Secondary Draw Process
Secondary Draw Process - Related Videos
11:57
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Cited by 23 •
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Metamaterials at terahertz frequencies offer unique opportunities, but are challenging to fabricate in bulk. We adapt the fabrication procedure for microstructured polymer optical fibers to inexpensively fabricate metamaterials potentially on an industrial scale. We produce polymethylmethacrylate fibers containing ~10 μm diameter indium wires separated by ~100 μm, which exhibit a terahertz plasmonic response.
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Motor Learning in Mirror Drawing
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Source: Laboratory of Jonathan Flombaum—Johns Hopkins University Colloquially, the terms learning and memory encompass a broad range of behaviors and mental systems, everything from learning to tie a shoe to mastering calculus (and a lot in between). Experimental psychologists have divided up learning mechanisms into groups that seem to have different properties, and that seem to rely on different brain systems. A major division is between declarative and non-declarative memory, roughly, the...
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Drawing Free-body Diagrams: Rules
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2023
The first step in describing and analyzing most phenomena in physics involves the careful drawing of a free-body diagram. Free-body diagrams are useful in analyzing forces acting on an object or system, and are employed extensively in the study and application of Newton's laws of motion. The steps to draw a free-body diagram are listed below: • Draw the object under consideration. If treating the object as a particle, represent the object as a point. Place this point at the origin of a...
05:27
Drawing Blood from Rats through the Saphenous Vein and by Cardiac Puncture
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Secondary Healthcare System
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2023
Secondary healthcare is offered by a specialist, generally in hospitals or clinics for patients referred by primary healthcare providers. It occurs when a person has an illness or injury that requires specific medical care. Secondary care is often referred to as acute care. Secondary care can range from uncomplicated care to repair a minor laceration or treat a strep throat infection to more complicated emergent care, such as treating a head injury sustained in an automobile accident. Whatever...
FAQs
The selected reduction ratio determines how much the workpiece’s diameter or cross-sectional dimensions change during a pass. Engineers choose it according to the target dimensions, material properties, and the need to maintain continuity and surface quality. This makes reduction ratio an important control for balancing dimensional precision with the desired final performance of the drawn product.
Drawing speed, temperature, lubrication, reduction ratio, and material properties all influence the result. Controlled tension helps sustain the drawing operation, while the other variables affect how the material deforms and whether the process maintains surface quality and dimensional accuracy. Engineers adjust these conditions to support consistent products and efficient manufacturing.
The second operation gives engineers another controlled opportunity to refine a partially drawn workpiece. Passing it through a smaller die can bring the product closer to its required final dimensions while supporting tighter tolerances and specified performance. This staged approach is useful when one drawing operation does not provide the needed precision or cross-sectional size.
The process begins with a workpiece that has already undergone an initial drawing operation. Engineers then guide this partially drawn material through a smaller die or drawing tool and pull it under controlled tension. The material undergoes further plastic deformation while remaining continuous, with speed, temperature, lubrication, and reduction conditions managed to support surface quality.
Secondary drawing applies to elongated products such as wires, tubes, and fibers, as well as other products that need further dimensional refinement. It is particularly relevant when manufacturers require tighter tolerances, specific final dimensions, enhanced strength, or improved performance. The process therefore supports varied engineering products whose geometry and quality must be closely controlled.
Engineers can evaluate whether the product reaches its specified final diameter or cross-sectional dimensions, maintains continuity, and preserves acceptable surface quality. They can also consider whether the operation supports tighter tolerances, enhanced strength, or other required performance characteristics. Comparing these outcomes with manufacturing efficiency helps determine whether the selected process conditions are appropriate.