The invention discloses a multifunctional metal surface treatment solution which comprises the following components in percentage by mass: 30-60 percent of phosphoric acid, 5-10 percent of accelerator, 15-20 percent of derusting transforming agent, 3-5 percent of corrosion inhibitor, 1-2 percent of degreaser, 0.5-3 percent of passivator and 5-30 percent of water, wherein the accelerator is tartaric acid or/or citric acid, the derusting transforming agent is zinc phosphate or/and zinc nitrate or/and zinc oxide; the corrosion inhibitor is aluminium hydroxide or/and sodium nitrite, the degreaser is sodium alkylbenzenesulfonate or/and sodium fluoride; and the passivator is bichromate or/and ammonium molybdate or/and magnesium chloride. The multifunctional metal surface treatment solution has the advantages of scientific and reasonable formula, capability of removing rust, preventing rust and removing grease by being directly sprayed on the surface of metal, and also capability of replacing an anti-corrosive primer.

Multifunctional metal surface treatment solution

The invention relates to the technical field of passivation agents and in particular relates to a copper chromate-free passivation agent and an application method thereof. The copper chromate-free passivation agent comprises the following raw materials based on each liter of water: 0-15g of benzotriazole, 0-180g of organic phosphonic acid, 0-30g of organic carboxylic acid, 5-20g of an imidazoline inhibitor, 0-20g of phytic acid, 0-15g of absolute ethanol, 0-15g of cetyl trimethyl ammonium bromide and 1L of water, wherein the mass ratio of the benzotriazole to the absolute ethanol is 1 to 1; the organic phosphonic acid is glycine dimethyl phosphonate, hydroxy hexyl diphosphonic acid, 2-phosphate-1,2,4-tricarboxylic acid butane or hydroxy ethylidene diphosphonic acid; organic hydroxy acid is tartaric acid, citric acid or salicylic acid; the imidazoline inhibitor is oleate imidazoline, rosinyl imidazoline or thiourea imidazoline. The copper chromate-free passivation agent has the advantages of non-toxicity, no chromate, environmental friendliness and excellent salt fog resistance.

Copper chromate-free passivation agent and application method thereof

Low-temperature single-component zinc series phosphating solution and preparation method thereof

The invention relates to environment-friendly derusting conditioning fluid for metal equipment of a flue-curing barn. By the environment-friendly derusting conditioning fluid, the technical problem of poor derusting effect or high cost and the like in the conventional deruster is solved. According to the key point of the technical scheme, the environment-friendly derusting conditioning fluid is prepared by mixing and stirring the following raw materials in part by weight: 50 to 70 parts of deionized water, 20 to 30 parts of orthophosphoric acid, 1 to 3 parts of zinc hydroxide, 2 to 4 parts of manganous dihydrogen phosphate, 0.5 to 1.5 parts of sodium tripolyphosphate, 1 to 3 parts of sulfosalicylic acid, 1 to 3 parts of sodium nitrite, 2 to 4 parts of boric acid, 0.5 to 1.5 parts of sodium molybdate and 0.5 to 1.5 parts of polyvinyl alcohol. By the environment-friendly derusting conditioning fluid, rust melting and rust proofing are completed at one time, so that the labor production efficiency is improved greatly, and the cost of conditioning rust is reduced. The environment-friendly derusting conditioning fluid can be widely applied to a surface treatment process for steel devices.

Environment-friendly derusting conditioning fluid for metal equipment of flue-curing barn

The invention relates to a steel surface treating agent, particularly a washing-free normal-temperature phosphating solution after steel workpiece phosphating, which is prepared by mixing the following raw materials in percentage by mass: 12-25% of 85% phosphoric acid, 2-6% of zinc oxide, 1-2% of sodium molybdate dihydrate, 0.5-5.0% of lanthanum nitrate hexahydrate, 0-6% of manganous nitrate tetrahydrate, 0.1-0.8% of tartaric acid, 0.1-0.2% of alkylphenol ether sulfosuccinate sodium salt, 0.1-0.2% of sodium benzoate, 0.1-0.3% of 70% phytic acid, 0-0.5% of 30% oxydol and the balance of water. The preparation method comprises the following steps: adding zinc oxide into 2 times by mass of water, stirring into paste, adding 85% phosphoric acid, and stirring to a uniform transparent state; while stirring, sequentially adding phytic acid and tartaric acid which is dissolved in water, lanthanum nitrate hexahydrate and manganous nitrate tetrahydrate which are respectively dissolved in water, sodium molybdate dihydrate which is dissolved in water, the other raw materials except sodium benzoate, and sodium benzoate dissolved in hot water; regulating the pH value of the solution to 2.0; and adding water to the required amount.

Washing-free normal-temperature phosphating solution after steel workpiece phosphating and preparation method thereof

The invention relates to a site rust-removing and corrosion-preventing method for continuously carrying out the electric processing of a steel piece of an electric power system, which has good rust removing and corrosion preventing effect and comprises the steps of: a removing the dust and the rust on the corrosion part of the steel piece on site; b coating the rust corrosion part at least for once by utilizing the surface treating fluid integrating four functions of removing oil, removing rust, phosphatizing and passivizing after the step a; and c coating for at least once by utilizing corrosion-preventing paint after the coated surface treating fluid is completely dried, wherein the surface treating fluid is a water solution prepared according to the following components and the contents thereof; and each liter of the surface treating fluid contains 50 to 350ml of phosphoric acid (while the condensation is 85%), 5 to 25g of Zinc, 02 to 75g of phosphatizing reaction accelerant, 05 to 10g of oxidant, 10 to 40g of polyhydroxyl organic acid complexing agent, 1 to 5g of surfactant and the balance of water The method is suitable for the rust removing and the corrosion preventing of outdoor electric power equipment

Site rust-removing and corrosion-preventing method for steel piece of electric power system

The utility model discloses a ground wire clamp specially used for a metering box. The ground wire clamp includes a rotating shaft, a pair of metal movable chucks which are hinged to each other via the rotating shaft. The end of the metal movable chuck is sleeved with an insulated handle; the rotating shaft is sleeved with a torsion spring; and the middle of the metal movable chuck is provided with a mounting hole. Because the ground wire clamp of the utility model adopts the above technical scheme, the ground wire can be conveniently fixed on a bus bar of the metering box via the clamp, thus making the time spent on hanging the ground wire on the metering box greatly reduced. Besides, the operation is simple, convenient, and safe, and the grounding reliability of the metering box is improved.

Shengli Liu

Papers

Site rust-removing and corrosion-preventing method for steel piece of electric power system

Ground wire clamp specially used for metering box