17 results about "Phosphate treatment" patented technology

The present invention relates to a method for phosphating metal surfaces in a layer-forming manner using, as an activation step, an aqueous colloidal solution containing dispersed particulate components, which, in addition to a dispersed inorganic compound of a phosphate of a polyvalent metal cation, contain a polymeric organic compound as a dispersant at least partially composed of styrene and / or an α-olefin having 5 or fewer carbon atoms and at least partially composed of maleic acid, its anhydrides and / or its imides, and which polymeric organic compound further comprises polyoxyalkylene units. The washing and rinsing steps preceding the activation step, as well as the activation step itself, can be carried out using tap water, in a resource-saving manner, without loss of activation performance, using an aqueous colloidal solution containing at least 0.5 mmol / L of alkaline earth metal ions dissolved in water.

The invention relates to the field of steel piston phosphating treatment, in particular to a steel piston phosphating treatment method and system. According to the steel piston phosphating treatment method provided by the invention, through forced liquid drainage and synchronous purification, no liquid accumulation in a complex inner cavity is ensured, the defects of cross contamination and piebaldness are avoided, and the core pain point of steel piston phosphating is fundamentally solved; through the combined action of forced liquid drainage and synchronous purification, the thickness difference of phosphating films on the inner cavity and the outer surface of the piston subjected to phosphating treatment is smaller than 1 micron, corrosion resistance is uniform, and the product quality consistency is improved.

The present invention belongs to the technical field of surface treatment of metal materials, and particularly relates to an environmentally friendly aqueous treatment agent for improving the phosphatability of high-strength steel. The aqueous treatment agent is prepared by dissolving or dispersing a composition in an aqueous medium. The specific composition of the aqueous treatment agent is: A. A compound selected from compounds containing fluoride ions; B. A compound selected from metal ion compounds containing Cu, Zn, Mn, Ni, and Fe; C. A compound selected from organic acids; D. A compound selected from surfactants. The aqueous treatment agent may be diluted by adding 0 to 20 parts of water to 1 part of the treatment agent before use. The treatment agent can impart excellent phosphatability to the surface of high-strength steel sheets and is mainly applied to the surface modification treatment of high-strength steel.

One aspect of the present invention aims to provide a cold-rolled steel sheet and a method for manufacturing the same. A preferred aspect of the present invention aims to provide an ultra-high strength cold-rolled steel sheet with excellent shape and phosphate treatment properties, exhibiting a tensile strength of 1470 MPa or higher, and a method for manufacturing the same.

The present invention discloses a method for accelerated aging of grease, comprising the following steps: (1) applying oil to one side of a test plate, with the oiled edge 2-3 cm away from the edge of the test plate; sealing the unoiled side of the test plate with tape; (2) measuring the thickness of the oil film on the test plate after oiling; (3) placing the oiled test plate in a constant temperature and humidity test chamber for accelerated aging, wherein the temperature in the constant temperature and humidity test chamber is 45-55° C. and the relative humidity is 35%-45%; and (4) measuring the thickness of the oil film after accelerated aging for a period of time. The method provided by the present invention can effectively accelerate the aging speed of grease on the surface of the test plate. The oil film thickness measurement result after accelerated aging has good parallelism and accurate data, and is consistent with the phosphating micromorphology obtained after phosphating treatment of a test plate with the same oil film thickness obtained by normal placement. The test method is simple and efficient, and is of great significance to engineering and technical personnel in studying the influence of grease on phosphating quality.

The present invention relates to a process for the anti-corrosion pretreatment of a series of multiple components, each of which has at least a partial zinc and / or iron surface, at least a portion of which is initially activated in a targeted manner for subsequent zinc phosphate treatment. Targeted activation is achieved by controlled distribution of an aqueous dispersion to wet the zinc and / or iron surfaces, thus ensuring resource-saving activation. The aqueous dispersion for activation wetting contains particulate components dispersed in water, at least in part composed of hopeite, phosphophyllite, scholzite, and / or hallolite, provided as a dispersion of these crystalline solids stabilized by at least one polymeric organic compound. Again, the phosphate treatment quality of the acidic aqueous composition for zinc phosphate treatment is ensured and maintained by adding a certain amount of aqueous dispersion, particularly the same aqueous dispersion also used for activation wetting.

