The invention discloses a method for realizing the forming of titanium alloy powder by utilizing titanium hydride alloy powder The method comprises the steps of putting hydrogenated titanium alloy powder into a metal sheath, vacuumizing under high temperature after compaction, removing hydrogen content in alloy, carrying out hot isostatic pressing after seal welding, and realizing the forming of the titanium alloy According to the method disclosed by the invention, the hydrogen content in the titanium hydride alloy powder is removed during a vacuumizing link of the metal sheath, the problem of dehydrogenation during a titanium hydride alloy forming process is solved, then the hot isostatic pressing forming is carried out to obtain the titanium alloy with small structure grains, the operation is simple, and the practicability is high

Method for realizing forming of titanium alloy powder by utilizing titanium hydride alloy powder

The invention discloses a method for preparing a titanium product through titanium hydride powder. The method comprises the following steps that firstly, blank manufacturing is carried out, and the titanium hydride powder is manufactured into a blank material through mold pressing; secondly, dehydrogenation is carried out, the blank material is heated under the protective atmosphere, the temperature rise rate is maintained in 50-200 DEG C/min till the temperature of the blank material is increased to 900-1,200 DEG C, and insulating is carried out for 5-20 minutes; thirdly, molding is carried out, the heated blank material is moved in an extrusion device, extrusion is carried out under a certain pressure and extrusion ratio, and the blank material is molded and solidified to obtain the titanium product through an extrusion mold with a specific inner cavity shape; and fourthly, cooling is carried out, and after extrusion is finished, the titanium product is cooled to the room temperature at the speed of 10-100 DEG C/min and then taken out. The method has the beneficial effects that the cost of raw materials is low, the dehydrogenation speed is high, and the production efficiency and product purity are high; and the technological process is simple, and the large-scale production potential is achieved.

Method for preparing titanium product through titanium hydride powder

The invention discloses a binder for titanium alloy powder injection molding and a method for injection molding of titanium alloy parts, belongs to the technical field of titanium alloy part machining and aims at overcoming the defect that existing injection-molded titanium alloy parts easily deform in the degreasing process and air bubbles, trimming and the like exist in the injection and degreasing process. The binder is prepared from a component A and a component B which are independently packaged, wherein the component A is prepared from polypropylene and low-density polyethylene, and the component B is prepared from paraffin wax, stearic acid and naphthalene. The method comprises the steps that 1, Ti6Al4V titanium alloy spherical powder is put in a mixing machine for thermal insulation and preheating, and the component A is added to the mixing machine under the thermal insulation condition at time intervals in a three-batch and equal-amount mode; 2, the temperature is reduced by 50 DEG C and then heat preservation is performed, the component B is added to the mixing machine at time intervals in a three-batch and equal-amount mode, mixing is performed after rotation speed is adjusted, then the temperature is reduced, extrusion and granulation are performed when a toothpaste shape is formed, and then injection molding, degreasing and vacuum sintering are sequentially performed to obtain the titanium alloy parts. The binder and the method are used for the preparation of the titanium alloy parts.

Binder for titanium alloy powder injection molding and method for injection molding of titanium alloy parts

The invention provides a composite wire for manufacturing a titanium product through 3D printing The composite wire comprises a base material, thermoplastic polymers and organic pore forming agents, wherein the thermoplastic polymers and the organic pore forming agents are evenly distributed in the base material In the composite wire, the volume fraction of the base material is 50%-80%, the sum of the volume fraction of the thermoplastic polymers and the volume fraction of the organic pore forming agent is 20%-50%, and the volume ratio of the thermoplastic polymers to the organic pore forming agents is (1-9):1 The base material is titanium or titanium hydride or titanium alloy or titanium hydride alloy The thermoplastic polymers and the organic pore forming agents can be completely removed from the composite wire after the composite wire is heated, the organic pore forming agents can be completely removed at the temperature of 50-200 DEG C, and the thermoplastic polymers can be completely removed at the temperature of 250-500 DEG C The invention further provides a preparation method of the composite wire The composite wire can be formed through printing by means of an ordinary plastic-grade 3D printer, and the formed titanium product can be obtained through the steps of removal of the organic pore forming agents, removal of the thermoplastic polymers, dehydrogenation, sintering and the like

Composite wire for manufacturing titanium product through 3D printing and preparation method of composite wire

The invention provides a binder for powder injection molding, belonging to the technical field of powder metallurgy. The binder comprises the following raw materials in parts by weight: 15-50 parts of pure natural wax, 50-70 parts of naphthalene, 3-12 parts of surfactants and 0.1-0.3 part of compatilizer. The binder has the advantages that the binder for powder injection molding is formed by the pure natural wax, naphthalene, the surfactants and the compatilizer, so that the raw materials used in the formula have few varieties, are simple, are applicable to both metals and ceramic powder, are cheap and accessible, are easy to remove and have good environment friendliness; provided feed preparation and removal methods have the advantages of short processing steps, strong adaptability to workpiece thickness, no harsh requirements for equipment and good removal effects, and can meet industrial expanded production requirements.

Binder for powder injection molding

The invention provides a wax-based binder for a compacting process in powder metallurgy as well as a preparation method and an application thereof. The binder consists of the following components by mass percent: 60 to 80 percent of solid paraffin, 3 to 10 percent of liquid paraffin, 1 to 10 percent of naphthalene, 2 to 9 percent of polyethylene vinyl acetate, 4 to 15 percent of polyolefin and 1 to 10 percent of stearic acid. The components of the binder are good in compatibility, the rheological property is good, the solvent degreasing rate is high, the retraction property is moderate, the degreasing blank is few in flaws, and the conformality is good; the binder also has the characteristics of cleanliness, low residue, little pollution and the like.

Wax-based binder for compacting process in powder metallurgy as well as preparation method and application thereof

The invention belongs to the technical field of powder metallurgy and provides a method for preparing ultra-fine grained titanium and titanium alloy from jet-milled titanium hydride powder. The method comprises the steps of firstly preparing mixed powder of ultra-fine titanium hydride powder or titanium hydride powder and other powder by a jet mill, further adding a small amount of paraffin wax into the well milled powder as forming agent, pressing the powder added with the forming agent to form a blank sample in a certain shape, and placing the blank sample into a sintering furnace for degreasing and sintering; sintering out an ultra-fine grained sintered product with the relative density of above 95% by controlling the heating rate of the furnace, the type of atmosphere in the furnace, the pressure and the vacuum degree of the atmosphere, the degreasing and sintering temperature, the time and other process parameters; then placing the sintered product into a hot isostatic pressing furnace for high-pressure treatment so as to obtain a fully dense ultra-fine grained product. The method provided by the invention has the advantages of simple process and low cost, is suitable for a wide range of titanium alloy types and product sizes, and can realize mass production.

Xiao Ping An

Papers

Wax-based binder for compacting process in powder metallurgy as well as preparation method and application thereof

Method for preparing ultra-fine grained titanium and titanium alloy from jet-milled titanium hydride powder