CN111157449B - Auxiliary clamp for bonding strength test sample of bonding coating - Google Patents
Auxiliary clamp for bonding strength test sample of bonding coating Download PDFInfo
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- CN111157449B CN111157449B CN202010060096.6A CN202010060096A CN111157449B CN 111157449 B CN111157449 B CN 111157449B CN 202010060096 A CN202010060096 A CN 202010060096A CN 111157449 B CN111157449 B CN 111157449B
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- clamp
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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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
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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
- G01N1/44—Sample treatment involving radiation, e.g. heat
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
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- 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 invention discloses an auxiliary clamp for a bonding strength test sample of a bonding coating, which comprises a base (1), wherein a fixing bolt (2) for fixing a bonding test sample is arranged in the base (1); a clamp (4) is arranged above the base (1), and the clamp (4) is connected with the base (1) through a connecting rod (3); the fixture (4) comprises two fixture main bodies, two ends of each fixture main body are connected through a hinge structure (10) and a buckle structure (9), and the interior of the fixture (4) is in contact with a sample. The device is fixed by the clamp and the fixing bolt, so that the verticality is ensured, the central axes of the test sample and the butt joint sample are consistent, the pressure of each part of the surface bonding surface is consistent during curing, the bonding success rate of the manufactured test sample is improved, the quality of the bonding surface is improved, the process is simplified, and the efficiency is improved.
Description
Technical Field
The invention relates to a clamp, in particular to an auxiliary clamp for a bonding strength test sample of a bonding coating.
Background
The surface thermal spraying technology is widely applied, the performance of the coating is directly related to the quality of the product, and the important performance index of the coating is the bonding strength of the coating. When testing the bonding strength of the coating, a test sample sprayed with the coating and a butt-joint sample need to be bonded into a cylinder through an adhesive, then heated and cured in an oven, and finally a tensile test is carried out on a universal testing machine. The coating bond strength is calculated as the following equation (1):
in the formula: sigma-coating bond strength (Pa)
P-specimen breaking load (N)
S-coating surface area (m)2)
The test sample and the butt-joint sample need to be heated and cured in an oven for a period of time in the bonding process, and during the period, the test sample and the butt-joint sample tend to generate relative slippage due to the action of the bonding glue, so that the actual bonding area S is causedPractice ofBecomes smaller than the theoretical calculated area SComputing(ii) a Moreover, the central axes of the test sample and the butt sample are deviated, so that the centering tension is changed into the eccentric tension, and the test sample can be broken under the action of a small tensile breaking load P. Both of these factors result in a measured coating bond strength σMeasuringLess than the actual bond strength sigma of the coatingFruit of Chinese wolfberryThe two factors are added to have a larger influence on the determination of the bonding strength of the coating.
The clamps currently used are generally made in a cylindrical shape and fastened by bolts and nuts. The clamp is generally made of steel or cast iron, is very heavy, is not easy to operate, has large volume, can only be bonded and dried one sample at a time, and has extremely low efficiency; the test sample manufactured during bonding is horizontally placed, so that bonding glue is easy to flow out during use, and the manufactured test sample is bonded with the clamp and is not easy to take down; in addition, because the clamp is fixed by four bolts, the tightness degree of each bolt can cause the bonding directionality of the manufactured test sample due to uneven stress in the curing process, thereby influencing the coating test. In further detection, no literature report which is the same as the original idea of the invention patent is found.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an auxiliary clamp for a bonding strength test sample of a bonding coating. Through anchor clamps and fixing bolt are fixed, guarantee the straightness that hangs down, can realize that test appearance is unanimous with butt joint appearance the central axis, and each partial pressure of surface bonding face is unanimous when the solidification, improves the success rate that the test appearance that makes bonds, promotes the quality of bonding face to can simplify the process, raise the efficiency.
In order to solve the technical problem, the invention provides an auxiliary clamp for a bonding strength test sample of a bonding coating, which comprises a base, wherein a fixing bolt for fixing a bonding test sample is arranged in the base; a clamp is arranged above the base, and the clamp is connected with the base through a connecting rod; the fixture comprises two fixture main bodies, two ends of each fixture main body are connected through a hinge structure and a buckle structure respectively, and the interior of the fixture is in contact with a sample.
