CN106908377B - Sample support for pre-corrosion test - Google Patents
Sample support for pre-corrosion test Download PDFInfo
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- CN106908377B CN106908377B CN201710253543.8A CN201710253543A CN106908377B CN 106908377 B CN106908377 B CN 106908377B CN 201710253543 A CN201710253543 A CN 201710253543A CN 106908377 B CN106908377 B CN 106908377B
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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
- G01N17/04—Corrosion probes
- G01N17/043—Coupons
- G01N17/046—Means for supporting or introducing coupons
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Abstract
A sample support for a pre-corrosion test comprises a bottom plate, a basic support frame, a plate sample support frame and a bar sample support frame; the bottom plate is provided with a positioning distance-adjusting jack, the bottom of the basic support frame is provided with a positioning distance-adjusting insert block, and the positioning distance-adjusting insert block and the basic support frame are inserted and assembled; the top parts of the basic support frame, the plate sample support frame and the bar sample support frame are respectively provided with a sample support frame positioning jack, and the bottom parts of the plate sample support frame and the bar sample support frame are respectively provided with a sample support frame positioning insertion block which are inserted and assembled; a plurality of plate sample clamping grooves are formed in the plate sample supporting frame; a plurality of bar sample clamping grooves are formed in the bar sample support frame; the two parallel basic supporting frames are inserted on the bottom plate through respective positioning distance-adjusting inserting blocks, and the distance between the two basic supporting frames is matched with the length of the sample; the number of the plate sample supporting frames and the number of the bar sample supporting frames are a plurality of, and the plurality of plate sample supporting frames and the bar sample supporting frames are inserted on the basic supporting frames in a single type or mixed type multilayer stacking mode.
Description
Technical Field
The invention belongs to the technical field of pre-corrosion tests, and particularly relates to a sample support for a pre-corrosion test.
Background
The metal corrosion refers to the phenomenon that the metal surface and surrounding medium are subjected to chemical or electrochemical action to damage the metal, and the metal corrosion phenomenon is very serious in hazard in various fields of national economy.
In actual service of metal materials, corrosion pre-damage is common, structural metal materials bear fatigue cyclic load and interact with corrosion media in the environment, and most common is the fatigue behavior of the metal materials after corrosion pre-damage, and the fatigue behavior of the metal materials after corrosion pre-damage not only consumes a large amount of metal materials, but also greatly influences the service life of the materials in service while wasting metal resources, so that equipment fails prematurely, even disastrous accidents are caused and personal safety is endangered in serious cases.
In the service process of the metal material, the corrosion problem has become an important factor influencing the fatigue performance of the material, so that the fatigue performance after the corrosion pre-damage of the material is evaluated to be one of important contents of the fatigue performance test of the metal material, and the reasonable simulation of the corrosion pre-damage of the metal material is very important. In the normal case, the material corrosion pre-damage fatigue performance test is to perform an accelerated pre-corrosion test on a pre-processed sample, and then perform the fatigue performance test. The corrosion pre-damage degree of the metal material depends on the material itself, the characteristics of the corrosion medium, the environmental conditions and the changed relative properties, and the common practice of accelerating the pre-corrosion test is to fully immerse the sample in a corrosion solution configured in a laboratory or a corrosion medium taken from a site, and then perform a certain time of corrosion.
In the accelerated pre-corrosion test, the test sample needs to be fully contacted with the corrosion medium, and the test sample needs to be stacked and placed usually, but the traditional stacking and placing mode can lead to too small test sample interval, so that the uniform contact between the surface of the test sample and the corrosion medium can not be ensured, and the test sections of the test sample can be contacted with each other, thereby causing unnecessary physical damage. In order to solve the problem of sample placement in the accelerated pre-corrosion test, technicians have designed a number of brackets for sample placement, but the brackets still have more or less defects at present.
(1) The Chinese patent with publication number of CN2672645 discloses a test piece rest which is mainly used for a salt spray test box, and the test piece rest is formed by connecting a bracket, a rotatable test piece rest body and a positioning piece, but the number of the test pieces which can be placed by the test piece rest is too small to perform a pre-corrosion test on a large number of test pieces.
