CN111521550A - Corrosion coupon clamp for atmospheric exposure environment test - Google Patents
Corrosion coupon clamp for atmospheric exposure environment test Download PDFInfo
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- CN111521550A CN111521550A CN202010182085.5A CN202010182085A CN111521550A CN 111521550 A CN111521550 A CN 111521550A CN 202010182085 A CN202010182085 A CN 202010182085A CN 111521550 A CN111521550 A CN 111521550A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention provides a corrosion coupon clamp for an atmospheric exposure environment test, which belongs to the technical field of natural environment test devices and structurally comprises a base, a stand column on the base, a connecting component and a top cover, wherein the base and the stand column are insulated; a screw rod is fixedly connected in the base, extends out from the center of the lower surface of the base and is fixed on a sample fixing plate strip of the insolation frame by matching with a nut; the base and the top cover are connected through an elastic contraction part or are in threaded connection through the outer extending end in the other direction of the screw rod in the base; the contact surface of the base and the top cover is provided with bulges with uniform size in a staggered way. The invention has simple structure and convenient operation, and can realize the stable clamping of the corrosion hanging pieces with different thicknesses; meanwhile, the contact area of the clamp and the corrosion hanging piece is effectively reduced by the convex point design, and the gap corrosion is avoided.
Description
Technical Field
The invention relates to the technical field of natural environment test devices, in particular to a corrosion coupon clamp for an atmospheric exposure environment test.
Background
The material atmospheric exposure test is a natural environment test, and different materials are directly subjected to the comprehensive action of natural environment factors within a specified time by exposing the corrosion hanging piece of the different materials in the natural atmospheric environment, so that the adaptability and the weather resistance of the material to the weather environment are evaluated. The natural atmosphere exposure environment test can provide guidance for selection and maintenance of materials in related equipment and facilities because the test result is more practical, so the natural atmosphere exposure environment test is valued by the scientific and technological boundary and the industrial department at home and abroad.
When an atmospheric exposure environment test is carried out, the corrosion hanging piece is fixed on an atmospheric exposure frame by a sample clamp, so that the corrosion hanging piece and a horizontal plane form a certain angle to be exposed in the environment. In order to avoid galvanic corrosion, the sample clamp is generally made of insulating materials such as ceramics. Patent document [ CN 208254515U ] discloses a ceramic jig, include stainless steel bolt and press from both sides dress part, press from both sides dress part and include the last porcelain pearl piece of axis coincidence and lower porcelain pearl piece, go up the round platform body of porcelain pearl piece for having the axial center through-hole, lower porcelain pearl piece is the cylinder that has the axial center through-hole, and the stainless steel bolt passes porcelain pearl piece, metal lacing film sample, hole (the rack of insolateing) on lower porcelain pearl piece, the fixed lath of sample in proper order to realize fastening by the nut at the end. The fixture realizes the fixation of the corrosion hanging pieces with different thicknesses, but the number of parts is large, and the fixed installation operation of the corrosion hanging pieces is very inconvenient. Patent document No. CN 208254515U discloses another sample clamp, which is a column, one end of which is installed in a fixing hole on a sample fixing strip of a insolation rack in a bolt connection manner, and the side surface close to the other end is provided with two clamping grooves for fixing samples. This sample anchor clamps simple structure, convenient operation, when specifically fixed, only need with four angles screens of sample respectively in four sample anchor clamps's screens groove, but the size in screens groove has greatly limited the corrosion coupon thickness, and adaptability is poor, and it is big with anchor clamps area of contact to corrode the coupon, induces the crevice corrosion easily, influences the reliability that the atmosphere exposes the environmental test result.
Disclosure of Invention
The invention aims at the defects of the prior art and provides a corrosion coupon clamp for an atmospheric exposure environment test, which has a simple structure and convenient operation and can realize the stable clamping of corrosion coupons with different thicknesses; meanwhile, the contact area between the clamp and the corrosion hanging piece is effectively reduced due to the insulation design, and the crevice corrosion and the galvanic corrosion are avoided. .
