I recently visited a factory in Sheffield which produces coil springs and suspension components for the transport industry.
It was good to see a coil spring machine originally used in the Swindon Railway Works still in use providing springs for today's railway.
Coil-spring manufacturing machine, relocated from Swindon Works.
The spring properties are produced by careful heat treatment of the component as it is passed through a long oven where a series of burners produce the appropriate temperature profile.
One of the Heat treatment ovens for springs.
Production of some parts requires the use of a Shot Peening Booth. Shot peening is a cold working process used to produce a compressive residual stress layer which alters the mechanical properties of the metal by impacting the surface with lead shot, creating plastic deformation.
View inside Shot Peening Booth, showing rotating table, fixture and metal components to be processed.
Lead shot used in the Shot Peening process.
Various Spray Booths are provided for painting finished products.
General view of one end of the Spring Shop. Finished products on the left, work in progress on the right. One of the paint spraying facilities is visible in the background.
Many thanks to Andrew for his courtesy in showing me around the Spring Shop.
My Pictures
The Spring Shop.