Refractory Testing (RUL/CIC, HMOR)

RUL/CIC 421-Apparatus for determining refractoriness under load

 

Determination of refractoriness under load (RUL) and creep in compression (CIC) of refractory ceramics

 

Refractoriness under load (RUL, according to ISO 1893) 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 RUL 421 to check the use of refractory products in high-temperature applications.

 

Creep in compression (CIC, according to ISO 3187) 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 RUL 421 to a maximum temperature of 1700°C. With its sturdy design, the RUL 421 is well suited for these long-running thermal and mechanical loads.

 

Technical Specification:

 

Temperature range: RT to 1700°C

 

Heating elements: 4 Kanthal-Super 1800

 

Heating- and cooling rates: 0,01 K/min to 5 K/min

 

Sample holder: Al2O3

 

Load: 1 N to 1000 N (in steps from 1 N to 100 N)

 

Vacuumtight ver: Up to 10-2 mbar (special construction RUL/CIC 421

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