Fabricating method for densifying jetting deposited square shaped blank in large size, and equipment

Abstract

This invention discloses a method for compacting large-scale spray-deposited square blank. The method comprises: (1) providing a wedge pressure head comprising a smooth transition of a small plane and a slant; (2) pressing with a common presser; (3) slightly deforming a large-scale spray-deposited square blank to be compacted in a mold, and gradually pressing from the plane to the slant with the small plane as a main deforming region and the slant as a pre-deforming region; (4) gradually evacuating the combined mold in front of the wedge pressure head with the blank pushed forward under a lateral component of forces to realize lateral shear deformation, thus realizing metallurgical combination. This invention also discloses the apparatus for compacting large-scale spray-deposited square blank, which has such advantages as simple structure, convenient production and stable performance. The method can realize lateral shear compacting large-scale spray-deposited square blanks.

Description

technical field [0001] The invention relates to a lateral deformation densification processing method, in particular to a method for densification processing of a large spray-deposited square blank, and also relates to a device for realizing the densification processing method. Background technique [0002] Aerospace, weapons, transportation and other fields all require some large and extra-large lightweight components, mainly aluminum alloys, magnesium alloys and their composite materials. Such as the front frame of the spacecraft, the wing joint, the frame structure of the fuel storage tank of the launch vehicle, the brake disc of the automobile and the light rail vehicle, etc. [0003] Among the many metal material preparation technologies, a new crucible mobile automatic control spray deposition technology and a series of devices proposed and invented by Professor Chen Zhenhua of Hunan University are ideal technologies for preparing large-scale ...

AI Technical Summary

Problems solved by technology

[0005] However, it is difficult to achieve densification of large square blanks by using common extrusion, forging, rolling and other technologies

On the one hand, limited by the tonnage of the equipment, the cross-sectional area of ​​the large blank is relatively large, such as the area is greater than 500cm 2 The densification and pressing of spray-deposited aluminum-based composite blanks requires a press with a tonnage of more than 20,000 tons, which is currently not available in China

On the other hand, if extrusion or die forging is used, it is limited by the size and performance of the die. At the same time, if the ordinary die forging process is used, the lateral deformation is often limited, the gap cannot be completely closed, and it is difficult to truly realize the densification of the blank.

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