1269results about How to "Avoid uniformity" patented technology

The invention belongs to the field of titanium-based alloys, and particularly relates to a novel heat-resisting titanium alloy and a processing and manufacturing method and application thereof. The processing and manufacturing method comprises the composition elements of alloy components, smelting, heat processing, heat treatment and the like, wherein the alloy components are as follows (in percentage by weight): 5.4%-6.3% of Al, 3.0%-5.0% of Sn, 2.5%-6.4% of Zr, 0.0%-0.96% of Mo, 0.25%-0.5% of Si, 0.2%-0.5% of Nb, 0.3%-3.4% of Ta, 0.2%-1.6% of W, 0.0%-0.07% of C, less than or equal to 0.17% of O, less than or equal to 0.03% of Fe and the balance of Ti and inevitable impurity elements. The novel heat-resisting titanium alloy disclosed by the invention can obtain different matching of tensile strength, plasticity, permanence, creep strength and heat stability through the combination of different heat processing process and heat treatment processes, can be used for manufacturing parts, namely blades, coil assemblies and the like which are positioned on the high-temperature parts of an advanced aircraft engine, is used for a long time within a range of 600-650 DEG C, can also be used for manufacturing high temperature-resistant structural members, namely aerospace craft skin and the like, is used for a short time at about 700 DEG C and can be used as a material and the like used for high temperature-resistant corrosion-resistant valves of an automobile and a boiler.

It relates to a heat-generating composition having such dispersion stability that withstands continuous molding, and has excellent drainage property, excellent heat-generating characteristics, excellent molding property and excellent shape retaining property, without becoming viscous, and relates to a heat-generating body using the same and a process for producing the heat-generating body. It contains, as essential components, a heat-generating substance generating heat upon reaction with oxygen, a carbon component, an oxidation promoter and water, characterized in that the composition further contains a water separation-preventing stabilizer in a proportion of from 0.001 to 0.25 part by mass per 100 parts by mass of the heat-generating composition, and has a water mobility value of from 7 to 40 and a separation degree of from 0 to 30.

The invention discloses high-manganese high-nitrogen low-nickel stainless steel plate blank continuous casting crystallizer covering slag which comprises the following components in percentage by weight: 54-57% of wollastonite, 9-13% of fluorite, 9-13% of sodium carbonate, 0-1% of lithium carbonate, 5-7% of glass dust, 8-12% of vanadine soil, 2.5-2.7% of soot carbon and 3-3.5% of graphite, and comprises the chemical components in percentage by weight: 31.9-34.9% of calcium oxide, 32.1-35.1% of silicon dioxide, 7.3-8.3% of aluminium oxide, 0.5-1.5% of magnesium oxide, 0.5-1.4% of iron sesquioxide, 4.4-6.4% of fluorion, 6.5-7.5% of sodium oxide, 0-0.39% of lithium oxide, 4.5-6.0% of fixed carbon and 4-7% of gas volatile matters. The alkalinity of the covering slag, namely the ratio of CaO to SiO2, is 0.91 to 1.00, the melting point of the covering slag is 1100 DEG C to 1160 DEG C, and the viscosity of the covering slag is 0.3 to 0.6 Pa.s at 1300 DEG C. The invention can solve the problems of easy crusting, slag entrainment, slag inclusion, slag sticking on casting blank surfaces, bubbles under skins, cracks, deep chatter mark, felting, bleed-out, and the like of the covering slag in the crystallizer during high-manganese high-nitrogen low-nickel stainless steel plate blank continuous casting, and has the advantages of uniform and stable slagging in the crystallizer, good casting blank quality, difficult felting and bleed-out, and the like.

The invention discloses a novel energy storage device synchronously provided with characteristics of a super capacitor and a lithium ion battery, and a method for producing the same. The invention has the following steps that: a lithium ion battery material and a super capacitor electrode material are separately prepared into pastes, and are alternatively coated to produce a super capacitor battery electrode plate; or a lithium ion battery electrode plate and a super capacitor electrode plate are respectively produced and are wound, then a lithium ion battery roll core and a super capacitor roll core are connected in parallel to form a super capacitor battery roll core cluster, then the super capacitor battery roll core cluster is placed into a battery case and welded, the drying and dehydration are performed, electrolyte is injected, and the novel energy storage device with high energy density and high power density, namely a super capacitor battery is obtained through charge and discharge activation.

