73results about How to "Guaranteed surface smoothness" patented technology

The invention discloses a silver nanowire electrode-based efficient flexible quantum dot light-emitting diode and preparation thereof. The silver nanowire transparent electrode-based flexible quantumdot light-emitting diode is characterized by comprising a flexible transparent cathode, an electron transport layer, a quantum dot light-emitting layer, a hole transport layer, a hole injection layerand a metal anode from bottom to top, wherein the flexible transparent cathode is a composite electrode formed by embedding silver nanowires into a flexible substrate. According to the silver nanowireelectrode-based efficient flexible quantum dot light-emitting diode, the smooth surface of a nano zinc oxide layer is obtained through improving the key parameters and conditions of a corresponding device preparation process and modifying the surface of the electrode by using nano zinc oxide, so that the electron transport property of the nano zinc oxide is ensured, the effect, of enhancing the light extraction efficiency of the flexible quantum dot light-emitting diode, of the silver nanowire flexible transparent electrode is brought into fully play, and the light-emitting efficiency of theflexible quantum dot light-emitting diode is effectively improved to the world leading level.

The invention discloses a cable insulating layer specimen cutting device and cutting method. The device comprises a blade, a fixed shaft and a fixed base, wherein the fixed shaft comprises a first assembly section and a second assembly section which are connected with each other; the first assembly section is connected with a rotating shaft of a lathe, and the second assembly section is sleeved with a cable insulating layer specimen; the fixed base is arranged on the lathe, a blade groove matched with the blade is formed in the fixed base, the blade is fixedly arranged in the blade groove, and the edge of the blade is parallel to the axial direction of the fixed shaft. Along with rotation of the cable insulating layer specimen, the blade approaches the surface of the cable insulating layer specimen and cuts along the perimeter direction of the specimen to obtain a specimen slice, so that the inner, middle and outer layers of the cable insulating layer specimen can be definitely separated, and the thicknesses of the specimen slices are good in uniformity, so that an excellent experimental basis is provided to researches on the aging mechanism of insulating layer materials with different distances from cable cores.

The invention relates to a method for coloring surface pattern or character of aluminum alloy material and products thereof. The method comprises the following steps: a surface of the aluminum alloy material is provided with an insulating layer and the pattern or character is carved by laser to become a status of local insulation and local conduction ; then by using a way of electrical coating, the conductive part of the pattern or character is sequentially processed by electrical draping to enable the pattern or character to have a draping layer different with the color of the aluminum alloy material and represent different colors as well as keeping a flat surface.

The invention discloses a degradable rice sucker. The sucker is prepared from, by weight, 40-65 parts of rice flour, 30-45 parts of cassava flour, 10-20 parts of water, 0.5-2 parts of edible pigments,0.2-0.5 part of sugar, 0.1-0.2 part of salt and 0.3-0.4 part of a curing agent, 0.4-0.5 part of a waterproof agent and 0.5-1 part of an antioxidant. Accordingly, grain rice and cassava serve as raw materials to make a disposable edible thermoplastic starch fully degradable sucker, the durability is high, recovery is easy, the decomposition speed is high, environmental friendliness is achieved, and the sucker is beneficial to human health.

The invention discloses a method for determining a wing-shaped oblique-flow cooling fan of an automobile engine. The method is implemented by the following steps: obtaining essential parameters of a plane blade lattice, obtaining the definite shape of a meridian plane, calculating a theoretical total pressure rise value, calculating flow velocity distribution, mapping and obtaining an equivalent velocity triangle, selecting blade profile parameters, performing correction compensation on the wing-shaped blade profile, calculating blade profile parameters, calculating blade coordinate values, fitting to obtain a blade cross-sectional line by using the obtained blade coordinate values, superposing individual cross-sectional planes in the radial direction to form a blade profile, and finally determining the wing-shaped oblique-flow cooling fan. The method can not only ensure the smoothness of curved surface of the fan but also meet the requirements for pneumatic property and process, greatly reduces the design cycle, facilitates the modification of the following design, and greatly reduces the development cost.

