CN110044708A - A kind of material rolling experimental method - Google Patents
A kind of material rolling experimental method Download PDFInfo
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- CN110044708A CN110044708A CN201910459858.7A CN201910459858A CN110044708A CN 110044708 A CN110044708 A CN 110044708A CN 201910459858 A CN201910459858 A CN 201910459858A CN 110044708 A CN110044708 A CN 110044708A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- Life Sciences & Earth Sciences (AREA)
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- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of materials to roll experimental method, and this material rolling experimental method is related to carrying out deformation process to material surface to improve the research of material surface stress distribution.In order to solve the problems, such as the existing indirect using finite element method analysis plastic zone, the present invention stitches and fastens one piece of imitation whole sample with two rectangle samples, it is against two rectangle samples tightly together with sufficiently large power, this pushes against the case where two samples during confirmation of trying hard to keep is tested support instantaneous opening or the changing of the relative positions that joint close gap is not in any, then, rolling deformation process is carried out to the assembly of two samples and causes annular indentation, it then removes abutting power and separates sample, at this moment, the plastic zone bounced just is able to observe that in former profound plane.
Description
Technical field
The present invention relates to a kind of materials to roll experimental method.This material rolling experimental method is related to carrying out material surface
Deformation process is to improve the research of material surface stress distribution.
Background technique
Rolling and processing is to make its superficial layer that part occur micro- by high rigidity and smooth roller and metal surface rolling contact
Obtain improving one kind of the plastic processing method of surface roughness after the plastic deformation of amount.
Metal works are after surface rolling processing, and strengthened ultimate strength and yield point increase on surface layer, the use of workpiece
Performance, fatigue resistance, wearability and corrosion resistance are all significantly improved.After rolling, hardness can be improved 15~30%,
And wearability improves 15%.
The treatment process can only handle plane and cylindrical surface, then helpless for complex-shaped part.
It but is not yet entirely that people are grasped for the stress state of material after rolling.
The present inventor describes one kind in " a kind of material rolling experimental method " (201710803714.X) with two and half
After rounded material pushes against, a cylindrical assembly is formed, impression is caused in the rolling of cylindrical assembly external cylindrical surface, separately tries
The method for rolling deformation using the information research material for bouncing area in profound plane after sample.
Summary of the invention
Although 201710803714.X has obtained intuitive and image rolling plastic zone range and shape information, but can not grind
Study carefully the deformation side in the direction of material plasticity rheology and amount of plastic deformation and plastic zone external elastic deformation area within the scope of plastic zone
To etc..
Solution provided by the invention is to mark in advance on the basis of 201710803714.X in the deformation area of sample
Know, stitches and fastens one piece of imitation whole sample with two semicircle samples, caused in the rolling of cylindrical assembly external cylindrical surface
Impression then removes abutting power and separates sample, and comparison plastic zone generates the variation of front and back home position and shape, can study modeling
The deformation direction in the direction of material plasticity rheology and amount of plastic deformation and plastic zone external elastic deformation area within the scope of property area.
Specific practice is as follows:
Two semi-cylindrical samples are made in detected materials first, the profound planar accurate grinding of each semi-cylindrical sample is added
Work influences the subsequent sight to setting-out to reach as high as possible flatness and finish in order to avoid refining the grinding trace left
It surveys, the direction of profound planar accurate grinding feed and the direction of each setting-out are in maximum angle, and are drawn lines in profound plane.
Drawing lines is one group of parallel lines for being parallel to specimen length direction.
It draws lines as one group of parallel lines perpendicular to specimen length direction.
It draws lines and is while drawing one group of parallel lines for being parallel to specimen length direction and perpendicular to specimen length direction
One group of parallel lines, this two groups of parallel lines form multiple intersection points.
In order to which rule is preferably presented, one group of parallel lines for being parallel to specimen length direction are equidistant line, perpendicular to examination
One group of parallel lines of sample length direction are equidistant line.
Secondly, the profound plane two samples is opposite and compresses, a cylindrical group is joined into screw and positioning pin
It is fit.
Turn round cylindrical assembly around own axes, pressure roller is loaded according to scheduled load, obtains rolling deformation impression.
