254 results about "Green manufacturing" patented technology

The invention discloses a method for manufacturing cellulose film and silk. The cellulose is dissolved in mixed liquid 5-12wt% natrium oxyhydrogen and 8-20wt% ureophil, gets the cellulose liquid, then carries on film scratching and silk spraying to the cellulose, they are solidified in the solidifying bath, then the regenerated cellulose film and silk will be got after being cleaned. The cellulose thick liquid has excellent fiber textile performance and compactibiity of film, the regenerated cellulose has excellent light transmission and mechanical performance, the silk also has good mechanical performance. The method can obtain cellulose thick liquid by dissolving cellulose in room temperature. It has no contamination and its price is low, it is a kind of green manufacturing process.

The invention provides a preparation method for a super white ceramic vitrified tile produced by using magnesium aluminum silicate as a raw material. The super white ceramic vitrified tile comprises components of potassium feldspar, albite, calcined talc, black clay, a water reducing agent, a lithium feldspar, diopside, an intensifier, washed mud and quartz. The ultralow temperature fast firing vitrified tile belongs to a special ultralow temperature, high-strength, high-hardness, high abrasion-resistance, strong antifouling, low-radiation, environment-friendly, healthy and novel vitrified tile material and product. The technology can reduce firing temperature and shorten a firing period greatly and is favorable for energy conservation and emission reduction of ceramic industry, green manufacturing and low carbon production.

The invention relates to a surfacing reconstructed layer of a large hot-rolled supporting roll Cr4 and a method for repairing a roll. The surfacing reconstructed layer is prepared by surfacing prepared flux-cored wires of a bottoming layer, a transitional layer and a working layer on the surface of a base body of the roll layer by layer, and the bottoming layer, the transitional layer and the working layer are sequentially arranged in a surfacing manner from the surface of the base body to the outside. The method comprises the following specific steps: roll preparation, preparation of the flux-cored wires, roll preheating, preparation before welding, sequential surfacing of the bottoming layer, the transitional layer and the working layer, intermediate heat treatment, final heat treatment, machining, examining and shipment. The method is suitable for repairing large and ultra-large hot-rolled supporting rolls, and the service lives of the repaired rolls are close to and even equal to the service lives of new rolls. The cost-performance ratio of the reconstructed layer is high, base body bonding strength, high-temperature resistance, wear resistance and corrosion resistance are excellent, and the using performance of the roll can be improved. The surfacing reconstructed layer of the large hot-rolled supporting roll Cr4 and the method for repairing the roll conform to a green manufacturing technology of national circular economy and a stainable development strategy, and have a wide application prospect and an economic benefit.

The invention discloses an oral cavity dental implant reconstructable guide plate and a manufacturing method thereof. The oral cavity dental implant reconstructable guide plate consists of a movable drilling template and a personalized base plate; a designing and manufacturing method of the oral cavity dental implant reconstructable guide plate comprises the following steps: acquiring oral cavity CBCT of a patient; comprehensively evaluating the oral cavity situations of the patient; manufacturing and scanning a plaster model of an oral cavity part of the patient, matching plaster scanning data and CBCT data, and reconstructing three-dimensional models of teeth and bones; making a planting plan; analyzing the strength of an implant; designing a standard drilling template corresponding to a drilling bit of the drilling template; designing a personalized guide plate substrate; importing an implant body model into a computer to perform virtual planting; designing an implant denture; manufacturing the reconstructable guide plate. According to the oral cavity dental implant reconstructable guide plate and the manufacturing method thereof, the treatment time can be shortened by performing virtual planting by utilizing planting software; moreover, the survival rate of the dental implant is favourably improved; quick manufacturing and field reconstruction of a dental implant drilling and cutting guide plate are realized; a medical material is saved and the cost is also reduced through the use of the drilling template; the requirement of green manufacturing is met.