(2) The Chinese patent with publication number of CN202159008U discloses a test piece support for corrosion test, which is mainly used for corrosion test of important corrosion parts of petrochemical equipment, the test piece support consists of mounting plates at two ends, connecting rods between plates and isolating rings on the connecting rods, and the shape of the test piece support is limited and cannot be used for placing fatigue test pieces although a large number of test pieces can be placed on the test piece support.
(3) The Chinese patent with publication number of CN102954929A discloses a test piece support for corrosion test, which consists of a circular ring, a supporting rod, a hanging piece rod and a nut, and is suitable for samples with various sizes through a hanging structure, but the samples are unstable in fixation due to a hanging mode, and are easy to collide with each other, so that serious physical damage interference is caused to the samples.
Therefore, it is necessary to design a sample holder which can satisfy the requirements of a large number of samples to be placed, no limitation of the shape of the samples, and good stability of the samples to be placed, and which is used for testing the corrosion pre-damage and fatigue performance of the metal material.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides the sample bracket for the pre-corrosion test, which can simultaneously meet the requirements of large sample placement quantity, unlimited sample shape and good sample placement stability, and provides stable pre-corrosion damage assessment for metal material corrosion pre-damage and fatigue performance test.
In order to achieve the above purpose, the present invention adopts the following technical scheme: a sample support for a pre-corrosion test comprises a bottom plate, a basic support frame, a plate sample support frame and a bar sample support frame; a row of equidistant positioning and distance-adjusting jacks are formed in the bottom plate, positioning and distance-adjusting plug blocks are arranged at the bottom of the basic support frame, and the positioning and distance-adjusting plug blocks on the basic support frame are in plug-in fit with the positioning and distance-adjusting jacks on the bottom plate; sample support frame positioning jacks are formed in the top of the basic support frame, the top of the plate sample support frame and the top of the bar sample support frame; the bottom of the plate sample support and the bottom of the bar sample support are respectively provided with a sample support positioning insert block, and the sample support positioning insert holes are assembled with the sample support positioning insert blocks in an inserting way.
A plurality of plate sample clamping grooves are formed in the plate sample supporting frame at equal intervals.
The spacing between adjacent plate sample clamping grooves is not less than 5mm.
A plurality of bar sample clamping grooves are formed in the bar sample supporting frame at equal intervals.
The spacing between adjacent bar sample clamping grooves is not less than 10mm.
The number of the basic supporting frames is two, the two basic supporting frames are arranged in parallel, and the two basic supporting frames are inserted on the bottom plate through respective positioning distance-adjusting inserting blocks, and the distance between the two basic supporting frames is matched with the length of the sample.
The number of the plate sample supporting frames and the number of the bar sample supporting frames are multiple, the plate sample supporting frames and the bar sample supporting frames are inserted on the foundation supporting frames in a single type multilayer stacking mode, or the plate sample supporting frames and the bar sample supporting frames are inserted on the foundation supporting frames in a mixed type multilayer stacking mode.
The invention has the beneficial effects that:
compared with the prior art, the method can simultaneously meet the requirements of large sample placement quantity, unlimited sample shape and good sample placement stability, and provides stable pre-corrosion damage assessment for metal material corrosion pre-damage and fatigue performance test.
Drawings
FIG. 1 is a schematic view of a sample holder (two stacked plates of samples) for pre-corrosion testing according to the present invention;
FIG. 2 is a schematic view of the structure of a sample holder (two layers of bar samples stacked together) for pre-corrosion test according to the present invention;
FIG. 3 is a schematic view of the structure of a sample holder (two layers of mixed samples are stacked together) for pre-corrosion test according to the present invention;
FIG. 4 is a schematic view of the structure of the base plate of the present invention;
FIG. 5 is a schematic view of a basic support frame structure according to the present invention;
FIG. 6 is a schematic view of a plate sample support frame according to the present invention;
FIG. 7 is a schematic view of the bar sample support frame structure of the present invention;
in the figure, 1-bottom plate, 2-basic support frame, 3-panel sample support frame, 4-bar sample support frame, 5-location distance-adjusting jack, 6-location distance-adjusting insert block, 7-sample support frame location jack, 8-sample support frame location insert block, 9-panel sample draw-in groove, 10-bar sample draw-in groove, 11-panel sample, 12-bar sample.