The application discloses a metal wire drawing process and relates to the technical field of metal wire processing. The metal wire drawing process comprises polishing, pickling, phosphating treatment and drawing treatment of the metal wire to be processed; a specific phosphating agent, ammonium polyphosphate, is used in the phosphating treatment process, a staged phosphating treatment process is used, and an activator is used to sequentially deposit a first phosphating layer with high compactness and a second phosphating layer with low compactness on the surface of the metal wire, so that the wear resistance of the surface of the metal wire is enhanced, and the adhesion of the lubricant film layer is facilitated; secondly, the metal wire passes through a lubricant with specific components in the drawing process, so that the corrosion resistance and the water-oxygen corrosion resistance of the metal wire are further enhanced, and obvious effects of preventing rust of the metal wire are achieved; in addition, the lubricant combines the wear-resistant agent with low hardness with the talc powder with soft texture, so that better lubrication is provided, and the drawing efficiency of the metal wire is improved.

A method of producing a phosphate-coated SmFeN-based anisotropic magnetic powder, the method including performing a phosphate treatment including adding an inorganic acid to a slurry containing a raw material SmFeN-based anisotropic magnetic powder, water, a phosphate compound, and a rare earth compound so that the slurry is adjusted to have a pH of at least 1 and not higher than 4.5 to obtain a phosphate-coated SmFeN-based anisotropic magnetic powder having a surface coated with a phosphate.

The present invention relates to an acidic aqueous composition which is free or substantially free of both fluoride anions and nickel cations and which comprises at least components a1) to a5) which are different from one another, namely phosphate anions as a1), nitrate anions as a2), zinc cations as a3), copper cations as a4), and magnesium cations as a5), a concentrate for producing said composition by dilution with water, a method for using said composition for at least partially phosphating an iron surface of a substrate, a method for phosphating at least one iron surface of at least one substrate, which method comprises at least step 1), i.e., contacting at least one iron surface at least partially with the aqueous acidic composition for phosphating at least one surface of the present invention, a substrate having at least one phosphate-treated surface obtainable by said phosphating method, and a method for cold-forming said substrate having at least one iron surface, which method comprises subjecting said substrate having at least one phosphate-treated surface to a cold-forming process.

The utility model discloses an adding device for electrolyte additive production, which relates to the technical field of electrolyte additive production and comprises a treatment tank and an automatic material adding device. The top of the treatment tank is fixedly connected with a conical feeding pipe; the automatic material adding device comprises an automatic adding pipe, three connecting rods, a conical material scattering disc, a threaded rod, a circular rotating disc, a cylindrical adjusting block and a material guiding inclined pipe, the automatic adding pipe is fixedly connected to the top of the treatment tank, the three connecting rods are all fixedly connected to the bottom of the automatic adding pipe, and the conical material scattering disc is fixedly connected to the lower ends of the three connecting rods; according to the lithium difluorotetrahalide phosphate treatment tank, a worker can slowly pour lithium difluorotetrahalide phosphate into the treatment tank, and the lithium difluorotetrahalide phosphate and dry methyl ethyl carbonate are slowly stirred and mixed, so that the lithium difluorotetrahalide phosphate is prevented from being accumulated in the treatment tank, and the mixing uniformity of the lithium difluorotetrahalide phosphate and the methyl ethyl carbonate is further improved.

The application discloses a preparation method of a cobalt-nickel MOF derived high-capacity phosphate positive electrode material and an aqueous zinc-based alkaline battery. The positive electrode material is prepared through a two-step hydrothermal process. In the first step, cobalt-nickel MOF is prepared. In the second step, the cobalt-nickel MOF is used as a precursor to perform hydrothermal phosphate treatment, so that the positive electrode material with high surface capacity is obtained and applied to the zinc-based alkaline battery. The electrode material preparation process is simple, the electrode material is applied to the positive electrode of the zinc-based alkaline battery, the electrode surface capacity is very high, and the electrode material has excellent application prospect.

The invention relates to a phosphating technology, in particular to an ultra-thin and ultra-fine grain size phosphating process for a bearing ring, which comprises the following steps: degreasing and cleaning; rinsing with hot water for the first time; rinsing with hot water for the second time; carrying out phosphating treatment; performing ultrasonic water rinsing; coating oil; and inspecting the parts. Wherein the acidity of the bearing ring phosphating solution is as follows: the total acidity is 45-70, the free acidity is 7-12, and the acid ratio is 5.5-7.0. In addition, in order to optimize the phosphating performance of the product, the phosphating temperature and time of the bearing ring are adjusted. According to the invention, the grain size of phosphating crystals can be refined, so that a phosphating film is more compact and complete, the adhesive capacity is higher, and the binding force and the corrosion resistance are stronger; the thickness of the phosphating film is reduced and is adjusted to 1-3 microns from original 6 microns; the influence of phosphorization on the surface roughness of the bearing ring raceway and the large flange is improved, and the surface contour characteristics of the bearing ring raceway are not influenced. The phosphating process provided by the invention is simple and scientific in process flow and convenient for automatic production, and the phosphating quality and the production efficiency are greatly improved.

