CN212031123U

CN212031123U - Stress fatigue-electrochemical corrosion testing device

Info

Publication number: CN212031123U
Application number: CN202020721058.6U
Authority: CN
Inventors: 陈泉志; 劳远侠; 黎怡洁; 黄彩花; 黄金蕾; 李燕妮
Original assignee: Nanning Normal University
Current assignee: Nanning Normal University
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2020-11-27
Anticipated expiration: 2030-05-06

Abstract

The utility model belongs to the technical field of material inspection, in particular to a stress fatigue-electrochemical corrosion testing device, which comprises a base, wherein a bracket is arranged on the outer ring of the base, a bracket platform is supported on the upper side of the bracket, a double-layer self-made laboratory is placed on the upper side of the bracket platform, a leak hole is arranged at the middle position inside the double-layer self-made laboratory, a telescopic rod is extended into the inside of the double-layer self-made laboratory, a platinum electrode, a reference electrode and a sample are arranged inside the double-layer self-made laboratory, the platinum electrode, the reference electrode and the sample are all connected with an electrochemical workstation through an electric wire, a tensile testing machine is arranged at the top end of the telescopic rod, support columns are arranged on two sides of the bottom end of the tensile testing machine, the electrochemical corrosion test of a metal material under alternating stress can be realized, and the purpose of more scientifically, the device is simple, convenient, low in cost and easy to realize.

Description

Stress fatigue-electrochemical corrosion testing device

Technical Field

The utility model belongs to the technical field of the material inspection, specifically be building material construction steel's comprehensive check out test set, in particular to stress fatigue-electrochemical corrosion testing arrangement.

Background

The common stress corrosion testing device can only carry out corrosion testing under a constant force stretching (extrusion) state, and mainly comprises the steps of sealing a test piece on a stretching device, then putting a test solution into a test box, and then fixing the whole test box on a stress corrosion stretching machine for testing. However, mechanical components in complex environments are subject to alternating stresses caused by mechanical vibrations, wind induced stresses, etc., which also greatly affect the useful life of the components. However, at present, it is difficult to perform a fatigue stress-electrochemical corrosion test on a material member, and a simple and convenient device is needed to test the material member, so as to evaluate the service performance of the material member in a more scientific manner in practical situations.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a stress fatigue-electrochemical corrosion testing arrangement has the stress fatigue electrochemical corrosion test research among the complex factors such as different corrosion medium, different temperatures among the simulation actual environment, and the device easy operation, with low costs, have extensive application prospect in fields such as electric wire netting, machinery.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a stress fatigue-electrochemical corrosion testing arrangement, includes the base, the support has been installed to the outer lane of base, the upside of support supports there is the pallet, double-deck self-control laboratory has been placed to the upside of pallet, the small opening has been seted up to the inside intermediate position of double-deck self-control laboratory, the telescopic link is stretched into to the inside of double-deck self-control laboratory, platinum electrode, reference electrode, sample have been placed to the inside of double-deck self-control laboratory, platinum electrode, reference electrode, sample all connect electrochemical workstation through the electric property line, tensile testing machine has been installed on the top of telescopic link, the support column has been installed to tensile testing machine's bottom both sides.

Preferably, the shape of the leak hole is a round hole, and a high-grade rubber ring is arranged around the leak hole; the leak hole is a round hole for the sample to pass through, and the periphery of the leak hole is sealed by a high-grade rubber ring so as to prevent electrolyte from seeping out.

Preferably, the double-layer homemade laboratory is provided with a double-layer structure comprising an inner layer and an outer layer; the inner layer of the double-layer self-made laboratory is provided with corrosion tanks filled with different electrolytes, and the outer layer is provided with a water bath tank, so that different heating can be realized.

Preferably, the support is in contact with the ground; the support is contacted with the ground to prevent the vibration caused by the operation of the stretching machine.

Preferably, the temperature in the double-layer homemade laboratory comprises 20-100 ℃, and the stress frequency range is 10-100 Hz; the corrosion stress test under different corrosion media can be realized.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses stress fatigue-electrochemical corrosion testing arrangement can realize the electrochemical corrosion test of metal material under alternating stress, reaches the purpose of more scientific aassessment its performance under the complex condition, and this device is simple convenient, with low costs, easy realization.

