6791results about How to "Improve surface quality" patented technology

Al_xGa_yIn_zN, wherein 0≦x≦1, 0≦y≦1, 0≦z≦1, and x+y+z=1, characterized by a root mean square surface roughness of less than 1 nm in a 10×10 μm² area. The Al_xGa_yIn_zN may be in the form of a wafer, which is chemically mechanically polished (CMP) using a CMP slurry comprising abrasive particles, such as silica or alumina, and an acid or a base. High quality Al_xGa_yIn_zN wafers can be fabricated by steps including lapping, mechanical polishing, and reducing internal stress of said wafer by thermal annealing or chemical etching for further enhancement of its surface quality. CMP processing may be usefully employed to highlight crystal defects of an Al_xGa_yIn_zN wafer.

The invention provides a ceramic material for 3D (three-dimensional) light curing forming printing. The ceramic material is prepared from the following ingredients in percentage by weight: 25 to 85 weight percent of light curing resin and 15 to 75 weight percent of modified inorganic powder. The invention also further provides a preparation method and a use method of the ceramic material for 3D light curing forming printing. The ceramic material for 3D light curing forming printing provided by the invention is applicable to the preparation of a ceramic product by 3D light curing forming technologies such as the light curing laser fast forming and digital-based light processing projection curing forming. The defect of the current condition that the light curing forming technology in the prior art is not used for producing the ceramic product is overcome; the dimension precision of the obtained ceramic product is high; the 3D printing forming of various ceramic elements in complicated shapes can be realized; the ceramic material can be applied to aviation and aerospace industry, the medical field and the industrial field.

An RTM molding method comprising disposing a reinforcing fiber substrate in a cavity of a mold consisting of a plurality of dies, clamping the mold, and thereafter injecting resin to complete molding, characterized in that divided areas with respect to the surface direction of the reinforcing fiber substrate are assumed, each divided area is one in which injected resin expands over the entire surface in the area and can be substantially uniformly impregnated in the thickness direction of the substrate, and resin introducing paths are formed for respective assumed divided areas for introducing the injected resin into the respective divided areas; and an RTM molding device. When a relatively large molded product is to be molded, a molding step from resin injection to impregnating/curing can be implemented at high speed without generating a non-resin-flowing area, thereby enabling a high-quality molded product to be produced free from voids, etc., with a molding time shortened and production speed and volume increased.

The present invention relates to a method of producing thick-walled brushes, in particular toothbrushes, with a grip piece and a brush head supporting bristle filaments. In order to increase the productivity, the method mentioned at the start is further developed by the present invention in that a core produced in a first injection molding cycle is coated with a plastic component in at least one subsequent injection molding cycle so as to form a multi-layered grip piece.

A tempered glass of the present invention is a tempered glass having a compression stress layer in a surface thereof, the tempered glass comprising, as a glass composition in terms of mol %, 45 to 75% of SiO₂, 3 to 15% of Al₂O₃, 0 to 12% of Li₂O, 0.3 to 20% of Na₂O, 0 to 10% of K₂O, and 1 to 15% of MgO+CaO, and having a molar ratio (Al₂O₃+Na₂O+P₂O₅)/SiO₂ of 0.1 to 1, a molar ratio (B₂O₃+Na₂O)/SiO₂ of 0.1 to 1, a molar ratio P₂O₅/SiO₂ of 0 to 1, a molar ratio Al₂O₃/SiO₂ of 0.01 to 1, and a molar ratio Na₂O/Al₂O₃ of 0.1 to 5, characterized in that the surface or an end surface of the tempered glass is etched after tempering treatment.

The invention relates to a method for producing a wear-resisting steel plate. Steel comprises the following chemical ingredients in percentage by mass: 0.15 to 0.20 percent of C, 0.4 to 0.7 percent of Si, 0.7 to 1.50 percent of Mn, less than or equal to 0.020 percent of P, less than or equal to 0.010 percent of S, 0.020 to 0.10 percent of Ti, 0.0005 to 0.0020 percent of B, 0.010 to 0.020 percent of Nb and the balance of Fe and inevitable impurities. A production process for the steel comprises the following steps of: desulfurizing by molten iron, smelting by a converter, refining, casting continuously, rolling and performing quenching-carbon partition (Q-P) treatment. In the ingredients of the wear-resisting steel, a C-Si-Mn-Nb-Ti ingredient system and the Nb and Ti micro alloy treatment are adopted, the hardenability of the steel is improved by adding B, an appropriate heat treatment process is adopted to ensure that the steel plate has high plasticity and toughness, and the impact energy of the steel plate is improved by over one time; and the heat treatment is performed by a Q-P process, lath martensite and lath retained austenite (between 5 and 10 percent) are formed and 50 to100 nanometers of carbide complex tissue is precipitated, so that the tissue is fine and uniform, and the tenacity of the steel plate is high.

