CN106769458A - Steel pipe stretching device - Google Patents
Steel pipe stretching device Download PDFInfo
- Publication number
- CN106769458A CN106769458A CN201611135128.4A CN201611135128A CN106769458A CN 106769458 A CN106769458 A CN 106769458A CN 201611135128 A CN201611135128 A CN 201611135128A CN 106769458 A CN106769458 A CN 106769458A
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- cushion block
- stretching device
- sample
- tensioning
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 41
- 239000010959 steel Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 23
- 239000000463 material Substances 0.000 abstract description 11
- 238000002474 experimental method Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- G01N3/02—Details
- G01N3/04—Chucks
-
- 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
- G01N2203/0017—Tensile
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0252—Monoaxial, i.e. the forces being applied along a single axis of the specimen
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0274—Tubular or ring-shaped specimens
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0296—Welds
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of general material mechanical performance testing machine special purpose device, material mechanics experiment device field is applied to, such as steel pipe tensile property test can be especially useful for steel pipe stretching mechanical property testing, and in particular to a kind of steel pipe stretching device；Including a pair of tensioning chucks, a pair of alignment pins and a pair semicircle cushion blocks, tensioning chuck is monoblock type, the cylindrical tail portion of tensioning chuck is connected with testing machine assembling, the sample fixing combination portion of tensioning chuck opens up the rectangular channel for installing tensile sample, correspondence is offered on two avris walls of rectangular channel through two fixed location holes, location hole is opened up in the symmetric position of two cushion blocks, after alignment pin is also cross the location hole on tensioning chuck and cushion block, make two circumferential ends of tensile sample respectively with tensioning chuck, connected between cushion block and form a whole set of stretching device, the draw direction of tensile sample is axially vertical with alignment pin.
Description
Technical field
The present invention relates to a kind of general material mechanical performance testing machine special purpose device, material mechanics experiment device is applied to
Field, such as steel pipe tensile property are tested, and can be especially useful for steel pipe stretching mechanical property testing, and in particular to drawn to a kind of steel pipe
Stretch device.
Background technology
At present, the used professional drawing pipe testing machine in laboratory is to use destruction pipe geometry, in axial direction local
Materials piece, then axial tension tubing, produce frictional force to clamp by the two ends with stretching steel pipe axial direction coupons.Existing
Have in the tension test of specialty, existing Steel Tube Tensile Test machine is only in axial tension, it is impossible to radial drawing, and can only locally take
Sample, so as to cause the steel pipe during tension test to be destroyed, and causes the wave of the steel pipe test material of a suitable segment length
Take.Especially for the mechanics inspection of welded tube, it is impossible to check the mechanical property of commissure.
The content of the invention
It is an object of the invention to overcome the shortcomings of existing use technology, and a kind of steel pipe stretching device is provided, be applied to have
On the cupping machine of displacement transducer and mechanics sensor, it is adaptable to which, to the various stretching experiments of steel pipe, it can substitute existing
Professional drawing pipe testing machine, change original device, draw direction and force way, make tubing not by frictional force, and
Be the pressure between sample inner surface and cushion block outer round surface as oil lubrication is taken between pulling force, and sample and cushion block, make
In drawing process, sample can naturally adjust centering, it is ensured that the stress on sample both sides is equal.Experiment only needs to conventional omnipotent power
Testing machine is learned, is that the mechanics performance determining of steel pipe tensile sample is provided convenience, and ring specimen ensure that the integrality of steel pipe,
Waste of materials and tubing is not destroyed.
In order to reach the purpose of foregoing invention creation, the present invention uses following technical proposals：
A kind of steel pipe stretching device, including a pair of tensioning chucks, a pair of alignment pins and a pair semicircle cushion blocks, tensioning chuck
It is monoblock type, i.e., tensioning chuck forms one, the circle of tensioning chuck by the cylindrical tail portion and sample fixed position of tensioning chuck
Cylindricality afterbody is connected with testing machine assembling, and the sample fixing combination portion of tensioning chuck opens up the rectangular channel for installing tensile sample,
The two ends of cushion block, tensile sample can be made to be arranged in rectangular channel, correspondence is offered on two avris walls of rectangular channel through fixation
Two location holes, open up location hole in the symmetric position of two cushion blocks, alignment pin is also cross on tensioning chuck and cushion block
After location hole, two circumferential ends of tensile sample are made to be connected a whole set of stretching device of formation between tensioning chuck, cushion block respectively,
The draw direction of tensile sample is axially vertical with alignment pin.Steel pipe stretching device of the present invention is applied to various types of stretching examinations
The tension test of machine is tested, it can carry out various tension tests to steel pipe, it can substitute existing drawing pipe testing machine, changed
Original device, draw direction and force way, make tubing not by skin-friction force, but by the support force of cushion block make steel
Pipe sample circumferentially deforms, and it only needs to conventional omnipotent mechanics machine, and sample ensure that the complete new property of steel pipe, not unrestrained
Take material and do not destroy tubing.
Preferably, described cushion block uses oil lubrication with tensile sample, and both can naturally adjust right in drawing process
In
Preferably, gap is formed between the location hole on the alignment pin and cushion block to coordinate, its gap is preferably dimensioned to be 0.1
~0.3mm.
