CN114378403A - Method for rapidly judging longitudinal cutting type of steel grade - Google Patents
Method for rapidly judging longitudinal cutting type of steel grade Download PDFInfo
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- CN114378403A CN114378403A CN202111513586.8A CN202111513586A CN114378403A CN 114378403 A CN114378403 A CN 114378403A CN 202111513586 A CN202111513586 A CN 202111513586A CN 114378403 A CN114378403 A CN 114378403A
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- 238000005520 cutting process Methods 0.000 title claims abstract description 105
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 59
- 239000010959 steel Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000002436 steel type Substances 0.000 claims abstract description 15
- 238000012360 testing method Methods 0.000 claims abstract description 11
- 238000012790 confirmation Methods 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims abstract description 4
- 230000007547 defect Effects 0.000 claims description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 11
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 11
- 229910052748 manganese Inorganic materials 0.000 claims description 11
- 239000011572 manganese Substances 0.000 claims description 11
- 239000002893 slag Substances 0.000 claims description 6
- 229910000677 High-carbon steel Inorganic materials 0.000 claims description 5
- 229910000617 Mangalloy Inorganic materials 0.000 claims description 5
- 238000009499 grossing Methods 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 3
- 239000010955 niobium Substances 0.000 claims description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 238000009966 trimming Methods 0.000 claims description 3
- 238000010408 sweeping Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- 239000000463 material Substances 0.000 abstract description 6
- 230000008520 organization Effects 0.000 abstract description 5
- 230000007704 transition Effects 0.000 abstract description 4
- 238000005096 rolling process Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000009749 continuous casting Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
- B23K7/002—Machines, apparatus, or equipment for cutting plane workpieces, e.g. plates
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
- G01N33/204—Structure thereof, e.g. crystal structure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
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Abstract
The invention particularly relates to a method for rapidly judging the longitudinal cutting type of steel, belonging to the technical field of steel production and comprising the following steps: obtaining a plate blank to be finished; fuzzy judgment: obtaining the longitudinal cutting type of the plate blank to be finished according to the chemical components of the plate blank to be finished; trial cutting of the plate blank: according to the type of the longitudinal cutting, carrying out the operation of the longitudinal cutting on the plate blank to be finished to obtain a test finishing plate blank containing a longitudinal cutting section; and (4) confirmation and judgment: judging whether the longitudinal section of the test finishing plate blank meets a preset index or not; if yes, judging that the steel types of the plate blank to be finished are all suitable for finishing longitudinal cutting operation; the slab is subjected to finishing and slitting operation after judgment, so that short pouring times are reduced, partial width-adjusting transition slabs and slabs which are generated in a production organization mode by adopting online width adjustment and residual materials can be reduced, the small-quantity order exchange rate in a large production mode can be improved, and the edge quality of the finished slab is effectively controlled.
Description
Technical Field
The invention belongs to the technical field of steel production, and particularly relates to a method for rapidly judging the longitudinal cutting type of steel.
Background
With the increasing market competition, steel grades are increased, and at the moment, tundish continuous casting is needed to improve the production efficiency. The number of continuous casting furnaces of the tundish has an important influence on the production, quality and cost of steelmaking.
Therefore, in the actual smelting process, short pouring times are reduced, and many steel plants adopt an online width adjusting and residual material serving as a production organization mode, which can cause partial width adjusting transition blanks and residual materials serving as plate blanks to be finished. In addition, in order to satisfy a multi-specification order mode and improve the low-number order exchange rate in a large production mode, finishing treatment, namely longitudinal cutting treatment, needs to be performed on part of the plate blank. However, the slab is prone to edge quality problems after being slit, and edge cracks, delamination and other defects can be formed after hot rolling and rolling into coils.
Disclosure of Invention
The method for rapidly judging the steel grade longitudinal cutting type is used for carrying out finishing longitudinal cutting operation on a plate blank after judgment, so that the quality problem of the finished part of the plate blank is reduced while a production organization mode of reducing short pouring times is ensured and the small-number order exchange rate in a large production mode is improved.
