Sample tool suitable for high-temperature hardness test and high-temperature hardness test equipment

Abstract

The utility model discloses a sample tool suitable for high-temperature hardness test and high-temperature hardness test equipment, the sample tool comprises a heat conduction groove body used for placing a sample, the sample is indirectly heated by heating the heat conduction groove body, a first limiting mechanism is arranged at one end of the heat conduction groove body, and a second limiting mechanism is arranged at the other end of the heat conduction groove body. The second limiting mechanism is arranged at one end or the other end of the heat conduction groove body, is parallel to the first limiting mechanism, avoids the sample, and is used for assisting the temperature measurement module to approach a measurement point of the sample; according to the sample tool suitable for the high-temperature hardness test, a sample is fixed in the heat conduction groove body through the first limiting mechanism, and the sample is indirectly heated by heating the heat conduction groove body, so that the sample is uniformly heated, non-uniform heating of the sample caused by direct heating of the sample is avoided, and the reliability of test data is ensured. The second limiting mechanism enables the temperature measuring module to keep stable after approaching the measuring point, and hardness testing can be carried out when the temperature of the measuring point reaches a preset value.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the metal material high temperature vickers hardness test field technical field, more specifically, it relates to a kind of sample tool and high temperature hardness testing equipment suitable for high temperature hardness test. BACKGROUND

[0002] As a kind of conventional mechanical property test, hardness sample plays an especially important role in evaluating the mechanical properties of materials, with the development of industrial equipment towards high temperature, high pressure, high load, traditional room temperature mechanical property test cannot meet the demand.High temperature hardness test becomes an important means to replace part of time-consuming test (such as endurance strength test) due to its rapidity and strong repeatability, and promotes the standardization of material high temperature performance research.For example: (1) gas turbine engine blade, rocket nozzle, high temperature sealing element and other components need to work in an environment of more than 1000 DEG C for a long time, and high temperature hardness test can evaluate the deformation resistance and wear resistance of materials at high temperature.By testing the high temperature hardness of WC-Co hard alloy, the mechanical stability of the alloy in high temperature environment is verified, and the reliability of aerospace equipment is ensured.(2) Engine cylinder, exhaust valve, brake system and other components are prone to thermal fatigue and oxidation under continuous high temperature, and high temperature hardness test is used to screen high temperature resistant materials and optimize design.By testing the high temperature hardness peak temperature of high-carbon high-vanadium high-speed steel, the heat treatment process of engine materials is improved.(3) In the development of new alloys, ceramics and coatings, high temperature hardness data are used to verify the composition design and process optimization effect.Silicone rubber roller is tested by high temperature hardness to ensure its heat resistance and wear resistance in aluminum plate strip production line.

[0003] But conventional hardness test does not meet the requirement of high temperature test, but high temperature hardness tester is not used frequently, and the purchase cost is high and uneconomical.Therefore, in order to adapt to high temperature hardness test, auxiliary tooling capable of making conventional hardness tester perform high temperature hardness test needs to be designed. UTILITY MODEL CONTENT

[0004] The utility model aims at the deficiency existing in prior art, provides a kind of sample tool suitable for high temperature hardness test, solves the problem that the auxiliary tooling capable of making conventional hardness tester perform high temperature hardness test needs to be designed to adapt to high temperature hardness test of existing.

[0005] To achieve the above object, the utility model provides a kind of sample tool suitable for high temperature hardness test, comprising:

[0006] Heat conduction groove body, the heat conduction groove body is used to place sample, and sample is indirectly heated by heating the heat conduction groove body;

[0007] A first limiting mechanism is arranged at one end of the heat-conducting groove body and is used to press the sample against the inner wall of the end of the heat-conducting groove body away from the first limiting mechanism.

[0008] A second limiting mechanism is arranged at one end of the heat-conducting groove body and is arranged in parallel with the first limiting mechanism to avoid the sample and is used to assist the temperature measuring module to approach the measurement point of the sample.

[0009] Optionally, the heat-conducting groove body comprises a high-temperature alloy block, and a square groove is arranged on the high-temperature alloy block and is used to place the sample.

[0010] Optionally, the first limiting mechanism comprises:

[0011] A first top rod is arranged at one end of the heat-conducting groove body and is used to press the sample against the inner wall of the end of the heat-conducting groove body away from the first limiting mechanism.

[0012] Optionally, the temperature measuring module comprises a thermocouple, and a hollow rotor is arranged on the side wall of the heat-conducting groove body, the thermocouple is arranged in the hollow rotor, and the angle of the thermocouple can be adjusted by rotating the hollow rotor.

[0013] Optionally, the second limiting mechanism comprises:

[0014] A second top rod is arranged at one end of the heat-conducting groove body and is used to press the hollow rotor against the side wall of the heat-conducting groove body to limit the rotation of the hollow rotor.

[0015] Optionally, the inner wall and the outer wall of the heat-conducting groove body are provided with corresponding scale coordinates.

[0016] Optionally, the heat-conducting groove body is detachably connected to the detection table of the hardness testing machine.