Detailed Description
The invention will now be described in further detail with reference to the drawings and to specific examples.
As shown in fig. 1 to 7, a sample support for pre-corrosion test comprises a bottom plate 1, a basic support frame 2, a plate sample support frame 3 and a bar sample support frame 4; a row of equidistant positioning and distance-adjusting jacks 5 are formed in the bottom plate 1, positioning and distance-adjusting plug blocks 6 are arranged at the bottom of the basic support frame 2, and the positioning and distance-adjusting plug blocks 6 on the basic support frame 2 are in plug-in fit with the positioning and distance-adjusting jacks 5 on the bottom plate 1; sample support frame positioning jacks 7 are respectively formed at the top of the basic support frame 2, the top of the plate sample support frame 3 and the top of the bar sample support frame 4; sample support frame positioning insertion blocks 8 are arranged at the bottoms of the plate sample support frame 3 and the bar sample support frame 4, and the sample support frame positioning insertion holes 7 are in insertion fit with the sample support frame positioning insertion blocks 8.
A plurality of plate sample clamping grooves 9 are formed in the plate sample supporting frame 3 at equal intervals.
The spacing between adjacent plate sample clamping grooves 9 is not less than 5mm. After the plate sample 11 is mounted on the plate sample support frame 3, a larger gap is formed between the plate samples 11, so that all the plate samples 11 can be fully contacted with corrosive medium, and collision between the plate samples 11 can be avoided, and physical damage caused by collision is prevented.
A plurality of bar sample clamping grooves 10 are formed in the bar sample supporting frame 4 at equal intervals.
The spacing between adjacent bar sample clamping grooves 10 is not less than 10mm. After the bar samples 12 are mounted on the bar sample support frame 4, a larger gap is formed between the bar samples 12, so that all the bar samples 12 can be fully contacted with corrosive medium, and collision between the bar samples 12 can be avoided, and physical damage caused by collision is prevented.
The number of the basic supporting frames 2 is two, the two basic supporting frames 2 are arranged in parallel, the two basic supporting frames 2 are inserted on the bottom plate 1 through respective positioning distance-adjusting insertion blocks 6, and the distance between the two basic supporting frames 2 is matched with the length of a sample. When the length dimension of the sample changes, the sample installation under the corresponding dimension can be satisfied by only adjusting the distance between the two basic supporting frames 2.
The number of the plate sample supporting frames 3 and the number of the bar sample supporting frames 4 are several, the plurality of plate sample supporting frames 3 and the bar sample supporting frames 4 are inserted on the foundation supporting frame 2 in a single type multilayer stacking mode, or the plurality of plate sample supporting frames 3 and the bar sample supporting frames 4 are inserted on the foundation supporting frame 2 in a mixed type multilayer stacking mode. When adopting the multilayer to pile up, the sample support frame of upper strata can also play the effect of compaction stability to lower floor's sample, through the multilayer pile up simultaneously, can accomplish the installation of more samples once to the efficiency of pre-corrosion test has been improved.
In this embodiment, the bottom plate 1, the base support 2, the plate sample support 3 and the bar sample support 4 used to form the sample support may be made of a corrosion resistant material such as polyethylene, polytetrafluoroethylene or polypropylene.
In the embodiment, the positioning and distance-adjusting jack 5 adopts a rectangular jack, and the positioning and distance-adjusting plug 6 matched with the rectangular jack adopts a rectangular plug; the sample support frame positioning jack 7 adopts a circular jack, and the sample support frame positioning plug 8 matched with the circular jack adopts a cylindrical plug.
