Device and method for diffusion welding expansion measurement based on quenching dilatometer

Abstract

The invention discloses a device and method for diffusion welding expansion measurement based on a quenching dilatometer. According to the treatment method, a corundum or quartz support ejector rod for longitudinal strain measurement of the quenching dilatometer is modified to achieve the purpose that force can be applied to the two ends of a metal sample for diffusion welding. A high-temperature-resistant and pressure-resistant sleeve part is additionally arranged at the end, making contact with a sample, of the corundum or quartz support ejector rod, the end of the high-temperature-resistantand pressure-resistant sleeve part makes close contact with the two ends of the test sample under the acting force of a quenching dilatometer support, the sleeve part is connected with a force-sensitive measuring system and a mechanical control system, and the magnitude of applied force is controlled by the mechanical control system. The force-sensitive testing system measures the magnitude of applied force and feeds back and regulates the mechanical control system at the same time; the defects that an existing corundum or quartz support ejector rod for longitudinal strain measurement of thequenching thermal expansion instrument is difficult to bear force, the space of a high-temperature area is narrow, and complex components cannot be additionally arranged are overcome, the applicationfunction of the quenching thermal expansion instrument is expanded, and the transformation method is simple, convenient and easy to implement.

Description

technical field [0001] The invention relates to the technical field of thermal expansion detection of metal materials, in particular to a device and method for measuring diffusion welding expansion based on a quenching dilatometer. Background technique [0002] In recent years, with the development and deepening of science and technology in various industries, new materials have been continuously discovered and synthesized. In production and application, problems are often encountered between new materials and new materials themselves or between new materials and other materials. Many functional materials such as metals, alloys, and ceramics are difficult to achieve reliable connections by traditional welding methods. Especially in the manufacture of some special high-performance components, it is often necessary to join dissimilar materials with large performance differences, such as metal and metal, metal and ceramics, metal and glass, etc., which is difficult to achieve g...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a device and method for measuring diffusion welding expansion based on a quenching dilatometer; The lack of real-time measurement of diffusion welding expansion measurement, the real-time expansion curve can be obtained while simulating the diffusion welding sample, under the application of liquid nitrogen, the organizational structure of different process periods of diffusion welding can be preserved as much as possible by rapid cooling. The application function of the quenching dilatometer is expanded, and the modification method is simple and easy

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