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151 results about "Alclad" patented technology

Alclad is a corrosion-resistant aluminium sheet formed from high-purity aluminium surface layers metallurgically bonded (rolled onto) to high-strength aluminium alloy core material. Alclad has a melting point of about 500 degrees celsius, or 932 degrees Fahrenheit. These sheets are commonly used by the aircraft industry. The first aircraft to be constructed from Alclad was the all-metal US Navy airship ZMC-2, constructed in 1927 at Naval Air Station Grosse Ile. Alclad is a trademark of Alcoa but the term is also used generically.

High-strength composite current collector and preparation method thereof

The invention relates to the technical field of battery current collectors, in particular to a high-strength composite current collector and a preparation method thereof.The preparation method of the composite aluminum foil current collector comprises the following steps that S1, a base material roll film is modified on a film stretching line so as to improve the tensile strength and reduce the ductility; the base material roll film is a polymer base material roll film for preparing the composite current collector; s2, copper plating or aluminum plating is conducted on the surface of the modified base material roll film; and S3, forming the high-strength composite current collector coiled material. Through base material modification, compared with a composite current collector in the prior art, the composite current collector is higher in strength and lower in total elongation under low elongation, the problem that the compactness of a metal layer becomes poor under high elongation is effectively solved, the modified composite current collector is not prone to being excessively stretched during subsequent procedure operation, and if the modified composite current collector is excessively stretched, the modified composite current collector can be directly fractured, so that the service life of the composite current collector is prolonged. The problem that the compactness of the metal layer is poor but not easy to find due to excessive stretching and non-fracture is solved, and the operation difficulty of procedures such as downstream coating is reduced.
Owner:ANHUI FEITUO NEW MATERIALS TECHNOLOGY CO LTD

Novel roller coating device for aluminized zinc alloy plate

The utility model relates to the field of plate processing equipment, and discloses a novel aluminized zinc alloy plate roller coating device which comprises a conveying structure, a roller coating assembly and a scraper structure, base tables are arranged on the two sides of the bottom of the conveying structure, supporting plates are arranged on the two sides of the tops of the base tables, and connecting columns are arranged on the two sides of the supporting plates. A conveying belt is installed in the connecting column body, one side of the conveying belt is connected with the conveying belt, and a back supporting roller is arranged in the middle of the conveying belt; side plates are arranged on the two sides of the outer portion of the roller coating assembly, roller bodies are arranged in the side plates, control handles are arranged outside the side plates and connected with the roller bodies, a support plate is arranged at the tops of the side plates, and a motor is arranged at the top of the support plate and communicated with the roller bodies. The scraper blade structure comprises a connecting plate, a supporting column, a telescopic spring and a scraper blade. According to the utility model, the adjusting roller is arranged to freely adjust the coating thickness of a plate, and the scraper structure is arranged to perform a scraping function, so that the coating is smooth.
Owner:SHANDONG BOWEN NEW MATERIAL TECH CO LTD

Special aluminum feeding device for aluminum plating machine

The utility model relates to the technical field of aluminum feeding devices, in particular to a special aluminum feeding device for an aluminum plating machine, which is convenient for feeding, improves the working efficiency and enhances the practicability. Comprising a machine body, a feeding mechanism comprises a bottom plate, the bottom plate is connected with the machine body through bolts, a support is fixedly installed on the bottom plate, a thread rolling disc is placed on the support, a feeding box is fixedly installed on the bottom plate, a working cavity is formed in the feeding box, two box doors are installed at one end of the working cavity in a communicating mode, and a feeding pipe is installed at one end of the working cavity in a communicating mode; a cleaning device is arranged at the input end of the feeding pipe, a base is fixedly installed at the bottom end of the working cavity, a driving roller is rotationally installed on the base, a first groove is formed in the driving roller in a surrounding mode, a motor is fixedly installed on the base, the output end of the motor is fixedly connected with one end of the driving roller, an electric push rod is fixedly installed at the top end of the working cavity, and a U-shaped plate is fixedly installed at the bottom end of the electric push rod. And a driven roller is rotationally mounted on the U-shaped plate.
Owner:WEIFANG KEDA PACKAGING MATERIALS CO LTD

