CN206208646U - A kind of novel adhesive tensile shear strength determines specimen mounting - Google Patents
A kind of novel adhesive tensile shear strength determines specimen mounting Download PDFInfo
- Publication number
- CN206208646U CN206208646U CN201621269670.4U CN201621269670U CN206208646U CN 206208646 U CN206208646 U CN 206208646U CN 201621269670 U CN201621269670 U CN 201621269670U CN 206208646 U CN206208646 U CN 206208646U
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- sample
- nut
- tweezer
- contiguous block
- shear strength
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Abstract
Specimen mounting is determined the utility model discloses a kind of novel adhesive tensile shear strength, adhesive tensile shear strength is related generally to and is determined device field.Including supporting table, supercharging device, sample case, pressing plate and sample, the sample case is fixedly connected with supporting table, the supercharging device includes threaded rod, the pressing plate is adapted with sample case, the pressing plate top is provided with flange, the sample includes left side sample and right side sample, and one end of the left side sample is glued with one end of right side sample, and the other end of the left side sample and the other end of right side sample are contacted with two end side panels respectively.The beneficial effects of the utility model are：The utility model can not just be fixed placement by the sample aperture on sample to sample；The present apparatus processing and is operated not by any mechanical arrangements, only by simplest placement, remove action and reach standard regulation sample and overlap precision, substantially reduce mechanical processing difficulty and expense, it is cost-effective, improve test efficiency.
Description
Technical field
The utility model is related to adhesive tensile shear strength to determine device field, specifically a kind of novel adhesive stretching
Shear strength determines specimen mounting.
Background technology
Have in the measure of GB-7124-2008-T adhesive tensile shear strengths：" it is strongly recommended that making in bonding process
Bonded part is accurately positioned with fixture ".Therefore ensure the importance and necessity of sample accurate positioning function in specimen mounting
Obviously.
Ensure that sample is accurately positioned in industry to be typically with being provided with hole on sample, borehole jack is entered into two has precision
Optical axis come ensure sample overlap precision.But this kind of specimen mounting has following disadvantage：
1st, after sample test of many times, hole can be elongated, and cause overlap distance to increase, and to be quadratured with standard and be not inconsistent, and because
Area discrepancy directly affects the correct judgement to adhesive intensity without comparativity.
2nd, traditional specimen mounting ensures that the mode of precision is brought very to sample placement by the mechanical engagement of optical axis and sample aperture
Big inconvenience, or coordinating tension not easy to remove, or coordinating loose precision not enough, cooperation makes the operating time extend with dismounting, especially
It is that sample is not accurately positioned also when quick glue is determined, and excessive glue does not have enough time also to remove, and adhesive has been consolidated
Change, more the solidification excessive glue to sample is removed and brings difficulty.
3rd, be in traditional specimen mounting by optical axis and sample aperture cooperation ensure overlap joint dimensional accuracy (sample precision ±
0.1, overlap joint precision ± 0.25), to shaft diameter precision, the depth of parallelism of two axles, sample aperture distance, sample and axle fit tolerance,
The tolerance of dimension chain has requirement higher, and in addition to using machining center and wire cutting, other process equipments are difficult to reach
So requirement of precision, improves processing cost, and small enterprise is even more and feels the difficult of processing.
Utility model content
The purpose of this utility model is to provide a kind of novel adhesive tensile shear strength to determine specimen mounting, and it is abandoned
It is traditional that the pattern that sample overlaps precision is reached by mechanical engagement mode, i.e. matching somebody with somebody using the hole on sample and the axle of specimen mounting
Conjunction mode, only by that can not place simple sample again, can just reach new standard regulation sample overlap joint precision.Avoid sample many
It is secondary tested after, due to multiple stress, through hole can be elongated, and cause overlap distance to increase, and to be quadratured with standard and be not inconsistent, and
Due precision is lost, is caused to reuse result of the test is had a strong impact on when sample is tested, thus directly affected to gluing
The evaluated error of agent intensity；And the present apparatus is more prone to processing while cooperation is required between sample is ensured；And sample
Placement process in simply simply place, take out process, place and pull down sample arbitrarily, do not have the limitation of any mechanical device,
Hinder, determine, remove excessive glue quickly, eliminate sample adjustment time more long, not only increase efficiency and glue will not occur
The problem of stick bonding sample frame.
