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Fuel cell bipolar plate forming limit measuring die, testing method and application thereof

A forming limit, fuel cell technology, applied in the preparation of test samples, measuring devices, using stable tension/pressure to test the strength of materials, etc. performance, improve positioning accuracy, and increase installation efficiency

Active Publication Date: 2022-04-12
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The inventors found that currently there are many molds for the measurement of the forming limit at the micro-scale, most of which are complex in positioning, cumbersome to observe, and have relatively large errors. A new mold and testing method

Method used

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  • Fuel cell bipolar plate forming limit measuring die, testing method and application thereof
  • Fuel cell bipolar plate forming limit measuring die, testing method and application thereof
  • Fuel cell bipolar plate forming limit measuring die, testing method and application thereof

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Embodiment Construction

[0061] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0062] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0063] The structure of the punch bulging die and each component facing the fuel cell bipolar plate...

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Abstract

The invention relates to the technical field of micro-scale material forming limit, in particular to a fuel cell bipolar plate forming limit measuring die, a testing method and application thereof. The fuel cell bipolar plate forming limit measuring die comprises an upper die, a pressing plate, a lower die and a punch, the pressing plate is arranged between the upper die and the lower die, the punch is fixed to the upper die, a lead hole is formed in the center of the pressing plate, positioning holes corresponding to each other are formed in the lower portion of the pressing plate and the upper portion of the lower die, and positioning sleeves for positioning a sample are installed in the positioning holes; a through hole is formed in the center of the lower die; the upper die comprises an upper part and a lower part which are detachably connected; a spring is arranged between the lower part of the upper die and the pressing plate, and a spring is also arranged between the pressing plate and the lower die; and a test piece transmission system is arranged between the pressing plate and the lower die. The die can directly test the right side forming limit of long plates with different thicknesses, and can realize high efficiency of measurement and accuracy of results so as to improve theoretical support of plate forming in the manufacturing process.

Description

technical field [0001] The invention relates to the technical field of forming limit of micro-scale materials, in particular to a measuring die, a testing method and an application thereof for the forming limit of a fuel cell bipolar plate. Background technique [0002] With the vigorous development of new energy vehicles, more and more attention has been paid to the research of fuel cells, among which titanium alloy bipolar plates are an important part of fuel cells. In order to improve the quality and efficiency of titanium alloy bipolar plate forming, it is necessary to measure the forming limit of titanium alloy sheet accurately and efficiently. The traditional right-side forming limit measurement adopts the Marciniak method. Due to the existence of size effects, the forming limit measurement method at the macro scale is not suitable for the measurement of the forming limit of materials at the micro scale. The inventors found that currently there are many molds for the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/02G01N3/04G01N1/36
Inventor 崔青浩王继来李取浩万熠史振宇梁西昌
Owner SHANDONG UNIV
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