CN204963844U - Testing arrangement of pole tensile sample percentage elongation after fracture and percentage reduction of area - Google Patents
Testing arrangement of pole tensile sample percentage elongation after fracture and percentage reduction of area Download PDFInfo
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- CN204963844U CN204963844U CN201520620404.0U CN201520620404U CN204963844U CN 204963844 U CN204963844 U CN 204963844U CN 201520620404 U CN201520620404 U CN 201520620404U CN 204963844 U CN204963844 U CN 204963844U
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Abstract
The utility model discloses a testing arrangement of pole tensile sample percentage elongation after fracture and percentage reduction of area, comprising a base plate, open the recess that the shape is corresponding that has after cutting open along the axial with the sample on the bottom plate, still include two and recess vertically baffle, the baffle can be followed recess extending direction and slided. Utilize the device to measure pole sample percentage elongation after fracture and percentage reduction of area, easy operation is convenient easy to go, and measured data is reliable, accurate, detects fastly, is applicable to the daily batch inspection examination of this type of material, this device simple structure, it is easy to make, and the cost is low -priced, but wide application in the detection of pole tensile sample percentage elongation after fracture and percentage reduction of area.
Description
Technical field
The utility model relates to a kind of proving installation for pole tensile sample elongation after fracture and reduction of area.
Background technology
Stretching is modal test method in material mechanical performance test, at certain temperature and static force, sample is stretched vertically, with the stress of Knowing material when elastic deformation and plastic yield, the situation of strain, and the fracture strength of material under maximum stress, wherein elongation after fracture and sectional shrinkage are the leading indicators of evaluation material plasticity.
Elongation after fracture refers to that sample breaks the increment of rear gauge length and the number percent of former gauge length length, and reduction of area refers to that sample breaks the maximum reduction of rear bottleneck cross-sectional area and the number percent of former cross-sectional area.The test of elongation after fracture and reduction of area is also the important technical links of whole test job, the whether convenient detection efficiency having influence on sample in enormous quantities of mensuration process, meanwhile, to sample have no progeny gauge length Lu mensuration whether specification also determine the accuracy detecting data.For the measuring method of elongation after fracture and reduction of area, clear stipulaties is had in GB/T228.1-2010 standard, all require the part of sample fracture carefully to connect makes its axis be on same straight line together, for elongation after fracture, in standard also special propose to take special measure to guarantee sample fracture part suitably contacts rear measurement sample and to have no progeny gauge length.During test elongation after fracture, often exist allly to naturally droop as samples, cannot accurately centering or the accuracy that many uncertain factor impacts measure such as tight type is bad, become a technical indicator often occurring disputing on.
At present in this fields of measurement, what generally adopt is after a people aims at sample of having no progeny, a hand-held good fracture sample also keeps point-blank, two ends clamp, and another hand utilizes gage measuring to have no progeny gauge length, people operation is wasted time and energy, and artifical influence factor is comparatively large, the precision that the gauge length that can not well ensure to have no progeny is measured; Also the mode having employing two people to coordinate is measured, after the sample of fracture mates according to pattern of having no progeny by a people completely, firmly clamp and keep point-blank, and another person utilizes surveying instrument to measure gauge length, this kind of mode needs two personnel perfectly to coordinate, operating efficiency is low, and easily causes personal error; By searching related data, have and adopt special measurement mechanism to carry out measuring, the measurement frock of some employing carry magnets is being measured after post-rift sample attraction, but ferrimagnet is suitable only for for this frock, then inapplicable for nonferromugnetic material, what also have utilizes machine to add sample two ends is reserved center pit, fracture sample is being clamped by center pit, two ends apply certain power and the axle center making fracture sample point-blank, only depend on holding force that sample is docked completely, hang in the sky, easily drop, efficiency is low.
Utility model content
For the technical matters of above-mentioned existence, the utility model provides the proving installation of a kind of pole tensile sample elongation after fracture and reduction of area, and it is simple to operate, and measure accurately, efficiency is high.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: the proving installation of a kind of pole tensile sample elongation after fracture and reduction of area, comprises base plate, described base plate has the groove that the shape after cutting open vertically to sample is corresponding; Also comprise two pieces with the baffle plate of texturearunaperpendicular, described baffle plate can slide along groove bearing of trend.