The invention relates to a method for the manufacture of a three-dimensional molding (29), wherein the molding (29) is generated from a solidifiable powder material by consecutively solidifying individual layers through the effect of radiation (27), while generating a new layer by exposing traces that are arranged adjacent to each other to radiation, wherein, in order to form an overhang region (47), a contour trace (49) is formed on a coherently solidified region and on a powder material (17) that has not solidified yet, the contour trace (49) is adjusted to an outer contour at least in the region of transition from the solidified region to the powder material (17) that has not solidified yet, and the at least one further contour trace (49′) adjusted to the outer contour is formed of non-solidified material (17) while comprising a high overlapping degree in relation to the previously formed contour trace (49).

The invention discloses a spraying liquid beam electrolytic-laser compound manufacturing method and device, which comprises the following steps: utilizing layer generating device to produce laser beam on the working piece, manufacturing hole, seam and groove, generating high-speed spraying liquid removing material with the same shaft of laser beam through spraying liquid beam device. The device contains layer, working piece assembling chuck, power and spraying liquid beam device, wherein the spraying liquid beam device concludes assembling seat of spraying device, insulating switching seat, cathode, focal lens, protective lens, insulating sleeve and sprayer.

A method of producing a flexographic printing plate, comprises:

a) inkjet printing a layer of flexographic material in a predetermined pattern onto a substrate;

b) partially curing at least part of the printed layer of flexographic material so as to immobilize it on the substrate; and

c) repeating steps (a) and (b) so as to print and partially cure one or more further layers of flexographic material in the predetermined pattern on the previous layer(s),

characterized by additionally curing one or more lower printed layers before or while printing one or more upper layers so as to reduce spreading of the lower printed layer(s).

A soft landing control system for a screeding device is operable to automatically lower a vibrating member of a screed head assembly into engagement with a concrete surface at a time and place where the vibrating member is not positioned over an overlap area of already screeded concrete. The vibrating member is automatically lowered onto newly placed concrete at or near the junction or cold-joint between the already screeded concrete and the area of newly placed concrete, so as to avoid depressions in the already placed concrete. Optionally, the soft landing control system may include a timing device and may lower the vibrating member after a period of time following an activating event. Optionally, the control system may detect when the vibrating device is positioned at or near the newly placed concrete and may lower the vibrating member in response to such detection.

The invention relates to a cold-rolled sheet rolling emulsified oil containing a modified nano copper and preparation method thereof, which belong to the field of organic chemistry. The emulsified oil comprises the following components, in percentage by weight: 54-80% of a base oil, 15-32% of an oiliness agent, 0.1-1% of a modified nano copper particle, 2-4% of an extreme pressure agent, 0.5-2% of an anti-rusting agent, 2-6% of an emulsifier, 0.4-1% of an anti-oxidant, 0.03-0.1% of an anti-foaming agent, and 0.2-0.6% of an anti-mildew agent. The cold-rolled sheet rolling emulsified oil containing the modified nano copper is diluted with water into a 2-6 wt% emulsion, and the emulsion is directly used in the cold rolling process of the strip steel and has very good lubrication, cleaning property of the rolling mill and annealing cleaning property, after annealing, the steel plate not subjected to degreasing has a clean surface without pollutants, so as to satisfy rolling production requirement under high pressure at high speed.

A method of using thin plate adobe continuous casting and rolling to producing thin band steel coil is provided, which belongs to rolling metal at once after continuous casting, in particular relating to thin standard band steel production method. The invention is characterized in that: a conticaster, a swing shear, a roller-hearth type heating furnace, a scale breaker, a vertical miller, 7 mill groups, laminar flow cooling device and reeling machine are connected to a CSP produce line, the produce line adopts reasonable temperature system, rolling equipment, rolling way and combining with cooling after rolling, the molten steel after continuous casting is a casting adobe of 50 to 70mm thick and 900 to 1300 wide, after cutting, heating, scale breaking, proceed continuous rolling to form a thin band of 1.2 to 1.5mm thick and 900 to 1300 wide, then after cooling to reel steel coil. The production flow is short, the equipment is few, the investment is less and the running expense is low; The technics and equipment is reasonable and high efficient, double locomotive and double flow casting, heating by two furnaces, seven rolling machines roll continuously, the production is smooth and saves energy with high production efficiency; the product performance is even and stable, the board shape is regular with high accuracy and good surface quality.

A method for producing a tubular bar, more particularly a stabilizer bar, is provided. The method comprises providing a tubular bar of desired size having an outer and inner surface, heating the bar to an elevated temperature, quenching the bar by application of a cooling fluid to the surfaces of the bar, and forming the tube to a desired shape without annealing. The method further provides for the composition of a high-strength, high formability carbon steel alloy to be used in conjunction with the method. Advantageously, the bar is formable without thermal processing subsequent to quenching. In this fashion, metal tubular bars, such as stabilizer bars, may be formed at reduced cost.