Method for detecting defects of al-zn-si clad sheet by x-ray image

The application relates to the technical field of image recognition, and discloses a method for detecting explosion welding defects of plated aluminum-zinc-silicon coil plates based on X-ray images. The method acquires an X-ray image sequence of an explosion welding interface of a plated aluminum-zinc-silicon coil plate and inputs the sequence into a physical constraint feature decoupling network, the network comprising a feature extraction backbone, a physical attenuation constraint branch and a defect identification branch. The physical attenuation constraint branch calculates a physical reconstruction loss of a multi-scale space feature map according to an X-ray mass attenuation coefficient matrix of the plated aluminum-zinc-silicon alloy, and reversely propagates the loss to the feature extraction backbone as a regularization term, so as to forcibly separate speckle background features conforming to the physical attenuation law. The application makes the feature decoupling comply with the physical attenuation law, eliminates the interference of speckle artifacts on micro-defect judgment, and avoids missed detection caused by micro-defects being covered by speckles.
Owner:TANGSHAN HONGSHENG METAL MATERIALS CO LTD

Preparation method for metallization of surface electrode of ceramic element

The invention provides a preparation method for metallizing an electrode on the surface of a ceramic element by aluminum plating or aluminum alloy coating through a magnetron sputtering process. Comprising the following steps: cleaning and drying the surface of a ceramic element, putting the ceramic element into magnetron sputtering equipment with aluminum or aluminum alloy as a target material, and directly depositing the aluminum or aluminum alloy material on the surface of the ceramic element through magnetron sputtering to form a metallized electrode. A layer of aluminum or aluminum alloy metallization can be directly deposited on the surface of the ceramic element to serve as an electrode instead of silver, copper and other materials, the material cost is greatly reduced, the binding force and conductivity are good, and the process is simple and controllable.
Owner:KUNSHAN MCLAREN ELECTRONIC TECHNOLOGY CO LTD

An ultra-high strength hydroformed structural component and its manufacturing process

PendingCN122083238AImprove structural strengthquick investmentSheets/panelsManufacturing technologyHydroforming
This invention discloses an ultra-high strength hydroformed structural component and its manufacturing process, comprising the following steps: First, an aluminum-silicon coated aluminized hot-formed steel pipe is selected to form a welded pipe, and the substrate of the structural component is obtained by hydroforming; Second, a pretreatment system is established for the substrate before heating, and the substrate from step one is transferred into the solution in the pretreatment system and immersed; Third, the pretreated substrate is placed in a heating furnace at - degrees Celsius, so that the solution forms carbides under high temperature, and the substrate is removed after being heated to the set temperature; Fourth, the substrate from step three is placed in a mold with a water flow cooling function, and the upper and lower molds are pressed together to quickly cool and quench the pipe. This invention relates to the field of industrial production technology. This invention can form carbides in the substrate under high temperature through immersion in the solution, without forming oxides, which greatly improves the structural strength of the structural component.
Owner:ZHEJIANG MOTORBACS TECH CO LTD

Precoated steel sheet for hot press forming, method of manufacturing the same, hot press formed part, method of manufacturing the same, and application

The application provides a pre-coated steel sheet for hot stamping forming, a manufacturing method of the pre-coated steel sheet, a hot stamping forming part, a manufacturing method of the hot stamping forming part and application. 2 When the pre-coating weight is 20-60 g / m 2 , the surface roughness Ra and Rpc of the coating after hot forming are ensured to be high by controlling the surface roughness Ra and Rpc of the pre-coating; the uniformity of the pre-coating weight is stably controlled by controlling the shape of the pre-coating steel sheet and the parameters of the air knife after aluminum-silicon plating; the uniformity of the coating liquefaction and flow after heating is ensured by controlling the uniformity of the pre-coating weight and the uniformity of the heating temperature in the heating process during hot forming, so that the surface roughness Ra and Rpc of the coating after hot forming are uniform. The coating of the hot stamping forming part produced by the application has high and uniform surface roughness Ra and Rpc, so that the whole part has good paint adhesion and corrosion resistance.
Owner:MASTEEL HEFEI IRON & STEEL CO LTD

Manufacturing method of aluminum-coated steel sheet, aluminum-plated steel sheet, and hot stamping product