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention provides a corrosion coupon clamp for an atmospheric exposure environment test, which comprises: the base is provided with a top cover, the base and the top cover are connected through an upright post, the position of the top cover corresponding to the upright post is hollow, one end of the upright post is connected to the upper surface of the base, the other end of the upright post is sleeved at the hollow position of the lower part of the top cover, the inside of the upper part of the upright post is hollow, an elastic shrinkage component is arranged in the top cover, and the base and the top cover are connected into a whole through the elastic shrinkage component;
the bottom of the base is provided with a insolation frame sample fixing lath, a screw is arranged in the base, the screw extends out of a fixing hole in the insolation frame sample fixing lath, and the end part of the screw fixes the clamp at a selected position through a nut;
when the elastic contraction component is in a free state, the base and the top seat are in a closed contact state, and when the elastic contraction component is in a stretching state, a gap is formed between the top cover and the base and used for clamping the corrosion hanging piece.
Optionally, the protrusions with uniform size are distributed on the contact surface of the base and the top cover in a staggered manner.
Optionally, the convex hemisphere or the conical shape enables the clamp to have only a few contact points when clamping the corrosion hanging piece, thereby effectively avoiding crevice corrosion.
Optionally, the base, the upright post and the top cover are all made of insulating materials, the insulating materials are ceramic or hard engineering plastics, and the base, the upright post and the top cover are convenient to prepare due to the fact that the base is simple in shape and common in material.
Optionally, the base is a cylinder or a cuboid.
Optionally, the height of the upright column is greater than 10 mm, the height meets the thickness requirement of most corrosion hanging pieces, and meanwhile, the internal elastic contraction part can be effectively protected from being influenced by the environment.
Optionally, when the clamp is fixed at the selected position through the nut, an insulating gasket is additionally arranged between the nut and the sample fixing batten of the exposure frame, so that galvanic corrosion caused by the fact that the nut and the exposure frame are made of different materials can be effectively avoided.
Optionally, an elastic wear-resistant substance is attached to the hollow inner wall of the lower portion of the top cover attached to the outer wall of the upright column, and the elastic wear-resistant substance can be adhered to the hollow inner wall of the lower portion of the top cover in a mode of adhering a layer of rubber or embedding an annular rubber ring and the like, so that the friction force between the top cover and the upright column is increased, and the clamp can clamp the corrosion hanging piece more firmly and reliably.
The corrosion coupon clamp for the atmospheric exposure environment test can also be realized in another mode, and comprises: the base is provided with a top cover, the base and the top cover are connected through an upright post, the position of the top cover corresponding to the upright post is hollow, one end of the upright post is connected to the upper surface of the base, and the other end of the upright post is sleeved at the hollow position of the lower part of the top cover;
above-mentioned base bottom is equipped with the fixed lath of rack sample of insolating, and the base internal fixation is equipped with a screw rod, and base lower surface and stand are run through at the screw rod both ends, and the inside position that corresponds the screw rod of top cap is by the screw hole, and both match each other, make the top cap can pass through the screw rod and rotate to inseparable closed condition.
Compared with the prior art, the corrosion coupon clamp for the atmospheric exposure environment test has the beneficial effects that:
the invention has simple structure, fewer parts and convenient fixed clamping and dismounting operation of the corrosion hanging piece; the contact area of the clamp and the corrosion hanging piece is effectively reduced by the aid of the protrusions distributed on the contact surface of the base and the top cover in a staggered mode, and gaps and galvanic corrosion can be avoided by means of the insulation design; the stable clamping of different thickness corrosion hanging pieces can be conveniently realized by the connecting mode between the base and the top cover.
Drawings
In order to more clearly describe the working principle of the corrosion coupon clamp for the atmospheric exposure environment test, a schematic diagram is attached for further explanation.
FIG. 1 is a front view of a first embodiment of the present invention in a state of holding an etching coupon (etching coupon is not shown);
FIG. 2 is a top view of a base according to a first embodiment of the present invention;
FIG. 3 is a cross-sectional view of a first embodiment of the present invention in a state of holding a corrosion coupon (corrosion coupon not shown);
FIG. 4 is a cross-sectional view showing a state where an etching coupon is held according to a second embodiment of the present invention (the etching coupon is not shown).
