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59results about How to "Reduce the number of spawns" patented technology

Preparation method for reducing scales generated on surfaces of hot-rolled steel plates

The invention belongs to the technical field of hot-rolled strips and relates to a method for controlling the surface quality of hot-rolled steel plates, namely a preparation method for reducing scales generated on the surfaces of the hot-rolled steel plates. The chemical components of the steel in the method have wider application range and are especially suitable for the hot-rolled steel platescontaining such microalloying elements as Nb, V, Mn and Si. The hot-rolled steel plates have the following chemical components by weight: not less than 0.05% and not more than 0.20% of C, not more than 0.70% of Si, not less than 0.20% and not more than 2.00% of Mn, not less than 0.02% and not more than 0.10% of Nb, not less than 0.03% and not more than 0.15% of V, not more than 0.12% of Ti, not more than 0.040% of P, not more than 0.030% of S and the balance Fe and inevitable impurities. The control method dispenses with improvement of existing equipment, is simple and controllable in processconditions, realizes the aim of reducing the scales by controlling the slab tapping temperature, the finish rolling, initial rolling and final rolling temperature, the coiling temperature and the cooling method and has the advantages of low energy consumption, low cost and wide applicable scope.
Owner:PANGANG GROUP VANADIUM TITANIUM & RESOURCES +3

Rendering program online optimization method

The invention discloses a rendering program online optimization method comprising the following steps: building reduced programs of an original rendering program, selecting a plurality of reduced rendering programs as representative rendering programs according to the rendering cost and drawing error, and building a reduced dependency graph based on the dependence relationship; and in the rendering process, monitoring the parameters of a scene to be drawn, using a new round of online optimization when there is severe change, and completing one optimization through multiple cycles. The following operations are performed cyclically in each optimization: selecting K reduced programs from all the reduced programs as candidate reduced programs according to the reduced dependency graph, determining the current cycling result according to the drawing error and rendering cost, and deciding whether the current online optimization ends according to a plurality of cycling results. Optimal reduced rendering programs are selected dynamically, decoupling of rendering programs from a scene is realized, and the enumeration parameter space problem of off-line optimization is avoided. Moreover, rendering program error calculation and time measurement and scene drawing are carried out at the same time, operation is quick, and the real-time performance is strong.
Owner:ZHEJIANG UNIV

Technique for synthesizing boron-containing thermoplastic phenol formaldehyde resin by solvothermal process

The invention relates to a technique for synthesizing a boron-containing thermoplastic phenol formaldehyde resin by a solvothermal process, which comprises the following steps: adding a thermoplastic phenol formaldehyde resin, a boron-containing compound, oxalic acid and a solvent into a solvothermal reaction kettle, sealing, heating to 120-160 DEG C, keeping the temperature for 0.5-6 hours, cooling to room temperature, and removing the solvent contained in the product, thereby obtaining the boron-containing thermoplastic phenol formaldehyde resin, wherein the boron-containing compound uses an aromatic ring structure as the parent nucleus and hydroxymethyl and boron-containing structure as the substituent group of the aromatic ring structure, and the solvent is water or an alcohol solvent or a mixture of an alcohol solvent and water in a mass ratio of 1:(0.05-0.7). The method has the advantages of high raw material conversion rate and simple technical process; and the obtained product has the advantages of uniform molecular weight distribution and favorable heat resistance. Since the conversion rate of various raw materials is higher, the residual micromolecules do not need to be removed by water washing, thereby effectively reducing the sewage discharge.
Owner:XI AN JIAOTONG UNIV +1

