High-temperature stress corrosion test device for metal material

Abstract

A high-temperature stress corrosion testing device for metal materials comprises a heating furnace, a plurality of sliding holes are formed in the upper end face of the heating furnace, sliding barrels with the two ends sealed are arranged in the sliding holes in a sliding mode, rectangular penetrating holes are formed in the circumferential sides of the sliding barrels, hydraulic cylinders and clamps arranged at the piston ends of the hydraulic cylinders are oppositely arranged in the sliding barrels and on the bottom walls of the interiors of the sliding barrels, and the rectangular penetrating holes are communicated with the rectangular penetrating holes. When the bottom of the sliding cylinder is contacted with the bottom wall in the heating furnace, the top of the sliding cylinder is matched and sealed with the sliding hole. According to the utility model, the plurality of sliding barrels capable of sliding in or out are arranged in the heating furnace, the sliding barrels can be matched with the hydraulic cylinder and the clamp to clamp and stretch the test sample, and the corresponding test sample can be directly drawn out from the heating furnace by drawing the sliding barrels, so that the loss of a large amount of heat in the heating furnace can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of metal testing, in particular to a high-temperature stress corrosion testing device for metal materials. Background Art

[0002] High-temperature stress corrosion testing (HSC) is an important material performance testing method used to evaluate the corrosion resistance of metal materials subjected to both high temperatures and stress. This test is crucial for ensuring the stability and durability of metal materials in specific operating environments.

[0003] When testing multiple metal samples, a large heating furnace is usually used, and multiple sets of fixtures are set up inside. During the test, multiple samples are fixed on multiple fixtures and then tested. If the test time of these samples is different, they need to be fixed or disassembled multiple times in batches. Since disassembly is relatively complicated, it takes a certain amount of time. During this process, the opening of the heating furnace will cause a large amount of heat loss, which has a great impact on the accuracy of the test. Utility Model Content

[0004] The purpose of the utility model is to provide a high-temperature stress corrosion testing device for metal materials, which can prevent the temperature in the heating furnace from dropping significantly when part of the sample is disassembled, thereby ensuring the accuracy of the test.

[0005] In order to solve the deficiencies of the above-mentioned technical problems, the utility model adopts the following technical solutions: a high-temperature stress corrosion testing device for metal materials, comprising a heating furnace, wherein the upper end surface of the heating furnace is provided with a plurality of sliding holes, wherein sliding cylinders with sealed ends are slidingly provided in the sliding holes, wherein the peripheral sides of the sliding cylinders are provided with rectangular through-holes, wherein the interior and the inner bottom wall of the sliding cylinders are relatively provided with a hydraulic cylinder and a clamp arranged at the piston end of the hydraulic cylinder, wherein when the bottom of the sliding cylinder contacts the inner bottom wall of the heating furnace, the top of the sliding cylinder cooperates with the sliding hole to seal.

[0006] As a further optimization of the high-temperature stress corrosion testing device for metal materials of the utility model, heating wires for heating are uniformly distributed on the inner wall of the heating furnace.

[0007] As a further optimization of the high-temperature stress corrosion testing device for metal materials of the utility model, the heating furnace is provided with a heating pipe connected to an external heating machine.

[0008] As a further optimization of the high-temperature stress corrosion testing device for metal materials of the utility model, a transparent observation window is provided on the heating furnace.

[0009] As a further optimization of the high-temperature stress corrosion testing device for metal materials of the utility model, a handle is provided on the upper end surface of the slide cylinder.

[0010] As a further optimization of the high-temperature stress corrosion testing device for metal materials of the utility model, a sealing ring is embedded in the circumference of the upper portion of the slide cylinder.

[0011] As a further optimization of the high-temperature stress corrosion testing device for metal materials of the utility model, an external thread is provided on the circumference of the lower portion of the slide cylinder, and an internal thread matching the thread is provided in the slide hole.

[0012] As a further optimization of the high-temperature stress corrosion testing device for metal materials of the utility model, the shell of the heating furnace is a hollow structure, and the hollow cavity of the shell is filled with thermal insulation material.

[0013] The utility model has the following beneficial effects: the utility model arranges a plurality of slides that can slide in or out of the heating furnace, and the slides can cooperate with the hydraulic cylinder and the clamp to clamp and stretch the sample. Pulling the slides can directly pull the corresponding test sample out of the heating furnace, which can avoid a large amount of heat loss in the heating furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the structure of the test device in Example 1;

[0015] Figure 2 Schematic diagram of the cross-sectional structure of the test device in Example 1;

[0016] Figure numerals: 1. heating furnace, 2. slide cylinder, 3. handle, 4. slide hole, 5. transparent observation window, 6. hydraulic cylinder, 8. connecting rod, 9. clamp, 10. rectangular through hole. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0018] Example 1

[0019] like Figure 1-2 As shown, the utility model provides a high-temperature stress corrosion testing device for metal materials, which can perform high-temperature stress corrosion tests on multiple metal samples and reduce fluctuations in heating temperature during the installation and disassembly of the samples.

[0020] The test apparatus in this utility model comprises a heating furnace 1 and multiple slides 2 that can slide in and out of the furnace 1. The furnace 1 can simulate the high temperature and gas environment required for the test. The slides 2 are equipped with a stretching mechanism that can apply force and stretch to the metal specimens. With the slides 2 positioned within the furnace 1, the stretching mechanism stretches the metal specimens after the furnace 1 simulates the test environment parameters, allowing for high-temperature stress corrosion testing.