The reference numerals in the figures denote:
1-a base; 2-upright post; 3-a screw; 4-a top cover; 5-bulge; 6-a nut; 7-a gasket; 8-exposing a rack sample fixing batten; 9-an elastically contractible member; 10-threaded hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 4 in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figure 1, the corrosion coupon clamp for the atmospheric exposure environment test mainly comprises a base 1, an upright post 2 on the base, a screw 3, a nut 6, a gasket 7, an elastic shrinkage component 9 and a top cover 4. Wherein, base 1, stand 2 and top cap 4 material are insulating engineering plastics, avoid anchor clamps and the contact of metal corrosion lacing film to take place galvanic corrosion. In addition, on the contact surface of base 1 and top cap 4, still crisscross distribution has the conical arch 5 of big or small homogeneity, and half is on base 1, and half is on top cap 4, and the corruption lacing film centre gripping has reduced area of contact greatly between the two, avoids the emergence of gap corrosion. And a screw rod 3 extends out of the bottom of the clamp, when the clamp is used, the screw rod 3 penetrates through a fixing hole in a sample fixing batten 8 of the exposure frame, the back surface of the clamp is fixed on a selected position in a bolt mode through a nut 6 and a gasket 7, wherein the gasket 7 is made of insulating engineering plastics, and galvanic corrosion between the nut 6 and the sample fixing batten 8 of the exposure frame is avoided.
As shown in fig. 2, the clamp is cylindrical, a complete circle of conical protrusions 5 are formed at the periphery of the contact surface of the base 1 and the top cover 4 at intervals, the corresponding position of the bottom surface of the top cover 4 is also provided with a circle of conical protrusions 5 (not shown) with the same diameter, but the positions are staggered mutually, so that no matter what angle the clamp is fixed on the fixed batten 8 of the rack sample, the corrosion hanging piece can be clamped conveniently and stably by the aid of the protrusions 5, and the contact area is reduced. In addition, the upright post 2 at the center of the upper surface of the base 1 is cylindrical and hollow inside, and the elastic contraction part 9 is positioned therein.
As shown in fig. 3, the other end of the screw 3 is fixedly connected inside the base 1, and the other end extends out, and the bolt connection mode is adopted to realize the fixing of the clamp base 1 at the selected position on the sample fixing strip 8 of the rack. The bottom of the top cover 4 is hollow corresponding to the upright post 2, and the clamp is completely attached to the upright post 2 in a closed state. The elastic contraction part 9 is positioned in the upright post 2 and is connected with the base 1 and the top cover 4 to ensure that the two are in a tightly closed state when the clamp is not used; when the clamp is used, the base 1 is fixed at a selected position, the top cover 4 of the clamp is directly pulled up, the corrosion hanging pieces are inserted between the base 1 and the top cover 4 and clamped under the action of the elastic shrinkage component 9, and stable clamping of the corrosion hanging pieces with different thicknesses is realized.
A second embodiment of the corrosion coupon clamp for the atmospheric exposure environment test according to the present invention is further described with reference to fig. 4.
The clamp mainly comprises a base 1, an upright post 2 on the base, a screw rod 3, a nut 6, a gasket 7 and a top cover 4. The parts of the second embodiment of the clamp which are the same as those of the first embodiment are not described again, and compared with the first embodiment, the clamp has the main difference that the elastic contraction device 9 is replaced by the extension of the other end of the fixed screw rod 3 in the base 1, and the cover rotates up and down around the screw rod 3 through the internal thread of the top cover 4, thereby realizing the stable clamping of the corrosion hanging pieces with different thicknesses in a bolt fixing mode. As shown in fig. 4, the upper end of the screw rod 3 fixed in the base 1 penetrates through the base 1 and the upright post 2 and extends out from the center of the upper surface of the upright post 2 for a certain distance, and the screw hole 10 is formed in the top cover 4 corresponding to the screw rod 3, and the screw rod 3 and the screw hole are matched with each other, so that the top cover 4 can rotate to a close state through the screw rod 3.
