CN106694637A - Automatic straightening method for high-yield-strength low alloy steel - Google Patents
Automatic straightening method for high-yield-strength low alloy steel Download PDFInfo
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- CN106694637A CN106694637A CN201611112673.1A CN201611112673A CN106694637A CN 106694637 A CN106694637 A CN 106694637A CN 201611112673 A CN201611112673 A CN 201611112673A CN 106694637 A CN106694637 A CN 106694637A
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- yield strength
- alloy steel
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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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/004—Bending sheet metal along straight lines, e.g. to form simple curves with program control
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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
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/006—Bending sheet metal along straight lines, e.g. to form simple curves combined with measuring of bends
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/18—Manufacturability analysis or optimisation for manufacturability
Abstract
The invention discloses an automatic straightening method for high-yield-strength low alloy steel. The yield strength of the high-yield-strength low alloy steel and the thickness of a steel plate at 450-600 MPa are determined first, and then the yield strength and the thickness of the steel plate are input into a straightening model, actual straightening force is obtained, and the high-yield-strength low alloy steel is straightened. According to the automatic straightening method, the yield strength of the high-yield-strength low alloy steel and the thickness of the steel plate are used as input parameters to be input into the autonomous-setting straightening model, and the actual straightening force is calculated, so that the high-yield-strength low alloy steel is straightened automatically, and excellent plate shape quality can be achieved after straightening.
Description
Technical field
The application is related to Heavy Plate Production field, more particularly to a kind of automatic flattening side of high-yield strength low-alloy steel
Method.
Background technology
Heavy Plate Production straightening process, as an important step of cut deal quality assurance, determines the final of product
Strip shape quality, the foundation of straightening process parameter automodel is the key technology for ensureing straightening quality.
At present, cut deal straightening process aligning Hi-Stren steel production in, due to influence straightening process parameter it is many,
Produce reality situation is complicated, and the application of whole process automatic flattening technology is not enough, it is difficult to ensure the automatic flattening matter of high intensity levels steel
Amount.
The content of the invention
Invention provides a kind of automatic flattening method of high-yield strength low-alloy steel, for 400-600MPa's
High-yield strength low-alloy steel, to solve the technical problem of the automatic flattening quality for being difficult to ensure that high intensity levels steel at present.This
The method of invention is implemented based on an automatic flattening model, and the model can realize the whole process to aligning operation from after rolling
Automatically control, and yield strength can be made to reach the plate shape matter of high-quality after the low-alloy steel automatic flattening of 450-600MPa
Amount.
In order to solve the above technical problems, the invention provides a kind of automatic flattening method of high-yield strength low-alloy steel,
Including：
The high-yield strength low-alloy steel is transported into temperature measurer carries out thermometric, obtains the high-yield strength low-alloy
Temperature of the steel after by the cold technique of control；
The high-yield strength is obtained based on temperature of the high-yield strength low-alloy steel after by the cold technique of control
The yield strength of low-alloy steel；
The high-yield strength low-alloy steel is transported into calibrator carries out thickness measuring, obtains the high-yield strength low-alloy
First steel plate thickness of steel；
The first steel plate thickness and the high-yield strength low-alloy steel based on the high-yield strength low-alloy steel bend
Intensity is taken, the actual straightening power of aligning model is obtained；Wherein, the actual straightening power of the aligning model is obtained by below equation：
Wherein, the actual straightening power of F-aligning model, KN；σ-high-yield strength is low
The yield strength of steel alloy, 450MPa≤σ≤600MPa, N/mm2；B-steel plate width, mm；H-the first steel plate thickness, mm；
T-roll spacing mm；β-correction factor；
Actual straightening power based on the aligning model is aligned to the high-yield strength low-alloy steel.
Preferably, the temperature based on the high-yield strength low-alloy steel after by the cold technique of control obtains described
The yield strength of high-yield strength low-alloy steel, including：
The high-yield strength low-alloy steel is obtained by the temperature after rolling mill practice；
Temperature and the high-yield strength based on the high-yield strength low-alloy steel after by the cold technique of control is low
Steel alloy obtains the yield strength of the high-yield strength low-alloy steel by the temperature after rolling mill practice.
Preferably, the yield strength σ of the high-yield strength low-alloy steel is obtained by below equation：
σ=425.34+0.22T1-0.13T2, wherein, T1- high-yield strength the low-alloy steel by rolling mill practice it
Temperature afterwards；T2Temperature of-high-yield strength the low-alloy steel after by the cold technique of control.
Preferably, 800KN≤F≤1800KN.
Preferably, 0.8≤β≤1.1.
