247 results about "State structure" patented technology

A method of building systematically a multi-dimensional (n, D, L) circular trellis coded modulation (CTCM) encoder with properties of optimal energy efficiency, strong tail biting and maximum minimum distance (d_min) of trellis paths is disclosed. In addition, a communication system for use in a power limited channel application is disclosed comprising a circular trellis coded modulation (CTCM) encoder with permuted state structure for encoding based on a circular trellis path associated with a sequence of digital information bits and a set of simplexes identified for the path from a multi-dimensional signal constellation; a transmitter coupled to said CTCM encoder for transmitting said sequence of channel symbols over said channel; a receiver for receiving a transmission from said transmitter including said sequence of channel symbols and any noise induced therein; and a CTCM decoder coupled to said receiver for decoding the received transmission without knowledge of the starting state of the circular trellis path of the CTCM encoder to recover the sequence of information bits. Apparatus and methods of encoding and decoding are also disclosed utilizing a combination of circular trellis-coded modulation with permuted state structure and simplex signal constellation techniques for use in the digital communication system.

The invention discloses a carbide-containing ausferrite spheroidal graphite cast iron grinding ball and a manufacturing method thereof, relating to a cast iron alloy containing spheroidal graphite. The grinding ball comprises the following chemical elements in percentage by mass: 3.3 to 3.7 percent of C, 2.4 to 3.3 percent of Si, 2.5 to 3.6 percent of Mn, 0.6 to 1.5 percent of Cr, less than 0.08 percent of P, less than 0.025 percent of S, 0.03 to 0.05 percent of Mg, 0.02 to 0.04 percent of Re and the balance of Fe. The preparation method of the grinding ball comprises the following steps of: (1) raw material preparation and smelting; (2) spheroidization and inoculation; and (3) isothermal quenching heat treatment. In the invention, a certain quantity of carbides and graphite balls are formed in a grinding ball casting-state structure by utilizing a sand lined metal casting technology; and an ausferrite base body with excellent comprehensive mechanical property is obtained by adopting an isothermal quenching technology; and as a certain quantity of carbides are distributed in the ausferrite base body, the carbide-containing ausferrite spheroidal graphite cast iron grinding ball has high wear resistance and toughness.

The invention relates to a forging forming process of a high barrel-shaped aluminum alloy forged piece. A cross upsetting and rolling method is adopted in a forging process, so that on one hand, an aluminum alloy blank can be fully deformed, and a casting-state structure is enabled to be changed into a forged structure, on the other hand, by use of the cross upsetting and rolling method, the anisotropy of an aluminum alloy ring piece can be reduced and the radial elongation of the aluminum alloy ring piece can be improved. The feeding rate of a ring rolling machine during ring rolling is changed in a forging process, so that the aluminum alloy forged piece is prevented from being overheated on one hand, and the end surface of the aluminum alloy forged piece can be prevented from peeling and sinking; and besides, the aluminum alloy forged piece is subjected to heat treatment, so that the intensity of the forged piece can be improved, hardening constituents precipitated out from the aluminum alloy forged piece at the heat treatment temperature can be finely dispersed and distributed, the participating stress of the aluminum alloy forged piece can be reduced and the follow-up machining deformation can be prevented.

