High-temperature friction-wear tester

Abstract

The invention relates to material surface performance test equipment, and particularly relates to a high-temperature friction-wear tester. The tester comprises a machine base, a force measuring machine head, an adjusting bracket, a heating furnace assembly and a cooling circulation system, wherein one end of the force measuring machine head is connected to the machine base through an adjusting support, the cooling circulation system is arranged between the other end of the force measuring machine head and the machine base, the heating furnace assembly is arranged in the cooling circulation system, the force measuring machine head is connected with a loading rod, the loading rod runs through the force measuring machine head, the heating furnace assembly comprises a furnace body, a heating cavity is formed in the furnace body, the loading rod is inserted into the heating cavity, a friction disc is arranged in the heating cavity, a detection piece is clamped between the loading rod and the friction disc, the lower end of the friction disc is connected with a rotating shaft, the rotating shaft penetrates through the heating furnace assembly and the cooling circulation system, and the lower end of the rotating shaft is rotationally connected into the machine base.

Description

technical field [0001] The invention relates to material surface performance test equipment, in particular to a high-temperature friction and wear tester. Background technique [0002] The high-temperature friction and wear tester is an instrument and equipment for material surface performance testing, which is widely used in the field of material science and technology. Our patent 201310311447.6 discloses a high-temperature friction and wear tester. The tester discloses: including a frame, a machine The frame is provided with a rotating shaft, and the frame is also provided with a driving device. The top of the rotating shaft has a tray, the surface of the tray is coated with a heat insulating layer, and the surface of the tray is also fixed with a friction disc; the frame is provided with a bracket, and the bracket is provided with a There is a beam with a force sensor on it, a loading rod at one end of the beam, and a sample chuck at the bottom of the loading rod. This te...

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Problems solved by technology

[0003] First, it can be known from the structure and connection method of the beam and the bracket that the distance between the test piece and the beam is fixed, but the test piece used for each test must not be of uniform thickness, and the contact with the test piece is limited. It can be adjusted by the loading rod. If the loading rod is adjusted downward too much, it will inevitably cause a certain pressure on the loading rod relative to the test piece. When the pressure of the weight is increased during the test, the actual test pressure is greater than the pressure of the weight. Therefore, the test data must be inaccurate. If the loading rod is not adjusted properly and is not in contact with the test piece, the actual test pressure is less than the pressure of the weight, which will also lead to inaccurate test data;

[0004] Second, since the relative position of the loading rod and the test piece is also fixed, if multiple tests are required for comparison on the same test piece, the test piece needs to be re-clamped, but this process will lead to The position of the part changes, and it cannot be guaranteed that the test part after re-clamping is consistent with the previous state, so the test data obtained in this way are not comparable;

[0005] The third is to heat the test piece by setting the test piece in the heating chamber in the heating furnace, but its design structure is unreasonable, and there are situations of unstable heat dissipation, low work efficiency, and uneven heating of the test piece

[0006] The fourth is the rigid contact between the loading rod and the detection part, and the relative position between the two is fixed. As we all know, the surface of any object is not an absolute plane. The situation of contact with the test piece will change. When the loading rod passes through the high point, the loading force and friction will increase, and when the loading rod passes through the low point, the loading force and friction will decrease, resulting in fluctuations in the experimental data, and then cannot Obtain accurate and real experimental data

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