205results about "Additive manufacturing" patented technology

A method of manufacturing a medical device made of polylactic acid (PLA) and hydroxyapatite (HA) aimed at the repair of fractures or considerable bone injuries, using 3D printing and electrospinning techniques.

To perform an alloy composition search that enables automatic, high-speed evaluation between evaluation devices for a plurality of evaluation items, this automatic evaluation device (1000) is provided with: a nanoindentation testing machine (50) which measures a mechanical characteristic according to the shape of an indenter mark; a mechanical characteristic distribution memory unit (120) which stores a distribution condition of the mechanical characteristic; a measurement instrument cooperation controller (110) which controls measurement work by measurement instruments upon a sample to be measured; a measurement data storage unit (130) which stores measurement data from the measurement instruments; and a post processing unit (200) which calculates physical property data corresponding to the measurement data.

A vacuum induction melting (VIM) furnace and method of using. A VIM is configured for use with metal-containing carbon powders. In operation, the metal-containing carbon powders are formed into a pellet so as to minimize or eliminate ejection of material during introduction of the pellet into the VIM processor. The VIM processor may be substituted or used in combination with a vacuum arc melt processing apparatus, an electron beam melt furnace, an ion plating furnace, a plasma flame source, a smelter, a traditional metal-metal melt furnace, or any equivalent. Pelletizing can be accomplished through use of a press or through application of any pelletizing technique and / or use of any apparatus that is able to generate pellets that have sufficient mass to avoid ejection from a VIM processor.

Provided is a cemented carbide composition having a hard phase made of tungsten carbide (WC) as a first hard phase component and at least one second hard phase component selected from the group consisting of tantalum carbide (TaC), niobium carbide (NbC), and mixtures thereof, and a binder phase made of at least one binder component selected from the group consisting of cobalt (Co), nickel (Ni), and mixtures thereof. Also provided is a cemented carbide composition having a hard phase made of WC as a hard phase, NbC as an anti-galling phase, and TaC as a toughness improver, and a binder phase made of at least one binder component selected from the group consisting of Co, Ni, and mixtures thereof. Associated methods of producing the cemented carbide compositions and tools incorporating the same are additionally contemplated.

Inventive techniques for forming unique compositions of matter are disclosed, as well as associated physical characteristics and properties of the materials. In particular, particles comprising a metal lattice are characterized by having carbon (preferably graphene) disposed within the crystalline lattice structure thereof. The carbon is at least partially disposed in interstitial sites of the metal lattice, and may be present in amounts ranging from about 15 wt % to about 90 wt % of the total particle mass, with about 15 wt % to about 60 wt % being disposed in the interstitial sites, e.g., between basal planes, of the metal lattice. The carbon, moreover, is substantially homogeneously dispersed throughout the resultant material, conveying unique and advantageous properties such as strength-to-weight ratio, density, mechanical toughness, sheer strength, flex strength, hardness, anti-corrosiveness, electrical and / or thermal conductivity, etc. as described herein. In some approaches, the graphene is pristine, and has corresponding physical characteristics as described herein.

Increase the surface grinding speed by cavitation processing method. [Solution] The cavitation surface treatment method involves mixing an abrasive 7 into a treatment liquid 5, immersing a workpiece 3 and a horizontal projection nozzle 12 in the treatment liquid 5, and while rotating around a jet axis 1, spraying a cavitation jet 32 ​​spreading on a plane toward the surface of the workpiece 3, smoothing the surface of the workpiece 3 and imparting compressive residual stress to the surface of the workpiece 3.

The invention discloses a method for preparing a high-strength and high-conductivity electrical round aluminum rod through a powder metallurgy technology. The method comprises the steps of raw material preparation, powder preparation, powder shaping, sintering densification and heat treatment. The aluminum alloy powder is prepared from high-purity raw materials through an inert gas atomization method, the content of impurity elements is effectively reduced, the powder purity is improved, and a foundation is laid for obtaining high-conductivity products; the laser melting technology and the sintering mold are adopted for forming, rapid melting and accurate forming of aluminum alloy powder are achieved, and the defects of stress concentration, cracks and the like generated in the traditional pressing forming process are overcome; through optimization of sintering process parameters, complete densification of the aluminum alloy is realized, and in combination with a subsequent heat treatment process, crystal grains are refined, and the strength and the electric conductivity of a product are improved.