The present invention discloses an emergency treatment method and system with nitrogen and phosphorus recovery. The method comprises the following steps: S1. The polluted water body passes through filtration and ozone treatment in sequence, which are respectively used to remove SS and COD in the water body; S2. The water body then passes through an ammonia nitrogen adsorbent and a phosphate adsorbent in sequence for purification, and under the ion exchange effect, NH4-N and phosphate in the water body are removed, and the treated water body is discharged; S3. A magnesium ion-containing solution is added to the regeneration liquid containing high-concentration NH4 + and PO4 3‑ formed after being treated by the ammonia nitrogen adsorbent and the phosphate adsorbent in step S2 to form magnesium ammonium phosphate precipitate, i.e., struvite, for nitrogen and phosphorus recovery. The beneficial technical effects of this solution are as follows: good pollutant removal effect, long adsorbent regeneration cycle. This method and system can effectively adsorb nitrogen and phosphorus in the water body, and can absorb and recycle the adsorbed nitrogen and phosphorus.

The invention provides a synergist for maintaining a steam-water system of a boiler and a preparation method of the synergist. The synergist comprises the following components: 2-6 parts of alkyl hydroxylamine, 8-35 parts of an alcohol amine composition, 3-18 parts of cyclic amine, 2-6 parts of inorganic alkali, 1-12 parts of an organic stabilizer, 0.5-8 parts of a modified silicate dispersant and 45-110 parts of water. The preparation method comprises the following steps: heating water, adding the inorganic base, sequentially adding the alkylhydroxylamine and alcohol amine composition, adding the cyclic amine and the organic stabilizer, adding the modified silicate dispersant, cooling to room temperature, and filtering to obtain the synergist for maintaining the boiler steam-water system. The comprehensive performance is far better than that of a traditional phosphate treating agent and a single-component alternative scheme, and the industrial pain point is solved.

A method of producing a phosphate-coated SmFeN-based anisotropic magnetic powder, the method including performing a phosphate treatment including adding an inorganic acid to a slurry containing a raw material SmFeN-based anisotropic magnetic powder, water, a phosphate compound, and a rare earth compound so that the slurry is adjusted to have a pH of at least 1 and not higher than 4.5 to obtain a phosphate-coated SmFeN-based anisotropic magnetic powder having a surface coated with a phosphate.

This invention provides an synergist for boiler steam-water system maintenance and its preparation method. The synergist comprises the following components: 2-6 parts alkyl hydroxylamine, 8-35 parts an alkanolamine composition, 3-18 parts cyclic amine, 2-6 parts inorganic base, 1-12 parts organic stabilizer, 0.5-8 parts modified silicate dispersant, and 45-110 parts water. The preparation method includes the following steps: heating water and adding an inorganic base, then sequentially adding the alkyl hydroxylamine and alkanolamine composition, then adding the cyclic amine and organic stabilizer, adding the modified silicate dispersant, cooling to room temperature, and filtering to obtain the synergist for boiler steam-water system maintenance. The comprehensive performance of this invention far surpasses traditional phosphate treatment agents and single-component alternatives, solving a pain point in the industry.

The application belongs to the technical field of paint and discloses polyester resin particles which can be used for environment-friendly powder paint without phosphating treatment, and the raw materials of the polyester resin particles are composed of the following components in parts by weight: dibasic acid 55-60 parts; dibasic alcohol 30-40 parts; acidolysis agent 2-10 parts; polyhydric alcohol 0.1-1 part; catalyst 0.01-0.5 part; heat stabilizer 0.1-1 part; antioxidant 0.1-1 part; modified phosphate ester 0.1-1 part. The polyester paint produced by the application does not need phosphating treatment on the coating surface when used, greatly reduces the pollution to the environment in the spraying process, simultaneously simplifies the process steps, shortens the process time, reduces the cost, and has a broad application prospect.