The invention relates to an automatic grinder for an optical fiber ceramic insert core and an automatic grinding method. The grinder comprises a stander, a power system arranged on the stander, a grinding system extended out of the stander and driven by the power system, a lifting system arranged on the stand, a pressure system driven by the lifting system to move up and down and a control system, wherein the pressure system and the grinding system are arranged oppositely. The automatic grinding method is as follows: an optical fiber ceramic insert core to be processed is arranged on the grinding system, and the lifting system is controlled to drive the pressure system to compress the fiber ceramic insert core to be processed; the grinding system begins working to grind the lower end face of the fiber ceramic insert core to be processed; and through monitoring pressure change of the pressure system, the control system controls ascending or descending of the lifting system according to the pressure change and/or change of grinding time, to further compress or loosen the optical fiber ceramic insert core, so as to avoid defects of instability and unevenness brought by manual operation. The automatic grinding method has the advantages of accurate control, high precision, safety and reliability.

A flux cored aluminium ring for the butt connection between two aluminium or Al-alloy tubers by soldering is composed of the shell made of Al-Si alloy foil and the core made of Al-Si alloy wire and alloy powder. Said Al-Si alloy foil (or wire) contains Al (86.5-97 Wt %), Si (3-13), Sr (0.01-0.3) and La (0.01-0.2). Said alloy powder consists of KalF4-K3AlF6 eutectic and Si powder. Its preparing steps are smelting Al-Si alloy ingot, preparing Al-Si alloy band and wire, preparing their foil and wire, grinding alloy powder, making core wire, and making flux cored ring.

The invention discloses a forging method for high temperature resistance titanium alloy large-size bars used for engines. The method comprises following steps: firstly, performing three-heating cogging and forging on ingot casting then performing multi-heating isothermal reforging on the forging stock at two-phase region; Finally, heating at 60 DEG C to 80 DEG C under phase transition point, , to obtain WSTi64311SC titanium alloy bars. According to the method of the invention, octagonal forging is carried out on the forging process of each heating of WSTi64311SC titanium alloy bars so as to avoid non-uniform deformation or dead zones; blank material is wrapped by asbestos so as to avoid cracks due to temperature reduction in the blank material. Besides, three-heating cogging is carried out above the phase transition point so as to guarantee uniform organization of the blank materials; the large size WSTi64311SC titanium alloy bars having uniform and blurred macrostructure and equiaxial and fine microstructure are obtained.

The invention is a lithium battery anode active matter, and anode dressing and the preparing method thereof. And the anode active matter comprises trinary material LiNixCoyMn1-x-yO2 and lithium cobaltate; the anode dressing comprises anode active matter, graphite conductive agent, charcoal black conductive agent, and adhesive; and the preparing method comprises: 1. ball-milling: a. ball-milling the trinary material, lithium cobaltate and graphite conductive agent in proportion; b. after a, adding the charcoal black conductive agent into ball-mill tank in proportion; and blending: a. taking the adhesive in proportion and blending with organic solvent, and when blending until no bubbles, stilling and serving; b. adding mixed material and other additives to colloid and blending thickly; and c. filtering for coating.

There is provided a method of tire manufacturing a tire in which preset-beads each preformed by mounting a bead filler on a bead core are disposed radially outward of a carcass band and both side portions of the carcass band are turned around the preset beads to build the tire. The method eliminates a need to bold the considerable intermediate stocks and does not deteriorate the tire uniformity due to the unevenness of the preset bead in the circumference direction. There are also provided an apparatus of forming a preset bead used therefore and a system of forming a preset bead. In the method of manufacturing a tire in which preset-beads each preformed by mounting a bead filler on a bead core are disposed radially outward of a carcass band and both side portions of the carcass band are turned around the preset beads to build the tire, the preset bead is formed by winding and laminating a ribbon-shaped filler rubber 5 radially outward of the bead core 10 over several laps.

