摘要:
A method for the additive manufacturing of a component includes: the additive building up of a structure from a base material for the component by an additive manufacturing method; the introduction, during the additive building up of the structure, of a porous auxiliary structure into an interior of the structure to define a functional area for the component in the interior; and the removing, in particular melting, of the porous auxiliary structure from the functional area by heating the auxiliary structure so that the functional area no longer has the auxiliary structure. A component is produced in accordance with the method and a corresponding device.
摘要:
A device including a first portion made of a first material and a second portion made of a second material, the second part extends from one of faces of the first portion and is made of an amorphous material.
摘要:
This method for producing porous sintered aluminum includes: mixing aluminum powder with a sintering aid powder containing titanium to obtain a raw aluminum mixed powder; mixing the raw aluminum mixed powder with a water-soluble resin binder, water, and a plasticizer containing at least one selected from polyhydric alcohols, ethers, and esters to obtain a viscous composition; drying the viscous composition in a state where air bubbles are mixed therein to obtain a formed object prior to sintering; and heating the formed object prior to sintering in a non-oxidizing atmosphere, wherein when a temperature at which the raw aluminum mixed powder starts to melt is expressed as Tm (° C.), a temperature T (° C.) of the heating fulfills Tm−10 (° C.)≦T≦685 (° C.).
摘要:
The invention relates to a blade of a low-pressure compressor of an axial turbine engine. The blade comprises a vane in which a cavity is formed. The vane has a leading edge and a trailing edge, an intrados surface and an extrados surface which extend from the leading edge to the trailing edge, an outer casing which forms the intrados surface and the extrados surface and which delimits the cavity. The blade further comprises closed foam, such as a polymethacrylic foam, which blocks the cavity in order to isolate it from the environment of the blade. The blade further has a three-dimensional lattice which is formed in the cavity and which is integral with the vane of the blade. This barrier protects from chemical attacks and the introduction of impurities. The invention also relates to a production method for a hollow turbine engine blade which is filled with foam.
摘要:
A journal cross of a universal joint includes a base body from which four journals extend outwardly, each journal of the four journals having a cylindrical section and an outer diameter and a length in an axial direction of the journal. The four journals are formed as tubular structures, an inner diameter of each of the tubular structures is at least 67% of the outer diameter of each of the tubular structures, the journal cross is formed as a one-piece component from which the four journals as well as the transitions between the four journals are also formed, and the four journals merge in a common cavity which is formed in an interior of the journal cross.
摘要:
The present invention provides a qualitatively-stable functionally gradient material precursor having gradient material composition, as well as a production method of the functionally gradient material precursor, at low cost. Further, the present invention provides a functionally gradient material having gradient material composition, or having both gradient material composition and gradient porosity, so as to achieve high-functionality; as well as a production method of the functionally gradient material. A functionally gradient material precursor is formed by the steps of: forming plural kinds of metal foam precursors, each obtained by performing heat treatment on a metal member so that a plurality of pores are generated within the metal member, by making the material composition of the metal member different; and friction stir welding the plural kinds of metal foam precursors. Further, a functionally gradient material is formed by performing heat treatment on the functionally gradient material.
摘要:
A composite material and method of making the same are disclosed. An example method for fabricating a composite material forms a core layer between opposing outer layers. The core layer includes a mixture of at least one metallic powder and at least one expanding agent. The example method removes moisture and gasses from the core layer by applying a first vacuum pressure to at least the core layer. The example method compresses the core layer to bond the core layer to the outer layers while a second vacuum pressure is applied to at least one of the outer layers. The resulting composite material has a compacted core layer that is substantially free from moisture and imbedded gasses. Additionally, the outer layers are substantially free from perforations enabling the escape of gas and moisture during foaming of the core layer. The composite material may be reshaped to form semi-finished products which, in turn, may be heated to foam the core material to form finished products.
摘要:
The invention relates to a method for the connecting of components, namely for the connecting of at least one pipe-shaped or rod-shaped component with a wall-type component, with the following steps: a) providing a wall-type component (11), whereby the wall-type component (11) comprises a sandwich-type structure of two plate-shaped or pipe-shaped elements (12, 13) with a layer (14) of an expandable foamable metal material positioned therebetween; b) providing at least one pipe-shaped or rod-shaped component (10); c) introducing at least one opening in the wall-type component (11) for the receiving of the or each pipe-shaped or rod-shaped component (10); d) inserting of the or each pipe-shaped or rod-shaped component (10) in a corresponding opening of the wall-type component (11); e) heating of the arrangement of the wall-type component (11) and the or each pipe-shaped or rod-shaped component (10) with foaming-up expansion of the expandable foamable metal material for the connecting of the or each pipe-shaped or rod-shaped component (10) with the wall-type component (11).
摘要:
The invention relates to a gas turbine component, namely static gas turbine component, especially for an aircraft engine. According to the invention, the static gas turbine component is formed at least region-wise of metal foam.
摘要:
An aluminum plate (13) is first plastic-deformed (FIG. 3D) in such a way as to envelop a foaming-agent compact (14), which is not foamed yet. Then, terminals of the aluminum plate (13) are integrally seam-welded (FIG. 3E) to thereby obtain a closed section structure (23). Subsequently, the foaming-agent compact (14) contained in the closed section structure (23) is foamed by being heated to foaming temperature thereof. Consequently, a pipe-like frame filled with a foam (27) is obtained.