The invention discloses an alloy aluminum bar containing rare elements and a preparation technology of the alloy aluminum bar. The alloy aluminum bar comprises, by mass, 1.5%-3.3% of Mg, 0.7%-1.1% of Si, 1.0%-1.7% of Cu, 0.15%-0.3% of Y, 0.07%-0.1% of Er, 0.05%-0.11% of Gd, 0.07%-0.24% of La, 0.08%-0.15% of Zr, 0.07%-0.12% of Ti, 0.05%-0.1% of Sc, smaller than or equal to 0.1% of Fe, 0.35%-0.7% of Mn, 0.2%-0.6% of Ni, smaller than or equal to 0.5% of total impurities and the balance aluminum. The preparation process comprises the following steps: burdening: accurately weighing a high-purity aluminum ingot, Al-Y, Al-Zr, Al-Ti intermediate alloy and pure metal according to the components; smelting: melting at 720-750 DEG C, preserving heat, and protecting by argon; cooling to 740-720 DEG C, and adding an intermediate alloy; a refining agent is added for degassing and deslagging, and slagging-off is conducted after standing is conducted for 30 min; casting: the temperature is 720-740 DEG C, the casting speed is 120-200mm / min, the strength of cooling water is 0.06-0.15 MPa, the water temperature is 10-30 DEG C, and online degassing is performed outside the furnace so that the hydrogen content is less than or equal to 0.15 cm / 100g Al; through scientific proportioning of conventional alloy elements such as Mg, Si, Cu and Mn and various rare elements such as Y, Er, Gd, La, Sc, Zr and Ti, the synergistic strengthening effect of the conventional elements and the rare elements is achieved, and the performance bottleneck of a traditional aluminum alloy is effectively broken through.

Variable pitch fan blade (8a) for an unfaired turbomachine fan, the blade (8a) comprising an aerodynamic blade (9) and a base (10), the blade (9) comprising a recess opening simultaneously onto the upper and lower surfaces (14) and a leading edge (15) of the blade (9), the blade (8a) further comprising a measuring device (26) housed in the recess and clipped onto the blade (9), the measuring device (26) comprising a streamlined body (28) whose outer surface (29) is complementary to the outer surface (30) of the blade (9) to ensure aerodynamic continuity, the body (28) carrying at least one measuring instrument (31) configured to measure at least one parameter of an airflow upstream of the blade (9). Figure for the abstract: 2

The invention belongs to the technical field of metal materials, and discloses precipitation-hardening stainless steel and a preparation method thereof. Through cooperative regulation and control of component design and process innovation, the traditional contradiction of'strength-plasticity inversion 'in additive manufacturing of the precipitation-hardened stainless steel is broken through, and the precipitation-hardened stainless steel with excellent strength and plasticity is prepared. On one hand, the N element is introduced into the precipitation-hardening stainless steel raw material powder, so that transformation from ferrite to austenite in the additive manufacturing process is promoted; on the other hand, in the additive manufacturing process, the substrate is subjected to in-situ heating to be close to the martensite phase transformation initial temperature, and transformation of austenite to martensite is restrained; and after printing is finished, global martensite phase transformation is triggered through natural cooling or air cooling, so that a total martensite structure with fine grains and high dislocation density is obtained. And finally, through aging treatment, precipitation of a nano Cu phase is induced, formation of austenite is reversed, and therefore the strength and plasticity of the precipitation-hardened stainless steel are improved at the same time.

The invention discloses a printing and heat treatment process of a special Ti175 alloy for additive manufacturing, and belongs to the technical field of titanium alloy machining, and the printing and heat treatment process comprises the following steps: S1, carrying out printing forming on Ti175 alloy powder by adopting 3D printing equipment; and S2, the component printed and formed in the step S1 is subjected to heat treatment within the temperature range of 950-1100 DEG C and then cooled to the room temperature. According to the printing and heat treatment process of the special Ti175 alloy for additive manufacturing, the density of the Ti175 alloy is improved through the printing process, the mechanical property of the alloy can be greatly regulated and controlled through the heat treatment process, the plasticity of the Ti175 alloy is optimized, and the room-temperature tensile strength and the elongation at break are improved.

