Everyone is familiar with springs. We usually use rectangular compression springs. This kind of spring is often used on ballpoint pens. Other types of springs may not be too common for everyone. Springs will be used in many products, such as presses and some bouncers, because the spring has a relatively good rebound ability and just meets the needs of these products. As mentioned above, there are many types of springs. What I want to introduce here is scroll springs. With the development of scroll springs in recent years, there have been many advancements in processing technology. Let me learn about them together.

Scroll spring processing technology

1. Scroll spring outer diameter, variable pitch and variable wire diameter suspension scroll spring have realized moldless plastic processing. Since the development of precision scroll springs, tapered steel bars have been used for winding processing on CNC lathes, but the finished product and the price are not ideal. Nowadays, under the heating state, the roll speed and drawing force are controlled by the spring coiling machine to obtain the required cone shape, and the processing waste heat is used for quenching to compress the spiral spring.

2. The scroll spring rod is made of low-carbon boron steel plate, rolled and welded to form.

3. The scroll spring is made of high-purity 45 steel, which has high surface hardness and large residual compressive stress after high-frequency quenching, thereby improving fatigue life and anti-relaxation ability.

4. Scroll springs widely used in electronic products are basically formed by stamping and automatic bending processing. At present, the main focus is on the development of composite material joining technology.

5. Scroll springs mainly develop multi-stage shot peening and liquid nitriding processes to improve the residual pressure stress on the surface and increase the fatigue life.