Casting Study: DragonFly (TM) camp stove – Mountain Safety Research

Major Selection Criteria: Assembly, Dimensional Precision, Net Shape
Alloy: Zamak 3 (ZL3, ZL0400, ZnAI4, alloy 3)
Application Field: Leisure & Sports
Application Size: 0.280/0.880 x 2 in.
Surface Finish: As-Cast
Casting Technique: Pressure Die Casting
Source: Miniature Casting Corp., Cranston, RI

fitting2_photo2_caseID168The original fuel fitting design was an assembly of three screw-machined components–a brass orifice, an aluminum stop block and lock mount, and a stainless steel hose barb. By redesigning the assembly as a one-piece zinc die casting, a 56 percent cost reduction was achieved. The critical function areas include the orifice’s o-ring seat area, which has zero draft, and the fitting’s diameter, which is held to +/-0.002 in.