RPZ Full-automatic High-temp. Dilatometer

　　Horizontal differential thermal expansion instrument, manufactured with relative Chinese standard GB/T 7320 "Refractory materials-Determination of thermal expansion", differential push rod type test principle, which is suitable for determine heat expansion ratio and coefficient of solid material at R- 800/1300/1600/1700℃ and can Study on sintering process of materials.

　　Patent No.:ZL2011 2 0280763.8

　　Mainstream model equipment selection guidance:

　　Use temperature

　　Controlled atmosphere

　　Sample size

　　number of specimen

　　Intelligent controller / LCD touch screen /IPC computer

　　Brief Introduction

　　GB/T 7320 standardized products,according to E ASTM 831, D ASTM 696, D ASTM 3386, DIN51045, EN993-19:2004 and other standards.Mainly used to test the high-temperature expansion of solid inorganic material, metal and nonmetal materials.The application of investment casting shell and core, raw materials, ceramic glaze, porcelain clay, glass, graphite, carbon and other materials are more widely. Obtain material’s line variation (volume), line expansion coefficient and expansion rate, can choose to use professional software to test the softening temperature, sintering kinetics, glass transition temperature, material phase change, density change, rate controlled sintering (RCS).

　　Instrument characterization:

　　1. Test mode: horizontal differential push rod;

　　2. Top bar and sample tube use high purity corundum products with aluminum oxide content in 99.5%

　　3. Sintering atmosphere: air atmosphere, controlled atmosphere

　　4. High precision linear displacement sensor and imported linear bearing measuring mechanism, ejector rod tracking pressure adjustable mechanism, to make sure force constant in the test;

　　5. Self circulation cooling system

　　6. Two thermocouples (one measure sample temperature and the other control temperature)

　　7. Can test different shapes of samples.

　　8.The control software based on Windows system, automatic calibration, data storage, data analysis, dynamic drawing "Expansion value -temperature, expansion ratio- temperature, expansion coefficient- temperature, temperature-time” curves.Open database can be used to analyze the sintering process with third party software.

　　9. 9. Professional computer +ICM control module measurement and control, liquid crystal display, printer.

　　Patent:

　　ZL 2011 2 0280763.8 A high temperature thermal expansion instrument with a core part closed

　　standard:

　　GB/T 7320-2008Refractories - Determination of thermal expansion

　　Related literature:

　　Analysis of test method for thermal expansion of refractory materials  author: Zhang Yajing 《Refractory》2007，41（4）