Published: 31 May, 2017
A leading manufacturer of bridge bearings and other critical structural components reports it has invested in a self-contained blast-room from HODGE CLEMCO as part of a major project to upgrade finishing processes at its West Midlands premises.
Freyssinet has specialised for many years in bridge bearings and post-tensioning systems, which are often exposed to adverse weather and other potentially damaging conditions for long periods.
After machining, the high-grade steel components are typically protected with an aluminium base-coat and four coats of marine paint. Hodge Clemco says the blast-room has been designed to enable the company to produce the SA2.5 to SA3 surface profile essential for long-term adhesion of the base-coat and this is achieved using chilled iron abrasive at 8-9 bar pressure.
The new Hodge Clemco blast-room is designed for machined components weighing up to two tonnes to be carried in manually or by lift truck. The chamber is 3 metres long x 3 metres wide, with walls and roof manufactured from double-skin mild steel plate filled with Rockwool slab, which provides effective acoustic insulation. Air inlet ducts and exhaust points around the chamber ensure effective dust extraction and air ventilation equivalent to approximately 3.6 air changes per minute.
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