Preferably, the clearance distance between two side walls and cushion block of the rectangular channel is more preferably less than 0.1~0.2mm.
Preferably, the external diameter of described cushion block is preferably 3~7mm with the internal diameter minimum dimension difference of tensile sample.
The present invention compared with prior art, has the following advantages that：
Steel pipe stretching device of the present invention can carry out the tension test of various samples to tubing, in drawing process, change
The method of clamping of original fixture, draw direction and force way, make tubing not by skin-friction force, but rely on the resistance of cushion block
Power deforms tubular product sample, and it only needs to conventional omnipotent mechanics machine, for the mechanical property of steel pipe tensile sample is provided
It is convenient, and waste of materials and tubing is not destroyed, the tension test of welded tube is particularly well-suited to, detect the mechanical property of welded seam area
Energy.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
Other accompanying drawings are obtained with according to these accompanying drawings.
Accompanying drawing 1 is the steel pipe stretching device of the embodiment of the present invention 1 clamping steel pipe working state schematic representation.
Accompanying drawing 2 is each component pieces decomposition texture schematic diagram of steel pipe stretching device of the embodiment of the present invention 1.
Accompanying drawing 3 is the steel pipe stretching device generalized section of the embodiment of the present invention 1.
Accompanying drawing 4 is the alignment pin schematic diagram of the embodiment of the present invention 1.
Accompanying drawing 5 is the standard tensile specimen schematic diagram for matching the steel pipe stretching device of the embodiment of the present invention 1.
Label declaration：1st, tensioning chuck；11st, cylindrical tail portion；12nd, sample fixed part；2nd, alignment pin；3rd, cushion block；4th, draw
Stretch sample；5th, location hole；6th, rectangular channel；
Specific embodiment
With reference to embodiment, the present invention is described in further detail, following examples be explanation of the invention and
The invention is not limited in following examples.
Embodiment 1：
In the present embodiment, referring to Fig. 1~Fig. 5, a kind of steel pipe stretching device, including one group of tensioning chuck 1, one group of positioning
Pin 2 and one group of cushion block 3, tensioning chuck 1 are consolidated for monoblock type, i.e. tensioning chuck 1 by the cylindrical tail portion 11 and sample of tensioning chuck
Determine position 12 and form one, tensioning chuck 1 is connected by the cylindrical tail portion of tensioning chuck with testing machine assembling, tensioning chuck
Sample fixing combination portion opens up the rectangular channel 6 for installing tensile sample, and cushion block 3, the two ends of tensile sample 4 can be made to be arranged on rectangular channel 6
It is interior, correspondence is offered on two avris walls of rectangular channel 6 through fixed location hole 6, opened up in the symmetric position of two cushion blocks
Location hole 5, alignment pin 2 makes two circumferential ends of tensile sample 4 also cross the location hole 5 on tensioning chuck 1 and cushion block 3
The a whole set of stretching device of formation, draw direction and the alignment pin 2 of tensile sample 1 are connected between tensioning chuck 1, cushion block 3 respectively
It is axially vertical.
In the present embodiment, the tensile sample 4 for matching with steel pipe stretching device cuts into the sample of any width.This reality
A tensioning chuck of steel pipe stretching device 1 is applied for monoblock type, the cylindrical tail portion of tensioning chuck 1 is arranged on cupping machine, drawn
The width of the rectangular channel 6 of the other end stretched is adapted to the thickness of the tensile sample 4 of steel pipe shape.Tensioning chuck 1 and in rectangle
Correspondence is offered on two avris walls of groove 6 through fixed location hole 6, make two circumferential ends of tensile sample 4 respectively with drawing
Stretch and coordinate with alignment pin 2 simultaneously between chuck 1, the three of cushion block 3, just can so carry out tension test.In drawing process, alignment pin
2 and cushion block 3 can produce very big resistance, to meet the tension test requirement of tensile strength sample high, be particularly well-suited to various
The matching used stretching device of type cupping machine tension test.
, using Cr12MoV mould steel, cushion block 3 makes by only needing Quenching Treatment for the present embodiment tensioning chuck 1 and the material of cushion block 3
Need after Quenching Treatment that tempered treatment could be used again with, tensioning chuck 1, the material of alignment pin 2 uses common GCr15 bearings
Steel.
Embodiment two：
The present embodiment is substantially the same manner as Example 1, is particular in that：
In the present embodiment, the external diameter of cushion block 3 is less than 3~7mm with the internal diameter minimum dimension difference of tensile sample 4, is so difficult
Stress concentration is produced, it is possible to prevente effectively from the experiment abberation caused due to sample inwall out-of-flatness, tension test more they tends to static state
Stretching.
Embodiment three：
In the present embodiment, clearance distance and location hole 5, alignment pin 2, drawing between two parallel side walls of rectangle square groove 6
Stretch sample 4, the size of cushion block 3 can be adjusted arbitrarily, the stretching examination of the superhigh intensity steel pipe of different application in reality can be met
The detection tested.
