CN107132086A - A kind of preparation method of drawing by high temperature sample - Google Patents
A kind of preparation method of drawing by high temperature sample Download PDFInfo
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- CN107132086A CN107132086A CN201610113205.XA CN201610113205A CN107132086A CN 107132086 A CN107132086 A CN 107132086A CN 201610113205 A CN201610113205 A CN 201610113205A CN 107132086 A CN107132086 A CN 107132086A
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- high temperature
- section
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- temperature sample
- test
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
Abstract
By the nominal diameter D roundings for being threadedly coupled section it is closest to sample original thickness a the present invention relates to a kind of preparation method of drawing by high temperature sample, including 1)0And meet GB/T 196《Regular screw threads basic size》The numerical value of given size；2) test section original width b is determined0：If the cross-sectional area of drawing by high temperature sample holder section is S1, the cross-sectional area of test section is S0；And require S1≥1.1S0, thenb0Take closest to b0M numerical value, and the revision of the convention is to 0.5mm；3) the two ends threaded connection section of drawing by high temperature sample is first processed into cylinder, the original rectangular cross section of test section reservation at middle part is constant；4) drawing by high temperature sample two ends threaded connection section is processed into screw thread, the big footpath size of screw thread is D.The drawing by high temperature sample that the present invention makes can improve the axiality and the centering in sample thickness direction of sample and cupping machine, so that the accuracy of guarantee test result, is more convenient tension test process operation, while security is also improved in process of the test.
Description
Technical field
The complete of fixture is threadedly coupled the present invention relates to a kind of Metal Materials At High Temperature tensile sample, more particularly to a kind of used with fixture
Thickness rectangular cross section drawing by high temperature sample.
Background technology
High-temperature short delay stretching experiment mainly determine tensile strength of metal material when higher than room temperature, yield strength, elongation,
The performance indications such as the contraction percentage of area.Metal Materials At High Temperature tensile sample is generally divided into：Circular cross section threaded connection sample, square
Shape cross section band pin-and-hole tensile sample (as Figure 1-Figure 2), rectangular cross section take the lead tensile sample.For more accurate test
The high temperature tensile properties of material, when machining and the permission of testing machine ability, should prepare total cross-section or through thickness sample.
When doing high temperature tension test, to avoid the hydraulically operated fixture to cupping machine from impacting, drawing by high temperature sample is required for
It is connected by adapter, two very long connectors of pull bar up and down with the hydraulically operated fixture of cupping machine, while Tensile is tested
The space of machine is limited, and high temperature furnace can not be too big, the general of length no more than 150mm in high temperature furnace soaking zone, burner hearth internal diameter size one
As be
, it is necessary to match somebody with somebody on the cupping machine of big load when doing the larger total cross-section of thickness or through thickness high temperature tension test at present
Standby high temperature furnace.A kind of scheme is that sample is clamped directly on the hydraulically operated fixture of cupping machine, in order to avoid high temperature is to stretching
The hydraulically operated fixture of testing machine is impacted, and sample holder end will be lengthened, therefore cause sample weight to increase, to sample processing and
Inspection brings great difficulty, while also resulting in the waste of raw material.Another scheme is the Wedge gripping that will be clamped manually
It is placed in high temperature furnace, but maximum temperature is general no more than 350 DEG C, is unsatisfactory for the requirement of drawing by high temperature temperature.It is general high
- 70 DEG C during the operating temperature of temperature lubricating grease~350 DEG C, more than 350 DEG C Hmp grease failures, the fixture block of Wedge gripping can not
Slide, can not gradually increase chucking power in process of the test, so that sample skids, result of the test is invalid.And due to hand
Dynamic fixture needs manual rotating wheel to carry out applying sample pretightning force, and runner extreme temperatures are easily scalded.
