1742results about How to "Reduce scratches" patented technology

The present invention provides a scratch protecting layer comprising a metal, metal alloy, metal compound or an intermetallic layer deposited on an air contacting surface. The scratch protecting layer is typically from 1 to 3 nanometers thick and not optically absorbing after oxidation occurs. This layer is initially deposited in a primarily unoxidized or un-nitrided state. Full oxidation of the metal, metal alloy, metal compound or intermetallic layer occurs within several days after exposure to air. The scratch protection layer can be 2 to 5 nanometers thick if the layer is exposed to a plasma, electrical discharge or ion beam comprising a reactive gas such as oxygen or nitrogen.

The invention discloses a ball flat iron production technique, comprising steps of billet, heating, symmetrical rolling, straightening and dissection. The invention is characterized in that the dissection process is carried out after the processes of symmetric rolling and straightening; hole shapes in all the passages of a rolling mill are constituted by two ball flat iron hole shapes which are symmetrically identical. By adopting the technique of symmetric rolling, the invention solves the problems that existing large and medium rolling mills can not produce small ball flat irons with symmetrical rolling and dissection technology. The invention has the advantages of the small size fluctuation of profiles when producing, particularly the small size fluctuation of width, thickness, ball filling and the lower arc of the ball flat iron, rollers subject to uniform forces, easy control in rolling process, greatly reducing the scraping, the rolling mark and the waves of the product by 50% to 70%, improving the quality of the product, enlarging the types of rolled products, leading large profiled bar rolling mill to produce small ball flat iron, enlarging the profile of the billet, large corresponding compression ratio, improving the comprehensive performance of the products, etc.

The invention discloses a preparation method of a large-size aluminum alloy ingot, relating to a preparation method of aluminum alloy ingots, and the provided preparation method of a large-size aluminum alloy ingot solves the problem of easy cracking during preparing the large-size aluminum alloy ingots by the traditional aluminum alloy ingot preparation method. The method comprises the following steps of: spreading and scattering a NO. flux at the bottom of a smelting furnace; adding aluminum ingots, electrolytic copper, zinc ingots, aluminum-silicon intermediate alloy, aluminum-iron intermediate alloy, aluminum-manganese intermediate alloy, aluminum-chromium intermediate alloy and aluminum-titanium intermediate alloy into the smelting furnace and spreading and scattering a covering agent; heating to ensure that the materials are smelted, sequentially adding a zirconium composite salt and magnesium ingots as well as smelting and refining to obtain an aluminum alloy melt; filtering the aluminum alloy melt and then pouring into a crystallizer; and finally, obtaining the large-size aluminum alloy ingot through casting. The thickness of the ingot prepared by using the method is 500-600mm, the width is 1,600mm, and the length is 1,500-2,500mm. The ingot has no cracks, good surface quality and uniform internal grains, and the yield is not smaller than 65 percent.

The invention discloses a dry film lubricant used for metal parts, which comprises the following components in percentage by weight: 10-55% of soli lubricant, 4-10% of wear-resistant additive, 0.2-5% of dispersant, 2-6% of antioxidant, 0.5-2.5% of magnetic additive and 35-80% of adhesive base body. Compared with the prior art, the dry film lubricant has high wear-resistant performance and low scratch on friction surfaces. The dry film lubricant can be applied in the permanent lubrication of various mechanical metal parts, the initial running-in of pistons, cams, cylinders and like, the repairing of the parts of railway vehicles, aircrafts, ships and like, the fretting wear protection of steel rope shock absorber, mine elevator and bridge steel rope and the like.

The invention relates to the technical field of computer vision recognition processing and provides an educational toy suite. The educational toy suite comprises a support, a helmet detector and a base plate, the support is installed on the base plate, and the helmet detector is installed on the support; a first groove is formed in the upper portion of the base plate; the bottom of the support is provided with a protrusion, the protrusion is installed in the first groove, a second groove and a third groove are formed in the top of the support, and the second groove is used for storing a tablet computer; the helmet detector is installed in the third groove. By means of the educational toy suite, the image acquisition scope of a camera of the tablet computer is expanded, the visual angle is enlarged, great interactivity is achieved, game experience is more vivid, the educational toy suite is helpful for alleviating asthenopia, harm to eyes is lowered, operational ability of children is improved, the children are promoted to make progress continuously, intelligence is developed, enjoyment is improved, the educational toy suite is more convenient to carry, move, install and detach, the cost is saved, and maintenance is facilitated.

The invention provides a stereo garage intelligent transfer carrying system and a method thereof, and relates to the technical field of stereo garage signal and system design. The system and the method aim at solving the technical problems of the existing stereo garage that the waiting time during car storage or car taking is long; cars to be stored or taken easily generate collision and scratching, and the like. The stereo garage intelligent transfer carrying system mainly comprises a central control system, a server, a user terminal, a carrier and a buffer exchange system, wherein the buffer exchange system comprises a buffer exchange region, a camera and a geomagnetic coil; the buffer exchange region is used for transferring the cars to be stored or taken; and the camera and the geomagnetic coil are arranged in the buffer exchange region. The system and the method are used for designing stereo garage signals and systems.

