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Refractoriness under load (RUL) and creep in compression (CIC) testing machine

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Product details

Refractoriness under load (RUL) is a measure of the deformation behavior of refractory ceramic products subjected to a constant load and increasing temperature.
The temperature range in which the softening occurs is not identical with the melting range of the pure raw material; however it must be reliably determined with the machine to check the use of refractory products in high-temperature applications.
Creep in compression (CIC) refers to the percent of shrinkage of a refractory test piece under a constant load and exposed to a constant high temperature over a long period of time. The creep in compression test is also carried out in the machine to a maximum temperature of 1700°C.
With its sturdy design, the machine is well suited for these long-running thermal and mechanical loads.
The same test-piece dimensions of 50 mm in diameter(or 36 mm in diameter) and 50 mm in height are used for both the RUL and the CIC tests. For the high-precision differential measuring system for determination of the deformation, the cylindrical test piece has a co-axial bore of 12-13 mm.
Selection and application of the load on the test piece are reproducible and independent of the deformation through use of the hood-type furnace with counterweights.
By reducing the load on the test piece to negligible values (as compared to the surface of the test piece), precise dilatometer measurements on large and even inhomogeneous samples can be carried out in the machine at temperatures up to 1700°C.


Main Characteristics

This machine use frame rigid structure, high accuracy double thread screw transmission, stepless speed control, automatically lifting furnace body, put sample at bottom, easy to operate.
Using Independent research and development software control on Windows system, the software is easy to operate with stable working condition. The machine have automatic heating, warm keeping, data processing, report printing, no paper records, data management and other functions.


Technical parameters

Power supplier

AC 380V/3-phase


15kW(2HP) 380V

Temperature control accuracy ±1℃
Heating element Silicon molybdenum rod
Displacement range 0~10000μm
Displacement resolution 1μm
Sample maximum load 0.2MPa
Furnace chamber thermocouple type B
Sample thermocouple type B
RUL temperature 1700℃
CIC temperature 1500℃
Sample Size

Diameter: 50mm±0.5mm or 36mm±0.5mm
Height: 50mm±0.5mm
Co-axial bore diameter: 12~13mm



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