Improve as one, described groove is divided into three sections, and its cross section is circular arc, and the degree of depth of middle a section is less than the degree of depth of two ends groove, and the deep equality of two ends groove; The axle center of described three sections of grooves on the same line; The radius of interlude groove is R0, groove depth is h0, length is La; The diameter of sample testing section is d0, parallel length is LC; The radius of the groove at two ends is R, groove depth is h; Sample holder section diameter is d.Its shape is arranged agrees with mutually with the shape of sample syllogic, sample is placed after groove more firm, avoids wobble effects test result.
Improve as one, the radius R 0 >=d0/2 of interlude groove, groove depth h0≤d0/2, La≤LC.Make medial launder shape and sample can be good at mating, be conducive to the measurement of elongation after fracture.
Improve as one, the radius R >=d/2 of the groove at two ends, groove depth h≤d/2, and R-R0=(d-d0)/2.The radius of two ends groove is more than or equal to the radius of sample holder end, groove depth is less than or equal to gripping section radius, and intermediate groove is the difference in height of sample holder end and horizontal segment than the distance that two ends groove exceeds, fracture sample is played to the effect supported completely further, ensure sample stably safely as on device.
Improve as one, described baffle plate bottom surface and base plate are opened reeded flat face and are touched, the height of baffle plate in groove plane≤sample holder section diameter, and baffle plate is provided with bolt.Baffle plate is utilized to push against the sample of fracture, and utilize bolt to locate, to meet GB/T228.1-2010 standard to examination requirements, the height of baffle plate in groove plane will accommodate end diameter d lower than style, to have no progeny gauge length in order to avoid affecting vernier caliper measurement, it is convenient, accurately to ensure further to measure.
Usefulness of the present utility model is: utilize this device to measure pole sample elongation after fracture and reduction of area, simple to operation easy, and reliable measuring data, accurately, detection speed is fast, is applicable to the daily batch inspection and acceptance of this type of material; This apparatus structure is simple, and easy to manufacture, inexpensive, can be widely used in the detection of pole tensile sample elongation after fracture and reduction of area.
Accompanying drawing explanation
Fig. 1 is the structural representation of sample.
Fig. 2 is side view of the present utility model.
Fig. 3 is the vertical view of base plate in the utility model.
Mark in figure: 1 test section, 2 gripping sections, 3 base plates, 4 grooves, 5 grooves, 6 baffle plates, 7 bolts.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The shape of sample as shown in Figure 1, comprises the gripping section 2 at test section 1 and two ends.Gripping section 2 and test section 1 are right cylinder, and the diameter of test section 1 is less than gripping section.
As shown in Figure 2 and Figure 3, the utility model comprises base plate 3, described base plate 3 has the groove that the shape after cutting open vertically to sample is corresponding; Also comprise two pieces with the baffle plate 6 of texturearunaperpendicular, described baffle plate 6 can slide along groove bearing of trend.Baffle plate 6 bottom surface and base plate 3 are opened reeded flat face and are touched, and baffle plate 6 is provided with bolt 7.Described groove is divided into three sections, and its cross section is circular arc, and the degree of depth of middle one section of groove 4 is less than the degree of depth of two ends groove 5, and the deep equality of two ends groove 5; The axle center of described three sections of grooves 4, groove 5 on the same line; The radius of interlude groove 4 is R0, groove depth is h0, length is La; The diameter of sample testing section is d0, length is LC; The radius of the groove 5 at two ends is R, groove depth is h; Sample holder section 2 diameter is d.Radius R 0 >=the d0/2 of interlude groove 4, groove depth h0≤d0/2, La≤LC.Radius R >=the d/2 of the groove 5 at two ends, groove depth h≤d/2, and R-R0=(d-d0)/2.Height h1≤the d of baffle plate in groove plane.
Be Φ 10mm for diameter d 0, test section 1 length LC is 60mm, and gripping section 2 diameter d is the round bar shape sample of 18mm, and the mode measuring length growth rate and reduction of area is thereafter as follows:
Base plate 3 total length L b is 200mm, and interlude groove 4R0 is 5mm, groove depth h0 be 2.5mm, La is 50mm, and two ends groove 5, R is 9mm, groove depth h is 6.5mm; Baffle plate 6 height h1 is 9mm.