A system and computer program product for providing certified confidential data collaboration between two or more of a plurality of parties where an established trust relationship is not required between the plurality of parties. The method includes creating, by a first party, a changeset proposal, the changeset proposal having a comment, a list of attachments, a list of parties, and a list of versioned and typed data sections, remotely performing, by the first party, a certified operation on a computer associated with a semi-trusted governor party and passing the changeset proposal to the certified operation, creating, by the semi-trusted governor party, a globally unique changeset reference in a certified thread having a globally unique thread tracking number and a sequential changeset number, validating, by the semi-trusted governor party, the changeset proposal and creating, by the semi-trusted governor party, a state-at-changeset structure including the validated changeset proposal and a timestamp, extracting, by the semi-trusted governor party, a section-state-at-changeset structure from the changeset proposal, performing, by the semi-trusted governor party, a cryptographic hash of the state-at-changeset structure, performing, by the semi-trusted governor party, a cryptographic hash of the section-state-at-changeset structure, writing, by the semi-trusted governor party, to a local transactional database a changeset fat twin record including the changeset reference and its associated state-at-changeset structure and section-state-at-changeset structure, communicating, by the semi-trusted governor party, a changeset reference notification for each fat twin record to each of the one or more parties, performing, by the semi-trusted governor party, a certified operation in a blockchain a certified thin twin smart contract and passing the changeset reference, the cryptographically hashed state-at-changeset structure and the cryptographically hashed section-state-at-changeset structure, validating, by the certified thin twin smart contract, that there does not exist a previous certified operation with the same changeset reference, and writing by the thin twin smart contract to the blockchain a new thin twin record containing the changeset reference, the cryptographically hashed state-at-changeset structure and the cryptographically hashed section-state-at-changeset structure. The section-state-at-changeset structure is a subset of a total state of the list of versioned and typed data sections. A certified operation is expressed by the changeset reference, the state-at-changeset structure and the section-state-at-changeset structure occurred may be proved by each of the list of parties by cryptographically hashing the state-at-changeset structure and the section-state-at-changeset structure associated with the certified operation, and performing a proof-of-certified-operation on the thin twin smart contract and passing the changeset reference, the cryptographically hashed state-at-changeset structure and cryptographically hashed state-at-changeset structure. The proof may be determined even where the semi-trusted governor party is unresponsive after performance of the certified operation.

The invention relates to a manufacturing technology of a novel hobbing cutter with a laser cladding WC wear-resistant coating. The manufacturing technology comprises the following steps: (1) manufacturing the hobbing cutter with a forging method, wherein the hobbing cutter is made of alloy steel; (2) carrying out peel removal cleaning treatment on surfaces to be machined of the intertooth space of an alloy cutter; (3) using a transverse flow CO2 laser, taking a numerical control machine tool as a workbench, and carrying out cladding wear-resistant strengthening treatment on the intertooth space of a cutter ring cutter, wherein the thickness of the WC cladding layer is 1.5-2.5mm; (4) carrying out performance detection on a composite coating. A laser surface cladding technology is adopted, and the tissues of a cladding coating mainly consist of carbides and a supersaturated solid solution superfine casting-state structure, wherein spherical tungsten carbide ceramics are of ultra-high hardness and uniformly distributed on a binding phase with extremely high hardness level, and also achieves an inhibition effect on abrasion, and the grinding resistance between hobbing cutter edges can be effectively improved; the binding phase is good in tenacity and high in strength, the formation of cracks can be effectively reduced, and the wear resistance and corrosive resistance of the hobbing cutter is improved, and the service life of the hobbing cutter is prolonged.

The invention provides polyamide6-graphene quantum dot/carbon nanotube anti-static fiber and preparation. According to the method, the molecular template effect of graphene quantum dots is utilized for being compounded with a carbon nanotube to form a self-assembled three-dimensional network structure first and then combined with a PA6 knitting state structure to form a dislocation effect to construct a conductive path, conductivity is improved on the condition of not losing a mechanical property of PA6 fiber, and meanwhile conductivity and the mechanical property of the PA fiber are promoted. Moreover, by means of compounding of the graphene quantum dots and the carbon nano tube and the self-assembled three-dimensional network structure, electronic transmission efficiency in the carbon nano tube is improved, a small quantity of GQD/CNT is added, conductivity of the fiber can be improved, and transparency is improved at the same time, which is beneficial for treatment technologies like dyeing in the fiber preparing process. By means of the traditional mature PA6 melt spinning technology, the high-strength and high-conductivity PA6-GQD/CNT composite fiber with tensile strength being 0.52-0.81 GPa and line resistance being magnitude 106 is prepared and can be applied to anti-static clothes, needle-punched carpet, filter felt, industrial non-woven fabric, medical supplies and the like.

