48results about How to "Corrosion effective" patented technology

The invention discloses an environment-friendly stainless steel substrate plating stripping agent. Nitrate is optimally selected as an oxidizing agent for stripping nickel, chromium, copper, tin, and other plating on a stainless steel substrate, and as generally, nitrate is relatively stable in property and relatively low in toxicity, so that when the stripping agent provided by the invention is used, exhaust gases and waste water are not generated, and the stripping agent is non-corrosive to a device and highly friendly to the environment; at the same time nitrate is matched with citrate, potassium sodium tartrate and a proper amount of polyhydroxyl aldehyde, so that the speed for stripping the nickel plating on the stainless steel substrate is effectively increased, the plating stripping is achieved in a short time, and the production cycle is shortened while the substrate is not damaged; and the stripping rate of the nickel plating on the stainless steel substrate can be effectively increased through the combination of mannitol and sodium diacetate. Relative to the prior art, the stripping agent has the advantages of being free of corrosion, poisonous gases and pollution, high in efficiency, environment-friendly in use, easy and convenient to maintain, and the like.

The invention discloses an iron substrate plating neutral stripping agent. Nitrate is optimally selected as an oxidizing agent for stripping nickel, chromium, copper, tin and other plating on an iron substrate, and as generally, nitrate is relatively stable in property and relatively low in toxicity, so that when the stripping agent provided by the invention is used, exhaust gases and waste water are not generated, and the stripping agent is non-corrosive to a device and highly friendly to the environment; at the same time nitrate is matched with citrate, potassium sodium tartrate and a proper amount of polyhydroxyl aldehyde, so that the speed for stripping the nickel plating on the iron substrate is effectively increased, the plating stripping is achieved in a short time, and the production cycle is shortened while the substrate is not damaged; and particularly, calcium nitrate is optimally as the oxidizing agent, and ammonium ferric citrate is adopted as a first complexing agent, and calcium nitrate and ammonium ferric citrate are combined with mannitol and sodium diacetate, so that the stripping rate of the nickel plating on the iron substrate can be effectively increased. Relative to the prior art, the stripping agent has the advantages of being free of corrosion, poisonous gases and pollution, high in efficiency, environment-friendly in use, easy and convenient to maintain, and the like.

The invention provides a preparation method of a high bonding force coating taking anodic alumina as the base material. A shielding layer at the bottom of an anode oxide film is removed to expose thealuminum metal base material, and then, electroplating monometallic treatment is carried out, and finally, combination of the anodic oxidation base material and the coating is effectively improved.

The invention provides a nickel-based powder high-temperature alloy corrosion solution and a corrosion method. The corrosion solution takes hydrochloric acid as a solvent, and solute components and concentrations are as follows: 60-80g/L sulfuric acid, 150-180 g/L of copper sulfate, and 80-100 ml/L of absolute ethyl alcohol, wherein the mass fraction of the adopted hydrochloric acid is 36%-38%, and the mass fraction of the sulfuric acid is 95%-98%. The corrosion method comprises the processes of incoming part inspection, oil removal, hot water cleaning, cold water washing, corrosion, flowing cold water washing, light transmission, flowing cold water washing, hot water washing, blow-drying, inspection and hydrogen removal. According to the corrosion solution and the corrosion method, the alloy surface appearance can be clearly displayed, various defects of the alloy surface can be analyzed and judged more conveniently, and meanwhile the problems that a corrosion layer is too deep and acorrosion product is difficult to remove are effectively solved.

The invention discloses a U-shaped fixed carriage type mine car and relates to the field of mine car equipment. The mine car comprises a carriage, car frames, open type wheel sets, an anti-falling plug pin, a three-ring chain and handles. The carriage body is composed of an anti-collision layer, a buffer layer, an adhesion layer and an anti-corrosion layer. The anti-collision layer is the outermost layer of the carriage; the buffer layer is glued and adhered to the inner wall of the anti-collision layer; the adhesion layer adheres to the buffer layer and the anti-corrosion layer; the car frames are fixed at the bottom of the carriage through a plurality of bolts; and the number of the car frames is two, the open wheel sets are fixed to the two sides of the car frames through bolts, the number of the open wheel sets is four, the anti-falling plug pin is installed on a connecting base connected with the carriage, the three-ring chain is placed on the connecting base and connected to theanti-falling plug pin in a sleeving mode, and the four handles are fixed to a front side and a rear side of the carriage through screws. By adopting a multi-layer carriage wall structure, a stainlesssteel inner wall can effectively prevent a carriage inner wall from being corroded and is convenient to clean, the adhesion layer and the buffer layer can reduce impact on the stainless steel inner wall and prolong a service life of the stainless steel inner wall, and a cast iron protective layer can protect the inner wall from being impacted by an external force and improve durability of the minecar.

