Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering Apparatus specially adapted therefor; Presses and furnaces

BPERFORMING OPERATIONS TRANSPORTING B22Casting metals B22FWORKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER MAKING METALLIC POWDER

B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering Apparatus specially adapted therefor; Presses and furnaces

B22F3/001Starting from powder comprising reducible metal compounds B22F3/002Manufacture of articles essentially made from metallic fibres B22F3/003Apparatus B22F3/004Filling molds with powder B22F3/005Loading or unloading powder metal objects B22F3/006Amorphous articles B22F3/007by diffusion starting from non-amorphous articles prepared by powder metallurgy B22F3/008Selective deposition modelling B22F3/02Compacting only B22F3/03Press-moulding apparatus therefor B22F3/04by applying fluid pressure B22F3/045Semi-isostatic pressure B22F3/06by centrifugal forces B22F3/08by explosive forces B22F3/087using high energy impulses B22F3/093using vibrations or friction B22F3/10Sintering only B22F3/1003Use of special medium during sintering B22F3/1007Atmosphere B22F3/101Changing atmosphere B22F3/1017Multiple heating or additional steps B22F3/1021Removal of binder or filler B22F3/1025not by heating only B22F3/1028Controlled cooling B22F3/1035Liquid phase sintering B22F3/1039by reaction B22F3/105by using electric current other than for infra-red radiant energy , laser radiation or plasma; by ultrasonic bonding B22F3/1055Selective sintering B22F3/11Making porous workpieces or articles B22F3/1103with particular physical characteristics B22F3/1109Inhomogenous pore distribution B22F3/1112comprising hollow spheres or hollow fibres B22F3/1115comprising complex forms B22F3/1118comprising internal reinforcements B22F3/1121by using decomposable, meltable or sublimatable fillers B22F3/1125involving a foaming process B22F3/1134Inorganic fillers B22F3/1137by coating porous removable preforms B22F3/114the porous products being formed by impregnation B22F3/1143involving an oxidation, reduction or reaction step B22F3/1146After-treatment maintaining the porosity B22F3/115by spraying molten metal B22F3/12Both compacting and sintering B22F3/1208Containers or coating used therefor B22F3/1216Container composition B22F3/1225Glass B22F3/1233Organic material B22F3/1241layered B22F3/125Initially porous container B22F3/1258Container manufacturing B22F3/1266by coating or sealing the surface of the preformed article B22F3/1275by coating a model and eliminating the model before consolidation B22F3/1283Container formed as an undeformable model eliminated after consolidation B22F3/1291Solid insert eliminated after consolidation B22F3/14simultaneously B22F3/15Hot isostatic pressing B22F3/156by a pressure medium in liquid or powder form B22F3/16in successive or repeated steps B22F3/162Machining, working after consolidation B22F3/164Partial deformation or calibration B22F3/168Local deformation B22F3/17by forging B22F3/172Continuous compaction B22F3/177Rocking die forging B22F3/18by using pressure rollers B22F3/20by extruding B22F3/204Continuous compaction with axial pressure and without reduction of section B22F3/22for producing castings from a slip B22F3/222by freeze-casting or in a supercritical fluid B22F3/225by injection molding B22F3/227by organic binder assisted extrusion B22F3/23involving a self-propagating high-temperature synthesis or reaction sintering step B22F3/24After-treatment of workpieces or articles B22F3/26Impregnating