Hardening

Hardening

1 oil quenching line

Hardening

Thickness: from 0.2 to 3 mm

Width: from 6.5 to 315 mm

Hardening is a metallurgical operation that is part of the heat treatments. It consists of heating a material to a temperature known as phase change temperature or solution temperature of chemical compounds, depending on the purpose of the quenching, for the time required to transform the entire heated mass and then cooling the entire mass at a rate sufficient to trap chemical elements that may have diffused into the crystalline solid at high temperature during the reverse transformation. The chemical elements trapped in the low temperature phase then create tensions in the crystalline meshes which contribute to the increase of certain mechanical characteristics of the hardened part.

The plastic deformation mechanism (with deformation when returning to the resting state) of a metal corresponds to the displacement of crystalline irregularities (lacunar defects called “dislocations”). The stresses introduced into the metal through hardening make it difficult to move these dislocations (by increasing the level of energy required to move them from one mesh to another) and thus bring the elastic strength of the metal closer to its breaking strength.

Our hardening line allows us to offer you specific hardness levels adapted to your needs.