83 results about "Near net shape" patented technology

A method of additive manufacturing a part having integrated passages is provided. In one aspect, the method includes forming a part having a near net shape by moving a friction stir tool to deposit a filler material in a predetermined formation. The tool can include a rotating spindle having a channel configured to hold the filler material. The method can include machining the near net shape part to form a plurality of grooves extending into a surface of the part, the plurality of grooves sized and shaped to each receive a tube. The method can include placing a tube into each of the plurality of grooves and moving the tool across the surface of the part and depositing additional material configured to secure the tubes within the plurality of grooves. The method can include machining the additional material deposited over the tubes to a predetermined shape.

A method of additive manufacturing a structure having integrated passages is provided. In one aspect, the method includes forming first and second parts, each part having a near net shape. The first and second parts are formed by moving a friction stir tool configured to deposit a filler material. An inner surface of each part can be machined to form a generally smooth surface. The first and the second parts are joined to form a structure. The structure is machined to form a generally smooth outer surface. The method includes machining a plurality of grooves extending into the generally smooth outer surface of the structure. A tube is placed into each of the plurality of grooves and a layer of material is deposited to secure the tubes within the plurality of grooves. The method can include machining the outer surface to a predetermined shape.

A method of additive manufacturing a structure having integrated passages is provided. In one aspect, the method includes forming first and second parts, each part having a near net shape. The first and second parts are formed by moving a friction stir tool configured to deposit a filler material. An inner surface of each part can be machined to form a generally smooth surface. The first and the second parts are joined to form a structure. The structure is machined to form a generally smooth outer surface. The method includes machining a plurality of grooves extending into the generally smooth outer surface of the structure. A tube is placed into each of the plurality of grooves and a layer of material is deposited to secure the tubes within the plurality of grooves. The method can include machining the outer surface to a predetermined shape.

A method of additive manufacturing a part having integrated passages is provided. In one aspect, the method includes forming a part having a near net shape by moving a friction stir tool to deposit a filler material in a predetermined formation. The tool can include a rotating spindle having a channel configured to hold the filler material. The method can include machining the near net shape part to form a plurality of grooves extending into a surface of the part, the plurality of grooves sized and shaped to each receive a tube. The method can include placing a tube into each of the plurality of grooves and moving the tool across the surface of the part and depositing additional material configured to secure the tubes within the plurality of grooves. The method can include machining the additional material deposited over the tubes to a predetermined shape.

A method of additive manufacturing a structure having integrated passages is provided. In one aspect, the method includes forming first and second parts, each part having a near net shape. The first and second parts are formed by moving a friction stir tool configured to deposit a filler material. An inner surface of each part can be machined to form a generally smooth surface. The first and the second parts are joined to form a structure. The structure is machined to form a generally smooth outer surface. The method includes machining a plurality of grooves extending into the generally smooth outer surface of the structure. A tube is placed into each of the plurality of grooves and a layer of material is deposited to secure the tubes within the plurality of grooves. The method can include machining the outer surface to a predetermined shape.

A method of additive manufacturing a structure having integrated passages is provided. In one aspect, the method includes forming first and second parts, each part having a near net shape. The first and second parts are formed by moving a friction stir tool configured to deposit a filler material. An inner surface of each part can be machined to form a generally smooth surface. The first and the second parts are joined to form a structure. The structure is machined to form a generally smooth outer surface. The method includes machining a plurality of grooves extending into the generally smooth outer surface of the structure. A tube is placed into each of the plurality of grooves and a layer of material is deposited to secure the tubes within the plurality of grooves. The method can include machining the outer surface to a predetermined shape.

The present invention provides a rheological die casting preparation method for an aluminum electrolytic metal ceramic anode, comprising: mixing metal ceramic powder and an organic binder to obtain a material agglomerate, molding the material agglomerate to obtain an anode shell material, fixing a T-shaped electric connection guide rod containing a soldering lug to the center of a mold, preheating the mold, and preheating the anode shell material, then injecting the anode shell material into a cavity of the mold via a flow channel, cooling and demolding the mold to obtain a metal ceramic anode blank containing the T-shaped electric connection guide rod, degreasing and sintering the metal ceramic anode blank containing the electric connection guide rod to obtain the aluminum electrolytic metal ceramic anode. According to the present invention, integrated near net shape forming of the special-shaped metal ceramic anode shell and the electric connection guide rod is realized by means of the rheological die casting preparation method, and the bottom of the T-shaped guide rod is tightly connected to the inner wall of the metal ceramic, solving the problems that aluminum electrolytic metal ceramic of a complex structure is difficult to form, and the electric connection guide rod is prone to falling off.

