32results about How to "Meet the technical requirements of the process" patented technology

The invention discloses an air cylinder cover bolt screwing process. The process includes the following steps: (1), pretightening, namely using a first screwing tool to enable pretightening moment of air cylinder cover bolts to become initial moment by tightening; (2), marking a starting point, namely selecting any side edge on an air cylinder cover bolt head as a rotating reference edge, and marking a rotating reference mark and a starting point mark on the side edge and a position, corresponding to the side edge, on the top surface of an air cylinder cover at the same time through a marking tool; (3), marking an end point, namely by taking the rotating reference edge as a starting point, calculating an end point position where the corresponding rotating reference edge is positioned after each air cylinder cover bolt is screwed, and marking an end point mark at a corresponding position on the top face of the air cylinder cover; (4), tightening, namely screwing the air cylinder cover bolts through a second screwing tool to enable the rotating reference edges of the air cylinder cover bolts to rotate to positions corresponding to the end point marks. The air cylinder cover bolt screwing process is accurate in rotating angle, needless of other detecting and measuring tools, simple in operate and high in practicability.

An apparatus for carrying out mass transfer processes with high-viscosity liquids is described, particularly for boiling down and / or devolatilizing polymer melts, comprising at least a vertically arranged vessel (1) having a feeder means (4) for the liquid to be treated, an outlet (7) for volatile components and an outlet (6) for the treated liquid, the feeder means (4) being equipped with a distributor element (3) having a multiplicity of orifices (8, 10) for subdividing the high-viscosity liquid to be treated into a multiplicity of individual streams, characterized in that essentially vertically arranged wire loops (2) are disposed in the vicinity of the orifices (8, 10), along which wire loops the high-viscosity liquid runs off under the action of gravity.

The invention relates to the technical field of coating, and discloses water-based cold cut road marking coating which comprises the following components in parts by weight: 4.87 parts of water, 0.03 part of a fungicide, 1.5 parts of a water-based wax emulsion, 3 parts of ethanol, 0.4 part of a water-based dispersant, 27 parts of a water-based acrylic emulsion, 1-2 parts of organic bentonite, 1 part of a water-based drier, 5-8 parts of a pigment, 15 parts of a 40-60 mesh of glass bead, 30 parts of a 80-120 mesh of glass bead, 8.2 parts of white corundum, and 3 parts of a coalescing agent. The invention further discloses a preparation method of the water-based cold cut road marking coating. The preparation method comprises the step of uniformly mixing all the components. The water-based cold cut road marking coating combines the advantages of solvent marking coating and heat fusing marking coating, such as convenient and fast construction, environment protection, no pollution, ideal marking thickness, high drying speed and long service life, and is an ideal product replacing the solvent marking coating and the heat fusing marking coating.

The invention relates to a lead melting copper removal refining process for an industrial frequency coreless-type electric induction furnace. The process comprises the following steps: heating and melting a lead bullion raw material through the industrial frequency coreless-type electric induction furnace, pressing slag, and performing quick cooling to liquate copper from lead bullion; injecting the lead bullion obtained after copper removal into an anode casting unit to cast an anode plate, putting a lead anode plate into an electrolytic tank, applying direct current, and liquating anode lead on a cathode after the anode lead forms lead ions and enters an electrolyte; melting the liquated lead through the industrial frequency coreless-type electric induction furnace, sequentially performing oxidation refining and alkaline refining, dredging the slag, and then injecting a lead solution into a pouring unit to obtain an electrolytic lead ingot and oxidized slag; pumping the lead solution after slag dredging into a cathode sheet unit to enable a lead-solution-adhered roller to rotate so as to obtain a cathode lead sheet. The lead melting copper removal refining process for the industrial frequency coreless-type electric induction furnace is respectively applied to the working procedures such as lead melting copper removal, liquated lead refining ingot casting and cathode sheet manufacturing with electric energy, which is conveniently and easily obtained, through the industrial frequency coreless-type electric induction furnace, and has the advantages of reasonable process, low equipment investment, low energy consumption, great economic benefit, good environment-friendly effect and the like.

