What is the Voltage Relief?
Voltage Relief Treatment is a method used to eliminate accumulated stresses within metals during thermal or mechanical processes. These stresses can cause the material to deviate from tolerances in subsequent operations and may even lead to defects during the product’s use. Therefore, alleviating internal stresses is a critical step. Voltage relief annealing is a heat treatment technique employed to address internal stresses without altering the material’s fundamental properties.
The voltage relief process reduces internal stresses within the material through micro-level plastic deformation. To achieve this, the material is heated to a specific temperature and held for a certain period. During this process, the yield point and maximum tensile strength of the material decrease, which in turn reduces internal stresses. Voltage relief treatment typically takes several hours and occurs within the temperature range of 500 to 650 °C. The heating and cooling processes are slow and controlled to prevent the formation of cracks or new stresses. Additionally, negative effects such as decarburization or the formation of bainite are minimized at these temperatures.
Voltage relief treatment is used in cases involving large and complex parts, products assembled through welding, and components subjected to multiple operations. It is also preferred for products where dimensional tolerance is critical.
As Termosan Heat Treatment Industry and Trade Inc., we effectively eliminate internal stresses from your parts using specially designed processes. This allows you to obtain stronger, more durable, and reliable metal parts.