Spring manufacturers are companies that produce a variety of springs such as: coiled springs, compression springs, tension springs, torsion springs, leaf springs, flat springs, leaf springs, clips, spring washers, and pressings, etc. These manufacturers produce springs for their clients per the specifications and may even offer spring design services. Spring manufacturing is a specialized operation, and in addition to coil forming machines, the manufacturers may even have suitable heat treating and coating facilities on site.
These manufacturing companies also test the springs for different parameters such as: dynamic, static and shock loads. Compression, tension and tensional tests and failure analysis is also very important to ensure that the springs perform as desired and do not fail prematurely. Hardness is a very critical feature as greater than the required hardness can make the springs brittle and not enough hardness can make the springs too soft and unfit for use. Spring forming machines can accommodate wires up to a specific range. In addition, the manufacturer needs to have the facilities to form bends, hooks and eyes for the spring mounting.
Springs are one of the most commonly used mechanical devices in the world as they are found in a wide variety of items such as: toys, watches, cars, audio systems, pens, computers, airplanes, chairs, pressure gauges, scientific instruments and various types of machinery, etc.
Springs are flexible items that are constructed from round or rectangular cross section wires which are prepared from special spring steel materials such as: high carbon spring steel, alloy spring steel, stainless steel, copper base alloys, and nickel base alloys, etc. However, a spring could technically be any device which stores potential energy in it by putting strain on the atomic bonds of elastic material. For instance a rubber band could be considered a spring as it has the capability to transfer energy if it is used properly.
The most common type of spring is used is considered to be a torsion spring, such as a coil, or helical spring. If you want to see an example of this type of spring, just take the top section of a typical push button, writing pen off and look. Inside the chamber of the pen will be a coil spring.