A manufacturing method of an aluminum-coated steel sheet includes preparing aluminum (Al) scraps, manufacturing an ingot using the Al scraps, coating a base steel using the ingot, and processing a coated steel sheet. An aluminum-coated steel sheet includes a base steel, and a coating layer formed on the base steel, and the coating layer may contain 8.9 to 9.6 wt % of Si, 1.3 wt % or lower of Fe, 0.7 wt % or lower of Mg, the remainder Al, and other unavoidable impurities.
Owner:HYUNDAI MOTOR CO LTD +2

Rolled concave-convex uniform three-layer laminated and molded sheet metal part and manufacturing process of rolled concave-convex uniform three-layer laminated and molded sheet metal part

The invention discloses a three-layer laminated forming sheet metal part rolled into uniform concave-convex and a manufacturing process thereof, and belongs to the technical field of sheet metal part manufacturing technologies, and the sheet metal part comprises an inner-layer aluminum plate, a middle layer and an outer-layer aluminum plate; the surface of the inner-layer aluminum plate and the surface of the outer-layer aluminum plate are both provided with evenly-distributed concave-convex points in a rolling mode, the middle layer is a heat-insulation, heat-preservation and noise-reduction environment-friendly asbestos-free material layer, the inner-layer aluminum plate and the outer-layer aluminum plate are both made of aluminum plates, and the even concave-convex points are rolled on the surfaces of the inner-layer aluminum plate and the outer-layer aluminum plate, so that the surface area of the plate is effectively increased. The strength of the plate is enhanced, the problem that a flat aluminum plate is soft is solved, and the plate can better adapt to various use scenes; on the premise that the strength is guaranteed, the aluminum plates are adopted as inner and outer layer materials, compared with a traditional aluminum-plated plate three-layer structure, the weight is reduced, and the requirement for light weight is met.
Owner:ZHOUSHAN HAISHAN SEALING MATERIALS CO LTD

Beta radiation detection device based on aluminized plastic scintillator detector

The utility model discloses a beta radiation detection device based on an aluminized plastic scintillator detector, and belongs to the technical field of nuclear radiation measuring instruments. The photomultiplier comprises a stainless steel shell, an aluminum shell is arranged in the stainless steel shell, an aluminized plastic scintillator is arranged at the top of the aluminum shell, a photomultiplier is arranged in the aluminum shell, and the photomultiplier is located at the bottom of the aluminized plastic scintillator. According to the utility model, through the arrangement of the aluminum-plated plastic scintillator, the aluminum layer is directly deposited on the plastic scintillation sheet through the magnetron sputtering process, so that the traditional aluminum-plated film is effectively replaced, the structure of the detection device is further simplified, the production cost is also obviously reduced, and the aluminum layer and the plastic scintillator can be tightly combined through the magnetron sputtering process; compared with the prior art, extra assembling steps are avoided, manpower and material consumption is reduced, production efficiency is improved, and the durability of the detector is enhanced due to the fact that the aluminum layer is directly deposited on the surface of the plastic scintillator.
Owner:CHINA SHAANXI NUCLEAR POWER (XIAN) NEUTRON TECH CO LTD

Hot-dip aluminized silicon 980MPa grade Q&P steel cold-formed steel sheet and its preparation method

The application provides a hot-dip aluminum-silicon 980MPa Q&P steel cold forming steel plate and a preparation method thereof, and the component of the hot-dip aluminum-silicon base plate is as follows in percentage by mass: C: 0.18% to 0.24%, Si: 1.4% to 2.8%, Mn: 1.9% to 2.5%, P: less than or equal to 0.02%, S: less than or equal to 0.005%, Ti: 0.01 to 0.04%, Nb: less than or equal to 0.04%, Al: less than or equal to 0.005%, and the balance of Fe and inevitable impurities. The preparation method comprises a series of processes such as smelting, hot rolling, pickling, cold rolling, continuous annealing hot-dip aluminum-silicon, and finishing, and the hot-dip aluminum-silicon is ingeniously carried out in the slow cooling stage, perfectly matches the heat treatment system, breaks the limitation that the hot-dip galvanized steel plate must be over-aged at high temperature for a short time, and can make the bainite transformation sufficient; the hot-dip aluminum-silicon 980MPa Q&P steel produced by the application has excellent strength and plasticity.
Owner:ANGANG STEEL CO LTD

