30results about How to "High quality preparation" patented technology

The invention discloses a hybrid welding method and hybrid welding equipment for laser electromagnetic pulse. The method can be used for laser seam welding and laser spot welding technology, a pulsed high magnetic field is applied to a welding region during the process of laser welding on a workpiece with the effect of laser beams so as to mutually react with an induced plasma, a welding pool and a stress strain field through welding and complete welding task. The equipment comprises a laser device, an electromagnetic pulse generator, a numerical control system, an optical transmission system and a laser electromagnetic pulse combined machining head. The combined machining head is used for integrating the laser beams with the pulsed high magnetic field and adjusting the distance between an electromagnetic conversion device and the workpiece; the combined machining head is arranged on a machine tool. The structural deformation can be reduced, the welding quality and machining efficiency are improved, and insurmountable technical problems when a metallic material structure is manufactured through existing single welding technology are solved.

The invention provides a method for preparing an amorphous coating in a manner of assisting in ultrahigh-speed laser cladding by ultrasonic peening. The ultrahigh-speed laser cladding technology and the ultrasonic peening micro forging technology are integrated and combined to be used, a workpiece is subjected to oil removal and rust removal, and the workpiece is mounted and located; amorphous metal powder is dried and is contained in a powder feeder; the laser power, the light spot diameter, the walking speed and the power feed speed are set, and ultrahigh-speed laser cladding equipment is started; the ultrasonic power and the ultrasonic frequency are set, ultrasonic peening equipment is started, and an ultrasonic peening head acts on the specific area of the solidified coating; claddingprocessing is finished, and the amorphous coating is naturally cooled to the room temperature; and the amorphous coating is cleaned by absolute ethyl alcohol, and the amorphous coating is aired afterbeing cleaned. By means of the method, the principles of rapid solidification of the ultrahigh-speed laser cladding technology, control solidification, stress elimination and micro defect eliminationof the ultrasonic peening micro forging technology and the like are fully utilized, and high-efficiency and high-quality preparation of the amorphous coating is achieved.

The invention discloses a hook-shaped commutator composed of a bakelite powder base and commutating copper sheets. The hook-shaped commutator is characterized in that insulation between the commutating copper sheets is carried out by milling insulating grooves with a circular milling cutter between, the tops of the insulating grooves is subjected to arc transition so as to be prevented from being pierced; the commutating copper sheets are elongated bodies before the insulating grooves are milled and hooks are formed; the outer side of each elongated body is an arc surface, the height of the top, where a hook is to be formed, of the elongated body is H; the middle positions of the left and right sides of the elongated body are provided with connected upper and lower punching notches respectively, the distance between the top of the upper punching notch and the top of the elongated body is less than H; the width of the lower punching notch is narrow; the width of the upper punching notch is wide; the upper punching notch has a punching slope in the radial direction, the punching slopes of adjacent elongated bodies define a tapered mouth with an inward large end. The hook-shaped commutator prevents glue from entering the insulating grooves, enables high-quality production and high mechanical strength, and facilitates automatic insertion and mass production.

The invention discloses an ultrasonic flame painting system and a manufacturing method of a high-quality iron-based amorphous coating. The ultrasonic flame painting system comprises an ultrasonic flame spray gun and air cooling equipment; the air cooling equipment comprises a base, a cooling table and a storage cylinder; the cooling table is a hollow structure which is internally provided with a cavity; multiple air outlets which communicate with the internal cavity of the cooling table are formed in the cooling table; the storage cylinder communicates with the internal cavity of the cooling table; a solenoid valve is arranged on an air inlet pipe; a temperature sensor is further arranged on the cooling table; the temperature sensor is used for monitoring painting temperature; when the high-quality iron-based amorphous coating is manufactured, temperature of a base plate in the painting process is monitored by the temperature sensor in real time; the flow of cooling air entering the cooling table is controlled by the solenoid valve, so that the temperature of the base plate is precisely adjusted during the painting process; the amorphous coating with high density and high amorphouscontent is obtained; painting efficiency is greatly improved; and the high-quality iron-based amorphous coating can be effectively manufactured.

The invention discloses a method for preparing a two-dimensional boron hydride nanosheet, and the method comprises the following steps of: placing a boron source in a vacuum reaction furnace, and obtaining the high-yield and super-stable two-dimensional boron hydride nanosheet in a quartz boat in a reducing atmosphere through a strict two-step or three-step sectional heating procedure under the condition of no metal substrate. According to the method, a step-by-step heating mode is adopted, under the condition that no metal substrate or other epitaxial substrates exist, the boron hydride nanosheet is obtained in the mode that the solid boron source is controllably decomposed through a two-step or three-step segmented heating method, and therefore the method for preparing the high-yield andsuper-stable two-dimensional boron hydride nanosheet is provided. The two-dimensional boron hydride nanosheet obtained by the method can be applied to multiple technical fields, including solar cells, energy storage and conversion devices, transistor devices, sensors and memristors.

The invention discloses a mild discharge preparation method and device of fluorinated graphene, and relates to the technical field of graphene preparation. A chemical carbonization process and a physical stripping process are carried out by utilizing an electric field, so that the binding force of a graphite layer is overcome; the carbonized graphite carbon is successfully stripped into lamellas, so that the method can be suitable for almost all carbon-containing carbon sources, and the preparation raw materials are expanded to a carbon-based substance while high-efficiency and high-quality preparation of fluorinated graphene is ensured, namely, almost all carbon-containing substances can be used as raw materials of the process, so that the raw materials are wide in source and low in cost. The active metal is used as a catalyst and is electrified for preheating at first, so that the temperature of a carbon source and the temperature of the active metal are increased, and the metal activity is improved; then the voltage is increased, graphitization of the carbon source is achieved, reaction is rapid, reaction energy consumption is greatly reduced, the good conversion rate is achieved, the efficiency of preparing fluorinated graphene powder is high, and fluorinated graphene is prepared in a low-temperature environment. Therefore, low energy consumption is realized and the preparation cost is reduced.

