The drop-weight impact testing machine is a device for impact testing on products and materials. Different testing machine types have different applicable measurement ranges. But the principle of the test is the same. The true impact rate of the batch of products can be measured from the specified position of the specified height of the impact test sample with a drop hammer of specified quality and size (when the entire batch of products is tested, the total number of impact damage divided by the total number of impacts is the true impact rate TIR, expressed as a percentage). So, what kind of impact test does the falling weight impact testing machine belong to?

A test method for the safety, reliability and effectiveness of the product when subjected to an external impact or action. In addition, the metal material to be tested is made into a sample of a certain shape and size according to the regulations, and placed on a special impact testing machine with a certain impact load to break the sample. The test method to determine the impact toughness of the material is also It is called impact test.

Generally speaking, there are three types of impact tests:

1. The impulse test method is specified, and sine wave is used for the test;

2. Impact spectrum test method;

3. Specify the test method of the testing machine.

According to temperature, the impact test is divided into:

The impact test at room temperature is carried out at room temperature, generally within the range of 23±5°C.

Low-temperature impact test: Store it in a low-temperature medium for a certain period of time, and quickly remove it to complete the impact test after the temperature reaches the required temperature.

1. The use medium can be a mixture of ice and water (0 degrees Celsius);

2. Low temperature tanks can be used for other temperatures. According to different temperatures, alcohol or liquid nitrogen can be used for sample insulation.

According to the impact test method, the drop-weight impact tester is a commonly used machine in the test method of the overhead tester. There are strict requirements on employees' professional ethics and technology during operation. This testing machine has an impact energy of 300 joules, and there is a certain risk of misoperation. When the hammer is lifted, it is not allowed to perform any work under the hammer.