Preferably, the actual straightening power based on the aligning model is rectified to the high-yield strength low-alloy steel
Before straight, including：
Judge the accumulative fluctuation number of times of the thickness of the high-yield strength low-alloy steel whether less than or equal to 2 times；
Judge the fluctuation range of thickness of the high-yield strength low-alloy steel whether less than or equal to 3.5mm；
If the accumulative fluctuation number of times of the thickness of the high-yield strength low-alloy steel is less than or equal to 2 times, and described high in the wrong
The fluctuation range of thickness of strength low alloy steel is taken less than or equal to 3.5mm, then starts the aligning model strong to the high yield
Degree low-alloy steel is aligned.
Preferably, the actual straightening power based on the aligning model is rectified to the high-yield strength low-alloy steel
After straight, including：
Determine the second steel plate thickness of the high-yield strength low-alloy steel；
Judge the second steel plate thickness of the high-yield strength low-alloy steel whether less than or equal to default steel plate thickness threshold value；
If so, the second steel plate thickness based on the high-yield strength low-alloy steel determines the aligning of the aligning model
Drafts；
The high-yield strength low-alloy steel is aligned using the aligning drafts of the aligning model.
Preferably, second steel plate thickness based on the high-yield strength low-alloy steel determines the aligning model
Aligning drafts, specifically include：
The aligning drafts of the aligning model is obtained using below equation：
h1=17.6-0.08h2 2, wherein：h1- aligning drafts, mm；h2- the first steel plate thickness, mm.
By one or more technical scheme of the invention, the invention has the advantages that or advantage：
The invention discloses a kind of automatic flattening method of high-yield strength low-alloy steel, first determine 450-600MPa's
The yield strength and steel plate thickness of high-yield strength low-alloy steel, then obtain yield strength and steel plate thickness input aligning model
Actual straightening power is obtained to align high-yield strength low-alloy steel.Because the present invention is to make use of high-yield strength low-alloy steel
Yield strength and steel plate thickness calculate actual straightening power as the autonomous aligning model for setting of |input paramete input, so energy
Targetedly to yield strength for low-alloy steel carries out automatic flattening, and the strip shape quality of high-quality can be reached after aligning.
Brief description of the drawings
Fig. 1 is a kind of implementation process figure of the automatic flattening method of high-yield strength low-alloy steel in the embodiment of the present invention.
Specific embodiment
In order that the application the technical staff in the technical field is more clearly understood that the application, below in conjunction with the accompanying drawings,
Technical scheme is described in detail by specific embodiment.
The invention discloses a kind of automatic flattening method of high-yield strength low-alloy steel, by analyzing specific process parameter
Relation between actual yield strength, aligning roll structure, straightening force, establishes straightening process Automatic parameter model；By rectifying
Straight mechanics, linear regression and interactive analysis, and produce reality is combined, establish the low conjunctions of yield strength (450-600) MPa
The automatic flattening model of Jin Gang.Using the model, with reference to automatic measuring thickness optimisation technique before rectifying, input onsite application works well.
The method achieve current cut deal Hi-Stren steel straightening process efficiently and safety automation production, to thick in raising
The quality of production of plate is significant.
It is a kind of specific reality of the automatic flattening method of high-yield strength low-alloy steel of the invention referring now to Fig. 1
Apply process.
Step 11, the high-yield strength low-alloy steel is transported into temperature measurer carries out thermometric, obtains the high yield strong
Temperature of the degree low-alloy steel after by the cold technique of control.
In specific implementation process, high-yield strength low-alloy steel, can be automatically into control after by rolling mill practice
Cold technique is lowered the temperature.
After controlling cold technique and finishing, temperature detection can be carried out to high-yield strength low-alloy steel automatically, judge high yield
Whether strength low alloy steel is higher than the temperature threshold of the cold technique setting of control, if being higher than the temperature threshold, then it represents that high-yield strength
Low-alloy steel is qualified, then controlling cold technique can show that detection signal is normal when being detected to it.
Then, then high-yield strength low-alloy steel can be run to temperature measurer using full-automatic step cooling bed, measurement is obtained
The actual temperature after by the cold technique of control of high-yield strength low-alloy steel.
Step 12, obtains described high in the wrong based on temperature of the high-yield strength low-alloy steel after by the cold technique of control
Take the yield strength of strength low alloy steel.
In specific implementation process, it is determined that high-yield strength low-alloy steel yield strength when, first obtain the height
Yield strength low-alloy steel is by the temperature after rolling mill practice.Again based on the high-yield strength low-alloy steel cold by control
Temperature and the high-yield strength low-alloy steel after technique obtain the high yield strong by the temperature after rolling mill practice
Spend the yield strength of low-alloy steel.
