35results about How to "High technology added value" patented technology

The invention relates to a preparation method of durable low-smoke halogen-free flame-retardant polyacrylonitrile fiber. The preparation method of durable low-smoke halogen-free flame-retardant polyacrylonitrile fiber is characterized by comprising the following steps: 1) blending spinning solution preparation: based on the mass parts of the polyacrylonitrile powder and the phosphorus-containing flame retardant, dissolving 65-80 parts of polyacrylonitrile powder and 20-35 parts of phosphorus-containing flame retardant into a 50-52wt% sodium thiocyanate aqueous solution, and mixing to obtain the blending spinning solution, wherein the ratio of the total mass of the polyacrylonitrile powder and the phosphorus-containing flame retardant to the mass of the 50-52wt% sodium thiocyanate aqueous solution is (10-15):100; 2) wet spinning; and 3) irradiation: irradiating primary flame-retardant polyacrylonitrile fiber in an electron beam accelerator with 0.5-5MeV or a <60>Co device to obtain the durable low-smoke halogen-free flame-retardant polyacrylonitrile fiber, wherein the irradiation dose is 20-50kGy. The fiber prepared by using the method has good flame-retardant durability and small smoke generation property.

The invention discloses a method for recovering lead plaster of the negative pole of a disused lead acid storage battery and application of the recovered lead plaster. A preparation method of superfine lead powder comprises the following steps: firstly, a disused battery is fully charged; secondly, the lead plaster of the negative pole is separated from the lead acid storage battery; thirdly, the main substance of the lead plaster of the negative pole is changed into a lead raw material mainly composed of PbO and Pb via high temperature and humidity solidification; and lastly, dry grinding or crumbling of the lead raw material is carried out under the condition of oxygen, or wet treatment is carried out by using organic salt and organic acid to obtain superfine lead powder. The recovery method disclosed by the invention is low in cost, simple and convenient in process, high in recovery rate of lead, low in energy consumption and easy to achieve industrialization, and causes minor pollution to the environment during recovering the lead. The method directly prepares superfine lead powder which can be directly used to produce storage batteries. The superfine PbO powder prepared by the method has good performance, is high in technology added value, and can obtain a battery pole plate which has high electrochemistry capacity and a long charging / discharge service life.

The invention discloses an imperfect degree-of-freedom parallel connection five-axis computerized numerical control laser cutting machine, relating to a laser cutting machine with an imperfect degree-of-freedom parallel connection five- axis drive mechanism. The laser cutting machine comprises a machine body, an X-direction guide rail, a beam, a laser cutting heat and a controller, wherein the side surface of the beam is provided with a Y-direction guide rail, the laser cutting head is movably connected with the Y-direction guide rail through an imperfect degree-of-freedom parallel connection mechanism; and the imperfect degree-of-freedom parallel connection mechanism comprises a Y-axis slide carriage device, a Z-axis slide carriage device, a cross, a laser head installing support, four equilong connecting rods and four linear driving devices. The invention realizes five-axis motion of the conventional laser cutting head through the imperfect degree-of-freedom parallel connection device, wherein the beam realizes basic X-direction motion relative to the motion of the machine body; four drive blocks respectively move and drive the laser heat installing support to make translation or rotation motion through respective connecting rods, mutual motion among the four drive blocks realizes combined motion of an Y axis, a Z axis, an A axis and a C axis; and the imperfect degree-of-freedom parallel connection five-axis computerized numerical control laser cutting machine has skilled structures of all parts, large rigidity and small inertia, so that the motion precision can be ensured.

The present application discloses a method and system for obtaining water quality data deduction based on machine learning. The method is divided into a model generation stage and a model deduction stage. In the model generation stage, the historical data of various characteristics collected by each monitoring station in the water area under study is analyzed and processed, and the independent relevant feature set of the target water quality factor and its corresponding historical data set are obtained. The machine learning method obtains the optimal derivation model of the target water quality factor; in the model derivation stage, the data of each feature factor covered by the independent relevant feature set for a certain period of time is collected, and the data is input into the optimal derivation model, and the target water quality factor of the period is calculated. The data. The present application is a new water quality data acquisition method that does not require traditional data acquisition methods such as chemical reagents and sensor detection, can reduce environmental pollution and hidden dangers caused by traditional water quality data acquisition methods, and has the advantages of low cost, safety, environmental protection and high technical added value.

The invention discloses a three-dimensional laser engraving machine, which includes a bracket, an FPGA control device, a transmission mechanism and a mechanical transmission device. The top of the bracket is provided with a guide rail, and the servo motor is connected to the slider. The right side of the bracket is A driver is fixed, the driver is electrically connected to the servo motor and the FPGA control device through wires, the slider is slidably connected to the guide rail, the servo DC rotary motor is electrically connected to the FPGA control device, and the servo DC rotary motor The output shaft of the laser is connected to a laser through a coupling, and the lower end of the laser is fixedly connected to the mechanical transmission device. The lower end of the mechanical transmission device is provided with a laser engraving head. The present invention has simple structure, simple operation, complex and accurate mathematical operations, It has outstanding advantages such as high rigidity, fast response, high precision, strong adaptability, high technical added value and strong flexibility.

The invention discloses a production method and a production system for a bevel gear, and belongs to the technical field of bevel gear production. The method comprises the following steps that (1), amaterial section conforming to requirements is prepared; (2), the material section is heated to 1150-1180 DEG C in a heating device; (3), the heated material section is rolled into a material cake ona blank making and swinging rolling device; (4), the middle of the material cake is rolled to form a center taper groove and is rolled to reach the preset thickness through the blank making and swinging rolling device; (5), a through hole is punched in the center taper groove through a punching device; (6), a ring expanding device is used for carrying out ring expanding to obtain an annular blank;(7), rolling and forming are carried out on the annular blank through a forming and winging rolling device to obtain a product blank; and (8), the product blank undergoes heat treatment and surface treatment to obtain a finished product. Through the method, the product with higher precision, the lighter weight, the better product quality and the smaller turning allowance can be obtained, and thecost is saved.

