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17results about "Phosphatisation" patented technology
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Phosphating solution based on electric triggering and bionic template cooperative regulation and control as well as use method and application of phosphating solution
The invention discloses a phosphating solution based on electric triggering and bionic template cooperative regulation and control as well as a use method and application thereof, and belongs to the technical field of phosphating solutions. The phosphating solution comprises the following components: 5-60 g / L of a phosphating precursor; 0.1 g / L to 10.0 g / L of a bionic template agent; 0.5 g / L to 20 g / L of a nanometer reinforcing phase; 7-65 g / L of a metal ion source; 0.1-3.0 g / L of an oxidizing agent; the pH regulator is used for regulating the pH value to 3.5 to 6.0; and the balance of deionized water. The phosphating precursor is one or more of phytic acid, amino trimethylene phosphonic acid and 1-hydroxyethylidene-1, 1-diphosphonic acid; when the phosphating solution is used, a workpiece is used as a cathode to apply an electric field. The phosphating solution is used for metal protection or metal drawing. A phosphating film formed by the phosphating solution based on electric triggering and bionic template cooperative regulation under the action of an electric field has excellent corrosion resistance, adhesive force and wear resistance, and sediment in the phosphating process is few.
Owner:YINGXING NEW MATERIALS (GUANGDONG) CO LTD
treating with a preformed reaction product of a catechol compound and a functionalized co-reactant compound
The corrosion resistance of converted coated metal substrate surfaces can be further improved by treating the surfaces with an aqueous mixture of a preformed reaction product obtained by reacting a catechol compound (e.g., dopamine or a salt of dopamine) with a functionalized co-reacting compound (e.g., polyethyleneimine).
Owner:HENKEL KGAA
Grain-oriented electrical steel sheet and method for forming insulating coating
The grain-oriented electrical steel sheet includes: a base steel sheet; and an insulating coating formed on a surface of the base steel sheet, in which the insulating coating includes: an intermediate layer that is formed on a side of the base steel sheet and contains a crystalline metal phosphate; and a tension coating layer formed on a surface side of the insulating coating, and the crystalline metal phosphate is plate-shaped, and has an average grain size of 0.5 to 3.0 µm.
Owner:NIPPON STEEL CORPORATION
Industrial electrolytic phosphating tank
The utility model discloses an industrial electrolytic phosphating tank which comprises a phosphating tank body and a phosphating roller arranged in the phosphating tank body, two ends of the phosphating roller are respectively provided with a roller shaft, each roller shaft is provided with a first gear which performs follow-up motion, a second gear which is meshed with the first gear is arranged below the first gear, and the second gear is meshed with the second gear. The second gear is rotationally connected to the phosphating tank body, a lower chain wheel which rotates synchronously is coaxially arranged on the second gear, an upper chain wheel which is rotationally connected to the phosphating tank body is arranged above the lower chain wheel, a chain is in transmission connection between the upper chain wheel and the lower chain wheel, and a power assembly which controls rotation is in transmission connection to the upper chain wheel. A partition plate is arranged between the phosphorization roller and the first gear, a limiting groove with the upper end connected with the outside and extending up and down is formed in the partition plate, and the roller shaft slides into the limiting groove from top to bottom. The electrolytic phosphating tank has the advantages of being balanced in concentration, sufficient in reaction and high in phosphating layer quality, and is complete in overall function and high in practicability.
Owner:ZHESHANG ZHONGTUO GRP (ZHEJIANG) NEW MATERIAL TECH CO LTD
Secondary heating circuit for coil heating
This utility model belongs to the technical field of phosphating heating tubes, and relates to a two-stage heating pipeline for coil heating, including a heat pump. The first interface of the heat pump is connected to the main outlet water pipe, which is connected to a transition guide pipe. The second interface of the heat pump is connected to the main return water pipe. The main outlet water pipe is connected to several branch outlet water pipes, each of which is connected to the inlet of a medium-temperature tank. The outlet of each medium-temperature tank is connected to the transition guide pipe via a first return water branch pipe. The transition guide pipe is also connected to the inlet of a low-temperature tank via a transition guide branch pipe, and the outlet of the low-temperature tank is connected to the main return water pipe. This utility model can improve the utilization rate of wastewater hot water, meet market demands, and has a compact overall design, reducing operating costs.
Owner:WUXI HUANENG SURFACE TREATMENT
High-depth-ratio microcavity-gas film coupling type underwater drag reduction material and preparation method and application of high-depth-ratio microcavity-gas film coupling type underwater drag reduction material
The invention provides a high-depth-ratio microcavity-gas film coupling type underwater drag reduction material as well as a preparation method and application of the high-depth-ratio microcavity-gas film coupling type underwater drag reduction material. The porous anodic aluminum oxide template has a depth-to-width ratio of (25-100): 1, a shape factor greater than or equal to 0.95 and less than or equal to 1.05, and a pore spacing standard deviation greater than or equal to 0 and less than or equal to 0.05. The porous anodic aluminum oxide template disclosed by the invention can be used as an underwater anti-drag material.
