38results about How to "Fast phosphating" patented technology

The invention discloses phosphatizing liquid. The phosphatizing liquid comprises the following components in percentage by weight: 7 percent of starter liquid, 0.38 to 0.4 percent of neutralizer, 0.2 to 0.6 percent of accelerator and the balance of water, wherein the starter liquid comprises the following components in percentage by weight: 30 to 36 percent of 85 percent phosphoric acid, 16 to 20 percent of 68 percent nitric acid, 15.6 to 18.4 percent of 99.7 percent zinc oxide, 0.4 to 0.6 percent of citric acid, 0.4 percent of sodium fluoride, 0.6 to 1 percent of nickel nitrate, 0.16 to 0.24 percent of ferric nitrate, 0.004 to 0.01 percent of copper nitrate and the balance of water.

The invention discloses a normal temperature electrolytic phosphating technology. A phosphating solution comprises 10-63 g/L of zinc ions, 10-100 g/L of calcium ions, 50-120 g/L of phosphate radical,40-200 g/L of nitrate radical, 10-50 g/L of organic acid and 1-45 g/L of an additive, wherein the phosphate radical is P2O5, the phosphating temperature is the normal temperature, and current with thedensity being 3-100 A/dm<2> is applied through direct-current power supplies; the phosphating time is 3-120 s; and the weight of phosphated film is 8-20 g/m<2>, the drawing speed is 4-10 m/s, the phosphating temperature is the normal temperature, no phosphated residue is produced, electrodes do not need to be cleaned periodically, the phosphating solution contains no heavy metal, and environmentprotection standards are met.

The invention discloses a cleaning, derusting and phosphating agent. The cleaning, derusting and phosphating agent comprises the following formula components of raw materials in parts: 10-30 parts of phosphoric acid, 5-10 parts of metaphosphoric acid, 8-10 parts of hypochlorous acid, 5-10 parts of banana oil, 5-8 parts of dimethylbenzene, 5-12 parts of silicone oil, 5-10 parts of methyl ethyl ketone, 5-8 parts of isopropanol, 5-8 parts of diethyl ether, 3-5 parts of urea, 5-6 parts of m-dihydroxybenzene, 3-5 parts of p-hydroxyanisole, 5-8 parts of phenol, 5-8 parts of sodium polyacrylate, 2-3 parts of cocamidopropyl betaine, and 50-60 parts of de-ionized water. The cleaning, derusting and phosphating agent can be used at the normal temperature, has the advantages of quick phosphating speed, good phosphating effect, no corrosiveness, little waste residue discharge, combined completion of cleaning, derusting and phosphating at one step, easy production and low production cost, and can be applied to the degreasing, derusting and phosphating treatment of steel and cast iron products.

The invention discloses an anti-seismic prefabricated house, comprising a plurality of steel plates, wherein the outer side of each steel plate is treated by a phosphating solution to form a phosphating film, and the phosphating solution comprises the following components in parts by weight: 35-45 parts of phosphoric acid, 0.2-0.4 parts of copper nitrate, 20-25 parts of zinc oxide, and 10-15 partsof compound accelerant. The anti-seismic prefabricated house provided by the invention has the advantages: as the main film-forming materials, the phosphoric acid and zinc oxide can form a continuous and uniform phosphating film on the surface of the processed. Meanwhile, the addition of the compound accelerator further improves the film forming speed and film forming quality of the phosphatingfilm. In addition, because the electrode potential of copper is higher than that of iron, copper ions are reduced and deposited on the surface of a phosphated hinge body, so the cathode area on the surface is increased; the electrochemical reaction of phosphating is further promoted, the formation of phosphating crystal nucleus is accelerated, crystal grains are refined, and the phosphating film is compact and uniform; meanwhile, the phosphating speed is improved, the phosphating temperature is reduced, and finally the phosphating film has the advantages of compact film formation and strong adhesive force.

The invention discloses a normal temperature fast bonderite and producing method of metal plastic deformation, which is characterized by the following: the bonderite is composed of phosphoric acid, methyl ethyl ketone or acetone, eldopaque, manganese dihydrogen phosphate, calcium nitrate, zinc nitrate and water; the method comprises the following steps: mixing, emulsifying, restirring; the raw materials of bonderite is at a low price, which can be used at normal temperature. The method is easy to product, which reduces the costs of conversion.

