Ultrasonic vibration aging device suitable for eliminating stress of powder pressing body

Abstract

The invention discloses an ultrasonic vibration aging device suitable for eliminating the stress of a powder pressing body. The ultrasonic vibration aging device comprises a vibration base frame, a vibration platform, a plurality of ultrasonic transducers, and a signal generator, wherein the vibration platform is horizontally arranged at the top of the vibration base frame; the ultrasonic transducers are in vertical array arrangement in the vibration base frame; the output shaft of each ultrasonic transducer is in contact with the bottom surface of the vibration platform; and the signal generator is used for providing excitation frequency for each ultrasonic transducer, and regulating and controlling the phase position, the frequency and the amplitude of ultrasonic waves emitted by each ultrasonic transducer. The ultrasonic transducers are in vertical array arrangement in the vibration base frame, so that through arrayed vibration, the stress of the powder pressing body in multiple directions can be eliminated; and besides, through the regulation and control for the phase position, the frequency and the amplitude of the ultrasonic waves, the stress in different directions can be eliminated in a targeted manner.

Description

technical field [0001] The invention relates to the technical field of stress elimination, in particular to an ultrasonic vibration aging device suitable for eliminating the stress of a powder compact. Background technique [0002] Metal components undergo welding, casting, forging, machining and other processes, causing internal character deformation, which will inevitably generate residual stress, greatly reduce the ultimate strength and fatigue strength of the component, and even produce cracks and brittle fractures. Due to the relaxation of the residual stress, the parts are deformed, which greatly affects the size, position accuracy and overall performance of the components. At present, the reduction of this internal stress is mainly through the method of aging; similarly, the process of powder compaction processing is also Stress will be generated. Since the stress of the powder compact and the metal component are different, the stress relief device for the metal compo...

AI Technical Summary

Problems solved by technology

[0002] Metal components undergo welding, casting, forging, machining and other processes, causing internal character deformation, which will inevitably generate residual stress, greatly reduce the ultimate strength and fatigue strength of the component, and even produce cracks and brittle fractures. Due to the relaxation of the residual stress, the parts are deformed, which greatly affects the size, position accuracy and overall performance of the components. At present, the reduction of this internal stress is mainly through the method of aging; similarly, the process of powder compaction processing is also Stress will be generated. Since the stress of the powder compact and the metal component are different, the stress relief device for the metal component may not be able to adapt to the powder compact. In addition, due to the characteristics of the powder compact itself, it often has multi-directional stress.

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