or metal hoses with helically arranged seams
- B21C37/121—Making tubes or metal hoses with helically arranged seams with non-welded and non-soldered seams
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- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a high-performance steel rolling method, which is characterized in that a thin steel strip is curled into a spiral steel strip to be rolled for the second time, the spiral steel strip is in a hollow cylinder shape, each side wall of the spiral steel strip is formed by tightly laminating a plurality of layers of the thin steel strip, and the spiral steel strip is sequentially heated by a heating furnace, subjected to a rough rolling process and subjected to a finish rolling process to be rolled into finished steel products during the second rolling. The finished steel rolled by the high-performance steel rolling method has good mechanical property.
Description
Technical Field
The invention relates to the technical field of steel rolling, in particular to a high-performance steel rolling method.
Background
At present, steel products are generally rolled into various specifications and brands of steel products such as various wire rods, steel pipes, steel plates, steel coils and the like by square billets, round billets, rectangular billets, plate blanks and the like. In order to obtain ultrahigh strength and ultrahigh toughness, in addition to measures such as temperature control and rolling control, metallurgy workers design and refine crystal grains by depending on alloy components for a long time, but in the traditional continuous casting process, the problems of coarse crystal grains and center looseness inevitably exist in the molten steel solidification process, and in order to improve the performance of steel, a high compression ratio has to be adopted, for example, the steel with the diameter of 6mm is rolled from a 150 x 150mm square billet through multiple rolling, but the quality problems of limited improvement of tensile strength, drawing breakage and the like still exist.
Disclosure of Invention
The invention aims to provide a high-performance steel rolling method, which aims to solve the problems in the prior art and improve the mechanical property of rolled steel.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a high-performance steel rolling method, which is characterized in that a thin steel strip is curled into a spiral steel strip to be rolled for the second time, the spiral steel strip is in a hollow cylinder shape, each side wall of the spiral steel strip is formed by tightly attaching a plurality of layers of the thin steel strip, and the spiral steel strip is sequentially heated by a heating furnace, subjected to a rough rolling process and subjected to a finish rolling process to be rolled into finished steel products during the second rolling.
Preferably, the width of the thin steel strip is b, the pitch width of the spiral steel coil is n, n is less than or equal to b, and b is an integral multiple of n.
Preferably, the width b of the thin steel strip is 200mm-500mm, and the thickness of the thin steel strip is 1mm-3 mm.
Preferably, the thin steel strip is rolled into the helical steel coil by a billet rolling machine.
Preferably, the included angle of the curl of the thin steel strip is theta, and 90 DEG < theta < 180 deg.
Preferably, the diameter of the spiral steel coil is D.
Preferably, the thin steel strip is transported at a speed of 30 to 50m/s in the process of coiling the thin steel strip into the spiral steel coil.
Preferably, the diameter of the hollow portion in the spiral coil should be made as small as possible in the process of coiling the thin steel strip into the spiral coil.
Compared with the prior art, the high-performance steel rolling method of the invention has the following technical effects:
the finished steel rolled by the high-performance steel rolling method has good mechanical property. The high-performance steel rolling method of the invention curls the thin steel band into the spiral steel coil for secondary rolling, and because each side wall of the spiral steel coil is formed by one layer of thin steel band or a plurality of layers of thin steel bands which are closely attached together, at least two layers of thin steel bands are rolled together again to form a finished product of steel in the secondary rolling process of the spiral steel coil, thereby greatly improving the mechanical property of the finished product of steel.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a process flow diagram of the high-performance steel rolling method of the present invention;
FIG. 2 is a schematic view of a coil of steel strip being rolled into a spiral coil of steel in the high performance steel rolling method of the present invention;
wherein: 1-thin steel strip, 2-spiral steel strip, b-width of the thin steel strip, n-pitch width of the spiral steel strip, theta-curling included angle and D-diameter of the spiral steel strip.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The invention aims to provide a high-performance steel rolling method, which aims to solve the problems in the prior art and improve the quality of rolled steel.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1: the embodiment provides a high-performance steel rolling method, a thin steel strip 1 is curled into a spiral steel strip 2 to be rolled for the second time, the spiral steel strip 2 is a hollow cylinder, each side wall of the spiral steel strip 2 is formed by tightly attaching a plurality of layers of thin steel strips 1, and the spiral steel strip 2 is sequentially heated by a heating furnace, rough rolling process and finish rolling process to be rolled into finished steel products during the second rolling.
In the present example, the width b of thin steel strip 1 is 200mm to 500mm, and the thickness of thin steel strip 1 is 1mm to 3 mm. The pitch width of the spiral steel coil 2 is n, n is not more than b, and b is an integral multiple of n, so the obtained diameters of all the positions of the spiral steel coil 2 are the same, the number of layers of the thin steel strip 1 on each side wall is the same, the number of layers of the thin steel strip 1 depends on the multiple relation between the width b of the thin steel strip 1 and the pitch width n of the spiral steel coil 2, and for example, when the width b of the thin steel strip 1 is twice of the pitch width n of the spiral steel coil 2, the number of layers of the thin steel strip 1 on each side wall of the spiral steel coil 2 is two.