The yield strength σ of the high-yield strength low-alloy steel is obtained by below equation：
σ=425.34+0.22T1-0.13T2... ... ... .. formula 1
T1- high-yield strength the low-alloy steel is by the temperature after rolling mill practice；
T2Temperature of-high-yield strength the low-alloy steel after by the cold technique of control.
Used as a kind of optional embodiment, the scope of the yield strength of high-yield strength low-alloy steel of the invention is：
450MPa≤σ≤600MPa。
Step 13, the high-yield strength low-alloy steel is transported into calibrator carries out thickness measuring, obtains the high yield strong
Spend the first steel plate thickness of low-alloy steel；
In specific implementation process, high-yield strength low-alloy steel is transported by full-automatic step cooling bed and is entered to calibrator
Row measurement.
Step 14, the first steel plate thickness and the high-yield strength low-alloy based on the high-yield strength low-alloy steel
The yield strength of steel, obtains the actual straightening power of aligning model.
Wherein, the actual straightening power of the aligning model is obtained by below equation：
The actual straightening power of F-aligning model, KN；
The yield strength of σ-high-yield strength low-alloy steel, N/mm2；
B-steel plate width, mm；
H-the first steel plate thickness, mm；
T-roll spacing mm；
β-correction factor；0.8≤β≤1.1.
Used as a kind of optional embodiment, aligning the scope of the actual straightening power of model is：800KN≤F≤1800KN.
Step 15, the actual straightening power based on the aligning model is aligned to the high-yield strength low-alloy steel.
Before step 15 is performed, in addition it is also necessary to judge whether high-yield strength low-alloy steel meets condition, if meeting, can
It is aligned with automatic aligning model.
Specific implementation process is as follows：
Judge the accumulative fluctuation number of times of the thickness of the high-yield strength low-alloy steel whether less than or equal to 2 times；
Judge the fluctuation range of thickness of the high-yield strength low-alloy steel whether less than or equal to 3.5mm；
If the accumulative fluctuation number of times of the thickness of the high-yield strength low-alloy steel is less than or equal to 2 times, and described high in the wrong
The fluctuation range of thickness of strength low alloy steel is taken less than or equal to 3.5mm, then starts the aligning model strong to the high yield
Degree low-alloy steel is aligned.
Below it is then the automatic flattening mode of high-yield strength low-alloy steel of the invention, first measurement obtains high-yield strength
The yield strength and steel plate thickness of low-alloy steel, then using align model obtain actual straightening power to high-yield strength low-alloy
Steel is aligned, so yield strength can be directed to for the low-alloy steel of 450-600MPa carries out automatic flattening, and in aligning
The strip shape quality of high-quality can be reached afterwards.
Used as a kind of optional embodiment, aligning model of the invention has the second program.When using the reality for aligning model
After border straightening force is aligned to the high-yield strength low-alloy steel, if steel plate thickness reaches condition, height can be bent again
Strength low alloy steel is taken to be aligned.
In specific implementation process, in the actual straightening power based on the aligning model to the low conjunction of the high-yield strength
After Jin Gang is aligned, including：
Determine the second steel plate thickness of the high-yield strength low-alloy steel；
Judge the second steel plate thickness of the high-yield strength low-alloy steel whether less than or equal to default steel plate thickness threshold value；
For example, it is 12mm to preset steel plate thickness threshold value, if so the second steel plate thickness≤12mm, then it represents that meet condition.
If so, the second steel plate thickness based on the high-yield strength low-alloy steel determines the aligning of the aligning model
Drafts.In specific implementation process, the aligning drafts of the aligning model is obtained using below equation：
h1=17.6-0.08h2 2... ... ... formula 3
h1- aligning drafts, mm；
h2- the first steel plate thickness, mm.
The high-yield strength low-alloy steel is aligned using the aligning drafts of the aligning model.
By one or more embodiment of the invention, the invention has the advantages that or advantage：
The invention discloses a kind of automatic flattening method of high-yield strength low-alloy steel, first determine 450-600MPa's
The yield strength and steel plate thickness of high-yield strength low-alloy steel, then obtain yield strength and steel plate thickness input aligning model
Actual straightening power is obtained to align high-yield strength low-alloy steel.Because the present invention is to make use of high-yield strength low-alloy steel
Yield strength and steel plate thickness calculate actual straightening power as the autonomous aligning model for setting of |input paramete input, so energy
Targetedly to yield strength for low-alloy steel carries out automatic flattening, and the strip shape quality of high-quality can be reached after aligning.
Although having been described for the preferred embodiment of the application, one of ordinary skilled in the art once knows substantially
Creative concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to bag
Include preferred embodiment and fall into having altered and changing for the application scope.
