32 results about "5083 aluminium alloy" patented technology

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.