CN108760437B - Sample preparation method for tensile shear strength of structural adhesive steel to steel - Google Patents
Sample preparation method for tensile shear strength of structural adhesive steel to steel Download PDFInfo
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- CN108760437B CN108760437B CN201810788814.4A CN201810788814A CN108760437B CN 108760437 B CN108760437 B CN 108760437B CN 201810788814 A CN201810788814 A CN 201810788814A CN 108760437 B CN108760437 B CN 108760437B
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- steel
- copper wire
- steel sheets
- shear strength
- placing
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 108
- 239000010959 steel Substances 0.000 title claims abstract description 108
- 239000000853 adhesive Substances 0.000 title claims abstract description 31
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 31
- 238000005464 sample preparation method Methods 0.000 title claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229920003023 plastic Polymers 0.000 claims abstract description 22
- 239000002985 plastic film Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000005488 sandblasting Methods 0.000 claims abstract description 12
- 238000009736 wetting Methods 0.000 claims abstract description 10
- 238000012423 maintenance Methods 0.000 claims abstract description 7
- 238000011282 treatment Methods 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 claims description 23
- 239000010949 copper Substances 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 238000004026 adhesive bonding Methods 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims 3
- 239000011230 binding agent Substances 0.000 claims 2
- 238000002360 preparation method Methods 0.000 abstract description 12
- 238000002156 mixing Methods 0.000 description 6
- 239000012790 adhesive layer Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003085 diluting agent Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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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
Abstract
A structural adhesive steel sample preparation method for tensile shear strength of steel, carry on the surface wetting to the steel sheet after sand blasting, one of them steel sheet places the copper wire, another steel sheet does not place the copper wire, the surface is rubberized; placing a horizontal plate; then placing the tables in sequence, wherein the transparent plastic sheet film is required to completely cover the tables, and the two steel sheets which are subjected to different treatments are attached according to the sizes of the unit cells in the tables; then, the two steel sheets are perpendicular to and aligned with the horizontal plate, then the two ends of the overlapped steel sheets are clamped by a clamping tool, the positions of the two steel sheets are ensured not to change when the two ends of the overlapped steel sheets are clamped, the clamping tool can be detached after the sample is prepared and maintained for 24 hours in the environment of 23 ℃, and the maintenance is carried out conventionally. By adopting the sample preparation method, the limitation of a specific complex tool can be eliminated, and the sample can be accurately prepared under the condition without the tool. The method has the advantages of solving the problem that the working sample preparation cannot be carried out continuously in a large quantity, along with simple and easily-obtained tools and continuous sample preparation without limit.
Description
Technical Field
The invention relates to the field of determination of tensile shear strength of adhesive steel to steel, in particular to a sample preparation method of the tensile shear strength of structural adhesive steel to steel.
Background
GB50728-2011 specifies the content of structural adhesive safety identification, wherein the tensile shear strength of adhesive steel to steel is an important identification index in measuring the adhesive bonding capacity of the adhesive. GB50728-2011 specifies that the tensile shear strength of the adhesive steel to steel is measured according to the existing national standard GB/T7124. In the existing domestic prior patent technology, in the stretching and shearing-resistant sample preparation, a correspondingly specially designed tool mold is required to be used for accurately completing sample preparation, and the limitation of the mold is large; moreover, the number of samples produced by one mold has an upper limit, and a large number of samples cannot be produced continuously.