Conductive composite aluminum foil and preparation method thereof

The invention discloses a conductive composite aluminum foil preparation method, which comprises: S1, carrying out a perforation treatment on a polymer base material, forming a plurality of perforations penetrating through the thickness direction in the polymer base material, and uniformly arranging the perforations in the surface of the polymer base material; s2, aluminum plating treatment is conducted on the first surface of the polymer base material obtained in the step S1, a first aluminum plating layer is obtained on the first surface of the polymer base material, and meanwhile a first side face aluminum plating layer is formed in each through hole; and S3, aluminum plating treatment is conducted on the second surface, obtained in the step S2, of the polymer base material, a second aluminum plating layer is obtained on the second surface of the polymer base material, and meanwhile a second side face aluminum plating layer is formed in each through hole. The composite aluminum foil prepared by the preparation method of the conduction type composite aluminum foil provided by the invention can solve the problem of non-uniform positive electrode current caused by sheet resistance difference of double surfaces of the composite aluminum foil.
Owner:SUZHOU VICTORY PRECISION MFG

Purification type evaporation aluminum plating device

The utility model discloses a purification type evaporation aluminum plating device, which is arranged on a vacuum cavity and comprises a preheating mechanism, an evaporation mechanism, a heating mechanism and a cooling mechanism, and is characterized in that the preheating mechanism is used for hot melting aluminum materials to obtain molten aluminum; the drainage pipe is arranged at a discharge port of the preheating mechanism; the lifting mechanism is in transmission connection with the drainage pipe to drive the drainage pipe to move up and down so as to close or open a discharge port of the preheating mechanism; and the evaporation boat mechanism is arranged on the outlet side of the drainage pipe and used for evaporating the molten aluminum discharged by the drainage pipe. According to the purification type evaporation aluminum plating device provided by the utility model, the splashing of molten aluminum can be reduced, and the evaporation aluminum plating quality is improved.
Owner:SUZHOU VICTORY PRECISION MFG

Production method of high-corrosion-resistance cold-rolled hot-dip aluminum-zinc-plated steel plate

The invention relates to a production method of a high-corrosion-resistance cold-rolled hot-dip aluminum-zinc-plated steel plate. The production method comprises the following steps: regulating and controlling components of a base plate in a steelmaking process; regulating and controlling the zinc pot process; regulating and controlling a cooling process after plating; and regulating and controlling a post-treatment process and the like. According to the production method of the high-corrosion-resistance cold-rolled hot-dip aluminum-zinc-plated steel plate, the corrosion resistance of the product is effectively improved by comprehensively improving the three aspects of the base plate, the plating layer and the film layer, and compared with an aluminum-zinc-plated building material product produced through a traditional technology, the corrosion resistance of the high-corrosion-resistance cold-rolled hot-dip aluminum-zinc-plated steel plate is improved by 25% or above.
Owner:SHANGHAI MEISHAN IRON & STEEL CO LTD

High-strength aluminum coated steel sheet having excellent Anti-corrosion properties and weldability, and manufacturing method thereof

Provided is an aluminum coated steel sheet having excellent anti-corrosion properties and weldability, and a manufacturing method thereof. The aluminum coated steel sheet includes: an austenitic base steel sheet including at least 70 area % of an austenite microstructure; and an aluminum coating layer formed on the base steel sheet, wherein the base steel sheet includes at least 80 area % of ferrite in a surface layer portion, which denotes a region extending from the interface with the coating layer to a depth of 100 μm into the base steel sheet, and the aluminum coating layer may have a composition comprising 2-12 wt % of Si, 5-30 wt % of Zn, and 0.1-5 wt % of Mn, with the balance being Al and inevitable impurities.
Owner:POHANG IRON & STEEL CO LTD

Method suitable for electroplating Zn and Al composite coating on magnesium alloy

The invention belongs to the technical field of magnesium alloy surface treatment, and discloses a Zn and Al composite coating electroplating method suitable for a magnesium alloy, which comprises the following steps: step 1, zinc electro-deposition of the magnesium alloy; step 2, preparing electroplating aluminum ion liquid; 3, the magnesium alloy subjected to zinc electroplating is directly subjected to aluminum electroplating; step 4, cleaning; and 5, detecting the binding force. The technology of direct aluminum plating after magnesium alloy electrogalvanizing is adopted, the technology is simplified, the stability and controllability are high, the cost is low, the plating layer binding force is excellent, and bubbling, falling and even peeling are avoided after 200 DEG C-2h room temperature water quenching and a cross-grid test can be resisted. And meanwhile, successful deposition can be performed on the two magnesium alloys AZ31B and AZ91D, so that the process is less affected by a base material, and the process has a very good commercial application prospect.
Owner:交叉离子(杭州)新材料科技有限公司