Multi-station numerical control lathe

The invention belongs to the technical field of numerical control lathes, and particularly relates to a multi-station numerical control lathe. The multi-station numerical control lathe comprises a shell, a fixed cover and a first motor. The first motor is mounted below the shell, and a first motor rotating shaft penetrates through the shell. The portion, in a shell inner cavity, of the first motorrotating shaft is fixedly connected with a support shaft. The maximum ends of first sliding grooves are elastically connected with wave plates through springs. Fixing blocks are mounted in the firstsliding grooves correspondingly. The portion, located in fixing block inner cavities, of the rotating shaft is fixedly connected with a rotating disc. Two hinge rods are hinged to the rotating disc. Asliding rod is hinged to the other end of each hinged rod, and the sliding rods penetrate through the fixing blocks in design. The ends, located at the outer sides of the fixing blocks, of the sliding rods are fixedly connected with fixing plates. According to the multi-station numerical control lathe, by arranging the fixing blocks, the wave plates and limiting grooves, moving rods can be defined from multiple aspects, so that processing wheels can accurately and rapidly cut the surface of a workpiece to be machined, and the arrangement of the four processing wheels greatly improves the working efficiency.
Owner:TONGLING ZHAOLIN IND & TRADE CO LTD

Preparation method of mining reinforcement material

The invention relates to a preparation method of a mining reinforcement material, and belongs to the technical field of mining materials. The preparation method of the mining reinforcement material ischaracterized in that based on the flame retardance characteristic of ammonium polyphosphate, with diatomite as a carrier, a double-component ammonium polyphosphate-diatomite inorganic composite flame-retardant filler is prepared by an in-situ polymerization method, and an ammonium polyphosphate-diatomite/synergist composite flame-retardant filler is designed on the basis of the double-componentcomposite flame-retardant filler with magnesium hydroxide the synergist; with good smoke absorbing effect of the diatomite with high specific surface area and based on the special layered structure and composition and also flame retarding, smoke suppressing and acid resisting functions of magnesium hydroxide, the prepared mining reinforcement material is allowed to have good flame retarding and smoke suppressing properties; cellular glass cloth is used as a reinforcing agent for the mining reinforcement material, so that the strength of the mining reinforcement material is effectively improved; and according to the invention, a synergistic effect between two flame-retardant elements silicon and phosphorus causes a decrease in the number of brittle amorphous carbon layers generated and an improvement in the flame retardance of the mining reinforcement material.
Owner:张文中

Improved CBFM (Characteristic Basis Function Method)-based method for fast solving target monostatic electromagnetic scattering characteristics

The invention discloses an improved CBFM (Characteristic Basis Function Method)-based method for fast solving target monostatic electromagnetic scattering characteristics. According the method, firstly, redundant information existing in incident plane wave excitation is considered, and the redundant information content is removed by adopting an SVD (Singular Value Decomposition) algorithm; the coupling effect among sub-domains is fully considered, and a construction method of an ICBF (Improved Characteristic Basis Function) is provided; and the information of an original PCBF (Primary Characteristic Basis Function) and an SCBF (Secondary Characteristic Basis Function) is integrated in the ICBF, so that the current information on the surfaces of the sub-domains can be accurately represented. The method disclosed by the invention has the advantages that the number of incident plane waves is reduced by utilizing the SVD algorithm; the number of CBFs is further reduced through constructing the ICBF; a constructed reduced matrix is small in dimension and easy to store and solve; and therefore, the method is very suitable for analyzing the monostatic electromagnetic scattering characteristics of electrically large size targets.
Owner:ANHUI UNIV OF SCI & TECH

Composite micro-alloying hot rolled steel plate containing V and Nb and preparation method thereof

The invention belongs to the technical field of hot continuous rolled plate strips, in particular relates to a composite micro-alloying hot rolled steel plate containing V and Nb and a preparation method thereof, which can achieve the purpose of controlling the surface quality thereof. The composite micro-alloying hot rolled steel plate containing V and Nb, which is provided by the invention, notonly can reduce the generation of red scales but also can not increase the production cost. The composite micro-alloying hot rolled steel plate comprises the following chemical components in percentage by weight: C which is greater than or equal to 0.06% and is less than or equal to 0.08%, Si which is greater than 0.20% and is less than or equal to 0.30%, Mn which is greater than or equal to 0.70% and is less than or equal to 0.90%, V which is greater than 0.04% and is less than or equal to 0.05%, Nb which is greater than or equal to 0.02% and is less than or equal to 0.03%, P which is less than or equal to 0.025%, S which is less than or equal to 0.015%, and the balance iron and inevitable impurities. The preparation method provided by the invention has no need of reconstructing the existing equipment, has simple and controllable technological conditions, realizes the purpose of reducing the generation of scales by controlling the tapping temperature, the precision rolling temperature, the finishing temperature, the coiling temperature and the cooling mode of a plate blank, and has the advantages of low energy consumption and low cost.
Owner:PANGANG GROUP VANADIUM TITANIUM & RESOURCES +3

