CN103913376B - A kind of steel plate Bao Xingge effect coefficient measurement experimental provision - Google Patents
A kind of steel plate Bao Xingge effect coefficient measurement experimental provision Download PDFInfo
- Publication number
- CN103913376B CN103913376B CN201410020512.4A CN201410020512A CN103913376B CN 103913376 B CN103913376 B CN 103913376B CN 201410020512 A CN201410020512 A CN 201410020512A CN 103913376 B CN103913376 B CN 103913376B
- Authority
- CN
- China
- Prior art keywords
- sample
- briquetting
- xingge
- main body
- bao
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The present invention relates to a kind of steel plate Bao Xingge effect coefficient measurement experimental provision, belong to material properties test technical field.The mean value testing the ratio of the compression yield strength of the drawing materials tensile yield strength corresponding with it is the Bao Xingge effect coefficient of material.In the measurement of compression yield strength, when using common sample clamping device, test specimen can produce too early unstability when compressing and bend, and metal collet directly compresses the impact that sample side can produce the factors such as friction.For above problem, the present invention devises a kind of experimental provision of novel Bao Xingge effect coefficient test.Wherein, clamped after plastic side pad is sticked in sample 10 both sides by taper briquetting 6 from two sides, when effectively can limit sample pressurized, unstability bends, and plastic side pad has good lubricity simultaneously, can significantly reduce friction on the impact of sample compression deformation; Conical ring 7 and taper briquetting 6 clamp sample by the conical surface, reliable clamping; Briquetting 1 top and bottom have the good depth of parallelism and itself and main body cylinder 2 and have very high guiding accuracy, can guarantee that sample is axially compressed.The present invention improves the accuracy that compression yield strength is measured.
Description
Technical field:
The present invention relates to a kind of steel plate Bao Xingge effect coefficient measurement experimental provision, belong to material properties test technical field.
Background technology:
Bao Xingge effect is the intrinsic a kind of characteristic of metal, and it shows as the phenomenon reduced with loading direction different materials yield stress.Such as, a tensile yield strength values can be obtained during stretching corrosion resistant plate, and then compression in the other direction, a compression yield strength can be obtained, but this compression yield strength can be less than tensile yield strength, this phenomenon is called Bao Xingge effect, usually the ratio of the yield strength after compression and tensile yield strength is called Bao Xingge effect coefficient.
Affecting larger by Bao Xingge effect coefficient is the stretch wrap forming technology of sheet material or section bar.Stretch wrap forming technology is widely used in the parts that the fields such as rail vehicle, engineering machinery, warship boats and ships, Aero-Space manufacture long radius, Bao Xingge effect coefficient can improve the numerical simulation calculation precision of these parts stretch wrap forming techniques greatly accurately, most important to the determination of the simulative optimization of stretch bending process, forming defects analysis and control, optimal processing parameter.
The process of the test that Bao Xingge effect coefficient is measured is as follows: first stretch (as extensibility is respectively 5% according to different extensibility in plastic deformation area to the tensile sample of some (as 10) in Material Testing Machine, 7%, 9% ...), obtain corresponding tensile yield strength values, then sample middle part is after the stretch according to the size cutting sampling (the general desirable length and width of sample are of a size of 35mm × 10mm) of setting, the sample taken off with after special gripping means grips, Material Testing Machine is compressed, until material yield obtains compression yield strength value.The mean value getting the ratio of the compression yield strength tensile yield strength corresponding with it is the Bao Xingge effect coefficient of material.
In the measurement of compression yield strength, require that sample only axial crushing deformation occurs, flexural deformation can not be produced, when using common sample clamping device, test specimen can produce too early unstability and bend when compressing, and metal collet directly compresses the impact that sample side produces the factors such as friction, all can limit the compression deformation of sample, these all affect the accuracy that compression yield strength is measured.
For above problem, the present invention proposes a kind of steel plate Bao Xingge effect coefficient measurement experimental provision, when solving sample compression dexterously, the problems such as factor restriction sample compression deformation such as the bending and metal collet friction of too early unstability, improve the accuracy that compression yield strength is measured.
