Ultrasonic and micro-forging composite device for improving microstructure and performance of additively manufactured metal and additive manufacturing method

Abstract

The invention provides an ultrasonic and micro-forging composite device for improving the microstructure and performance of additively manufactured metal and an additive manufacturing method. The ultrasonic and micro-forging composite device comprises an energy converter, a pneumatic slider, a pneumatic slider connection frame, an amplitude transformer, a tool head and a roller. The energy converter is arranged in an energy converter shell, the energy converter shell is provided with an inserting piece and a pipeline connector, the amplitude transformer is connected to the lower end of the energy converter, the tool head is connected below the energy converter, the roller is located between the tool head and a workpiece, and the pneumatic slider is connected with the energy converter shell and the amplitude transformer through the pneumatic slider connection frame. By means of the ultrasonic and micro-forging composite device, the advantages that ultrasonic impact frequency is high and deformation generated by mechanical rolling is large are combined, the composite effect of ultrasonic impact and continuous rolling micro-forging can be achieved, and the purpose of improving the microstructure of the additively manufactured metal and the mechanical performance of parts is achieved. Through organic combination of the ultrasonic and micro-forging composite device and the additive manufacturing method with an existing additive manufacturing technology, the technical bottleneck that structure control is easy while performance control is difficult in existing metal additive manufacturing is solved, and innovation and development of metal rapid forming and manufacturing technologies are induced.

Description

technical field [0001] The invention relates to a metal additive manufacturing device, and the invention also relates to a metal additive manufacturing method. Specifically, it is an ultrasonic micro-forging composite device and method for improving the microstructure and mechanical properties of additively manufactured metals. Background technique [0002] At present, additive manufacturing technology has been widely used in the fields of casting sand molds, biomedical devices, polymer materials, etc., but due to the characteristics of the technology itself, its application in the field of rapid prototyping of metal parts Some high-energy beam (laser, electron beam, and plasma) additive manufacturing technologies have encountered bottlenecks in the manufacture of large and complex metal structures. Because the metal additive manufacturing process has gone through a complex physical metallurgical process, the melting, solidification and cooling of the material during the fo...

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Problems solved by technology

[0029] The purpose of the present invention is to provide an improved additive manufacturing method that can solve problems such as cracking caused by internal residual stress in materials prepared by metal additive manufacturing, internal defects in materials, and poor mechanical properties of parts caused by coarse and uneven microstructures in materials. Ultrasonic micro-forging composite device for metal structure and properties

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