Furthermore, the buckle structure comprises a buckle, the first clamp body is hinged with one end of the buckle through a connecting piece, and the second clamp body is hinged with the other end of the buckle; the second clamp body is provided with a clamping hook, and the clamping hook is provided with a hollow hole matched with the clamping hook.
Furthermore, at least two connecting rods are arranged, and each connecting rod comprises a rod part and a fixing bulge arranged at the lower end of the rod part; the base is provided with at least two L-shaped grooves matched with the fixing bulges, the upper end of the connecting rod is fixedly connected with the clamp, and the fixing bulges at the lower end of the connecting rod are clamped into the L-shaped grooves of the base.
Furthermore, the junction of two anchor clamps main part one end of anchor clamps is equipped with the connection rotation axis, and the top and the bottom of connecting the rotation axis are equipped with hinge structure respectively in order to fix two anchor clamps main parts, make two anchor clamps main parts can the pivoting.
Further, the outer shape of the clamp is hexagonal and comprises two half hexagonal main bodies; the inside of the clamp in contact with the sample is circular.
Further, the width of the vertical part of the L-shaped groove is greater than that of the rod part of the connecting rod; the height of the horizontal part of the L-shaped groove is equal to that of the fixing bulge of the connecting rod.
Furthermore, the auxiliary clamp is made of glass fiber reinforced resin matrix composite materials.
The invention achieves the following beneficial effects: through the fixing of anchor clamps and fixing bolt, guarantee the straightness that hangs down, can realize that test appearance is unanimous with butt joint appearance the central axis, each partial pressure of surface bonding face is unanimous when the solidification, improves the success rate that the test appearance that makes bonds, promotes the face quality that bonds to can simplify the process, raise the efficiency. The invention has simple structure, convenient use, economy and environmental protection. The centering bonding of the test sample and the butt joint sample can be ensured during use, the verticality can be kept unchanged during bonding, the test success rate and efficiency are greatly improved, and the phenomenon that the sample is bonded on a die by a bonding agent to cause sample scrapping is avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a connecting rod of the present invention;
FIG. 3 is a schematic structural view of an L-shaped groove of the present invention;
FIG. 4 is a schematic view of the structure of the clamp of the present invention;
FIG. 5 is a schematic structural view of a main body portion of the clamp of the present invention;
FIG. 6 is a schematic view of the main body of the clamp of the present invention connected to a rotating shaft;
FIG. 7 is a schematic view of a clip snap of the present invention.
In the figure: 1-a base; 2-fixing the bolt; 3-a connecting rod; 4-clamping; 41-a first clamp body; 42-a second clamp body; 5-a rod part; 6-fixing the bulge; 7-L-shaped grooves; 8-connecting the rotating shaft; 9-a buckle structure; 91-buckling; 92-connecting pieces; 93-hook; 94-hollowed out holes; 95-first hinge region; 96-a second hinge region; 10-hinge structure.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in figure 1, the auxiliary clamp for the bonding strength test sample of the bonding coating comprises a base 1, wherein a fixing bolt 2 for fixing the bonding test sample is arranged in the base 1, and the to-be-bonded test sample is screwed and fixed on the fixing bolt 2 during use. And a clamp 4 is arranged above the base 1, and the clamp 4 is connected with the base 1 through a connecting rod 3. As shown in fig. 4 and 5, the external shape of the clamp 4 is hexagonal and comprises two half-hexagonal main bodies; the inner part of the clamp 4 contacting the sample is circular. Two half hexagon anchor clamps main parts both ends are connected through hinge structure 10 and buckle structure 9 respectively, anchor clamps 4 inside and sample contact.