The utility model to achieve the above object, is achieved through the following technical solutions：
1st, a kind of novel adhesive tensile shear strength determines specimen mounting, including supporting table, supercharging device, sample case, pressure
Plate and sample, the supporting table include contiguous block, and the contiguous block is provided with the first screwed hole, the sample case include top board,
Base plate, side plate and inner panel, the base plate are fixedly connected with supporting table, and the top board is provided with through hole, and the inner panel middle part is provided with
Opening, the supercharging device includes threaded rod, and the threaded rod is corresponding with the first screwed hole, and the pressing plate is mutually fitted with sample case
Should, the pressing plate top is provided with flange, and the flange top is provided with circular groove, and bearing, the bearing and spiral shell are provided with the circular groove
Rasp bar is adapted, and the sample includes left side sample and right side sample, one end of the left side sample and one end of right side sample
Be glued, the other end of the left side sample and the other end of right side sample contact with two end side panels respectively, the adjacent sample it
Between be provided with cushion block, the height of the cushion block is corresponding with the thickness of sample.
The supporting table also includes base and connecting rod, and the base is fixedly connected with base plate, described connecting rod one end and
Base is connected, and the connecting rod other end is provided with external screw thread, and the contiguous block is provided with the second screw thread away from first screwed hole one end
Hole, the connecting rod is threadedly coupled by the second screwed hole with contiguous block, and the contiguous block top is corresponding with the second screwed hole
Place is provided with fixing nut.
The contiguous block top is provided with the first nut, and the contiguous block bottom is provided with the second nut, first nut and
Second nut is corresponding with the first screwed hole, and first nut and the second nut are adapted with threaded rod.
The threaded rod top is provided with driving lever.
Also include sample tweezers, the sample tweezers include the first tweezer bar and the second tweezer bar, described first tweezer bar one end with
Second tweezer bar one end connects, and the other end of the first tweezer bar is provided with the first tweezer head, and the other end of the second tweezer bar is provided with the
The bottom surface of two tweezer heads, the top surface of the first tweezer head and the second tweezer head is maintained on a horizontal plane.
Prior art is contrasted, the beneficial effects of the utility model are：
1st, by setting supercharging device and sample case, supercharging device and sample case are supported by supporting table, are provided with sample case
Pressing plate, sample is positioned in sample case, and the size of sample case is adapted with the length of sample, because of sample case side plate and sample
There is precision, inserted by sample tweezers and promote sample to move and be close to both sides side plate, its overlap joint precision necessarily can guarantee that, such as
This one, placement can not be just fixed to sample by the sample aperture on sample, it is to avoid after sample is repeatedly tested, by
In multiple stress, through hole can be elongated and lose due precision, cause to reuse examination is had a strong impact on when sample is tested
Result is tested, conclusion is there is very big error；Traditional use axle, hole are abandoned and have coordinated the mode for ensureing precision, it is to avoid coordinated
Tension is not easy to remove, the problem for coordinating loose precision inadequate.And the present apparatus coordinates while requirement more between sample is ensured
Plus be easily worked；And simply simply placed in the placement process of sample, take out process, when eliminating sample adjustment more long
Between, not only increase efficiency and the problem of adhesive bonding sample frame will not occur.
2nd, connecting rod is used for connect base and contiguous block, and base is used for fixing sample case, by setting fixing nut, can
Contiguous block is fixed to certain height, the setting of supporting table is used for supporting whole device, it is ensured that the normal of device is used.
3rd, by contiguous block top set the first nut, contiguous block bottom set the second nut, and the first nut and
Second nut is corresponding with the first screwed hole, and the first nut and the second nut are adapted with threaded rod, by setting first
Nut and the second nut, the series connection of two nuts ensure that the perpendicularity of threaded rod and pressing plate.
4th, driving lever is set by threaded rod top, can more facilitates, labour-saving rotary screwing thread bar, and then promote pressing plate
For compressing sample.
