Electro-mechanical testing machine: 330 kN to 2500 kN
In many applications, compliance with characteristic values or specification limits for safety in long-term use is required. The relevant and required characteristic values are determined depending on how the heavy plate is used. The test methods used for this segment are methods often used in heavy plate testing. In special applications or uses, other test methods not mentioned here can be used to ensure safe and long-term use and operation.
Heavy plates are steel sheets with a width of up to four meters and a thickness of at least three millimeters up to approx. 250 mm and a length of up to twenty meters. They are manufactured by the reverse thermomechanical rolling of slabs.
Wide range of testing solutions
Standard-compliant strain measurement.
Strain measurement up to break
Testing and determining the average global hardness value
Determining the grain structure of metallographic constituents with hardness tests
The drop weight test as described by W. S. Pellini is used to investigate the brittle fracture tendency of steels for comparative evaluation of crack arrest behavior to the American standard ASTM E208 and steel and iron test sheet SEP 1325. During the test, weights fall onto a rectangular flexure specimen supported at both ends, causing a brittle fracture on the tensile side of the specimen within a prescribed total deflection. This brittle fracture is initiated by a notched welding bead laid on this side and known as the crack starter. It is then determined whether the brittle fracture caused by the artificial crack-starter spreads as far as one of the two side faces of the specimen or is arrested beforehand. Crack formation or break are evaluated optically and manually. If the fracture extends to one of the two side faces, the specimen is considered broken. Tests also depend on the specimen temperature.
Pellini drop weight testers are available with energies of 550J and 1650J. The maximum drop height is 1.0 m or 1.3 m. The drop weight is raised automatically with stepless drop height adjustment. In accordance with standards (ASTM E208 and SEP 1325), the prescribed drop energies are achieved by the simple use of weights. Drop energy is calculated automatically. The test area is electrically and mechanically protected via a safety circuit. The test is not performed until all safety contacts have been tripped and executed. Operation is via a touch screen, on which drop height, drop energy, drop weight, and impact velocity are shown.
Two-stage test for KIc determination
Compact specimen (CT specimen)