Owner:TSINGHUA UNIVERSITY
Biodegradable implant comprising coated metal alloy product
The invention relates to a biodegradable implant comprising a surface coated magnesium alloy or zinc alloy product, whereby the coating layer comprises oxides and / or phosphates of from rare-earth elements, Mg, Ca, Zn, Zr, Cu, Fe, Sr, Li, Mn or Ag wherein the coating is preferably generated by plasma electrolytically oxidation (PEO). The invention further comprises a method for preparing the coated magnesium or zinc alloy product of the implant.
Owner:KARL LEIBINGER ASSET MANAGEMENT GMBH & CO KG
Pipeline structure of phosphating filter
ActiveCN224212818Uincrease usageMeet one-to-two filtering needsCellsPhosphatisationMechanical engineeringSewage discharge
The utility model belongs to the technical field of phosphating filter equipment, and relates to a pipeline structure of a phosphating filter, which comprises at least two phosphating tanks arranged in parallel, each phosphating tank is respectively connected with a blanking pipe, the lower ends of the blanking pipes are gathered to a blanking main pipe, and the blanking main pipe is connected to an inlet of the phosphating filter; an outlet of the phosphating filter is connected with a filter outlet main pipe, the filter outlet main pipe is connected with the middle of a pipe body of a filter outlet branch pipe, the two ends of the filter outlet branch pipe are respectively connected with the middle of a pipe body of a conveying pipe, and the conveying pipe is divided into a phosphating tank branch pipe and a sewage discharging branch pipe by the filter outlet branch pipe. The upper end of the phosphating tank branch pipe extends into the phosphating tank, and the lower end of the pollution discharge branch pipe is connected to the pollution discharge header pipe. The utilization rate of the phosphating filter can be improved; the one-driving-two filtering requirement of the phosphating filter is met; the whole equipment is compact, and manufacturing and using cost is reduced.
Owner:WUXI HUANENG SURFACE TREATMENT
anti-oxidation protection for C / C composite substrate
This description relates to a process for manufacturing an anti-oxidation protection for a C / C composite substrate, as well as a mechanical part equipped with such protection. The process comprises the following steps: supplying a substrate to be protected (21), the substrate being made of C / C composite material; supplying a liquid suspension (15) comprising at least one active principle from the phosphate family; supplying a direct current electric generator (12); placing the substrate (21) in the suspension (15), as the first electrode (13), and connecting the substrate (21) to a first terminal of the electric generator (12); placing a second electrode (14) in the suspension (15), opposite the substrate (21), and connecting the substrate (21) to a second terminal of the electric generator (12); and applying a voltage (U) of at least 10 V between the two electrodes (13, 14) for at least 1 minute. Fig. 2.
Owner:SAFRAN CERAMICS SA +3
Insulation checking method
To provide an insulation confirming method for detecting the presence or absence of an insulation defect due to the existence of innumerable conductive parts in an insulation film on a base material by a simple method.SOLUTION: In the insulation confirmation method, a conductive fluid is applied between an electric resistance layer 50 whose surface of a metal base material 10 is subjected to chemical conversion treatment and which forms a conductive layer 60 and a planar contactor 70, and a measuring device having a first electrode 72 for applying a negative or positive DC voltage to the planar contactor 70 and a second electrode for applying a negative or positive DC voltage to a part other than the electric resistance layer 50 of the metal base material 10 is used. The electric resistance value of the range of the contact surface where the planar contactor 74 is brought into contact with the electric resistance layer 50 is measured, and the presence or absence of the generation of a conductive part due to the existence of a fine conductive part in the range of the contact surface is determined from the electric resistance value to confirm the level of insulation of the electric resistance layer.SELECTED DRAWING: Figure 11
Owner:NEXT INNOVATION
Electrolytic coloring composite treatment method for stainless steel instrument and stainless steel oral medical instrument prepared by adopting method
The invention relates to a stainless steel instrument electrolytic coloring composite treatment method and a stainless steel oral medical instrument prepared by the method, the treatment method comprises the following steps: (1) roughening pretreatment to obtain a clean and rough surface; (2) PVD film plating treatment: plasma cleaning is performed on the pretreated stainless steel instrument, and a PVD tantalum coating is locally deposited on the stainless steel instrument in a magnetron sputtering or arc ion plating mode; (3) one-step electrolytic coloring compound treatment is carried out, and anodic oxidation coloring of the tantalum coating area and electrochemical polishing of the exposed stainless steel area are synchronously achieved; and (4) post-treatment is conducted, specifically, the electrolyzed stainless steel instrument is neutralized, cleaned and dried. Through the innovative one-step electrolytic coloring composite treatment technology, the long-term safety and applicability of the instrument are remarkably improved, the traditional contradiction between the coating binding force and the surface smoothness and antibacterial property is ingeniously solved, and industrial application prospects are achieved.
