MCD Engineering Group
Matching Sprue Velocity and Using Surface Tension to Stabilize Flow 1. Introduction Most runner systems in metal casting are designed using traditional gating ratios that attempt to manipulate metal velocity at various locations within the system. However, these approaches often overlook the fundamental issue of maintaining consistent flow rate through the sprue and runner system. … Read more
BATNEEC — Best Available Technology Not Entailing Excessive Cost — is one of those regulatory ideas most engineers recognize instinctively, even if they have not encountered the acronym recently. Originating in UK and European environmental regulation, it was intended to prevent poor practice from being defended purely on the basis of cost. Within foundries, BATNEEC … Read more
The way molten metal is introduced into a mold directly influences casting soundness, defect rates, and yield. Among the available methods, bottom pouring has proven to be highly effective for minimizing turbulence, improving filling patterns, and enhancing casting quality. The velocity of molten metal at the ingates, which dictates whether the flow is laminar, transitional, or turbulent — and … Read more