Furthermore, it is necessary to explanation, the specific embodiment described in this specification, is named the shape of its parts and components
Title etc. can be with difference.The equivalent or simple change that all constructions according to described in inventional idea of the present invention, feature and principle are done, wraps
Include in the protection domain of patent of the present invention.Those skilled in the art can be to described specific implementation
Example is made various modifications or supplement or is substituted using similar mode, without departing from structure of the invention or surmounts this
Scope as defined in the claims, all should belong to protection scope of the present invention.
Claims (5)
1. a kind of steel pipe stretching device, it is characterised in that：Described steel pipe stretching device includes：A pair of tensioning chucks (1), a pair
Alignment pin (2) and a pair of cushion blocks (3),
Described tensioning chuck (1) forms one by the cylindrical tail portion (11) and sample fixed position (12) of tensioning chuck,
The sample fixed position (12) opens up the rectangular channel (6) for installing tensile sample；Cushion block (3), tensile sample (4) two ends peace
In rectangular channel (6)；
Correspondence is offered on two avris walls of the rectangular channel (6) through fixed location hole (5), two symmetrical positions of cushion block
Put and open up location hole, alignment pin (2) makes tensile sample (4) also cross the location hole (5) on tensioning chuck (1) and cushion block (3)
Two circumferential ends be connected between tensioning chuck (1), cushion block (3) a whole set of stretching device of formation respectively, tensile sample (1)
Draw direction is axially vertical with alignment pin (2).
2. steel pipe stretching device according to claim 1, it is characterised in that：Described cushion block (3) is adopted with tensile sample (4)
With oil lubrication, and both can be adjusted in naturally in drawing process.
3. steel pipe stretching device according to claim 2, it is characterised in that：On described alignment pin (2) and cushion block (3)
Form gap between location hole (5) to coordinate, its gap is preferably dimensioned to be 0.1~0.3mm.
4. steel pipe stretching device according to claim 1, it is characterised in that：Two side walls of described rectangular channel (6) with
Clearance gap between cushion block (3) is preferably 0.1~0.2mm.
5. according to any described steel pipe stretching device of Claims 1-4, it is characterised in that：The external diameter of described cushion block (3) with
The internal diameter minimum dimension difference of tensile sample 4 is preferably 3~7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611135128.4A CN106769458A (en) | 2016-12-11 | 2016-12-11 | Steel pipe stretching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611135128.4A CN106769458A (en) | 2016-12-11 | 2016-12-11 | Steel pipe stretching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106769458A true CN106769458A (en) | 2017-05-31 |
Family
ID=58875290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611135128.4A Pending CN106769458A (en) | 2016-12-11 | 2016-12-11 | Steel pipe stretching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106769458A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112304772A (en) * | 2020-09-28 | 2021-02-02 | 烟台泰悦流体科技有限公司 | Testing device of multifunctional hose |
| CN112414841A (en) * | 2020-10-13 | 2021-02-26 | 重庆工商大学 | Device and method for testing circumferential tensile strength of self-adaptive correcting pipe |
| CN113188906A (en) * | 2021-04-25 | 2021-07-30 | 重庆科技学院 | Rock uniaxial tension test device and method |
| CN114486504A (en) * | 2021-12-17 | 2022-05-13 | 浙江大学 | Clamp for small-pipe-diameter steel pipe tensile test in high-pressure hydrogen environment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203241296U (en) * | 2013-05-17 | 2013-10-16 | 上海大学 | Tensile clamp device for longitudinal arc sheet tensile sample of high-strength pipe |
| CN206540774U (en) * | 2016-12-11 | 2017-10-03 | 华电电力科学研究院 | A kind of steel pipe stretching device |
-
2016
- 2016-12-11 CN CN201611135128.4A patent/CN106769458A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203241296U (en) * | 2013-05-17 | 2013-10-16 | 上海大学 | Tensile clamp device for longitudinal arc sheet tensile sample of high-strength pipe |
| CN206540774U (en) * | 2016-12-11 | 2017-10-03 | 华电电力科学研究院 | A kind of steel pipe stretching device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112304772A (en) * | 2020-09-28 | 2021-02-02 | 烟台泰悦流体科技有限公司 | Testing device of multifunctional hose |
| CN112414841A (en) * | 2020-10-13 | 2021-02-26 | 重庆工商大学 | Device and method for testing circumferential tensile strength of self-adaptive correcting pipe |
| CN112414841B (en) * | 2020-10-13 | 2023-11-24 | 重庆工商大学 | Device and method for testing circumferential tensile strength of self-adaptive pilot pipe |
| CN113188906A (en) * | 2021-04-25 | 2021-07-30 | 重庆科技学院 | Rock uniaxial tension test device and method |
| CN113188906B (en) * | 2021-04-25 | 2022-05-20 | 重庆科技学院 | Rock uniaxial tension test device and method |
| CN114486504A (en) * | 2021-12-17 | 2022-05-13 | 浙江大学 | Clamp for small-pipe-diameter steel pipe tensile test in high-pressure hydrogen environment |
| CN114486504B (en) * | 2021-12-17 | 2024-02-09 | 浙江大学 | Clamp for small-diameter steel pipe tensile test in high-pressure hydrogen environment |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170531 |