30results about How to "Good surface roughness" patented technology

In a method of producing silicon blocks by cutting a silicon ingot by the use of a silicon ingot cutting slurry containing abrasive grains and an alkaline substance so as to provide the silicon blocks that can be produced into silicon wafers each having a thin thickness with reduced substrate damage at the time of producing a solar battery, the content of said alkaline substance is at least 3.5 mass % with respect to the mass of the entire liquid components of said slurry, and said slurry contains an organic amine of from 0.5 to 5.0 by a mass ratio with respect to water in the liquid components of said slurry. Said slurry is used at a pH of 12 or more and at a temperature of from 65 to 95 degrees C.

This invention discloses a method for using necking extension to get extension films of low dislocation density, which utilizes deposition, selective extension and thermal oxidation to prepare GeSi substrates of low dislocation density and channels of high migration rate and gets films of exremely low dislocation density on a silicon wafer meeting the requirement of MOS devices or luminescent devices.

A surface coated tool including a substrate, and stacked layers composed of two coating layers represented by the following general formula (1) on the substrate is provided. A first coating layer to be coated on the surface of the substrate, which has a thickness of 0.1 to 1 [mu]m, is composed of a granular crystal having a mean crystal diameter of 0.01 to 0.1[mu]m. A second coating layer to be coated on the surface of the first coating layer, which has a thickness of 0.5 to 5 [mu]m, is composed of columnar crystal grown in a direction perpendicular to the substrate, and the columnar crystal has a mean crystal width of 0.05 to 0.3[mu]m in a direction parallel to the substrate while a mean crystal width thereof is larger than the mean crystal diameter of the first coating layer. [Formula 3] M 1 - a Al a (C b N 1-b ) (1) wherein, M represents at least one metal element selected from the group consisting of the elements of Groups 4, 5 and 6 of the periodic table, Si and rare earth elements, ''a'' satisfies the relation of 0.25 a 0.75, and ''b'' satisfies the relation of 0 b 1.

A pair of sub-flank surfaces is formed at a vertex angle portion of an insert body having a substantially polygonal, plate-like shape, and between the sub flank surfaces, a vertex flank surface at a vertical angle portion is formed substantially in a protrusive, curved shape, and is smoothly connected to the sub-flank surfaces in a tangential direction. The vertex flank surface at the vertex angle portion is extended across the entire thickness of the insert body, and boundary lines, between the vertex flank surface at the vertex angle portion and a pair of minor cutting edges, are parallel to each other. A second curved ridge line, which is formed between (i) the flank surface and (ii) the rake surface, and a first curved ridge line, which is formed between (i) the flank surface and (ii) the seat surface, have approximately same shape.

The invention relates to a manufacturing technology of an air spring rubber stack, which comprises the pretreatment technology of a metal piece, the preparation technology of rubber material and the vulcanization technology. In the pretreatment technology of the metal piece, the pre-cleaning process step is added, so that grease on the surface of the metal piece can be removed better; the shot blasting process step can ensure better surface roughness of the metal piece, and can simultaneously improve the bonding force between an adhesive and a framework and the strength of a metal framework; the ultrasonic washing can further remove the grease on the surface of the metal framework and dust taken in during the shot blasting process, raise the temperature of ultrasonic washing liquor and prolong cleaning time appropriately, and further reach the better cleaning effect. The selection of parameters of the vulcanization technology can directly affect the matching between the adhesive and the rubber reaction speed and the formation of a cross bond between rubber and the adhesive, and products with good adhesive bonding effect can be obtained through the parameters selected by the invention.

The invention relates to the guider regulating the movement track of the molybdenum wire. It is a electrical spark wire cutting machine's guider. It features in the hollow cylindrical support base with notch at one side, surrounded by a limit structure with the shape like the Chinese character 'pin' connected by diamond, spring and micro tune bolt sequentially. It can increase the surface machining gross degree from 3.2 mu m to 2.5 mu m.

The invention discloses a high-frequency micro-amplitude vibration device applied to ultra-fast polishing of a large-caliber complex curved surface. The high-frequency micro-amplitude vibration devicecomprises a voice coil motor vibration platform capable of moving in two-dimensional direction and a flexible multi-layer polishing disc arranged on the voice coil motor vibration platform, wherein the flexible multi-layer polishing disc is composed of a rigid polishing bottom plate, a flexible polishing layer and a polishing section which are sequentially connected, and the flexible polishing layer adopts an elastic material with a deformation response time of tens of milliseconds to hundreds of milliseconds. By controlling the amplitude and the phase of a voice coil motor of each dimension,the movement of the specified amplitude and the designated direction of the polishing disc can be realized. According to the high-frequency micro-amplitude vibration device, and the surface roughnesscan be quickly improved under the premise of maintaining the surface shape error.

A polishing sheet, having polishing particles fixed to a base sheet in a single-layer formation by an adhesive agent so as to be mutually separated in the direction of their plane and having cutting edges exposed and arranged to be coplanar, is produced by forming on a provisional base sheet a film of a provisional adhesive agent of a thickness smaller than the average diameter of the polishing particles, dispersing the polishing particles onto the film of the provisional adhesive agent so as to contact the provisional base sheet, pressing the base sheet covered with the adhesive agent onto the polishing particles with the adhesive agent facing towards the polishing particles, hardening the pressed adhesive agent, and removing the provisional base sheet and the film of the provisional adhesive agent. The polishing particles are charged in a same polarity when dispersed.