5th, by setting sample tweezers, the bottom surface of the top surface of the first tweezer head and the second tweezer head is maintained on a horizontal plane,
After by the gap between the first tweezer head and the second tweezer head insertion adjacent samples, the first tweezer head and the second tweezer head are clutched, sample is taken
The place's of connecing end face is pushed both sides side plate to and is close to, and this ensures that there sample to be glued the overlap distance of one end is professional standard
12.5mm。
Brief description of the drawings
Accompanying drawing 1 is the utility model structural representation.
Accompanying drawing 2 is the first tweezer head and the second tweezer head and sample connected mode structural representation in the utility model.
Accompanying drawing 3 is sample box structure schematic diagram in the utility model.
Accompanying drawing 4 is contiguous block top view in the utility model.
Accompanying drawing 5 is sample forceps constructions schematic diagram in the utility model.
Accompanying drawing 6 is conventional specimen frame structural representation in the utility model.
Accompanying drawing 7 is sample needle construction schematic diagram in the utility model.
Label shown in accompanying drawing：
1st, sample case；2nd, pressing plate；3rd, contiguous block；4th, the first screwed hole；5th, top board；6th, base plate；7th, side plate；8th, inner panel；9、
Through hole；10th, it is open；11st, threaded rod；12nd, flange；13rd, left side sample；14th, right side sample；15th, cushion block；16th, base；17th, even
Extension bar；18th, the second screwed hole；19th, fixing nut；20th, the first nut；21st, the second nut；22nd, driving lever；23rd, the first tweezer bar；
24th, the second tweezer bar；25th, the first tweezer head；26th, the second tweezer head；27th, optical axis；28th, rectangle cross-arm；29th, sample pin.
Specific embodiment
With reference to specific embodiment, the utility model is expanded on further.It should be understood that these embodiments are merely to illustrate this
Utility model rather than limitation scope of the present utility model.In addition, it is to be understood that reading the content of the utility model instruction
Afterwards, those skilled in the art can make various changes or modifications to the utility model, and these equivalent form of values equally fall within this Shen
Please limited range.
Described in the utility model is that a kind of novel adhesive tensile shear strength determines specimen mounting, and agent structure includes support
Platform, supercharging device, sample case 1, pressing plate 2 and sample, the supporting table include contiguous block 3, and the contiguous block 3 is provided with the first spiral shell
Pit 4, contiguous block 3 is used for placing supercharging device, and cooperation by contiguous block 3, supercharging device and pressing plate 2 is used to sample
Supercharging.The sample case 1 includes top board 5, base plate 6, side plate 7 and inner panel 8, and the base plate 6 is fixedly connected with supporting table, supporting table
Bottom is used for fixing sample case 1.The top board 5 is provided with through hole 9, and through hole 9 is used for being adapted with supercharging device, and supercharging device is worn
Through hole 9 is crossed to be connected with pressing plate 2.The middle part of the inner panel 8 is provided with opening 10, and one end of every group of sample is to overlap to be bonded by adhesive
, glue is necessarily had a surplus, it is necessary to clean out, the remaining glue of cleaning can only use the method struck off, so to be provided for striking off in bonding part
The opening 10 of remaining glue.The supercharging device includes threaded rod 11, and the threaded rod 11 is corresponding with the first screwed hole 4, by setting
Increase device is put, is easy to need the adhesive of pressure-cure to use, stove solidification is entered together with specimen mounting, reduce operation and operation,
A tractor serves several purposes.The pressing plate 2 and sample case 1 are adapted, and pressing plate 2 has certain altitude and a width, and with the distance of both sides side plate 7
Precision it is guaranteed, pressing plate 2 be subject to torque when do not rotate, can only move down, so compress style.The top of the pressing plate 2 sets
There is flange 12, the top of the flange 12 is provided with circular groove, and bearing is provided with the circular groove, and the bearing is adapted with threaded rod 11,
The sample includes left side sample 13 and right side sample 14, one end of the left side sample 13 and one end glue of right side sample 14
Connect, the other end of the left side sample 13 and the other end of right side sample 14 are contacted with two end side panels 7 respectively, the adjacent sample
Between be provided with cushion block 15, the height of the cushion block 15 is corresponding with the thickness of sample, by setting cushion block 15, ensure that sample
Level is kept in overlap joint, the quality of fit between sample is improved.The side plate 7 of sample case 1 has precision with sample in the present apparatus,
Inserted by sample tweezers and promote sample to move and be close to both sides side plate 7, its overlap joint precision necessarily can guarantee that, consequently, it is possible to
