Semi-solid forming and casting technology of aluminum magnesium alloy pot

A semi-solid forming, aluminum-magnesium alloy technology, applied in the field of semi-solid forming die-casting technology of aluminum-magnesium alloy pots, can solve the problems of fast metal crystallization speed, low yield of finished castings, and foaming on the metal surface, etc., and achieve energy saving Consumption, no casting defects, strong and durable products

Inactive Publication Date: 2009-09-23
李扬德
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Problems solved by technology

[0002] The manufacturing process of aluminum-magnesium alloy pots in the prior art basically adopts sand casting, and there are many defects in these casting processes of metal casting, pressure casting (ie squeeze casting and high pressure casting), for example: sand casting metal crystal grains are coarse and

Method used

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Example Embodiment

[0022] The present invention will be described in detail below in combination with specific embodiments.

[0023] A semi-solid forming die-casting process for an aluminum-magnesium alloy pot, which is realized by the following process steps:

[0024] A. Melting of aluminum-magnesium alloy materials: Melting of aluminum-magnesium alloy metals is carried out in a melting furnace, and the melting temperature is 700-800°C;

[0025] B. Scoop the aluminum-magnesium alloy solution with a quantitative heat preservation container, and pour the aluminum-magnesium alloy solution into a heat preservation furnace with a temperature of 650-700°C for semi-solid slurry preparation;

[0026] C. Preheat the extrusion casting mold to 180-260°C, and demold it with graphite powder or mold release agent;

[0027] D. Put the prepared semi-solid aluminum-magnesium alloy slurry into the squeeze casting mold, squeeze cast at the extrusion speed of 0.2~0.6mm / s, and the specific pressure is 40~160MPa, a...

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Abstract

The invention discloses a semi-solid forming and casting technology of aluminum magnesium alloy pot. The semi-solid smelting of the casting technology adopts the rheological slurry temperature control smelting technology; metal tree crystal is broken up in rheological slurry temperature control smelting by electromagnetic mixing to form spherical crystal, the metal crystalline state as well as the metallic crystal nodularity of the aluminum magnesium alloy pot are improved, so that the aluminum magnesium alloy pot has high strength and high tenacity and is light in weight and firm compared with the traditional cast aluminum magnesium alloy pot; the smelting temperature of semi-solid slurry is low compared with the traditional casting, therefore, not only the energy consumption is greatly saved, but also the service life of casting dies is prolonged; and the aluminum magnesium alloy pot has no bubbles and needle holes on the surface, and the firm part has compact crystal and no casting defects. The technology realizes the semi-solid rheological extrusion forming of the aluminum magnesium alloy pot, and has high production efficiency, therefore, not only the quality of casts and the utilization ratio of materials are improved, but also the surface quality of the product is improved and the interior quality is equivalent to forging products; and the invention is suitable for scale production and has great popularization and application value.

Description

technical field [0001] The invention belongs to the technical field of semi-solid forming of metal materials, and relates to an aluminum-magnesium alloy pan die-casting technology, in particular to a semi-solid forming die-casting process for an aluminum-magnesium alloy pan. Background technique [0002] The manufacturing process of aluminum-magnesium alloy pots in the prior art basically adopts sand casting, and there are many defects in these casting processes of metal casting, pressure casting (ie squeeze casting and high pressure casting), for example: sand casting metal crystal grains are coarse and low in strength; The riser of metal mold casting has a large proportion, the yield of finished castings is low, and the cost is high; the metal crystallization speed of die casting castings is fast, which is easy to cause blisters on the metal surface, holes and looseness in the castings, and the yield is low. . [0003] Semi-solid forming technology is a relatively advance...

Claims

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Application Information

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IPC IPC(8): B22D18/02
Inventor 林伟鸿
Owner 李扬德
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