The invention discloses a near-net-shape preparation method and application of a high-silicon steel thin strip containing trace phosphorus. The preparation method specifically comprises the following steps: smelting chemical components of the trace phosphorus-containing non-oriented high-silicon steel thin strip, preparing the non-oriented high-silicon steel thin strip with the thickness of 0.03-0.15 mm through a planar flow casting near net shape process, and directly annealing the thin strip in an H2 / N2 mixed atmosphere to obtain a finished product of the high-silicon steel thin strip. The characteristics of reducing the viscosity of the high silicon steel and increasing the liquidity of the molten steel of the trace phosphorus element are fully utilized, the wettability between the molten steel and the plane flow casting cooling roller is improved, the surface quality and the yield of the high silicon steel thin strip are improved, the finished high silicon steel thin strip can be obtained by directly annealing the thin strip, and the manufacturing process is further shortened. The method has the advantages that the technological process is short, the manufacturing method is simple, energy conservation and consumption reduction are obvious, the national double-carbon strategy is met, and the prepared non-oriented high-silicon steel thin strip containing the trace phosphorus is small in thickness and excellent in magnetic performance.

A system and method of making an additively manufactured, metal near net shape part includes introducing a metallic-element-bearing feedstock into a melt zone of an additive manufacturing printhead. The metallic-element-bearing feedstock is mixed in the melt zone with a flux composition to form a slag bath mixture upon melting. The metallic-element-bearing feedstock is refined in-situ by melting the slag bath mixture with the application of thermal energy to the slag bath mixture to form a phase-separated product including a slag phase and a metal-rich liquid phase. The metal-rich liquid phase is simultaneously deposited to form a first metal layer that is one of a plurality of iteratively deposited metal layers of an additive build according to a three-dimensional digital model. The additive build has successive layers of the deposited, solidified metal-rich liquid that form a near net shape metallic part.

Disclosed herein are, among other things, wind blade shell tools, segments of wind blade shell tools, and methods of manufacturing such tools and tool segments. In some embodiments, a tool or tool segment for manufacturing a molded part includes a tooling surface and a rigid frame. The frame may include a rigid frame surface having a near net shape for the tooling surface for the molded part. The tooling surface may be disposed within 120 mm of the frame surface. The frame surface may be disposed sufficiently close to the tooling surface to provide dimensional stability to the tooling surface. The tooling surface can be formed by, for example, 3D printing. The tool may include an insulating layer, a heating layer, a print-surface layer, or a combination thereof.

The utility model discloses an extra thick quenched and tempered pipe cold drawing device for a near net shape drill collar pipe, and relates to the field of steel pipe processing, the extra thick quenched and tempered pipe cold drawing device comprises a bearing table, the top surface of the bearing table is fixedly connected with a group of positioning plates, the two positioning plates are internally provided with through grooves, and the through grooves are internally connected with elastic supporting devices in a sliding manner; one end of one elastic supporting device is fixedly connected with a fixing block, the two side faces of the fixing block are both fixedly connected with first fan-shaped friction plates, and one end of the other elastic supporting device is fixedly connected with a second fan-shaped friction plate. According to the utility model, the two first fan-shaped friction plates and the second friction plate are arranged, so that the surface of the steel pipe can be cleaned when the steel pipe is subjected to cold drawing, impurities on the surface are prevented from entering a mold when the steel pipe passes through the mold, the impurities are prevented from rubbing the surface of the steel pipe subjected to subsequent cold drawing, and the service life of the steel pipe is prolonged. And therefore, pit points and scratches are prevented from being generated on the surface of the cold-drawn steel pipe.