The search shows that the prior patent numbers CN204154560U and CN 206546286U; and the patent technical proposal of the patent No. CN106840872A has the following defects: 1. the technical scheme provided by the patent can finish sample preparation only by means of tool equipment with specific complex design. 2. According to the technical scheme provided by the patent, due to the limitation of the mold, the same mold cannot be used for large-scale continuous sample preparation.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a method for preparing a structural adhesive steel-to-steel tensile shear strength sample, which is used for solving the technical problem that the existing tensile shear-resistant precise sample preparation needs to be carried out by means of a complex tool, and simultaneously solving the defect that the tool cannot continuously prepare a large number of samples when the adhesive is used for tensile shear-resistant sample preparation.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for preparing the structural adhesive steel sample with the tensile and shearing strength to steel features that the needed tools include horizontal plate, table, transparent plastic film, copper wire and clamping tool. Wetting the surface of the steel sheet subjected to sand blasting, uniformly placing a section of copper wire on one steel sheet along a direction parallel to the force application direction of the test piece, and performing gluing treatment on the surface of the other steel sheet without placing the copper wire; placing the horizontal plate and ensuring the horizontal placement of the horizontal plate; then placing the form and the transparent plastic sheet film in sequence, wherein the transparent plastic sheet film is required to completely cover the form; adhering the two steel sheets which are processed differently on a transparent plastic sheet film according to the sizes of the cells in the table, wherein the adhering needs to be compared with the cells in the table; then, the two steel sheets are perpendicular and aligned with the horizontal plate, then the two ends of the overlapped steel sheets are clamped by a clamping tool, the positions of the two steel sheets are ensured not to change when the two ends of the overlapped steel sheets are clamped, the clamping tool can be detached after the sample is prepared and maintained for 24 hours in the environment of 23 ℃, and then the conventional maintenance can be carried out.
The invention also has the following additional technical features:
preferably, the wetting is to coat the sand blasting area of the steel sheet with the adhesive to be prepared, soak for a moment and then remove the coated adhesive.
Optimally, the copper wires need to be uniformly placed in parallel to the force application direction of the test piece, so that the influence of the copper wires on the adhesive layer and the test result can be reduced to the greatest extent; the placing method of the copper wire comprises the following steps: and (2) intercepting a copper wire with the diameter of 0.2mm, fixing one end of the copper wire on the steel sheet, wherein the fixed position cannot be in a 12.5mm area to be bonded after sand blasting, the copper wire needs to be parallel to the stress direction of the test piece, bypasses the tail end of the steel sheet, is tensioned, and is fixed in a certain area on the back of the steel sheet.
Optimally, the horizontal plate has a flat surface without dirt, the two steel sheets can be aligned with each other, and the effective lap joint width is 25 mm.
Optimized, form cell size 12.5mm 25 mm.
Optimally, the diameter size of the copper wire is 2 mm; the thickness of the adhesive was 2 mm.
Optimally, the clamping tool is a long tail clamp, the effective clamping length of the long tail clamp is not less than 15mm, on one hand, the operation is convenient, and on the other hand, the steel sheet is not displaced before the sample is solidified, so that the test result is not influenced; the clamping tool provides a force greater than 8N.
Compared with the prior art, the invention has the advantages that:
(1) by adopting the sample preparation method, the limitation of a specific complex tool can be eliminated, and the sample can be accurately prepared under the condition without the tool. And the required tools are simple and easy to obtain.
(2) The sample preparation method of the invention solves the problem that the sample preparation in work can not be carried out continuously in large quantity, and the sample preparation method of the invention can carry out continuous sample preparation without limit.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of gluing a wetted steel sheet according to the embodiment of the invention;
FIG. 2 is a schematic view of copper wires on a steel sheet wetted by the solution of the present invention;
FIG. 3 is a table alignment diagram of the present invention;
FIG. 4 is a schematic diagram of sheet steel adhesion in a comparison table according to the present invention;
fig. 5 is a schematic view of the clamping tool according to the invention.
Detailed Description
While exemplary embodiments of the present disclosure have been shown, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
A method for preparing the structural adhesive steel sample with the tensile and shearing strength to steel features that the needed tools include horizontal plate, table, transparent plastic film, copper wire and clamping tool.
