FEATURE NEWS:
To detect long and short defects in hot wire rod
Detection of long defects in hot wire at temperatures averaging 1,000°C is now possible with eddy-current techniques developed by M.A Nordic, Sweden, a subsidiary of Magnetic Analysis Corp., USA, a leader in the development and production of non-destructive testing equipment for metal products. For many years, companies have inspected hot wire rod for short defects on the rolling mill, using water-cooled, eddy-current encircling test coils. However, many common defects in hot wire products are long and continuous because of the typical rolling and drawing production processes. The encircling coil method fails to respond to these long defects, sensing only intermittent quick changes in the wire.
The new Rotomac® BQ rotary eddy-current test system has been designed to detect long, continuous defects in hot wire during production. Used in conjunction with an encircling coil eddy-current test, the system offers reliable detection of both short and long defects in hot wire. The rotary eddy-current test utilises test probes, which spin around the wire as it passes through. The helix test pattern that results, detects long defects which are present at each pass. By using rotary probes to detect long defects, in combination with an encircling coil system for shorter defects, the widest range of defects will be detected, even at the high through put speeds, typical of wire production. Systems for wire ranging up to 37mm Ø are available. Customers who already have an encircling coil system can upgrade to a Rotomac® BQ system with the addition of the rotary tester. For new installations, customers can install the complete system or begin with either an encircling or rotating test, depending on the type of defects that are most prevalent.
Company: |
Magnetic Analysis Corp |
Country: |
USA |
Fax: |
+1 914 699 9837 |
Email: |
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Website: |
www.mac-ndt.com |