630 results about "Spray forming" patented technology

Thermal spray processing and cold spray processing are utilized to manufacture porous starting materials (such as tube stock, wire and substrate sheets) from biocompatible metals, metal alloys, ceramics and polymers that may be further processed into porous medical devices, such as stents. The spray processes are also used to form porous coatings on consolidated biocompatible medical devices. The porous substrates and coatings may be used as a reservoir to hold a drug or therapeutic agent for elution in the body. The spray-formed porous substrates and coatings may be functionally graded to allow direct control of drug elution without an additional polymer topcoat. The spray processes are also used to apply the drug or agent to the porous substrate or coating when drug or agent is robust enough to withstand the temperatures and velocities of the spray process with minimal degradation.

A topical sustained release delivery system for delivery of antifungal agents to the finger or toenails achieving high penetration through the nails by combining the antifingal agent with a keratolytic agent and a humectant. The pharmaceutical sustained release topical preparation is provided in a varnish or spray form for treating the nail and surrounding tissues, where the active ingredient is an antifungal agent, a keratolytic agent, or preferably a combination of an antifuingal and a keratolytic agent. The composition may further comprise an antibacterial, an antiviral, an antipsoriatic agents, or combinations thereof.

The invention discloses a metal molten drop ejecting device and a method for ejecting high-melting-point metal molten drops using the same. The metal molten drop ejecting device is used for solving the technical problem that the existing metal molten drop ejecting device is poor in stability in the ejecting forming process when ejecting high-melting-point light reactive metal molten drops. The metal molten drop ejecting device maintains stable ejecting of the high-melting-point metal molten drops by means of a nozzle automatic dredge device and an ejecting state detection system. The nozzle dredge device and a metal molten drop ejecting state monitoring and feedback system for high-melting-point metal ejecting are adopted; when the molten drop ejecting state monitoring and feedback systemdetects unstable ejecting state and transmits cleaning signals, an excitation rod is lowered, large positive or negative pressure is led into an inner channel of the excitation rod instantly, so thatmolten metal or gas at the position of a nozzle flows fast to bring out scale cinder or impurities adhered onto the inner wall of the spraying orifices, the aim of cleaning and dredging tiny nozzles can be achieved, and accordingly the ejecting forming process of high-melting-point metal molten drops is stable.

The invention provides a manufacturing method of high-vanadium high-cobalt high-speed steel, wherein, the composition weight percent of the high-speed steel is as follows: 1.1 percent to 2.18 percent of C, 5.0 percent to 8.0 percent of W, 4.0 percent to 6.0 percent of Mo, 3.0 percent to 5.0 percent of Cr, 1.2 percent to 8.3 percent of V, 6.5 percent to 11.5 percent of Co and the rest, Fe; the process steps of the high-speed steel includes master alloy preparation, spray forming, hot forging, quench tempering treatment, turning, milling and grinding or TiN / AlTiN coating treatment. The invention omits working procedures such as powder sieving, blending, encapsulation and cold and hot isostatic pressing, etc. and does not need costly equipment investment; moreover, the performance of the invention reaches to or even exceeds that of powder high-speed steel, thereby saving process cost and reducing the applied cost of the high-speed steel. The invention can be widely used in various cutters such as cutting tools for making difficult-to-machining material, and is particularly suitable to make cutters with quick-cutting, high hot hardness and long service life such as large-size broaching tool, gear shaver, hob and gear shaping tool for machining gear and various milling cutters used in digital control machine tool, etc.; moreover, the invention also can be used in making mould, etc.

The invention provides a three-dimensional forming device of a three-dimensional forming object, a three-dimensional forming method, and a setting data creation device for the three-dimensional forming device. A control device 10 is used for controlling the driving of a horizontal driving device, spraying and curing molding materials in one piece by a molding material spraying device, controlling a vertical driving device and moving to the spraying position of the cured piece, spraying and curing the molding materials on the next layer to continuously laminate pieces. A hollow part ES is formed in the piece on the interface of the corresponding molding materials of different types, a mold material MA and a support material SA on the interface are changed from one molding material into the other molding material along the lamination direction of molding objects. The control device 10 executes the control to prevent the molding materials from being sprayed by the molding material spraying device on the position corresponded with the hollow part ES or reduce the spraying amount of the molding material.