Device for measuring high-temperature liquid level of sponge titanium in closed container

The invention discloses a device for measuring the high-temperature liquid level of sponge titanium in closed container. The device comprises a connecting sleeve, a thermal insulation sleeve, a radarliquidometer and a thermal insulation glass plate, wherein the bottom of the connecting sleeve is connected with the top big cover of a sealed reactor used for sponge titanium production to enable theinner part of the sealed reactor to be communicated with the connecting sleeve; the top of the connecting sleeve is connected with the bottom of the thermal insulation sleeve through a flange; the radar liquidometer is arranged on the top of the thermal insulation sleeve; a radar liquidometer antenna downwards extends into the thermal insulation sleeve, and the instrument display unit of the radar liquidometer is upwards exposed out of the thermal insulation sleeve; in addition, through a fixed sealing structure, the fixing of the radar liquidometer on the thermal insulation sleeve and the sealing of the top of the thermal insulation sleeve are realized; the bottom of the thermal insulation sleeve is also provided with the thermal insulation glass plate which can be penetrated by radar wave; and an argon blowing pipe which is provided with an opening on the thermal insulation sleeve is arranged between the thermal insulation glass plate and the radar liquidometer. By use of the device, the non-contact measurement of the radar liquidometer for the high-temperature liquid level can be realized, and in addition, the device can be safely used in sealed high-temperature environment.
Owner:洛阳双瑞万基钛业有限公司

Transition liquid phase diffusion bonding method for additive manufacturing stainless steel and zirconium alloy

The invention discloses a transition liquid phase diffusion bonding method for additive manufacturing stainless steel and zirconium alloy, which comprises the following steps of: (1) sequentially stacking a high-temperature-resistant spacer, zirconium alloy, copper foil, nickel foil, additive manufacturing stainless steel and a high-temperature-resistant spacer in sequence to form a whole to be welded; (2) the whole to be welded is placed in a vacuum diffusion furnace cavity, vacuumizing is conducted, the diffusion welding temperature ranges from 880 DEG C to 980 DEG C, the diffusion welding pressure ranges from 0.5 MPa to 3 MPa, and the heat preservation time ranges from 60 min to 90 min; the thicknesses of the copper foil and the nickel foil are 30 microns to 50 microns; according to the method, the copper foil and the nickel foil are introduced between the zirconium alloy and the additive manufacturing stainless steel, so that the generation number of brittle phases in a diffusion welding joint is reduced to a certain extent, the residual stress of a connecting interface of the additive manufacturing stainless steel and the zirconium alloy can be effectively reduced, the generation of cracks is inhibited, and the comprehensive mechanical property of the welding joint is improved; and the shear strength result of the joint shows that the shear strength is greater than 90 MPa.
Owner:JIANGSU UNIV OF SCI & TECH

Method for realizing random motion of entity in fixed area and storage medium

The invention discloses a method for realizing random motion of an entity in a fixed area and a storage medium. The method comprises the following steps: randomly selecting a path starting point in a limited area; sequentially and randomly generating a time period ti of each stage, accumulating the sum of the current random time periods until the total patrol time is reached, starting from a first time period, randomly moving at a constant speed, wherein the speed is random, calculating whether an end point of the current time period is in an area in advance, if the end point of the current time period exceeds the area, taking an intersection point as a transfer point in the time period, and starting from the intersection point to continue new random movement until the time period runs out; circularly executing the above steps in sequence until all random time periods are completely maneuverable. Therefore, in a given area, random motion of the combat entity in the area can be achieved according to the method, compared with a conventional random path generation algorithm, the number of times of generation of the random points and the number of times of judgment of whether the random points are located in the area are reduced, and the execution efficiency is improved.
Owner:BEIJING HUARU TECH
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