A kind of powder incremental pressing device and pressing method

Abstract

The invention discloses a powder pressurization device and a pressing method, belonging to the technical field of material processing and mechanical equipment, including an upper die punch, an upper die punch hydraulic rod, a front female die, a rear female die, a female die hydraulic rod, a lower die punch, Stripping plate, stripping plate hydraulic rod, female mold hydraulic rod servo motor, upper die punching hydraulic rod servo motor, stripping plate hydraulic rod servo motor, powder incremental pressing compared with one-time pressing, in terms of bottom density and average density The properties are all superior, so that the green density is uniform, and the final performance of the product is improved. The invention realizes electrical and automatic control, improves production efficiency, reduces production costs, reduces manpower work intensity, and improves use safety. In addition, through Provide high power mode and low power mode to reduce energy consumption and improve efficiency.

Description

Technical field [0001] The invention relates to a powder incremental pressing device and a pressing method, and belongs to the technical field of material processing and mechanical equipment. Background technique [0002] Forming is a basic powder metallurgy process whose importance is second only to sintering. It is more restrictive and determines the entire production process of powder metallurgy than other processes. Whether the forming method is reasonable or not directly determines whether the entire production process can proceed smoothly; it affects the subsequent processes and the quality of the final product; it affects the automation of production, productivity and production costs. [0003] During the powder compaction process, the porosity of the powder body decreases after compaction, and the relative density of the compact is significantly higher than that of the powder body. However, as the axial pressure is applied to the powder body, it exhibits a fluid-like behavi...

AI Technical Summary

Problems solved by technology

Whether the forming method is reasonable or not directly determines whether the entire production process can go smoothly; it affects the subsequent processes and the quality of the final product; it affects the automation, productivity and production cost of production

[0003] During powder compaction, the porosity of the compacted powder body decreases, and the relative density of the green compact is significantly higher than that of the powder body, but as the axial pressure is applied to the powder body, it behaves like a fluid to some extent, Apply force to the die wall of the female mold, resulting in the generation of lateral pressure, and coupled with the friction between powder particles, the pressure transmission is uneven, resulting in uneven density in different parts of the green compact, which in turn affects the final performance of the product

[0004] In the prior art, one-time pressing molding process is often used, and the green compacts formed by one-time pressing will have the problem of uneven green density, that is, the problem of bottom density and average density is particularly prominent. In addition, the current Most of the equipment has low production efficiency and serious energy consumption

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