A kind of shoe sole accessory based on air-permeable metal processing and preparation method, shoe sole and shoe, belong to shoe sole accessory technical field, the accessory includes 3D printing integrated air-permeable metal accessory body, it is equipped with air-permeable part including uniform distribution through air-permeable hole and accessory perimeter and fixed position are equipped with opening;Its preparation method includes: 3D printing and sintering are made metal accessory, it is positioned after injection TPU material and is covered fixed as insert;The application also provides the shoe sole and shoe integrated with the accessory, realizes the accessory ultra-thin and high air permeability by 3D printing, solves the contradiction of traditional accessory heavy and insufficient strength, significantly improves the air permeation efficiency of shoe product, wearing comfort and durability.

A method may apply an ink layer in a desired pattern onto a substrate with a substrate coefficient of thermal expansion. A method may heat the ink layer and the substrate at a temperature increase ramp rate to a predefined target temperature for the ink layer, to obtain a metallic layer in substantially the desired pattern and with a metallic coefficient of thermal expansion. A method may cool the metallic layer and the substrate at a temperature decrease ramp rate, wherein a difference between the substrate coefficient of thermal expansion and the metallic coefficient of thermal expansion, in combination with the temperature increase ramp rate and the temperature decrease ramp rate, operates to completely delaminate the metallic layer from the substrate, thereby producing the patterned metallic foil.

The invention relates to a production container (or a transportable structure or housing) comprising - a mechanical reactor (particularly preferably an eccentric vibration mill) and comprising - a raw material inlet and / or a powdered raw material intermediate store and - a powder product intermediate store and / or a product outlet and - a feed-transport section for powder or granulate or chips of aluminum and / or powder or powder-based bulk materials of boron nitride and / or powder-based separating agents from the material inlet and / or the powdered raw material intermediate store to the mill and comprising - a discharge-transport section for aluminium product powder from the mill to the powder product intermediate store and / or to the product outlet.

Provided are an insulator-coated soft magnetic powder capable of producing a powder compact having high density, high insulativity, and high mechanical strength, a powder magnetic core containing the insulator-coated soft magnetic powder, a magnetic element provided with the powder magnetic core, and an electronic device provided with the powder magnetic core. The electronic equipment is provided with the magnetic element. A soft magnetic powder coated with an insulating material, which is provided with a soft magnetic powder and an insulating coating film that covers the particle surface of the soft magnetic powder, and which is characterized in that: the soft magnetic powder has an average particle diameter of 2.0-40.0 [mu] m and a specific surface area of 10-100% of the specific surface area of the soft magnetic powder monomer; when the epoxy resin is mixed in such a manner that the ratio of the epoxy resin is 2.0 mass% and the mixture is molded at a pressure of 294.2 MPa, i.e., 3.0 t / cm2, the compression ring strength of the obtained first molded body is 10 MPa or more.

The purpose of the present invention is to provide a sputtering target having high composition uniformity. This sputtering target is formed from a noble metal alloy. The noble metal alloy is formed from 5 or more species of noble metal elements. In an X-ray diffraction spectrum, the number of peaks observed within a range of the diffraction angle 2θ between 38° and 44° is 1.

The application discloses a Co-WC hard alloy with a multilayer gradient structure and a preparation method and application thereof, the multilayer gradient structure is an N-layer gradient layer structure in which the content of Co increases layer by layer and the content of WC decreases layer by layer from a top layer to a bottom layer, wherein N is greater than 4; each layer in the gradient layer structure is composed of WC and Co; and the volume fraction of WC is greater than that of Co in the top layer. The hard alloy prepared by adopting the process combining 3D printing and powder metallurgy has high hardness, high wear resistance, high toughness and high impact resistance, the gradient structure layer designed can be accurately printed out through the 3D printing process, the thickness of each layer and the powder uniformity are ensured, the performance of the gradient structure hard alloy is optimized, and the production cost of the product is reduced.

