We have fully automatic coiling equipment that coils springs from 0.15 to 5.0 mm diameter wire. We also have the equipment, tools, and personnel to perform secondary looping, bending, and forming operations necessary to produce an infinite variety of compression, extension and torsion springs as well as wire forms.

Designing a Spring ...

Design starts with an understanding of the customer's needs. These needs are considered by us and are integrated in to the design of each particular prototype spring.

At this point, prototype springs are developed and are subjected to grueling test sessions where all facts are analyzed.

When a design has been finalised, the manufacturing planning process begins. Manufacturing high quality springs can only be achieved with true understanding of the requirement of the correct metal alloy wire and modulus-elasticity or spring wire resilience.

Coiling ...

All VCI small size springs are cold coiled on precision spring coilers. After the coiling process, the springs are heat treated. This heat treating is very important since the spring is wound from a one ton ring of heat treated wire stock that is about three meters in diameter, and then formed in to a small coil spring.

Grinding ...

To finish our compression springs, we have a battery of fully automatic grinders that can economically grind your springs to exacting tolerances for squareness, length, and load.

The squareness of compression spring ends influences the manner in which the axial force produced by the spring can be transferred to adjacent parts in a mechanism.

We also have a team of highly skilled hand spring makers to grind springs on heavy duty grinders for complex small volume components. Since springs are flexible and external forces tend to tilt the ends, grinding the extreme squareness is difficult. A spring may be specified for grinding square in the unloaded condition or square under load, but not in both conditions with any degree of accuracy.  When squareness at a specific load or height is required, it should be specified.

Many applications require grinding the ends in order to provide greater control over squareness.  Among these are applications in which (1) high-duty springs are specified, (2) unusually close tolerances on load or rate are needed, (3) solid height must be minimized, (4) accurate seating and uniform bearing pressures are required, and (5) a tendency toward buckling must be reduced.

Heat Treatment ...

Heat Treatment involves hardening the spring by means of heating it to a required temperature and quenching it in a mineral based quenching oil.

The spring is then tempered by re-heating to a pre-determined temperature and held for set period to achieve the required mechanical properties.

The heat treated spring then posses properties that will guarantee its service life and enhance its safety.

Heat treatment of all our springs are done by accurately controlled processes to produce a finished material hardness within recognised specifications.