CN115634931A - Rolling process of ultrathin and ultra-wide checkered plate - Google Patents
Rolling process of ultrathin and ultra-wide checkered plate Download PDFInfo
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- CN115634931A CN115634931A CN202211303511.1A CN202211303511A CN115634931A CN 115634931 A CN115634931 A CN 115634931A CN 202211303511 A CN202211303511 A CN 202211303511A CN 115634931 A CN115634931 A CN 115634931A
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- 238000005096 rolling process Methods 0.000 title claims abstract description 58
- 238000005097 cold rolling Methods 0.000 claims abstract description 37
- 238000004049 embossing Methods 0.000 claims abstract description 21
- 238000005098 hot rolling Methods 0.000 claims abstract description 9
- 238000000137 annealing Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000003801 milling Methods 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 210000002268 wool Anatomy 0.000 claims description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 230000007935 neutral effect Effects 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 4
- 238000010923 batch production Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The invention discloses a rolling process of an ultrathin and ultra-wide checkered plate, which comprises the following steps of: ingot surface milling → heating → hot rolling → cold rolling checkered plate blank → pre-annealing → cold rolling and embossing; in the cold rolling and embossing, the tension before rolling is 3-5N, and the tension after rolling is 4-6N. The ultra-thin and ultra-wide checkered plate rolling process provided by the invention has the advantages that the determination of the tension directly influences the plate shape quality of the checkered plate, and simultaneously directly influences the high rib yield, the stable rolling and embossing forming state is established by adopting the small-tension rolling, the front and rear tension is scientifically matched, the front and rear small-tension matching can effectively control the neutral surface of a rolling deformation area, and the purpose of synchronous deformation of the upper surface and the lower surface is achieved.
Description
Technical Field
The invention relates to the field of rolling methods, in particular to a rolling process of an ultrathin and ultra-wide checkered plate.
Background
At present, the thin and wide checkered plate has huge market potential and high added value of products, but the rolling problem of the thin and wide checkered plate is not solved all the time due to high production difficulty and high technical content.
In the rolling process adopted in the prior art, the produced checkered plate has the widest specification of 1600mm and the thinnest thickness of 1.5mm, and the difficulty is higher when the ultrathin and ultra-wide checkered plate with the specification of 1.0 × 2150 × 4200mm is produced.
Therefore, how to effectively realize the rolling production of the ultrathin and ultra-wide checkered plate is a technical problem which needs to be solved by technical personnel in the field at present.
Disclosure of Invention
The invention aims to provide a rolling process of ultrathin and ultra-wide checkered plates, which is used for realizing batch production of the ultrathin and ultra-wide checkered plates.
In order to achieve the purpose, the invention provides the following technical scheme:
a rolling process of an ultrathin and ultra-wide pattern plate comprises the following steps:
surface milling of cast ingot → heating → hot rolling → cold rolling of pattern plate blank → pre-annealing → cold rolling and embossing; in the cold rolling and embossing, the tension before rolling is 3-5N, and the tension after rolling is 4-6N.
Preferably, in the step cold rolling and embossing, the rolling speed is 0.5M/s-0.8M/s.
Preferably, the rolling roller used in the step of cold rolling and embossing comprises an upper roller and a lower roller, wherein the upper roller is a flat roller, and the lower roller is a pattern roller.
Preferably, the step of cold-rolling the checkered plate blank comprises the following steps of: and cold rolling the cast ingot after hot rolling to obtain checkered plate wool with the thickness of 1.3-1.9mm.
Preferably, the step of cold-rolling the checkered plate blank comprises the following steps of:
and (4) adopting a right-rolling and up production mode to roll up the checkered plate wool.
The invention provides a rolling process of an ultrathin and ultra-wide checkered plate, which comprises the following steps of: ingot surface milling → heating → hot rolling → cold rolling checkered plate blank → pre-annealing → cold rolling and embossing; in the cold rolling and embossing steps, the tension before rolling is 3-5N, and the tension after rolling is 4-6N. According to the ultrathin and ultra-wide checkered plate rolling process provided by the invention, the determination of the tension directly influences the plate shape quality of the checkered plate, and meanwhile, the high yield of ribs is directly influenced.
In a preferred embodiment, the step of cold rolling the checkerboard blank comprises: and (4) adopting a right-rolling and up production mode to roll up the checkered plate wool. According to the arrangement, the uncoiling production mode of the uncoiler in the prior art is replaced by the uncoiling production mode of the right coil, so that the flattening function of the inlet flattening roller of the cold rolling equipment before the strip enters the roller is fully exerted, and a good auxiliary effect is achieved for controlling the shape of the strip.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flow chart of a specific embodiment of the rolling process of the ultra-thin and ultra-wide checkered plate provided by the invention.
Detailed Description
The core of the invention is to provide a rolling process of the ultrathin and ultra-wide checkered plate, which can produce the ultrathin and ultra-wide checkered plate with qualified quality and meet the market demand.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, fig. 1 is a flowchart of an embodiment of a rolling process of an ultra-thin and ultra-wide checkered plate provided by the present invention.
In the embodiment, the rolling process of the ultrathin and ultra-wide checkered plate comprises the following steps of:
step S1: milling the cast ingot; namely, after the ingot is obtained, the surface milling processing is carried out on the ingot;
step S2: heating; heating the cast ingot to a preset temperature;
and step S3: hot rolling; hot rolling the heated cast ingot to obtain a checkered plate blank;
and step S4: cold rolling the rough material of the checkered plate; namely, cold rolling the pattern plate wool to a preset size;
step S5: pre-annealing; namely, pre-annealing treatment is carried out on the cold-rolled checkered plate blank to eliminate residual stress;
step S6: and (4) cold rolling and embossing, namely, cold rolling and embossing are carried out on the annealed checkered plate blank to obtain the ultrathin and ultra-wide checkered plate with the target size.
