Net-shape manufacturing

Spray Deposition Net or Near-Net Shape Manufacturing - Spray Forming - Spray Casting - Spray Rolling... 

Greil P (1997) Near Net Shape Manufacturing of Polymer Derived Ceramics In Baxter J, Cot L, Fordham R Gabis V, Hellot Y (eds) Euro Ceramics 5 Part 3- Key Eng Mat 132-136 Trans Tech Publications, Switzerland, p 1981... 

Statham, M., Hammett, E., Harris, B. et al.. Net-shape manufacture of low-cost ceramic shapes by freeze-gelation, J. Sol-Gel Sci. TechnoL, 13, 171, 1998. 

Kaya, C. and Butler, E.G., Near net-shape manufacturing of alumina/zirconia high temperature ceramics with fine scale aligned multiphase microstructures using coextrusion, /. Mater. Proc. Tech. 135 (2003) 137-143. 

Special Applications NEAR-NET-SHAPE MANUFACTURING EXAMPLES 568 3.6.1. Thixoforging 3.6.2. Near-Net-Shape Processes for 584... 

Near-net-shape manufacturing can cover the whole component, but also only parts of it, such as functional surfaces of outstanding importance. 

To keep the manufacturing industry competitive in today s global markets, innovative products must constantly be developed. But high product quality also has to be maintained at reasonable costs. At the same time, common concerns such as protecting the environment and making careful use of resources must be kept in mind. Near-net-shape manufacturing has to cope with these considerations. 

Components and final products of better functionality, such as moldings of reduced wall thickness, diminished allowances, fewer geometric deviations, and enhanced surface quality (near-net-shape manufacturing), can be produced to an increasing extent due to the constantly advancing primary shaping methods. 

NEAR-NET-SHAPE MANUFACTURING EXAMPLES IN ADVANCED PROCESS CHAINS... 

Why is it difficult to use injection molding for near net shape manufacturing ... 

Near-Net-Shape Manufacturing Light depth of cut applications with close tolerance requirements, such as near-net-shape parts, are well suited for cermets because of their unique performance characteristics. Technological advances in the forging and casting industries permit production of raw products that require minimal material removal during machining operation. 

Near-net-shape manufacturing can benefit from the capabilities including Iraiger tool life and highermachining speeds of cermet cutting tools. 

Pasture C, Ko FK, Near net shape manufacturing of composite engine components by 3-D... 

Pastore, C.M., Ko, F.K., 1989. Near net shape manufacturing of composite engine components by 3-D fiber architecture. In The Gas Turbine and Aeroengine Congress and Exposition, Toronto, June 4-8, 1989. The ASME fhiblication, 89-GT-315. 

RMI can achieve near-net shape manufacturing with quick processing time and low cost. The present investigations mainly focus on the fabrication process of simple shaped materials and property evaluation of the as-produced materials. Complex shaped components with excellent ablation resistance and high strength are needed in the future applications. Efforts should be made to fabricate these complex shaped components with excellent properties by RMI. 

Polymers have replaced metals in components for a myriad of reasons. One of the major issues is cost. The lower cost of polymer parts is due to two major considerations. First, the cost of polymers per unit weight is cheaper than metals. Coupled with this is Ihe typically net shape manufacture of polymer parts. While some polymeric materials are machined from sohd material, most polymer components are made by processes such as injection molding. Often there is no additional machining, beyond removal of flash or molding sprues, to add to the cost of a polymer component. This is in contrast to metal components, which often require significant machining time and costs. Machining of a metallic component can often be the donfinant cost of the part. 

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