1.Applications ans features-torsion testing machine The machine is used to test the anti-impact properties under dynamic load for metal materials. It can be used for metallurgical mechanical manufacturing industry and scientific research departments. This machine adopts PC computer control, electrically raising pendulum and impact, computer measurement, calculation, screen display results and can print results, with high efficiency and accuracy. After impact to specimen, it can automatically raise pendulum with the left energy and make preparations for the next test, easy to operate, efficiently. It is especially applicable to the metallugical and mechanical industries which usually need to make plenty of impact tests. The PC can display impact absorption energy, impact toughness, pendulum rising angle and average value and can print test data and average value, satisfying Metallic Materials-Charpy Impact Test Method. 2.Main specifications-torsion testing machine 1 Impact engergy 150J 300J 5 Pendulum pre-raising angle 150° 6 Distance between pendulum center to impact point(sample center) 750mm 7 Impact speed 5.2m/s 8 Span of impact specimen support 40mm 9 round corner of nipper jaw R(1.0-1.5)mm 10 round corner of impacting edge R(2.0-2.5)mm 12 impact knife thickness 16mm 15 Specimen size 10X10X55mm 16 Dimension 1500X850X1340mm 17 Weight 850kg 18 Power and voltage three-phase four-wire system 380V 50Hz