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Tool for welding stud bending test

A technology of bending test and tooling, which is applied in the direction of applying stable bending force to test the strength of materials, measuring devices, instruments, etc. It can solve the problems of increasing the cost of tooling production, low detection efficiency, and limited number of times of use, etc., to save transportation costs and transportation time, simple processing steps, and rapid production

Pending Publication Date: 2020-12-18
四川中核艾瑞特工程检测有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the tests use universal testing machines or other fixing devices to fix the test pieces, which takes a long time and the test pieces are easy to loosen, resulting in low detection efficiency and even a certain degree of danger. The existing technology also provides a One is to install the test tooling on the surface with a slope, and the base of the tooling is welded with the welding studs, and then the pressure test is carried out through a universal testing machine. Since the tooling needs to be welded with the welding studs, the number of times of use is limited, and the material inside the base after being welded It will also be affected, causing the strength of the welding place during the next welding stud to be different from the normal welding, and when multiple welding studs need to be detected, multiple tooling is required, which increases the manufacturing cost of the tooling

Method used

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  • Tool for welding stud bending test
  • Tool for welding stud bending test
  • Tool for welding stud bending test

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 As shown, a tooling for the welding stud bending test, including a top plate 1 and a wedge-shaped spacer 2, a circular through hole 3 is opened in the middle of the top plate 1, and two wedge-shaped spacers 2 are arranged on the lower surface of the top plate 1 in the opposite direction. , two wedge-shaped pads 2 wedge-shaped surfaces coincide, the wedge-shaped surface normal of the wedge-shaped pad 2 passes through the surface of the top plate 1 and the ground on the wedge-shaped pad 2 opposite to the wedge-shaped surface is parallel to the top plate 1 surface.

[0031] When the present invention is in use, as figure 2 As shown, a connecting piece with a certain length can be selected on site. When the length of the connecting piece is less than the length of the piece to be tested in the direction of the stud welding stud axis: first make the stud welding stud of the piece to be tested pass through the through hole of the top plate, and then Use con...

Embodiment 2

[0034] Such as image 3 As shown, the difference between this embodiment and Embodiment 1 is that the diameter of the through hole 3 on the top plate 1 is set to 35mm, and the end face of the end of the through hole axis of the top plate 1 is connected with a top plate support 5, and the through hole 3 on the top plate 1 is along the through hole. The radial direction of the hole 3 extends to the end surface of the top plate 1 to form a gap 4, the width of the gap 4 is set to 25mm, and the opening direction of the gap 4 is parallel to the intersection line between the top plate 1 and the top plate support 5.

[0035]The setting of the through hole and notch size makes the tooling suitable for stud welding studs of existing specifications, and the setting of the top plate support makes the tooling use in a wider environment, eliminating the need for repeated fixing of the top plate and connecting parts before the test, and the notch Set the matching method between the sample to...

Embodiment 3

[0037] Such as Figure 4 As shown, this embodiment is an improvement on the basis of Embodiment 2. The top plate support 5 is a square plate, and the two top plate support 5 are respectively connected to the end faces on both sides of the axis of the through hole 3 on the top plate 1. The top plate 1 The extension direction of the notch 4 on the top is parallel to the plate surface of the top plate support 5, and the top plate 1 and the top plate support 5 jointly form a square through hole, and a wedge-shaped spacer 2 is placed in the square through hole, and the lower end of the top plate support 5 is fixedly connected with a Bottom plate 6., also has connecting hole near the four corners of bottom plate 6.

[0038] This embodiment is an improvement on the basis of Embodiment 2. The setting of two roof supports increases the stability of the tooling and makes the bearing capacity of the tooling stronger. At the same time, the wedge-shaped pads are also limited. To prevent t...

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Abstract

The invention discloses a tool for a welding stud bending test. The problems that the test cost is reduced, tool manufacturing is saved, and stud welding stud fixing is simplified are solved. The toolcomprises a top plate and a wedge-shaped cushion block, a through hole is formed in the middle of the top plate, is matched with a crater between a stud welding stud in a to-be-tested sample and a welded piece, and is used for sleeving the stud welding stud in the to-be-tested sample; the number of the wedge-shaped cushion blocks is an even number, all the wedge-shaped cushion blocks are arrangedin the normal direction of the plate face of the top plate in a mutual contact mode, the planes, opposite to the wedge-shaped faces, of all the wedge-shaped cushion blocks are parallel to the plate face of the top plate, and the wedge-shaped faces of every two wedge-shaped cushion blocks coincide in the arrangement direction of the wedge-shaped cushion blocks. The tool has the advantages of low cost, convenience in test, easiness in manufacturing and the like.

Description

technical field [0001] The invention relates to the technical field of stud performance detection, in particular to a tool for welding stud bending test. Background technique [0002] Welding studs are high-strength and rigid fasteners with a nominal diameter of Φ10-Φ25mm and a total length of 40-300mm before welding. During the construction of nuclear power plants, welding studs are widely used. In order to ensure the safety of the entire nuclear power project, it is necessary to use welding studs with reliable quality, so welding studs need to undergo necessary testing, the most important index of which is its mechanical properties, mainly including tensile tests and bending tests. [0003] For the bending test, the current GB / T 10433-2002 "Cylindrical Head Welding Studs for Arc Stud Welding" stipulates in Appendix A: For welding studs with d≤22mm, the bending test of the welding end can be carried out. In the test, the head of the welding stud specimen can be hit (or pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/20G01N3/04
CPCG01N3/04G01N3/20
Inventor 李伟张建平陈海波黄友芬李国全高奇
Owner 四川中核艾瑞特工程检测有限公司
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