CN105806302B - The experimental method of inside steel billet metal strain in a kind of test operation of rolling - Google Patents
The experimental method of inside steel billet metal strain in a kind of test operation of rolling Download PDFInfo
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- CN105806302B CN105806302B CN201610180333.6A CN201610180333A CN105806302B CN 105806302 B CN105806302 B CN 105806302B CN 201610180333 A CN201610180333 A CN 201610180333A CN 105806302 B CN105806302 B CN 105806302B
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- steel billet
- prefabricated
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- rolling
- experiment steel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The experimental method of inside steel billet metal strain in a kind of test operation of rolling, belongs to Material Physics experimental method technical field.It is included in two female prefabricated screws of tool of manufacture on experiment steel billet, prefabricated screw is positioned at experiment steel billet upper surface center line and up/down perforation, prefabricated bolt is fixed with prefabricated screw, the material that prefabricated bolt 2 uses is identical with experiment steel billet 1, experiment steel billet 1 is heated to predetermined experimental temperature, 500 DEG C~1300 DEG C of experimental temperature, the rolling deformation of at least 1 passage is carried out on experiment hot-rolling mill, test the deflection E1=L1 L of 5% of total deformation not less than the original thickness of experiment steel billet of steel billet thickness direction, hot rolling experiment steel billet central core and coating metal；E2=L2 L.Advantage is, effectively increases the accuracy of experiment.
Description
Technical field
The invention belongs to Material Physics experimental method technical field, inside steel billet in more particularly to a kind of test operation of rolling
The experimental method of metal strain.
Background technology
In hot-rolled steel plate production process, compress steel billet thickness direction by multiple rolling passes, length and width side
To extension, specific thicknesses and width, the steel plate with specific mechanical properties are produced.The change of inside steel billet metal in the operation of rolling
Shape amount directly affects the tissue and mechanical performance of finished steel plate.The deflection of inside steel billet metal in the well-known research operation of rolling
Experimental method be：In steel billet side, manufacture is uniformly distributed deep hole, as the mark of inside steel billet metal sites, in billet rolling
After the completion of deformation, the relative position between the mark of each position is measured, inside steel billet gold in the specific operation of rolling is calculated with this
The deflection of category.This experimental method manufactures deep hole in steel billet side, the metal continuity of inside steel billet is destroyed, in steel billet
Portion forms cavity, and the deformation of the metal in the operation of rolling near index aperture is influenceed by cavity, and deformation state changes, and leads
Cause experimental result accuracy low.
The content of the invention
Present invention aims at a kind of experimental method for testing inside steel billet metal strain in the operation of rolling is provided, solve
The problem of traditional means of experiment experimental result accuracy is low.
The experimental method of inside steel billet metal strain in a kind of test operation of rolling, including experiment steel billet 1, prefabricated bolt
2nd, prefabricated screw 3.Prefabricated screw 3 is located at the experiment upper surface center line of steel billet 1 and up/down perforation, prefabricated bolt 2 and prefabricated screw 3
It is fixed.
The experimental method of inside steel billet metal strain, specific steps and parameter are as follows in a kind of test operation of rolling：
1st, two female prefabricated screws 3 of tool of manufacture on experiment steel billet 1, prefabricated screw 3 is perpendicular to experiment steel billet 1
Upper surface and thickness direction insertion experiment steel billet 1 along experiment steel billet 1 upper and lower surface, the prefabricated diameter of screw 3 is no more than real
/ 10th of the thickness of steel billet 1 are tested, two prefabricated screws 3 are arranged on the center line A-A of experiment steel billet 1 upper surface, two
1.5 times of the distance between prefabricated screw 3 L not less than the thickness of experiment steel billet 1.
2nd, two prefabricated bolts 2 are prepared, the material that prefabricated bolt 2 uses is identical with experiment steel billet 1, the prefabricated diameter of bolt 2
It is corresponding with prefabricated screw 3 on experiment steel billet 1.Prefabricated bolt 2 is assembled in the prefabricated screw 3 of experiment steel billet 1.
