24results about "Molten casting coating" patented technology

The invention discloses a preparation process of a dual-material tappet with both wear resistance and toughness, and relates to the technical field of engine tappet manufacturing, the preparation process comprises the steps of matrix pretreatment, gradient heating, infiltration compounding, diffusion heat preservation, subsection cooling and finish machining, and a wear-resistant alloy material comprises the following chemical components in percentage by weight: 3.2-3.6% of C, 0.4-0.6% of Ni, 2.4-2.5% of Si, 0.9-1.3% of Cr, 0.6-0.9% of Mn and the balance of Fe and inevitable impurities. Mo is equal to 0.4%-0.65%, and Slt is equal to 0.1%, Plt; 0.1%, with the balance being Fe and inevitable impurities. Compared with the prior art, the method has the advantages that the performance can be flexibly matched according to different engine requirements; the comprehensive performance of the working face is remarkably improved by adopting an infiltration composite process; the strength and the toughness of the matrix are improved; the double-metal bonding strength is consistent; the cost of the infiltration composite process is lower than that of brazing; the matrix in the semi-molten state and the wear-resistant material form metallurgical bonding, and the bonding strength is higher; the combined steel and the gradient cooling process jointly improve the impact resistance.

In order to provide a structural component, in particular as a lightweight component, which has a simple and lightweight construction, has high strength and / or stiffness and can be produced in a cost-effective manner, the invention proposes that the structural component comprises at least one insert which is at least partially cast or injection-molded with a coating, wherein the at least one insert is formed at least in sections from wood and / or wood material, and wherein the at least one insert forms a reinforcing structure and / or a stiffened structure.

The present invention relates to a method for producing a substrate (2) which is coated with an alkali metal (1), in which method a promoter layer (3) which is composed of a material which reacts with the alkali metal (1) by at least partial chemical reduction of the promoter layer (3) is applied to a surface of the substrate (2) and a surface of the promoter layer (3) is acted on by an alkali metal (1) and then the alkali metal (1) is converted into the solid phase and a coating containing the alkali metal is formed.

The invention relates to a method for coating a workpiece surface (133), in which an atmospheric plasma beam (26) is generated by means of a plasma nozzle (2), a coating material is supplied to the generated plasma beam (26) and the plasma beam, with the coating material, is directed to the workpiece surface (133) to be coated, wherein the coating material is supplied to the generated plasma beam (26) in that a filament (34) is supplied to the generated plasma beam (26), said filament containing or consisting of the coating material. The invention also relates to a device (100, 200, 300, 400) for coating a workpiece surface (133), having a plasma nozzle (2) which is designed to generate an atmospheric plasma beam (26), wherein the plasma nozzle (2) has a nozzle opening (6) from which the plasma beam (26) exits during operation, and having a filament supply element (124) which is arranged and designed to supply a filament (34) to the generated plasma beam (26) during operation, and to a use of the device (100, 200, 300, 400).

The invention relates to an in-situ self-forming method of a liquid metal heat conduction interface in micro base station assembly, and belongs to the technical field of microelectronic device assembly and heat management. The method aims at solving the technical problems that the wettability of liquid metal on a micro base station substrate is poor, so that a heat conduction interface is not uniform, the liquid metal is prone to oxidation, and the heat conduction performance and stability are affected. According to the technical scheme, the method comprises the steps of performing plasma treatment on a substrate to increase surface energy; placing the processed substrate in a sealed cavity, and introducing inert gas to form a low-oxygen environment; liquid metal is deposited to an effective area of a substrate through a micro-droplet jetting device, ultrasonic vibration is synchronously applied in the whole deposition process, and the liquid metal is promoted to spread and surface oxides are removed through the shearing force and the cavitation effect of the ultrasonic vibration; and finally, the substrate is heated and cured, so that the liquid metal is converted into a solid state, and a stable heat-conducting interface is formed. The method is mainly used for constructing an efficient and reliable heat conduction interface in compact electronic equipment such as a micro base station.

The invention relates to a structural component, in particular for use as a lightweight component, which has a simple and lightweight structure and a high strength and / or rigidity and can be produced cost-effectively, wherein said structural component comprises an insert body, which is encapsulated or overmoulded with a sheathing at least in regions, wherein the at least one insert body is formed from wood and / or a wood material at least in regions, and wherein the at least one insert body forms a reinforcing and / or stiffening structure.

