Forming method of aluminum alloy cabin section

Abstract

The invention discloses a forming method of an aluminum alloy cabin section, and belongs to the technical field of rapid forming. The forming method comprises the steps of forming a front end frame byadopting an electric arc additive manufacturing technology; forming a rear end frame by adopting the electric arc additive manufacturing technology; forming the skin according to the size of the front end frame and the size of the rear end frame; and integrating the front end frame, the rear end frame and the skin in a laser welding mode to obtain the aluminum alloy cabin section. According to the forming method of the aluminum alloy cabin section, forming of an integral metal cabin section shell with the ultra-large diameter of 3.8 m or above can be achieved, the product machining allowanceis reduced, the material utilization rate is increased, the tool structure is simple, the production cost is reduced, and the production cycle is shortened.

Description

technical field [0001] The invention relates to the technical field of rapid prototyping, in particular to an aluminum alloy compartment forming method. Background technique [0002] At this stage, the aluminum alloy cabin is usually formed by integral casting. However, due to the influence of the forming equipment and technical level, the aluminum alloy cabin with a large diameter is difficult to realize by the integral casting method. The riveting structure is adopted, but the efficiency is low. [0003] In the prior art, aluminum alloy cabins are formed by friction stir welding of forged rings and plates, with a diameter of up to 3.35 m, but it is difficult to form cabins with a diameter of 3.8 m or even a super large diameter of 4.5 m. [0004] Friction stir welding requires that the workpiece must have a rigid support to resist the upsetting force during welding, so special rigid support tooling is required, the structure is complex, the process preparation time is long...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a method for forming an aluminum alloy cabin section, which solves or partially solves the problem that in the prior art, the aluminum alloy cabin section is formed by friction stir welding of a forging ring and a sheet material, and it is impossible to realize a whole body with a super large diameter of 3.8m or above. The shell of the metal cabin is formed, the product processing allowance is high, the material utilization rate is low, the tooling structure is complicated, the production cost is increased, and the technical problems of the production cycle are increased

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