The embodiment of the invention provides a method for rapidly judging the longitudinal cutting type of a steel grade, which comprises the following steps:
obtaining a plate blank to be finished;
fuzzy judgment: according to the chemical components of the plate blank to be finished, obtaining the longitudinal cutting type of the plate blank to be finished;
trial cutting of the plate blank: according to the longitudinal cutting type, carrying out longitudinal cutting operation on the plate blank to be finished to obtain a test finished plate blank containing a longitudinal cutting profile;
and (4) confirmation and judgment: judging whether the longitudinal section of the test finishing slab meets a preset index or not;
if yes, judging that the steel types of the plate blank to be finished are all suitable for the finishing slitting operation;
if not, adjusting the type of the longitudinal cutting steel type of the plate blank to be finished, and repeating the steps of trial cutting of the plate blank and determination and judgment until the result of determination and judgment is yes, thereby completing the circulation.
Optionally, the slitting type includes a prohibited slitting type or a slitting type; the rip-cuttable types include a center-rip-cuttable type and an edge-rip-cuttable type.
Optionally, the steel billet of the no-slitting type comprises high-carbon steel, high-manganese steel and high-grade pipeline steel, and the carbon content of the high-carbon steel is more than or equal to 0.30% by mass, the manganese content of the high-manganese steel is more than or equal to 1.70% by mass, the carbon content of the high-grade pipeline steel is less than or equal to 0.08% by mass, the manganese content of the high-grade pipeline steel is more than or equal to 1.8% by mass, the niobium content of the high-grade pipeline steel is 0.03% -0.05% by mass, and the titanium content of the high-grade pipeline steel is less than or equal to 0.02% by mass.
Optionally, the intermediate-longitudinally-cuttable steel billet comprises a low-carbon steel and an ultra-low-carbon steel, and the low-carbon steel contains, by mass, not more than 0.10% of carbon, not more than 0.50% of manganese, not more than 0.03% of carbon, and not more than 0.03% of manganese; the slidable types are all of the edgeable slit types.
Optionally, the single-edge allowable trimming amount of the finishing slitting operation of the edge slitting type is less than or equal to 75 mm.
Optionally, a central line of a cutting gun of the finishing slitting operation is perpendicular to the surface of the slab to be finished, and a cutting speed of the finishing slitting operation is 0.3m/min to 0.4 m/min.
Optionally, the preset index is the longitudinal section has no crack defect, shrinkage cavity defect and loose defect.
Optionally, the finishing slitting operation further includes smoothing the slit generated by slitting and cleaning the cutting slag accretion.
Optionally, the method further includes:
and (3) accurate judgment: according to the database information, obtaining the longitudinal cutting type of the plate blank to be finished;
establishing a database: and recording the steel grade and the longitudinal cutting type which are judged to be yes in the step of determining, and obtaining the database.
Optionally, the method further includes: carrying out finishing and longitudinal cutting operation on the plate blank corresponding to the steel grade after judging that the steel grade of the plate blank to be finished is all suitable for the finishing and longitudinal cutting operation according to the target width to obtain a finished plate blank; the deviation between the width of the finishing slab and the target width is less than or equal to 25 mm.
One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
according to the method for rapidly judging the steel grade longitudinal cutting type, provided by the embodiment of the invention, a plate blank to be finished is obtained; fuzzy judgment: obtaining the longitudinal cutting type of the plate blank to be finished according to the chemical components of the plate blank to be finished; trial cutting of the plate blank: according to the type of the longitudinal cutting, carrying out the operation of the longitudinal cutting on the plate blank to be finished to obtain a test finishing plate blank containing a longitudinal cutting section; and (4) confirmation and judgment: judging whether the longitudinal section of the test finishing plate blank meets a preset index or not; if yes, judging that the steel types of the plate blank to be finished are all suitable for finishing longitudinal cutting operation; the slab is subjected to finishing and slitting operation after judgment, so that short pouring times are reduced, partial width-adjusting transition slabs and slabs which are generated in a production organization mode by adopting online width adjustment and residual materials can be reduced, the small-quantity order exchange rate in a large production mode can be improved, and the edge quality of the finished slab is effectively controlled.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a flow chart of a method provided by an embodiment of the invention.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments and examples, and the advantages and various effects of the present invention will be more clearly apparent therefrom. It will be understood by those skilled in the art that these specific embodiments and examples are for the purpose of illustrating the invention and are not to be construed as limiting the invention.
Throughout the specification, unless otherwise specifically noted, terms used herein should be understood as having meanings as commonly used in the art. Accordingly, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. If there is a conflict, the present specification will control.
Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by existing methods.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows:
according to an exemplary embodiment of the present invention, there is provided a method for rapidly judging a type of a steel grade slit, the method including:
s1, preliminarily judging whether the steel type of the plate blank is a non-slitting type or a slitting type, wherein the slitting type comprises a middle slitting type and an edge slitting type;
the applicant finds in the course of the invention that: part of the steel grades have special purposes, the center of the part of the steel grades is easy to be loosened, the defects are exposed on the surface layer after longitudinal cutting, and the defects cannot be healed in the rolling process, so the following steel grades are forbidden to be longitudinally cut (namely the types of the forbidden longitudinal cutting): high carbon steel (carbon content is more than or equal to 0.30%), high manganese steel (manganese content is more than or equal to 1.70%) and high-grade pipeline steel (carbon content is less than or equal to 0.08%, manganese content is more than or equal to 1.8%, niobium content is 0.03% -0.05%, and titanium content is less than or equal to 0.02%).
Except the steel grades which are forbidden to be longitudinally cut, the other steel grades can be longitudinally cut at the edge part, in order to avoid the situation that the triangular area is loose and naked after longitudinal cutting, the single-edge allowable trimming amount is less than or equal to 75mm, one plate blank is firstly organized to be longitudinally cut, and after the defect is detected, other plate blanks are organized to be longitudinally cut one by one.
Intermediate rip types include: low-carbon steel (carbon content is less than or equal to 0.10 percent and manganese content is less than or equal to 0.50 percent) and ultra-low-carbon steel (carbon content is less than or equal to 0.03 percent and manganese content is less than or equal to 0.03 percent) can be longitudinally cut in the middle.
S2, carrying out corresponding longitudinal cutting operation on the plate blank which belongs to the intermediate longitudinal cutting type or the edge longitudinal cutting type according to the target width to obtain a test finishing plate blank;
as an alternative embodiment, the requirements for the slitting operation are: the state of the burner is checked before cutting, so that the smoothness of the burner is guaranteed. The central line of the cutting gun is perpendicular to the surface of the slab, and the advancing direction of the nozzle of the cutting gun is overlapped with the cutting line.
In order to ensure the width of the plate blank after longitudinal cutting, the cutting seam is considered to be 8mm, and is reserved in advance when the cutting line is determined.
The cutting speed is controlled according to 0.3-0.4m/min, and the cutting effect is poor and the cutting slag accretion is serious due to the over-high cutting speed, so that the processing time is increased and the processing efficiency is reduced.
S3, inspecting the longitudinal section of the test finishing plate blank;
as an alternative embodiment, the requirements for the test are: inspecting the longitudinal cutting section of the plate blank, wherein the defects of cracks, shrinkage cavities, looseness and the like cannot exist, judging waste when the internal defects exist, and stopping the longitudinal cutting of the subsequent plate blank of the same steel type; the notch defect in the cutting process must be smoothed, and the cutting slag accretion is cleaned up
S3.1, if the plate blank is not qualified, scratching the plate blank into other steel types;
for example, when the slab is preliminarily determined to be an edge slitting steel type which can be slit, and when the edge slitting is performed, the above defect is present in the undercut cross section, the slab is described as a non-slit steel type.
S3.2, if the plate blank is qualified, carrying out corresponding longitudinal cutting operation on the plate blank to obtain information of a finished plate blank and a steel grade, and carrying out size measurement on the longitudinally cut finished plate blank; after the measurement and the inspection are qualified, directly entering the next procedure;
and S4, recording the steel grade information to obtain a steel grade information database.
In actual production, a steel grade information database is continuously improved, so that the steel grade information database is enough suitable for almost all steel grades, the steel grade is quickly judged to be unsuitable for longitudinal cutting when the plate blank needs to be finished, the plate blank longitudinal cutting method is suitable for the longitudinal cutting of the steel grade, the use and scheduling of the plate blank are more flexible, the small-number order form rate under a large production mode is greatly improved, and the edge quality after the longitudinal cutting can be ensured.
As an optional implementation mode, the deviation between the width of the finished plate blank and the target width is less than or equal to 25mm, if the deviation is not met, the actual size of the plate blank is rounded and reduced, and a planning person is guided to schedule production. And (4) directly entering the subsequent process for the qualified slab.
The method for finishing a slab of the present application will be described in detail with reference to examples.
Example 1
The casting blank to be finished is: high grade pipeline steel X80; and (3) preliminarily judging that the width of the plate blank does not meet the requirement of the order, adopting double-side longitudinal cutting of 45mm, reserving according to a joint cutting of 8mm, and checking the longitudinal cutting section of the plate blank after cutting to have crack defects, thereby proving that the steel type is the steel type prohibited from longitudinal cutting.