A composite current collector evaporation aluminum plating process parameter optimization method and system

The present invention relates to the field of vacuum coating technology, and specifically to a composite current collector evaporation aluminum coating process parameter optimization method and system, the composite current collector evaporation aluminum coating process parameter optimization method, comprising the following steps: obtaining a first temperature, the first temperature is the temperature of the aluminum film layer during the evaporation process; based on the first temperature, obtaining a first thermal stress, the first thermal stress is the thermal stress value of the aluminum film layer during the evaporation process; obtaining a second temperature, the second temperature is the temperature of the substrate layer during the evaporation process; based on the second temperature, obtaining a second thermal stress, the second thermal stress is the thermal stress value of the substrate layer during the evaporation process; according to the first thermal stress and the second thermal stress, adjusting the output power of the heat source. The present invention calculates the thermal stress value of each film layer respectively through the temperature of the aluminum film layer and the substrate layer, and then dynamically adjusts the output power of the heat source according to the difference in thermal stress values, so that the thermal stress difference between the two film layers is maintained within a controllable range.
Owner:DONGGUAN HUICHENG VACUUM TECH

A 600MPa low-cost cold-rolled aluminum-silicon steel sheet and its preparation method

The invention discloses a 600MPa-grade low-cost cold-rolled aluminum-silicon steel plate and a preparation method thereof, wherein the steel plate composition and its weight percentage are: C 0.07-0.15%; Mn 1.0-2.5%; S≤0.010%; P≤0.020%; Si 0.10-0.70%; Als≥0.025%; the rest is Fe and inclusions within the allowable range; the preparation method comprises a hot rolling process, a cold rolling process and an aluminum-silicon plating process, wherein the aluminum-silicon plating process: the steel plate is heated to 750°C-860°C in a continuous hot-dip aluminum production line, the insulation temperature is 750°C-860°C, cooled to 660°C-700°C and enters the aluminum-silicon plating solution, and after exiting the plating solution, it is rapidly cooled to below 260°C at a speed greater than 20°C / s. The steel plate prepared by the present invention has a strength of more than 600MPa, a high elongation and good formability.
Owner:TANGSHAN IRON & STEEL GRP HIGH STRENGTH AUTOMOBILE PLATE CO LTD +2

Aluminum plating roller of film vacuum aluminum plating equipment

The utility model is applicable to the technical field of aluminizing rollers, and provides an aluminizing roller of film vacuum aluminizing equipment, which comprises an inner roller and an outer roller, the outer roller is sleeved on the outer side of the inner roller, and a cavity for water path circulation is arranged between the inner roller and the outer roller; the heat dissipation piece is arranged in the cavity; the heat dissipation piece comprises a cold water pipe tightly attached to the outer side of the inner roller, and a water inlet end and a water outlet end which are arranged at the two side ends of the outer roller. The two air coolers are arranged on the inner side of the outer roller, and the two air coolers are arranged at the intersection where the outer roller is far away from each other; a comprehensive heat dissipation system is formed by combining a water cooling heat dissipation mode and an air cooling heat dissipation mode, the cold water pipe rapidly takes away heat of the inner roller through circulating flowing cold water, and the air cooler further strengthens the heat dissipation effect through the air flow channel. Through the combination mode, the equipment can keep a stable operation state in a high-temperature working environment, and the temperature of the inner roller is ensured to be effectively controlled, so that the working efficiency and the aluminum plating quality of the equipment are improved.
Owner:GUANGDONG LASER OPTRONICS TECH

Aluminum-coated silicon steel and method of production, pre-coated steel, process for producing a hot formed component

