39results about How to "Solve usage requirements" patented technology

The invention discloses a three-dimensional porous copper-silicon-carbon composite integrated electrode and a preparation method thereof. The preparation method comprises the following steps: preparing a copper silicon alloy from copper and silicon through a simple ball milling method, preparing a precursor through a nonsolvent-induced phase separation method combined with an organic film, preparing a three-dimensional porous copper-silicon film with certain toughness and mechanical strength through a solid phase sintering method of powder metallurgy, growing graphene and carbon nanotubes through a chemical vapor deposition method, and controlling the growth of graphene and carbon nanotubes by controlling temperature, gas intake time and an acetylene flow rate, so as to finally prepare thecopper-silicon-carbon composite integrated electrode. The three-dimensional porous structure can provide sufficient space for the volume expansion of silicon during the cycle process, and the graphene and carbon nanotubes with large specific surface area can form a stable SEI film, so as to prevent the pulverization and crushing of an electrode material, and finally maintain a stable electrochemical cycle. The three-dimensional porous copper-silicon-carbon composite integrated electrode and the preparation method thereof have wide practical application.

The invention discloses a welded steel tube for a carrier roller and a manufacturing method thereof. The welded steel tube comprises the compositions of, by mass, 0.050%-0.150% of C, 0.05%-0.26% of Si, 0.5%-1.50% of Mn, less than or equal to 0.010% of P, less than or equal to 0.005% of S, 0.02%-0.05% of Al, 0.1%-0.5% of Cr, 0.01%-0.05% of Nb, 0.01%-0.05% of V, 0.01%-0.05% of Ti and the balance Feand unavoidable impurities, a carbon equivalent Ceq is less than or equal to 0.4%, and a cold crack sensitivity index Pcm is less than or equal to 0.2%. The technical problems that machinability and the usage requirements of the welded steel tube for the carrier roller are inconsistent in the prior art, forming precision control is insufficient and the production requirements of the carrier rollercannot be met are solved. The technical effects that chemical elements of reasonable proportions are used, excellent cold-forming property and welding properties are achieved, the cracking of base metal or weld joints in pipe making is avoided effectively, and through reasonable hot rolling process design, the finished steel coil of hot rolling strip used for produced carrier rollers has a good shape and surface quality, good formability and abrasion resistance to adapt to the processing requirements of welded steel tubes used for the carrier rollers and meet the requirements for the use of welded steel tubes for the carrier rollers.

The invention belongs to the technical field of welding, and particularly relates to a welding method of non-preheating before welding and non-heat-treatment after welding of a V-N microalloying Q550D medium plate. Through selection of reasonable welding wires and optimization of welding parameters, the welding technology of non-preheating before welding and non-heat-treatment after welding is developed; a VN precipitated phase in austenite of V-N microalloying steel is used for promoting the acicular ferrite nucleation action, the toughness performance of a welding heat affected zone is improved, and the welding technology has the important significance in applying and popularizing of the V-N steel.

The invention relates to a preparation method of nano calcium carbonate for single-component MS (modified silicone) glue and solves the problem that nano calcium carbonate applied to single-componentMS glue cannot balance moisture, oil suction, whiteness, dispersity, reinforcement and the like. High-activity limestone is combined with the advantages of a high gravity reactor, fast and low reactions are combined, and regular cubic nano calcium carbonate is prepared which is coated with a composite modifier; traditional thermal drying and vacuum low-temperature drying are combined so that properties of the nano calcium carbonate are more satisfactory to the requirement on the application of single-component MS glue. The nano calcium carbonate for single-component MS glue has low moisture content, small particle size, large BET (Brunauer, Emmett and Teller) surface area, high whiteness, low oil absorption and good dispersion convenience, has high filling quantity, high reinforcement, good storage stability and high whiteness for MS glue, and is suitable for mass use in indoor decoration.

The invention relates to the field of chemical engineering, and particularly discloses a pipeline thermal insulation material as well as a preparation method and the application thereof. The pipelinethermal insulation material comprises a component A and a component B, the component B is polymerized diphenylmethane diisocyanate, and the raw materials of the component A comprise a plurality of polyols, n-pentane, a catalyst, a foam stabilizer, water and the like; the n-pentane is adopted as a foaming agent, the environment-friendly requirement is met, meanwhile, through selection of polyhydricalcohols and other auxiliaries, when the obtained pipeline heat preservation material is used, formed pipeline heat preservation foam is high in binding power with a base material, excellent in highand low temperature resistance and excellent in heat preservation performance, and the heat preservation using and environment-friendly requirements of a large-caliber pipeline are completely met; thepolyurethane composite material solves the problem that the existing polyurethane composite material for pipeline heat preservation can not completely meet the use performance requirement and the environment-friendly requirement of large-caliber pipeline heat preservation at the same time. The preparation method provided by the invention is simple and has a wide market prospect.