[0021] In this utility model, the heating furnace 1 is cylindrical in shape. To ensure self-heating, heating wires or heating pipes connected to an external heating machine can be evenly distributed along the inner wall of the heating furnace 1. Furthermore, to simulate the test gas environment, the furnace 1 is also equipped with external gas injection holes. During the test, simulated gas is injected into the furnace to simulate a corrosive environment.

[0022] In the present invention, the upper end surface of the heating furnace 1 is provided with sliding holes 4 for all slides 2 to slide vertically. The sliding holes 4 enable the slides 2 to slide vertically, and can slide into or out of the heating furnace 1. The stretching mechanism in the slide 2 includes hydraulic cylinders 6 provided on the top and bottom walls of the slide 2. The two hydraulic cylinders 6 are arranged opposite each other, and the piston ends thereof are provided with clamps 8 for clamping the ends of the specimens. Rectangular through-holes 10 are provided on the circumferential side of the slide 2, which enable the metal specimen to enter the slide 2. The metal specimen can be fixed in the slide 2 by the two clamps 8. During the test, the piston ends of the two hydraulic cylinders 6 retract, thereby stretching the metal specimen.

[0023] When in use, first pull out the slide 2 where the metal sample needs to be installed, and then fix the metal sample in the slide 2 through the clamp 8, and then start the test environment simulation in the heating furnace 1. After the simulation is completed, start the hydraulic cylinder 6 and perform a tensile test on the metal sample under the simulated environment. In this process, if some metal samples have completed the test, the corresponding slide 2 can be pulled out so that most of the slide 2 is pulled out of the heating furnace 1. The staff wears thermal insulation protective gear to pull out the metal sample. When disassembling the metal sample, the bottom of the slide 2 needs to be located in the slide hole 4 to ensure sealing. This can avoid a large amount of heat loss, will not have a significant impact on the temperature inside the heating furnace 1, and avoid interfering with the test of other samples.

[0024] It is important to emphasize that the length of the slide 2 is consistent with the length from the inner wall to the top of the heating furnace 1. When the bottom of the slide 2 contacts the bottom wall of the heating furnace 1, the top of the slide 2 and the slide hole 4 form a seal, preventing heat loss from the heating furnace 1. A sealing ring is embedded around the upper circumference of the slide 2. The provision of the sealing ring improves the sealing effect between the slide 2 and the slide hole 4.

[0025] In the present invention, the shell of the heating furnace 1 is a hollow structure, and the hollow chamber of the shell is filled with heat-insulating material. In order to facilitate the pulling and drawing of the slide 2, a handle 3 is provided on the upper end surface of the slide 2.

[0026] Example 2

[0027] This embodiment provides a high-temperature stress corrosion testing device for metal materials. Most of the mechanisms of this testing device are identical to those of the embodiment, with the following differences: The lower periphery of the slide 2 is provided with external threads, and the slide hole 4 is provided with internal threads that mate with these threads. As the slide 2 is lifted out of the heating furnace 1, the externally threaded body of the slide 2 comes into contact with the internal threads. Then, by rotating the slide 2, it is threadedly connected to the slide hole 4, thereby fixing the position of the slide 2 and temporarily securing it in the slide hole 4. The slide hole 4 also acts as a seal, reducing heat loss within the heating furnace 1.

[0028] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A high-temperature stress corrosion testing device for metal materials, comprising a heating furnace (1), characterized in that: The upper end surface of the heating furnace (1) is provided with a plurality of sliding holes (4), and a sliding cylinder (2) with sealed ends is slidably provided in each of the sliding holes (4). A rectangular through-hole (10) is provided on the peripheral side of the sliding cylinder (2). A hydraulic cylinder (6) and a clamp (8) arranged at the piston end of the hydraulic cylinder (6) are provided relative to the interior and the inner bottom wall of the sliding cylinder (2). When the bottom of the sliding cylinder (2) contacts the inner bottom wall of the heating furnace (1), the top of the sliding cylinder (2) cooperates with the sliding hole (4) for sealing.

2. A high temperature stress corrosion testing device for metal materials according to claim 1, characterized in that: The inner wall of the heating furnace (1) is evenly distributed with heating wires for heating.

3. The high temperature stress corrosion testing device for metal materials according to claim 1, characterized in that: The heating furnace (1) is provided with a heating pipe connected to an external heating machine.

4. The high temperature stress corrosion testing device for metal materials according to claim 1, characterized in that: A transparent observation window (5) is provided on the heating furnace (1).

5. The high temperature stress corrosion testing device for metal materials according to claim 1, characterized in that: The upper end surface of the slide (2) is provided with a handle (3).

6. The high temperature stress corrosion testing device for metal materials according to claim 1, characterized in that: A sealing ring is embedded on the circumference of the upper portion of the slide cylinder (2).

7. The high temperature stress corrosion testing device for metal materials according to claim 1, characterized in that: The lower circumference of the slide cylinder (2) is provided with an external thread, and the slide hole (4) is provided with an internal thread that matches the external thread.

8. The high temperature stress corrosion testing device for metal materials according to claim 1, characterized in that: The shell of the heating furnace (1) is a hollow structure, and the hollow cavity of the shell is filled with heat-insulating material.

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