Ultra-low temperature medium pressure forming method for aluminum alloy special-shaped pipe fittings
A special-shaped pipe fitting, medium pressure technology, applied in forming tools, metal processing equipment, manufacturing tools, etc., can solve the problems of inability to complete the forming, cracking and reduction in the weld area, improve the forming performance, avoid cracking in the weld area, Avoid cracking effects
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0049] Such as Figure 1 to Figure 6 As shown: the pipe 6 in this embodiment is a solid solution 6061 aluminum alloy pipe with a thickness of 4.5mm and a diameter of 140mm; the sections of the cavity 11 of the upper mold 1 and the lower mold 3 are special-shaped sections, and the maximum equivalent outer diameter is 190mm, the corresponding pipe 6 section difference is 35.7%. Specific steps are as follows:
[0050] The first step: Use liquid nitrogen as the ultra-low temperature medium 5 to simultaneously cool the upper mold 1, the lower mold 3, the left punch 2 and the right punch 7 to a temperature lower than 123K; The circulation passage 4 of the ultra-low temperature medium 5, and the mold is cooled and lowered through the circulation passage 4.
[0051] Step 2: Put the decontaminated pipe 6 at room temperature into the mould, close the upper mold 1 and the lower mold 3, and move the left punch 2 and the right punch 7 forward simultaneously to block the pipe 6.
[0052]...
Embodiment 2
[0058] Such as Figure 1 to Figure 6 As shown, the pipe material 6 in this embodiment is a T4 state 2024 aluminum alloy pipe with a thickness of 2.0 mm and a diameter of 60 mm; the cross section of the cavity 11 of the upper mold 1 and the lower mold 3 is a special-shaped cross section, and the local small fillet radius is 4.0mm, the maximum equivalent outer diameter is 92mm, and the corresponding section difference is 53.3%. Specific steps are as follows:
[0059] The first step: Use liquid nitrogen as the ultra-low temperature medium 5 to cool the upper mold 1, the lower mold 3, the left punch 2 and the right punch 7 to a temperature lower than 123K at the same time; The circulation passage 4 of the ultra-low temperature medium 5, and the mold is cooled and lowered through the circulation passage 4.
[0060] Step 2: Put the decontaminated pipe 6 at room temperature into the mould, close the upper mold 1 and the lower mold 3, and move the left punch 2 and the right punch 7 ...
Embodiment 3
[0066] Such as Figure 1 to Figure 6 As shown, the pipe 6 in this embodiment is an annealed 7075 aluminum alloy pipe with a thickness of 1.0mm and a diameter of 60mm; the cross section of the cavity 11 of the upper mold 1 and the lower mold 3 is a special-shaped cross section, and the local small fillet radius is 2.0mm, the maximum equivalent outer diameter is 80mm, and the corresponding section difference is 33.3%. Different from Embodiment 1, the mold of this embodiment does not perform cooling treatment but only cools the aluminum alloy pipe 6 to a temperature lower than 123K. Specific steps are as follows:
[0067] Step 1: Put the decontaminated pipe 6 into the mold, close the upper mold 1 and the lower mold 3, and move the left punch 2 and the right punch 7 forward simultaneously to block the pipe 6.
[0068] Step 2: quickly fill the inside of the pipe 6 with the ultra-low temperature medium 5 through the low-temperature pressurizer 8, so that the pipe 6 is cooled to a ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More