Example 2
The casting blank to be finished is: the slab width of the low carbon Steel (SPHC) and the grade SPHC steel is 2000mm, no formal order is made, and the slab can be used for rolling a formal order with the width of 950mm by adopting an intermediate longitudinal cutting mode in order to reduce the slab stock and preliminarily judge the slab as an intermediate longitudinal cutting steel grade. And (5) checking the burner before cutting to ensure that the burner is smooth. The cutting line is ensured to be coincident with the width center line of the plate blank. And after cutting, inspecting the longitudinal section of the plate blank, wherein the longitudinal section of the plate blank has no defects such as cracks, shrinkage cavities, looseness and the like, smoothing the gap defects in the cutting process, cleaning cutting slag nodules, measuring the size after cutting, and rolling the plate blank meeting the requirements in the next procedure.
Example 3
The casting blank to be finished is: the ultra-low carbon steel (SDC06), the 1300mm width specification high-grade surface requires the order debt of 20 tons, and a 1700mm width SDC06 slab with the same grade as the steel type is arranged in the slab library, and can not be used only by hot rolling and width reducing rolling. In order to avoid short casting times, judging the steel type belonging to edge longitudinal cutting, adopting double-edge longitudinal cutting, and reducing the width of the plate blank from 1700mm to 1500mm to meet the order requirement by auxiliary width reduction rolling.
The method comprises the steps of firstly measuring the width central points of the head end face and the tail end face of a plate blank, connecting the two central points to determine the longitudinal central line of the plate blank, then respectively returning half of the width value of the longitudinally cut plate blank along the central line to two sides, and determining two cutting lines which are parallel to the longitudinal central line. The burner is checked before cutting, the burner is smooth, the central line of the cutting gun is vertical to the surface of the slab, and the advancing direction of the burner of the cutting gun is coincident with the cutting line. Considering the cutting seam of 8mm, the final cutting is carried out according to the cutting of 92mm of the edge part. And after cutting, inspecting the longitudinal section of the plate blank, wherein the longitudinal section of the plate blank has no defects such as cracks, shrinkage cavities, looseness and the like, smoothing the gap defects in the cutting process, cleaning the cutting slag nodules, measuring the size after cutting to be 1500mm, and enabling the plate blank to enter the next process.
One or more technical solutions in the embodiments of the present invention at least have the following technical effects or advantages:
the method provided by the embodiment of the invention not only reduces the short pouring times, but also can reduce the partial width-adjusting transition blanks generated in the mode of online width adjustment and residual materials serving as production organization and the plate blanks serving as residual materials, can improve the small-quantity order exchange rate in the large-scale production mode, and effectively controls the edge quality of the finished plate blanks.
Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A method for rapidly judging the longitudinal cutting type of a steel grade is characterized by comprising the following steps:
obtaining a plate blank to be finished;
fuzzy judgment: according to the chemical components of the plate blank to be finished, obtaining the longitudinal cutting type of the plate blank to be finished;
trial cutting of the plate blank: according to the longitudinal cutting type, carrying out longitudinal cutting operation on the plate blank to be finished to obtain a test finished plate blank containing a longitudinal cutting profile;
and (4) confirmation and judgment: judging whether the longitudinal section of the test finishing slab meets a preset index or not;
if yes, judging that the steel types of the plate blank to be finished are all suitable for the finishing slitting operation;
if not, adjusting the type of the longitudinal cutting steel type of the plate blank to be finished, and repeating the steps of trial cutting of the plate blank and determination and judgment until the result of determination and judgment is yes, thereby completing the circulation.
2. The method for rapidly judging the type of steel grade slitting according to claim 1, wherein the type of slitting comprises a prohibited type of slitting or a cuttable type; the rip-cuttable types include a center-rip-cuttable type and an edge-rip-cuttable type.
3. The method for rapidly judging the type of steel grade slitting as claimed in claim 2, wherein the steel slab of the type of steel grade slitting comprises high carbon steel, high manganese steel and high grade pipeline steel, the carbon content of the high carbon steel is not less than 0.30%, the manganese content of the high manganese steel is not less than 1.70%, the carbon content of the high grade pipeline steel is not more than 0.08%, the manganese content of the high grade pipeline steel is not less than 1.8%, the niobium content of the high grade pipeline steel is 0.03% -0.05%, and the titanium content of the high grade pipeline steel is not more than 0.02% in mass fraction.
