31results about How to "Achieve fusion" patented technology

The invention discloses a method for manufacturing a polyamide three-dimensional object by laser. The method comprises the steps that a layer of manufacturing material is laid and conveyed onto a bottom plate or a selective fusion layer to form a novel material layer; a laser device emits laser; the laser is guided to selectively irradiate a fusion region on the novel material layer; the fusion region is a cross section position, corresponding the three-dimensional object to be manufactured, on the novel material layer, wherein the laser is generated by the laser device with the wavelength being 400 to 1080nm; the manufacturing material is a mixture of a polyamide powder material and a thermal medium material; the thermal medium material absorbs laser energy and conducts the laser energy to polyamide powder, so that the manufacturing material in the laser irradiation region realizes fusion. The polyamide three-dimensional object with high manufacturing precision can be manufactured according to the method.

The invention discloses a brittle metal microspheres preparation method based on a metal microspheres forming device. The metal microspheres forming device comprises an upper melting chamber and a lower cavity body. The melting chamber is mainly used for melting brittle metal. The molten brittle metal is sprayed into the cavity body by a spray nozzle and cools, solidifies and forms in the cavity body. Prepared brittle metal microspheres are distributed uniformly in particle size with the range being between 1mm and 4mm and the morphology of the prepared brittle metal microspheres is in a standard sphere shape. The method is simple in equipment, strong in operability and capable of continuous production and meeting the industrial production requirements.

The invention discloses a novel double-electrode direct-current arc system for melting wastes. The novel double-electrode direct-current arc system solves the technical problem of technical defects existed in an existing double-electrode arc technology aiming at the background technology. The adopted technical scheme is characterized in that the novel double-electrode direct-current arc system for melting the wastes comprises a melting furnace, a melting furnace body provided with a fly ash feed inlet and a slag discharge opening, double electrodes vertically inserted into the furnace body, and two lifting systems which are in one-to-one correspondence to the double electrodes and used for adjusting the heights of the double electrodes relative to the surface of a melting pool, wherein the space between the double electrodes vertically inserted into the furnace body is more than two times larger that the height of the melting pool; the two electrodes are connected onto a negative pole and a positive pole of a direct-current power supply; a furnace bottom conductive piece is arranged at the bottom part of the furnace body; and the conductivity of the furnace bottom conductive piece is more than two orders of magnitude higher than the conductivity for melting the wastes. The novel double-electrode direct-current arc system for melting the wastes has the advantages that current distribution in the melting pool is improved, and the fly ash melting pool can be more effectively melted.

This invention relates to a method of manufacturing an aluminum heat exchanger tube. In forming a thermally sprayed layer 21 on a surface of an aluminum flat tube by thermally spraying Al-Si alloy thermal-spraying particles, quenching the thermally sprayed thermal-spraying particles in a molten state to make them adhere to the tube core 2a. The surface of the thermally sprayed layer 21 is smoothed with, e.g., reduction rolls to form a brazing layer 20. With this method, brazing defects due to fin detachment, erosion to the tube of the brazing material, etc., can be prevented, resulting in good brazing performance.

The invention discloses a small micro high-temperature mixing extrusion vertical testing machine which is used for researching special micro high-temperature resistant macromolecule materials for laboratories and enterprises, is small testing equipment with the characteristics of high processing temperature, large torque, small volume, high control precision and the like and comprises a charging hopper, a small threaded rod, a machine cylinder, a heating sleeve, a machine head, a flange, a driving shaft, an oblique gear, a speed regulating motor, a control cabinet and the like. The charging hopper and the machine cylinder of the testing machine are connected by a thread screw and are positioned on a same axes; the small threaded rod and the machine cylinder are in vertical structures and the driving part is arranged on one end with largest root diameter of the threaded rod, i.e. the end part of the extrusion section of the threaded rod, thereby enabling the threaded rod to load the torque to the maximum. The threaded rod and the driving shaft of the testing machine are in plane contact by a slot, and the threaded rod stops rotating in the process of high-temperature melting mixingextrusion and is pulled out instantly. The testing machine is suitable for researching the micro melting mixing extrusion and the formation of all thermoplastic macromolecules, in particular special heat resistant macromolecule materials.

The invention discloses a forming method for throat insert lining; wherein, a clamp is arranged on the terminal of the inner core mold with the stable shape and structure, according to the inner structure of throat insert lining; the high melting point metal material sprayed coating layer is sprayed on the outer flank of the inner core mold by the art of air plasma spraying, according to the thickness demand of throat insert lining; the compatibility of the sprayed coating layer material and the inner core mold material is low; the separation of the sprayed coating layer material and the inner core mold material is easy; the outer profile of the sprayed coating layer is finish-machined, the inner core mold is separated from and the acquired sprayed coating layer is the product of throat insert lining, according to the exterior shape and structure of throat insert lining and the thickness demand of each part. The forming method for throat insert lining has the advantages of simple technology, easy manufacture, realizing the near-size forming, low raw material cost, simplifying the subsequent processing procedures, and resolving the problems of high temperature resistant thin wall irregular parts forming of difficult machining and easy broken of shaped product.