To reduce acidic exhaust gas generated upon degreasing a resin structure molded using a mixed material containing a polyacetal resin and metal powder.SOLUTION: Degreasing is executed in the presence of formic acid produced from a resin structure without the intervention of additional acid to obtain a degreased structure.SELECTED DRAWING: Figure 1

To provide a copper alloy molding having excellent electrical conductivity.SOLUTION: A copper alloy molding comprises, in mass%, C: 0.01-3.00% and, as an optional additional component, an element M: 0.0-5.0% or less (where the element M is one or more selected from Zr, Hf, Ti, Nb, V, Mo, Mn, Cr, W, and Al) with the balance being Cu and inevitable impurities.SELECTED DRAWING: None

The present application belongs to the technical field of metal materials, and discloses a precipitation hardening stainless steel and a preparation method thereof. Through synergistic regulation of component design and process innovation, the present application breaks through the traditional contradiction of "strength-plasticity inversion" in additive manufacturing of precipitation hardening stainless steel, and prepares a precipitation hardening stainless steel with excellent strength and plasticity. On the one hand, by introducing N element in the raw material powder of the precipitation hardening stainless steel, the transformation of ferrite to austenite in the additive manufacturing process is promoted; on the other hand, the substrate is heated in situ to the vicinity of the martensite transformation starting temperature in the additive manufacturing process, and the transformation of austenite to martensite is inhibited; and after the printing is completed, global martensite transformation is triggered by natural cooling or air cooling, so that the full martensite structure with fine grains and high dislocation density is obtained. Finally, through aging treatment, the precipitation of nano Cu phase is induced, and the formation of austenite is reversed, so that the strength and plasticity of the precipitation hardening stainless steel are simultaneously improved.

The present invention discloses a high-strength and tough aviation thin plate imitating an armadillo with a shell and a preparation method thereof, relating to the fields of aviation materials and laser additive manufacturing technology. The high-strength and tough aviation thin plate of the present invention includes a plurality of connection layers arranged in parallel, and a sparse grid layer and a dense grid layer located between adjacent connection layers. The sparse grid layer and the dense grid layer include closely arranged hollow block units, and the connection layer, the sparse grid layer and the dense grid layer form a closed cavity. The preparation method of the present invention uses laser melting deposition additive manufacturing technology to form the connection layer, the sparse grid layer and the dense grid layer, and selective laser melting additive manufacturing technology to form the sparse hollow blocks and the dense hollow blocks. The high-strength and tough thin plate of the present invention can be used for load-bearing structural parts and heat dissipation structural parts in fields such as aerospace.

Mold for injecting natural fibers in aqueous suspension, the mold defining an external surface (Se) and an internal cavity (C) having an internal surface (C1), the mold comprising at least three distinct zones (Zs, Zf, Zd) of different porosities, namely: a) a support zone (Zs) of low porosity forming the external surface (Se) and a part of the internal surface (C1), this support zone (Zs) defining a fiber inlet (E) and a water outlet (S) connected to the internal cavity (C), b) at least one filtration zone (Zf) of medium porosity forming another part of the internal surface (C1), allowing the evacuation of water but retaining the natural fibers, and c) at least one drainage zone (Zd) of high porosity in contact with the filtration zone (Zf) and support zone (Zs), but away from the internal cavity (C1). "Figure for abstract: figure 3"

The purpose of the present invention is to provide a sputtering target material having high component uniformity. A sputtering target composed of a noble metal alloy, in which the noble metal alloy is composed of five or more noble metal elements, and the number of peaks observed at a diffraction angle 2 [theta] in the range of 38-44 DEG in an X-ray diffraction pattern is 1.