The utility model relates to the technical field of punch forming, in particular to a silicon carbide ceramic special-shaped part near-net forming device which comprises a seat body, conveying structures are arranged at the left end and the right end of one side of the seat body, a raw material storage structure capable of transversely moving is connected between the two conveying structures, and a forming lower die is arranged below the other side of the seat body. And a supporting frame is fixedly installed over the forming lower mold and fixedly installed at the top of the base body, a driving air cylinder is installed at the top of the supporting frame, and the output end of the bottom of the driving air cylinder is fixedly connected with an upper mold base. And then the solid raw materials are conveyed to the position beside the forming device through the conveying structure, then the storage rack is lifted to a certain height through the lifting air cylinder, meanwhile, the electric push rod is used for driving the material pushing plate to push the solid raw materials to the slope end, and the solid raw materials are conveyed into a forming lower mold through the slope.

The present application belongs to the field of copper alloy crystallization wheel preparation, and provides a kind of copper alloy crystallization wheel near net shape manufacturing method, comprising: copper alloy crystallization wheel selects chromium zirconium copper material, each metal material of batching is melted, vacuum centrifugal casting is carried out, and the annular casting blank of crystallization wheel is obtained;The first mechanical processing is carried out to the annular casting blank of crystallization wheel, and the shrinkage and riser of inner ring surface are removed;The annular casting blank of crystallization wheel after mechanical processing is sequentially subjected to hot ring rolling, solid solution heat treatment, cold ring rolling, aging heat treatment, secondary machining, and the present application has the advantages of high material yield, high production efficiency, low production cost, good internal and external performance consistency and high product performance.

The invention relates to an aluminum alloy and a production method thereof. Aluminum alloys for near net shape continuous casting of structural components are disclosed. The alloy comprises the following components in percentage by weight: 2-10% of Zn, 0.5-5% of Mg, 0.5-5% of Fe and the balance of Fe. Optionally, Gu, Ti, Sr, Be, Zr, V, Cr, Sc, Na, Si, Mn, Mo, B and Ni; and the balance of aluminum. The alloy may be subjected to a heat treatment selected from the group consisting of solubilization, inoculation, aging, and two or more heat treatment steps.

A method is disclosed herein. The method includes mixing (302) a plurality of metal powders to form a blended powder, pressing (304) the blended powder to form a porous sheet of compacted powder, cutting (306) the porous sheet to form a plurality of cross sections, performing (310) a diffusion bonding process on the plurality of cross sections to bond the plurality of cross sections together forming a near net shape preform, the near net shape preform being denser than the porous sheet, and (312) consolidating the near net shape preform to form a full density near net shape component.

The application discloses a kind of flat type semi-solid continuous thixotropic extrusion sleeve forming methods, belong to metal semi-solid forming technical field.It includes the following steps (1) preheating;(2) initial station blank heating;(3) station movement;(4) die closing;(5) die opening;(6) demolding;(7) station repeats;The application is through the cooperation of upper rectangular plate, lower rectangular plate, male die, female die, translation mechanism, upper driving mechanism and lower driving mechanism, realize the thixotropic forming of the embryo in the multiple die holes on female die, extrusion process is stable controllable, semi-solid billet has no spatter risk;Gas inclusions in forming environment are less, can effectively avoid billet oxidation, finally obtain the sleeve parts of organization compact, excellent mechanical properties, improve sleeve forming efficiency and quality, semi-solid extrusion forming belongs to near net shape process, later cutting processing amount reduces by more than 60%, material utilization rate can reach more than 90%, significantly reduce raw material loss.

The invention discloses a composite preparation process of a high-strength aluminum alloy special-shaped ring forge piece, and belongs to the technical field of metal plastic processing and heat treatment. The technology sequentially comprises the steps of multidirectional isothermal forging cogging, intermediate solution treatment, special-shaped preformed blank near-net forming, pulse current auxiliary special-shaped ring rolling and deformation heat treatment. Intermediate solution treatment is introduced to interrupt tissue inheritance, and a uniform fine-grain matrix is obtained; by means of the electroplastic effect of pulse current, efficient near-net forming of the special-shaped section is achieved at the low temperature, and grains are further refined; and finally, through combination of pre-cooling deformation and aging deformation heat treatment, synergistic improvement of strength and toughness is achieved. According to the method, the technical problems that in the preparation process of the high-strength aluminum alloy special-shaped ring forge piece, the structure is uneven, the performance anisotropy is high, special-shaped forming is difficult, and the material utilization rate is low are effectively solved, and a near-net-shape product with excellent comprehensive performance and high size precision can be stably obtained.