Obviously, those skilled in the art can carry out the essence of various changes and modification without deviating from the application to the application
God and scope.So, if these modifications of the application and modification belong to the scope of the application claim and its equivalent technologies
Within, then the application is also intended to comprising these changes and modification.
Claims (8)
1. a kind of automatic flattening method of high-yield strength low-alloy steel, it is characterised in that including：
The high-yield strength low-alloy steel is transported into temperature measurer carries out thermometric, obtains the high-yield strength low-alloy steel and exists
By controlling the temperature after cold technique；
The low conjunction of high-yield strength is obtained based on temperature of the high-yield strength low-alloy steel after by the cold technique of control
The yield strength of Jin Gang；
The high-yield strength low-alloy steel is transported into calibrator carries out thickness measuring, obtains the high-yield strength low-alloy steel
First steel plate thickness；
The surrender of the first steel plate thickness and the high-yield strength low-alloy steel based on the high-yield strength low-alloy steel is strong
Degree, obtains the actual straightening power of aligning model；Wherein, the actual straightening power of the aligning model is obtained by below equation：
Wherein, the actual straightening power of F-aligning model, KN；σ-high-yield strength the low-alloy steel
Yield strength, 450MPa≤σ≤600MPa, N/mm2；B-steel plate width, mm；H-the first steel plate thickness, mm；T-roll spacing
mm；β-correction factor；
Actual straightening power based on the aligning model is aligned to the high-yield strength low-alloy steel.
2. the method for claim 1, it is characterised in that it is described based on the high-yield strength low-alloy steel by controlling
Temperature after cold technique obtains the yield strength of the high-yield strength low-alloy steel, including：
The high-yield strength low-alloy steel is obtained by the temperature after rolling mill practice；
Temperature and the high-yield strength low-alloy based on the high-yield strength low-alloy steel after by the cold technique of control
Steel obtains the yield strength of the high-yield strength low-alloy steel by the temperature after rolling mill practice.
3. method as claimed in claim 2, it is characterised in that the yield strength σ of the high-yield strength low-alloy steel by with
Lower formula is obtained：
σ=425.34+0.22T1-0.13T2, wherein, T1After-high-yield strength the low-alloy steel is by rolling mill practice
Temperature；T2Temperature of-high-yield strength the low-alloy steel after by the cold technique of control.
4. the method for claim 1, it is characterised in that 800KN≤F≤1800KN.
5. the method for claim 1, it is characterised in that 0.8≤β≤1.1.
6. the method for claim 1, it is characterised in that the actual straightening power based on the aligning model is to described
Before high-yield strength low-alloy steel is aligned, including：
Judge the accumulative fluctuation number of times of the thickness of the high-yield strength low-alloy steel whether less than or equal to 2 times；
Judge the fluctuation range of thickness of the high-yield strength low-alloy steel whether less than or equal to 3.5mm；
If the accumulative fluctuation number of times of the thickness of the high-yield strength low-alloy steel is less than or equal to 2 times, and the high yield is strong
The fluctuation range for spending the thickness of low-alloy steel is less than or equal to 3.5mm, then start the aligning model low to the high-yield strength
Steel alloy is aligned.
7. the method for claim 1, it is characterised in that the actual straightening power based on the aligning model is to described
After high-yield strength low-alloy steel is aligned, including：
Determine the second steel plate thickness of the high-yield strength low-alloy steel；
Judge the second steel plate thickness of the high-yield strength low-alloy steel whether less than or equal to default steel plate thickness threshold value；
If so, the second steel plate thickness based on the high-yield strength low-alloy steel determines the aligning pressure of the aligning model
Amount；
The high-yield strength low-alloy steel is aligned using the aligning drafts of the aligning model.
8. method as claimed in claim 7, it is characterised in that second steel based on the high-yield strength low-alloy steel
Plate thickness determines the aligning drafts of the aligning model, specifically includes：
The aligning drafts of the aligning model is obtained using below equation：
h1=17.6-0.08h2 2, wherein：h1- aligning drafts, mm；h2- the first steel plate thickness, mm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111014351A (en) * | 2019-12-17 | 2020-04-17 | 无锡隆达金属材料有限公司 | Method for controlling yield strength of nickel tube by multi-inclined-roller straightening |
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| CN111014351B (en) * | 2019-12-17 | 2021-07-30 | 江苏隆达超合金股份有限公司 | Method for controlling yield strength of nickel tube by multi-inclined-roller straightening |
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| Publication number | Publication date |
|---|---|
| CN106694637B (en) | 2018-07-31 |
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