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Method for preparing titanium-magnesium composite plate by electromagnetic induction heating and straight rolling at different temperatures

An electromagnetic induction heating and induction heating furnace technology, applied in metal rolling, temperature control, etc., can solve the problems of large difference in mechanical properties of titanium and magnesium, uncoordinated deformation, uncoordinated deformation of titanium and magnesium, and avoid titanium plate fracture problem, reduce the deformation resistance difference, and achieve the effect of coordinated deformation

Active Publication Date: 2019-04-23
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, it has become a trend to prepare metal layered composite plates by rolling. Due to the large difference in material properties (deformation resistance, plasticity, thermal conductivity, melting point, etc.) of titanium and magnesium, there are two main problems in the preparation process. One is that the deformation of titanium and magnesium after rolling is extremely uncoordinated, and the other is that it takes a long time to heat the plate in a resistance furnace, and the serious oxidation of the plate makes the bonding strength of the prepared composite plate low
[0006] In order to improve the strength of the titanium-magnesium composite plate, it is necessary to use a large reduction for rolling. If it is heated at the same time, the heating temperature of titanium is limited by the melting point of magnesium, and the heating temperature of titanium is lower than 500 ° C. At this temperature, titanium has poor plasticity. Easy to break under large deformation
In addition, at the same temperature, the mechanical properties of titanium and magnesium are quite different. During rolling, the deformation resistance of titanium is much greater than that of magnesium. After rolling, the deformation of the titanium layer is much smaller than that of the magnesium layer. It is difficult to control the thickness of each layer of material

Method used

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  • Method for preparing titanium-magnesium composite plate by electromagnetic induction heating and straight rolling at different temperatures
  • Method for preparing titanium-magnesium composite plate by electromagnetic induction heating and straight rolling at different temperatures
  • Method for preparing titanium-magnesium composite plate by electromagnetic induction heating and straight rolling at different temperatures

Examples

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Effect test

Embodiment 1

[0053] A method for preparing titanium-magnesium composite plates by electromagnetic induction heating at different temperatures and straight rolling:

[0054] S1: Take industrial pure titanium TA1 plate, two AZ31 magnesium alloy plates and one industrial pure iron DT4 plate with the length, width and thickness of 150mm, 70mm and 2mm respectively. The plates were annealed at 400°C for 2 hours and then air-cooled, and then the oxide layer of the titanium plate and the magnesium plate to be compounded was cleaned of impurities such as grease with a grinder equipped with No. 180 diamond sandpaper, and the ultrasonic Wash it repeatedly in the cleaning instrument, and finally dry it immediately with a dryer;

[0055] S2: chamfer the above-mentioned titanium plate, magnesium plate and iron plate respectively and form blanks according to the sequence of magnesium / titanium / iron / titanium / magnesium, and drill holes with a drill press, and then fix the four corners of the plate with alum...

Embodiment 2

[0062] A method for preparing titanium-magnesium composite plates by electromagnetic induction heating at different temperatures and straight rolling:

[0063] S1: Take industrial pure titanium TA1 plate, two AZ31 magnesium alloy plates and one industrial pure iron DT4 plate with the length, width and thickness of 150mm, 70mm and 2mm respectively. The plates were annealed at 400°C for 2 hours and then air-cooled, and then the oxide layer of the titanium plate and the magnesium plate to be compounded was cleaned of impurities such as grease with a grinder equipped with No. 180 diamond sandpaper, and the ultrasonic Wash it repeatedly in the cleaning instrument, and finally dry it immediately with a dryer;

[0064] S2: chamfer the above-mentioned titanium plate, magnesium plate and iron plate respectively and form blanks in the order of magnesium / titanium / iron / titanium-magnesium, and drill holes with a drilling machine, and then fix the four corners of the plate with aluminum riv...

Embodiment 3

[0072] Method for preparing titanium / aluminum composite plate by electromagnetic induction heating at different temperatures and straight rolling:

[0073] S1: Take industrial pure titanium TA1 plate, two 6061 aluminum alloy plates and one industrial pure iron DT4 plate with the length, width and thickness of 150mm, 70mm and 2mm respectively, anneal the titanium plate at 780°C for 2 hours and then air cool, Anneal at 530°C for 2 hours and then cool in air, then use sandpaper to clean the oxide layer on the composite surface of the titanium plate and aluminum plate, and clean it repeatedly in an ultrasonic cleaning instrument equipped with acetone and alcohol, and finally use a dryer immediately dry.

[0074]S2: Assemble the above-mentioned titanium plate, aluminum plate and iron plate in the order of aluminum / titanium / iron / titanium / aluminum, and drill holes with a drill press, and then fix the four corners of the plate with aluminum rivets;

[0075] S3: put the assembled slab...

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Abstract

The invention provides a method for preparing a titanium-magnesium composite plate by electromagnetic induction heating and different-temperature straight rolling. The method comprises the following steps: S1, plate blank pretreatment; S2, symmetric assembling and plate blank fixing; S3, gas protection: feeding inert gas into an induction heating furnace; S4, composite plate blank induction heating: using a ferromagnetic material, rapidly increasing the temperature of an iron plate by thermal effect generated by eddy-current heating, and transferring heat to a titanium plate and a magnesium plate successively from the iron plate to generate temperature difference rapidly, wherein selection of the temperature difference is determined by a used plate blank material; and S5, different-temperature symmetric rolling. By difference between thermophysical properties of materials, on the premise of low energy consumption, the purpose of rapidly forming temperature difference between the titanium plate and the magnesium plate is achieved by electromagnetic induction heating, thus, deformation resistance difference between the plates is reduced to realize coordination deformation, symmetricrolling is realized under the condition of different temperatures, the titanium-magnesium composite plate with good straightness is obtained, and the problem of severe warping and breakage of the titanium plate in the prior art is avoided.

Description

technical field [0001] The invention belongs to the technical field of preparation of metal layered composite plates, and in particular relates to a method for preparing titanium-magnesium composite plates by using electromagnetic induction heating at different temperatures and straight rolling. Background technique [0002] At present, metal laminated composite panels have been widely used due to the excellent properties of different metals. [0003] Magnesium alloy is the lightest structural metal, and its density is two-thirds of that of aluminum alloy. It has high specific strength, high specific stiffness and many other excellent properties that are difficult to be replaced by other metals. It is the most potential application in the automotive and aerospace fields s material. However, due to the poor corrosion resistance of magnesium alloys, its development has been limited. Therefore, it is particularly important to form a layered composite material of magnesium all...

Claims

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Application Information

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IPC IPC(8): B21B1/38B21B9/00B21B37/74
CPCB21B1/38B21B9/00B21B37/74B21B2001/386
Inventor 肖宏祁梓宸余超赵云鹏吴宗河
Owner YANSHAN UNIV
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