In the cold rolling and embossing step, the tension before rolling is 3-5N, the tension after rolling is 4-6N, and the tension before rolling is greater than the tension after rolling, and the tension = tension/cross-sectional area of the strip, so as to realize stable rolling.
The ultra-thin and ultra-wide checkered plate rolling process provided by the invention has the advantages that the determination of the tension directly influences the plate shape quality of the checkered plate, and simultaneously directly influences the high rib yield, the stable rolling and embossing forming state is established by adopting the small-tension rolling, the front and rear tension is scientifically matched, the front and rear small-tension matching can effectively control the neutral surface of a rolling deformation area, and the purpose of synchronous deformation of the upper surface and the lower surface is achieved.
In some embodiments, the step cold embossing comprises a rolling speed of 0.5M/s to 0.8M/s. Specifically, since factors affecting the embossing speed and quality include the thickness and width of the blank, the wider the width is, the larger the volume of the deformed region is, the greater the frictional resistance is, and the more difficult it is for the metal to deform and fill the lug grooves. In order to ensure smooth metal flow and improve the pattern forming quality, the rolling speed is reduced, namely low-speed rolling is adopted, and the rolling speed is preferably 0.5-0.8M/s, so that the pattern forming quality and the pattern bottom plate flatness are ensured without cracking.
In some embodiments, the rolling roll used in the step cold-rolling embossing comprises an upper roll and a lower roll, wherein the upper roll is a flat roll, and the lower roll is a pattern roll. According to the arrangement, the upper roller for rolling the checkered plate is the flat roller, the lower roller is the checkered roller, and the metal on the upper surface and the metal on the lower surface of the checkered plate have large difference when the friction and the flow in the deformation area are uneven, and are matched with reasonable front and back tension collocation, so that the purpose of synchronous deformation of the upper surface and the lower surface is achieved.
In some embodiments, the step of cold rolling the checkerboard blank comprises: and (3) cold rolling the cast ingot after hot rolling to obtain checkered plate blanks with the thickness of 1.6 +/-0.3 mm. The finished product of the ultrathin, ultra-wide and small five-rib checkered plate has the specification of 1-1.2mm thickness, 2100-2200mm width, 4100-4300mm length and 2220mm width of the blank, so that the production difficulty is far higher than that of the traditional checkered plate. If the thickness of the reserved blank is thinner, the thickness of the bottom plate of the rolled checkered plate is thinner, and the rib height is difficult to meet the requirements of users; if the reserved blank thickness is too thick, the thickness of the bottom plate is also over thick and does not meet the thickness requirement, so the thickness of the cold-rolled checkered plate blank before embossing is preferably 1.3-1.9mm.
In some embodiments, the step of cold rolling the checkerboard blank comprises: and (4) adopting a right-rolling and rolling production mode to roll the pattern board wool. The cold rolling mill has two coiling modes, namely right coiling and uncoiling, and the coiling mode adopted in the prior art is uncoiling by an uncoiler, so that the cold rolling mill has the advantages of high efficiency, uncoiling of all specifications and low tension, and the right coiling is only for coiled materials of a strip steel sleeve, the thickness of the product is required to be not more than 2.0mm, and the tension is high; in the application, the production mode of uncoiling by the uncoiler in the prior art is replaced by the production mode of coiling on the right coil, so that the flattening function of the inlet flattening roller of the cold rolling equipment before the strip enters the roller is fully exerted, and a good auxiliary effect is achieved for plate shape control.
The rolling process of the ultrathin and ultra-wide checkered plate is popularized by cold rolling in the checkered plate with the width of 2700-2900mm, so that the batch production of the ultrathin and ultra-wide cold-rolled checkered plate can be realized, and better economic benefit and market competitive advantage can be obtained.
The rolling process of the ultrathin and ultra-wide checkered plate provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, it is possible to make various improvements and modifications to the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (5)
1. The rolling process of the ultrathin and ultra-wide checkered plate is characterized by comprising the following steps of:
ingot surface milling → heating → hot rolling → cold rolling checkered plate blank → pre-annealing → cold rolling and embossing; in the cold rolling and embossing steps, the tension before rolling is 3-5N, and the tension after rolling is 4-6N.
2. The ultra-thin and ultra-wide checkered plate rolling process as claimed in claim 1, wherein in the step of cold rolling embossing, the rolling speed is 0.5M/s-0.8M/s.
3. The ultra-thin and ultra-wide checkered plate rolling process as claimed in claim 1, wherein the rollers used in the step of cold rolling and embossing comprise upper rollers and lower rollers, the upper rollers are flat rollers, and the lower rollers are checkered rollers.
4. The ultra-thin, ultra-wide checkered plate rolling process of claim 1, wherein said step of cold rolling checkered plate blanks comprises: and cold rolling the cast ingot after hot rolling to obtain the checkered plate blank with the thickness of 1.3-1.9mm.
5. The ultra-thin, ultra-wide checkerboard rolling process of any of claims 1 to 4, wherein said step of cold rolling a checkerboard blank comprises:
and (4) adopting a right-rolling and up production mode to roll up the checkered plate wool.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211303511.1A CN115634931A (en) | 2022-10-24 | 2022-10-24 | Rolling process of ultrathin and ultra-wide checkered plate |
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| CN202211303511.1A CN115634931A (en) | 2022-10-24 | 2022-10-24 | Rolling process of ultrathin and ultra-wide checkered plate |
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