Disclosed is a secondary battery of an improved lead structure including an electrode assembly including a cathode plate having a cathode tab, an anode plate having an anode tab, and a separator stacked in an alternate manner, a battery casing to receive the electrode assembly, a cathode lead electrically connected to the cathode tab, and an anode lead electrically connected to the anode tab, wherein at least one electrode tab of the cathode tab and the anode tab is electrically connected to the corresponding electrode lead at a plurality of joints and the number of the electrode leads is smaller than the number of the joints between the electrode tab and the electrode lead.

The invention relates to a preparation method of a ceramic-modified lithium-ion battery diaphragm. The preparation method is characterized by particularly comprising the following steps: (A) coating a polymer porous diaphragm with slurry; (B) treating ceramic particles by adopting an active material; (C) uniformly distributing ceramic obtained in the step (B) on the porous polymer diaphragm coated with the slurry in the step (A); and (D) carrying out hot pressing on the diaphragm obtained in the step (C) to obtain a product. The preparation method disclosed by the invention fundamentally solves the problem that ceramic components are non-uniformly dispersed in the preparation process of liquid ceramic slurry, by using the method, a surface active agent is prevented from being adopted for promoting the uniform dispersion of the ceramics, the cost is saved, the dimensional stability and the mechanical property of the diaphragm can be greatly enhanced, and the method can be applied to a lithium-ion battery, a fuel cell, a lead-acid battery, a supercapacitor and the like.

The invention provides a polymer/graphene aerogel composite foam material which is prepared from graphene aerogel and a thermoplastic polymer, wherein the graphene aerogel serves as a framework, the thermoplastic polymer is attached to the three-dimensional net structures of the graphene aerogel, and foam holes with closed pore structures are formed in the thermoplastic polymer. The composite foammaterial has mutually communicated three-dimensional net structures, and the content of the graphene aerogel in the composite foam material is 0.5%-10%. The invention also provides a preparation method of the composite foam material. The invention provides a new idea for solving the problem of agglomeration of graphene in polymer matrix materials.

A method for identifying iris of human eye includes detecting four boundary points of pupil and accurately positioning pupil centre, detecting four outer boundary point of its and confirming iris centre, expanding eye image in 360 degree around iris center to be rectangle for searching pupil boundary, carrying out topological conversion to realize iris image noralization.

The invention discloses a phase-change energy-storing fiber. The phase-change energy-storing fiber is of a skin-core structure which comprises a skin layer and a core layer, wherein a skin layer raw material is a thermoplastic polymer; and a core layer raw material is a mixture of the thermoplastic polymer, clay mineral powder and a phase-change material. A preparation method of the phase-change energy-storing fiber comprises the following steps: (1) weighing 2-20 parts of the phase-change material and 5-20 parts of the clay mineral powder in parts by weight, uniformly mixing the weighed phase-change material and clay mineral powder by virtue of ultrasonic oscillation under a vacuum condition, putting the mixture into a vacuum oven so as to obtain a composite phase-change material, and uniformly mixing 60-90 parts of thermoplastic polymer with the prepared composite phase-change material, so as to obtain the core layer raw material; and (2) carrying out melt spinning on the thermoplastic polymer, as skin layer raw material, and the core layer raw material by virtue of a compound spinning machine, so as to obtain the phase-change energy-storing fiber being of the skin-core structure. The preparation method is simple and low in cost, and the prepared phase-change energy-storing fiber has large phase-change enthalpy and a uniform temperature regulation effect.

The invention discloses a 3D printer with the hook face processing characteristic and belongs to the technical field of digital processing. The 3D printer with the hook face processing characteristic solves the gravity limitation problem caused by a cantilever and a hollow structure in workpiece design engineering, can achieve hook face 3D printing and structurally comprises a fixing framework, a work platform, a parallel connection rod movement sprayer, stepping motors and a synchronous belt. The work platform is inclined through the stepping motors and the synchronous belt. According to the 3D printer, by means of inclination of a machine base platform and movement of a nozzle on a 3D printer body, workpiece cantilever printed pieces and cavity hook face printed pieces can be printed without supporting matter. The 3D printer with the hook face processing characteristic can perform direct printing on a hollow polyhedron, a multilayer cellular structure workpiece and a hook surface workpiece, and the 3D printing efficiency is improved.

