274 results about "Alclad" patented technology

A bright finish aluminum alloy on high strength aluminum or aluminum alloy lamination is disclosed including a bright finish top sheet, a high strength aluminum or aluminum alloy substrate, and an adhesive bonding the bright finish metal top sheet to the high strength aluminum or aluminum alloy substrate to provide a bright finish aluminum on high strength aluminum or aluminum alloy lamination product having brighter finish than a sheet product of said high strength aluminum or aluminum alloy and higher strength than a sheet product of said bright finish aluminum of the same thickness as said lamination product, wherein said lamination product withstands galvanic corrosion. In one aspect, the bright finish metal top sheet is 5657 aluminum foil. In one aspect, the high strength aluminum alloy is 5182 alloy sheet.

The durability of a bonded aluminium alloy and/or Alclad (Trade Mark) material joint can be improved by a two stage pre-treatment process in which after the surfaces to be joined have been degreased, a first solution BTESE and/or BTMSE in water, with or without methanol and/or ethanol, is applied to the degreased surfaces dried and coated with a second solution of gamma-glycidoxypropyltrimethoxysilane, an amino silane, gamma-aminopropyltriethoxysilane and/or trimethoxyvinylsilane in water with or without methanol and/or ethanol and drying prior to the application of an epoxy adhesive coating to the dried second solution surfaces, bonding and curing.

A hot stamped high strength part in which the propagation of cracks which form at the plating layer at the time of hot stamping when hot stamping aluminum plated steel sheet is suppressed and the post painting anticorrosion property is excellent even without adding special ingredient elements which suppress formation of cracks in an aluminum plating layer is provided.

A hot stamped high strength part which is excellent in post painting anticorrosion property, which hot stamped high strength part has an alloy plating layer which includes an Al—Fe intermetallic compound phase on the surface of the steel sheet, wherein the alloy plating layer is comprised from phases of a plurality of intermetallic compounds, a mean linear intercept length of crystal grains of a phase containing Al: 40 to 65 mass % among the phases of the plurality of intermetallic compounds is 3 to 20 μm, an average value of thickness of the Al—Fe alloy plating layer is 10 to 50 μm, and a ratio of the average value of thickness to the standard deviation of thickness of the Al—Fe alloy plating layer satisfies the following relationship:

0<standard deviation of thickness/average value of thickness≦0.15.

The present invention solves the problem of melting of Al in heating before hot-stamping, which had been a problem in the past in applying hot-stamping to Al-plated steel sheet, and provides Al-plated steel sheet for hot-stamping and a method of hot-stamping using that Al-plated steel sheet to solve the problem of delayed fracture due to residual hydrogen, and, furthermore, a method of a rapid heating hot-stamping using that Al-plated steel sheet.

The Al-plated steel sheet of the present invention is produced by annealing the Al-plated steel sheet as coiled in a box-anneal furnace for the time and at the temperature indicated in FIG. 5, and alloying of a plated Al and a steel sheet.

Further, a method of rapid heating hot-stamping in the present invention is characterized by cutting out a stamping blank of an Al-plated steel sheet, and heating that blank in heating before hot-stamping by an average temperature with a rising rate of 40° C./sec or more and a time of exposure to an environment of 700° C. or more of 20 seconds or less, and then hot-stamping it.

