32 results about "5083 aluminium alloy" patented technology

The invention discloses a 5083 aluminum alloy laser welding process method, and belongs to the technical field of welding. According to the method, pulse laser is used as a heat source, welding of the5083 aluminum alloy is realized by adopting a mode that laser is symmetrically swing along the two sides of a weld joint. The method comprises the following steps of firstly, removing oxide films onthe two sides of the 5083 aluminum alloy weld joint before welding; secondly, arranging a pulsed laser and a protective gas nozzle above the 5083 aluminum alloy, wherein the protective gas nozzle is used for blowing inert gas to the front side of the weld joint, and preheating the 5083 aluminum alloy by adopting a preheating device; finally adjusting the average power of the laser, the pulse frequency, the swing amplitude and the swing frequency to achieve 5083 aluminum alloy welding after heating to a preset temperature. According to the 5083 aluminum alloy laser welding process method, the conditions of low production rate and large heat affected area of a traditional aluminum alloy processing method can be improved, and the defects that a continuous laser processing aluminum alloy is large in heat input and poor in forming quality can be overcome. The method has the advantages that the defects of pores, cracks and the like can be effectively improved.

The invention discloses a medium-temperature aluminum-based foil strap brazing material and a preparation method thereof. The brazing material comprises the following components by mass percentage: 6.5-9.6 of Si, 16.0-20.0 of Cu, 8.0-10.0 of Ge, 2.0-6.0 of Zn, 0.5-1.0 of La and the balance of Al. The brazing material is prepared by rapid cooling of a melt, the melting point is lower than 495 DEG C, a foil strap is suitable for brazing of aluminum alloy with the solidus temperature higher than 520 DEG C, torch brazing, induction brazing, furnace brazing, gas protection brazing and the like can be performed, the brazing temperature is 510-520 DEG C, and the brazing material can be applied in brazing of precision components made of aluminum alloy. When the brazing material is used with 5083 aluminum alloy for QJ201 brazing, the shear strength of a brazed joint is higher than 80MPa.

The invention discloses a method for manufacturing a large-sized 5083 aluminum alloy slab ingot, and relates to the technical field of aluminum alloy manufacturing. The method includes the steps that raw and auxiliary materials are prepared; the temperature of melt in the smelting process is 700-750 DEG C, the temperature of a converter is 740+ / -5 DEG C, the refining temperature is 720-730 DEG C, and refining gas is nitrogen-chlorine mixed gas; standing is conducted for 30 minutes after refining, and the temperature of a maintaining furnace is 705-715 DEG C; Al5Ti0.2B titanium wires are used for conducting grain refinement, and the additive quantity is 0.25%; chlorine-argon mixed gas with the flow being 4-5 m<3> / h is used for conducting on-line degassing; molten aluminum alloy is released into a distributing launder, and an automatic large-sized all-aluminum oil lubrication crystallizer is led in for casting; the casting temperature is 673+ / -5 DEG C, the automatic start filling time is 135 s, and the automatic oil lubrication pulse value is 5; and saw cutting and face milling are carried out. The method solves the problems that the production efficiency is low and the rate of finished products is also low when an existing aluminum alloy slab ingot is used for producing wide aluminum plates.

The invention belongs to the technical field of aluminum alloy manufacturing, and relates to a preparation process of aluminum alloy 5083 with high bending performance. The preparation process includes cutting and milling ingots of aluminum alloy 5083, sending the cut and milled ingots of aluminum alloy 5083 to a heating furnace, heating at the temperature of 54 DEG C for 6 hours, cooling to the temperature of 500 DEG C, holding the temperature for 2 hours, discharging and performing hot rolling until the thickness of the aluminum alloy sheets is 10.0mm under the finishing rolling temperatureof 320 DEG C, naturally cooling the hot-rolled aluminum alloy sheets to the room temperature, performing cold rolling until the thickness of the aluminum alloy sheets ranges from 3.0 to 8.0 mm with the cold rolling rate ranging from 20% to 70%, annealing at the temperature of 260-340 DEG C for 2 hours after cold rolling, straightening to obtain 5083-O type aluminum alloy sheets. The preparation method has the advantages simple processing and low energy consumption; the finished product has high bending processing performance and wide application range.

