High density electrical contacts containing silver or copper blended with tungsten, molybdenum, and graphite
Semi-refractory alloys for high arcing applications include silver cadmium oxide & silver tin oxide
Over 40 different refractory metal compositions to meet any high voltage and/or high current switching application
Fully staffed R&D department specializing in metallurgy & chemistry
Process
For many applications, we are able to support our in-house production of contact materials with our own copper extrusion facility for the production of specialty shaped hot extruded, colddrawn copper bar. Not only do we produce custom powder metal contacts, but our unique ability to fabricate and assemble complete contact assemblies, ready for installation including attachments of braided wire shunts, related components, springs, and hardware.
Directionally Oxidized AgCdO Fine Silver and Coin Silver Alloys
Equipment
We manufacture and supply high-density powder metallurgically produced refractory metal contact materials that set the industry standard for performance. We operate a fully equipped powder metallurgy department housing specialty powder processing and blending equipment, powder presses rated up to 35 tons, and hydrogen-based batch sintering furnaces. Machined-to size contacts may also be refractory etched and heat cleaned to provide an attachable surface for brazing.
20-35 Tons Powder Press Capacity
Hydrogen-Based Sintering Furnaces
Standard Powder Blending Equipment
Hydraulic Coining to 400 Tons
Autocoining to 60 Tons
Stamping Presses from 18 to 125 Tons
In-House Production for Progressive and Universal Die Sets
Application Engineering
Arcing contact design requires a fine balance between competing engineering criteria – high electrical and thermal conductivity, minimum arc erosion, rapid arc extinguishing, prevention of contact welding, and long life. Depending on your application, several material compositions may meet your needs. Contact us to assist with your design.
Applications:
Motor Controllers
Commercial Lighting and HVAC
On-load Tap Changers
Vacuum Circuit Breakers
Automatic Reclosers
Heavy Duty Switchgear
Automatic Transfer Switches
Utility Network Protectors
Low to Medium Voltage Load Control
Contact A Specialist
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