In the high-performance steel rolling method of the embodiment, the thin steel strip 1 is rolled into the spiral steel coil 2 by the blank rolling machine, the corner of the thin steel strip 1 is clamped by the chuck of the blank rolling machine at the beginning, then the thin steel strip 1 is twisted and curled, the spiral steel coil 2 is pushed to rotate by the aid of the pressing wheel of the blank rolling machine, after the thin steel strip is curled normally, the curling is pushed by the pressing wheel completely, the rotation and the forward conveying are matched, in the process of curling the thin steel strip 1 into the spiral steel coil 2, the conveying speed of the thin steel strip 1 is 30-50m/s, and it is noted that in practical application, the conveying speed of the thin steel strip 1 is not limited to 30-50m/s in the embodiment, and technical personnel can design the conveying speed of the thin steel strip 1 adaptively according to actual needs.
The included angle of the thin steel strip 1 is theta, and theta is more than 90 degrees and less than 180 degrees. The diameter of the spiral steel coil 2 is D, the diameter of the hollow part in the spiral steel coil 2 is required to be as small as possible in the process of curling the thin steel strip 1 into the spiral steel coil 2, the diameter of the hollow part is as small as possible, the subsequent secondary rolling can be facilitated, the reduction in the secondary rolling process is reduced, the energy is saved, and the rolling efficiency is improved; the smaller θ is, the larger d is, and the smaller n is, the larger the amount of deformation of the thin steel strip 1 increases, and the better the mechanical properties of the rolled steel product are.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (7)
1. A high-performance steel rolling method is characterized by comprising the following steps: the method comprises the following steps of curling a thin steel strip into a spiral steel strip for secondary rolling, wherein the spiral steel strip is in a hollow cylinder shape, each side wall of the spiral steel strip is formed by tightly attaching a plurality of layers of the thin steel strip, and the spiral steel strip is rolled into a finished product steel product through heating of a heating furnace, a rough rolling process and a finish rolling process in sequence during secondary rolling; the diameter of the hollow portion in the spiral coil should be made as small as possible in the process of coiling the thin steel strip into the spiral coil.
2. The method of rolling a high-performance steel material as claimed in claim 1, wherein: the width of the thin steel strip is b, the pitch width of the spiral steel coil is n, n is less than or equal to b, and b is an integral multiple of n.
3. The method of rolling a high-performance steel material as claimed in claim 1, wherein: the width b of the thin steel strip is 200mm-500mm, and the thickness of the thin steel strip is 1mm-3 mm.
4. The method of rolling a high-performance steel material as claimed in claim 1, wherein: and rolling the thin steel strip into the spiral steel coil through a blank rolling machine.
5. The method of rolling a high-performance steel material as claimed in claim 1, wherein: the curling included angle of the thin steel strip is theta, and the theta is more than 90 degrees and less than 180 degrees.
6. The method of rolling a high-performance steel material as claimed in claim 1, wherein: the diameter of the spiral steel coil is D.
7. The method of rolling a high-performance steel material as claimed in claim 1, wherein: the conveying speed of the thin steel strip is 30-50m/s in the process of coiling the thin steel strip into the spiral steel coil.
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| CN201910952939.0A CN110695093B (en) | 2019-10-09 | 2019-10-09 | High-performance steel rolling method |
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| CN201910952939.0A CN110695093B (en) | 2019-10-09 | 2019-10-09 | High-performance steel rolling method |
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| CN110695093B true CN110695093B (en) | 2021-01-01 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0359186A (en) * | 1989-07-22 | 1991-03-14 | Shigeru Hayashi | Production of fibrous material |
| JP2001353583A (en) * | 2000-06-15 | 2001-12-25 | Hitachi Metals Ltd | Method of manufacturing layered member |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR860000125B1 (en) * | 1980-10-18 | 1986-02-26 | 스미도모 긴소꾸 고오교오 가부시기가이샤 | Method for producing accumulated steel pipe |
| JP3071441B2 (en) * | 1990-02-03 | 2000-07-31 | 臼井国際産業株式会社 | Multiple wound steel pipe, method for producing the same, and strip used for the same |
| JPH11241105A (en) * | 1998-02-25 | 1999-09-07 | Akihisa Inoue | Production of planar green sheet material from metal granular material and production of brittle metallic sheetlike member or brittle metallic sheet material from the green sheet material |
| EP1052302B2 (en) * | 1998-12-07 | 2015-01-07 | JFE Steel Corporation | High strength cold rolled steel plate and method for producing the same |
| CN101645333B (en) * | 2008-08-05 | 2011-04-20 | 北京有色金属研究总院 | Rolling method for producing copper clad aluminum row |
| CN101559434B (en) * | 2009-05-26 | 2011-07-06 | 秦建平 | Production process for metal composite plates |
| CN101823196A (en) * | 2010-03-19 | 2010-09-08 | 杭州临安仁达高新材料制造有限公司 | Production process of tubular pile end plate and industrial flange |
| JP5566524B2 (en) * | 2011-03-18 | 2014-08-06 | 株式会社日立製作所 | Rolling control device, rolling control method, and rolling control program |
| WO2013187419A1 (en) * | 2012-06-13 | 2013-12-19 | 住友電気工業株式会社 | Magnesium alloy plate and magnesium alloy member |
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2019
- 2019-10-09 CN CN201910952939.0A patent/CN110695093B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0359186A (en) * | 1989-07-22 | 1991-03-14 | Shigeru Hayashi | Production of fibrous material |
| JP2001353583A (en) * | 2000-06-15 | 2001-12-25 | Hitachi Metals Ltd | Method of manufacturing layered member |
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