TECHNOLOGY NEWS:
Cold applied anticorrosive grease for overhead conductors
Vapor-Tek has developed Cablegard, a powerfully anti-corrosive grease which is applied cold and is specifically formulated to protect aluminium, zinc (galvanised) and steel.
Although aluminium is generally considered to be fairly corrosion resistant, it is prone to crevice corrosion. Most overhead power cables/conductors consist of aluminium strands, sometimes reinforced by central strands of galvanised steel (ACSRs). A stranded conductor inevitably presents many crevices as each strand is in contact with its neighbours. Importantly, the zinc of the galvanised reinforcing strands is also prone to crevice corrosion.
The traditional method of combating corrosion has involved the application of molten grease during the manufacture of the conductor. This entails maintaining a large thermally insulated reservoir of permanently molten grease and pumping it to the point(s) of application. The process is somewhat hit-or-miss and generally fails to completely fill the crevices between the conductor strands.
Cablegard eliminates both the crevice corrosion and galvanic corrosion caused by dissimilar metals in mutual contact.
Company: |
Vapor-Tek Ltd |
Country: |
UK |
Fax: |
+44 1204 364576 |
Email: |
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Website: |
www.vapo-tek.co.uk |