A polishing technique wherein scratches, peeling, dishing and erosion are suppressed, a complex cleaning process and slurry supply/processing equipment are not required, and the cost of consumable items such as slurries and polishing pads is reduced A metal film formed on an insulating film comprising a groove is polished with a polishing solution containing an oxidizer and a substance which renders oxides water-soluble, but not containing a polishing abrasive.

The invention discloses a capacitive touch screen. A conductive groove is arranged in the surface of the touch screen, scratching of conductive materials in the use process of the capacitive touch screen is reduced, due to the groove structure, covering areas of the conductive materials are reduced, resistance is reduced, and production cost is reduced.

A chemical mechanical polishing pad used for chemical mechanical polishing comprises a polishing surface, a non-polishing surface that is provided opposite to the polishing surface, a side surface that connects an outer edge of the polishing surface and an outer edge of the non-polishing surface, and a plurality of grooves formed in the polishing surface. The side surface has a slope surface that is connected to the polishing surface, and a depth of the grooves is equal to or smaller than a height of the slope surface.

The invention discloses an alternated plate feeding device, which comprises a conveyor belt, at least two plate clamping mechanisms and a slide rail, wherein the conveyor belt comprises a plurality of working sections arranged in parallel, and at least two of all the working sections have opposite conveying directions; the plate clamping mechanisms are fixedly connected to different working sections; and the slide rail is used for bearing reciprocating motion of the plate clamping mechanisms. The alternated plate feeding device does not slip during clamping; and the feeding distance can be conveniently calculated through the conveying distance of the conveyor belt, so that the feeding precision is greatly promoted. In the optimal technical scheme, a first plate clamping mechanism and a second plate clamping mechanism are adopted, so that idle travel is avoided in the feeding process, uninterrupted feeding is realized, and the feeding efficiency is greatly improved; and only one clamping part is required in one feeding stroke, so that the surface of a material is scratched little. The device has the advantages of convenience in control, high feeding precision, little surface scratch, high feeding efficiency and the like.

A chemical mechanical polishing aqueous dispersion includes (A) abrasive grains having a pore volume of 0.14 ml/g or more, and (B) a dispersion medium.

A solid product formed by polymerizing a urethane prepolymer in the presence of a curative has a Bashore rebound that is less than about 38%. Preferably, the urethane prepolymer is an aliphatic isocyanate polyether prepolymer and the curative includes an aromatic diamine and a triol. To form a microcellular polyurethane material, the urethane prepolymer is frothed with inert gas, in the presence of a surfactant, then cured. The polyurethane can by employed to form highly damping CMP pads that have low rebound and can dissipate irregular energy and stabilize polishing to yield improved uniformity and less dishing.

The invention discloses a vehicle communication method, a vehicle communication device and a vehicle communication system, and belongs to the field of intelligent transportation. The method comprises the steps of receiving a wireless radio message sent by a first terminal corresponding to a first vehicle, acquiring a first geographical location and first driving data of the first vehicle in the wireless radio message, generating vehicle warning information according to the first geographical location and the first driving data of the first vehicle, and displaying the vehicle warning information to a second vehicle. The problem that the drivers of vehicles around cannot get the driving intention of the driver of the current vehicle in time under the condition that the driver forgets to use the signal lamps of the vehicle or that the driver has no time to use the signal lamps under emergency or that the vision is poor in a rainy, snowy, frosty or foggy environment or that the signal lamps are damaged is solved. Therefore, the drivers of vehicles around cannot get the driving intention of the driver of the current vehicle in time, and the occurrence of rear-end collision, scratch and accidents is reduced.

The invention discloses a machining control method for an aero-engine fuel nozzle part. A turn-mill combination numerical control machine tool is adopted for carrying out one-time clamping on a bar, and machining in all procedures is carried out; the bar is clamped, the end face and the outer circle face of the bar are turned, a spherical inner cavity of a fuel nozzle is drilled in the side face of the bar, and a through hole is drilled in the center of the spherical inner cavity to form a nozzle; the outer circle face of the machined bar is clamped, residual materials on the bar are cut off, and the bar is turned over; the outer circle face of the turned-over bar is clamped, the end face of the nozzle end of the bar is machined, and the outer circle of the nozzle end is machined; and burrs are removed, and the fuel nozzle part is obtained. The rigidity of a tool is increased through the eccentric structure of the tool, and the cost of the tool is reduced. The reverse boring technology is adopted, chip discharging is facilitated, pulling and scratching caused by scrap iron to an oil spray hole are reduced, and it is guaranteed that the flow test performance parameters of the nozzle are qualified. The machining control method is suitable for machining control over nozzle parts of various aero-engines and auxiliary power device engines.

