A high-strength aluminum alloy high-thickness ratio net-shape isothermal forging die

Abstract

The invention relates to a high-strength aluminum alloy type equal-temperature forging die with large height and thickness ratio and net shape. The high-strength aluminum alloy type equal-temperature forging die comprises an upper die, a lower die and a forging cavity, wherein the forging cavity is positioned between the upper die and the lower die, and overflowing material cavities are symmetrically arranged at the two ends of the forging cavity, and respectively consist of three areas, namely a damping control zone (L1 and L2), a damping release area (L3) and an overflowing material storage cavity (L4). The high-strength aluminum alloy type equal-temperature forging die has the advantages that the forgings with large height and thickness ratio, small wall thickness and small round corner can be smoothly formed, the forging streamline is good, the property of the forging is excellent, the amount of flashing and trimming edges of overflowing material is fewer, and the forging die drawing slope is small; the forging with the following parameters can be formed, namely that the inner and outer die drawing slope alpha is smaller than or equal to 3 degrees, the forging height and thickness ratio H / T is 3-8, the thicknesses TO and T1 of the forging part are 1.5-10mm, the thickness T3 of the flashing and trimming edges of the overflowing material of a parting surface is 1.0-3mm, R1 is smaller than or equal to 0.5T1, and R2 is smaller than or equal to 0.3H1 or 0.3H2.

Description

technical field

[0001] The technical field of the invention belongs to the field of pressure processing of non-ferrous metals, in particular, it provides a high-strength aluminum alloy high-height-thick-ratio net-shape forging die.

[0002] technical background

[0003] The forging performance of aluminum alloys is generally considered to be inferior to that of steel, especially high-strength 2XXX series, 7XXX series and various magnesium alloys. Their high-temperature fluidity is relatively poor, so it is difficult to form large high-thickness ratios and small draft angles. Forgings with high degree and small rounded corners, and the overflow flash is also large. especially for figure 1 Forging of structural parts of this type is difficult to achieve filling in the height direction, so the obtained height-thickness ratio is usually small, especially when the thickness T is small, it is more difficult to achieve filling and ensure the streamline of the material. When the fo...

Examples

Embodiment 17075

[0022] Example 1 7075 aluminum alloy forging die

[0023] Such as figure 1 , figure 2 , image 3 and Figure 4 As shown, the 7075 aluminum alloy forging die includes an upper die 1, a lower die 2, and a forging cavity 3 located between the upper die 1 and the lower die 2, and an overflow cavity is arranged between the upper die 1 and the lower die 2, and the overflow The material chamber is composed of three areas, namely the damping control zone 4, the damping release area 5 and the overflow storage chamber 6. The heights of the three partitions of the overflow cavity are respectively: h1=h2=1.2mm, h3=6mm, h4=10mm. The width of each area of ​​the overflow chamber meets the following requirements: L1=L2=1.5mm, L3=9mm, L4=19mm. The overflow chamber has two height transition steps with included angles β and γ, γ=60°, β=90°. The h1 and h2 are the heights of the left and right damping control bands 4 respectively, h3 is the height of the damping release zone 5, h4 is the he...

Embodiment 22024

[0025] Example 2 2024 aluminum alloy forging die

[0026] Such as Figure 5 As shown, a 2024 aluminum alloy forging die includes an upper die 1, a lower die 2, and a forging cavity 3 between the upper die 1 and the lower die 2, and an overflow cavity is arranged between the upper die 1 and the lower die 2, and the overflow The material chamber is composed of three areas, namely the damping control zone 4, the damping release area 5 and the overflow storage chamber 6. The heights of the three partitions of the overflow cavity are respectively: h1=h2=1.5mm, h3=6mm, h4=10. The width of each area of ​​the overflow cavity is: L1=L2=1.8mm, L3=14mm, L4=27mm. The overflow chamber has two height transition step angles β and γ, the values ​​of which are respectively: γ=60°, β=90°. The h1 and h2 are the heights of the left and right damping control bands 4 respectively, h3 is the height of the damping release zone 5, h4 is the height of the overflow storage chamber 6, and L1 and L2 ar...