Placement can not be just fixed to sample by the sample aperture on sample, it is to avoid after sample is repeatedly tested, due to multiple
Stress, through hole 9 can be elongated and lose due precision, cause to reuse to be had a strong impact on when sample is tested and test knot
Really, conclusion is made to there is very big error；Abandon the cooperation in conventional specimen frame by optical axis 27 and sample aperture and ensure precision
Mode, it is to avoid cooperation tension is not easy to remove, the problem for coordinating loose precision inadequate, and conventional specimen frame are to optical axis 27 and examination
The concentricity in sample hole has a requirement higher, and the hole on two optical axises and rectangle cross-arm 28 is slidably matched also precision higher and same
The requirement of heart degree, all necessarily requires finishing, not easy processing during processing.And the present apparatus coordinates what is required between sample is ensured
It is more prone to processing simultaneously；And simply simply placed in the placement process of sample, take out process, eliminate sample more long
Adjustment time, not only increases efficiency and the problem of adhesive bonding sample frame will not occur.
In order to ensure that the normal of device is used, the supporting table also includes base 16 and connecting rod 17, the base
16 are fixedly connected with base plate 6, and the one end of the connecting rod 17 is connected with base 16, and the other end of the connecting rod 17 is provided with external screw thread,
The contiguous block 3 is provided with the second screwed hole 18 away from the one end of the first screwed hole 4, the connecting rod 17 by the second screwed hole 18 with
Contiguous block 3 is threadedly coupled, and the top of the contiguous block 3 is provided with fixing nut 19 with the corresponding section of the second screwed hole 18.Connecting rod 17
For connect base 16 and contiguous block 3, base 16 is used for fixing sample case 1, by setting fixing nut 19, can be by contiguous block
3 are fixed to certain height, and the setting of supporting table is used for supporting whole device.
In order to ensure the perpendicularity of threaded rod 11 and pressing plate 2, the top of the contiguous block 3 is provided with the first nut 20, institute
State the bottom of contiguous block 3 and be provided with the second nut 21, the nut 21 of first nut 20 and second is corresponding with the first screwed hole 4,
The nut 21 of first nut 20 and second is adapted with threaded rod 11.By on the top of contiguous block 3, the first nut 20 is set,
The bottom of contiguous block 3 sets the second nut 21, and the series connection of two nuts ensure that the perpendicularity of threaded rod 11 and pressing plate 2.
In order to more facilitate, labour-saving rotary screwing thread bar 11, and then promote pressing plate 2 to be used for compressing sample, the spiral shell
The top of rasp bar 11 is provided with driving lever 22.
In order to more easily pushing sample lap-joint end face to both sides side plate 7 and being close to, it is ensured that sample is glued one
The overlap distance at end is the 12.5mm of professional standard, and also including sample tweezers, the sample tweezers include the first tweezer bar 23 and the
Two tweezer bars 24, described one end of first tweezer bar 23 is connected with the one end of the second tweezer bar 24, and the other end of the first tweezer bar 23 is provided with
One tweezer first 25, the other end of the second tweezer bar 24 is provided with the second tweezer first 26, the top surface of first tweezer first 25 and the second tweezer head
26 bottom surface is maintained on a horizontal plane.
Place sample when, by testing standard requirement by sample gluing after, be put into sample case 1, sample is promoted backward, it is ensured that
Sample is close to the inner panel 8 of sample case 1, after insertion sample tweezers, sample tweezers is clutched by the first tweezer bar 23 and the second tweezer bar 24,
The side plate 7 of the both sides of sample case 1 to is pushed the end of sample by the first tweezer first 25 and the second tweezer first 26 and is close to.Because of the side of both sides
Plate 7 has precision with sample, therefore can guarantee that sample overlap distance meets standard requirement.Hand push sample is finally used, sample is allowed again
The inner panel 8 of sample case 1 is close to, that is, ensure that sample is concordant.Solidifying pressure requirement according to adhesive, unscrewing thread bar, and then
Compress sample.Sample is carried out during gluing, excessive glue occurs unavoidably, cause sample end face cull influence test knot occur
Really, because the thickness of sample is 3mm, so the gap between each sample group is exactly 3mm, sample is inserted by using sample pin 29
Between gap, just can release or strike off sample end face excessive glue or cull.And when toppling over adhesive from container, often occur
Adhesive wire drawing or the inaccurate gluing agent flux of control.At this time flow to container edge adhesive sample pin 29 cut off by it is accurate
Really control the flow of adhesive.