The invention belongs to the technical field of application of laboratory instruments and particularly discloses a PH value tester applied to laboratories. The tester comprises a casing, a hanging buckle and a groove which are formed in two ends of the casing respectively as well as a power supply, a liquid crystal display, an information processing module, an early warning module and a glass electrode which are arranged in the casing respectively, wherein the power supply, the liquid crystal display, the early warning module and the glass electrode are connected with the information processing module. The PH value tester applied to the laboratories has the benefits as follows: 1, the product is reasonable in designed structure, attractive and elegant in appearance, high in test efficiency, precision in test and long in service life; 2, during usage, the friction force with a hand is increased by the aid of a handheld part on the casing, the tester is stably picked up or placed down (that is, vibration during usage is reduced), and the safety of the glass electrode is effectively guaranteed; 3, by the aid of a fluorescent layer, the requirement for usage in an outdoor dark environment is effectively met, and the application range is wide.

The invention discloses a horizontal bagging machine, which comprises a mesh belt conveyor, a motor driving mechanism, a steel framework machine frame, a cylinder material flattening mechanism, a cylinder bag opening mechanism, a cylinder horizontal material pushing mechanism and a belt circulation operation conveying mechanism, wherein the motor driving mechanism is arranged at the end part of the bagging machine, the steel framework machine frame is arranged on the mesh belt conveyor, the cylinder material flattening mechanism and the cylinder horizontal material pushing mechanism are arranged on the steel framework machine frame, and the belt circulation operation conveying mechanism is vertically connected with the mesh belt conveyor. The horizontal bagging machine has the advantages that the quantity quantitative requirement of cylindrical materials and the use requirement of horizontal bagging material conveying are met, the modular mesh belt circulation operation conveying adopting the servo motor driving and the baffle plate is adopted according to the quantity quantitative requirement of the cylindrical materials, the cylinder bag opening is adopted according to the use requirement of the horizontal bagging material conveying, the cylinder material flattening and the cylinder horizontal material pushing forms are adopted, and bagged finished products are conveyed through belt circulation operation.

The invention discloses a numerical control machine tool convenient to clean and wash. The numerical control machine tool convenient to clean and wash comprises a numerical control machine tool base,wherein the outer surface of the upper end of the numerical control machine tool base is provided with a waste box, the outer surface of the upper end of the waste box is provided with a numerical control machine tool case, the outer surface of the front end of the numerical control machine tool case is provided with a controller, one side of the numerical control machine tool case is provided with a machine door, one side of the machine door is provided with a numerical control machine tool housing, and the outer surface of the front end of the machine door is movably provided with a protective ring. The numerical control machine tool convenient to clean and wash is provided with a rotary shaft, a fan and a controller, can provide convenience for a user to clean transparent plastic on theinner side of the machine door, can blow grains produced in the part machining process of the numerical control machine tool to the waste box, reduces the possibility that an operator is in contact with the grains, can also more visually show the running state of the machine tool and the machining state of articles and brings a better use prospect.

The invention discloses a motor used for an electric bicycle. The motor comprises a central shaft, a silicon-steel sheet disposed outside the central shaft, a plurality of silicon-steel sheet grooves disposed on the silicon-steel sheet, magnetic pole pairs sleeved outside the silicon-steel sheet, a cylinder disposed outside the magnetic pole pairs, and a power line connected with the central shaft. A diameter of the silicon-steel sheet is 70-180mm. The motor is characterized by simple structure and convenient installation, and operating requirements of a small wheel bicycle are met. The motor can satisfy electric bicycle requirements of different types and sizes, and prolongs service life of the electric bicycle motor.

A mulberry tree supporting device comprises a supporting device main body, a plurality of groups of support rods are fixedly installed on the outer surface of the upper end of the supporting device main body through internal and external threads, a support disk is fixedly installed on the outer surface of the upper end of a plurality of groups of the support rods through internal and external threads, one side of the support disk is arranged above the upper end of the support device main body, support inclined bars are arranged on the outer surface, and one end of the support inclined bar is fixedly installed with a side bar through internal and external threads. The invention relates to a mulberry tree supporting device, firstly, it is possible to increase the stability of the entire supporting device, the impact of gale weather on the supporting device is reduced, and finally, a plurality of groups of mulberry tree branches are simultaneously supported, one supporting device can satisfy the need of one mulberry tree, the material is saved, the height of the supporting device can be adjusted according to the height of the mulberry tree, the use orientation of the device can be enlarged, the state of the mulberry tree can be maintained, the deflection of the mulberry tree can be avoided, and a better use prospect can be brought.

The invention discloses a combined nitrogen and phosphorus removal optimization process which comprises an anaerobic tank, an anoxic tank, an aerobic tank and a secondary sedimentation tank which arecommunicated in sequence, and the secondary sedimentation tank is connected with the anaerobic tank; the aerobic tank is composed of an aeration tank, an ecological oxygen production system, a sewagelifting system, an oxygen concentration monitoring system and an aeration system; the sewage lifting system pumps part of sewage in the aeration tank to the ecological oxygen generation system, and the sewage treated by the ecological oxygen generation system flows back to the aeration tank again; the ecological oxygen generation system is used for hydroponically cultivating green plants by utilizing sewage and enriching oxygen released by the green plants; the oxygen concentration monitoring system monitors the oxygen concentration in the ecological oxygen generation system and transmits themonitoring information to the aeration system; the aeration system is used for supplying air into the aeration tank; and the aeration system selects ambient air or air in the ecological oxygen generation system as an air source according to the concentration of oxygen in the ecological oxygen generation system. The nitrogen and phosphorus removal effect of sewage treatment can be effectively improved, and the process has the advantages of being high in automation degree and convenient to manage and use.