The invention discloses a synthesis method of a CQD (carbon quantum dot) quaternary ammonium salt cationic surfactant and belongs to the field of green manufacturing of fine chemicals. The synthesis method comprises steps as follows: citric acid is taken as a carbon source, a diamino compound with primary amino at one end and tertiary amino at the other end is taken as an N source, an N-doped CQDis synthesized with a hydrothermal method, the CQD is taken as a raw material and subjected to quaternarization with normal halogenated hydrocarbon in ethanol water, and the CQD quaternary ammonium salt cationic surfactant is prepared. The technological method is simple, a product separation method is simple, the preparation process is green, pollution-free and low in synthesis cost, and the prepared CQD quaternary ammonium salt cationic surfactant integrates surface activity, antibacterial activity and fluorescent brightening property and can be widely applied to fields of detergent preparation, bactericide preparation, fluorescent brightener compounding and the like.

The present invention provides a production method for an ultra low temperature rapid firing vitrification ceramic brick. In a blank entering ball mill step, low temperature ceramic mineral raw materials are mixed and poured into a ball mill to carry out wet grinding, wherein the low temperature ceramic mineral raw materials comprise a calcination material, lithium sand, black mud, a water reducing agent, a reinforcing agent and an auxiliary agent. The present invention relates to a production method for producing the ultra low temperature rapid firing vitrification brick by using the calcium magnesium silicate material and the tantalum-niobium tailings. The ultra low temperature rapid firing vitrification ceramic brick belongs to a special and novel vitrification brick material and a product, wherein the special and novel vitrification brick material has characteristics of ultra low temperature, high strength, high hardness, high wear resistance, strong pollution prevention, no radiation, environmental protection, and health. With the technology of the present invention, the firing temperature can be substantially reduced, the firing period can be substantially shortened, and the method provides good benefits for energy-saving emission reduction, green manufacturing and low carbon production of the ceramic industry.

The invention discloses a polymer powder for 3D printing and a preparation method of the polymer powder. The polymer powder comprises the following substances in parts by weight: 30-90 parts of main body molding resin, 10-60 parts of bonding resin, 0-10 parts of composite resin and 0-10 parts of powder leveling agent. The preparation method for preparing the powder comprises: blending the substances at room temperature and then sufficiently stirring till the substances are evenly mixed. The powder can be used for printing human body medical implant materials with good flexibility and medical appliances; when the powder is used for 3D printing, only deionized water is used as bonding solution, so that the process is simple and the cost is low; therefore, the 3D printing environment is environmental friendly and can meet a modern green manufacturing direction.

The invention discloses a large truck tire, in particular a large truck tire of polyurethane composite and a production method thereof. The tire of polyurethane composite comprises a wheel hub, a wheel hub board, a tire tread, an inner tube, and a filler between the tire tread and the inner tube. The invention is characterized in that the tire tread and a tire sidewall adopt casting polyurethane elastomers; a tread bracing layer is provided with four layers which are compounded from three layers of steel wire cords and a layer of aramid fibers through adhesive; a tire body cord layer is compounded from steel wire cords and aramid fibers; an inner liner layer is compounded from a chlorinated butyl rubber and a steel wire cord layer; the filler adopts at least one of the following two elastomers: a polyurethane elastomer with Shore hardness of A 45 and a polyurethane foaming elastomer with self crust. The invention has the advantages of wear resistance, low temperature performance, better elastic performance under high hardness, better uniformity of colloid due to fully automatic casting technology, more stable performance, tear resistance, strong performance of pealing resistance, and non pollution from three wastes during manufacturing; the invention belongs to a green manufacture technology.

