High efficiency multi-position wire arc additive manufacture (WAAM) method for aluminum alloy structural member

Abstract

A method for high-efficiency multi-station electric arc additive manufacturing of aluminum alloy structural parts. In this method, the multi-station arc additive manufacturing of aluminum alloy structural parts is realized by using the welding machine to provide the heat source and the mechanical arm to control the forming path. After the forming path is planned, the multi-station material addition (m stations) is realized through robot programming, that is, the stacking of m stations on the nth layer is completed in the order of No. 1, No. 2...m, and then the completion The stacking of m stations on the n+1th layer is repeated until the addition of m structural parts is completed. The multi-station arc additive manufacturing method proposed by the present invention can realize the addition of multiple structural parts of the same or different types, which not only makes full use of the residence time between layers, shortens the production cycle, but also avoids the continuous accumulation of the same structural parts. The heat accumulation refines the internal structure of the formed part, the formed structural part has excellent mechanical properties, and there are no defects such as cracks, inclusions and pores inside. This method well realizes the short-cycle development of high-performance aluminum alloy structural parts.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and in particular relates to a method for manufacturing aluminum alloy structural parts with high-efficiency multi-station arc additive manufacturing. Background technique [0002] With the development of a new generation of weapons and equipment, the development cycle of equipment has been significantly shortened from 10 years to about 5 years. And compared with the past, the structure has become more complicated, mostly skeletons, end frames and other structures. These structures are mostly prepared by traditional processes such as casting / machining and forging / machining. Special molds need to be processed, and the process flow is long. The cycle is long, the utilization rate of materials is low, and the cost of development and production is high. It is difficult to adapt to the complex and changeable, low-cost, and fast-response requirements of the developed model products. There is an ur...

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Problems solved by technology

And compared with the past, the structure has become more complicated, mostly skeletons, end frames and other structures. These structures are mostly prepared by traditional processes such as casting / machining and forging / machining. Special molds need to be processed, and the process flow is long. The cycle is long, the utilization rate of materials is low, and the cost of development and production is high. It is difficult to adapt to the complex and changeable, low-cost, and fast-response requirements of the developed model products. There is an urgent need for fast and efficient advanced manufacturing technology to adapt to multi-variety, small Batch and short-cycle weapons and equipment development needs

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