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An integrated method for forming and connecting aluminum-magnesium composite components

A technology of composite components and aluminum alloy melt, which is applied in the forging, forming and connection integration of aluminum alloy and magnesium alloy bimetallic composite components, and in the field of bimetal component forming, which can solve the problem of poor oxidation and corrosion resistance on the surface of magnesium alloys and difficulty in realizing aluminum alloys. Problems such as the connection of magnesium composite components and the difficulty of obtaining a flat interface in solid state composite forging achieve the effects of low deformation resistance, compact structure, and good mechanical properties

Active Publication Date: 2020-08-11
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the surface of the magnesium alloy has poor oxidation and corrosion resistance, conventional welding is difficult to realize the connection of aluminum-magnesium composite components, and solid-state composite forging is difficult to obtain a flat interface, the invention provides an integrated method for the forming and connection of aluminum-magnesium composite components

Method used

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  • An integrated method for forming and connecting aluminum-magnesium composite components
  • An integrated method for forming and connecting aluminum-magnesium composite components
  • An integrated method for forming and connecting aluminum-magnesium composite components

Examples

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Effect test

specific Embodiment approach 1

[0057] 1. Process the AZ31 magnesium alloy material into a cylindrical blank of φ18×h25 mm, cut the contact side wall 52 to form a negative taper with a length of 5 mm and an angle of 1°, and simultaneously cut and process the side length on the upper surface of the magnesium alloy material 0.4mm, diameters are respectively φ14, φ16 annular groove 51, the cross-sectional shape of the annular groove 51 is triangular;

[0058] 2. Heat the mold cavity 2 to 200°C and keep it warm;

[0059] 3. Heat the AA6061 aluminum alloy material to 720°C with an infrared heating device or an induction heating device, then keep it warm at 720°C and let it stand for 10 minutes to fully melt, add refining agent and sprinkle it on the liquid surface, stir it fully and put it back into the furnace to keep it warm 720°C and stand for 5 minutes to make it fully refined; from the fully refined aluminum alloy liquid, metal impurities, oxides and other oxide inclusions, etc. are separated by conventional...

specific Embodiment approach 2

[0063] 1. Process the LA141 magnesium-lithium alloy material into a cylindrical blank of φ18×h25 mm, cut the contact side wall 52 to form a negative taper with a length of 5 mm and an angle of 10°, and simultaneously cut and process the edge on the upper surface of the magnesium alloy material An annular groove 51 with a length of 0.4 mm and a diameter of φ14 and φ16 respectively, the cross-sectional shape of the annular groove 51 is triangular;

[0064] 2. Heat the mold cavity 2 to 200°C and keep it warm;

[0065]3. Heat the AA3003 antirust aluminum alloy material to 750°C with an infrared heating device or an induction heating device, then keep it warm at 750°C and let it stand for 10 minutes to fully melt, add refining agent and sprinkle it on the liquid surface, stir it fully and put it back into the furnace Keep warm at 750°C and stand for 10 minutes to make it fully refined; from the fully refined aluminum alloy liquid, metal impurities, oxides and other oxide inclusions...

specific Embodiment approach 3

[0069] 1. Machining the MA18 magnesium-lithium alloy material into a cylindrical blank of φ18×h25 mm, cutting the contact side wall 52 to form a negative taper with a length of 5 mm and an angle of 5°, and cutting and machining the edge on the upper surface of the magnesium alloy material An annular groove 51 with a length of 0.4 mm and a diameter of φ14 and φ16 respectively, the cross-sectional shape of the annular groove 51 is triangular;

[0070] 2. Heat the mold cavity 2 to 200°C and keep it warm;

[0071] 3. Heat the AA7075 superhard aluminum alloy material to 700°C with an infrared heating device or an induction heating device, then keep it warm at 700°C and let it stand for 10 minutes to fully melt, add refining agent and sprinkle it on the liquid surface, stir it fully and put it back into the furnace Keep warm at 700°C and let it stand for 10 minutes to make it fully refined; from the fully refined aluminum alloy liquid, metal impurities, oxides and other oxide inclus...

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Abstract

The invention discloses an aluminum magnesium composite component forming connecting integrated method. An aluminum alloy material for smelting and a magnesium alloy blank with a certain shape are firstly prepared, the side wall of the magnesium alloy blank is cut and machined to form a certain negative angle, the negative angle is used for forming mechanical interlocking when being connected withfused mass aluminum alloy, and grooves are formed in the upper surface of magnesium alloy and are used for forming a stable and reliable interface when being connected with the aluminum alloy fused mass. The high-temperature aluminum liquid fused mass is injected to a mould cavity with the magnesium blank coated with a half-split-type backing ring at a room temperature, and thus composite forgingis quickly completed. By using the good corrosion resistance and anti-oxidant property of the aluminum alloy, anti corrosion protection on the surface of the magnesium alloy is achieved, and the component has good bonding strength through mechanical interlocking; and integration of forming and connection of the double-metal component is achieved, and the advantage of lightweight of the magnesiumalloy and the advantages of oxidant resistance and corrosion resistance of the aluminum alloy are effectively integrated.

Description

technical field [0001] The invention relates to a method for forming a bimetallic component in the technical field of material processing, in particular to an integrated method for forging, forming and connecting bimetallic composite components of aluminum alloy and magnesium alloy. Background technique [0002] In many industries such as the automobile industry and the aerospace industry, it is difficult for a single material component to meet the advanced process and technical requirements. The manufacture of composite components has strong flexibility, and can be designed and modified according to specific environments and specific uses to meet various use requirements. Magnesium alloys have many special properties: low density, which is conducive to the lightweight of the overall structure, super strong absorption of plastic energy, good castability, high thermal conductivity, good electrical shielding, etc. Magnesium alloys have been greatly researched and developed in...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C1/06B22D19/00B22D17/00
Inventor 陈刚常旭升张顺陈强张鸿名韩飞韩修柱赵祖德
Owner HARBIN INST OF TECH AT WEIHAI
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