The invention discloses a thread turning process parameter optimization method for green manufacturing, which comprises the steps of 1) determining optimization variables such as the cutting speed Vcand the feeding amount f; 2) establishing a multi-objective optimization function; 3) determining constraint conditions; 4) optimizing the objective function to obtain a Pareto optimal solution set thereof; 5) determining the weight of each target attribute according to an AHP (Analytic Hierarchy Process) and RS (Rough Set) based combined weight determination method, and obtaining an optimal solution meeting actual processing requirements from the optimal solution set in the step 4. In the application process of the method disclosed by the invention, parameters in the model can be determined firstly according to the actual condition, then the model is solved by adopting the method so as to obtain the cutting speed Vc and the feeding amount f when the carbon emission, noise emission and dust emission are synthetically optimized, and finally a purpose of reducing the carbon emission, noise remission and dust emission is achieved through controlling mechanical equipment.

The invention relates to a multi-target cutting parameter optimization method for green manufacturing. The method comprises the following steps that S1, according to the machining condition of a single working step in cutting, the cutting speed and the feeding amount serve as optimization variables, and a machining time optimization objective function, a machining greenization evaluation exponential function comprehensively considering machine tool energy consumption and cutting fluid consumption and a machining cost optimization objective function are established; S2, constraint conditions ofa multi-target cutting parameter optimization model are determined according to the performance of a numerical control machine tool and the surface machining quality requirement for a machined part;S3, the multi-target cutting parameter optimization model is constructed according to the optimization objective function in the S1 and the constraint conditions in the S2; and S4; optimization solution is carried out on the multi-target cutting parameter optimization model by utilizing an improved NSGA-II algorithm, and a Pareto optimal solution set of the multi-target cutting parameter optimization model is obtained. On the premise that smooth cutting machining is guaranteed, the resource utilization rate is increased, and negative influence on the environment is reduced.

The embodiment of the invention provides a pollution-free evaluation method in product manufacturing process and a device thereof. The method specifically comprises the following steps: establishing a pollution-free characteristic database for a processing technique of the product; acquiring resource environment attribute index values generated in the product manufacturing process from the database when the product manufacturing process needs pollution-free evaluation; and then judging whether the resource environment attribute index values reach preset standard values; if reaches, calling index values quantizing rule from the database, and analyzing and evaluating the resource environment attribute by a BP neural network. In such way, resource consumption and environmental impact condition in the product manufacturing process can be analyzed and evaluated, thus being capable of taking corresponding measures to reduce the negative environmental impact produced in the product manufacturing process, improving the resource utilization rate, and realizing pollution-free product manufacturing.

The present invention discloses a method for preparing specimens used in testing mechanical properties of thin-walled and small-diameter petroleum and natural gas pipelines, which comprises the following steps: (1) cutting specimens having width of W mm and thickness of B mm from the circumferential direction of thin-walled and small-diameter petroleum and natural gas pipelines to be tested; and (2) carrying out laser welding on two lengthening blocks on both sides of specimens to obtain test specimens, wherein the width of the lengthening block is L, the thickness of the lengthening block is larger than or equal to B, the sum of L, W and L is greater than or equal to the minimum length of the test specimens required for testing the tensile, impact, CTOD (crack tip opening displacement) fracture toughness or crack propagation rate. Mechanical properties data, which are uneasily acquired by conventional methods, can be measured by virtue of the method disclosed by the invention and have an important practical significance on improvement of the safety evaluation of petroleum and natural gas pipelines. The laser penetration fusion welding technology is applied in preparation of small specimens to effectively increase the utilization rate of specimens, thereby saving materials, saving energy and reducing consumption. The method disclosed by the invention has a nature of green manufacture.

The invention discloses a three-dimensional (3D) printing and manufacturing method of porous niobium oxide parts. The method comprises the steps of carrying out selective laser sintering (SLS) on niobium oxide powder to form niobium oxide parts of complicate shapes; carrying out molten salt electrolysis and deoxidization by taking the oxide parts as cathodes, restoring the niobium oxide parts to niobium parts, and keeping the primary shapes, so as to obtain the porous niobium parts of complicate shapes and realize the integrated manufacturing 'metallurgy-material-device'. According to the 3D printing and manufacturing method provided by the invention, the porous niobium parts of complicate shapes can be manufactured by providing the cheap niobium oxide parts without any mould; furthermore, the 3D printing and manufacturing method has the advantages of being simple and feasible in technological process, complicate in shape, low in cost, and green to manufacture.

