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Asynchronous rolling-local liquid phase compounding method for preparing aluminum/magnesium composite plate

A technology of asynchronous rolling and clad plate, used in metal rolling, metal rolling, manufacturing tools, etc., can solve the problems of interface brittle products, unsatisfactory interface performance, affecting interface bonding, etc., and achieve good plate shape. , Small rolling force, the effect of alleviating the degree of oxidation

Active Publication Date: 2021-08-24
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this method shortens the high temperature residence time of the interface to a certain extent, part of the metal on both sides of the interface melts during the pulse heating process, and the liquid metal undergoes a strong eutectic reaction during the cooling process, forming a large number of intermetallic compounds, which seriously affects Even if the interface is combined, the interface performance is still not ideal
Therefore, although the asynchronous rolling combination greatly simplifies the production process, greatly reduces the capacity requirements of the rolling mill equipment, greatly improves the production efficiency, and has better process adaptability, the problem of interface brittle products is still difficult to solve

Method used

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  • Asynchronous rolling-local liquid phase compounding method for preparing aluminum/magnesium composite plate
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  • Asynchronous rolling-local liquid phase compounding method for preparing aluminum/magnesium composite plate

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Embodiment 1

[0041] Asynchronous rolling-partial liquid phase compounding method for preparing aluminum / magnesium clad plate, the process flow chart is as follows figure 1 As shown, this embodiment adopts an asynchronous rolling mill, when R1=R2, w1≠w2; when w1=w2, R1≠R2. R1 and R2 are the radii of the upper and lower rolls respectively, w1 and w2 are the angular velocities of the upper and lower rolls respectively; the material of the aluminum alloy plate is 1060 industrial pure aluminum, the size of the aluminum plate is 300×300×20mm, and the material of the magnesium alloy plate is AZ31 magnesium alloy, magnesium plate size: 300×300×20mm; middle layer composition is Zn58Sn40Cu, size is 300×300×0.1mm. First, polish the surface of the aluminum plate, magnesium plate and the intermediate layer to remove the oxide layer and oil stain; stack them in the order of aluminum / intermediate layer / magnesium, drill holes in the four corners of the blank and fix them with aluminum rivets to ensure the...

Embodiment 2

[0043] The material of the aluminum alloy plate is 6061 aluminum alloy, the size of the aluminum plate is 300×300×15mm, the material of the magnesium alloy plate is AZ31 magnesium alloy, the size of the magnesium plate is 300×300×30mm; the composition of the middle layer is Zn95Al, and the size is 300×300 ×0.1mm. First, polish the surface of the aluminum plate, magnesium plate and the intermediate layer to remove the oxide layer and oil stain; stack them in the order of aluminum / intermediate layer / magnesium, drill holes in the four corners of the blank and fix them with aluminum rivets to ensure the tight fit between the plates; The billet is placed on the roller table, the induction heating temperature is set to 460°C, the composite billet passes through the induction heating device at a speed of 1m / s, and enters the rolling mill; the asynchronous ratio of rolling on both sides of magnesium and aluminum is set to 1.2, and the reduction rate of the first pass is 5%, the second...

Embodiment 3

[0045] The material of the aluminum alloy plate is 7050 aluminum alloy, the size of the aluminum plate: 300×300×12mm, the material of the magnesium alloy plate is ZK60 magnesium alloy, the size of the magnesium plate: 300×300×36mm; the composition of the middle layer is Zn65Al20Cu, the size is 300×300 ×0.2mm. First, polish the surface of the aluminum plate, magnesium plate and the intermediate layer to remove the oxide layer and oil stain; stack them in the order of aluminum / intermediate layer / magnesium, drill holes in the four corners of the blank and fix them with aluminum rivets to ensure the tight fit between the plates; The billet is placed on the roller table, the induction heating temperature is set to 500°C, the composite billet passes through the induction heating device at a speed of 1m / s, and enters the rolling mill; the asynchronous ratio of both sides of magnesium and aluminum is set to 1.3, and the reduction rate of the first pass is 5% The second, third, fourth,...

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Abstract

The invention discloses an asynchronous rolling-local liquid phase compounding method for preparing an aluminum / magnesium composite plate, and belongs to the technical field of metal material machining. The method comprises the following steps that an aluminum alloy plate, a magnesium alloy plate and a zinc-based middle layer with preset sizes are machined; oil stains are removed, and an oxide layer is cleaned and blow-dried; tightly fitting, assembling and fixing are performed according to an aluminum / zinc / magnesium sequence; a blank is subjected to induction heating to 350-550 DEG C, and the middle layer is molten; different asynchronous ratios are adjusted for asynchronous rolling, and the total reduction rate is 50%-70%; and heat treatment is performed on a hot-rolled composite plate to obtain a composite plate product. According to the method, the aluminum-magnesium composite plate is prepared through online induction heating, local liquid-phase compounding and asymmetrical rolling, generation of interface products of a composite interface is greatly reduced, and interface oxidation is prevented; rolling force is small, rolling mill load is low, and the requirement for rolling mill capacity is low; and the composite plate has small residual stress and good rolled plate shape quality. The prepared aluminum / magnesium composite plate is high in interface bonding strength and good in plate shape, has few interface brittle products, and is free of assembling and separant, short in process, low in energy consumption, energy-saving and environment-friendly.

Description

Technical field: [0001] The invention belongs to the technical field of metal material processing, and in particular relates to an asynchronous rolling-local liquid phase composite method for preparing aluminum / magnesium composite plates. Background technique: [0002] Magnesium alloy has the advantages of low density, good shock and noise reduction, excellent electromagnetic shielding and easy recycling, and is widely used in aerospace, automobile, electronics and other fields. However, because the oxide film formed on the surface of magnesium alloy is loose and porous, its corrosion resistance is poor. Compared with magnesium alloys, aluminum alloys have good corrosion resistance, higher strength, and excellent thermal conductivity, but have higher densities. Therefore, the aluminum / magnesium composite board can not only make the material have good corrosion resistance, but also take into account the light weight, and the application prospect is very broad. However, hard ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/38B21B47/00
CPCB21B1/38B21B47/00B21B2001/386
Inventor 谢广明周立成骆宗安段瑞海
Owner NORTHEASTERN UNIV
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