The invention discloses a large-area preparation method of perovskite films suitable for various substrate shapes. The method is characterized by comprising steps as follows: lead nitrate is used as a lead source, thiourea is used as a sulfur source, ammonia water is used as a complexing agent, the reaction speed and temperature are controlled, and lead sulfide films are produced on substrates in any shapes through chemical baths; then the lead sulfide films are converted into perovskite light absorption layer film materials with a solution immersion method or a chemical vapor deposition method. Perovskite light absorption layers are prepared through the chemical baths in combination with the solution immersion method or the chemical vapor deposition method, the method has the advantages of low cost, simplicity in operation, capability of realizing large-area amplification and the like, meanwhile, the prepared films are not affected by the substrate shapes and materials, and the high-quality perovskite films can be prepared on rigid or flexible substrates in various complex shapes such as curved surfaces, spherical surfaces and the like.

The invention discloses a photoetching method and device of a roll to roll flexible substrate. By designing an exposure infrared transmission path and an exposure mode, photoetching of the flexible substrate is achieved, and process steps of attaching a traditional flexible substrate onto a glass substrate, final substrate stripping and the like are not needed; and on one hand, the process device cost is saved, and on the other hand, the production yield and the production rate are improved. The fabrication process is simple, the production rate can be effectively improved, and rapid and high-quality etching on the flexible substrate can be achieved on the condition of lower production cost. The device disclosed by the invention mainly comprises an infrared light source, a flexible substrate transfer system and a photoresist coating device. The device is simple in structure, and is convenient to use, maintain and fabricate.

The invention discloses an energy-saving type garden nutrient solution mixing device which comprises a stirring tank. A stirring device for carrying out stirring is arranged inside the stirring tank,a liquid filling opening is formed in the top of the stirring tank, a hopper for adding solid raw materials is arranged on the top of the stirring tank, a discharge pipe is arranged at the bottom of the hopper, extends into the stirring tank and is used for conveying the solid raw materials into the stirring tank, a cover is mounted on the top of the hopper in a hinged manner, and a plurality of turbulent flow strips are further fixed onto the inner wall of the stirring tank; a liquid drain pipe for draining liquid is fixed to the bottom of the stirring tank, a valve is mounted on the liquid drain pipe, and a plurality of rubbing ridges are further fixed to the upper surface of the bottom of the stirring tank. The energy-saving type garden nutrient solution mixing device has the advantagesthat the solid raw materials can be effectively sufficiently dissolved, and accordingly nutrient solution can be prepared in a high-quality manner; extra solid raw material smashing mechanisms are omitted, accordingly, energy can be effectively saved, and the energy-saving type garden nutrient solution mixing device is light and simple in structure and can be widely used in nutrient solution preparation operation.

The invention provides a precise preparation and filling system and method for coarse aggregate and tailing slurry. The precise preparation and filling system for the coarse aggregate and the tailing slurry comprises a tailing slurry dense storage and metering system, a coarse aggregate metering and feeding system, a cement metering and feeding system, a concentrated water metering and feeding system, a filling slurry preparation system and an automatic control system, wherein the filling slurry preparation system and the automatic control system are correspondingly connected with all the systems. According to the precise preparation and filling method for the coarse aggregate and the tailing slurry, a static metering-periodic preparation circulating process is adopted, so that each filling material can be accurately metered; the stirring time of a stirrer can be set at will, full stirring of the filling materials is guaranteed, and high-quality preparation of filling slurry is guaranteed; the technical defects of poor filling slurry preparation quality, poor slurry pipeline conveying reliability, high filling cost and the like caused by low filling material metering precision, large errors, large sand discharging concentration fluctuation of tailing thickening equipment and the like in the conventional coarse aggregate cemented filling process in the prior art are effectively overcome.

The invention relates to an oil cooler module (1), comprising: a filter device (2) having a filter housing cavity (3) in which an annular filter element (4), which separates an unprocessed side (5) from a cleaned side (6), is arranged, wherein the filter housing cavity (3) comprises an opening (7) for inserting the annular filter element (4); and a heat exchanger (8) for controlling the temperature of oil (11) comprises a base plate (9). It is important for the invention that the filter device (2) is connected directly and tightly to the base plate (9) of the heat exchanger (8) via the filter housing cavity (3) of the the filter device (2) , such that the base plate (9) closes the opening (7) of the filter housing cavity (3). As a result, a previously required filter housing cover can be discarded, and pressure losses can be reduced.

The invention discloses a method for preparing a macitentan related substance. Specifically, the invention relates to a method for preparing a metabolic product (a compound of a formula I) of a pulmonary hypertension-resistant drug macitentan (N-[5-(4-bromophenyl)-6-[2-[(5-bromo-2-pyrimidyl)oxo] ethyoxyl]-4-pyrimidyl]-N'-propanesulfonamide). The method comprises the following steps: carrying out a heating reaction on macitentan, and obtaining a target compound. According to the method, the target product can be efficiently prepared at high purity. The structural formula is as shown in the specification.