Peeling test clamp for copper-aluminum interface eutectic composite plate strip
By designing a copper-aluminum interface eutectic composite plate strip peeling test fixture, a linear sliding mechanism and position adjustment module are used to ensure that the tension direction of the copper layer is perpendicular to the copper-aluminum interface eutectic composite plate strip, the measurement error problem caused by bending deformation of the copper layer in the prior art is solved, and accurate peel strength measurement is achieved.
Patent Information
- Application Number
- CN202420770597.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-15
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-04-15
AI Technical Summary
In the prior art, when measuring the interface peel strength of copper-aluminum composite materials, the bending deformation of the copper layer requires a large tensile force, resulting in a large error in the measurement result.
A copper-aluminum interface eutectic composite plate strip peeling test fixture is designed, including a tensile cross beam, an S-type tension sensor, a clamping device, a linear sliding mechanism and a position adjustment module. Through the cooperation of the linear sliding mechanism and a position adjustment module, the tension direction of the copper layer is always perpendicular to the copper-aluminum interface eutectic composite plate strip.
The 90° vertical peeling of copper-aluminum interface eutectic composite material is achieved, with small measurement errors and can accurately reflect the true peeling strength of the material. The fixture is simple in structure and reliable in performance.
Smart Images
Figure CN222895984U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of strength testing of layered composite materials, in particular to a copper-aluminum interface eutectic composite plate strip peeling test fixture. Background Art
[0002] At present, metal layered composite materials are widely used in various fields, and the product types are increasing. The copper-aluminum interface eutectic composite material made by solid-liquid casting and rolling of copper and aluminum metals can not only combine the good properties of copper's high electrical conductivity and high thermal conductivity, but also have the characteristics of aluminum's light weight and low price. It is widely used in the fields of electronics, new energy, and machinery. With the increase in its demand, the quality requirements for copper-aluminum composite materials are also gradually increasing.
[0003] Copper-aluminum composite materials are prone to cracking and fissures at the interface under service conditions, leading to material failure. Therefore, interface peel strength is one of the important indicators for measuring the performance of copper-aluminum composite plate materials. The existing technology for measuring peel strength mostly adopts the 180° peeling method. The bending deformation of the copper layer during the peeling process requires a large tensile force, so that the measured composite layer bonding force includes the copper layer deformation force, resulting in a large error in the measurement result. Therefore, it is necessary to provide a measuring device that can solve the bending deformation error of the copper layer to ensure the accuracy of the peel strength measurement of the copper-aluminum composite material. Summary of the invention
[0004] In order to overcome the shortcomings of the existing technology, the utility model provides a copper-aluminum interface eutectic composite strip peeling test fixture, which can ensure that the vertical peeling test requirements are met when measuring the interface peeling strength of the copper-aluminum composite material, has a simple structure and small measurement error.
[0005] The technical solution adopted by the utility model to solve its technical problems is:
[0006] A copper-aluminum interface eutectic composite strip peeling test fixture comprises a stretching beam of a stretching machine, an S-shaped tension sensor, an upper connecting piece, a clamping device, a linear sliding mechanism, a slide fixing seat, a lower connecting piece, a fixed flange and a position adjustment module. The clamping device is connected with the upper connecting piece, the S-shaped tension sensor and the stretching beam of the stretching machine in sequence from bottom to top, and is located directly above the linear sliding mechanism. The linear sliding mechanism is fixed to the stretching machine base through the fixed flange after being fastened to the slide fixing seat and the lower connecting piece. When the clamping device is stretched upward by the stretching beam of the stretching machine, the linear sliding mechanism is driven by the position adjustment module to maintain synchronous linear motion with the clamping device at an equidistant distance, so as to ensure that the test requirements of vertical peeling are met during the test.
[0007] Furthermore, the clamping device includes a clamping bolt, a clamping block and a clamping base. There are threaded holes on both sides of the clamping base. The clamping bolt is screwed together with the threaded holes of the clamping base and is fastened to the clamping block. The clamping device rotates the screw handles on the clamping bolts on both sides to make the two clamping blocks move toward the middle and fit together, thereby realizing the clamping function.
[0008] Preferably, the clamping surface of the clamping block is processed with textures to increase friction and thus enhance the clamping force.