The invention belongs to the technical field of solid urea melting equipment, and provides an energy-saving device for dissolving solid urea in production of melamine. The energy-saving device comprises a urea melting tank and a liquid urine washing tower, wherein a middle sealing head is arranged in the liquid urine washing tower; a middle tower reactor is arranged on the middle sealing head in the liquid urine washing tower; a bottom tower reactor is arranged at a bottom end of the liquid urine washing tower; a liquid urine spraying head and a high temperature process gas inlet are formed ina top end of the liquid urine washing tower; the bottom tower reactor is connected with the urea melting tank, and is further communicated with the liquid urine spraying head by a liquid urine circulation pump; one side of the middle tower reactor is communicated with the bottom tower reactor by a gas-liquid separator; a molten urea lead-out pipeline is arranged on the middle sealing head; and the middle tower reactor is communicated with the urea melting tank by the molten urea lead-out pipeline. The energy-saving device and method provided by the invention solve technical problems that dissolution of solid urea consumes a large amount of steam and the production costs are increased.

The invention provides a 3D printer of a wax part and relates to the technical field of additive manufacturing. The 3D printer structurally comprises a machine frame, a consumable extrusion system anda spatial motion system. The consumable extrusion system comprises a paraffin wax container, a wax liquid conveying pipe, a positive displacement pump, a heating block, an extrusion head and a cooling fan. The paraffin wax container can be fixed to the machine frame, the wax liquid conveying pipe is connected with the paraffin wax container and the positive displacement pump, an outlet of the positive displacement pump is connected with the heating block, and an outlet of the heating block is connected with the extrusion head. The spatial motion system comprises a first direction motion mechanism, a second direction motion mechanism, a third direction motion mechanism and a printing trolley. The positive displacement pump, the heating block, the extrusion head and the cooling fan are arranged on the printing trolley. The 3D printer uses industrial paraffin wax as a consumable and prints the wax part through a fused deposition modeling process. By the adoption of the 3D printer of thewax part, the cost of the printer can be greatly reduced, the structure of the printer is simplified as well, the price of the consumable is lowered, and the 3D printer is widely applied to the fieldssuch as investment casting and new product development.

The invention discloses a three-layer composite liquid crystal polymer enhanced pipe. The composite liquid crystal polymer enhanced pipe is characterized by sequentially and coaxially covering an outer functional material layer, an intermediate thermotropic liquid crystal polymer engineering plastic enhanced layer and an inner functional material layer; the intermediate thermotropic liquid crystal polymer engineering plastic enhanced layer forms a spiral directional array in an equal distance on the outer edge of the inner layer of a pipe along a flowing direction. According to the composite liquid crystal polymer pipe, liquid crystal winding molding is carried out by using a special device and utilizing the strength and the pressure resistance property of the liquid crystal, as well as the high intensity and high flexibility and self-fusion property of polyethylene, so that the use of inner layer materials and outer layer materials under special work conditions such as abrasion resistance, corrosion resistance, flame retardant, anti-static electricity and super-lubrication can be realized, the heatproof property and pressure resistance levels of the pipeline can be improved based on the property of the liquid crystal polymer, and the water delivery requirement of the pressure of 20 MPa can be realized at maximum.

The invention discloses a dust removal device of electric automation equipment for easy cleaning. The device comprises a moving base, and a support rod, a first dust collecting can, and a second dustcollecting can are disposed on the moving base. The support rod is connected to the middle of the upper surface of the moving base through a rivet. The first dust collecting can is connected to the left side of the upper surface of the moving base through a rivet. The second dust collecting can is connected to the right side of the upper surface of the moving base through a rivet. The upper end ofthe support rod is provided with a ventilation channel and a connection pipe. The ventilation channel is connected with the upper end of the support rod through a rivet. The connection tube is connected with the middle of the support rod through a rivet. A water pipe joint is disposed on the connection tube. The automatic flushing of the first dust collecting can and the second dust collecting can on the dust removal device can be achieved, thereby speeding up cleaning speed of the first dust collecting can and the second dust collecting can and reducing the labor intensity of an operator during washing the first dust collecting can and the second dust collecting can.

