Diamond fanar is an Iranian manufacturer of all kinds of mechanical springs. A spring is a critical mechanical component in industrial systems, responsible for energy storage and vibration absorption. Common materials for spring manufacturing include carbon steel with tensile strength between 1600 and 2000 MPa, chrome-vanadium alloy steel, and stainless steels 302 and 316. The Young’s modulus of steel springs is typically around 200 GPa, indicating high strength and resistance to deformation. Wire diameters can range from 0.2 millimeters to over 20 millimeters, and free lengths vary from a few centimeters to more than one meter depending on the application. Parameters such as coil pitch, inner diameter, outer diameter, and number of turns directly influence the spring stiffness, which is generally adjustable within 1 to 500 N/mm.
The spring manufacturing process begins with selecting the appropriate wire, typically carbon steel with diameters ranging from 0.2 to 20 millimeters and tensile strength of 1600 to 2000 MPa. The wire is first pre-stretched using a drawing machine to ensure uniform diameter and surface hardness. Then, CNC coiling machines or automatic winding equipment form the wire into the desired helical or custom shape. Modern machines can operate at speeds up to 2000 revolutions per minute, achieving dimensional accuracy of ±0.05 millimeters for inner and outer diameters.
After coiling, the springs undergo heat treatment, including annealing and tempering, to relieve internal stresses and stabilize mechanical properties. Surface treatments such as chromating, phosphating, or powder coating are applied to enhance corrosion resistance. Finally, springs are inspected using digital measurement equipment for free length, wire diameter, stiffness, and number of coils. Once quality standards are met, the springs are packaged and prepared for industrial applications.