A manufacturing method of carbon fiber profiled bodies for aerospace, aviation and fire fighting is provided, relating to the technical field of carbon fiber preparation, and including the following steps: uniformly winding carbon fiber cloth around an exterior of a core mould and opening a liquid drainage hole; heating a carbon fiber shell, melting the core mould, and discharging a melted liquid of the core mould through the liquid drainage hole; allowing a non-stressed wall of the carbon fiber shell to be in contact with liquid nitrogen and prefabricating a layer of molten metal liquid on a stressed wall of the carbon fiber shell.

The present disclosure discloses a method for preparing a copper-plated titanium alloy wire reinforced aluminum-based composite material, including steps of: etching a cleaned TC4 wire; then electroplating a copper layer to obtain a copper-plated titanium alloy wire; performing heat treatment with two-step slow cooling on the copper-plated titanium alloy wire by using a heat treatment furnace; and, cladding a single-layer and single-pass ER5356 aluminum alloy on an aluminum alloy substrate by an arc additive manufacturing technology, then flatly spreading the heat-treated copper-plated titanium alloy wire in the center of the cladding layer to form an intermediate layer, and finally cladding a single-layer and single-pass ER5356 aluminum alloy matrix on the surface of the intermediate layer. In the present invention, by using copper as a transition interlayer of the aluminum-titanium interface, the generation of brittle intermetallic compounds between aluminum and titanium can be completely suppressed.

To provide a toroidal propeller whose shape can be optimized according to the type and size of mobility such as a ship, and which can be increased in size at low cost.SOLUTION: A system for manufacturing a toroidal propeller for mobility, comprising a 3D printer of a wire DED type, wherein the 3D printer is capable of forming a toroidal propeller having a toroidal shape.SELECTED DRAWING: Figure 6

The embodiment of the invention provides a conductive substrate layer and a preparation method and application thereof. The preparation method of the conductive substrate layer comprises the following steps: adding a liquid indium-tin alloy on the surface of one side of a first substrate layer, then covering the surface of the liquid indium-tin alloy with a second substrate layer for lamination, then removing the second substrate layer, and carrying out an in-situ oxidation reaction on the laminated indium-tin alloy to obtain the conductive substrate layer. In the preparation process of the conductive substrate layer, the microstructure and stress distribution of the ITO thin film in the conductive substrate layer can be regulated and controlled through specific indium tin alloy and setting of pressing process parameters, the ITO thin film with a gradient interface and a local strain buffer structure is formed, and therefore cracks are effectively reduced; in addition, the preparation method is simple in technological process, large-area compatible and continuous production can be achieved, and a new path is provided for large-scale production of the conductive substrate layer.

A method and apparatus are provided for repairing a surface defect, the method including the steps of: a) providing a bolus of an at least partially liquid alloy in a fill chamber, the fill chamber having a closable outlet and a closable pressure inlet, b) introducing a pressurized fluid into the fill chamber via the pressure inlet and accelerating the bolus such that the bolus is ejected from the fill chamber via the outlet, c) directing the bolus along a path between the fill chamber and the defect such that the bolus contacts the defect, and d) solidifying the at least partially liquid alloy while in contact with the defect.

A manufacturing method of carbon fiber profiled bodies for aerospace, aviation and fire fighting is provided, relating to the technical field of carbon fiber preparation, and including the following steps: uniformly winding carbon fiber cloth around an exterior of a core mould and opening a liquid drainage hole; heating a carbon fiber shell, melting the core mould, and discharging a melted liquid of the core mould through the liquid drainage hole; allowing a non-stressed wall of the carbon fiber shell to be in contact with liquid nitrogen and prefabricating a layer of molten metal liquid on a stressed wall of the carbon fiber shell.

The present disclosure discloses a method for preparing a copper-plated titanium alloy wire reinforced aluminum-based composite material, including steps of: etching a cleaned TC4 wire; then electroplating a copper layer to obtain a copper-plated titanium alloy wire; performing heat treatment with two-step slow cooling on the copper-plated titanium alloy wire by using a heat treatment furnace; and, cladding a single-layer and single-pass ER5356 aluminum alloy on an aluminum alloy substrate by an arc additive manufacturing technology, then flatly spreading the heat-treated copper-plated titanium alloy wire in the center of the cladding layer to form an intermediate layer, and finally cladding a single-layer and single-pass ER5356 aluminum alloy matrix on the surface of the intermediate layer. In the present invention, by using copper as a transition interlayer of the aluminum-titanium interface, the generation of brittle intermetallic compounds between aluminum and titanium can be completely suppressed.

