摘要:
To build a part with a deposition-based additive manufacturing system using a polymer-based binder of a composite feedstock, a first tool path of a perimeter contour segment and a second tool path that is parallel and adjacent are deposited in retrograde directions to produce stress-offsetting adjacent paths, where directions of residual stress within the polymer-based binder of the composite are opposite in the stress-offsetting adjacent path.
摘要:
The invention relates to a valve guide manufactured by a powder-metallurgical process for combustion engines, said guide comprising a central section, a cam-side end piece, and a duct-side end piece, wherein the central section consists of a first material and the duct-side end piece of a second material, with the second material having a hardness in excess of 70 HRB and the first material having a hardness that is by at least 10 HRB lower than that of the second material.
摘要:
A method of removing partially sintered powder from an internal passage in a metal component formed by electron beam additive manufacturing (EBAM) includes co-forming a solid wire cutter in the passage during the EBAM forming process and removing partially sintered powder from the cavity by extracting the cutter from the cavity.
摘要:
A method of forming a component having an internal passage defined therein is provided. The method includes positioning a jacketed core with respect to a mold. The jacketed core includes a hollow structure formed at least partially by an additive manufacturing process, and an inner core disposed within the hollow structure. The method also includes introducing a component material in a molten state into a cavity of the mold, and cooling the component material in the cavity to form the component. The inner core is positioned to define the internal passage within the component.
摘要:
A turbine shroud segment is metal injection molded (MIM) about a low melting point material insert. The low melting point material is dissolved using heat during the heat treatment cycle required for the MIM material, thereby leaving internal cooling passages in the MIM shroud segment without extra manufacturing operation.
摘要:
A mold capable of imparting an appropriate amount of heat depending on a part of an object to be heated, the mold for transferring heat to the object to be heated is provided with a hollow portion inside the mold, and a heat amount adjusting agent, which is accommodated in the hollow portion, for changing heat transfer property of the hollow portion, in which the heat amount adjusting agent is made of a powdery or granular material having a material property different from a material property of the mold.
摘要:
The present invention relates to a method for producing a leadthrough for an optical conductor (V3) in a housing part, comprising the following steps: a) producing granules composed of metal powder and, if appropriate binder, b) providing a mold having a mold space, c) injecting or compressing the granules into the mold in order to produce a molding, d) sintering the molding, e) introducing a passage opening into the molding prior to sintering, f) inserting a tube (V2) into the passage opening prior to sintering, and g) leading the optical conductor through the tube after sintering.
摘要:
A method for modifying a ceramic matrix component is disclosed including identifying a non-conforming region of a composite component capable of operating in a gas turbine engine; removing at least a portion of the non-conforming region to create an exposed surface of the composite component; preparing a preform in response to the removing at least a portion of the non-conforming region; applying a reactive constituent surface region to at least one of the exposed surface of the composite component and the preform, the reactive constituent surface region being capable of producing a non-equilibrium condition; positioning the preform to provide a contact region between the exposed surface of the composite component and the preform proximate the reactive constituent surface region; and reacting the reactive constituent surface region in an equilibrium reaction at the contact region to form a bond structure between the exposed surface of the composite component and the preform.
摘要:
A method for making a gas turbine engine matrix composite structure. The method includes providing at least one metal core element, fabricating a matrix composite component about the metal core element, and removing at least part of the metal core element from the matrix composite component by introduction of a halogen gas.
摘要:
A method of making a hollow metal component comprising the steps of providing at least one core comprising a first side and a reverse side; utilizing a first metal spray process to apply at least one metal or metal alloy to the first side of the core, resulting in a partially-formed structure comprising a first side and a reverse side; and utilizing a second metal spray process to apply at least one metal or metal alloy to the reverse sides of the partially-formed structure and the core, resulting in a rough structure. A hollow metal component comprising a first side having interior and exterior surfaces, a reverse side having interior and exterior surfaces, the interior surfaces of the first side and the reverse side defining at least one cavity. The component is integrally formed and has regions comprising relatively different material compositions, the regions having gradual transitions of materials therebetween.