The invention discloses a phosphatization technology for a hot rolling steel plate under normal temperature, a phosphatization liquid employed in the technology comprises the following components: 34-38g/L of manganese dihydrogen phosphate, 44-48g/L of zinc nitrate, 5-7g/L of 85% of phosphoric acid, 3-4g/L of dibismuth trimolybdenum dodecaoxide, 5-7g/L of sodium tungstate, 1-3g/L of sodium chlorate, 4-6g/L of ammonium citrate, 24-28g/L of sodium nitrate, 2-4g/L of cupric nitrate, 8-10g/L of tartrate, 3-5g/L of ethylene diamine tetraacetic acid, 2-4g/L of urotropine and the balance of water. The phosphatization technology comprises the following steps: performing alkali washing to remove oil stain, flushing by clear water for 2-3 times after being removed from a lye tank, then placing in a phosphatization groove filled with the phosphatization liquid composed of the above components, controlling pH value of the phosphatization liquid at 3.5-4.5 and the temperature of 10-30 DEG C, immersing for 8-12 minutes; flushing for 2-3 times by clear water after being removed from the phosphatization groove, and then drying in air or naturally dying.

The invention discloses a steel rim vehicle wheel surface phosphating treatment method and relates to the technical field of steel treatment. The method comprises: (1) grinding, (2) cleaning, (3) plasma treatment and (4) phosphating treatment. The method can well protect the steel rim vehicle wheel surface, improve the film forming stability, greatly improve the compactness and uniformity of the phosphated film, realize high phosphated film adhesion, improve the corrosion resistance and wear resistance of the surface of the steel rim vehicle wheel surface, realize high phosphated film purity,facilitate precipitate removal, shorten the conventional high-temperature surface phosphating treatment time, realize fast phosphating treatment at the normal temperature, prevent heating, solve the problem that the conventional high-temperature phosphating treatment method easily causes phosphated film impurities and precipitates difficult to remove, and improve the phosphating efficiency.

The invention relates to a door leaf manufacturing technique, relates to the technical field of furniture manufacturing technique, and solves the problems of complexity and poor quality in conventional door leaf manufacturing technique. The door leaf manufacturing technique provided by the invention comprises the following steps: step 1, plate shearing, shearing a plate to be a preset shape; step2, punching, after plate shearing, using a punching device for punching the plate; step: bending, using a bending machine for bending; step 4, pickling and phosphating, removing grease and corrosive materials, and carrying out surface adjustment; step 5, fastening, fastening a door leaf onto a door frame; the door leaf manufactured through the door leaf manufacturing technique provided by the invention has a simple structure, the door leaf manufacturing technique is simple in production process, repeated procedures are avoided, the production efficiency is improved, and the door leaf quality is improved.

The invention discloses a composition for steel phosphating and a preparation method thereof. The composition is composed of the following components in parts by mass: 2-6 parts of sodium nitrate, 2-4 parts of sodium citrate, 15-25 parts of iron manganese dihydrogen phosphate, 5-10 parts of magnesium oxide, 10-20 parts of nickel nitrate, 2-5 parts of copper sulfate, 1-3 parts of sulfosalicylic acid, 2-5 parts of polyethyleneglycol and 500-900 parts of deionized water. The preparation method comprises the following steps: a. weighing the components according to parts by mass; b. adding the sodium citrate, sulfosalicylic acid and polyethyleneglycol into another deionized water; and c. uniformly mixing the solutions obtained in the step a and step b. The composition for steel phosphating can complete phosphating within 8-10 minutes, and has the advantages of high phosphating speed and short required lime for phosphating; and the surface of the phosphated steel has bright color.