Summary of the invention:
Above-mentioned purpose of the present invention realizes by the following method, and existing accompanying drawings is as follows:
Described device is shown in accompanying drawing 1, comprises 1. briquettings; 2. main body cylinder; 3. plastic spacer; 4. side pad; 5. backing pin; 6. taper briquetting; 7. conical ring; 8. spherical support plate; 9. the major part such as jackscrew, 10 is samples to be compressed.First spherical support plate 8 is put into bottom main body cylinder 2, adjust jackscrew 9 spherical support plate 8 jack-up to suitable height, side pad 4 is attached to the both sides of sample 10, be adjacent to two pieces of taper briquettings 6 again, outside puts conical ring 7, put on the spherical support plate 8 of main body cylinder 2, and lower jackscrew 9, make the suitable position that conical ring 7 and sample 4 etc. decline, two backing pins 5 are inserted in the hole of main body cylinder 2 side, adjustment jackscrew 9, rise spherical support plate 8, backing pin 5 blocks conical ring 7, by taper briquetting 6, sample 10 is clamped, then plastic spacer 3 is sticked in briquetting 1 bottom surface, put on main body cylinder 2, briquetting 1 has just been pressed on sample 10 by plastic spacer 3, for compression test is ready, finally the main body cylinder 2 clamping sample being equipped with in inside is fixed in Material Testing Machine, pressure is applied to briquetting 1 with the seaming chuck of testing machine, the compression yield strength of sample can be measured.Described conical ring 7 inside is with the conical surface, and tapering is identical with the male cone (strobilus masculinus) of taper briquetting 6, and two cone match can be clamped sample by taper briquetting 6;
The described briquetting 1 top and bottom depth of parallelism is high, puts into the part in main body cylinder 2, and with cylinder inner face precision-fit, guiding accuracy is high;
The present invention has plurality of advantages: clamped from two sides by taper briquetting 6 after plastic side pad is sticked in sample both sides, when effectively can limit sample pressurized, unstability bends, plastic side pad has good lubricity simultaneously, can significantly reduce friction on the impact of sample compression deformation; Conical ring 7 and taper briquetting 6 clamp sample by the conical surface, reliable clamping; Briquetting 1 top and bottom have the good depth of parallelism and itself and main body cylinder 2 and have very high guiding accuracy, and pressure not deflection when can guarantee that sample compresses, sample is axially compressed.
Accompanying drawing illustrates:
Fig. 1 is device schematic cross-section
In figure: 1. briquetting; 2. main body cylinder; 3. plastic spacer; 4. side pad; 5. backing pin; 6. taper briquetting; 7. conical ring; 8. spherical support plate; 9. jackscrew; 10. compression specimens
Fig. 2-5 is device installation process figure
Embodiment:
Content of the present invention and embodiment thereof is further illustrated by reference to the accompanying drawings.
Described device is shown in accompanying drawing 1, comprises 1. briquettings; 2. main body cylinder; 3. plastic spacer; 4. side pad; 5. backing pin; 6. taper briquetting; 7. conical ring; 8. spherical support plate; 9. the major part such as jackscrew, 10 is samples to be compressed.First spherical support plate 8 is put into bottom main body cylinder 2, adjust jackscrew 9 spherical support plate 8 jack-up to suitable height, side pad 4 is attached to the both sides of sample 10, be adjacent at side pad with two pieces of taper briquettings 6 again, then conical ring 7 is enclosed within the outside of taper briquetting 6, after preliminary centering compresses sample, put on the spherical support plate 8 of main body cylinder 2 again, and lower jackscrew 9, conical ring 7 and sample 4 etc. is made to drop to the suitable position of below main body cylinder 2 sidewall circular hole, two backing pins 5 are inserted in the hole of main body cylinder 2 side, adjustment jackscrew 9 rises spherical support plate 8, backing pin 5 blocks conical ring 7, by taper briquetting 6, sample 10 is clamped, then plastic spacer 3 is sticked in briquetting 1 bottom surface, put on main body cylinder 2, briquetting 1 has just been pressed on sample 10 by plastic spacer 3, now sample is by reliable grip, for compression test is got ready.The main body cylinder 2 inside being equipped with clamping sample is fixed in Material Testing Machine, applies pressure, can measure the compression yield strength of sample with the seaming chuck of testing machine to briquetting 1.
Reliable grip when the present invention can guarantee that sample compresses, avoid too early unstability to bend, the factor such as chuck and friction that simultaneously significantly reduces, on the impact of sample compression deformation, can significantly improve the accuracy of sample compression yield strength, and then improve Bao Xingge effect coefficient measuring accuracy.
Claims (3)
1. a steel plate Bao Xingge effect coefficient measurement experimental provision, comprise briquetting (1), main body cylinder (2), plastic spacer (3), side pad (4), backing pin (5), taper briquetting (6), conical ring (7), spherical support plate (8), jackscrew (9), it is characterized in that compression sample both sides are clamped by taper briquetting (6) after sticking side pad (4), conical ring (7) is enclosed within the outside of taper briquetting, put on the spherical support plate (8) of main body cylinder (2), lowering jackscrew (9) makes conical ring and sample drop to main body cylinder side wall circular hole with upper/lower positions, two backing pins (5) are inserted in the hole of main body cylinder sides, adjustment jackscrew, rise spherical support plate, until backing pin blocks conical ring, now taper briquetting clamps sample, then plastic spacer (3) is sticked in briquetting (1) bottom surface, put into main body cylinder, briquetting is compressed by Material Testing Machine by plastic spacer.
2. a kind of steel plate Bao Xingge effect coefficient measurement experimental provision according to claim 1, is characterized in that the internal taper hole of taper briquetting (6) male cone (strobilus masculinus) and conical ring (7) has identical tapering, compresses sample with cone match.
