Major Selection Criteria: Complex Shape
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The design requirements for the assembly’s 10-in.-long housing called for non-tapered walls in the meter chamber, allowing free rotation of the metering gears and zero draft in the valve area. Previous designs utilized two aluminum castings requiring secondary...
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The aluminium structural beam must strongly fostered with water proofing to avoid penetration from the rain or washing water. The geometric position must be sound, and operating live must be assured.
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Complexity of the shapes allows for the integration of multiple positions. The non-magnetic character of the zinc alloys compared to the plastics work in favor of the design’s long term dimensional stability and reliability.
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A worm/helical gear set operates the linkage attached to the roof window frame. Originally, the helical gears were machined from brass, reinforced with a formed steel insert and installed with a plastic washer/spacer. The assembled gear’s cost became a factor when...
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Zinc die casting offers numerous advantages over aluminum extrusion in a number of heat sink applications. Die cast zinc heat sinks offer one-piece construction, increased design flexibility, and lower cost. One of the biggest advantages is that heat-dissipating fins...
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