As shown in fig. 2 and 3, at least two connecting rods 3 are provided, and each connecting rod 3 comprises a rod part 5 and a fixing protrusion 6 arranged at the lower end of the rod part 5; be equipped with on base 1 at least two with fixed bulge 6 matched with L type recess 7, connecting rod 3 upper end and anchor clamps 4 fixed connection, fixed bulge 6 card of connecting rod 3 lower extreme is gone into in base 1's L type recess 7. The width of the vertical part of the L-shaped groove 7 is larger than that of the rod part 5 of the connecting rod 3; the height of the horizontal part of the L-shaped groove 7 is equal to that of the fixing protrusion 6 of the connecting rod 3. When the hexagonal fixture is used, the fixing protrusions 6 are put down along the vertical parts of the L-shaped grooves 7, and are clamped by clockwise rotation after being put to the bottom, so that the hexagonal fixture 4 and the base 1 are connected into a whole.
As shown in fig. 6, a connection rotation shaft 8 is disposed at a connection position of one ends of the two clamp bodies of the clamp 4, and hinge structures 10 are respectively disposed at the top and the bottom of the connection rotation shaft 8 to fix the two clamp bodies so that the two clamp bodies can rotate around a shaft.
As shown in fig. 7, the buckle structure 9 includes a buckle 91, the first clamp body 41 is hinged to one end of the buckle 91 through a connecting piece 92, and the second clamp body 42 is hinged to the other end of the buckle 91; the second clamp body 42 is provided with a hook 93, and the buckle 91 is provided with a hollow hole 94 matched with the hook 93. The butt joint sample is placed into a circular inner hole of the clamp, the buckle 91 is shifted to the clamping hook 93, the buckle 91 rotates around the first hinge part 95, the connecting sheet 92 and the buckle 91 rotate around the second hinge part 96 relatively, the first clamp body 41 and the connecting sheet 92 can rotate forwards along with the buckle 91, meanwhile, the first clamp body 41 and the second clamp body 42 can abut against each other, the two half hexagons contract inwards, the butt joint sample clamped in the butt joint sample is fastened, and the hollow hole 94 in the buckle 91 can be hooked by the clamping hook 93 to achieve the purpose of fixing. The loosening can be realized by only shifting in the opposite direction. The hinge structure 10 in fig. 6 can only rotate around the connecting rotation shaft 8, and can cooperatively rotate when the buckle 91 is pulled, so that the purpose of enlarging or shrinking the circular inner hole of the clamp is achieved.
The invention fully considers the problems possibly generated in the bonding process and optimizes the bonding conditions of the sample. The auxiliary clamp for the bonding strength test sample of the bonding coating is simple in structure, convenient to use, economical and environment-friendly. The centering bonding of the test sample and the butt joint sample can be ensured during use, the verticality can be kept unchanged during bonding, the test success rate and efficiency are greatly improved, and the phenomenon that the sample is bonded on a die by a bonding agent to cause sample scrapping is avoided.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (5)
1. An auxiliary clamp for a bonding strength test sample of a bonding coating is characterized by comprising a base (1), wherein a fixing bolt (2) for fixing a bonding test sample is arranged in the base (1); a clamp (4) is arranged above the base (1), and the clamp (4) is connected with the base (1) through a connecting rod (3); the clamp (4) comprises two clamp main bodies, two ends of the two clamp main bodies are respectively connected through a hinge structure (10) and a buckle structure (9), and the interior of the clamp (4) is in contact with a sample; the clamping structure (9) comprises a clamp (91), a first clamp main body (41) is hinged with one end of the clamp (91) through a connecting sheet (92), and a second clamp main body (42) is hinged with the other end of the clamp (91); a clamping hook (93) is arranged on the second clamp main body (42), and a hollow hole (94) matched with the clamping hook (93) is formed in the buckle (91); the connecting part of one ends of the two clamp main bodies of the clamp (4) is provided with a connecting rotating shaft (8), and the top and the bottom of the connecting rotating shaft (8) are respectively provided with a hinge structure (10) for fixing the two clamp main bodies, so that the two clamp main bodies can rotate around a shaft.
2. The auxiliary fixture for the bond strength test sample of the bond coating as claimed in claim 1, wherein there are at least two connecting rods (3), and the connecting rod (3) comprises a rod part (5) and a fixing bulge (6) arranged at the lower end of the rod part (5); be equipped with on base (1) at least two with fixed bulge (6) matched with L type recess (7), connecting rod (3) upper end and anchor clamps (4) fixed connection, fixed bulge (6) the card of connecting rod (3) lower extreme is gone into in L type recess (7) of base (1).