The content of the invention
The invention provides a kind of preparation method of drawing by high temperature sample, the drawing by high temperature sample can improve sample and be tried with stretching
The axiality of machine and the centering in sample thickness direction are tested, so that the accuracy of guarantee test result, grasps tension test process
It is more convenient, while security is also improved in process of the test.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of preparation method of drawing by high temperature sample, the drawing by high temperature sample is that conventional rectangular cross section takes the lead drawing by high temperature
Sample transforms into the tensile sample that two ends are threaded linkage section, middle part is rectangular cross section test section, the drawing by high temperature sample
The threaded connection fixture clamping that drawing by high temperature sample can be threadedly coupled by conventional circular cross section carries out high temperature tension test；
The specific manufacturing process of drawing by high temperature sample comprises the following steps：
1) the screw thread nominal diameter D of threaded connection section is determined：Drawing by high temperature sample is taken the lead according to conventional rectangular cross section
Original thickness a0, it is closest to sample original thickness a by the nominal diameter D roundings for being threadedly coupled section0And meet GB/T 196
《Regular screw threads basic size》The numerical value of given size；
2) test section original width b is determined0：If the cross-sectional area of drawing by high temperature sample threaded connection section is S1, test section
Cross-sectional area is S0；ThenS0=a0b0D in m, formula1To be threadedly coupled the path of section screw thread, b0For height
Warm tensile sample original width, b0M is the maximum original width of drawing by high temperature sample；To ensure sample fracture position in test section,
It is required that S1≥1.1S0, thenThus Breadth Maximum b is obtained0m；b0Take closest to b0M numerical value, and
The revision of the convention is to 0.5mm；
3) two ends of drawing by high temperature sample threaded connection section is first processed into cylinder by screw thread nominal diameter D, and by cylinder
The processing of body end portion is concordant and centering, and it is constant that the test section in the middle part of drawing by high temperature sample still retains original rectangular cross section, its
Thickness is a0, width is b0；
4) on the basis of cylinder ends centre bore, drawing by high temperature sample two ends threaded connection section is processed into screw thread, screw thread
Big footpath size be D.
Compared with prior art, the beneficial effects of the invention are as follows：
1) solve when the materials such as the larger steel plate of thickness, shaped steel, steel pipe do total cross-section or through thickness high temperature tension test
Fixed clamp problem, only need to can be easily accomplished total cross-section using the circular cross section specimen holder of threaded connection or through thickness is high
Warm tension test；
2) axiality and the centering in sample thickness direction of sample and cupping machine are improved, so that it is guaranteed that result of the test
Accuracy；
3) can short form test operating process, the security of raising process of the test, so as to meet through thickness high temperature tension test
It is required that.
Brief description of the drawings
Fig. 1 is the front view that drawing by high temperature sample is taken the lead in conventional rectangular cross section of the present invention.
Fig. 2 is the top view that drawing by high temperature sample is taken the lead in conventional rectangular cross section of the present invention.
Fig. 3 is the front view of drawing by high temperature sample of the present invention.
Fig. 4 is the top view of drawing by high temperature sample of the present invention.
In figure：1. the test section 3. of gripping section 2. is threadedly coupled section
Embodiment
The embodiment to the present invention is described further below in conjunction with the accompanying drawings：
A kind of preparation method of drawing by high temperature sample, the drawing by high temperature sample is that conventional rectangular cross section takes the lead drawing by high temperature
Sample (as Figure 1-Figure 2) transforms into the drawing that two ends are threaded linkage section 3, middle part is rectangular cross section test section 2
Sample (as Figure 3-Figure 4) is stretched, the drawing by high temperature sample can be threadedly coupled drawing by high temperature examination by conventional circular cross section
The threaded connection fixture clamping of sample carries out high temperature tension test；The specific manufacturing process of drawing by high temperature sample includes following step
Suddenly：
1) the screw thread nominal diameter D of threaded connection section is determined：Drawing by high temperature sample is taken the lead according to conventional rectangular cross section
Original thickness a0, it is closest to sample original thickness a by the nominal diameter D roundings for being threadedly coupled section 30And meet GB/T
196《Regular screw threads basic size》The numerical value of given size；
2) test section original width b is determined0：If the cross-sectional area of drawing by high temperature sample threaded connection section 3 is S1, test section
2 cross-sectional area is S0；ThenS0=a0b0D in m, formula1To be threadedly coupled the path of the screw thread of section 3, b0
For drawing by high temperature sample original width, b0M is the maximum original width of drawing by high temperature sample；To ensure sample fracture position in examination
Test section 2, it is desirable to S1≥1.1S0, thenThus Breadth Maximum b is obtained0m；b0Take closest to b0M's
Numerical value, and the revision of the convention is to 0.5mm；
3) the two ends threaded connection section 3 of drawing by high temperature sample is first processed into cylinder by screw thread nominal diameter D, and will circle
Test section 2 in the middle part of the concordant simultaneously centering of cylindrical end portions processing, drawing by high temperature sample still retains original rectangular cross section not
Become, its thickness is a0, width is b0；
4) on the basis of cylinder ends centre bore, drawing by high temperature sample two ends threaded connection section 3 is processed into screw thread, spiral shell
The big footpath size of line is D.
