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  • TAIXING HONGYE STEEL WIRE MANUFACTURING CO.,LTD

  •  [Jiangsu,China]
  • Business Type:Manufacturer
  • Main Markets: Africa , Asia , East Europe , North Europe , Other Markets , West Europe , Americas , Caribbean , Europe , Middle East , Oceania , Worldwide
  • Exporter:21% - 30%
  • Certs:ISO9001, CE, EMC
TAIXING HONGYE STEEL WIRE MANUFACTURING CO.,LTD

TAIXING HONGYE STEEL WIRE MANUFACTURING CO.,LTD

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Home > Industry Information > Hardware Knowledge Base: "Spring Wire"

Industry Information

Hardware Knowledge Base: "Spring Wire"

2018-07-31 01:41:23

Spring wire use characteristics and uses

The spring is used in the elastic range and should be returned to its original position after unloading. It is desirable that the plastic deformation be as small as possible. Therefore, the Steel Wire should have high elastic limit, yield strength and tensile strength. The higher the yield ratio is, the closer the elastic limit is to the tensile strength, and the more the strength can be increased, the stronger the elasticity of the spring produced.

Springs rely on elastic deformation to absorb impact energy, so the Spring Steel Wire does not necessarily have a high degree of plasticity, but at least it must have the plasticity to withstand the spring forming, and enough toughness to withstand impact energy.

Springs usually work under alternating stress for a long period of time, and therefore have high fatigue limits, as well as good resistance to creep and relaxation.

Springs used in specific environments also have special requirements for Steel Wires. For example, springs used in corrosive media must have good corrosion resistance. Springs used in precision instruments should have long-term stability and sensitivity, low temperature coefficients, high quality factors, little aftereffects, and constant elastic modulus. Springs operating at high temperatures require sufficient elastic limit and good creep resistance at high temperatures.

In addition, spring steel wire forming process and heat treatment process should also be considered. The Cold Drawn Spring Wire and the oil quenched and tempered spring steel wire are all directly wound with springs in the delivery state. After the spring is formed, it is directly used by stress relief treatment. The tensile strength of the cold drawn spring wire is slightly higher than that of the oil quenched and tempered steel wire. Large-size cold-drawn steel wire is too elastic, so it is difficult to wind the spring. Therefore, the cold-drawn spring wire should have a specification of less than 8.0 mm, and the oil quenched and tempered wire should have a specification of less than 13.0 mm. Actually, the spring of 13.0mm in diameter is selected from the light-tension state spring steel wire, and the cold drawn winding shape is used for quenching and tempering. Most of the steel wires with a diameter of 15.0mm or more use springs made of a heat-wound process.

classification

The spring can be divided into a static spring and a dynamic spring depending on the operating state. Static spring refers to springs with a limited number of vibrations during service, such as safety valve springs, spring washers, pan springs, constant load springs, mechanical springs, watch hairsprings, etc. Dynamic spring refers to springs with more than 1×106 vibrations during service period, such as engine valve springs, vehicle suspension springs, shockproof springs, coupling springs, and elevator buffer springs. The static strength and stability are mainly considered in the selection of static springs, and fatigue, relaxation, and resonance performance are mainly considered in the selection of dynamic springs.

The springs can be classified into light load, normal load and heavy load according to the load conditions. Light load refers to a spring that receives static stress, low stress, and small deformation, such as a spring for a safety device and a spring for absorbing a vibration. Design life 103 to 104 times.

The general load refers to an ordinary spring with a design life of 105 to 106 times and a vibration frequency of 300 times/min. Within the allowable stress range, the life guarantee is 1×106 times, and the lower the load stress, the longer the service life.

Heavy load refers to springs that work for a long time and have frequent vibrations. Such as valve springs, air hammers, presses, and hydraulic controller springs, which have high loads, are often used at less than about 10% of the allowable stress. The service life is more than 1×106 times, usually 107 times.

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