3rd, experiment steel billet 1 is heated to predetermined experimental temperature, 500 DEG C~1300 DEG C of experimental temperature, in experiment hot-rolling mill
The upper rolling deformation for carrying out at least 1 passage, the total deformation of experiment steel billet thickness direction is not less than the original thickness for testing steel billet
5%.
4th, after carrying out rolling deformation to experiment steel billet 1, in rolling deformation direction of the prefabricated position of screw 3 along experiment steel billet 1
Plane is opened, and the distance between two prefabricated bolts 2 L1 and L2 is measured respectively along the mid-depth layer and top layer of experiment steel billet 1.
5th, the central core of hot rolling experiment steel billet 1 and the deflection E1 and E2 of coating metal is calculated as follows：E1=L1-L；E2
=L2-L.
The advantage of the invention is that：Using with test the prefabricated bolt of billet material identical, as experiment inside steel billet gold
The position mark of category, overcome traditional means of experiment and manufacture deep hole in steel billet side, destroy the metal continuity of inside steel billet,
The problem of causing experimental result accuracy low.
Brief description of the drawings
Fig. 1 is the assembling schematic diagram of the experiment prefabricated screw of steel billet and prefabricated bolt.Wherein, test steel billet 1, prefabricated bolt 2,
Prefabricated screw 3.
Fig. 2 is the partial schematic diagram of longitudinal profile after experiment billet rolling deformation.
Embodiment
Embodiment 1
The present embodiment tests steel billet central core and table to measure after Q235 steel billets carry out 2 rolling pass deformations at 1200 DEG C
Exemplified by the experiment of the extension deflection of layer metal, illustrate a kind of experiment side for testing inside steel billet metal strain in the operation of rolling
Method and specific implementation step, the experiment of the present embodiment are entered in the reversible hot-rolling experimental machine of Shoudu Iron and Steel Co Institute for Research and Technology pilot plant
OK.
1st, referring to Fig. 1, using the steel billet processing and manufacturing that the trade mark is Q235 there is prefabricated screw 3 to test steel billet 1.Test steel billet
1 thickness 80mm, width 150mm, length 360mm, experiment the width of steel billet 1 center line on make two perpendicular to upper surface,
Have female prefabricated screw 3, the prefabricated diameter 6mm of screw 3, the upper and lower surface of insertion experiment steel billet 1, two prefabricated screws 3
The distance between L=150mm.
2nd, will be prefabricated using the prefabricated bolt 2 with experiment 1 identical material manufacture of steel billet, two diameter 6mm, length 80mm
Bolt 2 is assemblied in the prefabricated screw 3 of experiment steel billet 1.
3rd, experiment steel billet 1 is heated to predetermined 1200 DEG C, carries out coming and going rolling for 2 passages in reversible hot-rolling experimental machine
System deformation, the reduction ratio of 2 rolling passes is respectively 20% and 25%.The thickness that steel billet 1 is tested after rolling deformation is 48mm.
4th, the experiment steel billet 1 after rolling deformation is opened along center line plane, referring to Fig. 2, the thickness of steel billet 1 is tested after measurement deformation
The distance between the prefabricated bolt 2 in central core position two L1, steel billet 1 surface location, two prefabricated bolts 2 are tested after measurement deformation
The distance between L2.
5th, calculate respectively after implementing the foregoing rolling deformation for coming and going 2 passages, test the central core metal of steel billet 1 and top layer gold
Extension the deflection E1 and E2 of category：E1=L1-L, E2=L2-L.