1, the sample of fracture is placed in the groove of base plate 3, ensure that the horizontal segment of fracture sample is placed in the intermediate groove 4 of device, because of the circular groove particular design of device, the distance particularly exceeding two ends in the middle part of base plate 3 completely and the difference in height of round bar shape sample holder end and center parallel section, completely by sample and device close contact, fracture sample is served to the effect of stable support.
2, by fracture sample according to fracture apperance to connecting.
3, first a side shield 6 is moved, it is made to contact completely with fracture sample one transverse plane, screwed in place stud 7 fixed dam 6, and then another block baffle plate 6 mobile makes it contact a little exerting oneself with second half fracture sample, ensure that fracture sample contacts completely, and on same straight line, screwed in place stud 7.
4, survey crew is had no progeny by survey instrument measurement the diameter of gauge length and minimum bottleneck.
5, elongation after fracture and the reduction of area of pole tensile sample just can be counted as by formula.
The measurement mechanism of its elongation after fracture of pole type sample and reduction of area, base plate 3 there are the three sections of circular grooves substantially coincide with pole sample, one of technical characterstic guarantees that three sections of groove center line are all on the same plane perpendicular to deep-slotted chip breaker surface level, two ends groove 5 radius and length identical, intermediate groove 4 is the difference in height of sample holder section and horizontal segment than the distance that two ends groove 5 exceeds, and plays supporting role completely to fracture sample.Secondly by fracture sample on device to after connecting, unclamp after artificial firmly clamping, keep fracture sample to fit tightly by slide damper, slide damper is fixed by bolt.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a proving installation for pole tensile sample elongation after fracture and reduction of area, comprises base plate, it is characterized in that: described base plate has the groove that the shape after cutting open vertically to sample is corresponding; Also comprise two pieces with the baffle plate of texturearunaperpendicular, described baffle plate can slide along groove bearing of trend.
2. the proving installation of a kind of pole tensile sample elongation after fracture according to claim 1 and reduction of area, it is characterized in that: described groove is divided into three sections, its cross section is circular arc, and the degree of depth of middle a section is less than the degree of depth of two ends groove, and the deep equality of two ends groove; The axle center of described three sections of grooves on the same line; The radius of interlude groove is R0, groove depth is h0, length is La; The diameter of sample testing section is d0, length is LC; The radius of the groove at two ends is R, groove depth is h; Sample holder section diameter is d.
3. the proving installation of a kind of pole tensile sample elongation after fracture according to claim 2 and reduction of area, is characterized in that: the radius R 0 >=d0/2 of interlude groove, groove depth h0≤d0/2, La≤LC.
4. the proving installation of a kind of pole tensile sample elongation after fracture according to claim 2 and reduction of area, is characterized in that: the radius R >=d/2 of the groove at two ends, groove depth h≤d/2, and R-R0=(d-d0)/2.
5. the proving installation of according to claim a kind of pole tensile sample elongation after fracture and reduction of area, it is characterized in that: described baffle plate bottom surface and base plate are opened reeded flat face and touched, the height of baffle plate in groove plane≤sample holder section diameter, and baffle plate is provided with bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520620404.0U CN204963844U (en) | 2015-08-18 | 2015-08-18 | Testing arrangement of pole tensile sample percentage elongation after fracture and percentage reduction of area |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520620404.0U CN204963844U (en) | 2015-08-18 | 2015-08-18 | Testing arrangement of pole tensile sample percentage elongation after fracture and percentage reduction of area |
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| CN204963844U true CN204963844U (en) | 2016-01-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931423A (en) * | 2018-05-23 | 2018-12-04 | 中国原子能科学研究院 | A method of measurement tensile sample elongation after fracture and the contraction percentage of area |
| CN114187348A (en) * | 2022-02-16 | 2022-03-15 | 成都大公博创信息技术有限公司 | Method for measuring elongation at break of cable sheath based on computer vision |
-
2015
- 2015-08-18 CN CN201520620404.0U patent/CN204963844U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931423A (en) * | 2018-05-23 | 2018-12-04 | 中国原子能科学研究院 | A method of measurement tensile sample elongation after fracture and the contraction percentage of area |
| CN114187348A (en) * | 2022-02-16 | 2022-03-15 | 成都大公博创信息技术有限公司 | Method for measuring elongation at break of cable sheath based on computer vision |
| CN114187348B (en) * | 2022-02-16 | 2022-05-06 | 成都大公博创信息技术有限公司 | Method for measuring elongation at break of cable sheath based on computer vision |
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