9results about How to "Prevent corrosion" patented technology

The present application discloses an anti-rust water-based paint for AGV forklift and a preparation method thereof, the water-based paint comprises components A, B and C, component A comprises: water-based epoxy resin, defoamer, leveling agent, wetting agent, dispersant, wear-resistant filler, rust inhibitor, anti-settling agent, deionized water; component B comprises curing agent and water; component C is zinc powder; the water-based epoxy resin is prepared by dispersing a main epoxy resin and an organosilicon-modified epoxy resin in an emulsifier solution, the main epoxy resin is a bisphenol F type epoxy resin, and the organosilicon-modified epoxy resin is prepared by reacting bisphenol A type epoxy resin, diphenyl dihydroxy silane, and silane-modified polyether under the catalysis of an organotin catalyst. The water-based paint of the present application has excellent comprehensive properties, and its paint film is superior in flexibility, hardness, low temperature resistance and wear resistance.

The application discloses a kind of vacuum brazing methods of conical honeycomb inner ring assembly, S1: make the conical honeycomb ring of interference fit with the inner surface of support piece, the length interference amount of honeycomb ring is 1-3mm;S2: polishing cleaning;S3: filling adhesive tape brazing material;S4: honeycomb positioning and spot welding;S5: honeycomb brazing;The application does not need to clamp positioning tool, and the clearance between honeycomb ring and support piece during assembly and brazing process is guaranteed by process combination, and the brazing rate of more than 95% of the conical honeycomb inner ring assembly can be obtained by once brazing;Excess honeycomb is used, and the honeycomb interference amount is evenly distributed on the support piece by the center alternating spot welding fixing mode, to form pressure stress on the support piece;Vacuum brazing is carried out by short-time holding and slow cooling process combination, and the synchronous shrinkage of honeycomb and support piece during cooling process is guaranteed by slow cooling process, to reduce the possibility that honeycomb is forced to separate from support piece;At the same time, the holding time is appropriately shortened, so that the time of brazing material above liquidus temperature is reduced, and the corrosion of brazing material to honeycomb is avoided.

The invention discloses an insulation assembly for a 10kV voltage transformer, which relates to the technical field of voltage transformers and comprises a voltage transformer and an insulation protection device. Four mounting blocks are fixedly connected to the surface of the voltage transformer, bolts are mounted in the four mounting blocks, three insulators are mounted at the top of the voltage transformer, and fourteen wiring terminals are mounted at the top of the voltage transformer; the insulation protection device comprises an insulation protection plate, two ejector rods, a pressing rod, two limiting clamping balls, two fixing clamping blocks and two springs, the insulation protection plate is slidably installed at the top of the voltage transformer, a containing groove is formed in the bottom of the insulation protection plate, and four wiring terminals on the rear side are hidden in the containing groove; the four wiring terminals for experiments on the rear side are hidden in the placement grooves, so that the wiring terminals are prevented from being exposed outside, the wiring terminals are prevented from being etched by atmospheric environment, rain, snow, wind, sand and the like, and the rusting phenomenon of the wiring terminals is prevented.

The invention relates to the technical field of magnesium phosphate cement materials, and particularly discloses a magnesium potassium phosphate cement-based material with high compactness and high salt corrosion resistance and application of the magnesium potassium phosphate cement-based material. The magnesium potassium phosphate cement-based material is prepared from the following components in parts by weight: 30 to 40 parts of dead burned magnesium oxide, 15 to 20 parts of monopotassium phosphate, 3 to 5 parts of retarder, 0.01 to 0.03 part of crystalline phosphate, 30 to 40 parts of fine aggregate and 8 to 13 parts of mixing water. Wherein the molecular formula of the crystalline phosphate is KNaMg2 (PO4) 2.14 H2O. By introducing the crystalline phosphate in a special structural form, the hydration evolution path and the microstructure of the magnesium potassium phosphate cement-based material in a salt erosion environment are effectively improved, and the salt erosion resistance is remarkably improved.

The utility model belongs to the technical field of insulating tube, specifically is a kind of environment-friendly insulating plastic insulating tube, including pipe body, rubber tube, spring and protection tube, the surface of pipe body is provided with splicing component, the splicing component is used to splice multiple pipe bodies, the surface of pipe body is fixedly installed with rubber tube, by the setting of rubber tube and spring, rubber tube can provide absolute insulation and protection to cable, and simultaneously its own material also has certain ductility, can extend according to the movement of cable, improve coverage area, spring can play buffering effect, to ensure that foreign matter cannot harm rubber tube.

The utility model provides a molten iron discharging trolley for a rock wool smelting furnace, which belongs to the technical field of rock wool processing and comprises a trolley body, a crucible is placed in the trolley body, a cold water circulating pipeline is arranged at the top of the trolley body, the side wall of the trolley body is of a double-layer hollow structure, and cooling water is introduced into the cold water circulating pipeline and the side wall of the trolley body. The temperature of a molten iron splashing part can be effectively reduced, and the molten iron is prevented from corroding the molten iron discharging trolley.

The utility model discloses a rainwater collecting device, which relates to the technical field of rainwater collection and is technically characterized by comprising a rainwater collecting box and two groups of rainwater collecting parts matched with the rainwater collecting box for use, and a water pumping pipe is mounted in the middle of the upper surface of the rainwater collecting box; two groups of rainwater impurity separation parts are symmetrically arranged on the two sides of the upper surface of the rainwater collection box; each group of rainwater and impurity separation component comprises a rainwater converging and collecting pipe which is installed at one corner of the upper surface of the rainwater collecting box in a penetrating mode, and a rainwater collecting hopper is arranged at one end of each rainwater converging and collecting pipe in a communicating and inserting mode. Impurities are prevented from entering the rainwater collecting box, corrosion of the impurities in the rainwater collecting box and deterioration of the collected rainwater are avoided, and meanwhile the situation that too many impurities cause blockage of a water pumping pipe and influence outward water supply of the collected rainwater can be avoided.

This invention discloses a multilayer synergistic composite membrane for alkaline water electrolysis to produce hydrogen, its preparation method, and its application, belonging to the field of water electrolysis hydrogen production technology. The membrane comprises, from bottom to top, a base support layer, an intermediate functional layer, and a surface hydrophilic layer; wherein the base support layer is a hydrophilically treated polyphenylene sulfide nonwoven fabric, the intermediate functional layer is a polysulfone / ZrO2-TiO2 heterostructure composite material, and the surface hydrophilic layer is a chitosan-polyethyleneimine dual-network hydrogel. This membrane features low surface resistivity, high gas barrier properties, excellent mechanical strength, and long-term stability, making it particularly suitable for alkaline water electrolysis to produce hydrogen under high current densities.

The cruise colored flag comprises a flag surface and a flagpole, a supporting rod is arranged at the top end of the flag surface, the supporting rod and the flagpole are connected through a connecting piece, a winding mechanism is arranged in the supporting rod and comprises a rotating shaft, and a storage groove is formed in the middle of the interior of the supporting rod. After the improved folk activity cruising colored flag is used, the rotating shaft can be driven by the driving part to rotate, so that the flag surface is rolled into the storage groove, the through hole is automatically closed, then the driving part is matched with the exhaust mechanism, and part of gas in the storage groove can be exhausted; therefore, the flag surface is stored in a relatively closed and vacuum-like environment, oxidation and decay of the flag surface can be greatly avoided, the service time of the flag surface is prolonged, waste of resources is avoided, the cruise colored flag can be split into two rod-shaped components through the connecting piece, and stacking of the cruise colored flag is facilitated.