The invention discloses whitening toothpaste suitable for evening and combined whitening toothpaste suitable for morning and evening. The combined whitening toothpaste suitable for the morning and the evening is composed of whitening toothpaste suitable for morning and the whitening toothpaste suitable for the evening; and the toothpaste suitable for cleaning in the evening comprises a moisturizer, a rubbing agent, a thickening agent, pyrophosphate, phytate, a poly(vinyl methylether)/malaic anhydride copolymer and zinc citrate. According to different oral cavity environments in the morning and the evening, different antibacterial factors are added; and an organic decontamination agent of the phytate is added into the toothpaste suitable for the morning and composite active factors of PVM/MA (Poly(Vinyl Methylether)/Malaic Anhydride) and the zinc citrate are added into the toothpaste suitable for the evening, so as to achieve the effects of simultaneously resisting bacteria, removing dental plaques and whitening at day and night. Meanwhile, silicon dioxide is prepared to replace one part of calcium carbonate, so that the scratches of tooth enamels, caused by the rubbing agent, are reduced while the effects of decontaminating and whitening are achieved.

There are provided a lens sheet for a screen, which is highly stable by virtue of a reduced tendency toward warping, lifting and the like of the lens caused by external humidity and, at the same time, has a suppressed tendency toward friction between lenses during transport as a screen, and a resin composition for constituting the lens sheet. The lens sheet is used in combination with other lens sheet and comprises one or at least two layers. When the layer in contact with the above other lens is formed of a thermoplastic resin, the universal hardness of the thermoplastic resin composition is brought to a range of 31.0 to 42.0 N/mm².

The invention discloses coating equipment for tube-type PERC solar cells. The coating equipment comprises a wafer loading region, a furnace body, a gas cabinet, a vacuum system, a heating system, a control system and a graphite boat; the gas cabinet is provided with a first gas pipeline for introducing silane, a second gas pipeline for introducing ammonia, a third gas pipeline for introducing trimethylaluminum, a fourth gas pipeline for introducing laughing gas and a fifth gas pipeline for introducing methane; the graphite boat is used for loading or unloading a silicon wafer; before being used or after being coated many times, the graphite boat needs to be subjected to pretreatment comprising the steps: drying the graphite boat; and coating at least one layer of silicon carbide film on the surface of the dried graphite boat. Correspondingly, the invention further discloses a coating method for tube-type PERC solar cells. By using the coating equipment and method, the pretreatment step of the graphite boat is simplified, the consumption of the silicon wafer is reduced, the silicon wafer is prevented from being scratched, and the EL yield of the cells is increased.

The invention provides a method for controlling the scuffing of the polishing surface of a silicon chip. The method comprises the following steps: the silicon chips are pasted on polishing discs of a polishing machine; the polishing discs are fixed on a polishing head of the polishing machine; the pressure of the polishing machine and the rotational speeds of the upper polishing disc and the lower polishing disc are controlled; and polishing solution is injected to the polishing discs and between the silicon chips. The method has the improved aspects: the polishing solution comprises a grinding material, a penetrating agent, a lubricant, a PH regulator, a surfactant, a chelon and deionized water; the pressure of the polishing machine is controlled below 50 kilopascal; the rotational speed of the upper polishing disc is controlled below 60 revolutions per minute; and the rotational speed of the lower polishing disc is controlled below 60 revolutions per minute. The method can effectively reduce the scuffing of the surface of the polishing silicon chip, simultaneously ensure high removing velocity of polishing the silicon chip, has low production cost and is suitable for the requirement of scale production.

The invention discloses a wear-resistant antifouling glazed brick glaze and a preparation method thereof. The wear-resistant antifouling glazed brick glaze comprises raw glaze powder, No.1 frit powderand No.2 frit powder, wherein the raw glaze powder comprises the following raw materials in percentage by weight: 8-12% of kaolin, 10-18% of calcined kaolin, 12-20% of quartz, 12-20% of dolomite, 8-15% of calcined talc, 1-5% of wollastonite, 8-15% of nepheline, 5-10% of zinc oxide, 0-5% of calcite and 6-12% of strontium carbonate, wherein the No.1 frit powder is prepared from kaolin, calcined talc and fluorite, and the No.2 frit powder is prepared from zinc oxide, strontium carbonate and borax. The wear-resistant antifouling glazed brick glaze contains a large number of cordierite microcrystals, and the cordierite microcrystals have the characteristics of transparency, high hardness and the like, so that the wear resistance and the antiskid effect of a glaze layer can be enhanced, and thecontradiction between the transparency and the wear resistance of the glaze layer can be solved.