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Polymer Castings take on metals
semicircular drum has an as-cast accuracy of 0.001-in. TIR. Polymer/ aggregate makes up all structural components of this milling machine except for the table. This grinder-base mold uses off-the-shelf 2-in.-diameter PVC tubing for drain lines, which are cast in place. Flat scanner cast to 0.001-in. flatness
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Magnesium parts with muscle
Automotive designers are specifying die-cast magnesium parts in applications once dominated by aluminum, zinc, and other structural materials. Production and New Program Manager, Magnesium and Intermediate Zinc Castings FisherCast Global Corp. Peterborough, Ont. Magnesium alloys increasingly
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Magnesium
As the lightest structural metal available, magnesium's combination of low density and good mechanical strength results in a high strength-to-weight ratio. Because of their low modulus of elasticity, magnesium alloys can absorb energy elastically. Combined with moderate strength, this provides
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Carbon Steel
bars, U-bolts, and universal joints. Other uses are sucker rods for oil wells and anchor bolts for the construction industry. Mechanical properties: Cast and wrought products are often specified to meet distinct mechanical requirements in structural applications where forming and machining
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Steering knuckles deck the competition
covers on GM inline fourcylinder engines. The aluminum cam cover was cast using a threeplate die with a central gating system. This technique let designers optimize flow channels and solidification patterns to boost performance. The design maintains structural integrity at temperatures to 300°F (150
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RIM goes bumper to bumper
, the construction market has demanded chemical-resistant, rigid polyurethane materials to replace cast iron and concrete. The result: the recent introduction of a family of solid polyurethane RIM materials that meet the demanding requirements of such underground applications as wastewater treatment and grinding
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Stronger and Lighter -- Composites Make Their Mark
over such traditional materials as steel, aluminum, cast iron, and granite. Mention composites and engineers tend to think of carbon-reinforced epoxy and glassfiber- reinforced polymers (polyester, vinyl ester, and nylon). However, composites fall into four key classes: PMCs, metal-matrix composites
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Blow-moldable TPVs give silicone rubbers the boot
. Advertisement. Related Content. Get High-Gloss Parts with Reinforced Polyester Resin and Gas-Assisted Injection Molding. Die-Cast Metal Parts Handle Structural, Thermal, Electrical, and Environmental Tasks. Bright-Acid Zinc-Plating Process. Cost-conscious molding. Cable goes Twist-Friendly