[0017] The utility model also provides a high temperature hardness testing equipment, including:

[0018] A hardness tester;

[0019] The sample tool suitable for high-temperature hardness testing is arranged on the detection table of the hardness tester.

[0020] Optionally, a heating module is further arranged on the outer side of the heat-conducting groove body.

[0021] Optionally, the heating module is a laser heating instrument, and the laser heating instrument heats the outer wall of the heat-conducting groove body away from the first limiting mechanism.

[0022] The utility model provides a sample tool suitable for high temperature hardness test, its beneficial effect lies in:

[0023] The sample tool suitable for high temperature hardness test fixes the sample in the heat conduction groove body through the first limiting mechanism, indirectly heats the sample by heating the heat conduction groove body, makes the sample even heat, avoids unevenly heating the sample by directly heating the sample, guarantees the reliable test data.

[0024] Other features and advantages of the utility model will be described in the following specific embodiment part in detail. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and other objects, features and advantages of the utility model will become more apparent from the following detailed description of exemplary embodiments of the utility model, taken in conjunction with the accompanying drawings in which like reference characters commonly refer to the same or similar elements throughout the drawings.

[0026] Figure 1 The structure schematic drawing of the sample tool suitable for high temperature hardness test according to one embodiment of the utility model is shown.

[0027] BRIEF DESCRIPTION OF DRAWINGS

[0028] 1, heat conduction groove body;2, first limiting mechanism;3, second limiting mechanism;4, temperature measurement module;5, sample;6, heating module;7, hollow rotor. DETAILED DESCRIPTION

[0029] The preferred embodiments of the utility model will be described in more detail below. Although the preferred embodiments of the utility model are described below, it should be understood that the utility model can be realized in various forms and should not be limited by the embodiments set forth here. On the contrary, these embodiments are provided in order to make the utility model more thorough and complete, and to convey the scope of the utility model to the skilled in the art completely.

[0030] As Figure 1 Shown, a sample tool suitable for high temperature hardness test, comprising:

[0031] Heat conduction groove body 1, heat conduction groove body 1 is used for placing sample 5, indirectly heats sample 5 by heating heat conduction groove body 1;

[0032] First limiting mechanism 2, first limiting mechanism 2 is arranged at one end of heat conduction groove body 1, is used for extruding sample 5 to adhere to the inner wall of the end of heat conduction groove body 1 away from first limiting mechanism 2;

[0033] The second limiting mechanism 3 is arranged at one end or the other end of the heat conduction groove body 1, and is arranged in parallel with the first limiting mechanism 2 to avoid the sample 5, and is used for assisting the temperature measurement module 4 to approach the measurement point of the sample 5.

[0034] Specifically, the sample 5 is fixed in the heat conduction groove body 1 through the first limiting mechanism 2, the sample 5 is indirectly heated by heating the heat conduction groove body 1, the sample 5 is uniformly heated, direct heating of the sample 5 is avoided, and the sample 5 is not uniformly heated, and the test data is reliable. The second limiting mechanism 3 keeps the temperature measurement module stable after approaching the measurement point, for example, through extrusion, clamping, adsorption and the like, and when the temperature of the measurement point reaches a preset value, the hardness test can be performed.

[0035] Further, the heat conduction groove body 1 is subjected to vertical extrusion force during the experiment, so it is necessary to fix the heating after adjusting the position on the experiment table, and laser heating, torch heating and the like can be used according to different measurement materials and measurement temperatures. The sample 5 is not exposed to the heat conduction groove body 1, fragments are prevented from flying out of the heat conduction groove body 1 when an accident occurs during the test, and safety is improved.

[0036] In the embodiment, the heat conduction groove body 1 includes a high-temperature alloy block, and a square groove is arranged on the high-temperature alloy block and used for placing the sample 5.

[0037] Specifically, the high-temperature alloy block is used to ensure that the heating is heated and the heat transfer is fast and uniform.

[0038] In the embodiment, the first limiting mechanism 2 includes:

[0039] A first top rod, one end of the first top rod is provided with a driving part, and the other end of the first top rod extrudes the sample 5 through the side wall of the heat conduction groove body 1.

[0040] Specifically, the first top rod is threadedly connected with the heat conduction groove body 1 to tightly extrude the sample 5.

[0041] In the embodiment, the temperature measurement module 4 includes a thermocouple, and a hollow rotor 7 is rotationally arranged on the side wall of the heat conduction groove body 1, and the thermocouple is arranged in the hollow rotor 7, and the angle of the thermocouple can be adjusted by rotating the hollow rotor 7.

[0042] Specifically, the hollow rotor 7 is spherical and is provided with an axial through hole, and the thermocouple is arranged in the through hole. The temperature of the measurement point is monitored in real time by the thermocouple, the angle of the thermocouple is adjusted by the hollow rotor 7, and the length of the thermocouple passing through the hollow rotor 7 is adjusted, so that the thermocouple approaches the measurement point, and the temperature measurement of different samples is adapted.

[0043] In the embodiment, the second limiting mechanism 3 includes:

[0044] The second top rod is provided with a driving part at one end, and the other end of the second top rod extrudes the hollow rotor 7 through the side wall of the heat conduction groove body 1, so as to limit the rotation of the hollow rotor 7.

