Design and reverse engineering: If you have a sample, its dimensions are extracted with calipers and a digital micrometer. If you have a new design, simulation software analyzes the behavior of the spring.
Twisting and forming: Automatic CNC machines with high speed and precision make the wire into the desired shape.
Heat Treatment: This is the most important step. The spring must be heated in special furnaces with a precise temperature to release the residual stresses and stabilize the molecular structure of the metal. Many different workshops omit this step, which causes a drop in quality. But in Novin Fener Khalili, this is an integral part of the process.
Grinding and shot blasting: For compression springs, the seating surface is ground to maintain verticality. Shot blasting operation is also done to increase the fatigue life of the spring.
Strength test and quality control: Before delivery of the order custom industrial spring purchase from Fanzerazi in Tehran, the springs are placed under the force testing machine to ensure that they work exactly according to the technical specifications.

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