The invention belongs to the technical field of intelligent processing and manufacturing, and particularly discloses an integrated active-passive compliant one-dimensional variable force grinding andpolishing device and a control method. The integrated active-passive compliant one-dimensional variable force grinding and polishing device comprises a linear module servo motion platform, a mountingflange, a limiting plate, a position and orientation sensor, a speed-adjustable compliant grinding and polishing mechanism and a controller, and the linear module servo motion platform is used for driving the grinding and polishing mechanism to perform linear motion; the mounting flange and the limiting plate are mounted on a base of the linear module servo motion platform, and the position and orientation sensor and the speed-adjustable compliant grinding and polishing mechanism are installed on the limiting plate; and the position and orientation sensor is used for measuring position and orientation of the one-dimensional variable force grinding and polishing device and sending the position and orientation to the controller, a force sensor is arranged between the compliant grinding and polishing mechanism and sliding blocks, the force sensor is used for collecting a contact force signal and send to the controller which can calculate speed control quantity, and the speed-adjustable compliant grinding and polishing mechanism is driven to move by rotation of a servo motor according to the speed control quantity. According to the integrated active-passive compliant one-dimensional variable force grinding and polishing device and the control method, the contact status of a abrasive belt and a workpiece can be adjusted in real time, and a stable and compliant grinding and polishingprocess is realized.

The invention relates to a deep-hole and shallow-hole combined bench blasting method capable of reducing blasting boulder rate. The method comprises the following steps of: 1) drilling boreholes on the bench of a blasting area through a triangular or quincunx-shaped hole arrangement method according to open deep-hole bench blasting design and requirements to obtain deep holes; 2) drilling a shallow borehole with hole diameter being less than or equal to 50mm in the middle between every two deep holes in the same row to obtain shallow holes; 3) respectively charging the deep holes and the shallow holes, laying initiating explosive cartridges and blocking the mouths of the deep holes and the shallow holes; and 4) conducting row-to-row sequential short-delay initiation according to initiation sequence in design requirements and blasting in one step. The deep-hole and shallow-hole combined bench blasting method capable of reducing blasting boulder rate has the advantages that the problem of high boulder rate of blocked sections in a deep-hole bench blasting method is solved, the blasting effect is improved, the subsequent excavating and loading efficiency is improved, the engineering progress is accelerated and the engineering cost is reduced.

The invention discloses a complex-surface recast-layer-free single/group-hole multi-station electric spark-electrolytic machine tool which comprises a machine tool body, a cathode system, a working solution circulating system, a power system and a control system. A control circuit of the power system controls switching among different-waveform power supplies according to different machining requirements, a power signal is applied to tool electrodes and a workpiece power supply system via an output circuit, and a single-loop or multi-loop power supply mode is adopted to independently supply power to the tool electrodes. A working solution circulation switching device can meet special requirements on free switching of internal and external solution flushing of tube electrodes for electric spark-electrolytic combined machining, and high-low pressure solution flushing and intermittent solution flushing can be realized; a clamping system of the cathode system can clamp single or multiple tool electrodes to realize single-hole and group-hole multi-station synchronous machining. The machine tool can realize electric spark-electrolytic combined hole-forming machining, and is simple in mechanism, high in machining efficiency and wide in application range; machined hole walls have no defects such as recast layers and micro cracks.

The invention discloses a preparation method of a spherical iron-based amorphous alloy powder; the spherical iron-based amorphous alloy powder is prepared by a gas atomization method, and the iron-based amorphous alloy with large amorphous forming capacity is used as a raw material; the atomic percentage composition of the iron-based amorphous alloy with large amorphous forming capacity is Fe<100-a-b-c-d-e>SiBP<c>Nb<d>Cu<e>, wherein a is 7-10, b is 7-11, c is 3-6, d is 0-3, and e is 0-2. The invention provides a method for preparing the spherical iron-based amorphous alloy powder by thegas atomization method to obtain the spherical alloy powder with a regular appearance, uniform particle size and complete amorphous state. The amorphous magnetic powder core prepared by taking the spherical iron-based amorphous alloy powder as the raw material has the advantages of uniform structure, high strength, high density and constant magnetic conductivity.