A Spray Forming Synchronous Ultrasonic Hot Finish Rolling Preparation Technology

Abstract

The invention discloses a spray forming synchronous ultrasonic hot finish rolling preparation technology, which belongs to the technical field of composite materials. The specific steps are: the metal melt in the leakage bag flows into the nozzle respectively through the inner and outer leakage nozzles; the metal melt is inert under high pressure The gas is atomized into a large number of cone-shaped spray fine droplets; the spray fine droplets fly at high speed in the atomization chamber, and the droplets are cooled rapidly to form a solid and liquid coexistence state, and the atomization cone droplets are scanned and deposited in the rotational movement and retraction A deposition layer is formed on the moving substrate; the ultrasonic vibration and hot rolling of the ultrasonic tool head are used to act on the deposition layer, and the heat of the deposition layer is transferred to the metal of the next deposition layer to form the final billet; this The invention solves the problems of poor structure performance, long process route and material oxidation in the traditional process, shortens the processing flow, and completes the whole process in an inert environment, avoids material oxidation, and can prepare large-sized blanks, reducing process cost.

Description

technical field [0001] The patent of the present invention relates to the technical field of composite materials, especially a preparation technology of spray forming synchronous ultrasonic hot finish rolling. Background technique [0002] In response to the development needs of further structural weight reduction of the key structural parts of the new generation of national defense cutting-edge weapons and equipment in the fields of aviation, aerospace, weapons, ships, etc., the aluminum-lithium alloy is used as the object through spray forming synchronous ultrasonic hot finish rolling preparation technology, breaking through the aluminum-lithium alloy. The uniform deposition and growth of nozzle spray forming realizes the preparation and forming of typical component simulation parts such as ellipsoids and melon petals with double curvature sections of aerospace rockets and aircraft skins. The actual service requirements of the core aluminum-lithium alloy components are cap...

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Problems solved by technology

[0004] The present invention aims at the occurrence of anisotropy, porosity and microscopic segregation in the preformed ingot prepared by the spray forming process in the prior art, and the lack of good metallurgical bonding between the particles, which affects the shaping, toughness, fatigue performance and direct use performance of the material. Poor and other problems, provide spray forming synchronous ultrasonic hot finish rolling preparation technology to solve the above defects

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