The invention relates to a preparation method for a composite roll, in particular to the preparation method for a super wear-resistant composite roll. The super wear-resistant composite roll is manufactured by adopting the composite technology of a surfacing technology of self-fluxing alloy powder with super wear-resistant performance and an explosion hardening process or a laser surface hardening engineering technology. The roll consists of a roll core part and a roll working layer, wherein the roll working layer is prepared on the roll core part by a surfacing process; the roll core part is made of QT400-QT800-2 ductile iron and 235-450 cast steel; the composite material of the surface working layer comprises the following components of 42CrMo powder, 65 nickel alloy powder, nano-tungsten carbide powder, aluminum powder and graphite powder. The surface of the roll manufactured by the composite technology has super wear-resistant performance. Over 80 percent of the materials used by the roll can enter a cyclic remanufacturing process; the manufacturing process has the characteristic of green manufacturing. The forms of rolls comprise sheet rolls and profile rolls.

Disclosed is a combined manufacturing method of a titanium alloy curvature component with ribs. The combined manufacturing method comprises the first step of adopting additive manufacturing technology which includes but not limed to laser melting deposition modeling and electric beam fused deposition modeling, conducting additive manufacturing technology on a preset area of titanium alloy straight section bars of uniform cross section to obtain local reinforcing ribs and form titanium alloy straight section bars with ribs; the second steps of adopting section bar heating-stretching-bending technology to conduct heating and bending on the titanium alloy straight section bars with ribs through a power-on self-resistance, molding a required curvature outline and conducting online stress relation and cooling in a controlled temperature so as to obtain titanium alloy curve section bars with ribs; the third steps of controlling a little amount of numerical control machining on the titanium alloy curve section bars with ribs to obtain the titanium alloy curvature component that meets dimensional requirements. Through the three steps, material utilization rate during the manufacturing process of the titanium alloy curvature component can be sharply increased, forming accuracy is improved, and thus a low-cost and green manufacturing of the titanium alloy curvature component can be realized.

The invention relates to an investment cast shell crushing, grading and screening system comprising a vibration cleaning and shakeout mechanism, a grinding and crushing mechanism, a gear pair rolling mechanism and a grading and screening mechanism which are connected through a conveyer belt. When mould sand is cleared, an investment cast is arranged on the vibration cleaning and shakeout mechanism; the mould sand outside the cast is vibrated to a shakeout collection hopper, conveyed into the grinding and crushing mechanism and the gear pair rolling mechanism, so that large caked mould sand can be crushed; and the mould sand is conveyed to the grading and screening mechanism to be graded and collected according to the sizes of the mould sand particles after being crushed. According to the mould sand grading and screening system in the structure, an assembly line which carries out sand cleaning, shakeout, crushing and screening processes on the investment cast automatically, no manual operation is needed, so that the mechanical automation degree is high, the working efficiency and the reuse rate are greatly improved, the labor intensity of a worker is reduced, dust is not scattered, and green manufacturing, environmental protection and sustainable development are realized.

The invention relates to an electric spark milling method by mist, which pertains to special process technology domain. The invention takes mist as dielectric medium between work piece and instrument to make electrodischarge machining. Compared with gas and liquid medium, mist medium has a lower breakdown voltage and can reduce the cost of liquid, and with rotatable instrument pole it can accelerate decorporation of elaboration product. The invention has a fast process velocity and can produce product with good surface quality.