The invention provides a polyamide compound material and a production technology thereof. The polyamide compound material comprises the following components of, in parts by weight, 78.4-13% of high-viscosity polyamide, 10-20% of low-viscosity polyamide, 0.2-2% of a thermal stabilizer, 1-6% of a compatilizer, 10-35% of glass fibers, 0-10% of talcum powder, 0-10% of whiskers, 0.2-2% of inorganic toner and 0.2-2% of another assistant. According to the polyamide compound material and the production technology thereof, the high-viscosity polyamide and the low-viscosity polyamide are adopted for compounding, the proper glass fibers, talcum powder, whiskers, compatilizer, assistant and inorganic toner are added to make the produced polyamide compound material capable of resisting high and low temperature, good mechanical performance is maintained, meanwhile, good surface appearance is obtained, and the rigidity and the tenacity of the material are improved so that the mechanical performance of the material can be maintained for a long term, change of material color is reduced, and the polyamide compound material can be applied more widely.

The invention discloses a hot forging and molding process for oxygen free copper materials. The hot forging and molding process is different from the traditional cold extrusion process in prior art. According to this process, a hot forging method is adopted to process the oxygen free copper materials and process parameters including a preheating temperature of moulds, a heating temperature of materials, and a lubrication oil component are ensured. The hot forging and molding process can be used to prepare precise oxygen free copper components which are smooth on surface, good in performance, and qualified in combustion. The process steps are simple to operate and applicable to industrialization promotion, the finished product rate is high, and all the parameters of products are excellent.

The invention provides sand-exposing concrete and a preparation method thereof. The sand-exposing concrete adopts a sand-exposing concrete surface hardening material, is subjected to erosion process treatment and comprises a sand-exposing face layer, a sand-exposing concrete surface hardening layer and a concrete base layer. The preparation method comprises the steps that the concrete base layer is cast in place; when the cast-in-place concrete base layer is going to initial setting, the sand-exposing concrete surface hardening material is spread, and after the sand-exposing concrete surface hardening material fully absorbs water to be wetted, trowelling and finishing are conducted; the concrete is subjected to moisture insulating and curing for 3 days, and thus the sand-exposing concretesurface hardening layer is formed; an aggressive agent is splashed on the sand-exposing concrete surface hardening layer, then washing treatment is conducted through a brush, and the sand-exposing face layer is formed; and the concrete is continued to be subjected to moisture insulating and curing for at least 7 days. According to the sand-exposing concrete and the preparation method thereof, sandgravels are exposed, thus the veneer effect is achieved, the sand-exposing face is even and flat, the problems that as for a traditional delayed-setting flushing process, the surface flatness is difficult to control, the exposed depths are not consistent, and sand exposing is uneven are avoided, and the sand-exposing concrete has the excellent mechanical properties, anti-skid performance, crack resistance and the like.

The invention discloses a deep groove ball bearing subjected to nickel coating treatment, and relates to the technical field of bearings. The deep groove ball bearing comprises an outer bearing ring,an inner bearing ring and steel balls; the inner surface of the outer bearing ring and the outer surface of the inner bearing ring are in rolling connection with the surfaces of the steel balls correspondingly; steel ball retainers are arranged on the positions, between the outer bearing ring and the inner bearing ring, on the left sides and the right sides of the steel balls in a sleeving mode; and wavy circular grooves matched with the steel balls are formed in the inner surface of the outer bearing ring and the outer surface of the inner bearing ring correspondingly. According to the deep groove ball bearing subjected to nickel coating treatment and a machining method thereof, a thick nickel-chromium coating and a thin nickel-chromium coating are arranged to wrap the outer bearing ringand the inner bearing ring, thus the outer bearing ring and the inner bearing ring are not prone to being corroded, rusting is avoided during 72 hours of a salt spray test, and the abrasion-resistantstrength is improved; and frosted surfaces are arranged, thus the connecting strength of the coatings is enhanced, the coatings can be prevented from falling off easily, and meanwhile through specialstructures of the wavy circular grooves, the deep groove ball bearing cannot be abraded completely by the steel balls after being used for a long time.

