Integrated forming method with atmosphere protection and for situ extruding and upsetting of metal powder after sintering and integrated hydraulic machine of integrated forming method

Abstract

The invention discloses an integrated forming method with atmosphere protection and for situ extruding and upsetting of metal powder after sintering and an integrated forming hydraulic machine of theintegrated forming method. The invention integrates sintering, situ repeated extruding and upsetting forming, the micro organization of a formed product is thinner and smaller, and the comprehensive mechanical performance is better. The integrated forming hydraulic machine comprises a machine frame, a workbench, a furnace, a heating device, a cooling system, and a hydraulic system, the machine frame comprises an upper transverse beam, a lower transverse beam, a fixed transverse beam and a standing column, and a frame structure with the closed two sides and the opened front and back is formed;and the workbench is mounted on the fixed transverse beam, the furnace is fixed on the workbench, the heating device, an insulating device and a protecting layer are arranged on the workbench, and a die set is arranged in the furnace. An upper pressing head, an upper convex die, a lower convex die, a concave die and a lower pressing head are matched coaxially, the hydraulic system controls loadingand return stroke, and the cooling system can effectively protect the hydraulic device.

Description

technical field [0001] The invention relates to an in-situ extrusion and upsetting integrated forming method of metal powder after sintering with atmosphere protection and an integrated forming hydraulic press thereof, especially metal powder sintering and sintered billet continuous in-situ repeated extrusion in an atmosphere protection environment. The hydraulic equipment integrated with upsetting and forming relates to an integrated forming method of metal powder with atmosphere protection and its hydraulic press. Background technique [0002] Powder metallurgy is a process that uses powder as a raw material to manufacture various types of products after sintering and forming. The powder metallurgy process can minimize the segregation of alloy components, eliminate coarse and uneven casting structures, and prepare amorphous, quasicrystalline, nanocrystalline, supersaturated solid solutions and composite materials. The products have unique chemical and physical properties, ...

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Problems solved by technology

[0005] The present invention is dedicated to solving the problem that the sintering of easily oxidizable metal powder under the condition of atmosphere protection and the multi-pass high-temperature large plastic deformation forming under the condition of atmosphere protection cannot be integrated and the technical process is complicated, so as to prevent the sintering blank of easily oxidizable metal powder from being processed in subsequent multi-pass The secondary or multiple heating in the process of sub-high temperature and large plastic deformation leads to the coarsening of the microstructure and the decrease of the mechanical properties of the sintered material. Invention of a metal powder sintering with atmosphere protection-in-situ repeated extrusion and upsetting forming integrated hydraulic pressure Equipment, so as to refine the microstructure of the material and improve the comprehensive mechanical properties of the material, shorten the process flow, improve production efficiency, and save energy

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