CN106694637B - A kind of automatic flattening method of high-yield strength low-alloy steel - Google Patents
A kind of automatic flattening method of high-yield strength low-alloy steel Download PDFInfo
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- CN106694637B CN106694637B CN201611112673.1A CN201611112673A CN106694637B CN 106694637 B CN106694637 B CN 106694637B CN 201611112673 A CN201611112673 A CN 201611112673A CN 106694637 B CN106694637 B CN 106694637B
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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
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- 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 a kind of automatic flattening methods of high-yield strength low-alloy steel, it first determines the yield strength and steel plate thickness of the high-yield strength low-alloy steel of 450-600MPa, then yield strength and steel plate thickness input aligning model is obtained actual straightening power and aligned to high-yield strength low-alloy steel.Due to the present invention be utilized high-yield strength low-alloy steel yield strength and steel plate thickness calculate actual straightening power as the input parameter aligning model that is independently arranged of input, so can automatic flattening targetedly be carried out to high-yield strength low-alloy steel, and good strip shape quality can be reached after aligning.
Description
Technical field
This application involves Heavy Plate Production field more particularly to a kind of automatic flattening sides of high-yield strength low-alloy steel
Method.
Background technology
Heavy Plate Production straightening process determines the final of product as an important link of cut deal quality assurance
Strip shape quality, the foundation of straightening process parameter automodel are to ensure the key technology of straightening quality.
Currently, cut deal straightening process is in aligning Hi-Stren steel production, it is more due to influencing straightening process parameter,
Produce reality situation is complicated, and the application of whole process automatic flattening technology is insufficient, it is difficult to ensure the automatic flattening matter of high intensity levels steel
Amount.
Invention content
Invention provides a kind of automatic flattening methods of high-yield strength low-alloy steel, for 400-600MPa's
High-yield strength low-alloy steel, to solve current the technical issues of being difficult to ensure the automatic flattening quality of high intensity levels steel.This
The method of invention is implemented based on an automatic flattening model, which can realize after rolling to the whole process of aligning process
It automatically controls, and reaches good plate form quality after the low-alloy steel automatic flattening that yield strength is 450-600MPa can be made
Amount.
In order to solve the above technical problems, the present 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 to temperature measurer and carries out thermometric, obtains the high-yield strength low-alloy
Steel is in the temperature after controlling cold technique；
Based on the high-yield strength low-alloy steel in the temperature acquisition high-yield strength after controlling cold technique
The yield strength of low-alloy steel；
The high-yield strength low-alloy steel is transported to calibrator and 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 are bent
Intensity is taken, the actual straightening power of aligning model is obtained；Wherein, the actual straightening power of the aligning model is obtained by following formula：
Wherein, the actual straightening power of the F-aligning models, KN；σ-the high-yield strengths
The yield strength of low-alloy steel, 450MPa≤σ≤600MPa, N/mm2；B-steel plate width, mm；The first steel plate thickness of h-, mm；
T-roll spacing mm；β-correction factor；
Actual straightening power based on the aligning model aligns the high-yield strength low-alloy steel.
Preferably, described to be passed through described in the temperature acquisition after controlling cold technique based on the high-yield strength low-alloy steel
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；
Based on the high-yield strength low-alloy steel low by controlling temperature after cold technique and the high-yield strength
Steel alloy passes through the temperature after rolling mill practice, obtains the yield strength of the high-yield strength low-alloy steel.
Preferably, the yield strength σ of the high-yield strength low-alloy steel is obtained by following formula：
σ=425.34+0.22T1-0.13T2, wherein T1- high-yield strength the low-alloy steel by rolling mill practice it
Temperature afterwards；T2- high-yield strength the low-alloy steel is in the temperature after controlling cold technique.
Preferably, 800KN≤F≤1800KN.
Preferably, 0.8≤β≤1.1.
Preferably, the actual straightening power based on the aligning model rectifys the high-yield strength low-alloy steel
Before straight, including：
Judge whether the accumulative fluctuation number of the thickness of the high-yield strength low-alloy steel is less than or equal to 2 times；
Judge whether the fluctuation range of the thickness of the high-yield strength low-alloy steel is less than or equal to 3.5mm；
If the accumulative fluctuation number 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 for taking the thickness of strength low alloy steel is less than or equal to 3.5mm, then it is strong to the high yield to start the aligning model
Degree low-alloy steel is aligned.
Preferably, the actual straightening power based on the aligning model rectifys 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 whether the second steel plate thickness of the high-yield strength low-alloy steel is 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 following formula：
h1=17.6-0.08h2 2, wherein：h1- aligning drafts, mm；h2- the first steel plate thickness, mm.
One or more technical solution through the invention, the invention has the advantages that advantage：
The invention discloses a kind of automatic flattening methods of high-yield strength low-alloy steel, first determine 450-600MPa's
Then the yield strength and steel plate thickness of high-yield strength low-alloy steel obtain yield strength and steel plate thickness input aligning model
Actual straightening power is obtained to align high-yield strength low-alloy steel.Since the present invention is that high-yield strength low-alloy steel is utilized
Yield strength and steel plate thickness calculate actual straightening power as the input parameter aligning model that is independently arranged of input, so energy
Automatic flattening targetedly is carried out to high-yield strength low-alloy steel, and good strip shape quality can be reached after aligning.
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 implementation mode
In order to make the application the technical staff in the technical field be 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 methods of high-yield strength low-alloy steel, by analyzing specific process parameter
Relationship between practical 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, in conjunction with automatic measuring thickness optimisation technique before rectifying, puts into onsite application and work well.
The method achieve current cut deal Hi-Stren steel straightening process efficiently and the production of safety automation, to thick in raising
The quality of production of plate is of great significance.
It is a kind of specific reality of the automatic flattening method of high-yield strength low-alloy steel of the present invention referring now to Fig. 1
Apply process.
Step 11, the high-yield strength low-alloy steel is transported to temperature measurer and carries out thermometric, it is strong to obtain the high yield
Low-alloy steel is spent in the temperature after controlling cold technique.
In specific implementation process, high-yield strength low-alloy steel, can be automatically into control after by rolling mill practice
Cold technique cools down.
After controlling cold technique and finishing, can temperature detection 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 for controlling cold technique setting, 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 full-automatic step cooling bed can be utilized to run high-yield strength low-alloy steel to temperature measurer, measures and obtains
High-yield strength low-alloy steel is passing through the actual temperature after controlling cold technique.
Step 12, it is obtained in the temperature after the cold technique of control based on the high-yield strength low-alloy steel described high in the wrong
Take the yield strength of strength low alloy steel.
In specific implementation process, when determining the yield strength of high-yield strength low-alloy steel, the height is first obtained
Yield strength low-alloy steel passes through the temperature after rolling mill practice.It is based on the high-yield strength low-alloy steel again cold by controlling
It is strong to obtain the high yield by the temperature after rolling mill practice for temperature and the high-yield strength low-alloy steel after technique
Spend the yield strength of low-alloy steel.
The yield strength σ of the high-yield strength low-alloy steel is obtained by following formula：
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；
T2- high-yield strength the low-alloy steel is in the temperature after controlling cold technique.
As a kind of optional embodiment, the range 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 to calibrator and carries out thickness measuring, it is strong to obtain the high yield
Spend the first steel plate thickness of low-alloy steel；
In specific implementation process, by full-automatic step cooling bed transport high-yield strength low-alloy steel to calibrator into
Row measures.
Step 14, the first steel plate thickness based on the high-yield strength low-alloy steel and the high-yield strength low-alloy
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 following formula：
The actual straightening power of the F-aligning models, KN；
The yield strength of the σ-high-yield strength low-alloy steel, N/mm2；
B-steel plate width, mm；
The first steel plate thickness of h-, mm；
T-roll spacing mm；
β-correction factor；0.8≤β≤1.1.
As a kind of optional embodiment, aligning the range of the actual straightening power of model is：800KN≤F≤1800KN.
Step 15, the actual straightening power based on the aligning model aligns the high-yield strength low-alloy steel.
Before executing step 15, it is also necessary to judge whether high-yield strength low-alloy steel meets condition, if satisfied, then may be used
It is aligned with automatic startup aligning model.
Specific implementation process is as follows：
Judge whether the accumulative fluctuation number of the thickness of the high-yield strength low-alloy steel is less than or equal to 2 times；
Judge whether the fluctuation range of the thickness of the high-yield strength low-alloy steel is less than or equal to 3.5mm；
If the accumulative fluctuation number 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 for taking the thickness of strength low alloy steel is less than or equal to 3.5mm, then it is strong to the high yield to start the aligning model
Degree low-alloy steel is aligned.
It is then the automatic flattening mode of the high-yield strength low-alloy steel of the present invention above, first measures and obtain high-yield strength
Then the yield strength and steel plate thickness of low-alloy steel obtain actual straightening power to high-yield strength low-alloy using aligning model
Steel is aligned, so can be directed to the low-alloy steel that yield strength is 450-600MPa carries out automatic flattening, and is being aligned
After can reach good strip shape quality.
As a kind of optional embodiment, aligning model of the invention has the second program.When the reality using aligning model
After border straightening force aligns 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 whether the second steel plate thickness of the high-yield strength low-alloy steel is 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 following formula：
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.