It removes and pushes against power and separate sample, bring is parallel to examination due to rolling deformation for appearance in the profound plane that original pushes against
One group of parallel lines of sample length direction and perpendicular to specimen length direction one group of parallel lines bending and this two groups of parallel lines
The variation of multiple intersection positions helps us to obtain the direction of material plasticity rheology within the scope of plastic zone the research of these variations
With the information such as the deformation direction in amount of plastic deformation and plastic zone external elastic deformation area.
Detailed description of the invention
Fig. 1 is that a kind of material rolls experimental method implementation process diagrammatic cross-section: 1 is pressure roller；2 be batten；3 be sample group
Fit gyratory directions.
Fig. 2 is the sample assembly diagrammatic cross-section after rolling: 4 be positioning pin；5 be screw.
Fig. 3 is the profound plane setting-out schematic diagram of semi-cylindrical sample: 6 be the setting-out crossover point array in profound plane.
Specific embodiment
The following are one embodiment of the present of invention, more embodiments can be in conjunction with the one or more features of the present embodiment
It obtains.
It draws lines in the profound plane of batten 2, drawing lines is one group of parallel lines for being parallel to sample assembly axial direction.
It draws lines, is drawn lines as one group of parallel lines perpendicular to sample assembly axial direction in the profound plane of batten 2.
Draw lines in the profound plane of batten 2, draw lines for and meanwhile draw be parallel to one group of sample assembly axial direction it is parallel
Line and one group of parallel lines perpendicular to sample assembly axial direction, this two groups of parallel lines form multiple intersection points.
In order to which rule is preferably presented, one group of parallel lines for being parallel to sample assembly axial direction are equidistant line, perpendicular to
One group of parallel lines of sample assembly axial direction are equidistant line.
The machining direction of profound planar accurate grinding and the axial direction angle at 45 ° of sample assembly.
After setting-out, two pieces of battens 2 form sample assembly, positioning pin 4 and the positioning of 5 bring of screw and fastening effect guarantees
There is a situation where open and the changing of the relative positions, the axis of pressure roller 1 are combined with sample for contact surface in experimentation between two pieces of battens 2
Body axis is parallel and forces tight sample assembly with setting, at this point, sample assembly is rotated along direction of rotation 3, sample group
Annular indentation is obtained on zoarium.
Hold-down bolt 5 is screwed out, sample assembly is opened, setting-out crossover point array 6 can be observed in the profound plane of batten 2
Variation.Research to the variation of setting-out crossover point array 6, can obtain the direction of material plasticity rheology and plasticity within the scope of plastic zone
The information such as the deformation direction in deflection and plastic zone external elastic deformation area.
Claims (9)
1. a kind of material rolling experimental method is it is characterized in that: stitch and fasten one piece of imitation whole examination with two rectangle samples
Sample, when experiment, are against two strip samples tightly with sufficiently large power to be formed together an assembly, this assembly shape
In revolving body, rolling deformation process is carried out using assembly of the pressure roller to turn state and causes impression, then removes abutting power
Separate sample, at this moment, be just able to observe that the plastic zone bounced in former profound plane, band sample (it is arranged in parallel, to position
(4) positioning is sold, is connected and is fastened with screw (5), forms sample assembly, it is parallel that the axis of pressure roller (1) with sample combines body axis
And tight sample assembly is forced with setting, at this point, sample assembly is rotated along direction of rotation (3), on sample assembly
To annular indentation, sample assembly is opened, a side of band sample (2) is able to observe that the modeling for pushing against and bouncing after power is removed
Property area trace.
2. a kind of material rolling experimental method according to claim 1 is it is characterized in that: positioning pin (5) and screw (6) bring
Positioning and fastening effect ensure that there is a situation where opening and the changing of the relative positions for the contact surface between band sample in experimentation (2).
3. a kind of material rolling experimental method according to claim 1 in the profound plane of batten 2 it is characterized in that: draw lines, institute
Setting-out is one group of parallel lines for being parallel to sample assembly axial direction.
4. a kind of material rolling experimental method according to claim 1 in the profound plane of batten 2 it is characterized in that: draw lines, institute
Setting-out is one group of parallel lines perpendicular to sample assembly axial direction.