A polymeric composition to be used in producing foam in which the polymeric composition comprises conventional linear polypropylene, high melt strength polypropylene and a rheology modifier resin. The conventional linear polypropylene is in an amount of from about 1 to 25 weight percent of the polymeric composition. The high melt strength polypropylene is in the amount of from about 51 to 85 weight percent of the polymeric composition. The rheology modifier resin is in the amount of from 5 to about 30 weight percent of the polymeric composition. The conventional linear polypropylene may be offgrade virgin polypropylene or recycled polypropylene from post-industrial or post-consumer sources. The rheology modifier resin is a member of the group of styrene-olefin copolymers.

The invention discloses a small high-speed five-axis linkage machine tool, which comprises a foundation structure, a spindle box component and a cradle type worktable. The spindle box component is supported on the foundation structure, and a crossbeam with a frame-shaped structure is arranged on two upright columns to form a bridge-type portal structure. The torque bearing capacity of the crossbeam is improved, the small high-speed five-axis linkage machine tool has all advantages of a five-axis linkage machine tool in the prior art, and carries identical machining reacting force, the volume of a structural part is reduced, and the weight of the structural part is greatly lightened; a spindle box is positioned between two transverse rods of the frame-shaped crossbeam, overturning moment is eliminated, and the stability of the machine tool can be guaranteed; in addition, sizes of various components are greatly reduced on the premise of identical machining capacity, and the stroke of the machine tool can be large in the design; and by the aid of the structure, the machining precision is greatly improved, the machining range is greatly expanded, better dynamic characteristics and higher feeding speed and higher cutting speed can be realized, cutting and machining time is greatly shortened, better surface machining quality is obtained, and machining efficiency is enhanced.

The invention discloses a method for preparing seamless steel tubes made of martensite precipitation hardening stainless steel, which comprises the following steps of billets, peeling, blanking, heating, hot punching, cooling, finishing, acid cleaning, lubricating, degreasing, heat treatment, straightening, tube cutting, acid cleaning, inspection, and packaging and warehousing. Compared with the prior art, the method has the following advantages that: pierced billets after hot punching are cooled in a pile so as to reduce working procedures and cost; the intermediate heat treatment adopts solution treatment, has short time and high efficiency, and improves surface quality; the tubes all adopt cold rolling process to improve yield; and vacuum aging treatment is adopted to improve the comprehensive mechanical property, the finished product inspection qualified rate reach 95 percent, and the yield from the billets to the finished products reach 51.31 percent.

The invention discloses a method for producing a voltage-bearing aluminum alloy tank body of an ultra-high voltage switch by a V-process, comprising the following steps: model making, thin film heating, thin film shaping (film absorbing), coating spraying, sandbox placing, ram-jolting by adding sand , back film covering, film loosening, core setting, box folding, pouring, removing box and shaking out. After the process is improved, an intermediate frequency furnace is utilized to melt and a crucible heat preserving furnace is utilized to modify and refine. When melting in the intermediate frequency furnace, microelements such as tombarthite and the like are replenished and a new non-stirring melting and refining technology is adopted so as to reduce oxide inclusion content in alloy liquid. Modification and refining treatment in the crucible heat preserving furnace ensures high purity degree and high component precision of aluminum liquid, and using pure aluminum alloy liquid can increase the ratio of acquiring qualified pressure-proof tank body foundry products.

The invention relates to electrostatic spraying anti-rust oil and a production method thereof, which essentially solves the problems of the prior art that the lubricating property of the anti-rust oil is poor; and interlayer sliding is caused due to larger tension during the reeling process of the steel plate, resulting in steel plate scratch and having impact on the surface quality of the steel plate. The electrostatic spraying anti-rust oil commendably solves the problems by using the technical proposal comprising components of weight percentages as follows: a) 5 to 30 percent of anti-rust agent, b) 0.1 to 5 percent of surface activator, c) 0.1 to 15 percent of anti-friction composition, d) 0.1 to 5.0 percent of antioxidant and e) 50 to 90 percent of base oil, and can be used for the electrostatic spraying rust resistance of the cold-rolled carbon steel plate, galvanized plate and aluminized zinc silicon plate of the steel enterprises.

The invention discloses a rare earth alloy powder-modified Ti(C,N)-based metal ceramic and a preparation method of the metal ceramic. The metal ceramic comprises Co and Ni or at least two of components selected from Co, Ni as well as Fe as a bonding phase, Ti(C,N) as a basic hard phase and optionally at least one of metallic carbides; and a rare earth alloy powder modifier 0.1-3wt% of the total mass of the metal ceramic. The preparation method comprises treating a raw material through a wet-grinding and mixing process, a die-forming process, a vacuum-degreasing process and a low-pressure sintering process to prepare the rare earth alloy powder-modified Ti(C,N)-based metal ceramic. On the premise of keeping high hardness and high wear resistance, the Ti(C,N)-based metal ceramic prepared according to the invention has excellent comprehensive performance, can be greatly improved in strength and tenacity and can also be widely applied to various cutting tools and wear-resistant parts.