Catalogue NETZSCH Thermal Analysis product catalogue
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Testing of Refractories, Refractoriness Under Load (RUL) Hot Modulus of Rupture (HMOR)
Thermal Conductivity Testing (TCT)
RUL 421
Refractoriness under load (RUL) is a • Temperature range: measure of the resistance of a refractory ambient ... 1700°C
product to deform when it is subjected • Heating elements: 4 to the combined effects of load, rising Super-Kanthal 1800
temperature, and time. The range in • Sample size: which the softening occurs is not identi- 50 mm diameter, 50 mm height
cal to the melting range of pure raw • Load range: 1 ... 1000N materials because it is influenced by the in steps of 1 and 100N
refractory composition and by the • Test atmosphere: static air, degree of distribution of low melting optional inert gas purge
point fluxing agents. • Optional vacuum-tight version
RUL421 G
HMOR 422
Measuring the modulus of rupture of • Temperature range:
refractories at elevated temperatures has ambient ... 1500°C
become a widely-accepted method of • Heating elements: SiC
evaluating materials at operating temper- • Industrial furnace: chamber furnace with
atures. Many companies base their spec- preheating zone
ifications on this type of test. It is a very • Thermocouples: type S
important parameter for quality control • Sample size:
which, together with other thermophysi- 150 mm x 25 mm x 25 mm
cal properties, gives information about • Mode of operation: continuous
the behavior of refractory materials used • Bending mode: three-point
for furnace linings. • Load range: 0 ... 5000N
• Load rate: 2 ... 12.5 N/s
TCT 426
The TCT 426 is a thermal conductivity • Temperature range:
tester which operates according to the ambient ... 1400°C
well-known hot-wire technique. This • Cross- and parallel-wire
transient method allows the determina- arrangement
tion of the thermal conductivity of ceram- • T(R)-technique
ics, bricks, and other refractory mate- • Large sample sizes: up to
rials up to high temperatures. The hot- 250 mm x 125 mm x 75 mm
wire technique is an absolute method; • DIN-, ISO- and ASTM-standardized
no standard samples are required.
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