One or more embodiment through the invention, the invention has the advantages that advantage：
The invention discloses a kind of automatic flattening methods of high-yield strength low-alloy steel, first determine 450-600MPa's
Then the yield strength and steel plate thickness of high-yield strength low-alloy steel obtain yield strength and steel plate thickness input aligning model
Actual straightening power is obtained to align high-yield strength low-alloy steel.Since the present invention is that high-yield strength low-alloy steel is utilized
Yield strength and steel plate thickness calculate actual straightening power as the input parameter aligning model that is independently arranged of input, so energy
Automatic flattening targetedly is carried out to high-yield strength low-alloy steel, and good strip shape quality can be reached after aligning.
Although the preferred embodiment of the application has been described, one of ordinary skilled in the art once knows substantially
Creative concept, then additional changes and modifications may be made to these embodiments.It is wrapped so the following claims are intended to be interpreted as
It includes preferred embodiment and falls into all change and modification of the application range.
Obviously, those skilled in the art can carry out the application essence of the various modification and variations without departing from the application
God and range.In this way, if these modifications and variations of the application belong to the range of the application claim and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (8)
1. a kind of automatic flattening method of high-yield strength low-alloy steel, which is characterized in that including：
The high-yield strength low-alloy steel is transported to temperature measurer and carries out thermometric, the high-yield strength low-alloy steel is obtained and exists
By the temperature after the cold technique of control；
Based on the high-yield strength low-alloy steel in the low conjunction of the temperature acquisition high-yield strength after controlling cold technique
The yield strength of Jin Gang；
The high-yield strength low-alloy steel is transported to calibrator and 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 following formula：
Wherein, the actual straightening power of the F-aligning models, KN；σ-high-yield strength the low-alloy
The yield strength of steel, 450MPa≤σ≤600MPa, N/mm2；B-steel plate width, mm；The first steel plate thickness of h-, mm；T-roller
Away from mm；β-correction factor；
Actual straightening power based on the aligning model aligns the high-yield strength low-alloy steel.
2. the method as described in claim 1, which is characterized in that described to pass through control based on the high-yield strength low-alloy steel
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；
Through temperature and the high-yield strength low-alloy after control cold technique based on the high-yield strength low-alloy steel
Steel passes through the temperature after rolling mill practice, obtains the yield strength of the high-yield strength low-alloy steel.
3. method as claimed in claim 2, which is characterized in that the yield strength σ of the high-yield strength low-alloy steel by with
Lower formula obtains：
σ=425.34+0.22T1-0.13T2, wherein T1- high-yield strength the low-alloy steel is by after rolling mill practice
Temperature；T2- high-yield strength the low-alloy steel is in the temperature after controlling cold technique.
4. the method as described in claim 1, which is characterized in that 800KN≤F≤1800KN.
5. the method as described in claim 1, which is characterized in that 0.8≤β≤1.1.
6. the method as described in claim 1, which is characterized 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 whether the accumulative fluctuation number of the thickness of the high-yield strength low-alloy steel is less than or equal to 2 times；
Judge whether the fluctuation range of the thickness of the high-yield strength low-alloy steel is less than or equal to 3.5mm；
If the accumulative fluctuation number 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 it is low to the high-yield strength to start the aligning model
Steel alloy is aligned.
7. the method as described in claim 1, which is characterized 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 whether the second steel plate thickness of the high-yield strength low-alloy steel is 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. the method for claim 7, which is characterized 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 following formula：
h1=17.6-0.08h2 2, wherein：h1- aligning drafts, mm；h2- the first steel plate thickness, mm.
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| SU1492554A1 (en) * | 1987-11-03 | 1991-04-23 | Украинский научно-исследовательский институт металлов | Method of producing bent rolled shapes |
| JPH08120348A (en) * | 1994-10-21 | 1996-05-14 | Nkk Corp | Production of steel sheet for hard can small in plane anisotropy |
| JPH10216867A (en) * | 1997-02-06 | 1998-08-18 | Amada Co Ltd | Metal sheet work pressing balance type pinch roller |
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| CN101927278B (en) * | 2010-06-03 | 2012-11-07 | 天津商业大学 | Method for realizing precision straightening of thin-wall seamless steel tubes by adopting six-roller straightener |
| CN102455662B (en) * | 2010-10-26 | 2013-09-25 | 宝山钢铁股份有限公司 | Optimized setting method and system for straightening parameters of hot rolled strip straightener |
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| CN104368634B (en) * | 2014-10-21 | 2016-04-27 | 南京钢铁股份有限公司 | A kind of method utilizing limit roller to expand straightener straightening capacity |
| CN104668313B (en) * | 2015-01-30 | 2017-01-18 | 燕山大学 | Roller gap adjustment method of seven-roller thick plate straightener |
| CN106270001B (en) * | 2016-08-30 | 2018-07-24 | 中冶南方工程技术有限公司 | A kind of acquisition methods and device of upper row's roller drafts of roll-type stretch bending-straightening machine |
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