[0045] Specifically, the hollow rotor 7 is extruded by the second top rod, and the angle of the thermocouple is limited.

[0046] In the embodiment, the inner wall and the outer wall of the heat conduction groove body 1 are provided with corresponding scale coordinates.

[0047] Specifically, the heating area is adjusted by the scale coordinates inside and outside, so that the heating point is close to the center of the sample 5.

[0048] In the embodiment, the heat conduction groove body 1 is detachably connected to the detection table of the hardness tester.

[0049] Specifically, the heat conduction groove body 1 is provided in different specifications to adapt to the hardness testing of different materials.

[0050] Further, the size, material and wall thickness of the heat conduction groove body 1 of different specifications are designed according to the needs.

[0051] The utility model also provides a high temperature hardness testing equipment, which comprises:

[0052] The hardness tester;

[0053] The sample tool suitable for high temperature hardness testing is arranged on the detection table of the hardness tester.

[0054] Specifically, the ordinary hardness tester is combined with the sample tool suitable for high temperature hardness testing to perform high temperature hardness testing.

[0055] In the embodiment, the heating module 6 is arranged on the outer side of the heat conduction groove body 1.

[0056] Specifically, the heat conduction groove body 1 is heated by the heating module 6, and the sample 5 is heated.

[0057] In the embodiment, the heating module 6 is a laser heating instrument, and the laser heating instrument heats the outer wall of the heat conduction groove body 1 away from the first limiting mechanism 2.

[0058] Specifically, the laser heating instrument directly irradiates one end of the heat conduction groove close to the sample 5, so as to facilitate rapid heating and reduce heat transfer loss.

[0059] The sample tool suitable for high temperature hardness testing is used in the hardness testing.

[0060] The heat conduction groove body 1 is fixed on the detection table of the hardness testing machine, the sample 5 is placed into the heat conduction groove, is clamped and positioned through the first top rod, then the temperature measuring module 4 is adjusted, the temperature measuring module 4 is close to the measurement, and is locked and positioned through the second top rod. Start the laser heating instrument, the heat conduction groove body 1 is heated and the sample 5 is heated through heat transfer, direct irradiation of the sample 5 is avoided, the sample 5 is locally overheated or unevenly heated. When the temperature measuring module 4 detects that the temperature of the measurement point reaches the requirement, the hardness testing machine is started to test. After testing, the laser heating instrument is turned off, and the sample 5 is removed after cooling.

[0061] The above has described various embodiments of the present application, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A sample fixture suitable for high-temperature hardness testing, characterized in that, include: A heat-conducting tank, which is used to place a sample and indirectly heats the sample by heating the heat-conducting tank; A first limiting mechanism is disposed at one end of the heat-conducting groove body, and is used to squeeze the sample to fit against the inner wall of the end of the heat-conducting groove body away from the first limiting mechanism. The second limiting mechanism is disposed at one end or the other end of the heat conduction tank. The second limiting mechanism is arranged parallel to the first limiting mechanism to avoid the sample and is used to assist the temperature measuring module in approaching the measurement point of the sample.

2. The sample fixture for high-temperature hardness testing according to claim 1, characterized in that, The heat-conducting groove includes a high-temperature alloy block, on which a square groove is provided for placing a sample.

3. The sample fixture for high-temperature hardness testing according to claim 1, characterized in that, The first limiting mechanism includes: A first push rod, one end of which is provided with a driving part, and the other end of which passes through the side wall of the heat-conducting groove to compress the sample.

4. The sample fixture for high-temperature hardness testing according to claim 1, characterized in that, The temperature measuring module includes a thermocouple, and a hollow rotor is rotatably mounted on the side wall of the heat-conducting groove. The thermocouple passes through the hollow rotor, and the angle of the thermocouple can be adjusted by rotating the hollow rotor.

5. The sample fixture for high-temperature hardness testing according to claim 4, characterized in that, The second limiting mechanism includes: The second push rod has a drive unit at one end and the other end passes through the side wall of the heat-conducting groove to press the hollow rotor, thereby restricting the rotation of the hollow rotor.

6. The sample fixture for high-temperature hardness testing according to claim 1, characterized in that, The inner and outer walls of the heat-conducting groove are provided with corresponding scale coordinates.

7. The sample fixture for high-temperature hardness testing according to claim 1, characterized in that, The heat-conducting groove is detachably connected to the testing platform of the hardness testing machine.

8. A high-temperature hardness testing device, characterized in that, include: Hardness tester; The sample fixture for high-temperature hardness testing according to any one of claims 1-7, wherein the sample fixture for high-temperature hardness testing is disposed on the testing stage of the hardness tester.

9. The high-temperature hardness testing equipment according to claim 8, characterized in that, It also includes a heating module, which is disposed on the outside of the heat-conducting groove.

10. The high-temperature hardness testing equipment according to claim 9, characterized in that, The heating module is a laser heater, which heats the outer wall of the heat-conducting groove that is away from the first limiting mechanism.

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