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Non Ferrous Products Inc.
A Subsidiary of: IBC advanced alloys
Copper Forgings: Beryllium Copper, Chrome Copper, Aluminum Bronze
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Nonferrous Products manufactures and distributes individually upset-forged and heat-treated seam welding wheels, tube mill electrodes, plate and bar. Most products are available from inventory, or can be custom made to meet your specific needs

There is a direct relationship between production down-time and the method of manufacture of seam welding wheels (resistance welding electrodes). Individually upset-forged welding wheels outperform cast wheels every time, making them the clear choice for extending electrode life. Many RWMA suppliers do not understand the importance of, and do not supply, individually forged wheels.


Why upset-forged seam welding wheels perform better,
last longer . . .
  • Individually upset-forged seam welding wheels increase production up-time and enhance weld performance because of their fine equiaxed grain microstructures.
  • Fine radial grain flow, the essential property for minimizing premature edge deformation, can only be produced by the upset forging process. Each wheel must be individually forged and heat treated to develop this advantageous microstructure.
  • Cast wheels, produced without forging, have large columnar grain structures that contribute to edge chipping and flaking, unreliable performance and higher production costs.
How to tell them apart . . .
  • Forged and cast wheels look alike and have similar hardness and electrical conductivity properties. On the surface it's hard to tell them apart. But, when the surfaces of both wheels are chemically etched, the difference in grain structure is revealed. (See photos at right.)
  • Nonferrous Products' upset-forged wheels (Photo 1) The surface of the lower wheel is etched, revealing the fine grain structure that ensures reliable performance.
  • Cast wheels (Photo 2) The lower wheel, which is etched, reveals the inherent weakness of cast wheels -- large, columnar grain structure that results in chipping, flaking and unreliable performance.

Seam Welding Electrodes 

Individually forged . . . for Performance You Can Depend On

Forged Wheel

(1) Pictured above, are individually upset forged welding wheels. Lower wheel is etched, revealing the fine grain structure that ensures reliable performance.

Cast Wheel

(2) Cast wheels.
Upper wheel looks like an upset-forged wheel. But, after an etch test, the lower cast wheel reveals the large, columnar grain structure that results in chipping, flaking, unreliable performance -- all  adding up to higher production costs!

 

Forged electrodes are available --  forged and heat treated-only, or fully machined-to-print -- in RWMA Class 2, 2-premium, 3 and 4 materials. Go to Resistance Welding Alloys to select materials