The invention provides a method and equipment for manufacturing and repairing a high-performance composite roll by laser spray forming, which uses laser spray forming to manufacture the transition layer and the working layer of the roll. It is characterized in that the specific method steps are as follows: A) removing the surface of the core of the roll B) Put the powder of the working layer material and the powder of the roller core into the powder feeding system respectively, and start the laser jet synchronous powder feeding through the surface of the roller whose stroke is controlled by the mechanical arm Direct metal Manufacture the intermediate transition layer of the roll; C) After one layer is deposited, the interlaced deposition is realized by changing the direction of the square spot and the movement direction of the mechanical arm; D) After the transition layer is formed, the spray forming on the surface of the transition layer is completely formed by the added The functional material constitutes the working layer. The invention uses a high-power short-wavelength laser as a processing light source and shapes the light spot of the laser into a rectangle, thereby effectively improving the quality of spray forming and increasing the processing speed.

A spray forming pattern of a first metal having a melting point at a first temperature is formed. The spray forming pattern has a surface defining a cavity that has the shape of a master pattern. Steel particles having a carbon content in the range of 0.01-0.9% by weight are sprayed onto the spray forming pattern to form a deposit on the spray forming pattern. The deposit has a thickness of at least 0.5 inches and the temperature of the steel particles increases as the thickness of the steel deposit increases. The spraying conditions are controlled so that the steel particles coming into contact with the spray forming pattern results in a surface temperature of the spray forming pattern of less than about 80 DEG C. The deposit and the spray forming pattern are heated to a second temperature, which is higher than the first temperature, to melt the spray forming pattern from the deposit. The resulting deposit has the general shape of the master pattern.

The present invention is directed to methods and apparatus that use electrostatic and / or electromagnetic fields to enhance the process of spray forming preforms or powders. The present invention also describes methods and apparatus for atomization and heat transfer with non-equilibrium plasmas. The present invention is also directed to articles, particularly for use in gas turbine engines, produced by the methods of the invention.

An elastomeric gel-filled prosthetic implant having a shell made of a single gel barrier layer. The barrier layer is formed of a homogeneous silicone elastomer capable of sterically retarding permeation of the silicone gel through the shell and having a bleed rate that is less than about 40% of the bleed rate of current shells which use a sandwiched construction with an internal barrier layer. Further, the barrier layer shell is made of a material that exhibits a wet strength that is comparable to or greater than current shells. The silicone elastomer may be a polydimethyl siloxane, and the substituted chemical group is a diphenyl group with a minimum mole percent of at least 13%. The implant may be designed for breast reconstruction or augmentation such that the shell is accordingly shaped. The shell wall thickness is at least 0.254 mm (0.010 inches), and desirably about 0.456 mm (0.018 inches). The implant shell may be made by dip-forming, spray-forming, or rotational molding. The exterior may be smooth or textured.

Methods and apparatus for producing large diameter superalloy ingots are disclosed. A material comprising at least one of a metal and a metallic alloy is introduced into a pressure-regulated chamber in a melting assembly. The material is subjected to a wide-area electron field within the pressure-regulated chamber to heat the material to a temperature above the melting temperature of the material to form a molten alloy. At least one stream of molten alloy from the pressure-regulated chamber is provided from the melting assembly and is fed into an atomizing assembly, where particles of the molten alloy are generated by impinging electrons on the molten alloy to atomize the molten alloy. At least one of an electrostatic field and an electromagnetic field are produced to influence the particles of the molten alloy. The particles of the molten alloy are deposited onto a collector in a spray forming operation to form an alloy ingot.

A modified faujasite is obtained by exchanging the faujasite with a phosphorus compound and an ammonium compound, and then introducing a rare earth solution into the exchange slurry for further reaction, filtering, washing, and roasting with water vapor. Mix the zeolite component, clay and the precursor of the high-temperature-resistant inorganic oxide uniformly in a certain proportion, spray molding, and washing. The prepared catalyst has good activity and stability, high gasoline yield, low coke yield, and heavy oil Strong cracking ability and heavy metal pollution resistance.