Ohio processor consolidating

Much of the powder processing industry does not have a strong research history and often lags in technological applications.Fundamental research is performed at universities, with some recent, successful industry-university partnerships in atomization, spray forming, powder injection molding, and advanced ceramics.The transfer of this technology to industry has been effective through industrial hiring of the university graduates. research is on emerging powder-processing technologies to sustain industrial growth.

They are compressible like a gas, but the compression of a powder is essentially irreversible, like the plastic deformation of a solid. Powder-based components are often selected for their low costs, but there are recognized advantages in improved quality, homogeneity, and performance properties.

A few examples illustrate the established diversity of products: lamp filaments, dental restorations, oil-less bearings, spark plugs, aircraft brakes, connecting rods, timing gears, lightweight armor, electrical contacts, nuclear fuel elements, orthopedic implants, business machine parts, high-temperature filters, sporting equipment, horseshoes, and jet-engine disks.

In other cases, the energy used to effect consolidation is detrimental to the structure or properties of the product.

For example, in fusion welding, the heat of melting achieves bonding between the objects but also can create an undesired microstructure in the heat-affected zone of the joint, causing distortion and detrimental residual stresses.

Further, the process sequence is inherently flexible, since it can be applied to a wide range of materials (German, 1994; Jenkins and Wood, 1991; Klar, 1983, 1984; Lenel, 1980).

Powder processing uses a different approach than traditional component fabrication.These consolidated products are typically semifinished and require final thermal or machining processes.In some material systems, consolidation of powders produces feedstock billets for extensive processing into continuous mill products of bar, rod, wire, plate, or sheet.In some cases, the consolidation energy enhances the structure or properties of the material and is an integral part of the process.For example, in the forging of powder preforms, the mechanical energy not only consolidates the powder but also imparts macroscopic geometry to the part while improving the microstructure of the material.The specialization of R&D in the powder processing field is a reflection of the manufacturing segmentation by production schemes and materials.

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