The invention provides a processing technology for a marine 5083 aluminum alloy sheet. The processing technology comprises the following steps: sequentially performing surface milling, heating, hot rough rolling, hot finishing, pre-annealing, first cold rolling, intermediate annealing, second cooling, shearing and strengthening on 5083 aluminum alloy ingot, carrying out stabilizing thermal treatment, sawing-cutting and sizing, to obtain the marine 5083 aluminum alloy sheet. The mechanical performance and corrosion resistance capability of the aluminum alloy sheet can be enhanced by adding annealing between twice cold rolling and finally performing stabilizing thermal treatment operation.

The invention relates to a manufacturing method of plates and particularly relates to a manufacturing method of an aluminum magnesium alloy thick plate, which can be used for solving the problems that a process for processing a plate made of aluminum alloy 5083 which is in the H321 state and is 12.5-75mm in thickness, and the aluminum alloy 5083 being in the H321 state and being 12.5-75mm in thickness, which is prepared by the existing casting method, is poor in strength and percentage elongation. The method comprises the steps of firstly, melting; secondly, casting; thirdly, evening fire; fourthly, rolling and fifthly, annealing. According to the method disclosed by the invention, the blank of the manufacturing method of an alloy thick plate 5083H321 being 12.5-75mm in thickness is filled; and according to the method, a reasonable technological process is selected, so that the yield strength of the plate is 275-293MPa, the tensile strength of the plate is 350-365MPa, and the percentage elongation of the plate is 10.8-11.9%. The aluminum magnesium alloy thick plate manufactured by the method can be used for the industrial fields of armored vehicles, ships, automobile industries, and canning.

The invention discloses a high-strength corrosion-resistant Al-Mg alloy, the chemical composition weight percent is: Fe≤0.3%; Si≤0.25%; Cu≤0.1%; Mn=0.4-1.2%; Mg=4.5-6.0%; Zn =0.25~0.55%; Cr=0.10~0.3%; Zr≤0.15%; Ti≤0.15%; the balance is Al. The invention solves the problem of insufficient strength and corrosion resistance of the existing 5083 aluminum alloy in the manufacture of vehicles, and the obtained alloy has a tensile strength σb≥320 Mpa, a yield strength σ0.2≥160 Mpa, and an elongation δ≥23%. The exfoliation corrosion test grade reaches PA grade.

The invention belongs to the technical field of aluminum alloys and relates to a machining process of a 5083 aluminum alloy profile for a ship. By directly performing manual annealing treatment on thealuminum alloy profile after online extruding is completed, the annealing regime is (320-350)DEG Cx(3-5)h, a material is made to be converted into an annealing structure from an extruding deforming structure, the surface hardness of a product is decreased to 26 HRB or so from 30 HRB under the extruding state, by means of treatment of the early stage annealing process, the hardness of the materialis made lowered, the machinable or stretchable performance of the later period is made improved, and the material becomes softer; according to the stretching process after annealing, when the extruded profile length is 25000 mm, the displacement range of the stretching stroke of a stretching machine is set as 1250-2250 mm, the stretching speed range is set as 40-20 mm / s, the stretching deformingrate is 5-9%, after the extruded 5083 aluminum alloy profile is subjected to stretching machining, according to the mechanical performance of the 5083 aluminum alloy profile, the yielding strength islarger than and equal to 215 MPa, the tensile strength is larger than and equal to 300 MPa, the percentage elongation is larger than or equal to 10%, and the mechanical performance of the 5083 aluminum alloy profile completely meets the performance requirement under the 5083-H116 state.

The invention discloses a medium-temperature aluminum-based foil strap brazing material and a preparation method thereof. The brazing material comprises the following components by mass percentage: 6.5-9.6 of Si, 16.0-20.0 of Cu, 8.0-10.0 of Ge, 2.0-6.0 of Zn, 0.5-1.0 of La and the balance of Al. The brazing material is prepared by rapid cooling of a melt, the melting point is lower than 495 DEG C, a foil strap is suitable for brazing of aluminum alloy with the solidus temperature higher than 520 DEG C, torch brazing, induction brazing, furnace brazing, gas protection brazing and the like can be performed, the brazing temperature is 510-520 DEG C, and the brazing material can be applied in brazing of precision components made of aluminum alloy. When the brazing material is used with 5083 aluminum alloy for QJ201 brazing, the shear strength of a brazed joint is higher than 80MPa.