Following examples are implemented lower premised on technical solution of the present invention, give detailed embodiment and specific
Operating process, but protection scope of the present invention is not limited to following embodiments.Method therefor such as nothing is especially said in following embodiments
Bright is conventional method.
【Embodiment】
In the present embodiment, the width of conventional rectangular cross section two ends gripping section 1 is b1, thickness is a1；Intermediate experiment section 2
Width be b0, thickness is a0。
Determine that drawing by high temperature sample is threadedly coupled the screw thread nominal dimension D of section 3：The original thickness a of sample0=16.0mm, ginseng
According to GB/T 196《Regular screw threads basic size》, it is M16mm to determine screw thread nominal dimension (big footpath) D.Add to simplify
Work, check problem, also can take identical screw thread nominal dimension D by the sample of neighbouring thickness, be shown in Table in 1, the present embodiment,
D=16mm.
Table 1 is threadedly coupled rectangular cross section specimen size
Determine original width b0：By GB/T 196, M16 path D is checked in1=13.835mm, foundation
Obtain b0M=8.54mm, it is determined that original width b0=8.0mm., also can be by neighbouring thickness to simplify processing, check problem
Sample takes identical b0, it is shown in Table in 1, the present embodiment, takes b0=6.0mm.
Sample preprocessing：Sample is processed into rectangular cross section and takes the lead sample, two ends threaded connection section 3 is processed into cylinder,
And cylinder ends are processed into concordant and centering, a diameter of 16.0mm of cylinder, the width of test section 2 is
b0=6.0mm, the thickness of test section 2 is a0=16.0mm.
Two ends cylinder is processed into screw thread, nominal dimension (big footpath) D of screw thread is 16mm, and drawing by high temperature sample is system
Complete.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto, appoint
What those familiar with the art the invention discloses technical scope in, technique according to the invention scheme and its hair
Bright design is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (1)
1. a kind of preparation method of drawing by high temperature sample, it is characterised in that the drawing by high temperature sample is that conventional rectangle is horizontal
Take the lead drawing by high temperature sample and transform into the stretching examination that two ends are threaded linkage section, middle part is rectangular cross section test section in section
Sample, the threaded connection fixture that the drawing by high temperature sample can be threadedly coupled drawing by high temperature sample by conventional circular cross section is clamped
Carry out high temperature tension test；The specific manufacturing process of drawing by high temperature sample comprises the following steps：
1) the screw thread nominal diameter D of threaded connection section is determined：Drawing by high temperature sample is taken the lead according to conventional rectangular cross section
Original thickness a0, it is closest to sample original thickness a by the nominal diameter D roundings for being threadedly coupled section0And meet GB/T 196
《Regular screw threads basic size》The numerical value of given size；
2) test section original width b is determined0：If the cross-sectional area of drawing by high temperature sample threaded connection section is S1, test section
Cross-sectional area is S0；ThenS0=a0b0D in m, formula1To be threadedly coupled the path of section screw thread, b0For height
Warm tensile sample original width, b0M is the maximum original width of drawing by high temperature sample；To ensure sample fracture position in test section,
It is required that S1≥1.1S0, thenThus Breadth Maximum b is obtained0m；b0Take closest to b0M numerical value, and
