| The intellectual thermal expansion detection system has been developed by utilizing intelligent detection technology and designing of software and hardware. This system consists of five parts: heating furnace with circulation cooling device, detection system, temperature control system, microcomputer and printer. C++ Builder and Visual Basic has been used to design online application software, which offers a friendly operation interface. The detection system has functions of data detection, data acquisition, data processing and data storage. The temperature control system can control the heating furnace according to given temperature curves. Different cooling rates can obtain by applying water circulation cooling system and gas cooling system. The system has been used to detect the coefficient of thermal expansion, critical point temperature of phase transformation, and different cooling curves of PCrNi1MoA. CCT curves of PCrlNiMoA were drawn according to the results, and reproductive experiment was also carried out. The system has the properties of high accuracy, low investment, good stability and reproducibility, friendly operation interface and good extensibility. |
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