Considering lightweight, space saving, improved comfort, and improved stress distribution, the arc-shaped spring is more reasonable than other springs, and the manufacturing process is not too complicated. The arc-shaped spring mainly uses high-purity 45 steel, which is quenched at high frequency to obtain high hardness and large residual compression stress on the surface, thereby improving fatigue life and anti relaxation ability. Below, the editor will give you a detailed introduction to the processing technology of the arc-shaped spring.

Processing technology of curved spring:
1) The suspension spring with variable outer diameter, variable pitch, and variable wire diameter has achieved non moldable processing. Since the development of the curved spring, conical steel bars have been used for winding processing on CNC lathes, but the yield and price are not ideal. Now, the required conical shape is obtained by controlling the roll speed and pulling force through a spring winding machine under heating conditions, and quenched with processing waste heat.
2) The hollow stable spring rod is made of low-carbon boron steel plate rolled and welded into shape.
3) The torsion bar is made of high-purity 45 steel and undergoes high-frequency quenching to obtain high hardness and significant residual compressive stress on the surface, thereby improving fatigue life and anti relaxation ability.
Cold forming process of arc-shaped spring:
1) One time automation capability for cold forming process. The cold forming machine has now developed to 12 claws, and steel wires within the range of (0.3-14) mm can be formed in one go by an 8-claw forming machine.
The current development direction of forming process equipment:
① The main trend in improving forming speed is to increase the forming speed of equipment, that is, production efficiency;
② By improving the precision of equipment components and enhancing the effectiveness of heat treatment, the durability of equipment can be improved;
③ Add length sensors and laser rangefinders to enhance the cold forming process capability of CNC forming machines.
Hot forming process of arc-shaped spring
1) Hot forming process speed capability. At present, China only has CNC2 axis hot coil spring machines with a speed of 17 pieces per minute for forming on (9-25) mm specifications. Compared to developed countries, there is a significant gap.
2) Control capability of hot forming process for Weishan arc-shaped spring. Due to the limited availability of CNC2 axis hot spring machine, the shape control has three less directional effects, resulting in poor accuracy; Moreover, there is no automatic rod material rotation control and adjustment mechanism, so the level and capability of hot coil spring forming process are relatively low, resulting in lower accuracy and surface oxidation decarburization level of the spring.
That's all for the introduction of the processing technology of curved springs. We sincerely hope to help you make a small contribution when making curved springs. We also welcome inquiries, guidance, and negotiations by phone or letter. You can also pay more attention to our website, and we will prepare updated information for you to refer to.