92results about How to "Floating speed is fast" patented technology

The invention relates to a quality improving method for horizontal continuous casting blanks by applying complex field and the device, belonging to the technical field of preparation of metal material, in particular to the technology of applying complex electromagnetic field and ultrasonic field in the continuous casting process of metal casting blanks. The device is characterized in that a generator of inert gas is arranged at the center of the bottom of a holding furnace; a generator of traveling wave magnetic field is arranged on the side of the holding furnace; a power ultrasonic device is arranged on the holding furnace close to the water port; a restriction electromagnetic coil is arranged on the outer side of a crystallizer. The device has the advantages that: firstly, the production technology is simple, the operation is easy, and the efficiency is high; secondly; the disadvantages of easy broken in rolling and drawing process of casting blank due to more impurity and pores is solved; thirdly, the solidification structure of the casting blanks is uniform, the crystal grain is fine, and the casting blanks can be rolled directly at casting state. The quality improving method and the device are mainly used for the field of metal continuous casting.

The invention relates to a splash-proof floor tile which comprises a hollow rectangular floating tile. Flow guide holes are equidistantly formed in the side peripheral wall of the floating tile and cling to a bottom plate of the floating tile; a piston plate is movably mounted inside the floating tile, and the size of the piston plate is matched with that of the inner bottom surface of the floating tile; compression springs are fixedly mounted between the piston plate and a top plate of the floating tile; support columns are further fixed to the lower surface of the piston plate, vertically extend out of the bottom plate of the floating tile and are fixed onto a support plate. The splash-proof floor tile has the advantages that flow of accumulated water on the ground can be effectively guided by the floor tile, and the accumulated water can be effectively prevented from splashing.

The invention discloses a method for removing carbon black and high polymer in the preparation of acetylene by cracking natural gas with plasma. The method comprises the following steps: 1) the cracked gas from a gas generating process enters a hot water washing tower from a bottom charge end, performs the spray washing of hot water with the temperature of 60-130 DEG C and the absorption of porous packing and is discharged from a discharge end on the top of the hot water washing tower; 2) the gas leaving the hot water washing tower enters a single-stage electrostatic precipitator to perform single-stage electrostatic precipitation treatment; and 3) the treated gas enters a cold water washing tower from a bottom charge end, performs the spray cooling of water with the temperature of 20-40 DEG C and enters a gas holder for the post-treatment. By using the method, the carbon black and high polymer in the raw acetylene feed gas can be removed more thoroughly, the technological requirement of the preparation of acetylene by cracking natural gas with plasma can be satisfied; and the loss of acetylene can be reduced and the packing can be reused.

The invention discloses a double-wire middle value pulse MIG welding power system and a control method thereof. The double-wire middle value pulse MIG welding power system comprises a three-phase alternating current input power grid, a main machine power source, a slave machine power source, a man-machine interface and an arc load. A middle value pulse comprises a front middle value mode, a mediummiddle value mode, a rear middle value mode and a front, rear and middle value mixed mode. A base value stage mainly achieves a pilot arc effect, a middle value stage is used for melting a welding wire to form molten drops, peak stage currents are increased, melting of the welding wire is accelerated so that molten drops can be formed, electromagnetic force is increased, and the molten drops disengage from the welding wire at the final moment of the peak stage to enter a molten pool. By means of the system, the middle value pulse is used for accurately controlling the molten drop transition process, and the control precision is high; and due to different phase matching, a heat input process is controlled, welding deformation is reduced, the system adapts to welding of different materials,meanwhile, the three-stage pulse is used for conducting stirring on the molten pool, and the grain structure is refined.

An underwater robot can dive in the seabed and can scurry to the water surface in a high speed for receiving and transmitting information. The underwater robot can move fast in water, can perform dredging in a shoal and can reach the deep-sea bottom to sample core samples and valuable organisms, perform undersea transportation and the like, turning of the underwater robot is very flexible, and the main body of the underwater robot is a powerful pump like an abdominal cavity which can eat from the front portion and can perform discharging from the rear portion; a digging wheel is arranged in front of the pump, and a scribbing blade is like an arm and can perform padding and turning; rear driving wheels are like double feet and can walk; a driving cab and a self-control system are arranged above the pump, and operation can be performed according to information provided by an underwater monitor and an information transmitting and receiving device; and a lithium battery (or a fuel battery), a hydraulic oil tank, an oxygen tank and a hydraulic power system are arranged on two sides and the rear surface of the pump and serve as the heart and vessels of the robot, and a support plate is arranged on the lower portion and serves as the back of a human body. When the water is not deep, the robot can operate according to the information of a ship monitor provided by an underwater display in dredging, the cab can be descended, and debris flow can be stricken to a mud boat or ejected on the shore without any piling or pile pulling. Therefore, the underwater robot can dive to the seabed and can perform dredging.

