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Isothermal processing technology of large-specification sheet of high-strength magnesium alloy

A processing technology, magnesium alloy technology, applied in the field of non-ferrous metal production and processing technology, can solve the problems of restricting the popularization and application of large-scale and high-strength deformed magnesium alloys, limiting the application of magnesium alloys, and the small size of hot-extruded plates. Excellent performance, high production efficiency, and uniform deformation

Inactive Publication Date: 2013-09-04
江苏诚德钢管股份有限公司
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  • Summary
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  • Claims
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Problems solved by technology

However, due to the close-packed hexagonal structure of magnesium alloys, the plasticity at room temperature is low and the forming ability is poor, which greatly limits the application of magnesium alloys.
[0003] At present, the production of deformed magnesium alloy plates mainly focuses on hot rolling, hot extrusion, continuous casting and rolling. Poor, the size of the hot extruded plate is small and the anisotropy is large, which greatly limits the popularization and application of large-scale high-strength wrought magnesium alloys

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] 1. Production example: In the following, combined with the brand ZK61, the production of a magnesium alloy plate with a product specification of 28mm×1800mm×2100mm will be described as an example.

[0023] 1. Ingot preparation: remove the surface oxide skin and surface wrinkles of the magnesium alloy round ingot, and then blunt the corners of the ingot. The raw material size: Ф450mm*900mm.

[0024] 2. Homogenization treatment: place the billet at a temperature of 390°C for 20 hours.

[0025] 3. Billet heating: heat the billet to a surface temperature of 430°C and hold for 8 hours.

[0026] 4. Isothermal constrained upsetting and thermal perforation of sheath:

[0027] It is carried out in a closed mold with a set size and shape and a constant temperature. The magnesium alloy billet is constrained by a plastic metal or alloy sheath, and the upsetting temperature is controlled at 300-480°C.

[0028] 08 steel outer sheath size: Ф470mm*10*900mm.

[0029] Upsetting temper...

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Abstract

The invention discloses an isothermal processing of a large-specification sheet of a high-strength magnesium alloy, and relates to the technical field of the production and processing technology of nonferrous metals. The technology comprises the following steps: removing surface scales and surface wrinkles and chamfers of magnesium alloy cast ingots, and sequentially carrying out homogenizing annealing, isothermal constraint upsetting, hot piercing and isothermal backward extrusion, splitting and isothermal flattening, modulation isothermal rolling, heat treatment and polishing treatment. The technology makes the magnesium alloy sheet have a high strength, and can realize the shaping of large-specification high-strength magnesium alloy sheets.

Description

technical field [0001] The invention relates to the technical field of production and processing technology of nonferrous metals. Background technique [0002] Magnesium alloys have good electrical and thermal conductivity, good electromagnetic shielding, high specific strength and specific stiffness, good shock absorption, good cutting and dimensional stability, easy recycling, and environmental protection. , electronic communication and other industries have great application prospects, known as "green engineering materials in the 21st century". However, due to the close-packed hexagonal structure of magnesium alloys, the plasticity at room temperature is low and the forming ability is poor, which greatly limits the application of magnesium alloys. [0003] At present, the production of deformed magnesium alloy plates mainly focuses on hot rolling, hot extrusion, continuous casting and rolling. Poor, the size of the hot extruded plate is small and the anisotropy is large...

Claims

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Application Information

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IPC IPC(8): C22F1/06C21D8/02
Inventor 张怀德张铮徐国荣谭明权高峰
Owner 江苏诚德钢管股份有限公司
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