The invention discloses a net-shaped taper sleeve self-compensating centrifugal expansion high-speed cutter handle. The handle body of the cutter handle is of an integral solid structure consisting of a front end handle body and a rear end handle body; the front end handle body and the rear end handle body are coaxial cylinders; the diameter of the front end handle body is smaller than that of the rear end handle body; a circle of groove is formed in the end surface of the rear end handle body around the connection part of the front end handle body, and a disc spring is arranged in the groove; a threaded groove is formed from the end surface of the front end handle body toward the rear handle handle body along the axis; a shaft shoulder is machined on the front end of the front end handle body and a fine pitch thread and a threaded tool withdrawal groove are formed in the front end handle body; a net-shaped taper sleeve sleeves the outer wall of the front end handle body; a fine pitch lock nut is arranged on the fine pitch thread of the front end handle body in front of the net-shaped taper sleeve; the front end and the rear end of the net-shaped taper sleeve are in contact with the fine pitch thread and the disc spring; a cylindrical clamping groove is formed in the end surface of the rear end handle body along the axis toward the inside; and a V-shaped tool changing groove is formed in the outer wall of the rear end handle body. The net-shaped taper sleeve self-compensating centrifugal expansion high-speed cutter handle has the advantages that the limiting speed is high; the dynamic balance performance is good; the rigid and the position precision are high; the strength is high; and the like.

The invention particularly relates to a reaming method and a tool thereof for small-diameter deep holes. The reaming method and the tool thereof for the small-diameter deep holes can solve the problem that the surface roughness and the straightness are difficult to guarantee when an existing gun-drill is used for reaming machining of the small-diameter deep holes. According to the reaming method for the small-diameter deep holes, the machining tool feeding technology specifically comprises the steps that a drill bit moves forwards by 0.08mm, then quickly withdraws by 3 mm, then quickly moves forwards by 2.99mm and then is fed by 0.08 mm, and the steps are circularly fed to the end of machining. According to the tool for the small-diameter deep holes, specifically, a tool bit of a gun-drill is sharpened at a certain angle, the included angles of an oil passing surface 1 and an oil passing inclined surface 7 is 20 degrees and 15 degrees respectively, the included angle between an inner tool edge clearance angle surface 2 and a main inclined surface 5 is 15 degrees, the included angle between a tool nose clearance angle surface 4 and a vertical surface is 25 degrees, and the included angle between a clearance angle surface 3 and an auxiliary inclined surface 6 is 20 degrees. The reaming method and the tool thereof for the small-diameter deep holes have the advantages that the deep holes with the high straightness and the good surface roughness can be machined, the efficiency is high, the cost is low, and the application range is wide.

The invention discloses a cold-drawn precision steel pipe which comprises three layers of structures, wherein an outer supporting pipe is arranged on the outermost layer, a hexagonal steel pipe, and used for supporting the whole cold-drawn precision steel pipe, and has a safety protection effect; a conveying pipeline is arranged on the innermost layer, and an inner wall alloy pipe and comprises alloy steel pipes; a filling layer is arranged between the outer pipe and the inner pipe and comprises dense plastic materials, and an arc-shaped groove is formed in the filling layer; foam shock absorption rings are arranged at the two end parts of the cold-drawn precision steel pipe, so that two steel pipes can be conveniently connected. The cold-drawn precision steel pipe has the benefits that the cold-drawn precision steel pipe is high in size precision, good in inner and outer surface roughness, high-pressure-resistant, leak-proof, high in precision, good in smoothness and free of cold-bending deformation at a joint.

The invention relates to the technical field of surface treatment, in particular to a surface treatment process of an HDI plate based on a chemical nickel-gold plating coating, and the surface treatment process comprises the steps of clamping, washing, drying and polishing a plate, a washing tank is arranged in a treatment box, and the surface of the HDI plate is washed by using a pickling solution, so that the surface of the HDI plate is subjected to micro-etching; the method comprises the following steps: removing rust scale, an oxidation film and other rust on the metal surface of a pre-plated printed circuit board, activating the metal surface of an HDI plate, adding chemical plating accelerators with different functions into a pickling solution, sufficiently adsorbing the accelerators on the inner walls of blind holes and through holes of the HDI plate before chemical plating, feeding the HDI plate into a chemical plating tank, and carrying out chemical plating on the inner walls of the blind holes and the through holes of the HDI plate after the HDI plate is fed into the chemical plating tank. As the concentration of the accelerator adsorbed in the blind hole is higher than that of the accelerator adsorbed on the plate surface, the growth speed of the chemical plating layer is obviously higher than that of the plate surface, so that a good metal plating layer is obtained, and the generation efficiency of the surface coating of the HDI plate can be effectively improved.