The invention discloses a hardfacing electrode covering and an electrode containing the same. The covering is prepared from the following components in percentage by mass: 14 to 18 percent of boron carbide, 28 percent of atomized iron powder, 0 to 6 percent of atomized ferrosilicon, 0 to 41 percent of high-carbon ferro-chrome, 0 to 33 percent of micro-carbon ferro-chrome, 0 to 20 percent of ferroniobium, 0 to 8 percent of cobalt powder, 3 to 9 percent of graphite powder, 0 to 4 percent of medium-carbon ferromanganese, 0 to 4 percent of ferrovanadium, and 0 to 20 percent of chromium metal. The hardfacing electrode covering disclosed by the invention is low in melting point, high in melting speed, convenient to perform welding and attractive in molding; metal on a surfacing layer of the hardfacing electrode covering has high hardness, high wear resistance and a certain brittleness resistance; moreover, in the using process, the hardfacing electrode covering is relatively high in cost performance. Meanwhile, the invention further discloses the electrode containing the hardfacing electrode covering and a preparation method of the electrode.

The invention discloses a physical demulsifying and coalescing and oil-water separating method for an oil-water emulsion under micro-electric field effect, and relates to the technical fields such as petroleum, petrochemical, food, machining and shipping industries. The technical scheme adopted is as follows: oil drops of oily sewage float upward and are coalesced and absorbed on the lower surface of a coalescing plate under the effect of the micro-electric field between the lower surface of the oil-water coalescing plate and a bottom plate of a box body. The oil drops coalesced and expanding in volume float upward from an oil spill hole, so that the oil and water are effectively separated. According to the invention, micro emulsus drops are transferred, absorbed and coalesced, and float upward under the effect of the micro-electric field through a pure physical method, and finally oil and water are separated. The oil-water separation rate can reach over 98%.

The invention discloses a marine oily water disk aggregation and separation device, comprising a barrel body, wherein at least a first aggregation separator and a second aggregation separator are arranged in the barrel body; the first aggregation separator and the second aggregation separator are respectively positioned on the upper side and the lower side of a fluid guide hole plate; the periphery of the fluid guide hole plate are fixedly installed on the inner wall of the barrel body in a sealing manner; the middle position of the fluid guide hole plate is provided with a fluid guide throughhole; the top end of the first aggregation separator is provided with a top part cover plate, and a gap is left between the periphery of the top part cover plate and the inner wall of the barrel body; the bottom part of the second aggregation separator is provided with a fluid guide blind plate, and a gap is left between the periphery of the fluid guide blind plate and the inner wall of the barrel body; and the first aggregation separator and/or the second aggregation separator comprise/comprises a plurality of mutually superposed ripple separating discs. The separation device has the advantages of simple structure, convenient maintenance and manufacturing, and ideal oil-water separation effect, and is particularly applicable to marine oily water separation.

The invention relates to a chemical agent for removing excessively sprayed oil paint waste water and a preparation method of the chemical agent, a novel efficient paint mist flocculant is characterized by comprising an adhesive-eliminating agent A and a flocculant B in volume ratio of 0.5: (0.5-1), the adhesive-eliminating agent A is polysilicic acid modified tripolycyanamide prepared from tripolycyanamide, alkali metal silicate, aldehydes and an auxiliary C, the flocculant B is a polymer formed by non-ionic monomers through polymerization. The paint mist flocculant prepared by the method is low in free formaldehyde content, low in cost and high in paint mist removing rate.

An oil-water separator for the cabin bottom to separate micro floating substance is composed of the primary treating unit for gravitationally separating oil out and removing the micro floating substance (mud and sand particles) by sand filter, and the secondary treating unit for gravitationally separating out the residual oil, collecting them by collector, and discharging the treated water.

The invention discloses a method for separating and processing marine oily water and a processing device thereof. The method comprises the following steps: preheating treatment is carried out on bilgeoily water to 48-58 DEG C; oil drop aggregation and oil-water gravity separation are carried out to separate out waste oil and separate water; the separated water is filtered into filtered water by afilter-material filter device and then is sent to a separation process device; concentrated solution is recovered; and infiltration water is discharged outside cabin. The device for processing marineoily water of the invention comprises a heater, a gravity separator, a suction pump, a filter-material filter and a membrane processor communicated sequentially; the oily water inlet of the heater isconnected to a bilge oily water station; and the infiltration water outlet of the membrane processor is communicated with a sea valve by a puff pipe. The invention not only can realize separation process of high-density residuum oily water, but also can realize effective separation process of emulsion in oily water, so as to meet strict emission standard, thereby being widely used in separation process of bilge oily water.

