1 WEAR-ARC™ Covered Electrodes Introduction Surfacing is the application of wear-resistant alloys to metal parts subject to destructive wear caused by abrasion, impact, compression, heat, or corrosion. The Wear-Arc electrodes are designed for manual arc welding for surfacing parts. Two types of overlay alloys are recommended to correct destructive wear patterns: Buildup Alloys Because hardsurfacing alloys are limited by maximum thickness of deposit, badly worn parts must be built up prior to depositing the wear-resistant material. Wear-Arc 3 IP, Nickel Manganese, and WH are designed for buildup applications. These alloys possess good deformation resistance and provide a strong bond with the base metal. This helps to prevent roll-over or spalling and provides a sound base for hardsurfacing. Hardsurfacing Alloys Hardsurfacing alloys are designed to provide maximum resistance to specific wear factors or combination of wear factors. The performance of these alloys is in direct relation to the amount of carbide forming elements present in combination with carbon. The carbon reacts with the carbide forming elements—chromium, tungsten, molybdenum, etc.—creating hard carbides from which the overlay material derives its wear resistance. These carbides are evenly distributed in a matrix and as the ratio of carbides to matrix increases, abrasion resistance increases and toughness or ductility decreases. The chart on the following page shows the relative impact resistance or “ductility” and the abrasion or wear resistance of the Wear-Arc line.
Covered
Electrodes
Stainless
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Solid Wire
& Rod
Products
ESAB
TIG & MIG
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Cored
Wire
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surfacing
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Wear-Arc
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Wear-O-Matic
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