The parts of the device not involved are the same as or can be implemented using prior art.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a front view cross-sectional structural diagram of the present invention;

FIG. 2 is a schematic top view of a double-deck homemade laboratory according to the present invention;

in the figure: 1. a base; 2. a support; 3. a support pillar; 4. a tensile testing machine; 5. a leak hole; 6. a double-layer homemade laboratory; 7. a platinum electrode; 8. a reference electrode; 9. a sample; 10. an electrochemical workstation; 11. a support stand; 12. a telescopic rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-2, the present invention provides the following technical solutions: the utility model provides a stress fatigue-electrochemical corrosion testing arrangement, includes base 1, support 2 has been installed to base 1's outer lane, the upside of support 2 is supported has pallet 11, double-deck self-control laboratory 6 has been placed to pallet 11's upside, leak 5 has been seted up to double-deck self-control laboratory 6's inside intermediate position, telescopic link 12 has been stretched into to double-deck self-control laboratory 6's inside, platinum electrode 7, reference electrode 8, sample 9 have been placed to double-deck self-control laboratory 6's inside, platinum electrode 7, reference electrode 8, sample 9 all connect electrochemical workstation 10 through the electric property line, tensile testing machine 4 has been installed on the top of telescopic link 12, support column 3 has been installed to tensile testing machine 4's bottom both sides.

In this embodiment: the leak hole 5 is a round hole for a tested sample to pass through, the periphery of the leak hole 5 is sealed by a high-grade rubber ring so as to prevent electrolyte from seeping, the inner layer of the double-layer self-made laboratory 6 is a corrosion tank filled with different electrolytes, the outer layer of the double-layer self-made laboratory 6 is a water bath tank which can realize different heating, and the double-layer self-made laboratory is in contact with the ground through the support 2 so as to prevent vibration caused by the operation of the stretching machine.

Specifically, the leak hole 5 is a circular hole, and a high-grade rubber ring is arranged around the leak hole 5; the leak hole 5 is a round hole for the sample to pass through, and a high-grade rubber ring is used for sealing the periphery of the leak hole 5 so as to prevent electrolyte from seeping out.

Specifically, the double-layer homemade laboratory 6 is provided with a double-layer structure comprising an inner layer and an outer layer; the inner layer of the double-layer self-made laboratory 6 is a corrosion tank filled with different electrolytes, and the outer layer is a water bath tank, so that different heating can be realized.

Specifically, the support 2 is in contact with the ground; the support 2 is in contact with the ground to prevent vibration caused by the operation of the drawing machine.

Specifically, the temperature in the double-layer homemade laboratory 6 is 20-100 ℃, and the stress frequency range is 10-100 Hz; the corrosion stress test under different corrosion media can be realized.

The working principle and the using process of the invention are as follows: firstly, metal material used for fatigue stress-electrochemical corrosion test is subjected to wire cutting, a sample with standard size is prepared, before the test, the sample is polished and cleaned, the sample passes through a round hole at the bottom of a test chamber and is linked with a lower clamp of a tensile testing machine, and is sealed by a sealing ring and a rubber gasket, then, prepared corrosive solution is injected into a corrosive medium chamber, finally, an upper chuck of the testing machine is reduced, the upper end of the sample is clamped, a reference electrode, a counter electrode and a working electrode of an electrochemical workstation are respectively connected, test parameters are set, a temperature heating and control device is arranged in a water bath layer container, required temperature is set, required frequency is adjusted in a control system of the tensile testing machine, and simultaneously, the electrochemical workstation and a stretching machine are started to carry out fatigue stress-electrochemical corrosion test on the sample, the electrochemical behavior change trend under the fatigue stress is obtained.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A stress fatigue-electrochemical corrosion testing device is characterized in that: including base (1), support (2) have been installed to the outer lane of base (1), the upside of support (2) is supported there is pallet (11), double-deck self-control laboratory (6) have been placed to the upside of pallet (11), small opening (5) have been seted up to the inside intermediate position of double-deck self-control laboratory (6), telescopic link (12) have been stretched into to the inside of double-deck self-control laboratory (6), platinum electrode (7), reference electrode (8), sample (9) have been placed to the inside of double-deck self-control laboratory (6), platinum electrode (7), reference electrode (8), sample (9) all connect electrochemical workstation (10) through the electric property line, tensile testing machine (4) have been installed on the top of telescopic link (12), support column (3) have been installed to the bottom both sides of tensile testing machine (4).

2. The stress fatigue-electrochemical corrosion test apparatus of claim 1, wherein: the shape of the leak hole (5) is a round hole, and a high-grade rubber ring is arranged around the leak hole (5).

3. The stress fatigue-electrochemical corrosion test apparatus of claim 1, wherein: the double-layer homemade laboratory (6) is provided with a double-layer structure comprising an inner layer and an outer layer.

4. The stress fatigue-electrochemical corrosion test apparatus of claim 1, wherein: the support (2) is in contact with the ground.

5. The stress fatigue-electrochemical corrosion test apparatus of claim 1, wherein: the temperature in the double-layer homemade laboratory (6) is 20-100 ℃, and the stress frequency range is 10-100 Hz.