Embodiment：
Described in the utility model is that a kind of novel adhesive tensile shear strength determines specimen mounting, and agent structure includes support
Platform, supercharging device, sample case 1, pressing plate 2 and sample, the supporting table include contiguous block 3, and the contiguous block 3 is provided with the first spiral shell
Pit 4, the sample case 1 includes top board 5, base plate 6, side plate 7 and inner panel 8, and the base plate 6 is fixedly connected with supporting table, described
Top board 5 is provided with through hole 9, and the middle part of the inner panel 8 is provided with opening 10, and the supercharging device includes threaded rod 11, the threaded rod
11 is corresponding with the first screwed hole 4, and the pressing plate 2 is adapted with sample case 1, and the top of the pressing plate 2 is provided with flange 12, described convex
The top of edge 12 is provided with circular groove, and bearing is provided with the circular groove, and the bearing is adapted with threaded rod 11, and the sample includes left side
Sample 13 and right side sample 14, one end of the left side sample 13 are glued with one end of right side sample 14, the left side sample 13
The other end and the other end of right side sample 14 contacted with two end side panels 7 respectively, cushion block 15, institute are provided between the adjacent sample
The height for stating cushion block 15 is corresponding with the thickness of sample.The supporting table also includes base 16 and connecting rod 17, the base 16
It is fixedly connected with base plate 6, the one end of the connecting rod 17 is connected with base 16, the other end of the connecting rod 17 is provided with external screw thread, institute
State contiguous block 3 and be provided with the second screwed hole 18 away from the one end of the first screwed hole 4, the connecting rod 17 is by the second screwed hole 18 and even
Connect block 3 to be threadedly coupled, the top of the contiguous block 3 is provided with fixing nut 19 with the corresponding section of the second screwed hole 18.The contiguous block 3
Top is provided with the first nut 20, and the bottom of the contiguous block 3 is provided with the second nut 21, and the nut 21 of first nut 20 and second is equal
Corresponding with the first screwed hole 4, the nut 21 of first nut 20 and second is adapted with threaded rod 11.The threaded rod 11
Top is provided with driving lever 22.Also include sample tweezers, the sample tweezers include the first tweezer bar 23 and the second tweezer bar 24, described first
The one end of tweezer bar 23 is connected with the one end of the second tweezer bar 24, and the other end of the first tweezer bar 23 is provided with the first tweezer first 25, described second
The other end of tweezer bar 24 is provided with the second tweezer first 26, and the top surface of first tweezer first 25 and the bottom surface of the second tweezer first 26 are maintained at one
On horizontal plane.
Claims (5)
1. a kind of novel adhesive tensile shear strength determines specimen mounting, it is characterised in that：Including supporting table, supercharging device, examination
Sample case (1), pressing plate (2) and sample, the supporting table include contiguous block (3), and the contiguous block (3) is provided with the first screwed hole
(4), the sample case (1) includes top board (5), base plate (6), side plate (7) and inner panel (8), and the base plate (6) is fixed with supporting table
Connection, the top board (5) is provided with through hole (9), and inner panel (8) middle part is provided with opening (10), and the supercharging device includes spiral shell
Rasp bar (11), the threaded rod (11) is corresponding with the first screwed hole (4), and the pressing plate (2) is adapted with sample case (1), institute
State pressing plate (2) top and be provided with flange (12), flange (12) top is provided with circular groove, bearing, the axle are provided with the circular groove
Hold and be adapted with threaded rod (11), the sample includes left side sample (13) and right side sample (14), the left side sample (13)
One end of one end and right side sample (14) be glued, the other end of the left side sample (13) and the other end of right side sample (14)
Contacted with two end side panels (7) respectively, cushion block (15), height and the sample of the cushion block (15) are provided between the adjacent sample
Thickness is corresponding.