Owner:DABO MEDICAL TECH CO LTD +1
A phosphating device for use prior to electrophoresis of an automobile component
This utility model relates to the field of electrophoresis technology and discloses a phosphating device for automotive parts before electrophoresis, comprising: a base frame; a pool body fixedly connected to the top of the base frame; a filter section disposed on the top of the pool body; and a cleaning section disposed inside the pool body. As the filter plate rises, a drive motor, driven by a connecting column, rotates the scraper, keeping it vertical. Due to the inclination of the triangular connecting frame and the filter plate, impurities slide, driving an electric valve to rotate and open the outlet, allowing some impurities to be transported along a trajectory to the inside of the collection box. Then, a cam is rotated; due to the strong blocking effect of the rotating column and one side of the pool body, the rotation angle of the rotating column is stabilized. Subsequently, a brake lever is pulled, causing the transmission plate to slide along the inclined trajectory, thereby driving the scraper to scrape and clean the impurities on the top of the filter plate.
Owner:SMART MACHINERY EQUIPMENT (DALIAN) CO LTD
Electrochemical treatment device and system and carbon fiber surface treatment method
The invention relates to the technical field of fiber surface treatment, in particular to an electrochemical treatment device and system and a carbon fiber surface treatment method. The device comprises an electrolysis unit, wherein the electrolysis unit comprises a cathode tank provided with a cathode plate, an anode tank provided with an anode plate, a liquid storage tank and a power supply; the cathode tank and the anode tank are respectively and independently provided with an overflow port to form an overflow area; the liquid storage tank is used for recovering the electrolyte overflowing from the cathode tank and the anode tank and providing the electrolyte for the cathode tank and the anode tank; and along the length direction of the cathode tank, the distance between the cathode plate in the cathode tank and the bottom surface of an overflow area formed by overflow of the cathode tank is gradually reduced or increased. The processing quality of the carbon fibers can be further improved, broken filaments are reduced, the whole processing process is more uniform, and the retention rate of mechanical properties of the fibers is high.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1
Surface treatment method for large-piece-weight coiled titanium alloy wire
The invention discloses a surface treatment method for a large-piece-weight coiled titanium alloy wire, and belongs to the field of titanium alloy treatment. Surface treatment is achieved through continuous processes of rolling and drawing, scaling treatment, online hot straightening and polishing, electrolytic phosphating and lubricating coating cold drawing sizing in sequence. The method comprises the key steps that a rotary tool bit and a high-pressure cooling spray head are adopted for cooperative peeling, an online hot straightening mechanism is combined with a multi-impeller for polishing, a compact conversion film is formed through electrolytic phosphorization, and continuous operation is achieved in cooperation with a constant-tension-controlled pay-off and take-up assembly. The wire rod size precision and surface quality are effectively improved, the problem of tension fluctuation in long-size wire rod machining is solved, the production efficiency is high, and the method meets the strict requirement for material consistency in the high-end fields such as aerospace fasteners.
Owner:XIAN SHENGTAI METAL MATERIALS CO LTD
Steel wire electrolytic phosphating equipment
Owner:QIANAN DINGTAI HARDWARE MFG CO LTD
Stainless steel sheets for lithium-ion batteries and surface-modified stainless steel parts for lithium-ion batteries
This invention provides stainless steel sheets for lithium-ion batteries that offer excellent corrosion resistance in non-aqueous electrolyte environments containing fluorine compounds, and that ensure corrosion resistance even when current flows due to short circuits, etc., enabling the manufacture of lithium-ion battery components. [Solution] A stainless steel sheet for lithium-ion batteries, on a mass basis, containing C: 0.0200% or less, Si: 0.02~1.90%, Mn: 0.02~1.00%, P: 0.040% or less, S: 0.0002~0.0100%, Al: 0.004~0.100%, Cr: 10.0~25.0%, Mo: 0.02~2.50%, total of one or more Nb and Ti: 0.01~0.55%, N: 0.0500% or less, with the remainder being Fe and impurities, and the ratio of Fe concentration to Cr concentration in the film formed on the surface (Fe / Cr) being 3.0 or more.
Owner:NIPPON STEEL CORPORATION
Rapid preparation method and application of self-supporting supported silver nanoparticles
PendingCN121874838AMaterial nanotechnologyPhotography auxillary processesFaraday efficiencyThin layer
The invention discloses a preparation method and application of self-supporting supported silver nanoparticles, and relates to the technical field of electrocatalysis, and the preparation method comprises the following steps: adopting a three-electrode system, taking a silver foil or a silver net as a working electrode, and taking an Ag / AgCl electrode as a reference electrode; a carbon rod serves as a counter electrode; performing pretreatment on the silver foil or the silver net in a phosphoric acid buffer solution; performing reduction treatment on an oxide layer on the surface of the silver foil or the silver net through an electrochemical in-situ reduction method; forming a uniform silver phosphate thin layer on the surface of the silver foil or the silver net by using an electrochemical in-situ oxidation method and setting a constant potential for several seconds; after the step S3 is carried out, negative potential is applied to the solution, and the self-supporting supported silver nanoparticles are prepared. According to the Ag NPs / Ag3PO4 prepared by the invention, the yield of preparing DHMF by hydrogenating HMF is 0.679 mmol cm <-2 > h <-1 >, and the selectivity and the Faraday efficiency are respectively improved to 94.59% and 95.06%. In a paired coupling system, the total Faraday efficiency reaches up to 185.5%.
Owner:GUIZHOU UNIV