The invention relates to an electronic device posture adjustment device based on a bistable-state structure. The electronic device posture adjustment device comprises a shielding cover (3) and a PCB bottom plate (4), a posture adjustment unit is packaged in the shielding cover (3) and comprises a frame (5), bistable-state elastic beams (6) and piezoelectric units (7), the bistable-state elastic beams (6) are fixed to the inner side of the frame (5) and has the upwards-convex state and the downwards-concave state, the piezoelectric units (7) are symmetrically spliced to the left sides and the right sides of the bistable-state elastic beams (6), permanent magnets (8) are fixed to the middles of the bistable-state elastic beams (6), and electromagnets (9) are arranged above and below the permanent magnets (8) and fixed to the frame (5). By means of the electronic device posture adjustment device, the external vibration energy can be collected, the in-air posture of a portable electronic device in the falling process can be further adjusted, and an impacting resistant portion of the portable electronic device is in contact with the ground firstly so that the effect of protecting a fragile part can be achieved.

The invention provides a three-directional near-isotropy high-performance aluminum alloy cylindrical forge piece manufacturing process. The manufacturing process specifically comprises the following steps of raw material size design, cast ingot quality detection, heating before ingot casting, multi-directional forging, return to a furnace for heating, Z-direction upsetting and punching, return toa furnace for heating, core shaft drawing out, return to a furnace for heating, saddle forging, machining, heating before rolling, ring rolling, solution treatment, aging treatment and quality detection. According to the manufacturing process, an aluminum alloy cylindrical forge piece is subjected to nearly equal deformation in three directions, so that the three-direction performance of a productis nearly isotropic; a thick residual crystalline phase in cast-state structure is fully crushed so as to provide structure preparation for second phase uniform dispersion distribution in the heat treatment process; a second phase in the structure is fully dissolved, the degree of supersaturation is improved, the material potential is excavated to the maximum extent, and the performance limit ofa material is exerted; and the small reduction rate is adopted, the quenching water temperature is increased, the stress in the product manufacturing process is reduced, so that the residual stress ofthe forge piece is controlled within a certain range.

The invention provides a composite metamorphic cast aluminum alloy. The composite metamorphic cast aluminum alloy comprises, by weight, 8.0 % to 10.5 % of Si, 0.17 % to 0.3 % of Mg, 0.2 % to 0.5 % of Mn, 0.1 % to 1.0 % of Yb, 0.5 % to 3.0 % of sodium salt, less than 0.2 % of Fe, less than 0.1 % of Sn, less than 0.1 % of Cu and less than 0.05 % of Pb and the balance Al, wherein the Fe, the Sn, the Cu and the Pb are limited impurity elements. The invention further provides a preparation method and application of the composite metamorphic cast aluminum alloy. Due to metamorphism of the heavy rare earth element Yb and the alloying function, the casting-state structure of the alloy is significantly refined, strength and toughness of the alloy are improved, oxidation blending imported by the sodium salt metamorphism is reduced, and the compactness of a casting is improved.

The invention discloses a model prediction tracking control method in batch chemical engineering. According to the invention, the method introduces an improved state space model to the model prediction control and iterative learning control method so as to increase the control properties in batch manufacturing. Different from traditional state space models, the method herein, in the state model structure in the proposed method, introduces the dynamic combination between a process state variable and output tracking errors, and uses the improved process model. By using the improved technical solution, the method can obtain controllers which have more freedom to regulate control properties, and can achieve better controlling effects.

The invention discloses a Ti6242 titanium alloy consisting of the following components in percentage by mass: 5.5-6.5% of Al, 1.8-2.2% of Sn, 3.6-4.4% of Zr, 1.8-2.2% of Mo, 0.06-0.1% of Si, less than or equal to 0.1% of Fe, less than or equal to 0.15% of O, less than or equal to 0.05% of C, less than or equal to 0.05% of N, and the balance of titanium and inevitable impurity elements. A preparation method of a small-size bar of the Ti6242 titanium alloy comprises the following steps: performing billet forging to obtain a blank with a preliminarily broken as-cast state structure; then performing 7 fire forging to obtain a blank structure with fully broken and uniformly refined crystalline grains; then performing 2-3 fire forging to obtain a black skin bar; and finally, performing heat treatment to obtain a finished product bar. By adopting the Ti6242 titanium alloy and the preparation method disclosed by the invention, the problem that the structural uniformity of the edges and center of the bar is poor is solved, a small-size (phi 20-100mm) Ti6242 titanium alloy bar for vanes of aircraft engines is obtained, and the structure is highly homogenized and is good in flaw detection.