In this embodiment, the number of the plate sample clamping grooves 9 on the plate sample support frame 3 is 19, that is, 19 plate samples 11 can be installed on each pair of plate sample support frames 3 at the same time; the number of the bar sample clamping grooves 10 on the bar sample support frames 4 is 9, namely 9 bar samples 12 can be simultaneously installed on each pair of bar sample support frames 4.
As shown in fig. 1, only the type of the plate sample 11 is mounted in the sample holder, and the plate sample holders 3 are stacked in two layers in total.
As shown in fig. 2, only the type of bar sample 12 is mounted in the sample holder, and the bar sample holders 4 are stacked three layers in total, and in particular, the bar sample holders 4 of the third layer are used only for compacting and stabilizing the bar sample 12 of the upper layer, on which the bar sample 12 is not placed.
As shown in fig. 3, two types of samples, namely, a plate sample 11 and a bar sample 12, are simultaneously installed in the sample holder, and the plate sample holder 3 and the bar sample holder 4 are stacked three layers in total, the bar sample 12 is located in the lower layer of the plate sample 11, and particularly, the bar sample holder 4 of the third layer is only used for compacting and stabilizing the plate sample 11 of the upper layer, and the bar sample 12 is not placed thereon.
The embodiments are not intended to limit the scope of the invention, but rather are intended to cover all equivalent implementations or modifications that can be made without departing from the scope of the invention.
Claims (1)
1. The utility model provides a sample support for pre-corrosion test which characterized in that: the device comprises a bottom plate, a basic supporting frame, a plate sample supporting frame and a bar sample supporting frame; a row of equidistant positioning and distance-adjusting jacks are formed in the bottom plate, positioning and distance-adjusting plug blocks are arranged at the bottom of the basic support frame, and the positioning and distance-adjusting plug blocks on the basic support frame are in plug-in fit with the positioning and distance-adjusting jacks on the bottom plate; sample support frame positioning jacks are formed in the top of the basic support frame, the top of the plate sample support frame and the top of the bar sample support frame; sample support frame positioning insertion blocks are arranged at the bottoms of the plate sample support frame and the bar sample support frame, and the sample support frame positioning insertion holes are in insertion fit with the sample support frame positioning insertion blocks; a plurality of plate sample clamping grooves are formed in the plate sample supporting frame at equal intervals; the distance between adjacent plate sample clamping grooves is not less than 5mm; a plurality of bar sample clamping grooves are formed in the bar sample support frame at equal intervals; the spacing between adjacent bar sample clamping grooves is not less than 10mm; the number of the basic supporting frames is two, the two basic supporting frames are arranged in parallel, the two basic supporting frames are inserted on the bottom plate through respective positioning distance-adjusting insertion blocks, and the distance between the two basic supporting frames is matched with the length of a sample; the number of the plate sample supporting frames and the number of the bar sample supporting frames are multiple, the plate sample supporting frames and the bar sample supporting frames are inserted on the foundation supporting frames in a single type multilayer stacking mode, or the plate sample supporting frames and the bar sample supporting frames are inserted on the foundation supporting frames in a mixed type multilayer stacking mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710253543.8A CN106908377B (en) | 2017-04-18 | 2017-04-18 | Sample support for pre-corrosion test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710253543.8A CN106908377B (en) | 2017-04-18 | 2017-04-18 | Sample support for pre-corrosion test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106908377A CN106908377A (en) | 2017-06-30 |
| CN106908377B true CN106908377B (en) | 2023-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710253543.8A Active CN106908377B (en) | 2017-04-18 | 2017-04-18 | Sample support for pre-corrosion test |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540778B (en) * | 2019-01-15 | 2020-12-18 | 华北水利水电大学 | Quantitative evaluation device and test method for peeling corrosion performance of 7N01 aluminum alloy |
| CN115629029A (en) * | 2022-07-25 | 2023-01-20 | 中国长江三峡集团有限公司 | Steel strand dry-wet cycle corrosion test device and test method |
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