Major Selection Criteria: Net Shape

electri2_photo2_caseID133

Electrical Auxiliary Switch Cam

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A starter for large horse-power motors incorporated a fabricated sheet-metal cam bolted to a bracket and welded to a shaft. To simplify manufacturing and reduce cost, the cam design was changed to a single-piece ZA-12, graphite permanent mold casting. Additionally,...
driving2_photo2_caseID170

Driving Gears

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This is an excellent alternative to engineering plastics, aluminium or milled – sintered steel for the realization of driving gears for toothed belts (electronics) or pinion engagement (building, mechanical, precision hardware). Off-tool net shape thin wall zinc die...
fitting2_photo2_caseID168

DragonFly (TM) camp stove – Mountain Safety Research

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The 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...
valvespace2_photo2_caseID167

Double-Diaphragm Pump – Warren Rupp

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For this design, a series of machined stainless steel air valve spacers were replaced with zinc die castings. Because of the spacer’s large flow areas, engineered plastics do not have the required strength to maintain shape and rigidity. Die cast ZA-8 was chosen for...
cupcove2_photo2_caseID130

Cup and Cover of Gas Expander

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Zinc die cast household gas expanders are often unnoticed but have performed reliably for more than 40 years, even as requirements have become stricter. Zinc castings allow meeting of the pressure tightness specification, which is that the assembly is pressure tight...