This invention relates to a method for manufacturing a part of complex shape (3) by successive deposition of layers according to a technique of 3D additive printing and pressure sintering, comprising the following steps: an initial step of producing a model (1) from a material chosen from a porous or pulverulent material based on a metal alloy, a ceramic, a composite material and a lost material by formation of successive layers deposited according to the digitally controlled 3D additive printing technique, followed by a step of introducing a preform (1) made of porous or pulverulent material to be densified, derived from the model (1), into a mold (2) filled with a sacrificial porous or pulverulent material (13) in addition to the preform (1), the uniaxial densifying pressure sintering (10) then being applied to the mold (2) in order to form the part (3) which is finally extracted from the mold (2).

A composite component may include a substrate including a first material and defining a surface; and at least one feature attached to the surface of the substrate. The at least one feature may include a second, different material attached to the surface using cold spraying. Cold spraying may include accelerating particles of the second material toward the surface without melting the particles.

A composite component may include a substrate including a first material and defining a surface; and at least one feature attached to the surface of the substrate. The at least one feature may include a second, different material attached to the surface using cold spraying. Cold spraying may include accelerating particles of the second material toward the surface without melting the particles.

A method for manufacturing a cutting tool (10) with lubrication orifices of complex shapes, including the steps of: producing a polymer insert (20), overmoulding a body of the cutting tool (10) with the polymer insert (20) by injecting into a mould, removing the polymer insert (20), so as to form in the body of the cutting tool (10) lubrication orifices, the shape whereof is complementary with that of a part of the insert (20), machining the body of the cutting tool (10) on an active part thereof, and depositing an abrasive coating on a surface of the active part of the body of the cutting tool (10).

A method for manufacturing a cutting tool (10) with lubrication orifices of complex shapes, including the steps of: producing a polymer insert (20), overmoulding a body of the cutting tool (10) with the polymer insert (20) by injecting into a mould, removing the polymer insert (20), so as to form in the body of the cutting tool (10) lubrication orifices, the shape whereof is complementary with that of a part of the insert (20), machining the body of the cutting tool (10) on an active part thereof, and depositing an abrasive coating on a surface of the active part of the body of the cutting tool (10).

In one aspect, methods of making freestanding metal matrix composite articles and alloy articles are described. A method of making a freestanding composite article described herein comprises disposing over a surface of the temporary substrate a layered assembly comprising a layer of infiltration metal or alloy and a hard particle layer formed of a flexible sheet comprising organic binder and the hard particles. The layered assembly is heated to infiltrate the hard particle layer with metal or alloy providing a metal matrix composite, and the metal matrix composite is separated from the temporary substrate. Further, a method of making a freestanding alloy article described herein comprises disposing over the surface of a temporary substrate a flexible sheet comprising organic binder and powder alloy and heating the sheet to provide a sintered alloy article. The sintered alloy article is then separated from the temporary substrate.

A tool includes a head that extends form the flexible section, an emitter within the head; and a nozzle to eject a cooling fluid therefrom. A method of additively manufacturing a component including delivering series of thermal shocks to a conglomerated powder within an internal passage of an additively manufactured component to facilitate removal of the conglomerated powder.

A method for forming a part. The method includes: forming a first portion of the part at a first level; forming a second portion of the part at a second level; wherein forming the first and second portions includes exposing the first and second levels to a sintering process and portions of the first and second levels to an electron beam; forming a wire in the passage formed inside the first and second portions by exposing a portion of the passage to the electron beam; applying a signal to the wire to break up sintered material in the passage; and removing the wire.

A method of additive manufacture involves building a container 8 and a structure by fusing powder 12, 13, 14, such that the container contains the structure and unfused powder. The container 8 may be used in a method for predicting powder degradation in an additive manufacturing process. Containers containing different types of structure may be built to measure the effect of building different types of structures on powder degradation. A structure to be built may be characterised by classes of structural features it contains and information obtained used from building containers used to predict how building the structure will degrade powder.

A method of additive manufacture involves building a container 8 and a structure by fusing powder 12, 13, 14, such that the container contains the structure and unfused powder. The container 8 may be used in a method for predicting powder degradation in an additive manufacturing process. Containers containing different types of structure may be built to measure the effect of building different types of structures on powder degradation. A structure to be built may be characterised by classes of structural features it contains and information obtained used from building containers used to predict how building the structure will degrade powder.