A spring is a mechanical part that uses elasticity to work. Parts made of elastic materials are deformed by external force and return to their original shape after the external force is removed. Also known as "spring". It is generally made of spring steel. The types of springs are complex and diverse, and they are divided according to their shapes, mainly including coil springs, scroll springs, leaf springs, special-shaped springs, etc.
The spring is just an accumulator, it has the function of storing energy, but it cannot release the energy slowly, to achieve the function of slowly releasing this function should be achieved by "spring + large transmission ratio mechanism", which is commonly found in mechanical watches.
Springs made according to this principle for use in clocks and watches were also invented by Hooke himself. And the spring that conforms to the "Hooke's law" is the spring in the true sense. Disc springs were invented by the Frenchman Belleville, and are washer-type springs with a truncated conical section made of sheet metal or forged blanks.
The spring is made of steel, and the main performance requirements of spring steel are high strength and high yield limit and fatigue limit, so spring steel uses high carbon content. However, carbon steel has poor hardenability, so alloy steel must be used for springs with large cross-sections.
As an important element in the industrial system, springs have a large amount of use and a wide variety, so the production of springs is primitive and handmade, and gradually moves towards automation.