[0009] Furthermore, the linear sliding mechanism includes a clamping module, an L-shaped fixing plate, a linear moving platform, a slide, a linear slide rail and a limit plate. The clamping module is installed in the center of the upper plane of the linear moving platform to fix the test sample. The limit plates are fastened on both sides of the linear motion direction of the linear moving platform to limit the moving distance of the linear moving platform. The linear slide rail is fastened to the lower plane of the linear moving platform by bolts and is located between the two limit plates. The linear slide rail cooperates with the slide to realize linear sliding motion, and the slide is fixed to the slide fixing seat by bolts.
[0010] Furthermore, the clamping module includes clamping bolts and an L-shaped clamping plate, and the L-shaped clamping plate is fastened to the linear moving platform. By tightening a number of clamping bolts, the test sample is fixed between the linear moving platform and the L-shaped clamping plate.
[0011] The position adjustment module includes a traction rope fixing block, a traction rope fixing rod, a traction rope and a guide wheel. The guide wheel is fastened to the guide wheel shaft of the slide fixing seat. The end of the traction rope fixing rod is fixed to one end of the traction rope, and the other end of the traction rope is fixed to the end of the L-shaped fixing plate around the guide wheel. After the clamping device and the clamping module fix the test specimen, the traction rope fixing rod is adjusted upward until the traction rope is in a taut state. The traction rope fixing rod is fixed to the traction rope fixing block on the stretching beam of the stretching machine by butterfly bolts. When the stretching beam of the stretching machine is loaded and stretched upward, under the action of the traction rope and the guide wheel, the linear movable platform connected to the L-shaped fixing plate moves synchronously and equidistantly along the direction of the linear slide rail.
[0012] Preferably, the traction rope is made of steel wire rope, which has high strength and is not easily stretched and deformed after loading.
[0013] The beneficial effects of the utility model are mainly manifested in that when the fixture is used to test the peeling strength of the copper-aluminum interface eutectic composite plate and strip, the tensile force direction applied to the copper layer is always perpendicular to the copper-aluminum interface eutectic composite plate and strip, thereby achieving a 90° vertical peeling of the copper-aluminum interface eutectic composite material, with a small measurement error, and being able to accurately reflect the true peeling strength of the material; the fixture has a simple structure and reliable performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of a copper-aluminum interface eutectic composite strip peeling test fixture;
[0015] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle clamping device;
[0016] Figure 3 yes Figure 1 Schematic diagram of the structure of the linear sliding mechanism;
[0017] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure of the linear guide rail and the slide table;
[0018] Figure 5 yes Figure 1 Schematic diagram of the structure of the middle slide fixed seat and guide wheel;
[0019] Figure 6 It is a schematic diagram of the sample measured by the copper-aluminum interface eutectic composite strip peeling test fixture.
[0020] The accompanying drawings are marked as follows: stretching machine stretching beam 1, S-type tension sensor 2, upper connecting part 3, clamping device 4, clamping bolt 41, clamping block 42, clamping base 43, linear sliding mechanism 5, clamping module 51, clamping bolt 511, L-type clamping plate 512, L-type fixing plate 52, linear moving platform 53, slide 54, linear slide rail 55, limit plate 56 slide fixed seat 6, lower connecting part 7, fixed flange 8, position adjustment module 9, traction rope fixing block 91, traction rope fixing rod 92, traction rope 93, guide wheel 94. DETAILED DESCRIPTION
[0021] The utility model is further described below in conjunction with the accompanying drawings.
[0022] Reference Figure 1 to Figure 6 A copper-aluminum interface eutectic composite strip peeling test fixture, including a stretching machine stretching beam 1, an S-type tension sensor 2, an upper connecting piece 3, a clamping device 4, a linear sliding mechanism 5, a slide fixing seat 6, a lower connecting piece 7, a fixed flange 8 and a position adjustment module 9. The clamping device 4 is connected with the upper connecting piece 3, the S-type tension sensor 2 and the stretching machine stretching beam 1 from bottom to top, and is located directly above the linear sliding mechanism 5. The linear sliding mechanism 5 is fixed to the stretching machine base through the fixed flange 8 after being fastened and connected with the slide fixing seat 6 and the lower connecting piece 7. When the clamping device 4 is stretched upward by the stretching machine stretching beam 1, the linear sliding mechanism 5 is driven by the position adjustment module 9 to maintain equidistant synchronous linear motion with the clamping device 4, so as to ensure that the test requirements of vertical peeling are met during the test.