The present invention relates to a novel multi-component aluminum alloy having a proportion of zinc, copper, magnesium and silicon; these alloys have a fine microstructure, which allows for their processability through different manufacturing techniques, including techniques in which rapid solidification of the process exhibits a hot crack problem and processes in which voids are created. The invention also relates to the use of the alloy for manufacturing an article by means of a near-net-size forming manufacturing technique, and to an article comprising said alloy.

The invention discloses a conductor equipment core component cross-scale near-net shape manufacturing method, and relates to the technical field of additive manufacturing, and the conductor equipment core component cross-scale near-net shape manufacturing method comprises the following steps: S1, in a forming process, synchronously executing macro-scale and micro-scale monitoring, and associating two types of data through coordinate calibration to obtain cross-scale associated data; and S2, based on the cross-scale associated data, performing fusion analysis with real-time process and environmental parameters, and outputting a process parameter adjustment direction according to conductor exclusive analysis logic. According to the cross-scale near-net-shape manufacturing method for the core component of the conductor equipment, the overall manufacturing quality and production efficiency of the core component of the conductor equipment can be remarkably improved, the deviation of the size and the organization structure is recognized in real time in the forming process through synchronous monitoring and data fusion of the macroscale and the microscale, and the manufacturing quality of the core component of the conductor equipment is improved. And intelligent analysis is carried out based on the characteristics of the conductor material, and dynamic optimization and closed-loop regulation and control of process parameters are realized.

The present invention provides: a shaping powder, which is suitable for additive processing for making a powder into a near net shape, and with which it is possible to produce a cold die steel where inclusion of coarse carbides is suppressed even if a diffusion annealing treatment that has been required for ingot making is omitted; and a shaped article which uses this shaping powder.　The shaping powder, which includes, in mass%, 0.1% to 1.6% of C, 0.01% to 0.12% of S, 0.1% to 3.0% of Si, 0.1% to 3.0% of Mn, 7.0% to 13.0% of Cr, one or both of W and Mo in the amount (1 / 2 W + Mo) of 0.5% to 1.7%, less than 0.7% (including 0%) of V, less than 0.3% (including 0%) of Nb, 0.3% to 1.5% of Ni, 0.1% to 1.0% of Cu, and 0.1% to 0.5% of Al, with the balance being composed of Fe and unavoidable impurities; and a shaped article which uses this shaping powder, wherein the maximum particle diameter of carbides is less than 1.0 μm in a cross-section that is parallel to a stacking direction.

A dense ceramic body includes a composite microstructure having a first solid phase and a second solid phase. The first solid phase includes cerium oxide with cerium in a Ce(IV) oxidation state, and the second solid phase includes a non-cerium-based oxide. An oxygen ion transport phase is also included, forming a continuous network throughout the body. The composite microstructure is embedded within this continuous network of the oxygen ion transport phase. The first and second solid phases are arranged in a nano-sized, phase-separated morphology.

The invention discloses a laser powder feeding additive manufacturing device and method for an Nb-Si intermetallic compound composite material, and relates to the technical field of high-temperature structural material additive manufacturing. The method solves the problems that according to an existing method for preparing the Nb-Si intermetallic compound composite material through the laser directional energy deposition technology, due to the fact that the local temperature gradient is huge and thermal stress is too high, a formed part is prone to cracking, deformation and composition segregation, and a complete and compact component cannot be obtained. In an inert gas protection environment, dynamic preheating and post-heating heat preservation are carried out on the front area and the rear area of a laser molten pool through combination of overall preheating of a substrate and a local auxiliary heating device synchronously moving with a laser deposition head, and the temperature gradient of a deposition area is strictly controlled to be below a safety threshold value through infrared temperature measurement closed-loop control; and finally, stress release is completed through programmed slow cooling. The method is used for crack-free and high-quality near-net forming manufacturing of Nb-Si-based intermetallic compound composite material components for high-temperature structures in the aerospace field.