Wetting the surface of the steel sheet subjected to sand blasting, uniformly placing a section of copper wire on one steel sheet along a direction parallel to the force application direction of the test piece, and performing gluing treatment on the surface of the other steel sheet without placing the copper wire; placing the horizontal plate and ensuring the horizontal placement of the horizontal plate; then placing the form and the transparent plastic sheet film in sequence, wherein the transparent plastic sheet film is required to completely cover the form; adhering the two steel sheets which are processed differently on a transparent plastic sheet film according to the sizes of the cells in the table, wherein the adhering needs to be compared with the cells in the table; then, the two steel sheets are perpendicular and aligned with the horizontal plate, then the two ends of the overlapped steel sheets are clamped by a clamping tool, the positions of the two steel sheets are ensured not to change when the two ends of the overlapped steel sheets are clamped, the clamping tool can be detached after the sample is prepared and maintained for 24 hours in the environment of 23 ℃, and then the conventional maintenance can be carried out.
Wetting means that an adhesive to be prepared is coated on a sand blasting area of a steel sheet, the steel sheet is soaked for a moment, and then the coated adhesive is removed.
The copper wires need to be uniformly arranged in parallel to the force application direction of the test piece, so that the influence of the copper wires on the adhesive layer and the test result can be reduced to the greatest extent; the placing method of the copper wire comprises the following steps: and (2) intercepting a copper wire with the diameter of 0.2mm, fixing one end of the copper wire on the steel sheet, wherein the fixed position cannot be in a 12.5mm area to be bonded after sand blasting, the copper wire needs to be parallel to the stress direction of the test piece, bypasses the tail end of the steel sheet, is tensioned, and is fixed in a certain area on the back of the steel sheet.
The horizontal plate surface is flat and free of dirt, the two steel sheets can be aligned with each other, and the effective lap joint width is 25 mm.
The table cell size of 12.5mm 25mm ensures an effective lap length of 12.5mm for both sheets.
For the placed copper wires, the diameter size is 2mm, and the thickness of the adhesive layer can be ensured to be 2 mm; in addition, the copper wires must be uniformly placed in parallel to the force application direction of the test piece, and the influence of the copper wires on the adhesive layer and the test result can be reduced to the greatest extent.
The clamping tool is a long tail clamp, the effective clamping length of the long tail clamp is not less than 15mm, on one hand, the operation is convenient, and on the other hand, the steel sheet is not displaced before the sample is solidified, so that the test result is not influenced; the clamping tool provides a force greater than 8N.
Example 1
The component A comprises: 100 parts by weight of ba ling petrochemical 128, 10 parts by weight of diluent 622;
and B component: 100 parts by weight of Beijing Jindaoshi 04 curing agent.
Mixing the component A and the component B in a weight ratio of 2: 1 stirring and mixing evenly to prepare the adhesive.
Wetting the surface of the steel sheet subjected to sand blasting, uniformly placing a section of copper wire on one steel sheet along a direction parallel to the force application direction of the test piece, and performing gluing treatment on the surface of the other steel sheet without placing the copper wire; placing the horizontal plate and ensuring the horizontal placement of the horizontal plate; then placing the form and the transparent plastic sheet film in sequence, wherein the transparent plastic sheet film is required to completely cover the form; adhering the two steel sheets which are processed differently on a transparent plastic sheet film according to the sizes of the cells in the table, wherein the adhering needs to be compared with the cells in the table; then, the two steel sheets are perpendicular to and aligned with the horizontal plate, then the two ends of the overlapped steel sheets are clamped by a clamping tool, the positions of the two steel sheets are ensured not to change when the two ends of the overlapped steel sheets are clamped, the clamping tool can be detached after the sample is prepared and is maintained for 24 hours in the environment of 23 ℃, and the test is carried out after the conventional maintenance.
Example 2
The component A comprises: 100 parts by weight of ba ling petrochemical 128, 15 parts by weight of diluent 622;
and B component: 100 parts by weight of Beijing Jindaoshi 04 curing agent.
Mixing the component A and the component B in a weight ratio of 2: 1 stirring and mixing evenly to prepare the adhesive.
