CN106862285A - A kind of method of quantitative measurment slab center portion rolling deformation rate - Google Patents
A kind of method of quantitative measurment slab center portion rolling deformation rate Download PDFInfo
- Publication number
- CN106862285A CN106862285A CN201710130969.4A CN201710130969A CN106862285A CN 106862285 A CN106862285 A CN 106862285A CN 201710130969 A CN201710130969 A CN 201710130969A CN 106862285 A CN106862285 A CN 106862285A
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- China
- Prior art keywords
- center portion
- rolling
- deformation rate
- blank
- longitudinal section
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
- B21B2015/0021—Cutting or shearing the product in the rolling direction
Abstract
The present invention relates to a kind of method of quantitative measurment slab center portion rolling deformation rate, the steps such as the method drills by steel plate longitudinal section various location, filling, measurement, rolling, to test and analyze the deformation of steel plate thickness direction various location in the operation of rolling, the especially deformation of center portion.The present invention uses the examination base of the shapes such as rectangle longitudinal section, slope shape longitudinal section or stepped longitudinal section, and the various locations such as longitudinal section 1/8,1/4,3/8,1/2,5/8,3/4,7/8 drilling, fill and roll, by the deformation ratio for measuring aperture before and after rolling, you can accurately determine the actual rolling deformation rate of the steel plate of different total reductions diverse location in a thickness direction.Present invention can apply to the quantitative detecting analysis of all steel plates deformation rate in the operation of rolling, method is simple, is easy to operation, and data are accurate.
Description
Technical field
The invention belongs to metal fever manufacture field, and in particular to a kind of side of quantitative measurment slab center portion rolling deformation rate
Method.
Background technology
The domestic steel plate by thickness more than 60mm is referred to as special heavy plate, is mainly used in boilers and pressure vessel, ocean engineering, core
The major technologies and equipments such as electricity, wind-powered electricity generation, military project, skyscraper, heavy-duty machinery, mould manufacture field.For special heavy plate, center portion
Quality is still crucial, and the center portion quality of special heavy plate depends primarily on the deformation in steel-making quality and the operation of rolling.
Heavy plate rolling process is typical heterogeneous deformation process, and usual rolling deformation can not be completely penetrated in slab
Portion.Slab is thicker, and surface deformation is bigger, and center portion deforms very little or do not deform.In order that obtaining deformation energy penetrates into the heart
Portion so that center portion performance is improved, generally using big pressure rolling mill practice or differential temperature rolling mill practice.And for slab thickness
Overall deformation situation on direction, it is difficult to detect, also without quantitative data.The current country has many use finite element numerical simulations to grind
Study carefully the rolling deformation situation inside analysis steel plate, but checking is supported without real data.
The content of the invention
For the problem that prior art is present, it is an object of the invention to propose that a kind of quantitative measurment slab center portion rolling becomes
The method of form quotient, by steps such as the drilling of blank longitudinal section various location, measurement, filling, rolling, measurements, quantitatively to examine
Survey the deformation of analysis steel plate thickness direction various location in the operation of rolling.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of method of quantitative measurment slab center portion rolling deformation rate, comprises the following steps：
(1) drill：The blank that vertical sectional shape is slope shape, stairstepping or rectangle is taken, the thickness direction drilling in longitudinal section,
Measurement aperture D1；
(2) fill：The pole sample of processing material same with blank, it is ensured that the size of pole is consistent with aperture, and is filled out
Fill in hole；
(3) roll：Hole will be drilled and populated blank is heated, rolled, for vertical sectional shape be slope shape or
Step-like blank, rolls a time；It is the blank of rectangle for vertical sectional shape, rolls a time or multi-pass；
(4) measure：The steel plate for having rolled carries out longitudinally cutting, and the drilling of cutting filling part carries out milling, mill, pickling, right
The aperture of the band filling sample after pickling measures, a diameter of D2.
Further, the method for described quantitative measurment slab center portion rolling deformation rate, the position of middle drilling is longitudinal section thickness
At degree direction 1/8,1/4,3/8,1/2,5/8,3/4,7/8, a diameter of 3~5.5mm in hole, depth >=30mm.
Further, the method cut deal center portion rolling deformation rate Dr=of described quantitative measurment slab center portion rolling deformation rate
(D1-D2)/D1。
Technical solution of the present invention is illustrated below：
Blank shape：Blank can be slope shape or stairstepping, can realize that one block of blank of rolling draws not using this shape
With the center portion deformation rate under the conditions of reduction ratio.Also rectangular billet can be used, multi-pass is rolled, blank center portion is obtained and is become in multi-pass
Accumulative deformation rate during shape.