The invention relates to the field of light guide plates of display backlight units, and especially relates to a nickel alloy light guide plate cavity manufactured through using an LIGA technology. The cavity comprises a substrate, a photoresistive film coated on the substrate and an electroforming nickel layer electroform-deposited on the surface and the periphery of the photoresistive film, the photoresistive film is provided with a photoresistive pattern, and the electroforming nickel layer is provided with a plurality of uniform micropores; and the photoresistive pattern is consistent with the micropores in shape. According to the invention, light guide plates manufactured from the nickel alloy light guide plate cavity manufactured through using the LIGA technology have the advantages of high brightness, high uniformity, good surface roughness, realization of microscopic three-dimensional structure, and rapid production period; and a light cover design is utilized to design different patterns to manufacture micro lens (having arbitrary shapes, such as oval, long sector and the like) with different micro-structures, so different light guide effects are obtained.

The invention provides an inner-cooling component for a machine tool accessory. The inner-cooling component for the machine tool accessory comprises the machine tool accessory, an inner-cooling connecting hose, a cylinder and an inner-cooling tool. The machine tool accessory comprises a rotation shaft. The rotation shaft is installed in the machine tool accessory along the horizontal direction, and the tail end of the rotation shaft is extended to the exterior of the machine tool accessory and is connected with the cylinder. The middle part of the rotation shaft is provided with a through hole along the axial direction. The tail end of the rotation shaft is radially provided with two water injection holes communicated with the through hole. One end of the inner-cooling connecting hose is connected with a water discharging hole of a machine tool spindle, and the other end is communicated with the cylinder, so cutting fluid discharged from the water discharging hole of the machine tool spindle is fed into the water injection holes. The inner-cooling component is capable of providing the inner-cooling function for the machine tool accessory, the accessory machining can be realized by many high-performance tools and high-rotation-speed cutting tools, and the machining efficiency and machining quality of the accessory are improved.

The invention discloses an intelligent high-speed energy-saving linear cutting high-frequency pulse power supply. The intelligent high-speed energy-saving linear cutting high-frequency pulse power supply comprises a pulse generator, the control end of the pulse generator is electrically connected with a control circuit, the output end of the pulse generator is electrically connected with a power grid, and the power grid is electrically connected with a 12V direct current power supply. The 12V direct current power supply is electrically connected with a 5V direct current power supply and a 100Vdirect current power supply, the 5V direct current power supply is electrically connected with the input end of the pulse generator, the input end of the pulse generator is electrically connected with an input filter circuit through the 5V direct current power supply, and the input filter circuit is electrically connected with the power grid. The intelligent high-speed energy-saving linear cutting high-frequency pulse power supply is economical and practical, an output circuit of the intelligent high-speed energy-saving linear cutting high-frequency pulse power supply can output impulse waveforms with different effects, and a numerical control spark cutting machine tool is made to be low in loss, high in energy and high in working speed; and the pulse waveforms output by the output circuit are stable, so that the roughness of machined surfaces is greatly improved.

The invention relates to a preparation method of modified diamond abrasive particles, which comprises the following steps: placing diamond abrasive particles in heating equipment, adding carbide gas and catalytic gas at the temperature of 700-1500 DEG C, controlling the flow rates of the carbide gas and the catalytic gas at 5-100 L/min, reacting for 1-8 hours, and cooling to obtain the modified diamond abrasive particles. Wherein the catalytic gases are hydrogen and nitrogen; the carbide gas is olefin gas, the chemical formula of the olefin gas is CxHy, x is equal to 1-4, and y is equal to 2-10. The volume content of the nitrogen is 40-89%, the volume content of the hydrogen is 1-10%, and the volume content of the carbide gas is 10-50%. The surface area of the modified diamond abrasive particles obtained through the method can be increased by 20% or above, the surface roughness is good, grinding is facilitated, and meanwhile the holding force of the modified diamond abrasive particles and binding agents such as metal and ceramic can be improved. And the strength of the modified diamond abrasive particles is not reduced. In addition, the method is simple in process, easy to operate and relatively low in production cost.

In the first place, the characteristic frequency of a workpiece before machining and the one at after machining are input (Step S1). In the next place, a region between the characteristic vibration of a workpiece before machining and the one after machining is set in a Campbell diagram (Step S2). Furthermore, the vibration components of a machining tool during machining are input (Step S3). Subsequently, the vibration components of a machining tool during machining are set in the Campbell diagram (Step S4). Thereafter, with respect to the region between the characteristic vibration of a workpiece before machining and the one after machining, the Campbell diagram is used to determine the rotational speeds (operating condition) of the machining tool outside the ranges where the vibration components of the machining tool resonate (Step S5). In the last place, workpiece machining is executed on the basis of the rotational speeds (operating condition) of the machining tool (Step S6). For this reason, the machined surface roughness of the workpiece can be improved, and the machining cost can be reduced.

The invention provides a wire cut electrical discharge machining (WEDM) processing aluminium alloy technology improved method comprising the following steps: a, improving conducting block current input mode; b, reasonably adjusting linear cutting processing electric parameters; c, replacing novel cutting fluid. The technology improved method is simple and reasonable, can effectively solve fracture wire problem, obtains better processing surface roughness quality, improves processing efficiency, and ensures product quality requirements.