Precision Micro reports an
upturn in demand for flat
springs as a result of the
increasing popularity of specialist
Martensitic stainless chrome steels,
such as Sandvik 7c27mo2.

Traditionally flat springs have
been stamped or laser cut. Precision
Micro says blanking can create
deformation, stressing the material
and compromising flatness and that
laser cutting is a thermal process that
can cause heat stress and leave rough
edges that could be initiation points
for fatigue fracture if not removed
completely. Both generate burrs.

Precision Micro’s standard
chemical machining process is said
to produce perfectly flat springs and
to impose no stress on the material.

The burr-free parts are said to have
an exceptional edge finish with no
lips, pits or surface imperfections
that could become points for fatigue
fracture. In addition, the company
can offer 100% automated optical
inspection that ensures components
are within agreed dimensional limits.

Stand F22