The invention discloses a car trunk hinge part. The outer surface of the hinge part is treated with a phosphating solution to form a phosphating film, wherein the phosphating solution comprises the following components in parts by weight: 30-40 parts of phosphoric acid, 0.1-0.5 part of copper nitrate, 15-20 parts of zinc oxide, 1-3 parts of manganese salt, 2-4 parts of nickel nitrate, and 7-10 parts of a compound accelerant. The car trunk hinge part has the advantages that: phosphoric acid and zinc oxide are taken as main film-forming substances, so that a continuous and uniform phosphating film is formed on a treated metal surface. Meanwhile, the compound accelerant further can be added to increase film-forming speed of the phosphating film and improve film-forming quality of the phosphating film. Besides, electrode potential of copper is positive than that of iron, and copper ions are reduced for being deposited on the surface of a phosphated hinge body, so that a cathode region of the surface is increased, electrochemical reaction of phosphating is further promoted, formation of a phosphating crystal nucleus is accelerated, and crystalline grains are refined, and therefore, thephosphating film is compact and uniform, phosphating speed is reduced, and the phosphating film has the advantages of being tight in film-forming and strong in adhesive force.

The invention discloses a normal-temperature phosphating fluid for drawing steel. The liquid is prepared by nitrate, nitrite, nitroguanidine, molybdate, phosphate, an accelerant and deionized water. The liquid can be used for performing normal-temperature phosphating on the steel for drawing, and can reach a same effect under a relatively-high-temperature phosphating; under the normal temperature, after 3 to 5 minutes, a layer of black, even and compact phosphating film can be formed on the surface of the steel, and the corrosion resistance is tested to be above the national standard. The problems of large high-temperature phosphating liquid consumption, high possibility in stripping, long phosphating time and the like are solved.

The invention discloses phosphorizing liquid for pretreating a high-carbon steel wire before drawing and a preparation method of the phosphorizing liquid.The phosphorizing liquid is prepared from phosphoric acid, zinc nitrate, zinc oxide, a compound as shown in formula I, and water; zinc oxide is added to little water and mixed into paste; then phosphoric acid is added and agitated; zinc nitrate and the compound as shown in formula I are added after phosphoric acid is dissolved; water is added until reaching the use height; then the heating ad agitating are performed, and the volume is fixed; the temperature in phosphorizing liquid preparation is controlled to be 65 to 75 DEG C; the prepared phosphorizing film is thick, uniform, dense, high in corrosion resistance, fast to form, and wide in applicable scope of the steel wire according to the specification.

The invention discloses a four-in-one phosphating solution and a preparation method thereof. The four-in-one phosphating solution is composed of the following components including, by concentration, 10-30g/L of 85% phosphoric acid, 30-40 g/L of sodium dihydrogen phosphate, 0.5-1g/L of sodium tripolyphosphate, 0.1-0.3 g/L of a rust inhibitor, 0.33-0.46 g/L of a stabilizer, 0.8-1.2 g/L of ammonium molybdate, 1-2g/ L of a pH conditioning agent and 1L of water. The four-in-one phosphating solution provided by the invention can be used for achieving four functions including deoiling, derusting, phosphorization and passivation in a tank under the room temperature, uniform, compact and corrosion-resistant color phosphating film is formed on the surface of a steel workpiece and can serve as a bottom layer before coating of paint spraying, powder coating and the like, and the coating adhesion is good.

The invention discloses an external thread ferrule connector. The ferrule connector is characterized in that a phosphating film is formed on the outer surface of each part of the ferrule connector through phosphating solution treatment, wherein a phosphating solution comprises, by weight, 210-240 parts of phosphoric acid, 30-40 parts of zinc salt, 15-20 parts of manganese salt, 20-25 parts of a dispersant and 20-25 parts of an accelerant. After the ferrule connector is put into the phosphating solution, the anodic oxidation process of Fe occurs on the surface of the ferrule connector, and substances such as Fe (H2PO4) 2, Zn (H2PO4)2, Zn3 (PO4) 2.4H2O and Zn2Fe (PO4) 2.4H2O are generated; when phosphating reaction is carried out until the concentration of each substance correspondingly reaches respective solubility product, insoluble phosphates form crystal nucleuses on active points on the surface of the ferrule connector, and the crystal nucleuses are taken as the center to continuously extend and grow towards the periphery of the surface to form crystals until the continuous and uniform phosphating film is formed on a treated metal surface; and meanwhile, the manganese salt can accelerate the anodic oxidation process of Fe on the surface of the ferrule connector as well as the film forming speed of the phosphating film on the metal surface, so that the continuous, uniform andcompact phosphating film is formed on the surface of the ferrule connector, and a continuous protection effect is achieved.