The application introduces a large impact runner body forging composite compaction process, according to the runner forging process weight matching steel ingot, the steel ingot is integrally pre-drawing; the blank after pre-drawing is full cross-section upsetting compaction; the upsetting blank is rotated around the center of the cross rotating anvil compaction; the blank is turned over 90°, radial roll forging deformation is carried out; the blank is turned over 90°, the spinning anvil is rotated from the blank circumference to the center direction, and the spinning anvil is rotated from the blank circumference to the center direction; the spinning blank is turned over 90°, and the radial roll forging outer circle is carried out; according to the process requirement, the center groove is forged, and the finished product is finished. The axial and radial deformation is increased for several times, the internal defects are welded, the anisotropy characteristics of the forging are improved, and the comprehensive mechanical properties of the forging are improved; the center groove of the two end faces is forged to realize near net shape forming, the metal streamline integrity and performance consistency are ensured; the whole process reduces the fire times, improves the forging efficiency, and the quality is stable, the impact resistance is strong, and the user requirement index is met.

The invention belongs to the technical field of metal-based composite materials, and relates to a preparation method of zirconium dioxide dispersion strengthened copper alloy, which comprises the following steps of: 1, smelting copper into molten copper; 2, molten copper is poured into a tundish, and nanoscale zirconium dioxide powder is placed in the sealed tundish; 3, atomizing molten copper and nanoscale zirconium dioxide powder, and spraying the atomized molten copper and nanoscale zirconium dioxide powder onto a deposition disc to form a blank; and 4, the blank is subjected to hot extrusion and cold drawing, and a finished product is prepared. According to the preparation method, liquid metal atomization and ZrO2 powder atomization are uniformly combined by adopting a spray forming method, so that a blank with a rapid solidification structure characteristic is prepared; the method has the characteristics of near net shape forming, structure refinement, short technological process, low cost, high deposition efficiency, high alloy component and the like, and solves the technical problems that oxide dispersion distribution is not uniform, dispersed phase grains are large in size and easy to agglomerate, the production process is complex, the production cost is relatively high, large blanks cannot be prepared, and the shapes and sizes of the blanks are limited.

A magnet includes a three-dimensional structure with nanoscale features, where the three-dimensional structure has a near net shape corresponding to a predefined shape.

The invention is directed to a method for reducing or eliminating the danger for gross cracking in a hot work tool for high pressure die casting practically eliminates the danger of crack initiation from the inside of the cooling channel by manufacturing a near net shape (NNS) mould for HPDC, wherein the conformal cooling channels are made of stainless steel tubes having a smooth surface. The hot work tool comprises at least one non-liner and / or one conformal cooling channel. The NNS mould is produced by Hot Isostatic Pressing (HIP).

The present invention discloses a neutron shielding aluminum-based boron carbide composite material and a preparation method thereof; the aluminum-based boron carbide composite material comprises boron carbide particles, graphitized nanocarbon, and an aluminum matrix; the present invention shields neutrons by boron carbide particles, and absorbs or gathers helium bubbles by graphitized nanocarbon, thereby avoiding the generation of a large number of dispersed or gathered helium bubbles in the aluminum matrix after neutron absorption, thereby improving the comprehensive properties of the material such as neutron shielding, radiation damage resistance, and mechanics. The preparation method adopts a powder metallurgy technical process, which is suitable for near-net-shape preparation of aluminum-based composite materials with high volume content of boron carbide particles, and is also suitable for forming and processing large-scale component products such as wide and medium-thick plates of aluminum-based composite materials with medium and low volume content, and can be used in neutron shielding application scenarios such as ground spent fuel storage and transportation, spacecraft and nuclear-powered aircraft.

The application discloses a hot extrusion forming process of DT300 ultra-high strength steel based on DEFORM-3D finite element simulation, which comprises the following steps: firstly, the material properties of the DT300 steel are researched, and a DEFORM-3D material database is established; secondly, a die and a blank geometric model are constructed by UG modeling, and a finite element analysis model is established; thirdly, forming defects are analyzed after simulation post-processing; fourthly, process parameters are optimized based on the simulation results, core parameters are determined, and the process is implemented to punch a near net shape blank; finally, quality detection and adaptation verification are carried out on the sample. The application utilizes finite element simulation to optimize parameters in advance, predict defects, improve material utilization, shorten the process development cycle, reduce manufacturing cost, and control the wall thickness difference of the prepared parts within 2mm, and the material utilization is improved by more than 1 times. The application solves the problems of low material utilization, long development cycle and insufficient research on the adaptation of the hot extrusion process of the traditional processing technology of the DT300 ultra-high strength steel, and is suitable for the manufacturing of key parts of the DT300 ultra-high strength steel in the fields of aerospace and military industry.