Between 1- 10 hour. The annealing time of silver-lithium alloy needs to be between 1 ~ 10 hour, and the temperature is generally between 400 ~ 600℃. In the annealing process, the temperature and time should be strictly controlled to avoid excessive sintering, oxidation, deformation and other problems, thus affecting the properties of materials. At the same time, in order to ensure the stability and consistency of annealing effect, it is necessary to carefully adjust and maintain the annealing equipment to ensure the uniformity, stability and reliability of the temperature.