Claims (3)
1. a kind of experimental method for testing inside steel billet metal strain in the operation of rolling, it is characterised in that specific steps and ginseng
Number is as follows：
1) two female prefabricated screws (3) of tool of manufacture on experiment steel billet (1), prefabricated screw (3) is perpendicular to experiment steel
The upper surface of base (1) and the upper and lower surface that steel billet (1) is tested along the thickness direction insertion for testing steel billet (1), two prefabricated screws
(3) it is arranged on the center line A-A of experiment steel billet (1) upper surface；
2) two prefabricated bolts (2) are prepared, the material that prefabricated bolt (2) uses is identical with experiment steel billet (1), prefabricated bolt (2)
Diameter is corresponding with prefabricated screw (3) on experiment steel billet (1)；Prefabricated bolt (2) is assemblied in the prefabricated screw of experiment steel billet (1)
(3) in；
3) experiment steel billet (1) is heated to predetermined experimental temperature, the rolling that at least 1 passage is carried out on experiment hot-rolling mill becomes
Shape, 5% of total deformation not less than the original thickness of experiment steel billet (1) of experiment steel billet (1) thickness direction；
4) after carrying out rolling deformation to experiment steel billet (1), in rolling deformation side of prefabricated screw (3) position along experiment steel billet (1)
Opened to plane, along experiment steel billet (1) mid-depth layer and top layer measure respectively the distance between two prefabricated bolts (2) L1 and
L2；
5) central core of hot rolling experiment steel billet (1) and the deflection E1 and E2 of coating metal is calculated as follows：E1=L1-L；E2=
L2-L, L are the distance between two prefabricated screws (3).
2. experimental method according to claim 1, it is characterised in that prefabricated screw (3) diameter is not in described step 1)
More than 1/10th of experiment steel billet (1) thickness, thickness of the distance between two prefabricated screws (3) L not less than experiment steel billet (1)
1.5 times of degree.
3. experimental method according to claim 1, it is characterised in that predetermined experimental temperature is in described step 3)
500 DEG C~1300 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610180333.6A CN105806302B (en) | 2016-03-25 | 2016-03-25 | The experimental method of inside steel billet metal strain in a kind of test operation of rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610180333.6A CN105806302B (en) | 2016-03-25 | 2016-03-25 | The experimental method of inside steel billet metal strain in a kind of test operation of rolling |
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| Publication Number | Publication Date |
|---|---|
| CN105806302A CN105806302A (en) | 2016-07-27 |
| CN105806302B true CN105806302B (en) | 2018-03-30 |
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| CN201610180333.6A Active CN105806302B (en) | 2016-03-25 | 2016-03-25 | The experimental method of inside steel billet metal strain in a kind of test operation of rolling |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106862285B (en) * | 2017-03-07 | 2018-08-03 | 江苏省沙钢钢铁研究院有限公司 | Method for quantitatively measuring rolling deformation rate of thick plate core |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060054142A (en) * | 2004-11-15 | 2006-05-22 | 스미토모 고무 고교 가부시키가이샤 | Method of simulating deformation of rubber material |
| CN102397875A (en) * | 2010-09-16 | 2012-04-04 | 鞍钢股份有限公司 | Production method of longitudinal variable-thickness steel plate |
| CN102649123A (en) * | 2011-02-25 | 2012-08-29 | 宝山钢铁股份有限公司 | Method for producing extra thick composite board through dissymmetrical composite rolling |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3669887B2 (en) * | 1999-11-29 | 2005-07-13 | トヨタ自動車株式会社 | Thermal deformation analysis method |
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2016
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060054142A (en) * | 2004-11-15 | 2006-05-22 | 스미토모 고무 고교 가부시키가이샤 | Method of simulating deformation of rubber material |
| CN102397875A (en) * | 2010-09-16 | 2012-04-04 | 鞍钢股份有限公司 | Production method of longitudinal variable-thickness steel plate |
| CN102649123A (en) * | 2011-02-25 | 2012-08-29 | 宝山钢铁股份有限公司 | Method for producing extra thick composite board through dissymmetrical composite rolling |
Non-Patent Citations (1)
| Title |
|---|
| 钢在塑性变形加工阶段所呈现的物理性能分析;魏凯等;《河南科技》;20150430(第4期);第46-48页 * |
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| CN105806302A (en) | 2016-07-27 |
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Address after: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Patentee after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Patentee before: Capital Iron & Steel General Company |