world-class billet quality
The Wagstaff® AirSlip® Air Casting Technology produces the highest quality billets, known for their smooth surface finish, small shell zone, and uniform-grain structure — the world standard for billet quality.
The AirSlip process uses an optimized mold length, faster casting speed, individual water jets and a unique air-cushion to minimize heat extraction through the mold and enhance secondary cooling. The direct chill (DC) casting process extracts heat through two mechanisms: first through the mold wall as the molten metal contacts it, and secondly through direct contact (or “direct chill”) with a specifically designed water pattern as the semi-solidified billet exits the mold.
Very little mold cooling occurs with AirSlip mold technology, leaving the majority of the heat extraction to direct water quench. This leads to a shallow sump and a very thin-shelled, uniform-grained billet with excellent surface smoothness and high pit recoveries for casters.
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AirSlip Features and Benefits
AirSlip® billet is the world standard for quality
Patented DualJet™ Enhanced Cooling Technology provides optimal cooling performance
Enhanced mold geometry dramatically increases cooling rate
Robust construction - The AirSlip mold is precision machined from a single piece of aluminum
Fast casting speeds and low maintenance
Faster extrusion speeds resulting from small shell zone
- Minimal oil consumption reduces the need for expensive, complex oil cleaning systems
- Minimal water use reduces plant water system costs
- Shorter homogenization cycle reduces energy consumption
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