The invention provides a method for casting a copper alloy layer in a plunger hole of a cylinder body. The method comprises the following steps: forming a copper melting pool between the periphery of a spline area of a steel substrate blank and the outer wall of the cylinder body; vertically placing the steel substrate blank with the spline area facing upwards and the flow distribution surface facing downwards; plunger steel pins are pressed into plunger holes in the steel base body blank respectively; the copper alloy block is placed in a copper melting pool on the steel base body blank to be sintered and cast; after casting and discharging the steel matrix blank, cooling from bottom to top; continuously cooling until the height of the blackening part of the steel matrix blank accounts for 2 / 3-3 / 4 of the total height, and finishing cooling; and tempering. According to the method, bottom-to-top cooling is adopted, bottom-to-top gradient cooling is formed, the cooling speed of the plunger hole copper alloy layer is slowed down, and cracks of the plunger hole copper alloy layer are avoided. Therefore, the formed plunger hole copper alloy layer has no casting defect.

A surgical instrument includes a pulley rotatable about a pivot pin and an end effector coupled to the pivot pin. The instrument also includes a cable wound at least partially around the pulley and configured to actuate the end effector. The cable and / or any of the pulley components (e.g., the pulley, the pivot pin, etc.) includes a first coating having tungsten disulfide.

The present invention relates to a method for depositing a metallic material 14 on a ceramic or mineral substrate 6 with an application device 1. From an energy source 2 arranged in the application device 1, a high-energy beam is directed toward the surface 5 of the ceramic or mineral substrate 6. Using the application device 1, the metallic material 14 is applied to an area of ​​the surface 5 of the ceramic or mineral substrate 6. The metallic material 14 is melted at least in parts by the high-energy beam, so that after solidification of the metallic material 14, the metallic material 14 is deposited on the surface 5 of the ceramic or mineral substrate 6 as a material application. The high-energy beam impinging on the surface 5 of the ceramic or mineral substrate 6 defines a working area 7, the position of which on the surface 5 can be changed by relative movement of the surface 5 of the ceramic or mineral substrate 6 and a laser device 3. In the working area 7 on the surface 5 of the ceramic or mineral substrate 6, a depression 13 is formed, and material application is performed in the depression 13.

The present disclosure provides a toroidal propeller with a shape that can be optimized according to the type and size of vessel, such as a ship, and that can be manufactured inexpensively at a large scale. The present disclosure relates to a manufacturing system for a toroidal propeller for a vessel, the system including a wire DED 3D printer and being capable of forming a toroidal propeller having a toroidal shape using the 3D printer.

The invention relates to the technical field of preparation of wear-resistant cladding materials, in particular to a wear-resistant cladding material for special repair and a preparation method thereof.The method comprises the steps that cladding raw materials are selected and pretreated, ceramic wear-resistant particles and a metal combined matrix are obtained, and the actual surface roughness is obtained by detecting the surface roughness of the ceramic wear-resistant particles. Judging whether the surface roughness is qualified or not based on the surface roughness threshold interval; carrying out metal coating on the qualified ceramic wear-resistant particles to prepare metal-coated ceramic particles, and detecting the uniformity and the average thickness of a metal film of the metal-coated ceramic particles to determine a complete embodied value of the metal film; and the metal bonding matrix is smelted, after a liquid metal bonding matrix is obtained, the liquid metal bonding matrix is mixed with the metal-coated ceramic particles, the adhesive force of the formed cladding coating and the distribution uniformity of the metal-coated ceramic particles are detected, and the smelting temperature or mixing parameters are adjusted based on the detection result. By adjusting the surface roughness and the distribution uniformity of the metal-coated ceramic particles, the problem of wear resistance of the wear-resistant cladding material is solved.

A tool (1) made of refractory metal and having a cooling bore (2), wherein a silver-based protective coating (3) is formed at least in some areas of a wall (3) of the cooling bore (2).