Testing methods and precautions for impact testing machines

Impact testing machineCommonly used for impact test and inspection of materials, the person in charge of Jinan Hengsi Shanda Instrument Co., Ltd. has done the following detailed steps to understand and operate precautions for impact test based on the performance of the impact test machine:

When measuring the size of the specimen, you must measure the size of the specimen at the notch.

First of all, understand the structural principles and operating methods of the pendulum impact testing machine, master the operating procedures of the impact testing machine, and be sure to pay attention to safety.

Adjust the pointer of the impact tester to "zero point" and estimate the required damage energy according to the test piece material. First, empty it and measure the frictional power consumption between the parts. The test piece should be installed on the impact tester. The simple-supported beam impact tester should have the surface without a gap facing the side of the pendulum impact. The position of the gap should be between the two supports, so that the gap and the pendulum impact blade should be aligned. Lift the pendulum at the same position as the empty position and open the lock lever. Let the pendulum fall, punch the test piece, and then brake to read out the work consumed when the test piece is punched out. The following formula can calculate the impact toughness value of the material

- The work consumed when slamming the test piece

――The cross-sectional area of ​​the specimen notch

existImpact testing machinePay special attention to safety during the experiment. It is prohibited to lift the pendulum high and then place the test piece. When the pendulum is raised, the person leaves the range of the pendulum swing. Before putting down the pendulum, Jinan Ruima Machinery Equipment Co., Ltd. should first check whether anyone has not left yet to avoid danger.

In actual engineering machinery, many components are often affected by impact loads. In machine design, it is necessary to avoid shock wave loads. However, due to the characteristics of structure or operation, impact loads are difficult to completely avoid. For example, during the expansion stroke of the internal combustion engine, gas explosion pushes the piston and connecting rod, causing impact between the piston and connecting rods. When the train is driving or stopping, the hooks between vehicles also produce impact. In some tool machines, impact loads are used to achieve effects that are difficult to achieve, such as forging hammers, impact, rock drilling machines, etc. In order to understand the performance of materials under impact loads, we must conduct impact experiments. .

More AboutImpact testing machineAll relevant information is available on Jinan Hengsi Shanda Instrument Network