The invention relates to an additive manufacturing technology of a refractory metal material, and provides an induction heating degreasing method for 3D pure tungsten printing, which comprises the following steps of: preparing a binder system by taking polystyrene and polyformaldehyde as main binders, polymethyl methacrylate as a secondary binder and stearic acid as a surfactant; a pure tungsten precursor is obtained through a powder extrusion printing technology, and a high-density blocky tungsten sample is prepared through a high-temperature sintering technology after induction heating degreasing. According to the method, the high-performance, high-density and high-uniformity tungsten material can be prepared through the method that the pure tungsten precursor is prepared through the binder capable of being rapidly thermally decomposed and then induction heating degreasing is conducted, the efficiency of traditional thermal degreasing is greatly improved, and it is ensured that the material stably works in the high-temperature and high-radiation environment; the material is suitable for the fields of aerospace, nuclear industry and high-temperature application.

A medical device is at least partially formed from a metal alloy comprising at least 15 atomic weight percent rhenium, and a medical device is partially or entirely formed from such a metal alloy.

The present invention relates to a method for making a multi-layer porous transport layer, the method comprising the steps of: (a) providing a first feedstock comprising first metal particles and a first polymer binder, and providing a second feedstock comprising a second metal particles and a second polymer binder, The first and second feedstocks have a metal powder content of 40 to 70 volume percent; and The first feedstock is compared to the second feedstock. (i) metal particles with a smaller average particle size; (ii) A higher metal powder content; or (iii) Both smaller average particle size metal particles and higher metal powder content The process comprising: (b) co-extruding the first and second feedstocks to form a film-shaped green body comprising a first layer and a second layer, the second layer being physically connected to the first layer at a temperature above the melting temperature and / or glass transition temperature of the first and second polymeric binders; (c) optionally smoothing the film-shaped green body by rolling or calendaring; (d) debinding the film-shaped green body to form a brown body; (e) Brownian body in a non-oxidizing atmosphere or 10 -4 sintering under a vacuum of less than mbar and at a temperature of 700-1100°C to form a porous transport layer; Including, The first feedstock and the second feedstock do not contain any solvent.

The present invention provides a novel method for producing a structure comprising an assembly of metal-based particles. Provided is a method for producing a layered product, the layered product comprising a substrate having a three-dimensional surface; and a metal-based particle assembly layer arranged on the three-dimensional surface and comprising a plurality of metal-based particles arranged apart from each other, the method comprising the step of forming the metal-based particle assembly layer on the three-dimensional surface by immersing the substrate in a plating solution containing a cation of a metal constituting the metal-based particles to reduce the cation, wherein a VS / VL ratio of volume VS [cm3] of the substrate to volume VL [cm3] of the plating solution is 0.03 or less.

The invention relates to the technical field of additive manufacturing and structural design, and discloses an aviation structural part structural optimization and rapid preparation method which comprises the steps that an optimization space is defined, a design space and a non-design space are defined for a to-be-optimized target structural part, and optimization analysis is conducted on the part of the design space; force and displacement are applied, displacement constraint and test load are applied to the target structural member, and the maximum rigidity of the target structural member is obtained through testing; optimization analysis: based on the maximum rigidity of the target structural member as an optimization target, carrying out optimization analysis on the target structural member to obtain an optimized structural member; result contrastive analysis: performing strength contrastive analysis on the target structural member and the optimized structural member, and judging whether the strength of the optimized structural member meets a preset requirement or not; exporting a digital model, and exporting an optimization model of which the strength of the optimized structural member meets a preset requirement; and additive preparation is conducted, and the optimized structural part is prepared based on the exported optimization model. And innovative design and low-cost rapid preparation of typical aviation parts can be realized.

The present invention relates to a method for manufacturing a labyrinth seal using wire arc additive manufacturing, which is mounted between a diaphragm of a turbine and a turbine rotor to induce a smooth rotation of the turbine rotor and preventing gas leakage by minimizing friction between the diaphragm of a turbine and a turbine rotor when a rotating body such as the turbine rotor rotates inside a fixed body such as the diaphragm, and which includes a ring-shaped body part and a tooth part protruding on one side of the ring-shaped body part, wherein the labyrinth seal is deposition-manufactured by 3D printing, the body part is manufactured by the wire arc additive manufacturing, and the tooth part is manufactured by a directed energy deposition.