The application provides an aluminized silicon steel and a preparation method thereof, a pre-coated steel and a production process of a hot-formed component. The aluminized silicon steel comprises a pre-coating layer arranged on a steel base. The pre-coating layer comprises an intermediate layer and an aluminized silicon coating layer. The nominal thickness of the aluminized silicon coating layer is 10-33 microns. The aluminized silicon coating layer contains Al-Si phases with a proportion of 5-40% and Al-Si-Fe phases with a proportion of 0.1-15%. The dispersion index of the Al-Si phases and the Al-Si-Fe phases in the aluminized silicon coating layer is greater than or equal to 0.05. In the aluminized silicon steel, the proportions of the Al-Si phases and the Al-Si-Fe phases in the aluminized silicon coating layer are appropriate, and the dispersion index is appropriate, which is helpful to the production of a hot-formed component with small grains. The hot-formed component has a double-layer Al-rich intermetallic compound layer, thereby improving the coating toughness and environmental tolerance of the hot-formed component, reducing the crack sensitivity, and improving the hydrogen brittleness resistance and corrosion resistance of the hot-formed component.
Owner:VALIN ARCELORMITTAL AUTOMOTIVE STEEL CO LTD

800mpa grade hot-dip al-si high hole expansion multi-phase steel and preparation method thereof

The application provides 800MPa-grade hot-dip aluminized silicon high-hole-expanding multiphase steel and a preparation method thereof. The composition of the steel plate is as follows in terms of percentage by weight: C: 0.06% to 0.09%, Si: 0.1% to 0.4%, Mn: 1.8% to 2.5%, Cr: 0.1% to 0.4%, Mo: 0.05% to 0.3%, Ti: 0.01% to 0.03%, Nb: 0.01% to 0.03%, P: less than or equal to 0.02%, S: less than or equal to 0.005%, 1 / 3: less than or equal to Mo / Cr: less than or equal to 2 / 3, 2.2%: less than or equal to Mn+Cr: less than or equal to 2.8%, and the balance of Fe and inevitable impurities. The chemical composition of the coating includes the following components in terms of percentage by weight: Al content: 88% to 93%, and Si content: 7% to 12%. The production method of the steel plate comprises a series of processes such as smelting, hot rolling, pickling, cold rolling, continuous annealing and aluminized silicon plating, and the structure of the steel plate comprises ferrite, bainite and martensite. In terms of the planar area method, the ferrite content is 18% to 35%, the bainite content is 35% to 62%, and the martensite content is 10% to 40%. The mechanical properties of the steel plate of the application are as follows: tensile strength is more than 800MPa, yield strength is 620MPa to 750MPa, elongation is greater than 14%, and the hole-expanding value is more than 50%, so that the steel plate has good strength and plasticity and formability, and meanwhile, the hole-expanding performance is excellent.
Owner:ANGANG STEEL CO LTD

Flexible polyimide composite film for spaceflight and preparation method of flexible polyimide composite film

The invention particularly relates to a polyimide flexible composite film for spaceflight and a preparation method of the polyimide flexible composite film. The polyimide flexible composite film for spaceflight comprises an optical function layer, a supporting layer, a bonding layer and a reinforcing layer which are sequentially stacked. According to the invention, through the design and preparation process of the four-layer structure composite film, the product weight reduction is realized, the weight is reduced compared with the existing product, and the launch cost of a spacecraft can be reduced; the heat control performance is good, the solar absorption ratio of an aluminized surface is low, the hemispherical emissivity is low, the alpha s / epsilon h ratio is small, and the heat control characteristic is superior to that of a traditional aluminized film; an ultra-thin structure design is adopted, and the thickness is smaller than that of existing similar products; by introducing the silicon dioxide protective layer, the tolerance of the aluminum layer to atomic oxygen is improved, the service life of the material in a space environment is prolonged, the optical performance change is small after a thermal cycle test, and the material has good environmental adaptability; meanwhile, certain electromagnetic shielding capability is achieved, and the aerospace application requirement can be met.
Owner:BEIJING YOUZHI HANGYU TECHNOLOGY CO LTD

Building fastening device

The utility model discloses a building fastening device which comprises an upper fastening piece and a lower fastening piece, the upper fastening piece and the lower fastening piece are made of the same material, the lower fastening piece comprises a steel base plate, the outer surface of the steel base plate is provided with a material compression-resistant layer, the outer surface of the material compression-resistant layer is provided with a rust-resistant layer, and the outer surface of the rust-resistant layer is provided with an anti-corrosion layer. And a protective coating layer is arranged on the outer surface of the anti-rust layer. The beneficial effects of the utility model are that through the arrangement of the aluminum plating layer and the zinc plating layer, the aluminum plating layer and the zinc plating layer have the greatest advantages of excellent corrosion resistance, painting performance, decoration performance and good formability, the corrosion resistance and corrosion resistance of the upper fastener and the lower fastener are increased, the service life of the upper fastener and the lower fastener is further prolonged, and the service life of the upper fastener and the lower fastener is prolonged. Through the arrangement of the material compression-resistant layer and the alloy material layer, the use strength of the upper fastener and the lower fastener is improved, the phenomenon that the upper fastener and the lower fastener are fractured after being used for a long time is prevented, and the service life of the upper fastener and the service life of the lower fastener are prolonged.
Owner:ZHEJIANG ZHONGFAN CONSTRUCTION CO LTD

