Ultralow-temperature flexible forming device for complex thin-walled aluminum-lithium alloy structural part

Abstract

The invention relates to the technical field of special forming manufacturing processes of complex thin-walled aluminum-lithium alloy structural parts, in particular to an ultralow-temperature flexible forming device for the complex thin-walled aluminum-lithium alloy structural part. The thin wall refers to that the wall thickness of the structural part is not larger than 5 mm, and the complex structural part refers to that the shape of the structural part is of spatial curved surface structure. The ultralow-temperature flexible forming device is particularly suitable for forming the thin-walled complex aluminum-lithium alloy structural part. By utilizing the characteristics of plastification and reinforcement of the aluminum-lithium alloy at ultralow temperature, an ultralow-temperature flexible forming method is adopted to conduct flexible formation of an aluminum-lithium alloy plate, and then the problems that when indoor-temperature formation is conducted on the complex thin-walled aluminum-lithium alloy structural part, a complex-shaped component is difficult to form, fracture toughness is poor, defects such as microcracks are prone to generation during indoor-temperature forming, the forming resilience is large, and the shape and size precision of the component is difficult to guarantee are solved.

Description

technical field [0001] The present invention relates to the technical field of special forming and manufacturing technology for aluminum-lithium alloy complex thin-walled structural parts, and specifically refers to an ultra-low temperature flexible forming device for aluminum-lithium alloy complex structural parts. The structural part means that the shape of the structural part is a space surface structure, and the device is especially suitable for forming thin-walled complex structural parts of aluminum-lithium alloy. Background technique [0002] With the further development of science and technology and the continuous progress of society, lightweight structure plays an increasingly important role in improving resource utilization, reducing energy consumption and improving the performance of parts, and has become one of the development trends of today's manufacturing industry. , and there are mainly two ways to achieve lightweight structure: material and structure: the ma...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to combine the technical advantages of multi-point forming and low-temperature medium forming, and to provide a new phenomenon of plasticizing and strengthening aluminum-lithium alloys at ultra-low temperatures to provide a multi-point punch liquid-filled deep-drawing forming device and method. An ultra-low temperature forming device and forming manufacturing method for aluminum-lithium alloy thin-walled structural parts are developed to solve the defects of aluminum-lithium alloy complex thin-walled structural parts that are difficult to form complex-shaped components during room temperature forming, poor fracture toughness, and prone to microcracks during room temperature forming. Large springback in forming, difficulty in guaranteeing shape and dimension accuracy of components

Images