[0023] like Figure 2As shown, the clamping device 4 includes a clamping bolt 41, a clamping block 42 and a clamping base 43. The clamping base 43 has threaded holes on both sides. The clamping bolt 41 is screwed together with the threaded holes of the clamping base 43 and is fastened to the clamping block 42. The clamping device 4 rotates the screw handles on the clamping bolts 41 on both sides to make the two clamping blocks 42 move toward the middle and fit together to achieve the clamping function. The clamping surface of the clamping block 42 is processed with textures to increase friction and thus enhance the clamping force.
[0024] like Figure 3 As shown, the linear sliding mechanism 5 includes a clamping module 51, an L-shaped fixing plate 52, a linear moving platform 53, a slide 54, a linear slide rail 55 and a limit plate 56. The clamping module 51 is installed in the center of the upper plane of the linear moving platform 53 to fix the test sample. The limit plates 56 are fastened on both sides of the linear motion direction of the linear moving platform 53 to limit the moving distance of the linear moving platform 53. The linear slide rail 55 is fastened to the lower plane of the linear moving platform 53 by bolts and is located between the two limit plates 56. The linear slide rail 55 cooperates with the slide 54 to realize linear sliding motion. The slide 54 is fixed to the slide fixing seat 6 by bolts.
[0025] The clamping module 51 includes clamping bolts 511 and an L-shaped clamping plate 512 . The L-shaped clamping plate 512 is fastened to the linear moving platform 53 . By tightening a plurality of clamping bolts 511 , the test sample is fixed between the linear moving platform 53 and the L-shaped clamping plate 512 .
[0026] In this embodiment, after the linear slide rail 55 cooperates with the slide table 54, it can withstand the force perpendicular to the direction of linear motion, and the sliding resistance is small, thereby preventing the generation of impedance force.
[0027] The position adjustment module 9 includes a traction rope fixing block 91, a traction rope fixing rod 92, a traction rope 93, and a guide wheel 94. The guide wheel 94 is fastened to the guide wheel shaft 61 of the slide fixing seat 6. The end of the traction rope fixing rod 92 is fixed to one end of the traction rope 93, and the other end of the traction rope 93 is fixed to the end of the L-shaped fixing plate 52 around the guide wheel 94. After the clamping device 4 and the clamping module 51 fix the test specimen, the traction rope fixing rod 92 adjusts the traction rope upward until it is in a taut state. The traction rope fixing rod 92 is fixed to the traction rope fixing block 91 on the stretching beam 1 of the stretching machine by butterfly bolts. When the stretching beam 1 of the stretching machine is loaded and stretched upward, under the action of the traction rope 93 and the guide wheel 94, the linear moving platform 53 connected to the L-shaped fixing plate 52 moves synchronously and equidistantly along the direction of the linear slide rail 55.
[0028] In this embodiment, the traction rope 93 is made of a steel wire rope, which has high strength and is not easily stretched and deformed after being loaded.
[0029] When the stretching beam 1 of the stretching machine is loaded and stretched, it is necessary to ensure that the loading is stable and continuous to prevent the linear sliding mechanism 5 from moving unsteadily due to fluctuations in pressure and temperature, which may cause errors in the test.
[0030] The specific implementation steps of this embodiment are as follows:
[0031] (1) The copper-aluminum composite plate prepared by solid-liquid casting and rolling is cut into the following shapes using an electric spark cutting device along the rolling direction: Figure 6 In the standard specimen shown, the copper clad layer is separated from the aluminum substrate, and the copper clad layer is perpendicular to the copper-aluminum composite plate.
[0032] (2) The copper clad layer is clamped by the clamping device 4, and the copper-aluminum composite plate is fixed to the linear sliding mechanism 5 by the clamping bolts 511, and a certain pre-tightening force is applied to allow the copper clad layer to be freely tensioned.
[0033] (3) Guide the traction rope 93 around the guide wheel 94, pull it in and straighten it, and then pass it through the traction rope fixing rod 92 and the traction rope fixing block 91 on the stretching beam 1 of the stretching machine to ensure that the linear sliding mechanism 5 maintains an equidistant and synchronous linear motion with the clamping device 4 under the drive of the position adjustment module 9, so that the direction of the tension on the copper clad layer is always perpendicular to the copper-aluminum interface eutectic composite plate and strip.
[0034] (4) Start the stretching machine, load and stretch it steadily and continuously, and record the data after the tensile test curve in the control computer stabilizes to calculate the true peel strength of the material.