The invention discloses environment-friendly multi-effect type cooling liquid for testing an engine. The environment-friendly multi-effect type cooling liquid comprises the following components in percentage by mass: 8-10% of a ferrous metal antirusting agent, 2-3% of a non-ferrous metal antirusting agent, 15-20% of organic amine, 3-5% of a vapor-phased corrosion inhibitor, 5-8% of all-purpose cellosolve, 0.1-0.2% of a defoaming agent and the balance of deionized water, wherein the total percentage is 100%. The environment-friendly multi-effect type cooling liquid disclosed by the invention has the beneficial effects that the anti-rusting property and the vapor-phased anti-rusting property are excellent, no corrosion to metals under high temperature is achieved, the anti-rusting property is stable, the cleaning property is excellent, oil-stain impurities in a water jacket of the engine can be effectively cleaned, condensation of steam is prevented from rusting an inner cavity, the engine can be protected from being corroded, the anti-rusting period is long (up to more than 90 days), residual liquid and other engine antifreezing liquids have excellent compatibility, and after addition of a proper amount of the antifreezing agent, the cooling liquid can be used as the engine antifreezing liquid and is safe and environment-friendly.

The invention provides a CO oxidation catalyst and a preparation method thereof. The catalyst carrier is a through-hole type aluminum oxide pore channel array obtained by calibrating a corrosion anodeoxide film and a replacement reaction, no shielding layer exists in the aluminum oxide pore channel array, the pore channel structure of the array is complete and uniform, and a Pt active component is impregnated on the surface of the aluminum oxide pore channel array to obtain the Pt/Al2O3 catalyst.

The invention provides a preparation method of a through hole type alumina catalyst carrier. The preparation method comprises the following steps: performing a selective adsorption reaction on a porous layer and a shielding layer by gamma-chloropropyltrimethylsilane, performing subsequent an alkaline corrosion reaction, effectively removing the shielding layer at the bottom of a pore channel, andperforming a chemical replacement reaction to remove an aluminum base material, thereby obtaining the through-hole type aluminum oxide catalyst carrier.

The embodiment of the invention discloses a tin-nickel solder IMC (Intermetallic compound) layer metallographic corrosive agent and a metallographic structure display method thereof. The metallographic corrosive agent is prepared by 36-38% of hydrochloric acid and more than 95% of ethyl alcohol in mass percent according to a volume ratio of 1:9. The metallographic structure display method comprises the following steps of: performing mechanical grinding of a test sample; performing mechanical polishing of the grinded test sample; employing the metallographic corrosive agent to perform metallographic corrosion of the polished test sample; washing the test sample after metallographic corrosion; drying the cleaned test sample; and employing a micro device to display an IMC metallographic microscopic structure interface of the dried test sample and clearly display the morphology of the tin-nickel solder IMC layer.

The invention discloses a road and bridge crack repairing method, and belongs to the field of road bridges, the road bridge crack repairing method specifically comprises the following steps: S1, flexible rails are symmetrically installed on two sides of a crack; s2, a dust suction device is used for adsorbing sundries in the crack, and then a high-pressure flushing device is used for flushing the crack on the base plane of the bridge; s3, a corrosion agent is injected into the dried crack, and secondary flushing is carried out; s4, a counterbore is drilled, and a mounting groove is formed; s5, connecting pieces are mounted in the mounting groove, and connecting bolts are mounted in the counterbore; s6, a crack repairing material is injected into the crack and dried; and S7, the flexible rails are dismantled, the foundation trench is ground out, a surface protection layer is filled, and after tamping, the surface protection layer is ground to be flush with the bridge base plane. The method is easy to operate, rapid in crack repairing and firm in connection, effectively avoids the possibility of secondary cracking of the crack, has market prospects and is suitable for popularization.

The invention provides a method for removing a shielding layer in an anodized aluminum pore channel. Through selective adsorption reaction of gamma-chloropropyl trimethylsilane with a porous layer andthe shielding layer and subsequent alkaline corrosion reaction which can effectively corrode the shielding layer located at the bottom of the anodized film pore channel, the electrical conductivity of an anodized substrate is effectively improved.

The invention discloses a novel multilayer composite anti-corrosion material for a bolt, and relates to the technical field of bolt corrosion resistance. The material is multilayer composite anti-corrosion coating liquid for the bolt, and a formula of the material is prepared from the following components in parts by mass: 100 to 150 parts of silicone resin, 1 to 2 parts of an anti-settling agent,12 to 30 parts of zinc phosphate, 50 to 100 parts of ethylene propylene emulsion, 16 to 23 parts of mica iron oxide, 3 to 5 parts of an adhesion promoter and 5 to 6 parts of an anti-skinning agent. According to the novel multilayer composite anti-corrosion material for the bolt, by cooperative use of the silicone resin, the zinc phosphate, the ethylene propylene emulsion, the mica iron oxide, dimethylaminoethyl methacrylate, hydroxyethyl methacrylate, butyl acrylate, phenolic resin and the ethylene propylene emulsion, the whole prepared anti-corrosion coating forms a layer of protective filmwhich effectively protects spirals and avoids severe economical loss of an enterprise due to halt of working equipment caused by corrosion of the bolt.

The invention provides a preparation method of an alloy electroplating material with high bonding force. A shielding layer at the bottom of an anodic oxide film is removed, an aluminum metal base material is exposed, then a zinc transition layer and a zinc-nickel electroplating layer are sequentially electroplated, and finally the bonding force of the base material and the plating layers is effectively improved.