The invention discloses a method for preparing a hydrogen permeation preventing coating by aluminizing by adopting room temperature fused salt, comprising the following steps of: firstly, carrying out surface treatment of degreasing and oxidation film removing on strain steel matrix with a conventional method; secondly, aluminizing by adopting room temperature fused salt, wherein the room temperature fused salt for aluminizing is a system formed by AlCl3 and organic salt, the organic salt is one of alkyl pyridine halide, alkyl imidazole halide and alkaryl chloration ammonium salt, the mole ratio of the AlCl3 to the organic salt is larger than 1.0 and smaller than or equal to 2.0, the technical parameter for aluminizing by adopting room temperature fused salt is as follows: an aluminum wire as the anode has the temperature of 25-60 DEG C and the current density of 5-30mA/cm<2>, and the plating time is 30-200min; and thirdly, heat treatment to obtain an Fe-Al alloy layer, wherein the technical parameter for heat treatment is as follows: the temperature is 670-750 DEG C, and the time is 30min to 24h; fourthly, oxidation, wherein the technical parameter for oxidation is as follows: the temperature is 670-1050 DEG C, the time is 1-200h, and the oxygen partial pressure is 1.0*10-2 Pa to 2.1*104 Pa. The invention is suitable for preparing tritium permeation preventing coatings on surfaces of special-shaped pieces such as the inner wall of a pipeline, and the like, is suitable for the requirement of large-scale industrialized production, and has a self-healing function.

In a plated steel sheet having an aluminum-plating layer comprising at least Al formed on one side or both sides of the steel sheet, there is provided a plated steel sheet which, owing to the presence of a surface coating layer containing a compound having wurtzite crystal structure on the aluminum-plating layer, has excellent lubricity, prevents the plating thickness from becoming uneven during heating, and can improve formability and productivity in hot stamping, and a method of hot-stamping the plated steel sheet.

A tailored blank for hot stamping includes a welded portion formed by butt-welding a first aluminum-plated steel sheet and a second aluminum-plated steel sheet, an Average Al concentration of a weld metal in the welded portion is in a range of 0.3 mass % to 1.5 mass %, an Ac₃ point of the weld metal is 1250° C. or lower, and furthermore, an aluminum layer formed during the butt-welding is present on a surface of the welded portion.

The invention discloses a fully hard galvanized steel plate and a production method thereof. The chemical composition of the substrate is: (weight percentage) C: 0.02% to 0.16%, Mn: 0.15% to 1.50%, Si≤0.05%, Ti and Nb is added alone or at the same time, the total content of Ti and Nb is 0.015% to 0.100%, and the rest is iron and unavoidable impurities. The characteristics of its production process are: hot rolling heating temperature 1150 ~ 1260 ℃, finishing rolling temperature 900 ~ 1100 ℃, The cooling rate after rolling is 30-60°C/s, the coiling temperature is 550-650°C, the reduction rate of cold rolling is 50%-80%, the annealing temperature is 630-710°C during galvanizing, and the hot-dip galvanizing line with open flame furnace or Produced on a hot-dip galvanizing line with full radiant tubes. The cooling section of the annealing furnace does not need to be reheated, and the yield strength of the steel plate reaches more than 600MPa, which solves the problem that the cooling section of the annealing furnace must be equipped with heating for the production of full-hard galvanized steel sheets, saves procedures and funds, and has broad application prospects. .

The invention discloses a process for producing a battery aluminium foil. The process comprises the following steps of: (1), carrying out casting and rolling production by selecting 1070 alloyed scrap of which the scrap ratio is not more than 35%, and the rest of pure aluminium ingot to obtain a casting-rolling blank; (2), coldly rolling the casting-rolling blank to obtain an aluminium alloy belt material; (3), carrying out heat preservation on the aluminium alloy belt material at 500-560 DEG C for 8.5-9.5 hours, and intermediately annealing at 400-440 DEG C for 1.5-2.5 hours, wherein the thickness of the aluminium alloy belt material during intermediate annealing is 1.8 millimeters; and (4), rolling the intermediately annealed aluminium alloy belt material into a product with the thickness of a finished product. According to the process, the total processing rate after the intermediate annealing is increased; the work-hardening capacity of the material is enhanced; and therefore, the intensity index of the product is increased; in addition, because the annealing and temperature-increasing time is prolonged, the uniformity of the internal organization of the material is beneficial to being increased; and the process is relatively beneficial to processing of subsequent processes and the stability of the product quality.

