Note that the rotation direction of the spring is left-handed, not right-handed. When it is necessary to check the inner diameter of the spring, add the symbol D 1 after the D2 value.
Example of marking: the diameter of the material is 3mm, the middle diameter of the spring is 20mm, the free height is 80mm, and the verticality accuracy of the load, inner diameter, free height, axis and both ends of the ring is level 3. Materials are carbon spring steel wire group II and right-handed spring with surface oxidation treatment; Compression spring 3×20D 1×80 GB2089-80.
Extended data
The steel wire spring of compression spring is used in all types, from household appliances to electrical equipment and motors, because it is the required spring type. When a load acts on them or their ends are compressed, the design of the compressed wire tries to restore the spring to its original shape, so the load is pushed back. Main application directions: medical breathing equipment, medical mobile equipment, hand tools, home care equipment, shock absorption, engine valve springs.
The compression spring resists external pressure. Generally, compression springs are wires wound at equal intervals and have a fixed wire diameter. Compression springs use multiple open coils to resist external pressure (such as gravity pressing on wheels or body pressing on mattresses). Generally, compression springs are wires wound at equal intervals and have a fixed wire diameter.
In addition, there are conical compression springs, or a combination of conical and linear springs. According to different application fields, compression springs can be used to resist pressure and/or store energy. Circular steel wire is the most commonly used compression spring, but there are also compression springs made of square, rectangular and special-shaped steel wire.
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