The invention discloses a coating method of a positive/ negative electrode plate of a lithium ion battery and a positive/ negative electrode plate. The coating method comprises the step of conveying positive electrode size or negative electrode size to a coating machine to coat, wherein a drying box of the coating machine is divided into a front high temperature area, a medium low pressure area and a rear high temperature area; the temperature and circulating air quantity of each section are shown as follows: the temperature of the drying box in the front high temperature section is 125 to 135 DEG C and the circulating air quantity is 35 to 30Hz; the temperature of the drying box in the medium low temperature section is 105 to 125 DEG C and less than that of the drying box at the front high temperature section, and the circulating air quantity is 30 to 45Hz; the temperature of the drying box in the rear high temperature section is 125 to 135 DEG C and more than that of the drying box at the medium low temperature section, and the circulating air quantity is 35 to 50Hz. With the adoption of the coating method, the resistivity of the plate can be reduced; the conductivity can be improved; the inner resistance of the battery can be reduced; the charge-discharge rate and circulating performance of the battery can be improved.

The invention discloses a polysilicic acid modified melamine coagulant for paint fog and a preparation method thereof. The polysilicic acid modified melamine coagulant is characterized by comprising an agent A and an agent B which are separately stored, wherein the mass ratio of the agent A to the agent B is 1: (1-2), the agent A is obtained by using polysilicic acid for modifying a cross-linked polymer generated through condensation reaction of melamine, urea and aldehydes and has a viscosity eliminating effect, and the agent B is a polymer formed through polymerization reaction of urea, nonionic monomers and cationic monomers and has a condensation effect. The coagulant for paint fog is low in cost and high in removal rate of the paint fog.

The invention provides a laser penetration fusion welding device assisted by cooperation of double magnetic fields and ultrasonic waves. The laser penetration fusion welding device comprises a base, a workbench, a mechanical arm, a laser welding machine, a moving mechanism, a welding table, an ultrasonic vibration machine, an alternating electromagnetic field coil, an alternating electromagnetic field power source, a constant electromagnetic field coil and a constant electromagnetic field power source. By utilizing the combined action of ultrasonic waves and the electromagnetic fields, escape of gas in a molten pool is accelerated, and the pore defect is inhibited; meanwhile, by means of the coupling effect of ultrasonic impact force and magnetic field electromagnetic force, intermetallic brittle compounds and coarse grains are broken, the number of the intermetallic brittle compounds is reduced, the grains are refined, and the welding quality is improved. A laser penetration fusion welding heat transfer and mass transfer mathematical model under the synergistic effect of a magnetic field and ultrasonic waves is established, the heat transfer and flowing rules of the molten pool in the welding process are revealed, the influence of the ultrasonic waves and an alternating magnetic field on the bubble floating rate and the influence of a stable magnetic field on the molten pool solidification rate are researched, and the mechanism of reducing the pore defect is mainly analyzed.

The invention relates to the technical field of excavator bucket teeth, in particular to an abrasion-resistant excavator bucket tooth and a preparation method thereof. The abrasion-resistant excavatorbucket tooth comprises, by weight, 1.2-1.6% of Mn, 0.6-0.9% of Si, 0.30-0.37% of C, 0-0.008% of S, 0-0.008% of P, 0.002-0.005% of B, 0.01-0.02% of Re, 0.03-0.05% of Al, 0.5-0.8% of Cr, 0.02-0.05% ofMo and the balance Fe and inevitable impurities. The preparation method comprises the steps of preparation of a die, preheating before melting and melting of all raw materials, and argon blowing operation is conducted in the process. The weight ratio of S is less than or equal to 0.008%, the weight ratio of P is less than or equal to 0.008%, thus, the surface structure of a formed casting is evenly distributed lath martensite, the structure is compact, and the mechanical performance of the casting is improved; argon blowing operation is conducted from the furnace bottom of a medium-frequency induction furnace, argon enters molten steel through furnace bottom air bricks to form lots of bubbles, the degassing area is effectively increased, argon flow continuously stirs the molten steel, finescattered inclusions are coagulated, large-particle impurities are formed, the degassing inclusion removing efficiency is improved, and the combination properties of the casting are improved.