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a welding method, a preparation method and a welding structure of a cylindrical battery, the welding method comprises the following steps: step 1, tabs with different polarities are led out from the same end of a battery cell, and the tabs comprise a positive tab and a negative tab; 2, dividing the top cover into a first cover plate and a second cover plate, wherein the first cover plate and the second cover plate are respectively arranged above the positive pole lug and the negative pole lug; step 3, arranging welding pieces between the top cover and the electrode lugs, arranging a first welding piece between the first cover plate and the positive electrode lug, and arranging a second welding piece between the second cover plate and the negative electrode lug; and 4, laser welding is used for sequentially penetrating through the top cover, the welding piece and the electrode lug, and fusion welding of the top cover, the welding piece and the electrode lug is achieved. By arranging the welding piece between the top cover and the tab, the welding piece, the tab and the top cover can form a continuous solid solution in the welding process, and generation of intermetallic compounds is prevented, so that the welding performance is improved.

The invention belongs to the technical field of preparation or chemical processing of high polymer material compounds, and discloses an environment-friendly vehicle-mounted purifier shell and a preparation technology thereof. The environment-friendly vehicle-mounted purifier shell is prepared from the following raw materials: polylactic acid, a nucleating agent, an antioxidant, a filling agent, toner, a heat stabilizer and a light stabilizer. The preparation technology comprises the following steps that firstly, all the raw materials are dried by using a dryer, and stirring and uniform mixingare carried out so as to form a mixture for later use; then the mixture is heated, stirring is carried out while heating is carried out, so as to enable the raw materials to be in a molten state, andgranulating is carried out to form a modified material; and the modified material is heated and molten to form a molten material, and the molten material is put into a mould for injection molding so as to form the environment-friendly vehicle-mounted purifier shell. The environment-friendly vehicle-mounted purifier shell and the preparation technology thereof solve the problem that an existing vehicle-mounted purifier shell is nondegradable.

The invention discloses a fused salt stop device, a using method and application. The stop device comprises a sealing container used for loading fused salt, a heating system, a first guide pipe and asecond guide pipe. The first guide pipe and the second guide pipe penetrate through the inner wall face of the sealing container from the outer wall face of the upper end of the sealing container respectively; the height of the bottom of the first guide pipe from the bottom face of an inner cavity of the sealing container is shorter than the distance between the bottom of the first guide pipe andthe bottom of the second guide pipe; when the bottom of the second guide pipe is higher than the liquid level of the fused salt or the fused salt is solidified from the liquid state, stop is achieved;when the bottom of the second guide pipe is lower than the liquid level of the fused salt and the fused salt conveyed into the container by means of the first guide pipe is in a liquid state, communication is achieved. According to the fused salt stop device, the feature that the fused salt is well combined with the inner wall of the container after being solidified is utilized, the container with a large space is designed in combination with a large height difference between the guide pipes, complete stop of the fused salt can be achieved, and rapid recovery of communication can be ensured;the airtightness is good, and the service life is long; the phenomenon that fused salt is stuck in a valve and other devices due to solidification after volatilization can be avoided.

The invention provides a device for simulating fusion of molten microdroplets and solidified microdroplets in a microgravity environment. The device overcomes the defect that an existing drop tube device cannot complete a ground simulation microgravity environment uniform microdroplet fusion test at present. The device is provided with a solidified microdroplet releasing module used for containing/releasing solidified metal microdroplets, the solidified microdroplet releasing module is matched with a uniform metal microdroplet spraying module, a position adjusting module and a control module, controlled fusion of the metal microdroplets under the microgravity condition can be achieved, a fused microdroplet sample is obtained, image data are collected (with the help of an image collecting module), a foundation is laid for metal microdroplet microgravity fusion behavior research and space metal 3D printing.

The invention provides a molten liquid drop generating device for an EUV light source, which is characterized in that a heat conduction oil input port and a heat conduction oil output port are formedin the outer wall of a body; a heating cavity is filled with heat conduction oil, and an electric heating rod extends into the heat conduction oil; an inner cavity is installed in the inner cavity, the top of the inner cavity of the top cover is connected, a fixing cap is installed in the inner cavity, a compression spring is fixed to the bottom of the fixing cap, the bottom of the compression spring is a filter cap, the bottom of the filter cap is communicated with an output channel, the output channel is connected with a high-speed spray nozzle, and the high-speed spray nozzle is connected with a compression nut fixed to the bottom of the body. The device has the advantages that the filtering cap is used for removing metal impurities; the sealing ring and the compression spring are usedfor maintaining the melting device to be used in a high-temperature and high-pressure environment, and the inner cavity realizes heating, melting and conveying of metal; the heating cavity is used fortransmitting a heat-conducting medium; the electric heating rod maintains the whole experiment temperature environment of the melting device; and the high-speed spray nozzle sprays experimental metalliquid drops according to requirements.