A Forging Forming Process of Super-large Aluminum Alloy Rectangular Ring

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 forging ring exceeds 8.7m, critical deformation is likely to occur during the forging process, and instability and elliptical deformation may be caused during the ring rolling process. The ri...

AI Technical Summary

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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