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High-temperature biaxial tension device

A biaxial stretching and high temperature technology, applied in the field of high-strength steel hot forming experiments, can solve the problems of inability to achieve bidirectional variable proportional loading, inconsistent stretching speed, and high price, and achieve simple structure, high precision and economical price. Effect

Inactive Publication Date: 2015-02-18
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the problems that the existing two-way stretching test equipment is expensive, cannot be carried out at high temperature, cannot realize two-way variable ratio loading, and the stretching speed is not constant during the stretching process, and provides A High Temperature Biaxial Stretching Device

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] Example 1: In the process of realizing bidirectional stretching, the ratio of speed in the horizontal and vertical directions is 1:1 and the stretching speed remains unchanged.

[0097] The working process includes the following steps:

[0098] 1. Use a cutting machine to cut a 350mm×90mm cross-shaped test piece blank with a material of 22MnB5, and process it into a test piece 28;

[0099] 2. Use a mechanical device to move the test piece 28 to the central position of the upper sliding block 6, the lower sliding block 17, the left sliding block 26 and the right sliding block 11, and use the test piece fixing bolt 29 and the test piece fixing plate 33 to place the test piece The upper fixed side, the lower fixed side, the left fixed side and the right fixed side of 28 carry out bolt connection with upper sliding block 6, lower sliding block 17, left sliding block 26, right sliding block 11 successively, thereby clamping test piece 28.

[0100] 3. Turn the right gear con...

Embodiment 2

[0104] Example 2: In the process of realizing bidirectional stretching, the ratio of speed in the horizontal and vertical directions is 1:2 and the stretching speed remains unchanged.

[0105] 1. Use a cutting machine to cut a 350mm×90mm cross-shaped test piece blank with a material of 22MnB5, and process it into a test piece 28;

[0106] 2. Use a mechanical device to move the test piece 28 to the central position of the upper sliding block 6, the lower sliding block 17, the left sliding block 26, and the right sliding block 11, and use the test piece fixing bolt 29 and the test piece fixing plate 33 to place the test piece The upper fixed side, the lower fixed side, the left fixed side and the right fixed side of 28 carry out bolt connection with upper sliding block 6, lower sliding block 17, left sliding block 26, right sliding block 11 successively, thereby clamping test piece 28.

[0107] 3. Turn the right gear control handle 14 so that the right No. 2 open slot of the rig...

Embodiment 3

[0111] Example 3: In the process of realizing bidirectional stretching, the ratio of speed in the horizontal and vertical directions is 1:3 and the stretching speed remains unchanged.

[0112] 1. Use a cutting machine to cut a 350mm×90mm cross-shaped test piece blank with a material of 22MnB5, and process it into a test piece 28;

[0113] 2. Use a mechanical device to move the test piece 28 to the central position of the upper sliding block 6, the lower sliding block 17, the left sliding block 26 and the right sliding block 11, and use the test piece fixing bolt 29 and the test piece fixing plate 33 to place the test piece The upper fixed side, the lower fixed side, the left fixed side and the right fixed side of 28 carry out bolt connection with upper sliding block 6, lower sliding block 17, left sliding block 26 and right sliding block 11 successively, thereby clamping test piece 28.

[0114] 3. Turn the right gear control handle 14 so that the right No. 3 open slot of the r...

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Abstract

The invention discloses a high-temperature biaxial tension device and solves problems that devices in the prior art cannot perform tensioning at the high temperature, cannot realize biaxial variable-proportion loading, are not constant in tension speed and the like. The device comprises a support, a tension mechanism, a transmission mechanism and a gear control mechanism, wherein a No.1 support, a No.2 support, a No.3 support and a No.4 support of the support are sequentially arranged on a same plane, every two adjacent supports are symmetrical and identical, a right support fixing plate of the support is welded at right ends of the No.1 support and the No.2 support, and a left support fixing plate is welded at left ends of the No.3 support and the No.4 support; the tension mechanism is mounted and glidingly connected onto the support; the transmission mechanism is mounted and glidingly connected tonto the support through a power transmission block of the transmission mechanism, the lower end of a power transmission rod of the transmission mechanism is welded on a lower sliding block of the tension mechanism, a right power output rod and a left power output rod of the transmission mechanism are glidingly connected with the gear control mechanism, and the gear control mechanism is mounted on a right rotating shaft and a left rotating shaft of the tension mechanism through bearings.

Description

technical field [0001] The invention relates to a test device in the technical field of high-strength steel hot forming experiments, more precisely, the invention relates to a high-temperature biaxial stretching device. Background technique [0002] Since the establishment of plate and shell theory, more and more plates and shells have been applied to various fields. In order to solve their structural and performance problems, since the 1940s, more and more people have devoted themselves to the research of "two-way tensile test method". ". With the popularization of high-strength steel in automobile steel, the method of obtaining the high-temperature forming limit diagram of high-strength steel has become the main research object of scholars. The biaxial tension theory is introduced into this field, and the plane stress state is simulated by using the biaxial tension state. In order to obtain the forming limit diagram, more and more people pay more and more attention to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/18G01N3/02
Inventor 庄蔚敏解东旋李冰娇齐健华田野敖文宏闫雪燕郭帅李晓鹏李想
Owner JILIN UNIV
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