The invention discloses a thin-gauge high-performance ultrahigh-strength semi-hard steel belt and a production method thereof. The steel belt is prepared from the chemical components in percentage bymass: 0.15 to 0.20 percent of C, 0.90 to 1.20 percent of Mn, less than or equal to 0.015 percent of S, less than or equal to 0.020 percent of P, 0.05 to 0.10 percent of Si, 0.025 to 0.050 percent of Als, less than or equal to 0.0050 percent of N, 0.32 to 0.40 percent of Ceq, and the balance iron and inevitable impurities. The production method comprises the processes of smelting through a converter, ladle furnace (LF) refining, continuous casting, heating, rough rolling, finish rolling, cooling, reeling and cold rolling. According to the thin-gauge high-performance ultrahigh-strength semi-hardsteel belt and the production method thereof provided by the invention, by adopting the composition design of low carbon and conventional manganese, and through a cooling path and medium-temperaturereeling control, the obtained thin-gauge high-performance ultrahigh-strength semi-hard steel belt is suitable for producing cold roll forming thin-wall steel sections such as bus frameworks, truck edge beams and penetrating beams, so that the weight of a car body is reduced, the fuel oil consumption is reduced, and the product can be manufactured in a green way.

The invention discloses a main spindle hood of an electric spark moulding machine, comprising a main spindle hood body, a connecting pipeline, a medium purifying channel, a medium downlink channel upper port, a medium uplink channel upper port, a medium downlink channel, a medium downlink channel lower port, a medium uplink channel, a medium uplink channel lower port, an annular oil screen spraying channel, a main spindle connecting hole, a smoke purifying channel port and a smoke purifying channel. The main spindle hood of the electric spark moulding machine can circularly purify the electric spark processing media so as to guarantee the processing and moulding quality; and simultaneously an enclosed oil screen is formed in the moulding and processing region of the electric spark, and the harmful smoke generated by processing can be collected and purified through a smoke purifying port so as to eliminate the harmful ingredients in the discharged air, thus realizing green manufacturing.

The invention discloses a processing method for improving the mold unloading performance of a die, and the method comprises the following processes that: pretreatment is operated to the surface; proper alloy powder is chosen; the chosen alloy powder is pre-coated on a die forming surface; the die forming surface is irradiated by strong current pulsed electron beams to lead the alloy powder of the die forming surface to be melted under the radiation of electron-beam energy to obtain a surface mold unloading layer on the upper and the lower die forming surfaces; after being alloyed, the die is thermally treated. The processing method of improving the mold unloading performance of the die of the invention realizes the improvement of die self-mold unloading performance through the processing method, and replaces the original method of spraying and coating mold releasing agent on the die forming surface, thereby being in favor of eliminating the different degree pollution of the mold releasing agent to the product, the die and the environment, thereby the green manufacture can be realized. An alloying protective film, namely, a surface mold unloading layer on the die forming surface can decrease the attrition and the abrasion of the product to the die surface, and reduce the binding property of the product and the die material, thereby attaining the purpose for improving the die self-mold unloading performance.

The invention relates to the technical field of shoe material foaming midsoles, and in particular relates to a foaming shoe midsole material made of a TPEE material and a preparation process thereof. The foaming midsole material made of the TPEE material comprises the following raw materials: a thermoplastic polyester elastomer, a foaming agent, a nucleating agent, an antioxidant, a lubricating agent, a cross-linking agent and a cell stabilizer. The foaming shoe midsole material has the advantages that compared with the most common EVA foaming midsole, the thermoplastic polyester elastomer foaming material is excellent in fatigue resistance, and the midsole made of the thermoplastic polyester elastomer foaming material can still keep soft, cushioning performance and resilience for a long time after being repeatedly treaded; the TPEE foaming material adopted by the invention has excellent temperature resistance, and compared with a TPU foaming midsole, the thermoplastic polyester elastomer foaming material has the advantages that the density of the foamed material is smaller than that of TPU, the weight is light, the rebound rate is high, and the weather resistance is strong; the foaming shoe midsole material is non-toxic and odorless, and has favorable recyclability; no harmful carcinogenic substance is generated in the production process; and low-carbon, environment-friendly and green manufacturing is met, and cyclic recycling and sustainable development can be achieved.