3. a kind of steel plate Bao Xingge effect coefficient measurement experimental provision according to claim 1, is characterized in that briquetting (1) top and bottom are parallel, and cylinder partial and the drive fit of cylinder inner hole refined of inserting main body cylinder (2) are led.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410020512.4A CN103913376B (en) | 2014-01-10 | 2014-01-10 | A kind of steel plate Bao Xingge effect coefficient measurement experimental provision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410020512.4A CN103913376B (en) | 2014-01-10 | 2014-01-10 | A kind of steel plate Bao Xingge effect coefficient measurement experimental provision |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103913376A CN103913376A (en) | 2014-07-09 |
| CN103913376B true CN103913376B (en) | 2016-04-20 |
Family
ID=51039222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410020512.4A Expired - Fee Related CN103913376B (en) | 2014-01-10 | 2014-01-10 | A kind of steel plate Bao Xingge effect coefficient measurement experimental provision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103913376B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2698738C1 (en) * | 2018-11-29 | 2019-08-29 | Федеральное государственное бюджетное научное учреждение "Федеральный научный центр пищевых систем им. В.М. Горбатова" РАН | Apparatus for testing samples for uniaxial compression of materials mainly of vegetable origin |
| CN114166634A (en) * | 2021-12-14 | 2022-03-11 | 洛阳金鹭硬质合金工具有限公司 | Auxiliary device and method for detecting compressive strength of hard alloy |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85200252U (en) * | 1985-04-01 | 1987-01-14 | 南京工学院 | Tensile-compression strength tester without interference of friction force |
| CN101726445A (en) * | 2008-10-23 | 2010-06-09 | 宝山钢铁股份有限公司 | Method and test specimen for acquiring material parameters related to metal plate strain rate |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0231816B2 (en) * | 1983-04-18 | 1990-07-17 | Rikagaku Kenkyusho | ITAMENSENDANTOKUSEINOSOKUTEIHO |
| JP3897477B2 (en) * | 1999-03-25 | 2007-03-22 | トヨタ自動車株式会社 | Stress-strain relationship simulation method and springback amount prediction method |
| KR100940655B1 (en) * | 2007-12-26 | 2010-02-05 | 주식회사 포스코 | Jig for anti-buckling of specimen |
-
2014
- 2014-01-10 CN CN201410020512.4A patent/CN103913376B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85200252U (en) * | 1985-04-01 | 1987-01-14 | 南京工学院 | Tensile-compression strength tester without interference of friction force |
| CN101726445A (en) * | 2008-10-23 | 2010-06-09 | 宝山钢铁股份有限公司 | Method and test specimen for acquiring material parameters related to metal plate strain rate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103913376A (en) | 2014-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110567819B (en) | Method for testing high-temperature compressive yield strength of material | |
| CN106353181B (en) | The asymmetric clamping device and experimental method of thin plate compression | |
| CN104949884A (en) | Method for directly measuring coefficient of normal anisotropy in circumferential direction of tubular material | |
| CN103674707A (en) | System and method for measuring direct tensile strength and deformation of rock | |
| CN105300788B (en) | A kind of establishing method of drawing by high temperature speed | |
| CN105458340B (en) | A kind of localization punch for being used to measure non-magnetic metal plate residual stress | |
| CN105043861A (en) | High-low-temperature stretching rotary compression fixture for stretching test machine | |
| Tisza et al. | Springback analysis of high strength dual-phase steels | |
| CN103913376B (en) | A kind of steel plate Bao Xingge effect coefficient measurement experimental provision | |
| CN205175817U (en) | Tensile compression anchor clamps that change of high low temperature of tensile test machine | |
| CN110595889B (en) | Method for testing compressive yield strength of material | |
| CN107843484B (en) | Concrete tensile strength testing device and testing method | |
| CN105973701B (en) | Measure the yield strength of Hi-Stren steel and the method for fracture toughness simultaneously | |
| CN107677546A (en) | A kind of method of the high temperature compressed sample tensile strength of measure Gleeble | |
| CN110501216B (en) | Creep compression clamp assembly | |
| CN201780235U (en) | Thin metal board bending test device | |
| CN103528881B (en) | Method and device for quickly detecting bauschinger effect value of pipeline steel in steel plate production field | |
| CN201720288U (en) | Bar wire sample straightener | |
| CN206920262U (en) | A kind of thin plate low cycle fatigue test device | |
| CN105928784B (en) | The method for measuring fracture toughness under hot rolling carbon steel plane stress condition | |
| CN110501217B (en) | Creep compression clamp | |
| CN104297075A (en) | A metal wire torsion test method for a steel wire rope | |
| KR101655566B1 (en) | Apparatus for safety assessement of glass materials and evaluation method thereof | |
| CN105241752B (en) | A kind of Forming Limit of Sheet Metals figure test device and its method | |
| CN201811721U (en) | Stress measurement device based on light transmitting measurement technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Gu Zhengwei Inventor after: Lv Mengmeng Inventor after: Lu Guanhan Inventor after: Yu Ting Inventor after: Xu Hong Inventor after: Li Xin Inventor before: Lu Guanhan Inventor before: Yu Ting Inventor before: Gu Zhengwei Inventor before: Xu Hong Inventor before: Li Xin |
|
| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 Termination date: 20170110 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |