The majority of our hot wound coil springs are
manufactured from a Micro-alloyed spring steel (grade X4K92M61S) produced by B.H.P or
equivalent. This grade of spring steel gives our springs the ability to withstand higher
operating stresses, while also providing superior resistance to sag. Other grades
including stainless steel and other specialty steels for specific operating conditions are
also avaialble on request.
We produce our fot wound springs from either black or
ground stock in diameters from 9.5mm to 65mm. For smaller diameter material see here.
MANUFACTURING
We have a number of
flexible coil spring winding plants able to produce just about any size of coil spring you
require.
Our computer controlled coil spring
winding machine designed and built in-house is capable of hot winding variable pitch
coil springs in material up to 25 mm. The winder is powered by its own self contained
hydraulic power pack. Each different springs specs. are entered into a custom written
program and then downloaded to the machine from a database by the operator prior to
winding. Once the machine has received the data the operator is only required to feed
heated spring steel bars to the machine and then remove the completed spring ready for
heat treatment.
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MANUFACTURING PROCESSES
All ends are
tapered and hot stamped prior to rolling.
Rolling of the springs is performed as a hot process, then the springs are heat treated
(oil hardened & tempered), shot peened, and scragged.
For details on how to measure a coil spring
see here.
COIL SPRING APPLICATIONS
RAILWAY
We can produce railway coil springs to the Australian Standard AS2903:1986 or American
Standard M-114-72, covering manufacture, surface finish, marking and shot peening of the
spring.
MINING, AGRICULTURAL
Manufactured to your specifications.