[0035] When using the fixture provided in this embodiment to test the peeling strength of the copper-aluminum interface eutectic composite plate and strip, it is ensured that the linear sliding mechanism maintains synchronous linear motion with the clamping device at an equidistant distance under the drive of the position adjustment module, and the direction of the tensile force applied to the copper composite layer is always perpendicular to the copper-aluminum interface eutectic composite plate and strip, thereby achieving a 90° vertical peeling of the copper-aluminum interface eutectic composite material. The measurement error is small, and the actual peeling strength of the material can be accurately reflected. The fixture has a simple structure and reliable performance.
[0036] The contents described in the embodiments of this specification are merely enumerations of implementation forms of the utility model concept and are for illustrative purposes only. The protection scope of the utility model should not be considered to be limited to the specific forms described in this embodiment, and the protection scope of the utility model also extends to equivalent technical means that ordinary technicians in this field can think of based on the concept of the utility model.
Claims
1. A copper-aluminum interface eutectic composite strip peeling test fixture, characterized in that: The test fixture includes a stretching beam of a stretching machine, an S-shaped tension sensor, an upper connecting piece, a clamping device, a linear sliding mechanism, a slide fixing seat, a lower connecting piece, a fixed flange and a position adjustment module. The clamping device is connected to the upper connecting piece, the S-shaped tension sensor and the stretching beam of the stretching machine from bottom to top, and is located directly above the linear sliding mechanism. The linear sliding mechanism is fastened to the slide fixing seat and the lower connecting piece and is fixed to the stretching machine base through a fixed flange. When the clamping device is stretched upward by the stretching beam of the stretching machine, the linear sliding mechanism maintains synchronous linear motion with the clamping device at an equal distance under the drive of the position adjustment module, so as to ensure that the test requirements of vertical peeling are met during the test.
2. A copper-aluminum interface eutectic composite strip peeling test fixture as claimed in claim 1, characterized in that: The clamping device includes a clamping bolt, a clamping block and a clamping base. There are threaded holes on both sides of the clamping base. The clamping bolt is screwed together with the threaded holes of the clamping base and is fastened to the clamping block. The clamping device realizes the clamping function by rotating the screw handles on the clamping bolts on both sides so that the two clamping blocks move toward the middle and fit together.
3. A copper-aluminum interface eutectic composite strip peeling test fixture as claimed in claim 2, characterized in that: The clamping surface of the clamping block is processed with textures for improving friction.
4. A copper-aluminum interface eutectic composite strip peeling test fixture as claimed in any one of claims 1 to 3, characterized in that: The linear sliding mechanism includes a clamping module, an L-shaped fixing plate, a linear moving platform, a slide, a linear slide rail and a limit plate. The clamping module is installed in the center of the upper plane of the linear moving platform to fix the test sample. The limit plates are fastened on both sides of the linear motion direction of the linear moving platform to limit the moving distance of the linear moving platform. The linear slide rail is fastened to the lower plane of the linear moving platform by bolts and is located between the two limit plates. The linear slide rail cooperates with the slide to realize linear sliding motion. The slide is fixed to the slide fixing seat by bolts.
5. A copper-aluminum interface eutectic composite strip peeling test fixture as claimed in claim 4, characterized in that: The clamping module includes clamping bolts and an L-shaped clamping plate. The L-shaped clamping plate is tightly connected to the linear moving platform. By tightening a number of clamping bolts, the test sample is fixed between the linear moving platform and the L-shaped clamping plate.
6. A copper-aluminum interface eutectic composite strip peeling test fixture as claimed in any one of claims 1 to 3, characterized in that: The position adjustment module includes a traction rope fixing block, a traction rope fixing rod, a traction rope and a guide wheel. The guide wheel is fastened to the guide wheel shaft of the slide fixing seat. The end of the traction rope fixing rod is fixed to one end of the traction rope, and the other end of the traction rope is fixed to the end of the L-shaped fixing plate around the guide wheel. After the clamping device and the clamping module fix the test specimen, the traction rope fixing rod is adjusted upward until the traction rope is in a taut state. The traction rope fixing rod is fixed to the traction rope fixing block on the stretching beam of the stretching machine by butterfly bolts. When the stretching beam of the stretching machine is loaded and stretched upward, under the action of the traction rope and the guide wheel, the linear movable platform connected to the L-shaped fixing plate moves synchronously and equidistantly along the direction of the linear slide rail.
7. A copper-aluminum interface eutectic composite strip peeling test fixture as claimed in claim 6, characterized in that: The material of the traction rope is a steel wire rope.