An AlCuMgAg-series high-strength refractory Al alloy with alloyed Ti contains Cu (4-8 wt.%), Mg (0.4-1.0), Ag (0.3-1.0), Mn (0.3-0.6), Zr (0.05-0.30), Ti (0.05-1.1) and Al (rest). It features that the Ti is contained for finding the original cast-state structure of alloy, so optimizing its performance.

The invention relates to a composite yarn formation method of built-in powder materials, and belongs to the technical field of textiles. The method comprises the steps that firstly, non-woven flexiblefabric materials are divided into fiber strips S1 and fiber strips S2; secondly, a padding method is adopted for conducting padding combination on the fiber strips S2 and powder to form powder stripsS2'; finally, each composite strip formed by sandwiching one powder strip S2' with two overlapping fiber strips S1 is subjected to composite twisting and yarn formation by adopting a flyer spindle twisting and winding mode, and the linear sheet-shaped composite strips are converted into linear cylindrical yarn. The sheet-shaped untwisted loose-state structures of the composite strips are changed,the technical bottleneck that it is difficult to comb and collect powder into strips by means of traditional methods is broken through, the built-in short-flow yarn formation of powder materials is achieved, the technical purpose of the composite yarn formation of the powder materials is achieved, and the quick and effective method is provided for preparing high-functionality high-quality yarn and apparel fabrics by using the powder materials. The method is short in process flow and easy to popularize and apply.

The invention discloses a production method of an integral special-shaped heavy forging made of austenitic stainless steel, and belongs to the technical field of stainless steel machining. The process comprises the following steps of smelting which combines an electric furnace, AOD (argon oxygen decarburization) and electroslag remelting, hammer cogging, upsetting, stretching, remelting heating and forging, heat treatment, machining, cold bending or hot bending machining, heat treatment and the like. Electroslag ingot surface quality is improved through surface grinding, and an electroslag ingot casting-state structure is broken through hammer cogging, so that the hot-working character of billet steel is improved, the electroslag ingot is restrained from hammer cogging, and conditions are provided for following large-deformation upsetting and stretching. The steel ingot crystal grain size is refined through repeated large-deformation upsetting and stretching processes, recrystallized grains are restrained from abnormal growth through controlling of last flame path remelting heating temperature, forging deformation and final heat treatment process, coarse crystals and mixed crystals are avoided, the forging structure is refined, and the crystal grain size reaches a 4.0 grade or high.

The invention relates to an aluminum alloy anodizing coloring treatment method, and belongs to the technical field of metal materials. In the mode of direct-current low-voltage power source loading, a sulfuric acid solution is used as a main ingredient of an electrolyte, and anodizing coloring is carried out with organic dyestuff as a dyeing agent through the method of organic dyestuff adsorption coloring. The method includes the concrete steps of anodizing treatment, wherein the sulfuric acid solution electrolyte is used, a low-voltage direct-current power source is used, and the treatment is carried out at normal temperature, and after treatment is finished, deionized water washing and airing are conducted to obtain an anodised aluminum film sample surface of a crystalline state structure; coloring treatment, wherein the organic dyestuff is dissolved fully, heated to 45 DEG C and kept warm, and a prepared anodised aluminum film sample is put in the organic dyestuff, and soaked for 30 min to form a dyed sample. Heat in the treatment process is small, and concentrated heat production is effectively avoided. The prepared anodised aluminum film is of the crystalline state structure, and surface hardness, abrasive resistance and corrosion resistance are greatly improved.

