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A bar creep extensometer

An extensometer, bar technology, applied in the direction of applying stable tension/pressure to test the strength of materials, etc., to achieve the effect of simple operation, good versatility, and fast and convenient clamping

Active Publication Date: 2017-07-14
中航试金石检测科技(大厂)有限公司
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the operating temperature of bar creep extensometers used in China is generally below 1100°C. With the development of material science, it can no longer meet the test requirements of metal high-temperature materials at a test temperature of 1100°C to 1200°C.

Method used

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  • A bar creep extensometer
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Experimental program
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Effect test

Embodiment Construction

[0017] The present invention will be further described below in conjunction with accompanying drawing:

[0018] See attached Figure 1-9As shown, the extensometer is composed of an upper extensometer frame 3, a lower extensometer frame 4, a deformation measurement sensor 8, a bar sample clamping pad 2 and a spring 6. Before the test, first, two upper extension rods 10 with the same shape and size are positioned and welded in the two rectangular parallelepiped openings on the outside of the collar clamp 17 of the upper extensometer frame, and the two range adjustment screw positioning brackets 13 are respectively fixed on the two sides with screws. The extensometer scale adjustment screw hole 26 on the outside of the upper extension rod, and the positions of the two range adjustment screw positioning brackets 13 are facing each other; an inverted range adjustment screw 11 is respectively installed on the two range adjustment screw positioning brackets 13, and A lock nut 12 is ...

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Abstract

The invention discloses a mechanical creep extensometer and aims to provide a new extensometer which can clamp bar samples with different diameters and different gauge lengths. The gist of the technical solution is that there are five extensometer gauge length adjustment screw holes on each of the two upper extension rods, which are used to adjust the position of the range adjustment screw positioning bracket to adjust the gauge length of the extensometer, and the clampable gauge length is 16mm ~100mm bar sample; designed different sizes of bar sample clamping pads, by replacing the bar sample clamping pads, it can clamp bar samples with a diameter of φ4~φ10; the extensometer Choose DZ22 or DD3, DD6 materials, which can be used for creep tests at all temperatures below 1200°C. The extensometer can be used on different types of test equipment and has good versatility.

Description

technical field [0001] The invention relates to a deformation measuring device for testing the creep mechanical properties of metal materials, which belongs to the field of testing instruments. Background technique [0002] The creep test of metallic materials is a high-temperature tensile test performed under constant temperature and constant load. The extensometer is an indispensable part of the creep mechanical performance test of metal materials. At present, the extensometers used for the creep test of metal materials at home and abroad are all extensometers of one specification and one model for the creep mechanical performance test of the bar sample. The commonly used bar creep extensometer models are as follows: φ5×25, φ8×50, φ10×100. One test equipment needs to be equipped with several different types of bar creep extensometers. Only by replacing the bar creep extensometers of corresponding models can the creep mechanical properties of bar samples of different spec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/18
Inventor 钟汉萍吴安民张燕明黄京红李影
Owner 中航试金石检测科技(大厂)有限公司
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