2. a kind of novel adhesive tensile shear strength determines specimen mounting according to claim 1, it is characterised in that：The branch
Support platform also includes base (16) and connecting rod (17), and the base (16) is fixedly connected with base plate (6), the connecting rod (17)
End is connected with base (16), and connecting rod (17) other end is provided with external screw thread, and the contiguous block (3) is away from the first screwed hole
(4) one end is provided with the second screwed hole (18), and the connecting rod (17) is connected by the second screwed hole (18) and contiguous block (3) screw thread
Connect, contiguous block (3) top is provided with fixing nut (19) with the second screwed hole (18) corresponding section.
3. a kind of novel adhesive tensile shear strength determines specimen mounting according to claim 2, it is characterised in that：The company
Connect block (3) top and be provided with the first nut (20), contiguous block (3) bottom is provided with the second nut (21), first nut
(20) and the second nut (21) is corresponding with the first screwed hole (4), first nut (20) and the second nut (21) with
Threaded rod (11) is adapted.
4. a kind of novel adhesive tensile shear strength determines specimen mounting according to claim 1, it is characterised in that：The spiral shell
Rasp bar (11) top is provided with driving lever (22).
5. a kind of novel adhesive tensile shear strength determines specimen mounting according to claim 1, it is characterised in that：Also include
Sample tweezers, the sample tweezers include the first tweezer bar (23) and the second tweezer bar (24), described first tweezer bar (23) one end and the
Two tweezer bar (24) one end connect, and the other end of the first tweezer bar (23) is provided with the first tweezer head (25), the second tweezer bar (24)
The other end be provided with the second tweezer head (26), the bottom surface of the top surface of the first tweezer head (25) and the second tweezer head (26) is maintained at one
On horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621269670.4U CN206208646U (en) | 2016-11-23 | 2016-11-23 | A kind of novel adhesive tensile shear strength determines specimen mounting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621269670.4U CN206208646U (en) | 2016-11-23 | 2016-11-23 | A kind of novel adhesive tensile shear strength determines specimen mounting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206208646U true CN206208646U (en) | 2017-05-31 |
Family
ID=58746924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621269670.4U Expired - Fee Related CN206208646U (en) | 2016-11-23 | 2016-11-23 | A kind of novel adhesive tensile shear strength determines specimen mounting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206208646U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458907A (en) * | 2018-03-15 | 2018-08-28 | 陕西法士特汽车传动集团有限责任公司 | A kind of synchronizer adhesive strength sample making tooling |
| CN110567810A (en) * | 2019-10-28 | 2019-12-13 | 山东大庚工程材料科技有限公司 | Tensile detection device of grid is moulded to steel |
| CN111551449A (en) * | 2020-05-15 | 2020-08-18 | 沈阳飞机工业（集团）有限公司 | Fixing device for shear strength test sample and using method |
| CN111595700A (en) * | 2020-05-29 | 2020-08-28 | 鞍钢股份有限公司 | Impact test method of low-strength cold-rolled sheet material |
-
2016
- 2016-11-23 CN CN201621269670.4U patent/CN206208646U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458907A (en) * | 2018-03-15 | 2018-08-28 | 陕西法士特汽车传动集团有限责任公司 | A kind of synchronizer adhesive strength sample making tooling |
| CN108458907B (en) * | 2018-03-15 | 2024-06-11 | 陕西法士特汽车传动集团有限责任公司 | Synchronizer bonding strength sample preparation frock |
| CN110567810A (en) * | 2019-10-28 | 2019-12-13 | 山东大庚工程材料科技有限公司 | Tensile detection device of grid is moulded to steel |
| CN111551449A (en) * | 2020-05-15 | 2020-08-18 | 沈阳飞机工业（集团）有限公司 | Fixing device for shear strength test sample and using method |
| CN111595700A (en) * | 2020-05-29 | 2020-08-28 | 鞍钢股份有限公司 | Impact test method of low-strength cold-rolled sheet material |
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Granted publication date: 20170531 Termination date: 20191123 |