Manufacturing process of spring
Spring manufacturing process are varied, but the major shaping Size: There are two main arts, cold forming and hot forming.
Cold-forming process in the spring, the spring production of mainly oil quenching and tempering material, lead bath patenting heat treatment of the spring wire, cold drawn wire and other strengthening, using processes such material in the spring generally does not require special heat treatment only to stress the need for annealing, design work associated with the stress of the spring material properties used. Spring cold forming process is generally suitable for a smaller diameter, or more complex shape profiled spring, such as diameter less than 15mm, a variety of cards, pull, torsion springs, convex, concave, curved spring. Cold forming process is characterized by: plant process flow is simple, to avoid re-heat treatment distortion, decarburization occurs.
In the spring thermoforming process, the spring production mainly hot-rolled material annealed material, cold drawn annealed material, the use of such materials need to be heated spring quenching and heat treatment, spring is designed to work with the selected material stress and heat treatment process-related. Spring thermoforming process generally suitable for larger diameter, or shape a more simple spring, such as a variety of diameter greater than the cylindrical or conical spring 6mm. Thermoforming process is characterized by greater added value products, we can produce large diameter spring.