Heat-treatment-free pressure casting preparation method for aluminum alloy casting part
An aluminum alloy and casting technology, which is applied in the field of pressure casting preparation of aluminum alloy castings that can be exempted from heat treatment
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
example 1
[0033] The round rods with different silicon contents are produced by using the test rod mold and process, wherein the diameter of the middle part of the round rod is 6.4 mm (millimeters), the diameter of both ends is 10 mm, and the total length is 170 mm. The process conditions are as follows: the casting pressure is 80±5MPa, the injection speed is 4.5±0.5m / s (meter / second), the mold temperature is 180±10°C, and the aluminum alloy liquid temperature is 680±10°C. The tensile strength, yield strength and elongation of the round bar made according to this process condition are as shown in table 1:
[0034]
[0035] Table 1
[0036] It can be seen from Table 1 that with the increase of Si content, the tensile strength and yield strength of the round rod gradually increase, but the elongation gradually decreases. Through testing the mechanical properties of the round bar prepared from the above-mentioned cast aluminum alloy, its tensile strength is ≥250MPa, yield strength is ≥...
example 2
[0038] The difference from Example 1 is that the magnesium content is changed to obtain the mechanical properties under different round rods, as shown in Table 2:
[0039]
[0040]
[0041] Table 2
[0042] It can be seen from Table 2 that with the increase of Mg content, the tensile strength and yield strength of the round bar gradually increase, but the elongation rate gradually decreases. By testing the mechanical properties of the round bar prepared from the above-mentioned cast aluminum alloy, its tensile strength is ≥250MPa, yield strength is ≥120MPa, and elongation is ≥10%. It has high strength and high toughness, and meets the mechanical properties of lightweight automotive parts It can be applied to the manufacture and use of automotive structural parts and other parts. More importantly, compared with the traditional aluminum alloy castings, in this embodiment, the Mg content is reduced, so that the Mg2Si strengthening phase in the aluminum alloy material is ap...
example 3
[0044] Utilize existing high-vacuum molds and processes used for the generation of automobile body structural parts of a certain automobile brand to produce the aluminum alloy castings of this embodiment. The sampling thickness of the aluminum alloy castings is 3mm, and the process conditions are the same as in Example 1. The mechanical property data obtained are as follows Table 3 shows:
[0045]
[0046] table 3
[0047] It can be seen from Table 3 that it is the test results obtained from the same material. The mechanical properties of the body structure parts made of the above-mentioned aluminum alloys have tensile strength ≥ 250MPa, yield strength ≥ 120MPa, and elongation ≥ 10%. High-strength and high-toughness meet the mechanical performance standards of body structural parts.
[0048]The aluminum alloy castings provided in this example have good mechanical performance indicators, which can meet the requirements for the use of automobile body structures, and if solid...
PUM
| Property | Measurement | Unit |
|---|---|---|
| tensile strength | aaaaa | aaaaa |
| yield strength | aaaaa | aaaaa |
| elongation | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More