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CN-224216429-U - Clamp for high-temperature shear strength of composite material welding interface

CN224216429UCN 224216429 UCN224216429 UCN 224216429UCN-224216429-U

Abstract

The utility model relates to a clamp for high-temperature shear strength of a composite material welding interface, and belongs to the technical field of material detection. The clamp comprises an upper clamp and a lower clamp, the upper clamp sequentially comprises an upper clamping rod, an upper platform and an upper standing block from top to bottom, the sections of the upper clamping rod and the upper platform are round, the sections of the upper standing block are semicircular, the outer peripheral surfaces of the upper platform and the upper standing block are overlapped, the lower clamp sequentially comprises a lower standing block, a lower platform and a lower clamping rod from top to bottom, the sections of the lower clamping rod and the lower platform are round, the sections of the lower standing block are semicircular, the outer peripheral surfaces of the lower platform and the lower standing block are overlapped, the arc-shaped protrusions of the lower standing block and the arc-shaped protrusions of the upper standing block are opposite in direction, through grooves are formed in the lower standing block, and the central lines of the through grooves are parallel to a horizontal plane. The clamp has a simple structure, accurate shear strength test results and is suitable for composite samples or test samples with smaller sizes.

Inventors

  • DONG SHASHA
  • WU BIN
  • LI NAN
  • WANG YUXUAN
  • ZHANG JIAWU

Assignees

  • 钢铁研究总院有限公司

Dates

Publication Date
20260508
Application Date
20250414

Claims (10)

  1. 1. A clamp for high-temperature shear strength of a composite material welding interface is characterized by comprising an upper clamp (2) and a lower clamp (3), The upper clamp (2) sequentially comprises an upper clamping rod (21), an upper platform (22) and an upper standing block (23) from top to bottom, wherein the cross sections of the upper clamping rod (21) and the upper platform (22) are round, the cross section of the upper standing block (23) is semicircular, and the peripheral surfaces of the upper platform (22) and the upper standing block (23) are overlapped; The lower clamp (3) sequentially comprises a lower standing block (31), a lower platform (32) and a lower clamping rod (33) from top to bottom, wherein the cross sections of the lower clamping rod (33) and the lower platform (32) are round, the cross section of the lower standing block (31) is semicircular, the outer peripheral surfaces of the lower platform (32) and the lower standing block (31) are overlapped, and the arc-shaped bulges of the lower standing block (31) and the upper standing block (23) are opposite in direction; the lower vertical block (31) is provided with a radial through groove (4).
  2. 2. The clamp for high-temperature shear strength of a composite material welding interface according to claim 1, wherein the upper clamping rod (21), the upper platform (22), the upper standing block (23), the lower standing block (31), the lower platform (32) and the lower clamping rod (33) are all coaxially arranged.
  3. 3. The clamp for high-temperature shear strength of a composite material welding interface according to claim 1, wherein the upper clamping rod (21), the upper platform (22) and the upper standing block (23) are integrally formed, the lower standing block (31), and the lower platform (32) and the lower clamping rod (33) are integrally formed.
  4. 4. The clamp for high-temperature shear strength of a composite material welding interface according to claim 1, wherein the upper clamping rod (21) is connected with the upper platform (22) in a threaded manner, and the lower clamping rod (33) is connected with the lower platform (32) in a threaded manner.
  5. 5. A clamp for high temperature shear strength of a composite welding interface according to claim 1, characterized in that the upper clamping bar (21) and the lower clamping bar (33) have the same diameter, and the upper platform (22) and the lower platform (32) have the same diameter.
  6. 6. A clamp for high temperature shear strength of a composite material welding interface according to claim 5, characterized in that the diameter of the upper clamping bar (21) is smaller than the diameter of the upper platform (22) and the diameter of the lower clamping bar (33) is smaller than the diameter of the lower platform (32).
  7. 7. A clamp for high temperature shear strength of a composite material welding interface according to claim 1, characterized in that the cross section of the through groove (4) is circular or quadrangular.
  8. 8. The fixture for high-temperature shear strength of a composite material welding interface according to claim 7, wherein fixing blocks (5) are arranged in the through grooves (4), the fixing blocks (5) are in one-to-one correspondence with the through grooves (4), and fixing grooves (51) for fixing the composite sample (1) are formed in the fixing blocks (5).
  9. 9. The fixture for high-temperature shear strength of a composite material welding interface according to claim 7, wherein when the cross section of the through groove (4) is circular, a plurality of limiting blocks (52) are arranged on the fixed block (5), and grooves for fixing the limiting blocks (52) are formed in the through groove (4).
  10. 10. A clamp for high temperature shear strength of a composite welding interface according to claim 1, characterized in that the distance between the upper riser (23) and the lower riser (31) is 0.5-1mm.

