Abstract:
3D printing using metal containing multi phase materials is prone to nozzle clogging and flow artifacts. These can be mitigated by monitoring process conditions and taking action at times based on other conditions. Forces, physical regularity, and temperatures can be monitored and service can be taken based on these, immediately, or at dynamic future points, short or longer term, such as completion of a segment or layer, or before critical geometry. Process conditions can be logged and service time can be based on functions of individual and combinations of logged data. Operating windows can be adjusted based on same. Service includes dwell time at high and low temperatures, treatment material provided into the nozzle to change the liquid composition therein. Plungers and fluid jets can expel material from nozzle inlet or outlet. Dwelling at various temperatures can liquefy clogs or cause rupture by disparate volume changes of cooling materials.
Abstract:
A manufacturing method includes: manufacturing a sintered compact haying a composition of (R1) x (Rh) y T z B s M t ; manufacturing a precursor by performing hot deformation processing on the sintered compact; and manufacturing a rare earth magnet by performing an aging treatment on the precursor in a temperature range of 450°C to 700°C. In this method, a main phase thereof is formed Of a (R1Rh) 2 T 14 B phase. A content of a (R1Rh) 1.1 T 4 B 4 phase in a grain boundary phase thereof is more than 0 mass% and 50 mass% or less. R 1 represents a light rare earth element. Rh represents a heavy rare earth element. T represents a transition metal. M represents at least one of Ga, A1, Cu, and Co. x, y, z, s, and t are percentages by mass of R1, Rh, T, B, and M. x, y, z, s, and t are expressed by the following expressions: 27≤x≤44, 0≤y≤10, z=100-x-y-s-t, 0.75≤s≤3.4, 0≤t≤3.
Abstract:
A method of manufacturing a multi-material tubular structure includes spinning a can, depositing a powdered material into the can and compacting the powdered material within the can to provide a tubular structure.
Abstract:
Die Erfindung betrifft ein Verfahren zur Herstellung eines Rohrtargets, das aus einem Mo oder Mo-Legierungsrohr besteht, das einen Sauerstoffgehalt kleiner 50 μg/g, eine Dichte größer 99% der theoretischen Dichte und eine mittlere Korngröße kleiner 100 μm aufweist und das mit einem Stützrohr verbunden ist, wobei die Herstellung durch Strangpressen erfolgt.
Abstract:
The present invention includes a simple, scalable and solventless method of dispersing graphene into polymers, thereby providing a method of large-scale production of graphene-polymer composites. The composite powder can then be processed using the existing techniques such as extrusion, injection molding, and hot-pressing to produce a composites of useful shapes and sizes while keeping the advantages imparted by graphene. Composites produced require less graphene filler and are more efficient than currently used methods and is not sensitive to the host used, such composites can have broad applications depending on the host's properties.
Abstract:
Metal matrix composite granules are disclosed comprising a ceramic phase dispersed in a matrix phase. The matrix phase includes aluminum or an aluminum alloy. The granules have an average particle size in the range of from about 100 µm to about 1,000 µm. Also disclosed are methods for producing the granules or articles or processes for using the granules to produce various articles, among other things.
Abstract:
The invention relates to an additive method for producing metal parts having an amorphous, crystalline and/or semi-crystalline structure for medical technology, rapid prototyping and rapid manufacturing, rapid tooling as well as all domains, in which RP-technologies are used, rapid manufacturing of lightweight components for the aerospace industry (closed honeycomb structures, etc) and the direct production of special parts and replacement parts (Selective Amorphous Metal Extrusion (SAME)). An amorphous, metallic starting material is heated in an extruder (9) by means of an extrusion method to above the glass transition range for generating a thermoplastic behavior, is extruded, is then selectively applied in two dimensions onto a construction platform (10) in the form of an extruded metal thread, and is subsequently cooled, wherein the two-dimensional application and the cooling of the extruded material thread is continued until the metal part is completed. The installation for carrying out the method consists of a three-dimensionally displaceable kinematic system (8), a construction platform (10) and an extruder (9) arranged on the three-dimensionally displaceable kinematic system (8). The extruder (9) comprises an extruder screw (1) for the amorphous, metallic starting material that is to-be extruded, a heated or partially heated housing (2) and an exchangeable nozzle (3) arranged on the housing (2). According to the invention, an active cooling (4) is directed below the nozzle (3) onto the extruded material exiting the nozzle (3).