With reference to fig. 4, the threaded hole 10 is non-through, and one side of the top cover top is sealed, so that corrosion of the exposed screw can be avoided; the threaded hole is 15 mm in length, so that the top cover 4 can be screwed outwards for a corresponding distance from a closed state without falling, and stable clamping of corrosion hanging pieces with different thicknesses is realized in a bolt fixing mode. In addition, the distribution and shape of the protrusions 5 on the base 1 are the same as those of the first embodiment, and a circle of conical protrusions 5 (not shown) is also arranged at the corresponding position of the bottom surface of the top cover 4, but the diameter of a circle formed by the protrusions 5 on the top cover 4 is slightly smaller than that of the base 1, and the positions of the circles are staggered in the radial direction, so that the top cover 4 can rotate to the bottom conveniently. In addition, the column 2 must be cylindrical, either hollow (similar to the first clamp) or solid, with the interior of the column being fixedly connected to the screw 3.
The present invention is not limited to the above two embodiments, and those skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
In addition to the technical features described in the specification, the technology is known to those skilled in the art.
Claims (10)
1. The utility model provides an atmosphere exposes experimental corruption lacing film anchor clamps which characterized in that, this anchor clamps include: the base comprises a base (1), wherein a top cover (4) is arranged above the base (1), the base (1) and the top cover (4) are connected through an upright post (2), the top cover (4) and the upright post (2) are hollow at corresponding positions, one end of the upright post (2) is connected to the upper surface of the base (1), the other end of the upright post (2) is sleeved at the hollow position at the lower part of the top cover (4), the upper part of the upright post (2) is hollow, an elastic contraction component (9) is arranged in the top cover (4), and the base (1) and the top cover (4) are connected into a whole through the elastic contraction component;
the bottom of the base (1) is provided with a insolation frame sample fixing lath (8), a screw (3) is arranged in the base (1), the screw (3) extends out of a fixing hole on the insolation frame sample fixing lath (8), and the end part of the screw (3) fixes the clamp at a selected position through a nut (6);
when the elastic contraction part (9) is in a free state, the base (1) and the top seat are in a closed contact state, and when the elastic contraction part (9) is in a stretching state, a gap is formed between the top cover (4) and the base (1) and used for clamping the corrosion hanging piece.
2. The atmospheric exposure environment test corrosion coupon clamp of claim 1, wherein the protrusions (5) with uniform size are distributed on the contact surface of the base (1) and the top cover (4) in a staggered manner.
3. An atmospheric exposure environment test corrosion coupon clamp according to claim 2, wherein said protrusions (5) are hemispherical or conical.
4. The atmospheric exposure environment test corrosion coupon clamp of claim 1, 2 or 3, wherein the base (1), the upright column (2) and the top cover (4) are made of insulating materials.
5. The atmospheric exposure environment test corrosion coupon clamp of claim 1, 2 or 3, wherein the insulating material is ceramic or hard engineering plastic.
6. An atmospheric exposure environment test corrosion coupon clamp according to claim 1, 2 or 3, wherein the base (1) is a cylinder or a cuboid.
7. An atmosphere exposure environment test corrosion coupon clamp according to claim 1, 2 or 3, wherein the height of the upright column (2) is more than 10 mm.
8. The atmospheric exposure environment test corrosion coupon clamp of claim 1, 2 or 3, wherein an insulating gasket (7) is additionally arranged between the nut (6) and the insolation rack sample fixing strip (8).
9. The atmospheric exposure environment test corrosion coupon clamp of claim 1, 2 or 3, wherein the hollow inner wall of the lower part of the top cover (4) attached to the outer wall of the upright post (2) is adhered with an elastic wear-resistant substance.