The invention relates to a method for synthesizing a micro-nanometer level hollow polymer ball, a carbon ball and a graphitized ball by one step. The method comprises the following steps that: hydroxybenzene and aldehyde are used as raw materials; lysine is used as a catalyst; fatty alcohol is used as a solvent; a polymer hollow ball with an even dimension can be produced by polymerization at a temperature of 80 DEG C; and the polymer hollow ball is further charred to produce a hollow carbon ball. If Fe<3+> is introduced into the polymer hollow ball, the polymer hollow ball is charred to produce a graphitized hollow ball. Through changing a molar ratio of the hydroxybenzene and aldehyde, the catalyst amount and the type of the solvent, the hollow carbon ball with a grain diameter of between 0.6 and 2 mu m can be produced. The micro-nanometer level hollow carbon ball has an even and controllable grain diameter, high purity, smooth surface, stable performance and high technical added value, is suitable for a load type magnetic separation catalyst, an absorption separating agent of pigment and organic molecule and a separating agent of protein and salt and is used as an electrode material of a super capacitor with high power density and high energy density.

The invention discloses a method for producing decorative artistic porcelain, and aims to provide the decorative artistic porcelain which has strong stereo perception of surface pattern, lacquer-like and metal-like appearance, meets psychological requirement of people on seeking fashion and variation, can save energy, reduce consumption, reduce cost, and improve added value of product technology.The method is realized through the following technical proposal: petuntze is fired into a biscuit of the decorative artistic porcelain at medium temperature; an engraving layer is coated on the surface of the biscuit; the surface of the engraving layer is polished and smoothed, and is sprayed with white nitrocellulose primer; the required pattern is engraved on the engraving layer by a graver; residual stained paper is removed; membranella stained paper is stuck on a required position; the surface membranella is removed in 30 minutes; a layer of nitrodope is sprayed on the surface of the whole product; a metal foil film is stuck on the required position by adhesive; and a layer of light or matte polyester varnish is sprayed on the surface of the whole product to produce the product.

The invention relates to a method for quickly synthesizing block graded pore structural nitrogenous porous carbon. The method can synthesize characteristic porous carbons which comprise graded pore structural nitrogenous porous carbon, macropore-rich graded pore structural nitrogenous porous carbon, macropore-rich ordered nitrogenous mesoporous carbon and graded pore structural nitrogenous magnetic porous carbon. The porous carbon is quickly synthesized in one step by resorcinol and formaldehyde serving as raw materials, amino acid or imidazole compounds and organic amine serving as catalystsand water or ethanol aqueous solution serving as a solvent through a sol-gel process. The flow is simple, the preparation cost is low, the purity of a product is high, the selective range of raw materials is broad, and the method is convenient to apply and easy to implement large-scale preparation and has large application potential and market prospect.

The invention relates to the field of beneficiation, in particular to a magnetite beneficiation method. Through technological closed cycle production, technological path is shortened, and production and transport costs are remarkably saved; energy is saved by 0.5-1 degree / ton; plant construction area is reduced; building of tailings ponds is reduced due to dry discarding. By the beneficiation method, large-scale tailings discarding before milling is realized, milling grade is remarkably improved, and technical parameters of ball-milling magnetic separation sections are changed thoroughly. The magnetic-gravitational beneficiation process can be applied to preconcentration of low-grade ore, ore resources are pre-concentrated, the milling grade is improved, and beneficiation cost is reduced; the magnetic-gravitational beneficiation process can also be applied to recleaning of tailings to recover the tailings relatively concentrated on dry slope sections of tailings dams; the magnetic-gravitational beneficiation process can be further applied to powdered iron purification of dressing plants to discard lean intergrowth and gangue in powdered iron, product grade is improved, and technical additional value of products of the dressing plants is increased. The magnetic-gravitational beneficiation process substitutes for the wet-type magnetic separation process and is a qualitative leap for dry-type preconcentration and tailings discarding of beneficiation of mines.

The invention discloses a hybrid five-axis laser cutting machine and relates to a laser cutting machine with a parallel and hybrid five-axis driving mechanism. The hybrid five-axis laser cutting machine has the characteristics of more flexible structure, larger rigidity, smaller inertia and higher precision and comprises a machine body, an X-direction guide rail, a cross beam, a laser cutting head and a controller, wherein a Y-direction guide rail is arranged on the side surface of the cross beam, and the laser cutting head is movably connected with the Y-direction guide rail on the side surface of the cross beam through a hybrid device; and the hybrid device comprises a Y supporting plate mechanism, a Z supporting plate mechanism, a driving frame, an annular support frame, a pair of driving block mechanisms and a pair of connecting rods. The five-axis motion of the conventional laser cutting head is realized through the hybrid device. As for the hybrid five-axis laser cutting machine, the concept is ingenious, all parts have flexible structures, the rigidity is great, the inertia is small and the motion precision can be further ensured. The laser cutting machine is a product formed by combining the machine tool technology, the robot technology and the numerical control technology, and compared with a traditional series machine tool, the laser cutting machine is simple in structure and is complex and accurate in mathematical operation. The laser cutting machine has the outstanding advantages of large rigidity, fast response, high precision, strong applicability, high technical added value and the like.