Hot on the heels of its fatigue testing facility, William Hughes has added salt spray testing to its canon of quality control procedures. Salt spray testing exposes springs and other components to a saline fog environment in order to ascertain their corrosion resistance. Equipment required for the salt spray chamber comprises a holding tank with its salt solution of pH 4 to 6 and a cabinet where the solution is atomised using pressurised air. The samples to be tested are then exposed to this extremely corrosive saline fog for the requisite amount of time, which can be days or weeks depending on the standard to be achieved.
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