Zwick has introduced specimen grips for high-strength technical yarns and steel wires.
Specimen grips have a significant impact on the quality of materials testing and must be compatible with both the specimen under test, the load cell and load frame of the testing system.
Zwick's range of specimen grips is continually being expanded in order to maximise performance and quality.
The latest offerings are specimen grips for testing yarns, threads, cord, twines and ropes made of high-strength synthetic fibres and for steel wires, steel wire ropes, steel cords and steel strands.
Many grips require the use of special technologies.
Progressive gripping force application, special jaw surfaces and production technologies, together with load reducing curves up to 270deg, are all employed to grip specimens securely and avoid jaw breaks during testing.
The symmetrical design of these grips places the centre of gravity near the tensile axis and ensures that no transverse forces are transmitted to the load cell.
Other features include high-hardness polished jaw surfaces, pneumatic end clamping, plus a groove to ensure exact specimen positioning on the centre line of the test axis.
An advanced insertion device allows quick and fatigue-free gripping of material specimens.
