Impact Energy
The impact energy measures the energy absorbed by a notched metal bar when it breaks under a sudden impact. It indicates how much force the material can withstand.
Physicochemical mechanism of action
The impact energy is a measure of the mechanical resistance of a material. It is determined by the energy absorbed by a notched metal bar when it is broken by a sudden impact. This process shows the behavior of the material under high stress and gives an indicator of its toughness.
Metallurgical relevance & risks in welding
A high impact energy means the material is strong and tough. This is especially important in welding, as it increases the hardness and strength of the weld. A too low value can lead to softer metal, which can cause cracks and wear issues in service.
Workshop practice & instructions
To measure impact energy, a special device is used that breaks a notched bar with a sudden impact and measures the required energy. In welding, it is important that the metal has sufficient impact energy to ensure hardness and toughness. This can be achieved by selecting the right special steel or by using special welding procedures.