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Shear device and method for detecting magnetic pulse welding connector performance

A technology for welding joints and shearing devices, which is applied to measuring devices and uses a stable shear force to test the strength and strength characteristics of materials, can solve problems such as the strength distribution of the connection area that cannot meet the detection of welding joints, and achieve high efficiency and speed. Effectiveness of testing, simple operation, wide versatility

Pending Publication Date: 2019-01-04
BEIJING MECHANICAL EQUIP INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above analysis, the present invention aims to provide a shearing device and method for detecting the performance of magnetic pulse welded joints, in order to solve the problem that the existing shearing devices cannot meet the intensity distribution of the connection area of ​​the detection welded joints

Method used

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  • Shear device and method for detecting magnetic pulse welding connector performance
  • Shear device and method for detecting magnetic pulse welding connector performance
  • Shear device and method for detecting magnetic pulse welding connector performance

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Embodiment 1

[0035] A specific embodiment of the present invention, such as Figure 1 to Figure 3 As shown, a shearing device for testing the performance of magnetic pulse welded joints is disclosed, including a pressure rod 1, a sample positioning piece 4, a pressure block 5 and a base 6; the base 6 is used to fix the entire shearing device, and the base 6. The pressure receiving block 5 and the sample positioning piece 4 are arranged sequentially from bottom to top, that is, the pressure receiving block 5 is located above the base 6, and the sample positioning piece 4 is located above the pressure receiving block 5; the pressure receiving block 5 is provided with a first aperture The first through hole, the sample positioning piece 4 is provided with a second through hole with a second aperture, the first aperture is smaller than the second aperture, the first through hole and the second through hole are concentrically arranged; the first aperture is larger than that of the inner pipe mem...

Embodiment 2

[0045] Another specific embodiment of the present invention discloses a method for detecting the performance of magnetic pulse welded joints, specifically using the shearing device used for detecting the performance of magnetic pulse welded joints in Embodiment 1 to detect the performance of magnetic pulse welded joints , including the following steps:

[0046] Step 1: Before the shear test, fix the compression block 5 and the sample positioning piece 4 on the base 6, and the sample positioning piece 4 is located between the base 6 and the compression block 5;

[0047] Step 2: Place the welded sample slice 7 in the second through hole of the sample positioning piece 4, place the outer pipe 9 of the welded sample slice 7 on the annular shearing part, and use other methods such as fixing bolts 3 or buckles Fix the positioning block 2, the number of fixing bolts 3 is at least two, and they are arranged symmetrically; the pressure rod 1 is pressed against the inner pipe piece 8 of...

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Abstract

The invention relates to a shear device and method for detecting magnetic pulse welding connector performance, belongs to the technical field of mechanical performance testing device and welding, andsolves the problem that an existing shear device cannot detect the strength distribution of a welding connector connecting area. The shear device comprises a pressing rod and a base and is characterized in that a pressed block and a sample positioning piece are sequentially arranged on the base from bottom to top; the pressed block is provided with a first through hole with a first hole diameter,the sample positioning piece is provided with a second through hole with a second hole diameter, the first hole diameter is smaller than the first hole diameter, and the first through hole and the second through hole are concentric; the first hole diameter is larger than the outer diameter of an inner pipe and smaller than the outer diameter of an outer pipe; the rod diameter of the pressing rod is smaller than the outer diameter of the inner pipe and larger than the inner diameter of the inner pipe; the part, exceeding the inner circumference of the sample positioning piece, of the inner circumference of the pressed block is an annular shear part; the pressing rod and the shear part jointly complete the shearing of a sample slice. The shear device and method can detect the strength distribution of the welding connector connecting area.

Description

technical field [0001] The invention relates to the field of mechanical performance testing device and welding technology, in particular to a shearing device for testing the performance of magnetic pulse welding joints. Background technique [0002] In aerospace, automobile and other manufacturing fields, the demand for connection methods of small-diameter dissimilar material pipe parts is increasing, such as liquid hydrogen and liquid fuel tank pipes of rocket engine systems, connection between guide belts and projectiles of aircraft cannons, steering shafts of automobiles, consumer electronics, etc. Acoustic exhaust pipe, common rail fuel injection system, etc. The magnetic pulse welding technology came into being based on these requirements. Its welding principle is similar to that of explosive welding. It uses a strong magnetic field to generate a strong electromagnetic force between the metals to be welded, and then makes the two metals collide violently together, and r...

Claims

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Application Information

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IPC IPC(8): G01N3/24
CPCG01N3/24G01N2203/0025G01N2203/04
Inventor 阚纯磊王俞凯梁迎彬李建冬崔广志
Owner BEIJING MECHANICAL EQUIP INST
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