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Small-tonnage creep strength/creep rupture strength testing machine

A long-lasting strength, testing machine technology, applied in the direction of using stable tension/pressure to test the strength of materials, etc., can solve the problems of large loading test force error, only a few MPa, and can not meet large batches, etc., to reduce the mechanical system. Error, improve accuracy, stable and reliable effect

Inactive Publication Date: 2016-11-16
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For some tests with loading loads as small as hundreds of Newtons or tens of Newtons, it is impossible to test on conventional testing machines because the loading load is too small. For some high-temperature creep / endurance tests with test temperatures above High, the loading load is generally relatively small, the minimum loading load is only a few MPa, so the conventional creep / endurance testing machine can no longer meet the test requirements of large quantities of higher performance materials due to the large error of the loading test force

Method used

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  • Small-tonnage creep strength/creep rupture strength testing machine
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  • Small-tonnage creep strength/creep rupture strength testing machine

Examples

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Embodiment 1

[0020] This embodiment illustrates the structure and working process of the testing machine of the present invention under the direct weight loading mode.

[0021] See attached Figure 1~2 As shown, this kind of small tonnage creep / durable strength testing machine includes a main frame 1, and a heating furnace 2 is fixed on the main frame 1 and can be lifted up and down along the slide rail on the main frame 1. The small tonnage refers to the testing machine The loading load of the test machine is 0.03~10kN. The loading method of the testing machine is direct loading of weights. The structural composition and loading method of this kind of testing machine for direct loading of weights are as follows:

[0022] The upper end of the upper rod is connected to the main frame 1 of the testing machine, the lower end of the upper rod is connected to the upper end of the sample, and the lower end of the sample is connected to the directly loaded boom tray 3, which is placed on the test...

Embodiment 2

[0030] This embodiment illustrates the structure and working process of the testing machine of the present invention under the lever loading mode.

[0031] See attached figure 1 , 3 As shown, this kind of small tonnage creep / durable strength testing machine includes a main frame 1, and a heating furnace 2 is fixed on the main frame 1 and can be lifted up and down along the slide rail on the main frame 1. The small tonnage refers to the testing machine The loading load of the testing machine is 0.03~10kN. The loading method of this testing machine is lever loading. The structural composition and loading method of this kind of lever loading testing machine are as follows:

[0032]Place the loading lever 9 in the base of the main machine of the testing machine, and place the loading and leveling motor 8 of the testing machine on the top of the main frame 1 of the testing machine. 1. The loading chain formed by the pull-down rod rises, the pull-down rod is connected and drives t...

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Abstract

The present invention discloses a small-tonnage creep strength / creep rupture strength testing machine. A purpose of the present invention is to provide a new testing machine structure so as to improve the testing force loading accuracy of a small-loading test and ensure the truthfulness and the reliability of testes data. The technical scheme is characterized in that a lever loading system is placed inside the host machine base of the small-tonnage creep strength / creep rupture strength testing machine, the loading transmission system of the small-tonnage creep strength / creep rupture strength testing machine is placed on the top end of the main rack of the small-tonnage creep strength / creep rupture strength testing machine, the loading lever of the small-tonnage creep strength / creep rupture strength testing machine uses a structure having a small lever ratio of 1:5-1:10, and the maximum loading testing force is not higher than 10 kN. According to the present invention, the single direct loading device and the alarm system are designed, and the minimum loading load is as small as several megapascals; and the manual unloading mechanism and the leveling mechanism are designed, such that the manual unloading and the handle leveling unloading can be used or the manual adjusting is performed to make the lever be positioned at the horizontal position and maintain the constant load when the accidental power failure occurs, such that the safety of the machine during the sample testing can be ensured.

Description

technical field [0001] The invention relates to a small-tonnage creep / durable strength testing machine, which belongs to the field of testing instruments. Background technique [0002] Creep / enduring strength testing machine is the main equipment for testing the mechanical properties of high temperature creep and enduring strength of metal materials. The loading levers of the mechanical creep / endurance strength testing machines widely used at present are all placed on the top of the main frame of the testing machine. The loading tonnage is mainly 30kN, 50kN, 100kN and other models. To load 0.4% to 0.5% of the full scale of the testing machine, different lever ratios are designed for testing machines of different tonnages. The leverage ratio of large tonnage testing machines is generally around 1:50 to 1:100. For a large-tonnage testing machine, when the loading force is less than 0.4% of its full scale, the error of the loading force will also increase, which cannot meet th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/14
CPCG01N3/08G01N3/14
Inventor 吴安民张燕明赵澎涛李影黄新跃于慧臣
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS