Abstract:
Described herein are novel aluminum-containing alloys. The alloys are highly formable, exhibit high strength and corrosion resistance, and are recyclable. The alloys can be used in electronics, transportation, industrial, and automotive applications, just to name a few. Also described herein are methods for producing metal ingots and products obtained by the methods.
Abstract:
The subject of the invention is a process for the production of at least partly thin-walled and aluminium castings with sand moulding technology by gravity casting, which allows producing casts with 100 times or favourably 200-400 times larger overall dimensions in case of 1-3 mm wall thickness. The main idea of the process is that sand mould containing mould cavity is provided, melt of aluminium content is produced, the melt is introduced into the mould cavity at several points through a gating system of narrowing cross section. A further subject of the invention is a sand mould fitted with a gating system to produce at least partly thin-walled castings with sand moulding technology, by gravity casting. The wall thickness of thin-walled segments is 1-3 mm and the largest dimension is more than a 100 but favourably at least 200-400 multiple of the wall thickness. The main idea behind the sand mould with a gating system is that it contains a mould cavity allowing the production of at least partly thin-walled castings, and is equipped with a gating system, which is composed of at least two sprues and one ingate to each having a porthole into the mould cavity and in liquid contact with the sprues.
Abstract:
Sphärogusslegierung sowie Gussstücke und deren Herstellverfahren mit perlitischferritischem Gefüge für Gusseisenprodukte mit einer hohen Festigkeit bei gleichzeitig guter Duktilität und Zähigkeit bereits im Gusszustand, umfassend als Nicht-Eisenbestandteile C, Si, Ni, Mn, Cu, Mg, Cr, Al, P, S und den üblichen Verunreinigungen, dadurch gekennzeichnet, dass die Sphärogusslegierung 2.8 bis 3.7 Gew.% C, 1.5 bis 4 Gew.% Si, 1 bis 6.2 Gew.% Ni, 0.02 bis 0.05 Gew.% P, 0.025 bis 0.06 Gew.% Mg, 0.01 bis 0.03 Gew.% Cr, 0.003 bis 0.3 Gew.% Al, 0.0005 bis 0.012 Gew.% S, 0.03 bis 1.5 Gew.% Cu und 0.1 bis 2 Gew.% Mn, Rest Fe und unvermeidbare Verunreinigungen enthält, wobei die Sphärogusslegierung im Gusszustand ohne anschliessende Wärmebehandlung eine hohe statische Festigkeit von einer 0.2%-Dehngrenze ≥600 MPa und einer Zugfestigkeit ≥750 MPa bei gleichzeitig guter Duktilität von einer Bruchdehnung A5 von 2 bis 10 % erreicht.
Abstract:
La présente invention concerne un procédé de fabrication d'une pièce micromécanique réalisée en un premier matériau, ledit premier matériau étant un matériau apte à devenir au moins partiellement amorphe, ledit procédé comprenant les étapes suivantes : a) se munir d'un moule réalisé dans un second matériau, ledit moule comportant une empreinte formant le négatif de la pièce micromécanique ; b) se munir du premier matériau et le mettre en forme dans l'empreinte dudit moule, ledit premier matériau ayant subi au plus tard au moment de ladite mise en forme un traitement lui permettant de devenir au moins partiellement amorphe; c) désolidariser la pièce de micromécanique ainsi formée du moule ;
Abstract:
A method of manufacturing a component of a turbomachine by powder metal hot isostatic pressing is disclosed, which uses a container defining outside surfaces of the component. A metal insert is located inside the container before filling the container with metal powder, and the insert is left in the component after the end of its manufacturing. In an embodiment, a metal core is located inside the container before filling the container with metal powder, and the core is removed from the component before the end of its manufacturing. In this way, net shape surfaces may be obtained without manufacturing trials.
Abstract:
Die Erfindung betrifft ein Verfahren zur Herstellung und Wärmebehandlung eines Gusswerkstückes (1) aus Gusseisen mit Kugelgraphit in einer Sandform (2). Die Sandform (2) enthält mindestens einen Kern (3), welcher eine Kühlmittelzuführung (4) aufweist, vorzugsweise in Form eines oder mehrerer im oder zum Kern (3) hin verlegter Rohre, mittels welcher der Kern (3) mit einem Kühlmittel (5), vorzugweise Wasser, versetzt werden kann. Das Verfahren zur Herstellung und Wärmebehandlung enthält mehrere erfindungsgemässe Schritte.
Abstract:
The invention relates to a method for casting castings, wherein a metal melt is poured into a mold cavity (3), which is bounded by a casting mold (G1, G2) and represents the casting, via a feeder (2) or separate runners or casting channels, wherein the casting mold (G1, G2) comprises mold parts (4-7) that determine the shape of the casting to be cast, and a casting mold (G1, G2). The casting method according to the invention and the casting mold ensure the production of functionally correct and flawless castings even under the conditions explained above. According to the invention, this is achieved in that the melt is conducted into the mold cavity (3) via at least two connections, of which at least one is designed as an additional channel (16, 23) that leads through one of the mold parts and is independent of the contour of the casting to be cast, in at least two sections (8, 9, 10, 19, 20), which are associated with different levels of the casting to be cast.
Abstract:
A process for making a turbine rotor includes steps of providing a shaft made of a first metal composition and having an integral pin projecting axially therefrom, providing a mold that defines a cavity for investment casting a turbine wheel, disposing the pin within the cavity of the mold, pre-heating the mold and the pin to a mold temperature, pouring a molten second metal composition into the cavity of the pre-heated mold such that the molten second metal composition envelopes the pin within the cavity, and controlling the process so that the pin acts as a chill member causing the second metal composition around the chill member to solidify with a finer equiaxed grain structure than would be the case without the chill member. The turbine wheel is joined to the shaft via the casting of the turbine wheel about the pin.
Abstract:
The present invention relates to a cooling device (1) for cooling a component produced in a lost foam casting method by means of an EPS model (4), the cooling device (1) having at least one cooling element (2, 3) which can be disposed flat on at least one region of the EPS model (4), wherein the at least one cooling element (2, 3) can be fixed in a materially bonded and/or non-positive manner to the at least one region of the EPS model (4). Furthermore, the invention relates to a method for cooling a component produced in a lost foam casting method by means of an EPS model (4).