Description

Clamp for high-temperature shear strength of composite material welding interface Technical Field The utility model relates to the technical field of material detection, in particular to a clamp for high-temperature shear strength of a welding interface of a composite material. Background The welding method is widely used for connecting different materials or the same materials by using materials in some fields so as to meet the structural use and certain performance use requirements of key parts, so that the strength of a welding interface is very important to explore, different welding process parameters are selected according to different requirements, and scientific data reference can be provided for actual requirements. The shear strength measurement of the sample interface depends on the size of the sample, the test environment, etc. Therefore, different sheared samples need to be matched with corresponding clamps according to actual requirements and test requirements, and the existing clamps are relatively complex in structure and suitable for samples or test samples with larger sizes. Disclosure of utility model In view of the above analysis, the utility model aims to provide a clamp for high-temperature shear strength of a welding interface of a composite material, which has a simple structure, accurate shear strength test results and is suitable for a composite sample or specimen with smaller size. In one aspect, the utility model provides a clamp for high temperature shear strength of a composite welding interface, the clamp comprising an upper clamp and a lower clamp, The upper clamp comprises an upper clamping rod, an upper platform and an upper standing block in sequence from top to bottom, the cross sections of the upper clamping rod and the upper platform are circular, the cross section of the upper standing block is semicircular, and the peripheral surfaces of the upper platform and the upper standing block are overlapped; The lower clamp comprises a lower vertical block, a lower platform and a lower clamping rod from top to bottom in sequence, wherein the cross sections of the lower clamping rod and the lower platform are round, the cross section of the lower vertical block is semicircular, the peripheral surfaces of the lower platform and the lower vertical block are overlapped, and the directions of arc-shaped bulges of the lower vertical block and the upper vertical block are opposite; The lower vertical block is provided with a radial through groove. Further, the upper clamping rod, the upper platform, the upper standing block, the lower platform and the lower clamping rod are all coaxially arranged. Further, the upper clamping rod, the upper platform and the upper vertical block are integrally formed, and the lower vertical block, the lower platform and the lower clamping rod are integrally formed. Further, the upper clamping rod is connected with the upper platform in a threaded mode, and the lower clamping rod is connected with the lower platform in a threaded mode. Further, the diameters of the upper clamping rod and the lower clamping rod are the same, and the diameters of the upper platform and the lower platform are the same. Further, the diameter of the upper clamping rod is smaller than that of the upper platform, and the diameter of the lower clamping rod is smaller than that of the lower platform. Further, the cross section of the through groove is round or quadrilateral. Further, fixed blocks are arranged in the through grooves, the fixed blocks correspond to the through grooves one by one, and fixed grooves for fixing the composite sample are formed in the fixed blocks. Further, when the cross section of the through groove is circular, a plurality of limiting blocks are arranged on the fixed block, and grooves for fixing the limiting blocks are formed in the through groove. Further, the distance between the upper vertical block and the lower vertical block is 0.5-1mm. Compared with the prior art, the utility model has at least one of the following beneficial effects: 1. The utility model discloses a clamp which comprises an upper clamp and a lower clamp, wherein the upper clamp comprises an upper clamping rod, an upper platform and an upper vertical block, the lower clamp comprises a lower vertical block, the lower platform and the lower clamping rod, and a through groove is formed in the lower vertical block and is used for placing and fixing a composite sample; 2. The clamp provided by the utility model has a simple structure, can test the shear strength of a composite material or a sample at room temperature, can be placed in a heating device to test the shear strength of the composite material or the sample at high temperature, has a simple structure and an accurate shear strength test result, and is suitable for a composite sample or a sample with smaller size; 3. The lower vertical block of the lower clamp is provided with a through groove, the through groove is inte