Forging forming technology of aluminum alloy straight-flanked ring with extra-large specification
A forging forming and super-large-sized technology, which is applied in the forging and forming process of super-large-sized aluminum alloy rectangular rings, can solve problems such as die sticking, welding deformation, and low strength of welded joints in forgings, so as to prevent peeling and grooves on the end surface, increase Radial elongation, effect of improving lubrication effect
Active Publication Date: 2015-05-13
WUXI PAIKE HEAVY CASTING & FORGING
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Problems solved by technology
As an important structural part, the aluminum alloy ring is usually manufactured by segmented profile tailor welding, but the strength of the welded joint is low, and there are disadvantages such as welding deformation, large residual stress, poor consistency of shape and mechanical properties, etc.
At the same time, because the diameter specification of the ultra-large-diameter aluminum alloy forged ring exceeds 8.7m, it is easy to produce critical deformation during the forging process, which may cause instability and elliptical deformation during the ring rolling process. The ring is easily deformed during the heat treatment process, and the finished product is uneven after heat treatment And the performance anisotropy is large, and it is easy to have a narrow deformation temperature range, sensitivity to deformation temperature and deformation speed, large friction coefficient and poor fluidity, uneven deformation will cause local coarse grains, and the occurrence of forging mold sticking during thermal processing. , so the production of super-large-diameter aluminum alloy forging rings is extremely difficult, which has become a bottleneck restricting the development of my country's high-performance structural parts manufacturing technology
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Embodiment 1
[0035] The first step: blanking: use a cast aluminum rod as the blank, the material of the blank is 2219, the diameter of the blank is 1200±2mm, and the length is 2498±5mm. In this embodiment, the diameter is 1200mm and the height is 2498mm.
[0036] The second step: heating before the first forging: the first heating stage: put the billet described in the first step into the heating furnace, and raise the temperature of the billet to within 300°C; the second heating stage: as figure 2 As shown, continue to heat the billet from the end temperature of the first heating stage, raise the temperature of the billet to 455° C., and keep the temperature for 40 hours.
[0037] The third step: billet making;
[0038] Blank making includes the following processes:
[0039] The first stage: using the cross-upsetting forging method to upset the heated billet to form a round cake. The specific process of the cross-upsetting forging method is as follows: image 3 As shown, the initial d...
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Abstract
The invention relates to a forging forming process of an aluminum alloy straight-flanked ring with an extra-large specification. The forging forming process comprises the fist step of blanking; the second step of a first heating before forging, wherein two heating stages are included; the third step of billet fabricating, wherein four stages are included; the fourth step of machining and damage removing; the fifth step of a second heating before forging; the sixth step of forging and ring rolling; the seventh step of heat treatment, wherein two heat treatment stages are included; the eighth step of machining to appropriate dimensions. By means of the forging forming process of the aluminum alloy straight-flanked ring with the extra-large specification, forging formability and mechanical performance of the aluminum alloy straight-flanked ring with the extra-large specification are improved.
Description
technical field [0001] The invention relates to a forging process, in particular to a forging forming process of a super-large aluminum alloy rectangular ring. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in industry, and has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. As an important structural part, the aluminum alloy ring is usually manufactured by segmented profile tailor welding, but the strength of the welded joint is low, and there are disadvantages such as welding deformation, large residual stress, and poor consistency of shape and mechanical properties. At the same time, because the diameter specification of the ultra-large-diameter aluminum alloy forged ring exceeds 8.7m, it is easy to produce critical deformation during the forging process, which may cause instability and elliptical deformation during the ring rolling process. T...
Claims
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IPC IPC(8): B21J1/06B21J5/08B21D28/24B21D31/04B21H1/06
Inventor 钱小兵丁佐军程文虎王俊
Owner WUXI PAIKE HEAVY CASTING & FORGING
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