Passivation, a critical chemical process, enhances the corrosion resistance of stainless steel components by removing residual iron filings and contaminants from machining and fabrication. The reliability and precision of this process have often been challenging, but William Hughes has set a new benchmark. The company now guarantees a standard five-working-day turnaround with an express 24-hour option for urgent needs, ensuring parts are delivered exactly when required.
Located in Stalbridge, Dorset, the William Hughes facility boasts an 80m² clean room and an advanced automated passivation plant. Accredited by Nadcap and approved by Honeywell Aerospace, the process utilises precise chemical treatments to cleanse stainless steel surfaces of contaminants. Unlike traditional methods involving manual component basket transfers, their system employs “fluid transfer,” moving chemical solutions from storage to the processing unit. This innovation eliminates the need for part movement, thus protecting components from potential damage.
The process is entirely automated and controlled via PLC, incorporating nitric acid and rinse cycles, followed by a deionised water rinse. Parts are air-dried in a clean room to prevent recontamination. This meticulous method not only ensures corrosion resistance but also preserves the mechanical integrity and surface finish of the steel, essential for high-stakes manufacturing sectors.
Additional plant capabilities include an ultrasonic passivation facility and a rotary function that allows parts to rotate through the solution, effectively eliminating air gaps in complex and tubular components. Whether for medical instruments, precision-engineered parts, or intricate assemblies, William Hughes delivers results that adhere to stringent industry standards, backed by rigorous quality control and punctual delivery.