The revision of the convention is to 0.5mm；
3) two ends of drawing by high temperature sample threaded connection section is first processed into cylinder by screw thread nominal diameter D, and by cylinder
The processing of body end portion is concordant and centering, and it is constant that the test section in the middle part of drawing by high temperature sample still retains original rectangular cross section, its
Thickness is a0, width is b0；
4) on the basis of cylinder ends centre bore, drawing by high temperature sample two ends threaded connection section is processed into screw thread, screw thread
Big footpath size be D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610113205.XA CN107132086A (en) | 2016-02-29 | 2016-02-29 | A kind of preparation method of drawing by high temperature sample |
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| CN201610113205.XA CN107132086A (en) | 2016-02-29 | 2016-02-29 | A kind of preparation method of drawing by high temperature sample |
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| CN201610113205.XA Pending CN107132086A (en) | 2016-02-29 | 2016-02-29 | A kind of preparation method of drawing by high temperature sample |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107515147A (en) * | 2017-10-17 | 2017-12-26 | 东北大学 | A kind of sample preparation accessory for the burnt laminar tensile sample of high-temperature laser copolymerization |
| CN109187120A (en) * | 2018-07-24 | 2019-01-11 | 南京钢铁股份有限公司 | A kind of clad steel plate substrate tensile sample |
| CN110779799A (en) * | 2019-11-20 | 2020-02-11 | 青岛滨海学院 | Thermal management composite material tensile test sample and preparation method thereof |
| CN111351707A (en) * | 2018-12-20 | 2020-06-30 | 中核北方核燃料元件有限公司 | Device and method for detecting welding tension of annular fuel assembly guide pipe |
| CN111351708A (en) * | 2018-12-20 | 2020-06-30 | 中核北方核燃料元件有限公司 | Device and method for detecting welding tension of annular fuel assembly buffer tube |
| CN113281192A (en) * | 2021-06-18 | 2021-08-20 | 中国船舶重工集团公司第七二五研究所 | Cold-hot alternating fatigue test method under constant stress |
| CN114152508A (en) * | 2021-12-03 | 2022-03-08 | 内蒙古航天红岗机械有限公司 | Ultra-high strength steel tensile test tool |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107515147A (en) * | 2017-10-17 | 2017-12-26 | 东北大学 | A kind of sample preparation accessory for the burnt laminar tensile sample of high-temperature laser copolymerization |
| CN109187120A (en) * | 2018-07-24 | 2019-01-11 | 南京钢铁股份有限公司 | A kind of clad steel plate substrate tensile sample |
| CN111351707A (en) * | 2018-12-20 | 2020-06-30 | 中核北方核燃料元件有限公司 | Device and method for detecting welding tension of annular fuel assembly guide pipe |
| CN111351708A (en) * | 2018-12-20 | 2020-06-30 | 中核北方核燃料元件有限公司 | Device and method for detecting welding tension of annular fuel assembly buffer tube |
| CN111351707B (en) * | 2018-12-20 | 2022-12-20 | 中核北方核燃料元件有限公司 | Device and method for detecting welding tension of annular fuel assembly guide pipe |
| CN111351708B (en) * | 2018-12-20 | 2022-12-20 | 中核北方核燃料元件有限公司 | Device and method for detecting welding tension of annular fuel assembly buffer tube |
| CN110779799A (en) * | 2019-11-20 | 2020-02-11 | 青岛滨海学院 | Thermal management composite material tensile test sample and preparation method thereof |
| CN110779799B (en) * | 2019-11-20 | 2022-08-19 | 青岛滨海学院 | Thermal management composite material tensile test sample and preparation method thereof |
| CN113281192A (en) * | 2021-06-18 | 2021-08-20 | 中国船舶重工集团公司第七二五研究所 | Cold-hot alternating fatigue test method under constant stress |
| CN114152508A (en) * | 2021-12-03 | 2022-03-08 | 内蒙古航天红岗机械有限公司 | Ultra-high strength steel tensile test tool |
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Application publication date: 20170905 |
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