Drilling and filling：Drilling and filling are in order to can be by the pole sample ruler cun variant filled by rolling deformation rate
Reveal and.During drilling, should be perpendicular to steel plate longitudinal section toward blank internal bore, aperture depth >=30mm and more deep better, with
Reduce the influence that edge is brought with center portion uneven deformation.During filling, pole sample material need to be consistent with blank, it is ensured that is heating and is rolling
When processed, pole sample can possess the indexs such as the consistent coefficient of expansion, ductility with blank.Pole sample ruler cun need to be consistent with aperture, keeps away
Exempt from that pole small-bore is big or the small situation in pole large aperture, the otherwise measurement to deformation after unloading rate has large effect.
Sampling cutting：Because steel plate edge deformation is variant with center portion, therefore, in sampling cutting process, hole should be close to
Bottom samples, while needing vertical surface of steel plate.
Compared with prior art, the invention has the advantages that：
The present invention in steps such as the drilling of blank longitudinal section various location, measurement, filling, rolling, measurements by quantifying
Test and analyze the deformation of steel plate thickness direction various location in the operation of rolling.Method is simple, is easy to operation, and data are accurate
Really.
Brief description of the drawings
Fig. 1 is the scala media trapezoidal billet of embodiment 1 drilling filling schematic diagram；
Fig. 2 is slope shape blank drilling filling schematic diagram in embodiment 2；
Fig. 3 is rectangular billet drilling filling schematic diagram in embodiment 3.
Specific embodiment
Technical scheme is described in further detail below in conjunction with drawings and Examples, but not limited to this.
Embodiment 1
1. take experiment blank, blank be processed into vertical sectional shape for stairstepping, step-thickness is respectively 150,165,
180th, 195mm, and drilled at the positions such as longitudinal section thickness direction 1/8,1/4,3/8,1/2,5/8,3/4,7/8, the diameter in hole
It is 3mm, depth >=30mm.
2. after being drilled hole, aperture D1 is measured.Then the pole sample of material same with blank, the size of pole and hole are processed
Footpath is basically identical, and is filled with hole.
3. hole will be drilled and populated blank is heated, rolled, using one-pass roller, finished product thickness is 145mm.
4. the steel plate that will have been rolled carries out longitudinally cutting, and drilling filling part cutting is cut off, and carries out milling, mill, pickling.
5. the aperture with filling sample after pair pickling measures, a diameter of D2.Deformation rate Dr passes through formula Dr=(D1-
D2)/D1 is calculated.
Various location deformation rate is as shown in table 1.
Embodiment 2
1. experiment blank is taken, blank is processed into vertical sectional shape for slope shape, minimum thickness is 210mm, is to the maximum
250mm, and drilled at the positions such as longitudinal section thickness direction 1/8,1/4,3/8,1/2,5/8,3/4,7/8, bore position thickness
It is 215mm, 220mm, 225mm, 230mm, 235mm, 240mm, a diameter of 3mm in hole, depth >=30mm.
2. after being drilled hole, aperture D1 is measured.Then the pole sample of material same with blank, the size of pole and hole are processed
Footpath is basically identical, and is filled with hole.
3. hole will be drilled and populated blank is heated, rolled, using one-pass roller, finished product thickness is 200mm.
4. the steel plate that will have been rolled carries out longitudinally cutting, and drilling filling part cutting is cut off, and carries out milling, mill, pickling.
5. the aperture with filling sample after pair pickling measures, a diameter of D2.Deformation rate Dr passes through formula Dr=(D1-
D2)/D1 is calculated.
Various location deformation rate is as shown in table 2.
Embodiment 3
1. continuous casting billet is taken, blank is processed into vertical sectional shape for rectangle, thickness is 160mm, in longitudinal section thickness direction
1/8th, drilled at 1/4,3/8,1/2,5/8,3/4,7/8 position, a diameter of 5.2mm in hole, depth >=30mm.
2. after being drilled hole, aperture D1 is measured.Then the pole sample of material same with blank, the size of pole and hole are processed
Footpath is basically identical, and is filled with hole.
3. hole will be drilled and populated blank is heated, rolled, using multi- pass rolling, finished product thickness is 80mm.
4. the steel plate that will have been rolled carries out longitudinally cutting, and drilling filling part cutting is cut off, and carries out milling, mill, pickling.
5. the aperture with filling sample after pair pickling measures, a diameter of D2.Deformation rate Dr passes through formula Dr=(D1-
D2)/D1 is calculated.
Various location deformation rate is as shown in table 3.