Embodiment 36061

[0028] Example 3 6061 aluminum alloy forging die

[0029] Such as Figure 6 As shown, the 6061 aluminum alloy forging die includes an upper die 1, a lower die 2, and a forging cavity 3 between the upper die 1 and the lower die 2, and an overflow cavity is arranged between the upper die 1 and the lower die 2, and the overflow The material chamber is composed of three areas, namely the damping control zone 4, the damping release area 5 and the overflow storage chamber 6. The heights of the three partitions of the overflow cavity are respectively: h1--h2=1.5mm, h3=4mm, h4=10. The width of each area of ​​the overflow cavity is: L1=L2=1.5mm, L3=13mm, L4=28mm. The overflow chamber has two height transition step angles β and γ, the values ​​of which are respectively: γ=60°, β=90°. The h1 and h2 are the heights of the left and right damping control bands 4 respectively, h3 is the height of the damping release zone 5, h4 is the height of the overflow storage chamber 6, and L1 and L2...

technical field

[0001] The technical field of the invention belongs to the field of pressure processing of non-ferrous metals, in particular, it provides a high-strength aluminum alloy high-height-thick-ratio net-shape forging die.

[0002] technical background

[0003] The forging performance of aluminum alloys is generally considered to be inferior to that of steel, especially high-strength 2XXX series, 7XXX series and various magnesium alloys. Their high-temperature fluidity is relatively poor, so it is difficult to form large high-thickness ratios and small draft angles. Forgings with high degree and small rounded corners, and the overflow flash is also large. especially for figure 1 Forging of structural parts of this type is difficult to achieve filling in the height direction, so the obtained height-thickness ratio is usually small, especially when the thickness T is small, it is more difficult to achieve filling and ensure the streamline of the material. When the fo...

Examples

Embodiment 17075

[0022] Example 1 7075 aluminum alloy forging die

[0023] Such as figure 1 , figure 2 , image 3 and Figure 4 As shown, the 7075 aluminum alloy forging die includes an upper die 1, a lower die 2, and a forging cavity 3 located between the upper die 1 and the lower die 2, and an overflow cavity is arranged between the upper die 1 and the lower die 2, and the overflow The material chamber is composed of three areas, namely the damping control zone 4, the damping release area 5 and the overflow storage chamber 6. The heights of the three partitions of the overflow cavity are respectively: h1=h2=1.2mm, h3=6mm, h4=10mm. The width of each area of ​​the overflow chamber meets the following requirements: L1=L2=1.5mm, L3=9mm, L4=19mm. The overflow chamber has two height transition steps with included angles β and γ, γ=60°, β=90°. The h1 and h2 are the heights of the left and right damping control bands 4 respectively, h3 is the height of the damping release zone 5, h4 is the he...

Embodiment 22024

[0025] Example 2 2024 aluminum alloy forging die

[0026] Such as Figure 5 As shown, a 2024 aluminum alloy forging die includes an upper die 1, a lower die 2, and a forging cavity 3 between the upper die 1 and the lower die 2, and an overflow cavity is arranged between the upper die 1 and the lower die 2, and the overflow The material chamber is composed of three areas, namely the damping control zone 4, the damping release area 5 and the overflow storage chamber 6. The heights of the three partitions of the overflow cavity are respectively: h1=h2=1.5mm, h3=6mm, h4=10. The width of each area of ​​the overflow cavity is: L1=L2=1.8mm, L3=14mm, L4=27mm. The overflow chamber has two height transition step angles β and γ, the values ​​of which are respectively: γ=60°, β=90°. The h1 and h2 are the heights of the left and right damping control bands 4 respectively, h3 is the height of the damping release zone 5, h4 is the height of the overflow storage chamber 6, and L1 and L2 ar...

Embodiment 36061

[0028] Example 3 6061 aluminum alloy forging die

[0029] Such as Figure 6 As shown, the 6061 aluminum alloy forging die includes an upper die 1, a lower die 2, and a forging cavity 3 between the upper die 1 and the lower die 2, and an overflow cavity is arranged between the upper die 1 and the lower die 2, and the overflow The material chamber is composed of three areas, namely the damping control zone 4, the damping release area 5 and the overflow storage chamber 6. The heights of the three partitions of the overflow cavity are respectively: h1--h2=1.5mm, h3=4mm, h4=10. The width of each area of ​​the overflow cavity is: L1=L2=1.5mm, L3=13mm, L4=28mm. The overflow chamber has two height transition step angles β and γ, the values ​​of which are respectively: γ=60°, β=90°. The h1 and h2 are the heights of the left and right damping control bands 4 respectively, h3 is the height of the damping release zone 5, h4 is the height of the overflow storage chamber 6, and L1 and L2...

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