FUCHUN SPRING
NEWS CENTER
08
2022
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07
Manufacture of springs
The manufacturing process of the coil spring includes: rolling, making of hooks or finishing of face rings, heat treatment and process performance test.
For mass production, it is rolled on a universal automatic spring coiling machine; for single-piece and small batch production, it is made on an ordinary lathe or by hand. When the diameter of the spring wire is less than or equal to 8mm, the cold rolling method is commonly used, heat treatment is required before rolling, and low temperature tempering is required after rolling. When the diameter is greater than 8mm, the method of hot coiling (hot coil temperature 800℃～1000℃) is adopted. After hot coiling, it is quenched and tempered at medium temperature. After the spring is formed, the surface quality inspection shall be carried out. and other defects; springs subject to variable loads must also undergo surface treatment such as shot peening to improve spring fatigue life.
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