3. The auxiliary fixture for bond strength test specimen of bond coating as claimed in claim 1, wherein said fixture (4) is hexagonal in external shape, comprising two half hexagonal bodies; the inner part of the clamp (4) contacting with the sample is circular.
4. The auxiliary fixture for bond strength test specimen of bond coating as claimed in claim 2, wherein the width of the vertical part of the L-shaped groove (7) is larger than the width of the rod part (5) of the connecting rod (3); the height of the horizontal part of the L-shaped groove (7) is equal to that of the fixing bulge (6) of the connecting rod (3).
5. The auxiliary fixture for bond strength test specimen of bond coating as claimed in claim 1, wherein the auxiliary fixture is made of glass fiber reinforced resin matrix composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010060096.6A CN111157449B (en) | 2020-01-19 | 2020-01-19 | Auxiliary clamp for bonding strength test sample of bonding coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010060096.6A CN111157449B (en) | 2020-01-19 | 2020-01-19 | Auxiliary clamp for bonding strength test sample of bonding coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111157449A CN111157449A (en) | 2020-05-15 |
| CN111157449B true CN111157449B (en) | 2021-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010060096.6A Active CN111157449B (en) | 2020-01-19 | 2020-01-19 | Auxiliary clamp for bonding strength test sample of bonding coating |
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| Country | Link |
|---|---|
| CN (1) | CN111157449B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808654A (en) * | 2013-10-31 | 2014-05-21 | 青岛林川工程技术咨询有限公司 | Device and method for testing interlaminar joint strength of pavement layers |
| CN104149056A (en) * | 2014-08-13 | 2014-11-19 | 黑龙江科技大学 | Pressure container clamp and clamping method |
| CN205228938U (en) * | 2015-12-24 | 2016-05-11 | 河北工业大学 | Special fixture of accurate control hot spraying coating bonding strength test piece axiality |
| CN205656067U (en) * | 2016-05-16 | 2016-10-19 | 扬州大学 | Tensile anchor clamps of circular cross section test piece universal tester |
| CN206618607U (en) * | 2017-02-14 | 2017-11-07 | 广东省新材料研究所 | A kind of fixture for prepares coating bond strength test sample |
| CN208297247U (en) * | 2018-06-28 | 2018-12-28 | 四川省建筑科学研究院 | A kind of sqtructural adhesive is just drawing adhesion strength detection fixture |
| CN209868311U (en) * | 2019-05-15 | 2019-12-31 | 江阴市高拓精密模具有限公司 | Clamping piece device of grinding die |
-
2020
- 2020-01-19 CN CN202010060096.6A patent/CN111157449B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808654A (en) * | 2013-10-31 | 2014-05-21 | 青岛林川工程技术咨询有限公司 | Device and method for testing interlaminar joint strength of pavement layers |
| CN104149056A (en) * | 2014-08-13 | 2014-11-19 | 黑龙江科技大学 | Pressure container clamp and clamping method |
| CN205228938U (en) * | 2015-12-24 | 2016-05-11 | 河北工业大学 | Special fixture of accurate control hot spraying coating bonding strength test piece axiality |
| CN205656067U (en) * | 2016-05-16 | 2016-10-19 | 扬州大学 | Tensile anchor clamps of circular cross section test piece universal tester |
| CN206618607U (en) * | 2017-02-14 | 2017-11-07 | 广东省新材料研究所 | A kind of fixture for prepares coating bond strength test sample |
| CN208297247U (en) * | 2018-06-28 | 2018-12-28 | 四川省建筑科学研究院 | A kind of sqtructural adhesive is just drawing adhesion strength detection fixture |
| CN209868311U (en) * | 2019-05-15 | 2019-12-31 | 江阴市高拓精密模具有限公司 | Clamping piece device of grinding die |
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| Publication number | Publication date |
|---|---|
| CN111157449A (en) | 2020-05-15 |
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