4. The method of claim 2, wherein the steel slab of the intermediate-cuttable type comprises a low-carbon steel having a carbon content of 0.10% or less, a low-carbon steel having a manganese content of 0.50% or less, an ultra-low-carbon steel having a carbon content of 0.03% or less, and an ultra-low-carbon steel having a manganese content of 0.03% or less, in terms of mass fraction; the slidable types are all of the edgeable slit types.
5. The method for rapidly judging the type of steel grade slitting according to claim 2, wherein the single-edge allowable trimming amount of the finishing slitting operation of the edgeable slitting type is 75mm or less.
6. The method for rapidly judging the type of steel grade slitting according to claim 1, characterized in that the cutting gun centerline of the finishing slitting operation is perpendicular to the surface of the slab to be finished, and the cutting speed of the finishing slitting operation is 0.3m/min to 0.4 m/min.
7. The method for rapidly judging the type of steel grade longitudinal cutting according to claim 1, wherein the preset indexes are that the longitudinal cutting section has no crack defect, shrinkage cavity defect and loose defect.
8. The method for rapidly judging the type of steel grade slitting according to claim 1, wherein the finishing slitting operation further comprises smoothing a slit generated by slitting and sweeping a cutting slag accretion.
9. The method for rapidly judging the type of steel grade slitting according to claim 1, further comprising:
and (3) accurate judgment: according to the database information, obtaining the longitudinal cutting type of the plate blank to be finished;
establishing a database: and recording the steel grade and the longitudinal cutting type which are judged to be yes in the step of determining, and obtaining the database.
10. The method for rapidly judging the type of steel grade slitting according to claim 1, further comprising: carrying out finishing and longitudinal cutting operation on the plate blank corresponding to the steel grade after judging that the steel grade of the plate blank to be finished is all suitable for the finishing and longitudinal cutting operation according to the target width to obtain a finished plate blank; the deviation between the width of the finishing slab and the target width is less than or equal to 25 mm.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB715777A (en) * | 1952-01-04 | 1954-09-22 | Glacier Co Ltd | A method of testing composite metallic material |
| CN103460030A (en) * | 2011-01-31 | 2013-12-18 | 新日铁住金株式会社 | Steel type assessment method for steel material |
| CN105203732A (en) * | 2015-09-14 | 2015-12-30 | 武汉钢铁(集团)公司 | Spring steel slab component segregation quantitative analysis method |
| CN105807025A (en) * | 2016-05-18 | 2016-07-27 | 洛阳Lyc轴承有限公司 | Method for distinguishing type of high-carbon-chromium bearing steel metallographic structure |
| CN110369826A (en) * | 2019-06-21 | 2019-10-25 | 中船黄埔文冲船舶有限公司 | A kind of numerical control nesting method and system |
| CN111537691A (en) * | 2020-04-27 | 2020-08-14 | 江苏省沙钢钢铁研究院有限公司 | Square billet center macrosegregation analysis method |
| CN112949108A (en) * | 2021-01-25 | 2021-06-11 | 北京科技大学 | Hot-rolled high-strength steel plate shape defect full-flow prediction method and graphical user interface |
-
2021
- 2021-12-13 CN CN202111513586.8A patent/CN114378403B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB715777A (en) * | 1952-01-04 | 1954-09-22 | Glacier Co Ltd | A method of testing composite metallic material |
| CN103460030A (en) * | 2011-01-31 | 2013-12-18 | 新日铁住金株式会社 | Steel type assessment method for steel material |
| CN105203732A (en) * | 2015-09-14 | 2015-12-30 | 武汉钢铁(集团)公司 | Spring steel slab component segregation quantitative analysis method |
| CN105807025A (en) * | 2016-05-18 | 2016-07-27 | 洛阳Lyc轴承有限公司 | Method for distinguishing type of high-carbon-chromium bearing steel metallographic structure |
| CN110369826A (en) * | 2019-06-21 | 2019-10-25 | 中船黄埔文冲船舶有限公司 | A kind of numerical control nesting method and system |
| CN111537691A (en) * | 2020-04-27 | 2020-08-14 | 江苏省沙钢钢铁研究院有限公司 | Square billet center macrosegregation analysis method |
| CN112949108A (en) * | 2021-01-25 | 2021-06-11 | 北京科技大学 | Hot-rolled high-strength steel plate shape defect full-flow prediction method and graphical user interface |
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