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Preparation method of corrosion resistant magnesium/zinc composite board

A composite plate, corrosion-resistant technology, applied in temperature control, metal rolling, etc., to achieve energy saving, good mechanical properties and corrosion resistance, and low processing costs

Active Publication Date: 2018-03-30
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for magnesium alloys, there is no report on rolling and compounding zinc with magnesium as a cladding material. This patent has invented a new type of corrosion-resistant magnesium / zinc composite plate and its preparation method

Method used

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  • Preparation method of corrosion resistant magnesium/zinc composite board
  • Preparation method of corrosion resistant magnesium/zinc composite board
  • Preparation method of corrosion resistant magnesium/zinc composite board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: AZ31 / pure zinc composite sheet

[0029] (1) The 0.5mm thick pure zinc plate and the 1mm thick AZ31 plate are machined into a rectangular sample of 60mm×150mm, and placed in a medium temperature furnace for annealing treatment. The annealing temperature of the pure zinc plate is 150°C, and the time is The annealing temperature of the AZ31 plate is 300°C, the time is 60 minutes, and the plate is taken out and cooled in air.

[0030] (2) Grind one side of the pure zinc plate and both sides of the AZ31 plate. The sandpaper used is 60# sandpaper, and the grinding direction is always along the length direction. The surface oxide layer is removed, and chemically cleaned with absolute ethanol, and dried with cold air.

[0031] (3) Place the pure zinc plate on both sides of the AZ31 plate and fix them together with iron wires to make a composite billet.

[0032] (4) Put the composite billet into a medium-temperature furnace for preheating, the preheating temperature ...

Embodiment 2

[0036] Embodiment 2: MgZnCa / pure zinc composite plate

[0037] (1) Machine a 0.5mm thick pure zinc plate and a 1mm thick MgZnCa (Zn=2wt.%, Ca=0.2wt.%) plate into a rectangular sample of 60mm×80mm, and put them into a medium temperature furnace Perform annealing treatment. The annealing temperature of the Zn plate is 150° C. for 30 minutes, the annealing temperature of the MgZnCa plate is 350° C. and the time is 4 hours. The plates are taken out and cooled in air.

[0038] (2) Grind one side of the pure zinc plate and both sides of the MgZnCa plate. The sandpaper used is 60# sandpaper, and the grinding direction is always along the length direction. The surface oxide layer is removed, and the chemical cleaning is carried out with absolute ethanol, and the cold air is blown dry.

[0039] (3) Place the pure zinc plate on both sides of the MgZnCa plate and fix them together with iron wires to make a composite blank.

[0040] (4) Put the composite billet into a medium-temperature ...

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Abstract

The invention relates to a preparation method of a corrosion resistant magnesium / zinc composite board, and belongs to the technical field of magnesium alloy processing. According to the preparation method, a rolling process is combined with a heat treatment process, so that zinc layers cover both sides of a magnesium board, thereby preparing the corrosion resistant magnesium / zinc composite board with good overall performance. The preparation method comprises six steps of treating the board, treating the surface, fixing the board, preheating before rolling, compounding by rolling, and performing annealing treatment, wherein the preheating temperature before rolling is 150 to 400 DEG C, and the preheating time is 10 to 60 min; the rolling speed is 0.2 to 1 m / s, and the rolling processing amount is 10 to 60% of composite billets; and the annealing treatment temperature is 100 to 400 DEG C, and the annealing time is 0.5 to 12 h. According to the preparation method, the simple and easy rolling process is combined with the heat treatment process, so that the magnesium / zinc composite board is successfully prepared, and the composite board has the advantages of good mechanical properties and corrosion resistance, low processing cost and energy conservation and can be applied to the fields of aerospace, automobiles, 3C products, medical devices and the like.

Description

technical field [0001] The invention relates to the processing of metal materials, in particular to a method for preparing a corrosion-resistant magnesium / zinc composite plate, and belongs to the technical field of magnesium alloy processing. Background technique [0002] As one of the lightest commercial metal structural materials, magnesium alloy has a series of advantages such as low density, high specific strength, high specific stiffness, good electromagnetic shielding ability, machining performance and easy recycling. , automotive, electronics, medical equipment and other fields are widely used. However, magnesium alloys are poor in corrosion resistance. This greatly limits its scope of application in certain fields. Therefore, it is very important to study new preparation methods and develop magnesium alloys with better corrosion resistance. [0003] Protective treatment of magnesium alloys is an effective way to improve their corrosion resistance. At present, elec...

Claims

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Application Information

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IPC IPC(8): B21B1/38B21B37/74C22F1/06C22F1/16
CPCB21B1/38B21B37/74B21B2001/386C22F1/06C22F1/165
Inventor 李宏祥张济山王健
Owner UNIV OF SCI & TECH BEIJING
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