Wetting the surface of the steel sheet subjected to sand blasting, uniformly placing a section of copper wire on one steel sheet along a direction parallel to the force application direction of the test piece, and performing gluing treatment on the surface of the other steel sheet without placing the copper wire; placing the horizontal plate and ensuring the horizontal placement of the horizontal plate; then placing the form and the transparent plastic sheet film in sequence, wherein the transparent plastic sheet film is required to completely cover the form; adhering the two steel sheets which are processed differently on a transparent plastic sheet film according to the sizes of the cells in the table, wherein the adhering needs to be compared with the cells in the table; then, the two steel sheets are perpendicular to and aligned with the horizontal plate, then the two ends of the overlapped steel sheets are clamped by a clamping tool, the positions of the two steel sheets are ensured not to change when the two ends of the overlapped steel sheets are clamped, the clamping tool can be detached after the sample is prepared and is maintained for 24 hours in the environment of 23 ℃, and the test is carried out after the conventional maintenance.
Example 3
The component A comprises: 100 parts by weight of ba ling petrochemical 128, 20 parts by weight of diluent 622;
and B component: 100 parts by weight of Beijing Jindaoshi 04 curing agent.
Mixing the component A and the component B in a weight ratio of 2: 1 stirring and mixing evenly to prepare the adhesive.
Wetting the surface of the steel sheet subjected to sand blasting, uniformly placing a section of copper wire on one steel sheet along a direction parallel to the force application direction of the test piece, and performing gluing treatment on the surface of the other steel sheet without placing the copper wire; placing the horizontal plate and ensuring the horizontal placement of the horizontal plate; then placing the form and the transparent plastic sheet film in sequence, wherein the transparent plastic sheet film is required to completely cover the form; adhering the two steel sheets which are processed differently on a transparent plastic sheet film according to the sizes of the cells in the table, wherein the adhering needs to be compared with the cells in the table; then, the two steel sheets are perpendicular to and aligned with the horizontal plate, then the two ends of the overlapped steel sheets are clamped by a clamping tool, the positions of the two steel sheets are ensured not to change when the two ends of the overlapped steel sheets are clamped, the clamping tool can be detached after the sample is prepared and is maintained for 24 hours in the environment of 23 ℃, and the test is carried out after the conventional maintenance.
The test data for the above three examples are shown in the following table:
compared with the prior art, the invention can get rid of the limitation of specific complex tools, namely, the accurate sample preparation can be realized under the condition without tools. In addition, the required tools are simple and easy to obtain, the limitation that a large number of continuous samples can not be prepared in the working sample preparation is solved, and the method can continuously prepare the samples without limitation.
Although the embodiments have been described, once the basic inventive concept is known, other variations and modifications can be made to the embodiments by those skilled in the art, so that the above embodiments are only examples of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes that can be used in the present specification or directly or indirectly applied to other related fields are encompassed by the present invention.
Claims (7)
1. A structural adhesive steel-to-steel tensile shear strength sample preparation method is characterized in that tools needed to be used comprise a horizontal plate, a table, a transparent plastic film, a copper wire and a clamping tool;
wetting the surfaces of the steel sheets subjected to sand blasting, uniformly placing a section of copper wire on one steel sheet along a direction parallel to the force application direction of the test piece, not placing the copper wire on the other steel sheet, and gluing the surfaces of the two steel sheets; placing the horizontal plate and ensuring the horizontal placement of the horizontal plate; then placing the form and the transparent plastic sheet film in sequence, wherein the transparent plastic sheet film is required to completely cover the form; on a transparent plastic sheet film, according to the size of a cell in a table, attaching the two steel sheets which are subjected to different treatments to the cell in the table, wherein the attachment is in accordance with the cell in the table; then, the two steel sheets are perpendicular and aligned with the horizontal plate, then the two ends of the overlapped steel sheets are clamped by a clamping tool, the positions of the two steel sheets are ensured not to change during clamping, the clamping tool can be detached after the sample is prepared and maintained for 24 hours in the environment of 23 ℃, and then the maintenance is carried out conventionally.
