Submerged arc welding differs from other arc-welding processes in that a blanket of fusible, granular material - commonly called flux - is used for shielding the arc and molten metal. The arc is struck between the work-piece and a bare wire electrode, the tip of which is submerged in the flux. Since the arc is completely covered by the flux, it is not visible and the weld is run without the flash, splatter, and sparks that characterize the open arc process.

Benefits:

• Used with all types of joints
• Permits welding a full range of carbon and low-alloy steels
• Permits welding of some high-alloy, heat treated and stainless steels
• Favored process for rebuilding and hard surfacing
• Good ductility, impact resistance and uniformity in bead appearance
• Mechanical properties that are at least equal to those of the base metal are consistently obtained

Coldspray

The most versatile powder delivery systems with the ability to apply both fused and non-fused coatings. High spray rates in all positions, including internal bores.

Benefits:

• Enhanced resistance to abrasion and erosion
• Thermal barrier coatings
• Galvanic protection of iron and steel
• Dimension restoration
• Corrosion protection at elevated temperatures
• Friction wear resistance
• Improved bearing surfaces

Hard Facing

Fusion hardfacing is a process by which weld materials, with superior properties than the substrate, are applied to the substrate. Common hardfacing techniques include arc, torch, and other processes.

Hot Spray

This system deposits fused metallurgical bonded coatings to a wide range of base metal types. Excellent for applications involving cast iron repair, casting salvage, mold repair, screw and fan protection and valve repair.

Benefits:

• Precision coatings on fine edges
• Blanket coatings on cylindrical parts in rotation or to flats
• Coatings to a variety of base metals
• Metal powders are bonded to the base metal with minimal distortion and warping
• Coating formulas available to protect against abrasion, erosion, corrosion, impact and point loading
• Coatings ranging from 0.003" to 0.25" (.07 to 6 mm) can be applied in a single pass

Spray and Fuse

For spray and fuse, the powder is first deposited on the metal surface, then heated further to form a continuous hard surface layer. Fused coatings are a useful tool in the repair of shafts such as valve stems and pump plungers. Coatings thick-ness may exceed 0.060" without loss of bond strength. Deep scoring in packaging areas that had been chrome plated initially may operate better with fused coating because of the added protection from corrosion provided by the dense, fused overlay and the added bonus of a metallurgical bond.