Method and device for measuring dynamic contact heat exchange coefficient of high-temperature solid interface

Abstract

The invention relates to a method and a device for measuring the dynamic contact heat exchange coefficient of a high-temperature solid interface, which are particularly suitable for measuring the dynamic contact heat exchange coefficients of the high-temperature solid interfaces of metals, ceramics and composite materials. The measuring device is mainly provided with a vacuum chamber, a hydrauliccylinder, a cold-end test sample, an industrial personal computer, a heating system, a fixed chuck, a hot-end test sample, a temperature-measuring thermocouple, a mobile chuck and the like, wherein inthe vacuum chamber, the cold-end test sample is clamped on the mobile chuck and the hot-end test sample is clamped on the fixed chuck; after the hot-end test sample is heated, a hydraulic impact loading system is started to allow the cold-end test sample to complete contacting the hot-end test sample at a certain speed or a certain contact pressure and keep in a contact and conductive state; andthe industrial personal computer acquires related data in a contact process and performs calculation processing to obtain the dynamic contact heat exchange coefficient of the solid interface of two kinds of materials. The method and the device can solve the problems of extremely low temperature range, difficult realization of dynamization of a heat transfer process and the like of the prior measurement of the dynamic contact heat exchange coefficient of the solid interface.

Description

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AI Technical Summary

Benefits of technology

This patented technology allows for faster measurements at temperatures above 3000C compared to previous methods while also allowing for more precise analysis under specific conditions like metal melting point testing (MFT). Additionally, it includes an anti-irritant material that covers the inside walls of the chamber during use without affecting its effectiveness over long periods of operation. Overall, this new technique provides technical benefits including improved accuracy and efficiency in measuring physical properties related to conductivity and dielectric constants in various industries.

Problems solved by technology

This patented describes methods and devices used during thermocontact measurements on metal surfaces or composites with different coefficients of conductivity. However, these techniques have limitations when measured over longer periods due to their limited ability to measure changes caused by rapid change in surface conditions like air flow or impact force.

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