The Izod impact testing machine is a semi-automatic control testing machine with simple operation and high work efficiency. The swing, impact and placement are electrically controlled, and the remaining energy after breaking the sample can be used to automatically swing the pendulum to prepare for the next test. It is especially suitable It is used in laboratories that continuously do impact tests and metallurgy, machinery manufacturing and other industries that do a large number of impact tests. The cantilever pendulum impact tester is a common, mechanical testing equipment. If there are some minor problems in use, you can check and repair by yourself to ensure the accuracy and good operation of the impact testing machine.
The maintenance and inspection methods for common problems is below:
- The pendulum should be removed during the moving process to avoid shaking and damaging the relevant parts
- Don’t put the unused pendulum together with nearby, so as to avoid deformation of the pendulum rod under pressure and bending.
- The parts of the pendulum shall not be disassembled or replaced at will, so as to avoid changes in the pendulum torque and the position of the striking center.
- If it is found that the operating mechanism is not working, the pendulum cannot be hung or the latch cannot be disengaged, the relevant parts can be removed and cleaned with kerosene, coated with a little lubricating oil, and reinstalled in the original position.
- If there is no abnormal reason, the pointer should point to the zero position of the dial after the air strike, and the computer display is 0.01J. If the pointer deviates from the zero position after the air strike and exceeds 0.1% of the maximum impact energy of the corresponding pendulum, the calculation display is not 0. The following points can be checked, whether the cantilever beam pendulum impact testing machine is level, whether the position of the active needle is adjusted and tightened correctly, whether the pendulum rod is bent or deformed, whether the friction of the testing machine is increased, the nut should be connected to the The flange cover is securely fastened to avoid axial movement of the ball bearing and pendulum shaft. Whether there are signs of wear on the work surface of the pendulum latch and pendulum hook. The distance between the magnetic roller and the armature of the tooth-inlaid electromagnetic clutch is inappropriate. If the three steel balls on the iron-embedded end face contact the magnetic roller end face in the case of power failure, the friction will increase. The distance between the two is 12~2mm As an official, it has been adjusted before leaving the factory.
- The pendulum failure may be caused by the motor belt being too loose and the electromagnetic clutch malfunctioning. At this time, it is necessary to adjust the belt tightness, repair the electromagnetic clutch, and eliminate the malfunction.
The Izod impact tester generates signals through high-speed load measurement sensors, amplified by high-speed amplifiers, and quickly converted into digital signals by A/D and sent to the computer for data processing. At the same time, the angular displacement signals are detected and sent to the computer for data processing. High accuracy . The installation of high-speed angular displacement monitoring system and force detection sensor and amplifier, through computer high-speed sampling, data processing, can display NT and IT curves, data storage, data report printing, etc., can measure and record the material in the process of being impacted in warm hours For the characteristic curve, by replacing the pendulum and the sample base, two types of tests of simply supported beam and county iron can be realized.
