Liquid die forging aluminum alloy SY04 and preparation method thereof

A technology for liquid die forging and aluminum alloy, which is applied in the field of liquid die forging aluminum alloy SY04 and its preparation, can solve the problems of destroying material fluidity and solid solution strengthening, lead is harmful to human body, and physical properties are degraded, etc., and achieve good deformation. Processing performance, low melting cost, and the effect of improving strength and toughness

Active Publication Date: 2022-04-29
邢书明 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing aluminum alloys for liquid die forging, such as A356, ADC10, ADC12, etc., generally have a silicon content of more than 4%, or even as high as 10%. Although they have good casting fluidity and machining performance, their welding performance is poor. In order to improve the welding performance of aluminum alloy castings, it is necessary to reduce the silicon content in the formula of aluminum alloy castings, or add an appropriate amount of lead. However, lead is harmful to the human body. For products that come into contact with the human body, there is currently a clear definition of the content of lead elements. However, to ensure that aluminum alloy castings have good welding performance, the lead content must exceed the safety standard. If you are in contact with aluminum alloy castings with excessive lead content for a long time, it will cause certain harm to the human body.
In addition, the addition of lead will also reduce the physical properties of aluminum alloy castings in other aspects, reduce the silicon content, and destroy the fluidity and solid solution strengthening of the material, so it is necessary to improve

Method used

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  • Liquid die forging aluminum alloy SY04 and preparation method thereof
  • Liquid die forging aluminum alloy SY04 and preparation method thereof
  • Liquid die forging aluminum alloy SY04 and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Liquid die forging aluminum alloy SY04, the mass percentage of each component is shown in Table 1:

[0029] Table 1

[0030]

[0031]

[0032] (2) Allocation of raw materials according to mass percentage: aluminum alloy remelting ingots, aluminum magnesium silicon deformed aluminum alloy scraps, SY04 alloy recycling materials, crystalline silicon, copper rice, magnesium ingots, aluminum titanium boron refining agents, strontium salts, rare earths Lanthanum, electrolytic manganese.

[0033] Aluminum alloy remelting ingot: the main alloying elements are silicon and magnesium, of which silicon ≤ 10%, magnesium ≤ 2%;

[0034] Aluminum-magnesium-silicon-based deformed aluminum alloy scraps: including scraps of common alloys such as 6061, 6082, 6066, 6063, etc., with iron content ≤ 0.6%;

[0035] SY04 alloy return material: Rare earth lanthanum, electrolytic manganese, crystalline silicon, copper rice, magnesium ingots such as the leftover material of the casting ...

Embodiment 2

[0041] The same as in Example 1, the difference is that the raw materials in step (2) are aluminum alloy remelted ingots, aluminum-magnesium-silicon-based deformed aluminum alloy scraps, SY04 alloy recycle materials, aluminum-silicon master alloys, aluminum-copper master alloys, and aluminum-magnesium master alloys. Alloy, aluminum titanium boron refining agent, aluminum strontium master alloy, rare earth cerium, electrolytic manganese.

Embodiment 3

[0043] With embodiment 1, difference is, the mass percent of each composition of step (1) is as shown in table 2:

[0044] Table 2

[0045] Element Mass percentage (%) Si 3.9 Mg 1.0 Cu 1.5 rare earth element 0.2 Sr 0.02 Ti 0.20 mn 0.1 Fe 0.3 Al and impurities margin

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Abstract

The invention discloses a liquid die forging aluminum alloy SY04 and a preparation method thereof, and belongs to the technical field of alloy preparation. The preparation method of the aluminum alloy SY04 comprises the following steps: heating and melting an aluminum alloy remelting ingot, aluminum-magnesium-silicon wrought aluminum alloy leftovers and SY04 alloy foundry returns, then adding silicon, copper and magnesium at the temperature of 700-780 DEG C, and uniformly melting; and adjusting the temperature to 700-750 DEG C, then adding an aluminum-titanium-boron refiner, strontium, rare earth and electrolytic manganese, uniformly melting, adding a refining agent, refining to obtain a liquid die forging aluminum alloy liquid, and carrying out ingot casting to obtain the liquid die forging aluminum alloy SY04. The aluminum alloy SY04 prepared through the method is suitable for direct liquid die forging, indirect liquid die forging, low-pressure casting and die casting of aluminum alloy parts, can also be subjected to cold machining and has excellent performance.

Description

technical field [0001] The invention relates to the technical field of alloy preparation, in particular to a liquid die forging aluminum alloy SY04 and a preparation method thereof. Background technique [0002] Liquid die forging is to pour molten metal into the mold cavity, and make the molten metal solidify and form under the direct action of pressure. Liquid die forging is a metal forming technology combining casting and forging. It not only has the advantages of simple casting process, low production cost, and the ability to form parts with complex shapes, but also has the advantages of fine grain and uniform structure of die forging parts. , good mechanical properties and high forming precision, it has broad application prospects in the fields of electronic appliances, automobiles, rail transit, aerospace, weapons and equipment. [0003] However, the existing aluminum alloys for liquid die forging, such as A356, ADC10, ADC12, etc., generally have a silicon content of ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C22C21/04C22C1/03
CPCC22C21/04C22C1/026C22C1/03C22C32/0078
Inventor邢书明欧黎明甘玉秀侯景路杨茂秀李江邢三臭
Owner邢书明