Springs - General, Making Process, Company Profiles, Patent, Technology, Suppliers, Report, Guides

General

A spring is a device that changes its shape in response to an external force, returning to its original shape when the force is removed.
The energy expended in deforming the spring is stored in it and can be recovered when the spring returns to its original shape.
Springs are usually made out of hardened steel.
Small springs can be wound from pre-hardened stock, while larger ones are made from annealed steel and hardened after fabrication.
Springs are classified according some of its properties.
Depending on load it can classifies as: Tension/Extension spring, Compression spring, Torsional spring.
In tension/extension and compression there is axial load. On the other hand in the torsional spring there is torsional force.
Most springs (not stretched or compressed beyond the elastic limit) obey Hooke's law, which states that the force with which the spring pushes back is linearly proportional to the distance from its equilibrium length.

Making

Steel alloys are the most commonly used spring materials. The most popular alloys include high-carbon (such as the music wire used for guitar strings), oil-tempered low-carbon, chrome silicon, chrome vanadium, and stainless steel.
Other metals that are sometimes used to make springs are beryllium copper alloy, phosphor bronze, and titanium.
Rubber or urethane may be used for cylindrical, non-coil springs. Ceramic material has been developed for coiled springs in very high-temperature environments.
Manufacturing process of steel-alloy, coiled springs include Coiling, hardening, and finishing.

Technology and Applications

A Company in California uses HELI-CAL Flexure technology to produce high performance, machined springs in a way that takes much of the guesswork out of the design and manufacturing processes.
The gas springs of the LIFT-O-MAT and BLOC-O-LIFT series from STABILUS provide comfortable and safe lifting, lowering, and positioning of flaps, lids, and hoods.
STABILUS has also developed highly compact gas spring types for trailer applications, they are easy to install and follow the rules of space optimization.
The gas springs of are also used for the manufacture of highly functional and ergonomic vehicle and airplane seats

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