The invention belongs to the field of biomedical material and relates to a preparation method of biological function composite auxetic hydrogel with shell core structure. In the method, the biological function composite auxetic hydrogel with shell core structure is prepared by the radiation cross-linking technology or freezing/unfreezing method, i.e. an inner core is of a dense structure with lowwater content, and an outer shell is of a communicated porous structure with relatively low modulus. Macroscopically, a negative Poisson's ratio effect of the material is realized, and the inner coreand outer shell are in firm combination. By controlling the core component and size as well as the shell composition and structure of the material, the auxetic hydrogel meeting various application requirements can be prepared; by controlling the radiation dosage in the radiation cross-linking as well as the parameters of the freezing/unfreezing process such as temperature, time, circulation timesand the like, the condensed state structure and crystallization degree of the polymer can be changed so as to prepare the biological function composite auxetic hydrogel with controllable performance.The biological function composite auxetic hydrogel is suitable for the bionic implantation repair material for the soft tissues such as blood vessels, nerves, cartilage, intervertebral disk, muscles,ligaments and the like.

The invention relates to an original state sampling method for constructed fractured rock mass, which aims at solving the technical problems that the original state structure of the constructed fractured rock mass is easily damaged under disturbance of the conventional sampling appliance, and the representative sample required by indoor research of a microstructure for a key geological structure is difficult to acquire. According to the technical scheme, the method comprises the following steps: a. drilling an observation hole in a shallow surface layer on which a rock sample to be sampled is positioned by using a drilling machine; b. putting positioning and imaging equipment in the observation hole for acquiring the geological structure position and physical characteristic information of the hole wall gap in the observation hole; c. positioning and plugging hole sections with complete rock mass or containing sparse fractures only in the observation hole by employing the plugging guide equipment according to information in the step b; d. injecting the epoxy resin curing agent glue solution into a reserved section in the observation hole, so as to inject the glue solution to the preset position along the dense fractures or fractured gaps of the reserved section under impact of high-pressure gas; e. reaming or continuously drilling the indoor analytical rock samples after the glue solution wholly reaches the bonding strength.

The invention relates to a gradient stress plasticity modification method which specially aims at damage control and fine structure regulation of high-entropy alloy material characteristics. The purpose of the method is to solve the problems that a high-entropy alloy casting state structure is mainly composed of bulky pine-tree crystals, and the comprehensive mechanical property of the high-entropy alloy casting state structure is poor. A preparation method mainly comprises the steps that a high-entropy alloy ingot is prepared; homogenization heat treatment, analogue simulation and canned forging are conducted; and a high-entropy alloy ingot blank is obtained. When the high-entropy alloy ingot is processed, preset variable cross-section canning is mainly adopted, the stress state of the interior of a high-entropy alloy material in the process is effectively controlled, and the gradient three-way compressive stress combined with deformation characteristics is formed. By means of the gradient stress plasticity modification method, initiation and propagation of microcracks induced by lattice distortion can be effectively inhibited finally, crystalline grains are refined, the comprehensive mechanical property is improved, and effective modification of the high-entropy alloy is achieved.

The invention relates to a method for refining grains of heavy forging steel of a nuclear reactor evaporator, which belongs to the technical field of heat treatment of steel. The method comprises the following steps of: performing electric furnace smelting and ladle seconclary refining during steel production; performing vacuum pouring by an improved vacuum carbon deoxidation (VCD) process or a silicon killed deoxidation process and a subsequent multi-furnace pouring (MP) process to obtain 200 to 600 tons of steel ingots; accurately controlling the components of the steel in the smelting process, wherein the mass fraction of aluminum elements is between 0.02 and 0.04 percent, the mass fraction of nitrogen elements is between 0.005 and 0.015 percent, the mass fraction of silicon elements is less than 0.1 percent when the improved VCD process is used, and the mass fraction of the silicon elements is between 0.1 and 0.3 percent when the silicon killed deoxidation process is used; and homogenizing a forging state structure by a two-time normalizing preheating treatment process after the ingot is subjected to forging molding, and refining the grains. The method has the advantages that:the grains used for manufacturing the heavy forging steel of the nuclear reactor evaporator are obviously refined; and the level of the grain size is improved from a level 5 to a level 8.5.