5. a kind of material rolling experimental method according to claim 1 in the profound plane of batten 2 it is characterized in that: draw lines, institute
Setting-out is draws one group of parallel lines for being parallel to sample assembly axial direction simultaneously and puts down perpendicular to one group of sample assembly axial direction
Line, this two groups of parallel lines form multiple intersection points.
6. a kind of material rolling experimental method according to claim 1 is it is characterized in that: be parallel to the one of sample assembly axial direction
Group parallel lines are equidistant line, and one group of parallel lines perpendicular to sample assembly axial direction are equidistant line.
7. a kind of material rolling experimental method according to claim 1 is it is characterized in that: grind setting-out crossover point array (6) variation
Study carefully, the direction of material plasticity rheology and amount of plastic deformation and plastic zone external elastic deformation area within the scope of plastic zone can be obtained
The information such as deformation direction.
8. a kind of material rolling experimental method according to claim 1 it is characterized in that: fine grinding machining direction with right sample block
(2) length direction angle at 45 °.
9. a kind of material rolling experimental method according to claim 1 it is characterized in that: pressure roller (1) axis and sample assembly
Axis is parallel and forces tight sample assembly with setting, at this point, sample assembly is rotated along direction of rotation (3), sample group
Annular indentation is obtained on zoarium, opens sample assembly, and band sample (2) abutting face is able to observe that push against after power is removed and bounce
Plastic zone trace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910459858.7A CN110044708A (en) | 2019-05-29 | 2019-05-29 | A kind of material rolling experimental method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910459858.7A CN110044708A (en) | 2019-05-29 | 2019-05-29 | A kind of material rolling experimental method |
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| Publication Number | Publication Date |
|---|---|
| CN110044708A true CN110044708A (en) | 2019-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910459858.7A Pending CN110044708A (en) | 2019-05-29 | 2019-05-29 | A kind of material rolling experimental method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3661655A (en) * | 1970-11-17 | 1972-05-09 | North American Rockwell | Metallic articles and the manufacture thereof |
| CN107186007A (en) * | 2017-05-12 | 2017-09-22 | 中信重工机械股份有限公司 | A kind of bearing calibration under the cold conditions of large-size cylinder body class part heat treatment ovalizing deflection |
| CN107727566A (en) * | 2017-09-08 | 2018-02-23 | 吉林大学 | A kind of material rolls experimental method |
| CN107764669A (en) * | 2017-09-08 | 2018-03-06 | 吉林大学 | A kind of material deformation experimental method |
| CN108801772A (en) * | 2018-03-30 | 2018-11-13 | 鞍钢股份有限公司 | A kind of strain sheet positioning method for high-speed stretch load test |
-
2019
- 2019-05-29 CN CN201910459858.7A patent/CN110044708A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3661655A (en) * | 1970-11-17 | 1972-05-09 | North American Rockwell | Metallic articles and the manufacture thereof |
| CN107186007A (en) * | 2017-05-12 | 2017-09-22 | 中信重工机械股份有限公司 | A kind of bearing calibration under the cold conditions of large-size cylinder body class part heat treatment ovalizing deflection |
| CN107727566A (en) * | 2017-09-08 | 2018-02-23 | 吉林大学 | A kind of material rolls experimental method |
| CN107764669A (en) * | 2017-09-08 | 2018-03-06 | 吉林大学 | A kind of material deformation experimental method |
| CN108801772A (en) * | 2018-03-30 | 2018-11-13 | 鞍钢股份有限公司 | A kind of strain sheet positioning method for high-speed stretch load test |
Non-Patent Citations (3)
| Title |
|---|
| 何性顺: ""爆炸冲击载荷下效应靶形变测量技术研究"", 《测绘通报》 * |
| 王静宜: ""喷丸、爆炸和滚压强化与高锰钢的弯曲疲劳强度"", 《西安工业学院学报》 * |
| 陈亮山: "《第一届中国联邦德国焊接学术会议论文集焊接技术的新发展及应用》", 31 December 1987 * |
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Application publication date: 20190723 |