Annealing furnace is one of the heat treatment equipment.It is the metal slowly heated to a certain temperature, heat preservation for a period of time, then cooling with appropriate speed (usually is a natural cooling, sometimes is fast cooling) of a kind of metal heat treatment process.Purpose is to make after casting, forging, rolling, welding or cutting material or artifacts to soften, improve the plasticity and toughness, the chemical composition of homogenization, remove residual stress, easy to rework or get the desired physical properties. Annealing furnace heat cycle inside the furnace, furnace temperature uniformity is good, no noise, no pollution, little heat, less heat loss, high precision temperature control, furnace temperature uniformity, high degree of automation, simple operation, can adopt PID programming setting, automatic performance, good sealing, long life, safe and reliable.Aging furnace can eliminate the internal stress of workpiece, a stable organization and size, greatly improve the mechanical properties of workpiece.