High-strength steel structure joint and preparation process

The invention discloses a high-strength steel structure joint and a preparation process. The high-strength steel structure joint comprises a bearing frame, a first bolt, a movable frame, a second bolt and a multi-directional joint structure. The high-strength steel structure joint can be suitable for multi-position-angle steel structure installation, and the cross-shaped plate frame is arranged in the movable frame, the first hemisphere base, the double-face hemisphere base and the second hemisphere base, so that the overall structural strength is improved; in the node preparation process, high-quality coating is conducted on the inner wall and the outer wall of the steel structure node in a hot dip aluminum plating and micro-arc oxidation treatment mode, so that the overall corrosion resistance of the node is improved; and in the preparation process, grooving equipment is optimally used, the grooving equipment can extend into the machined part, and four notches with cross-shaped extension lines are formed in the machined part, so that the position perpendicularity of the four notches is guaranteed, the cross plate frame is conveniently positioned and mounted in the machined part, and the working efficiency of machining is improved.
Owner:NANTONG HAIJU STEEL STRUCTURE CO LTD

A flux-cored welding wire containing surface-aluminum-coated titanium carbide particles

The present invention belongs to the field of welding materials, specifically a flux-cored wire containing surface-aluminum-plated titanium carbide particles. It includes an outer skin and a flux core, and the chemical composition and dosage of the flux core are calculated by mass percentage as follows: surface-aluminum-plated titanium carbide particles 8.0%-12.0%, aluminum powder 2.0%-3.0%, chromium powder, molybdenum powder and nickel powder 16%-20% in total, and the mass ratio of chromium powder, molybdenum powder and nickel powder is 52:96:59, ferrosilicon powder 3.0%-5.0%, ferromanganese powder 4.2%-5.8%, ferrovanadium powder 2.8%-4.0%, fluorite powder 3.2%-5.0%, rutile powder 2.8%-4.0%, calcium carbonate powder 3%-5%, and the rest is iron powder. The titanium atoms and iron atoms of the titanium carbide particles of the present invention form metallic bonds and produce a strong bond, and the time taken for the deposited metal to wear 0.5mm is increased to 1.5 times the original time, effectively improving the wear resistance of the deposited metal.
Owner:ZHENGZHOU UNIV

A cooling device and a cooling method for hot-dip plated steel strip

A cooling device and a cooling method for hot-dip plated strip steel, relate to the technical field of hot-dip plating, the cooling device comprises a main cooling air box and an auxiliary cooling air box, the auxiliary cooling air box is located between the main cooling air box and a coating thickness control device, and the auxiliary cooling air box is configured to output a low-pressure airflow to the surface of the strip steel to pre-cool the surface coating of the strip steel. The auxiliary cooling air box uses a low-pressure airflow, thereby avoiding disturbance to the un-solidified coating. The coating after pre-cooling has been preliminarily solidified, and does not need to be naturally cooled for a long distance, thereby not only shortening the setting distance of the main cooling air box, but also reducing the specification requirement of the main cooling air box, thereby reducing the overall land occupation of the cooling system from two aspects, and improving the efficiency and safety of the production process. Meanwhile, the auxiliary air box has low wind speed and small air pressure, can preliminarily cool the aluminum liquid, can rapidly cool the strip steel to below the melting point of the aluminum liquid, realizes refinement of aluminum flowers, and improves the corrosion resistance and surface quality of the hot-dip aluminum layer.
Owner:浙江华普新材股份有限公司

Aluminizing process for a nickel-containing substrate

Aluminizing process for a nickel-containing substrate. The invention relates to a process for depositing doped aluminum using a physical vapor deposition method, then melting the aluminum and performing a diffusion heat treatment to produce a modified aluminized coating. This process can be used for manufacturing turbomachine blades. Figure for abstract: Fig. 3.
Owner:SAFRAN HELICOPTER ENGINES