The invention discloses a simple flexible pressure equalizing pad for hot press molding of a composite material and application thereof. The simple flexible pressure equalizing pad comprises a demolding cloth layer and a fiber cloth layer, wherein the demolding cloth layer is laid and attached to the fiber cloth layer. The simple flexible pressure equalizing pad is mainly used for assisting the molding process of a composite material part autoclave. Compared with a traditional pressure pad, the simple flexible pressure equalizing pad is simple in structure, low in manufacturing cost and shortin preparation period; and the flexibility of the simple flexible pressure equalizing pad is better than that of the pressure pad, the matching degree of the simple flexible pressure equalizing pad and a composite material part in the auxiliary molding process is good, and the surface smoothness of the composite material part after molding is better guaranteed.

The invention discloses a viscous slurry grinding machine and a using method thereof. The viscous slurry grinding machine comprises a rack, the two ends of the rack are each provided with a first height adjusting device, the upper end of each first height adjusting device is connected with a supporting plate, and the first height adjusting devices are used for finely adjusting the height of the supporting plates. The upper end face of each supporting plate is provided with a second height adjusting device, the upper end of each second height adjusting device is connected with a support, and the second height adjusting devices are used for roughly adjusting the height of the supports. A grinding roller and a cleaning roller are mounted between the two supports, one end of the grinding roller and one end of the cleaning roller are connected with a first driving device and a second driving device correspondingly, the grinding roller and the cleaning roller are arranged in parallel, and a gap is formed between the grinding roller and the cleaning roller. A spraying pipe is further mounted between the two supports and is aligned to the gap between the grinding roller and the cleaning roller. According to the viscous slurry grinding machine, the height of the grinding roller can be adjusted, the surface smoothness of a gypsum board is guaranteed, operation is easy, and the production efficiency can be greatly improved.

The invention discloses a putty construction method capable of improving strength and durability. The putty construction method comprises the following steps: removing stuck mortar, burrs and splashes from pits and raised parts of a wall; adding water into a putty powder, and filling and leveling up the pits and cracks; adding water into the putty powder, stirring, mixing, scraping a layer of putty, polishing by different layers, coating with a cellulose solution, brushing with caustic soda, air-drying, and repeating the steps for several times; wiping stains and floating powder on the putty surface by using water, continuing air-drying, and painting with finish paint. The putty construction method is distinct in level, and is efficient; compared with the conventional brush coating method, the putty construction method has the advantage of higher interface bonding force; through layered brushing of effective components, the overall flexibility and compactness are improved, so that an obtained putty layer is high in strength and durable.

The invention discloses metal magnetic-acceleration sand-blasting plating equipment adopting a metal plating electro-thermal process. The metal magnetic-acceleration sand-blasting plating equipment comprises a base, wherein the middle position of the top of a protective top plate is fixedly connected to a plating liquor raining mechanism; the middle positions of outer walls of two sides of the protective top plate are fixedly connected to sand-blasting mechanisms; and sides, close to a limiting circular slot, of the sand-blasting mechanisms are provided with magnetic acceleration mechanisms. The invention relates to the technical field of metal plating. Magnetic fields are knitted through a permanent magnet, and spraying and accelerating of sand-blasting gravels are performed through magnetic force, so that electron flow is formed by internally charging; electron flow hits against a plated part, so that a surface phase of the plated part generates changes, and therefore, plating effectis better, is more uniform and is deeper, a clad layer is prevented from being shallow to wear easily, and the service life of the plated part is prolonged; and moreover, the sand-blasting gravels hit against the clad layer to form vibration, so that residual impurities and plating liquor on the surface are removed to form resonance, and therefore, plating liquor is more uniform, surface smoothness is improved, and integrity and aesthetics of the plated part are guaranteed.