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Pressure loading device for rubber sealing ring and pressure loading test method

A technology of rubber sealing ring and loading device, applied in measuring device, using stable tension/pressure test material strength, instrument and other directions, can solve problems such as low accuracy and inability to simulate the deformation of rubber sealing ring, and achieve accurate Good performance, easy to remove rubber sealing ring, high precision effect

Active Publication Date: 2018-07-13
NO 59 RES INST OF CHINA ORDNANCE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the existing rubber sealing ring pressure loading test standard fixture and compression test method can obtain the compression set rate, they cannot simulate the actual deformation of the rubber sealing ring in the ammunition barrel, and the accuracy is not high

Method used

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  • Pressure loading device for rubber sealing ring and pressure loading test method
  • Pressure loading device for rubber sealing ring and pressure loading test method
  • Pressure loading device for rubber sealing ring and pressure loading test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Rubber sealing ring pressure loading device such as figure 2As shown, it includes a metal ring 1 and a split sleeve 2 sleeved on the metal ring 1, and the split sleeve 2 and the metal ring 1 are matched in a manner that the minimum gap is equal to zero; on the side of the metal ring 1 The wall is provided with an annular groove 4, and the width of the annular groove 4 is 95%-110% of the initial height of the rubber sealing ring (such as when the initial height of the rubber sealing ring is 3.5mm, the width of the annular groove 4 is processed to be 3.33-3.85mm), The depth of the ring groove 4 is equal to the height of the rubber sealing ring when it is under pressure during storage with the bomb (such as when the height of the rubber sealing ring is 2.6mm when it is stored with the bomb and the height is 2.6mm, the depth of the ring groove 4 is 2.6mm, this depth That is, the specified height reached by the rubber sealing ring test piece 3 after pressure loading), and t...

Embodiment 2

[0051] With reference to embodiment 1, wherein, the annular groove adopts arc groove, and the depth of arc groove is 2.6mm, and its metal ring 1 and annular groove 4 are as Figure 5 shown.

Embodiment 3

[0053] Referring to Example 1, wherein the ring groove is provided on the outer wall of the integrally formed metal ring, the metal ring 1 and the ring groove 4 are as Figure 5 shown.

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Abstract

The invention provides a pressure loading device for a rubber sealing ring and a pressure loading test method. The pressure loading device comprises a metal ring and a segmented type sleeve sleeved onthe metal ring, wherein the segmented type sleeve and the metal ring are matched by adopting a mode that the smallest gap is equal to zero; a ring groove is arranged in the side wall of the metal ring; the depth of the ring groove is equal to the height of the rubber sealing ring pressed in the storage process with ammunition, and circumferential-stress loading for the rubber sealing ring can berealized by matching of the metal ring, the ring groove and the sleeve; the loading method comprises the following sequential steps of: adopting the pressure loading device to carry out pressure loading on the rubber sealing ring, carrying out ageing test, eliminating pressure loading, measuring the height of the rubber sealing ring restoring to a free state, and calculating permanent compressiondeformation rate. By adoption of the pressure loading device for pressure loading, the actual deformation condition of the rubber sealing ring in the cartridge body can be accurately simulated and acquired.

Description

technical field [0001] The invention relates to a pressure loading test of a rubber sealing ring, in particular to a pressure loading device and a pressure loading test method for a rubber sealing ring in a cartridge body. Background technique [0002] When the rubber material is used as a sealing ring, on the one hand, it will slowly age with time, and on the other hand, it is still in a state of continuous stress, resulting in permanent deformation of the rubber sealing ring. When the compression permanent deformation rate reaches a certain level, the rubber The sealing ring will fail, resulting in poor sealing effect. [0003] The compression set rate is an index parameter that can accurately describe and reflect the performance degradation behavior of the rubber sealing ring, so the compression set rate is often used to measure the degree of performance change of the rubber sealing ring. In order to quickly obtain the performance change law of the rubber sealing ring, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/18
CPCG01N3/08G01N3/18G01N2203/0019G01N2203/0226G01N2203/0236G01N2203/0682
Inventor 张世艳肖勇王艳艳李迪凡罗天元胥泽奇黄波
Owner NO 59 RES INST OF CHINA ORDNANCE IND
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