Introduction: Impact test machine pendulum mainly by the pendulum and the hammer head, hammer equipped with impact knife, the pendulum requirements are as follows: 1. Impact energy Upon request, the pendulum should have sufficient impact energy. According to the method standard, the standard striking energy of the impact tester is 300J (± 10J) and 150J (± 10J). Commonly used testing machine, by changing the pendulum to change the striking energy. Each pendulum is generally used at a maximum of 10% -80% of the striking energy. When the upper limit is exceeded, the stiffness of the testing machine is insufficient, and if it is lower than the lower limit, the error will be large and the test result will be affected. 2 impact speed According to the method standard, the impact speed of the pendulum against the moment of impact should be in the range of (5.0 to 5.5) m / s. In general, the pendulum impact velocity within the above range has little effect on the sample results, above this range will have varying degrees of impact. When the impact speed is too high will make the material become more brittle tend to lead to ductile-brittle transition temperature rise, especially in the low-strength steel is more sensitive. 3 friction absorbed energy Impact energy loss caused by friction during the impact testing machine comes from the air resistance, the friction of the pendulum shaft bearing and the friction of the pointer. In the standard method is defined as passive pointer hysteresis, the value does not exceed one-fourth of the minimum scale graduation. The machine test a variety of hard materials of the test piece, subject to a certain angle, a certain weight of the blow, the energy can be absorbed to determine the toughness of the material. Meet the standards: ISO-180, JIS-K7110, ASTM-D256 Technical Parameters: Capacity: 30,50,150 kg-cm choice Impact speed: 3.4m / Set (11t / sec) Test angle: 150 ° Volume: 600 x 400 x 650mm Weight: 50KG Capacity: 2.75J, 5.5J, 11J
Introduction: Impact test machine pendulum mainly by the pendulum and the hammer head, hammer equipped with impact knife, the pendulum requirements are as follows: 1. Impact energy Upon request, the pendulum should have sufficient impact energy. According to the method standard, the standard striking energy of the impact tester is 300J (± 10J) and 150J (± 10J). Commonly used testing machine, by changing the pendulum to change the striking energy. Each pendulum is generally used at a maximum of 10% -80% of the striking energy. When the upper limit is exceeded, the stiffness of the testing machine is insufficient, and if it is lower than the lower limit, the error will be large and the test result will be affected. 2 impact speed According to the method standard, the impact speed of the pendulum against the moment of impact should be in the range of (5.0 to 5.5) m / s. In general, the pendulum impact velocity within the above range has little effect on the sample results, above this range will have varying degrees of impact. When the impact speed is too high will make the material become more brittle tend to lead to ductile-brittle transition temperature rise, especially in the low-strength steel is more sensitive. 3 friction absorbed energy Impact energy loss caused by friction during the impact testing machine comes from the air resistance, the friction of the pendulum shaft bearing and the friction of the pointer. In the standard method is defined as passive pointer hysteresis, the value does not exceed one-fourth of the minimum scale graduation. The machine test a variety of hard materials of the test piece, subject to a certain angle, a certain weight of the blow, the energy can be absorbed to determine the toughness of the material. Meet the standards: ISO-180, JIS-K7110, ASTM-D256
