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Temperature-regulating load-regulating frequency-regulating impact test machine

A technology of impact testing machine and cyclic load, which is applied in the direction of applying repeated force/pulsation force to test the strength of materials, etc., which can solve the problems that the test temperature, impact frequency and impact energy cannot be adjusted at the same time, and achieve low manufacturing cost, convenient preparation, and excellent structure. unique effect

Inactive Publication Date: 2008-06-04
CENT SOUTH UNIV
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Problems solved by technology

[0006] The invention provides a temperature-adjusting, load-adjusting, and frequency-modulating impact test equipment, which solves the shortcomings of the existing impact test equipment that the test temperature, impact frequency, and impact energy cannot be adjusted at the same time, and realizes the actual testing of cemented carbide and ceramic materials. The simulation of working conditions is used to study, detect and evaluate the impact resistance of cemented carbide and ceramic materials, and make reasonable evaluation and prediction of the actual performance of the alloy

Method used

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Embodiment Construction

[0014] As shown in Figure 2, the speed regulating motor 4 is fixed on the workbench 1 by screws, and the speed regulating motor 4 and the transmission disc 11 are connected by a belt 10, which drives the transmission disc 11 and the cam 12 to rotate clockwise around the cam rotating shaft 13, and achieve deceleration. Crossbeam connecting rod 14 is fixed on the support 15, and one end links to each other with cam 12, and spring 17 is placed on the other end, and can rotate around crossbeam rotating shaft 16. When the cam 12 rotates, the spring 17 is compressed. When the cam 12 rotates to point A, the compression of the spring 17 reaches the maximum. When the cam 12 rotates beyond the point A, the spring is released, pushing the vertical connecting rod 5 and The impact head 7 moves downwards to perform an impact on the sample 8 placed in the open-close heating device 6, and cooling water 9 is passed into the vertical connecting rod 5 for protection. The workbench 1 continues t...

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Abstract

The invention discloses an impact tester and belongs to the test device of impact performance and life estimation of materials such as hard alloy, ceramics and so on. The invention comprises a circulating load power generator, a power control device, a mechanical transmission device, a sample clamp, a heating and temperature regulating device, a support base and so on. The invention fixes the test sample on an impact test clamp and places the test sample in a heating device together with the clamp; the power generated by the circulating load power generator is converted into the impact force and acts on the test sample through the mechanical transmission device; the temperature, the load and the frequency of the impact test are changed by adjusting the temperature regulating device and the power control device. The invention has the functions of temperature regulation, load regulation and frequency regulation, and can evaluate the anti-impact performance and the service life of the sample according to the generation and extension of the cracks and failure condition of the tested sample.

Description

technical field [0001] The invention relates to the field of impact performance testing of structural materials, more specifically, it is used for testing the impact properties of cemented carbide, ceramics and other materials. Background technique [0002] In the research, production, and application of cemented carbide and cermet materials, the performance of materials is currently evaluated by measuring the bending strength, impact toughness, and fracture toughness of these materials at room temperature. In actual use, such materials, such as cemented carbide tools, will be repeatedly affected by impact loads during milling and rock drilling (Japan's TG high-speed tungsten steel milling cutter has a speed of up to 40,000 rpm) ; At the same time, due to the impact and friction, the temperature of the material will rise sharply. For example, the temperature of the tip of the carbide tool reaches above 1000 °C when cutting. Under such harsh working conditions, oxidation and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/32
Inventor 易丹青李荐黄道远
Owner CENT SOUTH UNIV
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