Maintenance and experimental precautions for plastic impact testing machines

The plastic impact testing machine includes cantilever beams and simply supported beams, which are mainly used for the determination of impact toughness of hard plastics (including plates, pipes, plastic profiles), enhanced nylon, fiberglass, ceramics, cast stones, electrically insulating materials and other non-metallic materials. What I want to share with you this time is the maintenance and experimental precautions of plastic impact testing machines. Let’s learn about it together.

1. Maintenance of plastic impact testing machine

1. During the handling of the test machine, the impact swing should be removed to avoid the impact swing back and forth and causing the relevant parts to be damaged. When the impact swing is not in use, anti-rust oil should be applied and placed in the attachment box. It is strictly forbidden to disassemble or replace the relevant parts on the impact swing to avoid the impact constant and impact center distance of the impact swing.

2. Before use, check whether the connecting screws such as the plastic impact tester are loose, whether the power supply is turned on, and whether the impact pendulum positioning mechanism and the placement switch work normally. In order to ensure that the friction of the bearing is small, high-speed mechanical oil should be added to the shaft hole regularly, but the refueling should not be too much, otherwise the friction will be increased.

2. Precautions for experiments on plastic impact testing machines

1. When the new plastic impact tester is used for the first time, the level of the base must be adjusted first. When the swing bearing of the plastic impact tester is not cleaned regularly, the energy loss will be excessive. It should be cleaned and refueled before use.

2. When the impact sample wears regularly and causes the blade jaw to deform, its wear parts should be replaced. In the experiment, the piercing rod is prone to bending and deformation, which affects the test accuracy. Therefore, when determining the energy of the material, a plastic impact tester with the corresponding energy level should be used to avoid piercing as much as possible. For the first time, try to use a large number of range impact pendulums without knowing the impact intensity.

3. When placing, pay attention to the direction of the pendulum movement to ensure personal safety. The pendulum cannot touch any part of the human body. After the plastic impact test machine is tested, the data will be recorded in a timely manner to truly and objectively reflect the test situation.

When using the test machine, the operator must use it in accordance with the procedures and specifications of the instructions. Otherwise, it is easy to cause dangerous situations such as machine failure and personnel injury. The above are the maintenance and experimental precautions of plastic impact testing machines, and I hope they can help you.