10. The utility model provides an atmosphere exposes experimental corruption lacing film anchor clamps which characterized in that, this anchor clamps include: the device comprises a base (1), wherein a top cover (4) is arranged above the base (1), the base (1) and the top cover (4) are connected through an upright post (2), the position of the top cover (4) corresponding to the upright post (2) is hollow, one end of the upright post (2) is connected to the upper surface of the base (1), and the other end of the upright post (2) is sleeved at the hollow position of the lower part of the top cover (4);
above-mentioned base (1) bottom is equipped with insolate frame sample fixed lath (8), and base (1) internal fixation is equipped with a screw rod (3), and base (1) lower surface and stand (2) are run through at screw rod (3) both ends, and top cap (4) inside corresponds the position of screw rod (3) and is by screw hole (10), and both match each other, make top cap (4) can rotate to inseparable closed state through screw rod (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010182085.5A CN111521550A (en) | 2020-03-16 | 2020-03-16 | Corrosion coupon clamp for atmospheric exposure environment test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010182085.5A CN111521550A (en) | 2020-03-16 | 2020-03-16 | Corrosion coupon clamp for atmospheric exposure environment test |
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| Publication Number | Publication Date |
|---|---|
| CN111521550A true CN111521550A (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010182085.5A Pending CN111521550A (en) | 2020-03-16 | 2020-03-16 | Corrosion coupon clamp for atmospheric exposure environment test |
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| CN (1) | CN111521550A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112461739A (en) * | 2020-11-11 | 2021-03-09 | 中国兵器工业第五九研究所 | Natural environment testing device for large columnar sample and using method |
| CN113740240A (en) * | 2021-09-09 | 2021-12-03 | 中国石油化工股份有限公司 | Corrosion inhibition performance testing device and method of corrosion inhibitor and application |
| CN114264591A (en) * | 2021-12-23 | 2022-04-01 | 中国兵器工业第五九研究所 | Device and method for evaluating corrosion appearance of metal standard part |
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| CN104369010A (en) * | 2013-08-13 | 2015-02-25 | 珠海格力电器股份有限公司 | Clamping device |
| US20180031794A1 (en) * | 2016-07-29 | 2018-02-01 | Hubbell Incorporated | Spring assist cable clamps |
| CN207589095U (en) * | 2017-12-28 | 2018-07-06 | 深圳市雅乐电子有限公司 | A kind of speaker wiring board fixing device |
| CN207730977U (en) * | 2017-12-21 | 2018-08-14 | 广东金木水火土实业有限公司 | A kind of optical fiber splicer |
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2020
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|---|---|---|---|---|
| CN202622565U (en) * | 2012-07-11 | 2012-12-26 | 哈尔滨汽轮机厂有限责任公司 | Grinding clamp of blade lacing wire |
| CN104369010A (en) * | 2013-08-13 | 2015-02-25 | 珠海格力电器股份有限公司 | Clamping device |
| US20180031794A1 (en) * | 2016-07-29 | 2018-02-01 | Hubbell Incorporated | Spring assist cable clamps |
| CN207730977U (en) * | 2017-12-21 | 2018-08-14 | 广东金木水火土实业有限公司 | A kind of optical fiber splicer |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112461739A (en) * | 2020-11-11 | 2021-03-09 | 中国兵器工业第五九研究所 | Natural environment testing device for large columnar sample and using method |
| CN112461739B (en) * | 2020-11-11 | 2022-09-27 | 中国兵器工业第五九研究所 | Natural environment testing device for large columnar sample and using method |
| CN113740240A (en) * | 2021-09-09 | 2021-12-03 | 中国石油化工股份有限公司 | Corrosion inhibition performance testing device and method of corrosion inhibitor and application |
| CN113740240B (en) * | 2021-09-09 | 2023-11-14 | 中国石油化工股份有限公司 | Corrosion inhibition performance testing device and method for corrosion inhibitor and application |
| CN114264591A (en) * | 2021-12-23 | 2022-04-01 | 中国兵器工业第五九研究所 | Device and method for evaluating corrosion appearance of metal standard part |
| CN114264591B (en) * | 2021-12-23 | 2023-05-12 | 中国兵器工业第五九研究所 | Device and method for evaluating corrosion appearance of metal standard part |
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