The invention publishes a phosphoric flame-resistant additive which is used in the solution of the lithium ion battery, which is a phosphoric organic compound, its basic structural formula likes right, or is the isometry body of the state structure; of which R1, R2, R3 are alkyl CnH2n+1 or alkene base CnH2n-1, and the carbon atom number of R1, R2, R3 is 1<=n<=4. The application method of the phosphoric flame-resistant additive is adding the phosphoric flame-resistant additive in the ordinary lithium ion battery solution; its quantity is the 5 to 40wt% of the lithium ion battery solution weight. The phosphoric flame-resistant additive has high phosphoric quantity, the good flame-resistant effect, and low viscosity, not only enables the electrolyte to have the good flame retardance, simultaneously has little influence of viscosity, conductivity of electrolyte, has good wettability with positive and negative pole piece and the membrane, and has good charging and discharging performance.

The invention relates to a method for preparing high strength and high plasticity aluminum-magnesium alloy of a mixcrystal structure. The preparing method includes the two steps of homogenizing treatment and intermediate annealing-assisted large reduction controlled rolling. The method specially comprises the steps that element macro segregation in a cast-state structure is removed through high-temperature homogenizing treatment at first to achieve high alloying element solubility; and then controlled rolling deformation is combined with intermediate annealing treatment to introduce high-density dislocation, and recrystallization is promoted to refine crystal grains. Nano-grains, ultra-fine grains and micro-grains in the aluminum-magnesium alloy structure prepared through the method are mixed to coexist, and compared with a single nano-grain or ultra-fine grain structure, the mixcrystal structure aluminum-magnesium alloy has high strength and high plasticity. Dislocation motion, accumulation and storage in the plastic deformation process can be facilitated through the mixcrystal structure, plastic strain local concentration of a nano-grain metal material is effectively prevented, and work hardening and plastic deformability of the material can be improved obviously.

The invention discloses a method for testing the thermo-oxidative ageing degree of a polyethylene material, which comprises: (1) testing the molecular motion performance and condensed-state structure distribution of the polyethylene material; (2) calculating an aging factor, crystal phase mass percent content, interface mass percent content and amorphous phase mass percent content according to the result of test of the step (1) ; and (3) determining the aging degree of the polyethylene material according to the result of the calculation of the step (2). Compared with the traditional test method, the method of the invention has the advantages of convenience, quickness, high accuracy, small sample number, no damages to materials in use and wide application range.

A data processing system includes a processor core, a system memory, coupled to the processor core, that includes an interrupt data structure including a plurality of entries each associated with a respective one of a plurality of interrupts. An input/output (I/O) subsystem including at least one I/O host bridge and a plurality of partitionable endpoints (PEs) each having an associated PE number. The I/O host bridge, responsive to receiving a message signaled interrupt (MSI) including at least a message address, determines from the message address a system memory address of a particular entry among the plurality of entries in the interrupt data structure, accesses the particular entry, and, based upon contents of the particular entry, validates authorization of an interrupt source to issue the MSI and presents an interrupt associated with the particular entry for service.

The invention discloses a manufacturing method for a micro electro mechanical system (MEMS) micromirror bistable state structure. The method comprises the following steps of: depositing a first-layer dielectric thin film material on the front of a high-impedance silicon slice and etching; evaporating a first-layer metal thin material and etching to form a metal layer; sputtering a second-layer metal film and etching to form a micromirror surface; performing deep silicon etching on the back of the silicon slice to form a cavity; performing deep silicon etching on the front of the high-impedance silicon slice; and after etching, cooling to room temperature to form the initial state of the bistable state structure. An optical switch which has the MEMS micromirror bistable state structure which is manufactured by the method comprises the bistable state structure and a drive structure; and the bistable state structure is arranged above the drive structure. The manufacturing process is simple and practicable; the micromirror surface, a straight beam drive arm, and a foundation are integrally formed; and high manufacturing accuracy can be guaranteed; and the optical switch is convenient to operate, high in response speed and reliability and low in energy consumption, and two states are switched by solenoid drive.