This mechanical finish also goes by the names Silk Etch, Vapour Blasting, Slurry Blasting, Aqua Blasting and Wet Blasting. It is a mild blasting process where a slurry of water and an abrasive, pressure boosted by air, is pumped through specially designed equipment. Subject to the selection of abrasive and the pressures involved, the finish can range from semi-bright to matt. The use of water in this process gives a smoother finish than that obtained by the traditional dry blasting method.
As the slurry is constantly being recycled, it gives us the ability to add chemicals to the mix, which can degrease or chemically treat the components during the blasting cycle.
Applications for this finish range from surface finishing and smoothing edges to a pre-treatment process for under anodising or E-coating finishes. It will also remove burrs and mill scale.
The vapour blasting process is free from any toxic chemicals, making it uniquely suitable for components that are used in the medical and pharmaceutical industry.