2. The method for preparing structural adhesive steel-to-steel tensile shear strength samples according to claim 1, wherein wetting is to coat the sand-blasted area of the steel sheet with the adhesive to be prepared, soak for a moment, and then remove the coated adhesive.
3. The structural adhesive steel-to-steel tensile shear strength sample preparation method according to claim 1, wherein copper wires need to be uniformly placed in parallel to the force application direction of a test piece; the placing method of the copper wire comprises the following steps: and (2) intercepting a copper wire with the diameter of 0.2mm, fixing one end of the copper wire on the steel sheet, wherein the fixed position cannot be in a 12.5mm area to be bonded after sand blasting, the copper wire needs to be parallel to the stress direction of the test piece, bypasses the tail end of the steel sheet, is tensioned, and is fixed in a certain area on the back of the steel sheet.
4. A method of sampling the tensile shear strength of structural adhesive steel to steel as claimed in claim 1 wherein the horizontal plate is flat and clean on its surface, the two steel sheets are aligned and the effective lap width is 25 mm.
5. A method of sampling the tensile shear strength of structural adhesive steel to steel as claimed in claim 1 wherein the table cell size is 12.5mm by 25 mm.
6. The method for sampling the tensile shear strength of structural adhesive steel to steel of claim 1, wherein the diameter dimension of the copper wire is 2 mm; the thickness of the adhesive was 2 mm.
7. The method for preparing the tensile shear strength of structural adhesive steel to steel as claimed in claim 1, wherein the clamping tool is a binder clip, the effective clamping length of the binder clip is not less than 15mm, on one hand, the operation is convenient, and on the other hand, the steel sheet is not displaced before the sample is solidified, so that the test result is not influenced; the clamping tool provides a force greater than 8N.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810788814.4A CN108760437B (en) | 2018-07-18 | 2018-07-18 | Sample preparation method for tensile shear strength of structural adhesive steel to steel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810788814.4A CN108760437B (en) | 2018-07-18 | 2018-07-18 | Sample preparation method for tensile shear strength of structural adhesive steel to steel |
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| CN108760437A CN108760437A (en) | 2018-11-06 |
| CN108760437B true CN108760437B (en) | 2020-06-26 |
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| CN110208067A (en) * | 2019-07-10 | 2019-09-06 | 卡本科技集团股份有限公司 | A kind of method for making sample enhancing the tensile sample end anchorage of high tensile steel wire cloth |
| CN112854800A (en) * | 2021-01-06 | 2021-05-28 | 卡本科技集团股份有限公司 | Method for improving static load anchoring performance of prestressed carbon plate |
| CN113702135B (en) * | 2021-09-16 | 2024-02-06 | 中车株洲电力机车有限公司 | Sample preparation device |
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| JP2018024907A (en) * | 2016-08-09 | 2018-02-15 | 新日鐵住金株式会社 | Steel sheet and method of manufacturing the steel sheet |
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2018
- 2018-07-18 CN CN201810788814.4A patent/CN108760437B/en active Active
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| CN105259108A (en) * | 2015-10-23 | 2016-01-20 | 南京南车浦镇城轨车辆有限责任公司 | Elastic adhesive fatigue property test structure and manufacturing method thereof |
| CN105891111A (en) * | 2016-05-30 | 2016-08-24 | 三友（天津）高分子技术有限公司 | Structure adhesive tensile shear property testing fixture and using method |
| JP2018024907A (en) * | 2016-08-09 | 2018-02-15 | 新日鐵住金株式会社 | Steel sheet and method of manufacturing the steel sheet |
| CN207181126U (en) * | 2017-09-27 | 2018-04-03 | 广东省江门市质量计量监督检测所 | A kind of sample preparation tool for being used to determine wood adhesive compression shear strength |
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