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Brittleness TR Test + cryostat, instrumented (PC)
BRITTLENESS
Determination of the temperature at which 50% of the specimens exhibits brittle failure or coating cracks, according to the reference standards, under specialed impact conditions. The impact is performed by a hammer constrained at one end which impacts the specimens during its free falling. The hammer design guarantees the required impact speed, avoiding mistakes which could be due to either electromechanical or solenoid controls. Repeatability and constancy of the test performance are also guaranteed by the impact hammer automatic release the moment the specimen support is extracted from the conditioning bath. The impact hammer non-return system and three di•erent safety blocks guarantee one only impact each test, and a complete safety for the operator when positioning the specimen support.
The impact pendular hammer is a constant pro•le knife assembled on a bar complete with counterweights and truing on special bearings.
The pendular hammer release is a spring-operated system, which makes easier the manual positioning of the hammer after the impact.
The overturning front glass allows the visual control of the test and protects the operator during the hammer fall.
Frontal reclining crystal for display test and operator protection during the fall of hummer.
Specimen support device is composed of a clamp supporting arm with a mechanical remote control to insert and extract it from the hummer just before the impact.
Stainless worktop
5-seat clamp in accordance with ASTM standard
Dimensions 1300 x 810 x 1100 h mm
Weight: 235 k
Power supply: 230VAC, 50Hz 20A
TR TESTER
Chassis for manual insertion into the test tank, stainless material, with 3 graduated scales for setting of elongation and the observation of the percentage of retraction.
6 testing stations complete each of a pair of special terminals, movable clamp for mounting of the specimen and the •xed clamp for specimens 38 mm mounted on the lower support of the frame
7 ÷ 21 kPa counterweight connected to a rod with a sliding index.
The index moves thanks to a wire sliding on a small pulley.
Movable clamp to position the specimen
Stationary clamp on the rack lower support for 38 mm specimens
Each rack test station can locate a standard specimen between two clamps – length 13, 25, 38 or 51 mm, to reach 350% maximum elongation of 38 mm long specimens.
Stainless steel test bath having approx. 15 l volume
To insert and condition specimens for both Brittleness and TR tests alternately.
Dimensions 1300 x 810 x 1530 h mm
Weight: 245 kg
Power supply: 230VAC, 50Hz 20A
