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Repeated bending testing equipment under constant load and method

A technology of repeated bending and constant load, applied in the field of detection, can solve problems such as mutual interference, failure to achieve constant load repeated bending performance test, etc.

Active Publication Date: 2010-02-03
SHOUGANG CORPORATION
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Problems solved by technology

[0006] The disadvantage of the above method is that when the steel strip bends under the action of the movable roller, the length of the spring will change due to the tension, the bending load and the tensile load interfere with each other during the test, and repeated bending under a constant load cannot be achieved. Performance Testing

Method used

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  • Repeated bending testing equipment under constant load and method
  • Repeated bending testing equipment under constant load and method
  • Repeated bending testing equipment under constant load and method

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Embodiment Construction

[0032] Attached below figure 2 To describe further:

[0033] The repeated bending equipment under constant load includes two parts: stretching system 1 and bending system 2.

[0034] The stretching system includes a first clamping device 11 , a second clamping device 12 , an elastic device 13 , a fixing device 14 , and a stretching loading table 15 .

[0035] The first clamping device 11 and the second clamping device 12 are respectively fixed at both ends of the sample 94 . The first clamping device 11 is fixed on the base body and remains stationary during the test. The second clamping device 12 is connected with the fixing device 14 through the elastic device 13 . Within the test load range of the elastic device 13, the relationship between tension and elongation satisfies Hooke's law. The fixing device 14 is installed on the tensile loading platform 15, and the fixing device 14 can move along the length direction of the sample 94 on the tensile loading platform 15, an...

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Abstract

The invention relates to repeated bending testing equipment under constant load and a method, belonging to the field of detection technique. The equipment comprises a drawing system and a bending system, wherein the drawing system is provided with a second clamping device connected with an elastic device and a drawing loading platform capable of rotating freely so as to realize the purposes of applying constant load to the sample and ensuring that bilateral bending occurs at effective parts; the bending system comprises a bending die, a bending working platform and a sliding groove with special track, realizes the equal-amplitude reciprocating movement of the bending working platform along the sliding groove and drives the sample to occur repeated bending at the arc of the bending die. Theinvention also discloses a testing method for carrying out repeated bending under constant load by the equipment, which can carry out repeated bending performance test under constant load on even materials and materials with welding seams.

Description

technical field [0001] The invention belongs to the technical field of detection, in particular to a repeated bending test equipment and method under constant load, which are used for bidirectional bending performance test of materials under constant load. Background technique [0002] Repeated bending test is an important method to evaluate the plastic deformation ability of materials. [0003] The traditional repeated bending test mostly uses one end of the sample 94 to be fixed, and the rest penetrates into the protrusion on the rocker arm, wherein the rocker arm is fixed on the workbench and can rotate around a fixed axis. Bending around a support with a specified radius, and then rotating the rocker arm in the opposite direction, is a repeated bending test method that can determine the plastic deformation capacity of a material during repeated bending. [0004] The disadvantage of the above method is that it can only test the bending properties of the material in a fre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/32G01N3/08G01N3/14
Inventor 张永强刘兴全章军
Owner SHOUGANG CORPORATION
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