Electromagnetic induction heating type powder vibrating vacuum thermoforming device and method

Abstract

The invention relates to an electromagnetic induction heating type powder vibrating vacuum thermoforming device and method and belongs to the technical field of powder metallurgy and ceramic production. The thermoforming device mainly comprises a machine body frame, an air extracting seal mechanism, a vibrating loading and buffering mechanism, a static load loading mechanism, an electromagnetic induction heating portion, a die assembly and a vibration pressing head. During formation, an electromagnetic induction heating coil is located on the periphery of a female die, the vibrating pressing head abuts against an upper punch from upside, and vibration is transmitted to powder through the upper punch; the female die, the upper punch, the electromagnetic induction heating coil, and the vibrating pressing head are located in a sealing frame for seal, and therefore integration of a vacuum or controlled atmosphere, induction heating and the characteristics of the vibrating hot pressing sintering production method is achieved. The electromagnetic induction heating type powder vibrating vacuum thermoforming device is simple in structure, low in cost, low in energy consumption, high in efficiency, and easy to popularize.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy and ceramic product production, in particular to an electromagnetic induction heating type powder vibration vacuum hot pressing forming device and method. Background technique [0002] Powder metallurgy is an advanced manufacturing technology that integrates material preparation and parts manufacturing, saves energy and materials, has high efficiency and near-net shape, and reduces pollution. The preparation of powder metallurgy parts with high density and uniform density distribution is becoming more and more important for expanding the application range of powder metallurgy products. At present, powder metallurgy technology is developing towards an integrated, low-cost, high-density, high-performance green manufacturing forming system. [0003] Hot pressing completes the two processes of pressing and sintering at the same time, and achieves a density that cannot be achieved by cold pr...

AI Technical Summary

Problems solved by technology

At present, there is a prominent defect in various hot pressing methods: most of them use resistance heating, and the heating efficiency is low. To increase the product density on the basis of existing equipment, the sintering pressure or sintering temperature must be increased, resulting in more complicated hot pressing sintering equipment. Larger, increasing production costs

This method adopts electromagnetic induction heating and hydraulic vibration system to realize vibration hot pressing, and the internal temperature of medium frequency induction heating can reach 840 ℃ in 3 minutes, but it does not have the advantages of vacuum or controlled atmosphere furnace for preparing powder metallurgy materials

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