The invention relates to the field of underwater robots, and provides an underwater robot emergency protecting method, device and equipment, and a storing medium. The emergency protecting device is arranged on an underwater robot includes a locating module, a storing module, a comparing module, a control module, a switch module, a power supply device and a floating module. The emergency protectingdevice completely independent of a control system of the underwater robot, the power supply device, the control module, the locating module and the switch module do not use underwater robot equipment, three structures of the floating device in the emergency protecting device are provided, contact with the underwater robot system is reduced to the utmost extent, and operation of an emergency protecting system is ensured.

The invention provides a carbide slag slurry clear liquid recycling treatment system and a treatment process. The carbide slag slurry clear liquid recycling treatment system comprises a mounting bottom plate, supporting legs, supporting columns, a recycling box, a mixing mechanism and an impurity removal mechanism, and can solve the problems that a container for containing accumulated carbide slag slurry is difficult to be in a relatively sealed state during the carbide slag slurry clear liquid recycling treatment operation, the probability of permeation and liquid leakage of the carbide slag slurry is increased, the carbide slag slurry in a solid-liquid mixed state is difficult to disperse and flatten, the separation degree between impurities and clear liquid is reduced, floating impurities above the clear liquid are difficult to remove and separate quickly after solid-liquid separation of the carbide slag slurry, and solid residues accumulated at the bottom are more difficult to discharge synchronously after the clear liquid is discharged.

The invention discloses a device for purifying and stirring non-ferrous metal liquid, which comprises a support, a rolling wheel arranged under the support, a handle at the tail end of the support and the like, wherein a degassing pipe is arranged on the support; the tail end of the degassing pipe is connected with a graphite rod which is provided with an air vent; a multi-level heating device isarranged on the degassing pipe; the degassing pipe is communicated with a vent control valve assembly in series; the vent control valve assembly comprises a plurality of vent valves in parallel mutually; an air inlet of the vent control valve assembly is communicated with an inert gas conduit; and a flowmeter, a circuit control device for controlling the ventilation volume and the heating volume and a control panel are arranged at appropriate positions of the support. Compared with the products in the prior art, the cast molding non-ferrous metal ingot which is refined by utilizing the deviceprovided by the invention has the advantages that: the hydrogen content of alloy is obviously reduced and can reach to 0.10cc/100g aluminium; the rate of removing impurities in the alloy, that is an impurity removing rate can be enhanced by 10% compared with that of the products processed by using the prior art; and as the hydrogen content and the impurity are reduced, the comprehensive property of the alloy can be enhanced by 10% compared with the prior art.

The invention provides a treatment method of offshore oil drilling wastewater. The method comprises the following steps: heating the drilling wastewater and performing physical demulsification; regulating the pH of the wastewater to alkalinity; sequentially adding a coagulant and coagulant aids into the wastewater to promote flocculation of oil sludge particles and improve the dewatering performance; separating solid and liquid through a centrifugal separating device to obtain separated sludge and separated liquid; adding the coagulant and fully mixing the coagulant with the separating liquid;compressing a double electrode layer to condensate oil droplets; charging air into the wastewater, wherein bubbles are adhered to the oil droplets, so that the floating speed of the oil droplets is increased, and solid and liquid separation is achieved; charging ozone to remove organic substances in the wastewater and discolor; adsorbing through activated carbon to further decrease the content ofthe organic substances in the wastewater so as to reduce the pollution of the organic pollutants to a reverse osmosis membrane; and filtering the treated purified wastewater through a reverse osmosissystem by utilizing a membrane so as to remove soluble solid in the wastewater and reach the wastewater drainage standard. The method is obvious in treatment effect.

The invention discloses a beacon for positioning and self-rescue of an autonomous underwater vehicle, and belongs to the field of underwater vehicles. The device comprises a communication cabin, an electronic cabin, a base, a steamed bun cover and the like, the communication cabin is in sealed connection with the electronic cabin, a GPS module, a circuit board, a battery and the like are arranged in the communication cabin, an electromagnet is fixed to an inner cavity of the bottom end of the electronic cabin, and a magnetic piece is placed in an inner cavity of a magnetic base, connected with the base and fixed to the top of the autonomous underwater vehicle. The beacon is fixed to the base through a bearing to make circumferential movement, the fishing line is wound in the line winding groove, one end of the fishing line is connected with the communication cabin, and the beacon is pulled by the fishing line to be separated from the aircraft after being released within preset time and floats out of the water surface to share real-time position information. And the underwater detection safety of the aircraft is improved.