The invention belongs to the technical field of metal materials and metallurgy, and particularly relates to a rare-earth and Zr reinforced Mg-Li based wrought magnesium alloy and a preparation method thereof. The magnesium alloy adopts Mg-Li based magnesium alloy as the basis; the rare elements and Zr are adopted to be used as the alloying elements; and the Mg-Li based wrought magnesium alloy comprises the following components in percentage by weight: 1.5 to 5.5% of Li, 1% of rare earth element, 0.2 to 0.6% of Zr, and the balance of Mg. The preparation method comprises the following steps in sequence: melting the alloy; casting to an iron crucible which is pre-heated to reach 200 DEG C, thus obtaining an ingot casting; transferring the ingot casting wrapped by the aluminum foil into an iron container; completely covering the ingot casting by fine sand; placing the container into a heat treatment furnace for heat treating; turning; processing into an alloy bar of Phi 46mm; processing the alloy bar by a reverse extruding device so as to obtain a magnesium alloy extruding bar; and carrying out T6 heat treatment on the bar. By adopting the preparation method, the performances of the Mg-Li alloy can be reinforced, and the high plastic deformation capacity of the Mg-Li alloy can be remained; and the tensile mechanical properties of the Mg-Li alloy at room temperature can reach the following levels: the tensile strength Rm is 210MPa, the yield strength Rp 0.2 is 142MPa, and the elongation percentage A is of 23.5%.

A decorative fastening aluminium-plastic plate is prepared through preparing plastic substrate from engineering plastics, filler, stabilizer, plasticizer, lubricant and assistant through mixing, granulating, extruding out, fixing shape, and cutting, preparing the coated aluminium foil through washing, removing oil, oxidizing surface, baking, painting, baking and coiling, combining said plastic substrate with aluminium foil, covering adhesive protecting film on the surface of aluminium foil, and cutting. Its advantages are high abrasion compression, fire and water resistance, good thermal and acoustic insulation, no poison and beautiful appearance.

The invention relates to a method for manufacturing copper clad aluminum bus bar through clad welding and rolling, which is characterized in that a process of copper strips cladding copper bar is continuously performed under gas shielding, the specific method comprises the following steps: cleaning; bus bar blank manufacturing; diameter reducing by cold drawing; stretching by heating and roll compacting and annealing. The invention has the advantages that conductors for securing metallurgical combined entirety are formed on the two metal interfaces through diffusing heat treatment of two materials and one or two elongating rolling. By adopting clad welding, diameter reducing, heating and roll compacting continuous finishing process, the production rate is improved greatly, the process time is shortened; and the quality is ensured. Because preprocessing mechanical scrubbing is finished during clad welding, the brush graining process is simplified, thereby facilitating dust treatment. By adopting the continuous production, the requirements of users for long line can be met.

The invention relates to a kind of fin heat exchanging tube and its producing method. It is used in the electric station air cooling condenser and the petrifaction air cooler. It is composed of a base tube (1) and a fin or a rib (2).Between the base tube and the fin filters the aluminium or aluminium alloy plating liquid with the method of hot dipping aluminium or aluminium alloy. After cooling, the base tube and the fin are jointed together. At the same time, the corrosion resistant aluminium or aluminium alloy film (3) forms on the fin surface. Compared with the current method of hot dipping zinc, the invention finds the substituting material of zinc relaxes the conflict of the zinc resource in short supply and reduces sharply the production cost of the heat exchanging component.

The present invention provides plated steel sheet for hot press use which is excellent in hot lubricity, coating adhesion, spot weldability, and coated corrosion resistance and a method of hot pressing plated steel sheet. The present invention is Plated steel sheet for hot press use and a method of hot pressing plated steel sheet characterized by being plated steel sheet for hot press use which contains an Al plating layer which is formed on one surface or both surfaces of said steel sheet, and a surface coating layer which is formed on said Al plating layer, said surface coating layer containing at least one Zn compound which is selected from a group comprised of Zn hydroxide, Zn phosphate, and a Zn organic acid.

