Surface World August 2019 Surface World August 2019 | Page 66

PRE-TREATMENT, SURFACE PREPARATION, DEGREASING & CLEANING After the wash cycle, the door to the Turbex process chamber can be seen rising automatically to reveal the cleaned pump components, which are pulled out manually onto the waiting rail-mounted carriage. Most components are washed in a single cycle, but one category of parts - bearing housings - require two. They have to be rinsed, hence the need for a second water tank, so the process takes a little longer. Component cleanliness is essential to ensure reliability of assembled pumps. The Siemens control system of the Turbex AC-1.7-2. Lawrence Bradbury, Director of Engineering at Selwood commented, “Even though we were impressed with the original Turbex machines, which had given two decades of good service, before replacing them we looked around at cleaning equipment on the market to see what was available. “We took a batch of dirty castings to the Turbex technical centre in Alton, where their staff carried out a demonstration in a similar AC-1.7. The parts came out perfectly clean in a cycle time of just under 10 minutes, so we took the decision there and then to invest in this type of equipment.” 64 AUGUST 2019 As part of the deal, Turbex also supplied a second washing machine, a CL-800, for which the two old aqueous rotating-drum machines were part exchanged. This equipment is used for processing smaller items that go into Selwood’s products, such as air pump components. Visit: www.turbex.co.uk twitter: @surfaceworldmag