The invention discloses an air cylinder cover bolt screwing process. The process includes the following steps: (1), pretightening, namely using a first screwing tool to enable pretightening moment of air cylinder cover bolts to become initial moment by tightening; (2), marking a starting point, namely selecting any side edge on an air cylinder cover bolt head as a rotating reference edge, and marking a rotating reference mark and a starting point mark on the side edge and a position, corresponding to the side edge, on the top surface of an air cylinder cover at the same time through a marking tool; (3), marking an end point, namely by taking the rotating reference edge as a starting point, calculating an end point position where the corresponding rotating reference edge is positioned after each air cylinder cover bolt is screwed, and marking an end point mark at a corresponding position on the top face of the air cylinder cover; (4), tightening, namely screwing the air cylinder cover bolts through a second screwing tool to enable the rotating reference edges of the air cylinder cover bolts to rotate to positions corresponding to the end point marks. The air cylinder cover bolt screwing process is accurate in rotating angle, needless of other detecting and measuring tools, simple in operate and high in practicability.

The invention provides a spiral piece flow guiding type phase separation device. The spiral piece flow guiding type phase separation device comprises a separation tube. The separation tube is sequentially divided into a mixing section, a swirl section, a separation section and a discharging section according to effect regions, wherein the mixing section is internally provided with a static mixer which is used for fully mixing input liquid; a swirler is installed in the swirl section; the liquid passing the swirl section can be fully separated into an inner swirl field and an outer swirl field under the action of the centrifugal force in the separation section; and the discharging section comprises a heavy-phase discharging tube which is located at the end of the separation tube and a light-phase discharging tube of which one end is inserted into the swirl section along the axis line of the separation section and the other end penetrates through the side wall of the separation tube. The spiral piece flow guiding type phase separation device has the advantages of being small in device size, light in weight, high in separation efficiency and the like and is applicable to various occasions where two-phase mixed fluid different in density needs to be separated in the industrial production process, so that the technical requirement of the technological process is met, product purification is completed or useful raw materials are recycled, and the industrial application prospects are good.

The invention relates to a technology for treating steel mill converter gas dedusting water by adopting a low hardness method, which has the steps: wastewater from a converter gas washing tower enters an elevated tank, and an inorganic coagulant is added to the water body inside the elevated tank; an outlet of the elevated tank passes through a coarse granule separating machine which then recovers the coarse granule; the effluent of the coarse granule separating machine enters a slant plate sedimentation tank; an organic coagulant and a calcium reducing agent are added to the water body in the slant plate sedimentation tank; the sludge in the slant plate sedimentation tank is dewatered and reused; the effluent of the slant plate sedimentation tank enters a hot pond; an efficient sale-inhibition dispersion agent is added to the water body in the hot pond; and finally, the effluent of the hot pond is cooled by a cooling tower, enters a water cooling pond and is recycled to the convertergas washing tower for use. The technology has the advantages of improving water treatment efficiency, reducing water treatment cost, improving the cyclic utilization rate of the wastewater to 98 percent, ensuring zero wastewater efflux of the entire system and reducing water consumption per ton steel and wastewater discharge per ton steel, thus realizing the clean production of steel enterprises.

The present invention provides a laser-guided electrospinning direct writing device capable of realizing long-time controllable preparation and precise positioning of single uniform micro / nanostructure. The device is provided with a controller, a high-voltage relay, an electrostatic high-voltage [power] source, a hollow nozzle, a collimating focusing lens set, optical fibers, a sealing adjusting part, a laser, a solution feed pump, a solution feed pipe, a collecting board and a motion platform, wherein the controller is connected with the high-voltage relay; ends of the high-voltage relay arerespectively connected with the electrostatic high-voltage [power] source, the collecting board and a conductor nozzle arranged at the front end of the hollow nozzle; the sealing adjusting part is ina sealing connection with the rear end of the hollow nozzle; the optical fibers pass through the center of the sealing adjusting part and are fixedly connected with the sealing adjusting part; the collimating focusing lens set is arranged at the front end of the optical fibers; the rear end of the optical fibers comes out of the hollow nozzle and is connected with the laser; the solution feed pump is communicated with the hollow nozzle through the solution feed pipe; and the collecting board is fixed on the motion platform and faces the hollow nozzle. The laser constraints the disordered motion of spinning jet flow and guides the spinning jet flow to deposit at the laser spot of the collecting board.