The hot-dip aluminum alloy plated steel has a base steel and a plated layer, in which the composition of the plated layer contains, by % by mass, Fe: 25% to 75%, Mg: 2% to 20%, and Ca: 0.02% to 2% with a remainder of Al and inevitable impurities, the plated layer contains one or both of an α-Mg phase and an Al₃Mg₂ phase, and the sum of the partial volume fraction of the α-Mg phase and the partial volume fraction of the Al₃Mg₂ phase in a range of a depth of 5 μm from a surface of the plated layer is 1% to 40%.

This invention relates to the simultaneous treatment of the internal and external surfaces of turbine blades or vanes. In particular it provides a process for coating an external and an internal surface of a turbine blade or vane with aluminium and chromium, respectively, at substantially the same time. The process comprises the following steps (i) and (ii) in either order: (i) applying to the external surface an aluminising compound comprising aluminium, a moderator, an energiser and a diluent; and (ii) applying to the internal surface a chromising compound comprising chromium, an energiser and a diluent. These steps are followed by (iii) heating the turbine blade or vane to form an aluminium layer on the external surface and a chromium layer on the internal surface. The invention also provides a suitable aluminising compound and a chromising compound per se.

The invention discloses a knurling aluminium foil paper for a cigarette, a knurling device and a production method thereof. The knurling aluminium foil paper consists of a liner paper, a composite adhesive layer, an aluminium foil layer, a printing layer and a coating layer; the knurling device consists of a pair of convex-concave knurling rollers, wherein the convex-concave pattern of one convex-concave knurling roller is mutually meshed with the convex-concave pattern of the other convex-concave knurling roller; and the production method of the knurling aluminium foil paper comprises the steps of: unwinding, compounding, printing, applying silicone oil, braking, knurling and winding. The knurling aluminium foil paper produced by the knurling device has strong layer feel and third dimension, beautiful patterns and a certain anti-counterfeit function.

The invention discloses plating solution for high corrosion resistant, high-formality and hot-forming steel, a hot-forming steel plate, a hot dipping production technology, a hot stamping component and application and belongs to the field of steel belt plate coating composite materials. The plating solution comprises the following components in percentage by mass: 2.0-7.5% of Si, 0.08-2.5% of Mg,0.1-2.0% of Cu, 0.08-1.0% of REM and the balance of Al and unavoidable impurities. The hot-forming steel plate comprises a base plate and a coating on the surface of the base plate; the coating comprises an alloy layer and an aluminized coating; the alloy layer covers the surface of the base plate; the thickness of the alloy layer is equal to or less than 4.5 microns; the aluminized coating is arranged on the surface of the alloy layer; the hot dipping production technology comprises the steps of cleaning of the hot-forming steel base plate, continuous annealing, hot dipping, coating thicknesscontrolling, and cooling after plating; and the hot stamping component made of the steel plate can be used for manufacturing a high corrosion-resistant automobile assembly. According to the invention, a product with higher corrosion resistance and forming property can be obtained.

The invention provides a high-performance cast near-eutectic aluminium-silicon alloy for pressure-containing parts and a preparation method thereof. The high-performance cast near-eutectic aluminium-silicon alloy for the pressure-containing parts is obtained by preheating all the raw materials including 10-12% of Si, 0.5-2.0% of Cu, 0.1-0.5% of Mg, 0.01-0.05% of B, 0.05-0.5% of La and the balance of Al; melting ZL102, an Al-Cu intermediate alloy and commercial purity aluminium, adding a sodium-free refining agent wrapped by an aluminium foil and standing; then adding Al-B, Al-La and magnesium, which are wrapped by aluminium foils, in sequence, stirring the materials to fully melt the materials, adding the sodium-free refining agent accounting for 0.3% of total furnace burden by mass, standing for 15-30 minutes, adding an Al-Sr intermediate alloy wrapped by an aluminium foil when the temperature is reduced to 700-720 DEG C and stirring the Al-Sr intermediate alloy to fully melt the Al-Sr intermediate alloy; when the temperature rises to 710-720 DEG C, pouring the product into a 250-3 metal mold after insulating the product for 10-15 minutes, thus obtaining the high-performance cast near-eutectic aluminium-silicon alloy for pressure-containing parts.