Diverse location deformation rate after the stairstepping sample one-pass roller of table 1
As it can be seen from table 1 ladder sample is after one-pass roller, drafts is bigger, and each of which position reduction ratio increases
Greatly.To different-thickness, reduction ratio is larger at 1/8, and its deformation is also larger, and center portion is minimum.
Diverse location deformation rate after the slope shape sample one-pass roller of table 2
From table 2 it can be seen that slope shape sample is after one-pass roller, drafts is bigger, and each of which position reduction ratio is equal
Increase.To different-thickness, reduction ratio is larger at 1/8, and its deformation is also larger, and center portion is minimum.
Diverse location deformation rate after the rectangular specimen multi- pass rolling of table 3
From table 3 it can be seen that after rectangular specimen is through multi- pass rolling, reduction ratio is larger at 1/8, its deformation is also larger, and
Center portion is minimum.
Although the open section Example of the present invention, is not for limiting the present invention.The present invention can also have other many
Implementation method is planted, those skilled in the art can make various corresponding changes according to the present invention, but these corresponding changes all should
Belong to the protection domain of appended claims of the present invention.Such as：Blank shape (can also be going up or down stairway shape, upper and lower slope shape
Deng), ramp slope, step number (embodiment of the present invention is 4 ladders, can also continue to increase ladder), hole number, the distribution in hole
Position etc..
Claims (3)
1. a kind of method of quantitative measurment slab center portion rolling deformation rate, it is characterised in that comprise the following steps：
(1) drill：The blank that vertical sectional shape is slope shape, stairstepping or rectangle is taken, the thickness direction drilling in longitudinal section, measurement
Aperture D1；
(2) fill：The pole sample of same with the blank material of processing, it is ensured that the size of pole is consistent with aperture, and be filled with
In hole；
(3) roll：Hole will be drilled and populated blank is heated, rolled, be slope shape or ladder for vertical sectional shape
The blank of shape, rolls a time；It is the blank of rectangle for vertical sectional shape, rolls a time or multi-pass；
(4) measure：The steel plate for having rolled carries out longitudinally cutting, and the drilling of cutting filling part carries out milling, mill, pickling, to pickling
The aperture of band filling sample afterwards measures, a diameter of D2.
2. the method for quantitative measurment slab center portion rolling deformation rate according to claim 1, it is characterised in that the position of drilling
It is set at longitudinal section thickness direction 1/8,1/4,3/8,1/2,5/8,3/4,7/8, a diameter of 3~5.5mm in hole, depth >=
30mm。
3. the method for quantitative measurment slab center portion rolling deformation rate according to claim 1, it is characterised in that described thickness
Plate center portion rolling deformation rate Dr=(D1-D2)/D1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710130969.4A CN106862285B (en) | 2017-03-07 | 2017-03-07 | A kind of method of quantitative measurment slab center portion rolling deformation rate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710130969.4A CN106862285B (en) | 2017-03-07 | 2017-03-07 | A kind of method of quantitative measurment slab center portion rolling deformation rate |
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| Publication Number | Publication Date |
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| CN106862285A true CN106862285A (en) | 2017-06-20 |
| CN106862285B CN106862285B (en) | 2018-08-03 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4407056A (en) * | 1978-04-07 | 1983-10-04 | Nippon Steel Corporation | Method and apparatus for manufacturing metal sections |
| CN1454123A (en) * | 2000-09-08 | 2003-11-05 | 摩根建设公司 | Method and apparatus for reducing and sizing hot rolled ferrous products |
| CN202180087U (en) * | 2011-06-27 | 2012-04-04 | 芜湖新兴铸管有限责任公司 | Calibration guide device for rolled steel |
| CN105806302A (en) * | 2016-03-25 | 2016-07-27 | 首钢总公司 | Experiment method for testing metal deformation quantity inside billet in rolling process |
-
2017
- 2017-03-07 CN CN201710130969.4A patent/CN106862285B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4407056A (en) * | 1978-04-07 | 1983-10-04 | Nippon Steel Corporation | Method and apparatus for manufacturing metal sections |
| CN1454123A (en) * | 2000-09-08 | 2003-11-05 | 摩根建设公司 | Method and apparatus for reducing and sizing hot rolled ferrous products |
| CN202180087U (en) * | 2011-06-27 | 2012-04-04 | 芜湖新兴铸管有限责任公司 | Calibration guide device for rolled steel |
| CN105806302A (en) * | 2016-03-25 | 2016-07-27 | 首钢总公司 | Experiment method for testing metal deformation quantity inside billet in rolling process |
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| Publication number | Publication date |
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| CN106862285B (en) | 2018-08-03 |
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