an extruded metal flow 3D printer comprising a rack including a workbench capable of moving along n X-axis and Y-axis direction, and a head capable of moving along an Z-axis direction; a printing device including a printing head, a highfrequency coil and a high frequency electric induction heating device; the printing heal including a tungsten steel nozzle, a ceramic tube bank, a high temperature resistant ceramic protective sleeve, and a stainless steel end cover; the tungsten steel nozzle having an extrusion hole; a feeding device; the head comprising at least one laser mounted on a lower end face thereof and configured to locally preheat and melt a metal layer printed from the metal wire or enhance a binding force between metal layers, so that the print effect and model molding effect of the present invention can be improved, enhancing the marketability.

an extruded metal flow 3D printer comprising a rack including a workbench capable of moving along n X-axis and Y-axis direction, and a head capable of moving along an Z-axis direction; a printing device including a printing head, a highfrequency coil and a high frequency electric induction heating device; the printing heal including a tungsten steel nozzle, a ceramic tube bank, a high temperature resistant ceramic protective sleeve, and a stainless steel end cover; the tungsten steel nozzle having an extrusion hole; a feeding device; the head comprising at least one laser mounted on a lower end face thereof and configured to locally preheat and melt a metal layer printed from the metal wire or enhance a binding force between metal layers, so that the print effect and model molding effect of the present invention can be improved, enhancing the marketability.

An additive manufacturing method for making an additive object, which includes the steps of : introducing a mechanical wave to vibrate a holding platform; melting a raw material powder into a melted raw material; and depositing the melted raw material in multiple layers on the holding platform, vibrated by the mechanical wave to form the additive object.

An additive manufacturing method for making an additive object, which includes the steps of : introducing a mechanical wave to vibrate a holding platform; melting a raw material powder into a melted raw material; and depositing the melted raw material in multiple layers on the holding platform, vibrated by the mechanical wave to form the additive object.

The invention relates to an alloy produced by powder metallurgy and having a non-amorphous matrix, the alloy consists of in weight % (wt. %): C 0-2.5 Si 0-2.5 Mn 0-15 Cr 0-25 Mo 4-35 B 0.2-2.8 optional elements, balance Fe and/or Ni apart from impurities, wherein the alloy comprises 3-35 volume % hard phase particles, the hard phase particles comprises at least one of borides, nitrides, carbides and/or combinations thereof, at least 90% of the hard phase particles have a size of less than 5 μm and at least 50% of the hard phase particles have a size in the range of 0.3-3 μm.

The invention relates to an alloy produced by powder metallurgy and having a non-amorphous matrix, the alloy consists of in weight % (wt. %): C 0-2.5 Si 0-2.5 Mn 0-15 Cr 0-25 Mo 4-35 B 0.2-2.8 optional elements, balance Fe and/or Ni apart from impurities, wherein the alloy comprises 3-35 volume % hard phase particles, the hard phase particles comprises at least one of borides, nitrides, carbides and/or combinations thereof, at least 90% of the hard phase particles have a size of less than 5 μm and at least 50% of the hard phase particles have a size in the range of 0.3-3 μm.

A method and an apparatus for additive casting of parts is disclosed. The method may include: depositing, on a build table, a first portion of a mold, such that, the depositing may be performed layer by layer; pouring liquid substance into the first portion of the mold to form a first casted layer; solidifying at least a portion of the first casted layer; depositing a second portion of the mold, on top of the first portion of the mold; pouring the liquid substance into the second portion of the mold to form a second casted layer, on top of at least a portion of the first casted layer; and solidifying at least a portion of the second casted layer. The method may further include joining the first and second casted layers prior to the pouring of a third casted layer.

An additive manufacturing technique may include forming, on a surface of a substrate, a layer of material using an additive manufacturing technique. The material may include a sacrificial binder and a powder comprising an oxide-dispersion strengthened alloy dispersed in the binder. The technique may include forming, on the layer of material, at least one additional layer of material to form an additively manufactured component. The binder may be selectively sacrificed to leave the powder, for example, to form a component including an alloy.

The invention relates to an apparatus for the additive manufacture of a three-dimensional workpiece from a metal melt (1) containing aluminum, in particular an aluminum melt, comprising a compression chamber (2) which receives the metal melt (1) and is delimited by a piston (3) that is movable back and forth and by a nozzle body (4) having a nozzle bore (5) for discharging the metal melt (1) in drop form, wherein the nozzle body (4) has a metallophobic, in particular aluphobic structure (18), at least in the region (8) of a surface (7) adjoining the nozzle bore (5), which surface is arranged on the side facing away from the compression chamber (2),

The invention relates to an apparatus for the additive manufacture of a three-dimensional workpiece from a metal melt (1) containing aluminum, in particular an aluminum melt, comprising a compression chamber (2) which receives the metal melt (1) and is delimited by a piston (3) that is movable back and forth and by a nozzle body (4) having a nozzle bore (5) for discharging the metal melt (1) in drop form, wherein the nozzle body (4) has a metallophobic, in particular aluphobic structure (18), at least in the region (8) of a surface (7) adjoining the nozzle bore (5), which surface is arranged on the side facing away from the compression chamber (2),