The invention provides a left wheel popup box type porous pull-down plug graphite water gap device of an electromagnetic slag smelter. The left wheel popup box type porous pull-down plug graphite water gap device of the electromagnetic slag smelter structurally comprises a moving arm, a plug shifting arm, a plug shifting air cylinder, a pin shaft, a fixed frame, a rotating shaft, a plug pushing air cylinder, a graphite water gap, a graphite plug and a porous cone. The left wheel popup box type porous pull-down plug graphite water gap device of the electromagnetic slag smelter has the advantages of achieving the effects that the blocking of high temperature slag in base flow of an electromagnetic induction slag smelter is relieved when the flow is open, and the flow is controlled at a constant temperature. Besides, the technological requirements of rock wool production are met, and a bottleneck is broken for the production of high quality rock wool. The designed bottom leakage deslagging water gap ensures flow accuracy, can be opened and closed at will, and does not waste melts. The energy consumption is low, thermal efficiency is high, the amount of waste residue is small, the fiber forming rate is high, and the cost advantage is obvious. The electromagnetic slag smelter is not only excellent in temperature rise and regulation performance, heat preservation performance and hardening and tempering performance, but also high in storage capacity, thereby laying a good foundation for scale production. The left wheel popup box type porous pull-down plug graphite water gap device has the advantages of being controllable in high temperature liquid state slag flow, smooth, free of blocking, safe, reliable, convenient to use and efficient.

The invention relates to a photovoltaic module lamination room, lamination equipment and lamination method. A photovoltaic module lamination chamber, comprising: an upper chamber casing; a lower chamber casing, which can be airtightly connected with the upper chamber casing, and has an air extraction hole at the bottom; a heating plate, arranged in the lower chamber casing, And do not cover the air extraction holes; laminate the lower cloth, made of airtight material, fixed on the lower chamber casing and cover the heating plate, for placing photovoltaic modules, and do not cover the air extraction holes; and lamination The upper cloth is made of an air-tight material, fixed in the casing of the upper chamber, and can cover the suction hole to generate pressure on the photovoltaic module when the lamination chamber is under negative pressure. By adjusting the structure of the equipment, the lamination chamber can avoid the use of silica gel plates.

A constant angle constant pressure automatic compensation feeding device comprises a base plate, a grinding assembly, an angle adjusting assembly and a compensation feeding assembly. The compensation feeding assembly solves the problem that a grinding wheel is difficult to feed automatically and accurately in a traditional method for grinding a cutter belt edge. The compensation feeding assembly is good in operability, simple in angle adjustment and capable of meeting the process technical requirement for producing a high-accuracy cutter belt, enables high-accuracy grinding of the cutter belt edge to be simple and controllable and is easy to popularize and apply. In the service life duration of the grinding wheel, manual intervention or intervention in other modes are not required. By means of a compensation feeding method for the constant angle constant pressure automatic compensation feeding device, the sharpness of the cutter belt edge is greatly improved, a perfect cutter belt edge shape is achieved, the surface roughness grade of the edge is greatly improved, and the mirror face grade requirement can be met.

The invention discloses a process integration method for improving multi-step polysilicon etching damage of split-gate flash memory, comprising: step S1: providing a silicon-based substrate, and forming a split-gate flash memory device thereon; step S2: in the device preparation process, Forming a silicon nitride layer, and exposing the active area where local silicon oxidation needs to be formed in the subsequent process; step S3: performing dry etching on the silicon nitride layer to form a silicon nitride sidewall structure, and setting the active area Etching the groove; step S4: performing a silicon oxidation process on the exposed area of ​​the active region to form a silicon dioxide barrier layer; step S5: removing the silicon nitride sidewall structure, and performing subsequent polysilicon growth and etching processes. The invention can effectively avoid the etching damage of the active area caused by the multi-step polysilicon etching in the divided-gate structure flash memory, improve the stability of the overall process, and the process is simple and conveniently embedded into the existing process flow, and greatly reduces the The risk of etching damage in the active area also meets the technical requirements of FAB and is worthy of popularization and application.