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.

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 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.

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.